CN210676746U

CN210676746U - Cold heading forming device of brake adjusting shaft sleeve

Info

Publication number: CN210676746U
Application number: CN201920828211.2U
Authority: CN
Inventors: 詹怀波; 路凤
Original assignee: Penn Engineering Automotive Fasteners Kunshan Co ltd
Current assignee: Penn Engineering Automotive Fasteners Kunshan Co ltd
Priority date: 2019-06-04
Filing date: 2019-06-04
Publication date: 2020-06-05
Anticipated expiration: 2029-06-04

Abstract

The utility model discloses a cold-heading forming device of brake adjusting collar, this cold-heading forming device include the cold heading machine, and install in mould subassembly on the cold heading machine, mould subassembly includes a plurality of moulds. The utility model discloses can cooperate the disposable processing of accomplishing the formed part of brake adjusting collar with many cold-heading stations, compare the rate of utilization that can improve raw and other materials greatly in the mode of production of machining, reduce the material extravagant, save the processing cost. The utility model discloses the formed part size that obtains is guaranteed by each mould structure to guarantee that the size of formed part is more stable, the direct cold-heading of brake adjusting collar formed part takes shape, can guarantee that the metal lines of formed part is complete, has improved the intensity of formed part.

Description

Cold heading forming device of brake adjusting shaft sleeve

Technical Field

The utility model relates to a machine-building field, specific is a cold-heading forming device of brake adjusting collar.

Background

The brake adjusting shaft sleeve is an adjusting part used for an automobile parking system, and comprises a head part 1, a flange part 2 and a rod part 3 which are connected up and down, wherein a plurality of oil grooves 4 are concavely arranged on the end surface of the head part 1, the flange part 2 is in a hexagonal shape, and the end surface of the bottom side of the rod part 3 is in a spiral structure, as shown in fig. 1. In addition, the brake adjusting shaft sleeve is also provided with a through hole along the axial direction, the through hole can be divided into a third hole 7, a second hole 6 and a first hole 5 with different diameters from the head part to the rod part, the second hole is integrally positioned in the rod part, and a hole section of the second hole is provided with a thread.

Because this brake adjustment axle sleeve structure is comparatively complicated, so the formed part of this brake adjustment axle sleeve adopts the mode production of machining at present, however, the mode of production of machining not only efficiency is lower, extravagant raw and other materials, and the fibrous structure of the formed part of machining production has the phenomenon of cutting off simultaneously, influences the intensity of formed part.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defect among the prior art, the embodiment of the utility model provides a cold-heading forming device of brake adjusting shaft sleeve, its formed part that is used for replacing the mode production brake adjusting shaft sleeve of pure machining has efficient, saves raw and other materials' advantage.

The embodiment of the application discloses: the utility model provides a cold-heading forming device of axle sleeve is adjusted in brake, includes the cold heading machine, and install in mould subassembly on the cold heading machine, mould subassembly includes:

the first die is used for shaping a wire blank to obtain a head parison and a rod parison which are connected up and down, and the first die is also used for forming a first hole at the bottom of the rod parison;

the second die is used for positively extruding the rod part parison to form a second hole connected with the first hole, and the second die is also used for forming a third blank hole in the top of the head part parison;

a third die for backward extruding the head parison to increase a hole depth of the third blank hole;

the fourth die is used for forming part of the head parison into a flange part parison and forming an oil groove on the top of the head parison, and the fourth die is also used for forming a lower spiral surface on the end surface of the bottom of the rod part parison;

a fifth mold for removing the head parison between the second hole and the third blank hole to place the second hole in communication with the third blank hole;

and the sixth die is used for forming the third blank hole into a third hole and trimming the flange part parison into a flange part.

The first main die comprises a main die cushion block, a nitrogen spring and a main die core which are sequentially arranged from bottom to top, the first main die further comprises a main die shell and a first main die ejector pin, the main die shell is used for accommodating the main die core and the nitrogen spring so that the main die core can slide in the main die shell in a manner of abutting against the main die cushion block through the nitrogen spring, and the first main die ejector pin can penetrate into a die cavity of the main die core from the bottom of the main die core; the first stamping die comprises a stamping die shell, and a stamping die cushion block and a stamping die stamping rod which are sequentially arranged in the stamping die shell from top to bottom, wherein the lower end of the stamping die stamping rod extends into a cavity of a stamping die core at the lower end of the stamping die shell.

