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  • Led lighting accessories
    LED lamps and lanterns of accessories is associated with LED lamps and lanterns of some parts, is the LED lamps and lanterns of the assembly and molding conditions. lighting accessories Composition: light source, terminals, sensor, converter, adapter, light boxes, acrylic accessories, plastic accessories, special tubes, electronic components, capacitors, stents, metal pieces, ceramic pieces, plastic, glass, die casting, transformers, voltage regulator, wire, socket, plug, switch and lamp holder and lamp holder, lamp plate, optical fiber, crystal pieces, lamp, lamp, lamp shade, and so on. We production led parts including : metal terminal /metal shrapnel (stamping technology) Plug accessories :Plug pin(cnc machining technology) Lamp shade/lamp cup/lamp shrapnel/lamp holder/lamp cap (stamping machining +cnc lathe machining technology) Support custom

    2017 09/23

  • Precision cotter pin
    Cotter pin is a mechanical part, in order to avoid damage to the hole wall, grease in the pin hole grease. Crack is a metal hardware, common name spring pin, safe pin! Cotter pin is a mechanical part, in order to avoid damage to the hole wall, grease in the pin hole grease. Cracking commonly used high-quality steel, made of good elastic material. For thread connection. After the nut is tightened, insert the cotter pin into the nut groove and the tail hole of the bolt and pull the crown of the opening pin to prevent the relative rotation of the nut and the bolt. Crack is a metal hardware, common name spring pin. The standard pin is GB / T91-2000 Cylindrical pin standard range Nominal size of 0.6 ~ 20mm cotter pin (GB / T5232) Stainless steel: Cr17Ni7,0Cr18Ni9Ti (GB / T1220) Stainless steel: Cr17Ni7,0Cr18Ni9Ti (GB / T1220) Toughness: Cotter pin Each foot should be able to withstand repeated bending, and in the bending part of the fracture or cracks do not occur. Bend method: pull the cotter and clamp any of its straight legs in the mold (the flattening should not occur); then bend the cot 90 ° and turn it once. Test speed should not exceed 60 times / min. Inspection mold should be made out of semi-circular slot, the diameter of the cot is the nominal size. The jaws should have fillets of r = 0.5mm. The eye socket should be rounded as much as possible. The cross-section of the cuffs should be round, but the fillet has a radius r = (0.05 ~ 0.01) dmax (d-cotter pin diameter). The difference between the two positions of the opening pin and the two feet should not be greater than the difference between the nominal size of the cottage and the dmax. The opening pin agreed to make the opening, the width of the plane within the two feet should meet the specifications. Surface defects: The cotter surface should not have burrs, irregular and harmful defects.

    2017 09/20

  • Precision positioning pin
    The function of the positioning pin is to limit the free movement of the item. Degree of freedom: where the object in space, there must be six degrees of freedom, X, Y, Z three axial linear motion, and around X, Y, Z rotation movement. In a mold consisting of two or more parts, a pin is designed which allows the two adjacent parts of the mold to be accurately positioned. In the spindle positioning on the first) 1) mechanical cam mechanism (2) photoelectric way to coarse positioning, and then have a hydraulic or pneumatic positioning pin into the spindle pin hole or pin to achieve accurate positioning, , The spindle began to rotate. 1. Fixed locating pin 2. Replaceable locating pin 3. Tapered locating pin 4. Cutting edge locating pin 5. Standard rhombus locating pin Locating pins are most widely used in molds. Including stamping dies, injection molds and so on. Their precision requirements are particularly high, and if it is only by the bolt to fix the template, then certainly not work, so only with the positioning pin to achieve the purpose of positioning, or to prevent the installation location, the direction of the error and so on. In some mechanical movement of the equipment has a certain application, mainly based on two-dimensional space to determine the location.

    2017 09/20

  • Precision Cylindrical pins
    Cylindrical pins are currently widely used for high quality carbon structural steel for the manufacture of raw materials. Under normal circumstances, the material used more C35, C45, but to be heat treatment. High strength requirements under the choice of bearing steel. Mainly used for positioning, can also be used for connection, he relied on the interference fit fixed in the pin hole. Cylindrical pin is used to locate the load is usually not subject to load or by a small load, the number of not less than two, distributed in the connecting structure of the overall structure of the symmetrical direction, the farther away the better, the pin in each connected Of the length of about 1 to 2 times the diameter of small. Cylindrical pin also has ordinary cylindrical pin, internal thread cylindrical pin, threaded cylindrical pin, with pin, flexible cylindrical pin, and so on several. Cylindrical pins can also be used for shafts, and a straight shaft can also be a cylindrical pin, or even a pinned pin. What is the difference between the shaft and the pin? The shaft can be used to transmit torque, bear bending moment and torque, cylindrical pin used to locate, bear the extrusion force and shear force.

    2017 09/20

  • Precision piston pin
    The piston pin is a cylindrical pin mounted on the piston skirt, and its center passes through the connecting rod tip, which connects the piston and the connecting rod and transmits the force of the piston to the connecting rod. Generally made of high quality alloy steel, and made hollow. General domestic use of the piston pin hole will have a step or groove, there is a solid piston pin The piston pin used abroad is straight The piston pin is used to connect the piston and the connecting rod and pass the force of the piston to the connecting rod or vice versa. Piston pin under high temperature conditions to withstand a large cyclical impact load, and because the piston pin in the pin hole swing angle is not large, it is difficult to form a lubricating oil film, so poor lubrication conditions. For this piston pin must have sufficient rigidity, strength and wear resistance, the quality is as small as possible, the pin and pin hole should have the appropriate fit gap and good surface quality. In general, the stiffness of the piston pin is particularly important, if the piston pin bending deformation, the piston pin may damage. Piston pin material is generally low carbon steel or low carbon alloy steel, such as 20,20Mn, 15Cr, 20Cr or 20MnV and so on. The outer surface carburizing hardened, and then by grinding and polishing and other finishing. This not only improves the surface hardness and wear resistance, but also to ensure a higher strength and impact toughness. The structure of the piston pin is very simple, basically a thick wall hollow cylinder. The shape of the hole is cylindrical, two sections of the cone and the combination of shape. The cylindrical hole is easy to handle, but the mass of the piston pin is large. The piston pin of the two sections of the tapered hole has a small mass and the bending moment of the piston pin is the largest in the middle of the piston pin, so close to the equal strength beam Hole processing is more difficult.

    2017 09/20

  • Fasteners parts
    Fasteners parts It usually includes the following 12 parts 1. bolts A fastener consisting of two parts of the head with a male screw and a screw is fitted with a nut for fastening the connection of two parts with through holes. This type of connection is bolted. If the nut is removed from the bolt, it is possible to separate the two parts so that the bolted connection is a detachable connection. 2. A fastener with no head buttocks at both ends. At the end of the connection, it must be screwed into the end of the part with the internal thread hole through the part with the through hole and then screwed the nut even if the two parts are tightened together into a whole. This type of connection is called a stud connection and is a detachable connection. Mainly used for one of the connected parts of a larger thickness, requiring a compact structure or due to the frequent removal of the bolt should not be used occasions. 3. Screws are also composed of the head and the screw two parts of a class of fasteners can be divided into three types of machine screws, set screws and special purpose screws. The machine screw is mainly used for a fastening connection between a part of a threaded hole and a part with a through hole. No nut fit This type of connection is called a screw connection and is also detachably connected to the nut Two fastening connections between the parts with through holes. The tightening of the 4 screws is mainly used to fix the relative position between the two parts. Special-purpose screws such as rings are used for lifting parts. 4. Nuts with internal thread holes are generally flat hexagonal cylinders are also flat cylindrical or flat cylindrical fit bolts, studs or machine screws for fastening the connection of two parts to make a whole. 5. The tapping screw is similar to the machine screw but the thread on the screw is a dedicated tapping screw thread. Used to fasten the connection of two thin metal components to make it a whole component on the need to make a small hole in advance because the screw has a high hardness can be directly screwed into the hole in the component to form a response in the internal thread The This connection is also a detachable connection. 6. Wood screw is also similar to the machine screw but the thread on the screw for the special wood screw thread can be directly screwed into the wood components or parts for a hole with a metal or non-metallic parts with a wooden component fastening connection Together. This connection also belongs to the detachable connection. 7. Washer shape was flat ring of a class of fasteners. Placed between the support surface of the bolt, screw or nut and the surface of the connected part Increased contact surface area of the connected part Lowering the pressure per unit area and protecting the surface of the connected part from being damaged. Another type of elastic washer can also function To prevent the nut back to the role of loose. 8. The ring is mounted on the machine, and the shaft or slot of the device acts to prevent the parts on the shaft or hole from moving left and right. 9. The pin is mainly used for part positioning with some parts can also be connected, fixed parts, transmission power or lock other fasteners used. 10. Rivets A type of fastener consisting of a head and a staple is used to fasten the connection of two parts or components with a through hole to make it integral. This type of connection is called rivet connection. Belong to non-detachable connection. Because the two parts that are connected together must break the rivets on the parts. 11. Assembly and connection The subassembly is a combination of a class of fasteners such as the supply of a machine screws or bolts, self-supply screws and flat washers or spring washers, lock washers combined supply connection refers to a special bolt A combination of nuts and washers is supplied with a class of fasteners such as high strength large hexagon head bolts for steel structures. 12. Punching nails Heterogeneous fasteners consisting of light and nails or nails are fixedly attached to a part or part by means of a welding method for further connection with other parts.