The second die comprises a second main die and a second stamping die which are correspondingly arranged, the second main die comprises a main die cushion block, a nitrogen spring and a main die core which are sequentially arranged from bottom to top, the second main die further comprises a main die shell, a second main die ejector pin and a second ejector pin sleeve, the main die shell is used for accommodating the main die core and the nitrogen spring so that the main die core can be abutted and slid with the main die cushion block through the nitrogen spring in the main die shell, the second ejector pin sleeve is sleeved on the second main die ejector pin and penetrates into the die cavity of the main die core from the bottom of the main die core, and the lower end of the second main die ejector pin is abutted with the main die cushion block; the second stamping die comprises a stamping die shell, and a stamping die cushion block and a stamping die stamping rod which are sequentially arranged in the stamping die shell from top to bottom, wherein the lower end of the stamping die stamping rod extends into a die cavity of a stamping die core at the lower end of the stamping die shell.

Further, the third die comprises a third main die and a third punch die which are correspondingly arranged, the third main die comprises a main die cushion block and a main die shell which are sequentially arranged from bottom to top, a main die core is arranged in the main die shell, the third main die further comprises a third main die ejector pin, a third ejector pin sleeve and an auxiliary push rod, the third ejector pin sleeve is sleeved on the third main die ejector pin and penetrates into the die cavity of the main die core from the bottom of the main die core, the auxiliary push rod penetrates through the main die cushion block and abuts against the third ejector pin sleeve, and therefore when the auxiliary push rod pushes the third ejector pin sleeve, the wire blank which is processed by the third die is ejected out of the third main die; the third stamping die comprises a stamping die shell, and a stamping die cushion block and a stamping die stamping rod which are sequentially arranged in the stamping die shell from top to bottom, wherein the stamping die stamping rod extends out of the stamping die shell and is opposite to the main die core of the third main die.

Further, the fourth mold comprises a fourth main mold and a fourth stamping die which are correspondingly arranged, the fourth main mold comprises a main mold cushion block and a main mold shell which are sequentially arranged from bottom to top, a main mould core is arranged in the main mould shell, the fourth main mould also comprises a fourth main mould thimble, a fourth thimble sleeve and an auxiliary push rod, the lower end of the fourth main mold thimble abuts against the main mold cushion block, the fourth thimble sleeve is sleeved on the fourth main mold thimble and penetrates into the cavity of the main mold core from the bottom of the main mold core, the end surface of the fourth thimble sleeve penetrating into the cavity of the main die core is in a spiral shape copying with the lower spiral surface, the auxiliary push rod penetrates through the main die cushion block and is abutted against the fourth thimble sleeve, so as to eject the wire blank processed by the fourth die out of the fourth main die when the auxiliary push rod pushes the fourth thimble sleeve; the fourth stamping die comprises a stamping die shell, and a stamping die cushion block and a stamping die stamping rod which are sequentially arranged in the stamping die shell from top to bottom, wherein the lower end of the stamping die stamping rod extends into a cavity of the stamping die core, which is opposite to the main die core, at the lower end of the stamping die shell.

Further, the fifth mold comprises a fifth main mold and a fifth punch die which are correspondingly arranged, the fifth main mold comprises a main mold cushion block, a disc spring and a main mold core which are sequentially arranged from bottom to top, the fifth main mold further comprises a main mold shell, a fifth main mold thimble, a fifth thimble sleeve and an auxiliary push rod, the main mold shell is used for accommodating the main mold core and the disc spring so that the main mold core can be abutted and slid with the disc spring in the main mold shell, the lower end of the fifth main mold thimble is abutted with the main mold cushion block, the fifth thimble sleeve is sleeved on the fifth main mold thimble and penetrates into the cavity of the main mold core from the bottom of the main mold core, the end face of the fifth thimble sleeve penetrating into the cavity of the main mold core is in a spiral shape which is in a shape of being in a spiral with the lower face, and the auxiliary push rod penetrates through the main mold and is abutted with the fifth thimble sleeve, so as to eject the wire blank processed by the fifth die out of the fifth main die when the auxiliary push rod pushes the fifth thimble sleeve; the fifth stamping die comprises a stamping die shell and a stamping die stamping rod, the lower end face of the stamping die stamping rod is in profile modeling with the stamping die core of the fourth stamping die, and a discharge opening communicated with the lower end face of the stamping die stamping rod is formed in the stamping die stamping rod.