    2017 09/11

  • Metal washer
    Metal gasket (metal washer) to be fitting with a nut on the mat between the parts. For flat shape of the metal ring, commonly used to protect by fitting the surface of the nut scratches, scattered nut on the fitting of a pressure. Washers are divided into: flat washers-C, large washers-A and C, large washers-C, small washers-A, flat washers-A, flat washers - chamfered-A, Strength washers, spherical washers, tapered washers, I-beam oblique washers, channel inclined bezel, standard spring washers, light spring washers, heavy spring washers, internal gear locking washers, serrated lock washers, Outer gear lock washers, outer serrated lock washers, single ear stop washers, double ear stop washers, outer tongue stop washers, round nuts with stop washers. Flat washers are generally used in the connector is a soft, one is hard and more brittle, and its main role is to increase the contact area, decentralized pressure, to prevent the texture of the soft crushed. The spring ring of the basic role of the spring is re-nut tightened to the nut after a force to increase the friction between the nut and bolt! Material for the 65Mn (spring steel), heat treatment hardness HRC44 ~ 51HRC, the surface oxidation. A bead that prevents the bolt from loosening. The working principle of the lock washers is very simple. It consists of two gaskets. The outside is with a radial convex surface, and the inside of the oblique surface. When the assembly, the inner side of the oblique tooth surface between the opposite side of the radial convex surface and the two ends of the contact surface into the state, when the connector by vibration, and the trend of loosening of the bolt, only two pads on the inside of the oblique surface Dislocation, resulting in lifting tension, so as to achieve 100% lock

    2017 09/11

  • Double head stud
    Double stud (English name: double-end stud) refers to both ends of the threaded cylindrical fasteners. Widely used in electric power, chemical industry, oil refining, valves, railway, bridge, steel structure, automobile and motorcycle accessories, machinery, boiler steel structure, hanging tower, large span steel structure and large construction The diameter, length and number of studs should meet the requirements, the type and material of the studs are determined by the grade. Commonly used double-headed bolts are two (also known as full-threaded studs), the thread is divided into two kinds of coarse and fine teeth, coarse teeth common thread with M and nominal diameter, fine ordinary thread with M and nominal diameter × pitch. Fasteners standard provisions M36 bolts with coarse thread, M36 and above diameter can be fine thread, pitch are 3. bm = 1d double studs are generally used for connection between two steel connections; bm = 1.25d and bm = 1.5d studs are generally used for cast iron connections and steel connections Bm = 2d studs are generally used for connection between aluminum alloy connections and steel connections. The former connector has an internally threaded hole and the latter is provided with a through hole. Both ends of the double-headed stud are threaded with nuts and washers for use with two connectors with through-holes. One end of the welded stud is welded to the surface of the connected member and the other end (threaded end) passes through the connected member of the tape through hole, and then the washer is fitted and the nut is screwed so that the two connectors are connected as a unit. Studs generally need to go through the surface treatment, a lot of types of surface treatment of bolts, commonly used in the plating, black, oxidation, phosphating, non-electrolytic zinc film coating and so on. However, electroplating fasteners account for a large proportion of the actual use of fasteners. Especially in the automotive, tractors, home appliances, instrumentation, aerospace, communications and other industries and fields to use more widely. However, for threaded fasteners, the use of not only requires a certain degree of corrosion resistance, but also must ensure that the interchangeability of the thread, here also known as the rotation. In order to meet the requirements of the "fast corrosion" and "interchange" dual performance requirements of the threaded fasteners in use, it is necessary to develop a special plating standard. Double-headed bolts connected to the purpose of anti-loose work in the actual work, the external load vibration, changes, high temperature creep material will cause friction to reduce the thread in the positive pressure disappeared at a moment, the friction is zero, so that the threaded connection loose , If repeated by the role of thread connection will be loose and failure. Therefore, must be anti-loose, otherwise it will affect the normal work, resulting in accidents.