Further, the sixth mold comprises a sixth main mold and a sixth stamping die which are correspondingly arranged, the sixth main mold comprises a main mold shell, the lower trimming die and the main die cushion block which are connected in an up-and-down abutting mode are arranged in the main die shell, the sixth main die also comprises a sixth main die ejector pin, a sixth ejector pin sleeve and an auxiliary push rod, the lower end of the sixth main die ejector pin is abutted against the main die cushion block, the sixth ejector pin sleeve is sleeved on the sixth main die ejector pin and penetrates into the hollow cavity of the lower trimming die from the bottom of the lower trimming die together, the end surface of the sixth thimble sleeve penetrating into the cavity of the lower punching and trimming die is spiral-shaped and is profiled with the lower spiral surface, the auxiliary push rod penetrates through the main die cushion block and is abutted against the sixth thimble sleeve, so that the molded part processed by the sixth mold is ejected out of the sixth main mold when the auxiliary push rod pushes the sixth ejector pin sleeve; the sixth stamping die comprises a stamping die shell and an upper stamping trimming die, the upper stamping trimming die is opposite to the cutting edge of the lower stamping trimming die, and a discharge hole communicated with the hollow cavity of the lower stamping trimming die is formed in the stamping die shell.

Further, the cold heading forming die set further comprises a clamp for providing the wire blank to the first die, for moving out the formed part processed by the sixth die, and for transferring the wire blank among the first die, the second die, the third die, the fourth die, the fifth die and the sixth die.

Further, the clamping surface of the clamp for transferring the wire blank processed by the fifth die to the sixth die is provided with anti-slip lines for preventing the wire blank from sliding relative to the clamping surface.

The utility model has the advantages as follows:

1. the utility model provides a cold-heading forming device of brake adjusting collar can cooperate the disposable processing of the formed part of accomplishing brake adjusting collar with many cold-heading stations to reduce the process that the machine adds the hole, not only make whole course of working reduce an equipment, reduced the shaping process time simultaneously. The size of the formed part is ensured by each die structure, so that the size of the formed part is ensured to be more stable.

2. The utility model provides a cold-heading forming device of brake adjusting shaft sleeve, the direct cold-heading of the brake adjusting shaft sleeve formed part that processing obtained takes shape, and the metal lines that can guarantee the formed part are complete, has improved the intensity of formed part.

3. The utility model provides a cold-heading forming device of brake adjusting collar, the production mode of comparing in machining can improve the rate of utilization of raw and other materials greatly, has reduced the material waste, saves the processing cost.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a brake adjusting sleeve according to an embodiment of the present invention;

FIG. 2 is a right side view of FIG. 1;

fig. 3 is a schematic structural diagram of a first mold in an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a second mold in an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a third mold in the embodiment of the present invention;

fig. 6 is a schematic structural diagram of a fourth mold in the embodiment of the present invention;

fig. 7 is a schematic structural diagram of a fifth mold in the embodiment of the present invention;

fig. 8 is a schematic structural diagram of a sixth mold in an embodiment of the present invention;

fig. 9 is a schematic structural view of a fourth thimble sleeve according to an embodiment of the present invention;

fig. 10 is a schematic structural view of a wire blank that is not processed by the die assembly in an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a wire blank machined by a first die in an embodiment of the present invention;

fig. 12 is a schematic structural view of the wire blank machined by the second die in the embodiment of the present invention;

fig. 13 is a schematic structural view of the wire blank machined by the third die in the embodiment of the present invention;

fig. 14 is a schematic structural view of the wire blank machined by the fourth die in the embodiment of the present invention;

fig. 15 is a schematic structural view of the wire blank machined by the fifth die in the embodiment of the present invention;

fig. 16 is a schematic structural view of a formed part processed by a sixth mold according to an embodiment of the present invention;

reference numerals of the above figures:

100. a first mold; 200. a second mold; 300. a third mold; 400. a fourth mold; 500. a fifth mold; 600. a sixth mold; 700. a clip; 1000. wire stock;

1. a head portion; 2. a flange portion; 3. a rod portion; 4. an oil sump; 5. a first hole; 6. a second hole; 7. a third aperture;

101. a first master mold; 102. a first die; 103. a first main mold thimble;

201. a second master mold 202, a second die; 203. a second main mold thimble, 204, a second thimble sleeve;

301. a third master die 302, a third die; 303. a third main mold thimble, 304, a third thimble sleeve;

401. a fourth master mold 402, a fourth die; 403. a fourth main mold thimble, 404, a fourth thimble sleeve;

501. a fifth master die 502, a fifth die; 503. a fifth main mold thimble, 504, a fifth thimble sleeve;

601. a sixth master die, 602, and a sixth die; 603. a sixth main mold thimble, 604, a sixth thimble sleeve;

10. a main die cushion block; 20. a nitrogen spring; 21. a disc spring; 30. a main mold core; 31. punching a trimming die downwards; 40. a main formwork; 50. a die stamping shell 60 and a die stamping cushion block; 70. punching a die and a rod; 80. punching a mold core; 81. punching an upper trimming die; 90. an auxiliary push rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model discloses a cold-heading technology processing brake adjusting axle sleeve particularly, is based on a cold-heading forming device.

Referring to fig. 3, 4, 5, 6, 7 and 8 in combination with fig. 1 and 2, the cold heading forming apparatus includes a cold heading machine, and a die assembly mounted on the cold heading machine, the die assembly including:

a first die 100, the first die 100 being used for shaping the wire blank 1000 to obtain a head parison and a stem parison connected up and down, the first die 100 being further used for forming a first hole 5 in the bottom of the stem parison;

a second die 200, said second die 200 being adapted to forward extrude said stem parison to form a second hole 6 connected to said first hole 5, said second die 200 being further adapted to form a third parison hole in the top of said head parison;

a third die 300, the third die 300 being configured to perform backward extrusion on the head parison to increase the hole depth of the third blank hole;

a fourth mold 400, wherein the fourth mold 400 is used for forming part of the head parison into a flange parison and forming an oil groove 4 in the top of the head parison, and the fourth mold 400 is also used for forming a lower spiral surface on the end surface of the bottom of the rod parison;

a fifth mold 500, said fifth mold 500 for removing a head parison between said second hole 6 and said third blank hole to place said second hole 6 in communication with said third blank hole;

and a sixth die 600, wherein the sixth die 600 is used for forming the third blank hole into a third hole 7 and trimming the flange part parison into a flange part 2.

Borrow by above-mentioned cold-heading device, make the utility model discloses can cooperate disposable completion brake adjusting shaft sleeve's formed part with many cold-heading stations processing to reduce the process that the machine adds the hole, not only make whole course of working reduce an equipment, reduced the shaping process time simultaneously. The size of the formed part is ensured by each die structure, so that the size of the formed part is ensured to be more stable. And, the utility model discloses compare in the production methods of machining can improve the rate of utilization of raw and other materials greatly, it is extravagant to have reduced the material, saves the processing cost.

Specifically, referring to fig. 3, the first mold 100 includes a first main mold 101 and a first punch die 102, which are correspondingly disposed, where the first main mold 101 includes a main mold cushion block 10, a nitrogen spring 20, and a main mold core 30, which are sequentially disposed from bottom to top, the first main mold 101 further includes a main mold shell 40 and a first main mold thimble 103, the main mold shell 40 is configured to accommodate the main mold core 30 and the nitrogen spring 20, so that the main mold core 30 can slide in the main mold shell 40 in an abutting manner with the main mold cushion block 10 through the nitrogen spring 20, and the first main mold thimble 103 can penetrate into a cavity of the main mold core 30 from the bottom of the main mold core 30; the first die 102 comprises a die stamping shell 50, and a die stamping cushion block 60 and a die stamping rod 70 which are sequentially arranged in the die stamping shell 50 from top to bottom, wherein the lower end of the die stamping rod 70 extends into a cavity of a die core 80 at the lower end of the die stamping shell 50. The first main die 101 can perform floating shaping on the wire blank 1000 through the nitrogen spring 20 during processing, so that the forming precision of a product can be greatly controlled.