    2017 09/11

  • Stainless steel U bolt
    U-bolts, that is, horse bolts, horse bolts English name for the U-bolt, non-standard parts, the shape of the U-shaped so-called U-bolts, two threads can be combined with the nut, mainly for fixed pipe such as water pipes Or flakes such as car leaf spring, because of its fixed objects like the way people riding in the same, so called riding bolts. T-type screw, also known as T-bolts, the European standard known as the hammer bolts, the material for the SUS304 stainless steel and carbon steel, carbon steel T-type screw surface can be galvanized or nickel-plated and platinum, Bolt material for the 1045 medium carbon steel, the use of red satin production process, heat treatment level 8.8, generally for the mold plate bolts, T-type screws can be directly into the tank, the installation process can automatically locate the lock, T-type Bolts are generally used with flange nuts, is the standard connection when the installation of fasteners, according to the slot width of the profile to use T-bolts

    2017 09/11

  • Flange bolts
    The flange bolts consist of a hexagonal head and a flange (hexagon under the gasket and the hexagonal fixed one) and a screw (with a threaded cylinder) of the two parts of the bolts, with the nut to be used for fastening Connect the two through-hole parts. The flange bolts consist of a hexagonal head and a flange (hexagon under the gasket and the hexagonal fixed one) and a screw (with a threaded cylinder) of the two parts of the bolts, with the nut to be used for fastening Connect the two through-hole parts. This type of connection is bolted. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is a detachable connection 1, hexagonal flange bolts type: hexagonal head there are two, one is flat brain, the other is concave brain. 2, the surface color categories: according to different needs, the surface is white, military green, color yellow, and never rusty Dacromete. 3, flange bolts type: According to the use of different positions of flange bolts, disk size requirements are different, and another flat and teeth with the teeth, from the anti-slip effect. 4, according to the connection of the force, there are ordinary and hinged hole with the hinge hole with the flange of the flange and the size of the hole with the use of the horizontal force. In addition, in order to meet the need for locking after installation, there are rods with holes, these holes can make the bolt when the vibration is not loose. Some of the flange bolts do not thread the light rod to do fine, called the thin rod flange bolts. This flange bolt is conducive to the connection by the force. There are special high strength bolts on the steel structure, and the head will be bigger. Note: Currently on the market commonly used national label, GB5789, GB5787

    2017 09/11

  • Metal Bolt
    Bolts: Mechanical parts, threaded threaded fasteners with nuts. A type of fastener consisting of a head and a screw (with an external thread) is required to fit the nut for fastening the connection of two parts with through holes. This type of connection is bolted. If the nut is unscrewed from the bolt and the two parts can be separated, the bolt connection is a detachable connection. Bolts: A fastener parts consisting of a head and a screw (with an external thread), which is fitted with a nut for fastening the connection of two parts with through holes. Because the bolts are also a kind of railway fittings, the railway accessories are part of the railway line. The tracks mentioned here include rails, sleeper, connecting parts, track bed, anti-climbing equipment, rail brackets and turnouts. As a holistic engineering structure, the track lay on the roadbed above, plays a guiding role in the operation of the train, directly under the enormous pressure of the locomotive and its load. Under the power of the train operation, its various components must have sufficient strength and stability to ensure that the train in accordance with the provisions of the highest speed, safe, smooth and uninterrupted operation There are hexagonal head bolts, round head bolt, square head bolt, countersunk head bolts and so on. Which hexagonal head is the most commonly used. The general countersunk head is used where the surface is smooth and no protrusion, since the countersunk head can be screwed into the part. The round head can also be screwed into the part. The head of the tightening force can be larger, but the size is very large. In addition, in order to meet the needs of the lock after installation, there are holes with holes, the stem of the hole, these holes can make the bolt when the vibration is not loose. Some of the bolts do not thread the light pole to do fine, called the thin waist bolts. This bolt is conducive to the connection by the force. Steel structure with a dedicated high-strength bolts, the head will be bigger, the size has changed. Also special use: T-shaped slot bolts, machine fixture with the most, the shape of special, both sides of the head to cut off. Anchor bolts, for machine and ground connection fixed, there are many kinds of shapes. U-bolts, as previously described. and many more.U shade bolts. There are special studs for welding, one with a thread, which can be welded to the part and the other side is directly screwed.

    2017 09/11

  • Metal Nut
    Metal nut is the nut, screwed with the screw or screw together to play the role of fastening parts, all manufacturing machinery must use a component. A wide variety of nuts, we have common GB, German standard, British standard, American standard, the standard of the nut. Nuts according to the different materials, divided into carbon steel, high strength, stainless steel, steel and other major types. According to the product attributes corresponding to different national standard number is divided into ordinary, non-standard, (old) GB, the new national standard, US, British, German standard. Different sizes, different threads are divided into different specifications. (Such as M8, M16), the United States, the British system with the score or # that specifications (such as 8 #, 10 #, 1/4, 3/8) 2, the nut is the mechanical equipment connected to the parts, through the inside of the thread, the same specifications of nuts and screws to connect together, for example, M4-0.7 nut can only be used with M4-0.7 screw (in Nuts, M4 refers to the nut diameter of about 4mm, 0. 7 refers to the distance between the two thread teeth 0.7mm); US-made products are the same, such as 1 / 4-20 nuts can only be with 1 / 4-20 of the screw with (1/4 refers to the nut diameter of about 0 .25 inches, 20 fingers in each inch, there are 20 teeth). DISC-LOCK Lock nut is composed of two parts, each part has a staggered cam, because the internal wedge design slope angle is greater than the bolt Nut angle, this combination will be tightly bite into a whole, when there is vibration, DISC-LOCK loose nuts raised part of the convex parts of each other, resulting in lifting tension, so as to achieve the perfect anti-loose effect. Folding embedded nut Using a variety of embossed wire production (usually lead brass, such as H59,3604,3602) made of copper nut. Our daily access to the embedded rosette copper nuts are made of precision automatic lathe processing. The reference standard for embedded rosette copper nut comes from GB / T809. The main operation of the embedded rosette copper nut is injection molding, after heating into the plastic parts inside or direct mold injection, if the use of mold injection, PA / NYLOY / PET melting point are above 200 ° C, embedded nut was hot After the plastic parts of the temperature quickly become high, after injection molding, the rapid cooling of the plastic body crystal hardening, if the embedded nut temperature is still at high temperatures, it may fall to the copper nut and plastic parts of the place began to loose or cracks The So in the injection of nuts are used in the copper nut instead of carbon steel nut. There are two ways of forming the outer copper thread of the embedded copper nut. One kind is the production of the raw material of copper. After the flower is formed on the upper equipment, the general pattern of the flower pattern is straight and the other is Light round copper material directly in the production process while tapping the edge of embossing, this processing can produce some non-standard size of the rolling copper nut, embedded copper nut embossed shape can be selected with the user, such as textured, Eight words embossed, embossed characters and other rolling patterns. Stainless steel nut series (GB6170 / DIN934), fine nut (GB6172 / DIN439), heavy nut (metric, American), nylon lock nut (DIN985-DIN982 thick), all metal locking nut (DIN980M), cap nut (DIN1587 (DIN 6928), hexagonal welded nut (DIN929), butterfly cap (GB62, DIN315, US), K cap (DIN 698), flange nut (GB6177 / DIN6923), flange nut nylon nut (DIN 6926) Wait. Specifications: M1.6-M64

    2017 09/11

  • Flange nuts
    Flange nuts, with nuts, flower nuts, hexagonal flange nuts, flange nuts, etc., are mostly used in pipe connections or need to increase the nut contact surface of the workpiece. Function or use: mostly used in the pipeline connection or need to increase the nut contact surface of the workpiece Material: A3 low carbon steel 35K high speed steel wire 45 # steel 40CR 35Crmoa Hardness level: 4 level 5 level 6 level 8 level 10 level 12 Surface treatment: generally divided into galvanized zinc and zinc plated two, and generally cold galvanized! Main specifications: M5 M6 M8 M10 M12 M16 M20 (M20 above specifications and M14 M18 flange nuts are not commonly used) Thread Size: Refer to the national standard nut thread GB code: GB6177-2000 Flange nuts and general hex nuts are basically the same size as threaded sizes, except that they are integral with hex nuts and nuts are non-slip, which increases the nut and the workpiece Of the surface area of contact, compared to ordinary nut plus gasket combination, more solid and more force. [1] Commonly common flange nut specifications are generally below the M20, because most of the flange nuts are used in the pipeline and the flange, so subject to the workpiece, flange nut specifications compared with the nut is less. M20 above some of the flange nuts are mostly flat flange, is the flange surface without teeth, most of these nuts used in some special equipment and special places.