Referring to fig. 4, the second mold 200 includes a second main mold 201 and a second punch 202, the second main mold 201 includes a main mold cushion block 10, a nitrogen spring 20 and a main mold core 30, which are sequentially disposed from bottom to top, the second main mold 201 further includes a main mold shell 40, a second main mold thimble 203 and a second thimble sleeve 204, the main mold shell 40 is configured to accommodate the main mold core 30 and the nitrogen spring 20, so that the main mold core 30 can slide in the main mold shell 40 in an abutting manner with the main mold cushion block 10 through the nitrogen spring 20, the second thimble sleeve 204 is sleeved on the second main mold thimble 203 and penetrates into the cavity of the main mold core 30 from the bottom of the main mold core 30, wherein the lower end of the second main mold thimble 203 abuts against the main mold cushion block 10; the second die 202 comprises a die stamping shell 50, and a die stamping cushion block 60 and a die stamping rod 70 which are sequentially arranged in the die stamping shell 50 from top to bottom, wherein the lower end of the die stamping rod 70 extends into a cavity of a die core 80 at the lower end of the die stamping shell 50. The second main die performs floating forward extrusion on the wire blank 1000 through the nitrogen spring 20, so that the problem of root material overlapping in the forming process of the wire blank 1000 can be solved, the spring force needs to be calculated, the part can be bent when the force is too small,

preferably, the number of the nitrogen springs 20 in the first main mold 101 and the second main mold may be a plurality of nitrogen springs 20 arranged around the first main mold thimble 103 or the second main mold thimble 203, for example, 6 nitrogen springs 20 with a maximum load of 0.6 ton are arranged.

Referring to fig. 5, the third mold 300 includes a third main mold 301 and a third punch die 302, the third main mold 301 includes a main mold cushion block 10 and a main mold shell 40 sequentially arranged from bottom to top, a main mold core 30 is arranged in the main mold shell 40, the third main mold 301 further includes a third main mold thimble 303, a third thimble sleeve 304 and an auxiliary push rod 90, the third thimble sleeve 304 is sleeved on the third main mold thimble 303 and penetrates into the cavity of the main mold core 30 from the bottom of the main mold core 30, the auxiliary push rod 90 passes through the main mold cushion block 10 and abuts against the third thimble sleeve 304, so that when the auxiliary push rod 90 pushes the third thimble sleeve 304, the wire blank 1000 processed by the third mold 300 is ejected out of the third main mold 301; the third die 302 includes a die stamping case 50, and a die stamping cushion block 60 and a die stamping rod 70 which are sequentially arranged in the die stamping case 50 from top to bottom, wherein the die stamping rod 70 extends out of the die stamping case 50 and is opposite to the main die core 30 of the third main die. Since the main mold core 30 of the third main mold 301 is embedded in the main mold shell 40, during and after the third mold 300 is processed, the third main mold ejector pins 303, the third ejector pin sleeves 304 and the auxiliary push rods 90 are required to cooperate with the wire rod blank 1000 to receive or eject the processed wire rod blank 1000, so that the wire rod blank 1000 can be clamped and transported.

Referring to fig. 6, the fourth mold 400 includes a fourth main mold 401 and a fourth die 402 that are correspondingly disposed, the fourth main mold 401 includes a main mold cushion block 10 and a main mold shell 40 that are sequentially disposed from bottom to top, a main mold core 30 is disposed in the main mold shell 40, the fourth main mold 401 further includes a fourth main mold thimble 403, a fourth thimble sleeve 404, and an auxiliary push rod 90, a lower end of the fourth main mold thimble 403 is abutted to the main mold cushion block 10, the fourth thimble sleeve 404 is sleeved on the fourth main mold thimble 403 and penetrates into a mold cavity of the main mold core 30 from a bottom of the main mold core 30, an end surface of the fourth thimble sleeve 404 penetrating into the mold cavity of the main mold core 30 is a spiral shape (fig. 9) that is profiled to the lower spiral surface, and the auxiliary push rod 90 penetrates through the main mold cushion block 10 and abuts to the fourth thimble sleeve 404, so that the fourth thimble sleeve 400 completes the abutting when the auxiliary push rod 90 pushes the fourth thimble sleeve 404 Ejecting the fourth main mold 401 from the processed wire blank 1000; the fourth die 402 includes a die stamping shell 50, and a die pad block 60 and a die stamping rod 70 which are sequentially arranged in the die stamping shell 50 from top to bottom, wherein the lower end of the die stamping rod 70 extends into a cavity of the die stamping core 80, which is opposite to the main die core 30, at the lower end of the die stamping shell 50.