    2017 09/11

  • Hex nut
    Hex nuts are classified into type I, type II and thin according to nominal thickness. 8 or more nuts are divided into type 1 and type II. Type I nuts are the most widely used, and Type 1 nuts are divided into A, B and C grades. Class A and Class B nuts are suitable for machines, equipment and structures with high surface roughness and high precision. C-class nut is used for rough surface, the accuracy of the requirements of the machine is not high, equipment or structure; 2 hexagonal nut thickness is thick, more often used in the occasion of the need for assembly and disassembly. 1 type nut refers to the nominal height of the nut m ≥ 0.8D ordinary hex nut, the type size should be consistent with the provisions of GB / T6170; The type 2 nut height than the type 1 nut to be high, the type size should be consistent with GB / T6175. The purpose of adding type 2 nuts is two: First, by increasing the height of the nut to get a heat-free, relatively low nut. Because D ≤ M16 8 grade 1 nuts do not need heat treatment, so in the 8 nuts, only D> M16 ~ 39 specifications only with 2 nuts, It is clear that the heat treatment of type 1 nuts does not meet the mechanical performance requirements of grade 9 nuts. When the other purpose of the type 2 nut is specified, a better grade 12 nut is obtained. As the height of the nut increases, the lower the quenching and tempering hardness can be achieved to ensure that the stress index, it increases the toughness of the nut. Classification of teeth: standard teeth, regular teeth, fine teeth, very fine teeth and anti-teeth. Material Category: Stainless steel Hex nuts and carbon steel Hex nuts, Hexagon nuts, Hexagonal nuts. According to the thickness of classification: hexagonal thick nut and hexagonal thin nut. According to the use of classification: hot melt copper nut, hot copper nut, embedded copper nut and ultrasonic copper nut

    2017 09/11

  • Hexagon nut
    The nut is a fastener with an internal thread and is used in conjunction with a bolt, with internal threads and in conjunction with the screw to use mechanical parts for movement or power. Nuts are nuts, screwed together with bolts or screws used to fasten the role of the parts, all manufacturing machinery must use an original. Nuts a wide range, we have a common GB, British standard, American Standard, Japan The nuts are divided into carbon steel, high strength, stainless steel, steel and other types according to the material, according to the product attributes corresponding to different national standard number is divided into ordinary, non-standard, (old) GB, the new national standard, , British, German standard. (Such as M8, M16), the United States, the British system with the score or # that specifications (such as 8 #, 10 #, 1/4, 3), the size of the different, different threads are divided into different specifications. / 8) Fasteners, nuts are parts that are tightly connected to the machine and can be connected together by means of internal threads, equivalent nuts and screws. For example, the M4-0.7 nut can only be used with the M4-0.7 screw ( In the nut, M4 refers to the nut diameter of about 4mm, 0.7 refers to the distance between the two threads of 0.7mm); US-made products are also the same, such as 1 / 4-20 nut only with 1 / 4-20 screw With (1/4 finger nut diameter of about 0.25 inches, 20 fingers per inch, there are 20 teeth). Hexagon nut (Hexagon nut) with bolts, screws used in conjunction with the role of fastening machine. Which by the first type of hexagonal nuts the most widely used, C-class nuts for rough surface, the accuracy of the requirements of the machine is not high, equipment or structure; A and B-class nuts for the surface is relatively smooth, high precision requirements Machine, equipment or structure. Type 2 hexagon nut thickness m thick, mostly used often often need to dismantling the occasion. The thickness m of the hexagonal thin nut is thin and is used for the case where the surface space of the connected part is restricted Which by the first type of six nuts with the most widely used, C-class nuts for rough surface, the accuracy of the requirements of the machine is not high, equipment or structure; A and B-class nuts for the surface is relatively smooth, high accuracy requirements Of the machine, equipment or structure. Type 2 hexagon nut thickness M thick, mostly used often often need to wear and tear of the occasion. The thickness M of the hexagonal thin nut is thin and is used for the case where the surface space of the connected part is restricted.

    2017 09/11

  • Metal screws
    Metal Screw. In fact, screws are known, and screws, screw rods are different from each other. Screw is generally called wood screws; is the tip of the kind of tip, pitch larger, generally used to tighten wood parts, plastic parts. Screw is a screw (mechanical screw), is the kind of front-end flat head, pitch is small, uniform, generally used to fasten the metal, machine parts. Common specifications A: Metric screw B: American standard screw C: inch screw A: Metric mechanical screws: Metric Ex: M3 x 6 - P P B: M3 mechanical screw, 6mm long, cross, round flat head, black. Finish Code: The appearance of the specification Head Code: Head shape Thread Code Model: Drive profile: Head profile Length Code: Screw Length (mm) A-1: Thread Code: Screw Model Metric screws directly to the screw diameter of the screw model, Such as M3 that screw diameter of 3.00mm; M4 that is the outer diameter of 4.00mm screws. Metric Thread Size x Pitch: Note: Metric screws on the rear of the screw model, sometimes indicating the screw pitch. Such as M3x0.5, M4x0.70, M5x0.8, M6x1. But because the standard specification, usually not mentioned. A-2: Length Code: Screw Length: Metric screws, directly marked screw length, in mm. The total length of the screw mark, only the length of the head below the calculation, excluding the head height. Except for flat head screws, the total length of the screws is marked with the head height. A-3: Drive Code / Head profile. This is a common specification a. Slotted: word (Minus) b. Phillips: Cross (Plus) c. Phil-Slot: word / cross d. Hex Socket: Hexagon e. One Way: one-way (only lockable, non-exiting) A-4: Head Code. Flat: flat head (after locking, the top flush with the work piece) b. Oval: salad head, O head, half countersunk head c. Round: round head d. Pan: round flat head e. Truss: big round flat head f. Hex: Hexagon head. A-5: Finish Code / appearance processing. Metric tapping screws: Tapping Type is marked directly after the name. Ex: M3 x 6 -PPB, Tapping Type: M3 self-tapping screws, 6mm long, cross, round flat head, black plated. Generally to the product or mark, and then determine the use of Sheet Metal or plastic parts. *** The number of teeth per inch. *** The length of the paragraph US regulatory screw length to be converted, is the metric mm size. Conversion formula: (Length Code / 32) x 25.40 = metric length mm B-3, B-4, B-5: Mark the same way as metric. Folding Edit this paragraph inch screws C-1: Thread Code: The inch is an inch (2.54 cm) within the number of teeth to be fixed, usually 55 degrees. Metric is the distance between the two cords is how much MM to set the pitch, generally 60 degrees To screw the machine to the ground. Also called anchor bolts. The difference between the British screw and the American system is difficult to separate with the visualization. The difference between the British and American screws is that the angle of the screw in the inch screw is 55 degrees, and the screw angle of the American screw is 60 degrees. The two standard screws are in most The time is universal, but the 1/2 size of the screw can not, because the British standard 1/2 of the thread is 1 / 2-12 teeth, and the US system is 1 / 2-13 teeth.

    2017 09/11

  • Self drilling screws
    Screw is the use of objects of the circular circular rotation and friction of the physical and mathematical principles, step by step to fasten the tools of the tools. Drilling screw is the screw at the front of the screw with self-tapping head. Screw is thousands of years of people's production and life in the common invention, according to the application field, it is the first major inventions of mankind. Drilling screw is a new invention in recent years, also known as self-tapping screws. The screw is the general saying of the fastener, the daily oral language. The tail of the drilling screw is tail or tail tip, without auxiliary processing, can be directly in the installation of materials, basic materials, drilling, tapping, locking, substantial savings in construction time. Comparison of ordinary screws, its toughness and maintain the high strength, the combination of a long time will not loose, the use of safe drilling tapping once completed simple operation. Uses: It is a kind of wood screws, mainly used in the steel structure of the color steel tile fixed can also be used for simple construction of thin plate fixed. It can not be used for metal and metal bonding Material is iron, stainless steel two kinds of stainless steel which is divided into a variety of materials. Model: Φ4.2 / Φ4.8 / Φ5.5 / Φ6.3mm, the specific length can be agreed upon on request. According to different drilling tail can be divided into: Round head / cross / plum, countersunk head (flat head) / rice / cross / plum, hexagonal Division, round head Division (large flat head), horn head 1, the heart hardness: standard: HRC32-40 The company's products measured HRC31.7-39.0. 2, the surface hardness: Standard: HV600-700 The company's products measured for HV620 or so. 3, infiltration layer: 4 # -6 #: 0.05-0.18mm 8 # -12 #: 0.10-0.23mm 14 #: 0.15-0.28mm 4, torque: size, drilling, screw, TYPE BSDTYPE CSDINCH-LBKG-CMINCH-LBKG-CM4 # (2.9) 141614166 # (3.5) 242824288 # (4.2) 4248485510 # (4.8) 6170657512 # (5.5) 9210610011514 # ) 150173156180.

    2017 09/11

  • Self tapping screws
    Self-tapping screws are generally pointed, thick teeth, hard wood screws, but also aluminum, plastic. A special self-tapping screw for metal hole threading is called wire tapping. Self-tapping screws for non-metallic or softer metal, no bottom hole and tapping; self-tapping screws are pointed, so as to "self-attack"; ordinary screws are flat head, the same thickness. Self-tapping screw is said: drilling holes for the hole without tapping, with the screws and the general difference, the head for the sharp, teeth from the relatively large, and no trace of wire like a bit, you can not directly into the tapping , Metal and plastic usually use this method. It can be in the consolidation of the material, by its own thread, will be solidified "attack - drill, squeeze, pressure" the corresponding thread, so that closely with each other Self-tapping screw is a screw with a drill bit, through a dedicated power tool construction, drilling, tapping, fixed, locking once completed. Self-tapping screws are mainly used for the connection and fixing of some thin plate pieces, such as the connection of color steel plate and color steel plate, the connection of color steel plate and purlins, wall beam, etc., and its penetrating power is generally not more than 6mm, the maximum does not exceed 12mm. Self-tapping screws are often exposed to the outside, and they have a strong corrosion resistance; the rubber seal can ensure that the screw is not seepage and has good corrosion resistance. Self-tapping screws are usually described by the screw diameter series, the length of each thread thread length and the length of the screw to describe the three parameters. The diameter of the screw diameter is 10 and 12, the corresponding screw diameter is 4.87mm and 5.43mm respectively. The number of threads per length is 14,16,24 three levels, the more the number of threads per inch, Drilling ability is stronger.

    2017 09/11

  • Cylindrical pin cnc machining
    Cylindrical pin has more used high quality carbon structural steel as raw materials manufacturing. In general, choose C35 more material, C45, but shall be heat treated. High strength request of bearing steel. Mainly used for positioning, also can be used to connect, he relies on interference fit is fixed inside the pin hole. Cylindrical pin used to locate is usually not affected by load or small load, the number of not less than two, on the direction of fitting of the whole structure of a symmetric distribution, from as far as possible, the length of the pins in each fitting within about 1 ~ 2 times the diameter of the small. Cylindrical pin have common cylindrical pin, inner cylindrical pin, cylinder pin, perforated pin, elastic cylindrical pin, etc. Cylindrical pin shaft can also do with a straight cylindrical pin shaft can do, even the centering pin. So what is the difference between the shaft and pin. Shaft can be used to transfer torque, bending moment and torque under, cylindrical pin used to locate, bear extrusion pressure and shear forces.

    2017 08/31

  • Metal truning machining
    Turning means that the lathe machining is part of the machining. The machining of the lathe is mainly done by turning the workpiece. The lathe is mainly used for machining shafts, plates, sleeves and other workpieces with slewing surfaces, and is the most widely used class of machine tools for machinery manufacturing and repair plants. Turning is the use of the workpiece in the lathe relative to the tool rotation of the workpiece cutting method. The cutting energy of the turning is mainly provided by the workpiece rather than the tool. Turning is the most basic and most common method of cutting, in the production occupies a very important position. Turning is suitable for processing the rotating surface, most of the workpiece with a rotating surface can be machined with turning methods, such as inside and outside the cylindrical surface, inside and outside the conical surface, face, groove, thread and rotary forming surface, the tool is mainly used.

    2017 08/29

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