Referring to fig. 7, the fifth mold 500 includes a fifth main mold 501 and a fifth punch 502, the fifth main mold includes a main mold cushion block 10, a disc spring, and a main mold core 30, which are sequentially disposed from bottom to top, the fifth main mold 501 further includes a main mold shell 40, a fifth main mold thimble 503, a fifth thimble sleeve 504, and an auxiliary push rod 90, the main mold shell 40 is configured to accommodate the main mold core 30 and the disc spring 21, so that the main mold core 30 can slide in the main mold shell 40 in a manner abutting against the disc spring 21, a lower end of the fifth main mold thimble 503 abuts against the main mold cushion block 10, the fifth thimble sleeve 504 is sleeved on the fifth main mold thimble and penetrates into the cavity of the main mold core 30 from the bottom of the main mold core 30, wherein an end face of the fifth thimble sleeve 504 penetrating into the cavity of the main mold core 30 is spiral-shaped and follows the lower spiral surface, the auxiliary push rod 90 passes through the main die cushion block 10 and abuts against the fifth thimble sleeve 504, so that when the auxiliary push rod 90 pushes the fifth thimble sleeve 504, the wire blank 1000 which is completely processed by the fifth die 500 is ejected out of the fifth main die; the fifth die 502 comprises a die stamping shell 50 and a die stamping rod 70, the lower end surface of the die stamping rod 70 is in copying with the die stamping core 80 of the fourth die, and a discharge opening communicated with the lower end surface of the die stamping rod 70 is formed in the die stamping rod 70. The fifth master die 501 is mainly used to punch the material through the second hole 6 and the third hole 7, and when the fifth master die is operated, the structure and the position of the oil groove 4 are ensured as needed, so that the lower end surface of the die punch rod 70 of the fifth die 502 and the die core 80 of the fourth die are contoured, the structure of the oil groove 4 of the head can be protected, and the positioning of the wire rod blank 1000 during processing is facilitated, and the processing deformation is prevented.

Referring to fig. 8, the sixth mold 600 includes a sixth main mold 601 and a sixth die 602 which are correspondingly disposed, the sixth main mold 601 includes a main mold shell 40, a lower trimming die 31 and a main mold cushion block 10 which are connected to each other in an up-and-down abutting manner are disposed in the main mold shell 40, the sixth main mold 601 further includes a sixth main mold ejector pin 603, a sixth ejector pin sleeve 604 and an auxiliary push rod 90, a lower end of the sixth main mold ejector pin 603 abuts against the main mold cushion block 10, the sixth ejector pin sleeve 604 is sleeved on the sixth main mold ejector pin 603 and penetrates into a hollow cavity of the lower trimming die 31 from a bottom of the lower trimming die 31, an end face of the sixth ejector pin sleeve 604 penetrating into a cavity of the lower trimming die 31 is spiral-shaped to be contoured with the lower spiral face, the auxiliary push rod 90 penetrates through the main mold cushion block 10 and the sixth ejector pin sleeve 604 to abut against the sixth ejector pin sleeve 600 when the auxiliary push rod 90 pushes the sixth ejector pin sleeve 604 Ejecting the sixth master mold 601 from the processed molded part; the sixth die 602 comprises a die shell 50 and an upper trimming die 81, wherein the upper trimming die 81 is opposite to the cutting edge of the lower trimming die 31, and a discharge opening communicated with the hollow cavity of the lower trimming die 31 is formed in the die shell 50.

In addition, the cold heading forming die set may further include a clamp 700 for supplying the wire blank 1000 to the first die 100, for removing the formed part processed by the sixth die 600, and for transferring the wire blank 1000 between the first die 100, the second die 200, the third die 300, the fourth die 400, the fifth die 500, and the sixth die 600. In a preferred embodiment, the clamping surface of the clamp 700 for transferring the wire blank 1000 processed by the fifth die 500 to the sixth die 600 is provided with anti-slip patterns for preventing the wire blank 1000 from sliding relative to the clamping surface. It is right flange portion parison cut edge need prevent that wire rod blank 1000 from taking place the corner slip when transporting, so press from both sides the son and need do some net lines, prevent product and decide when going out skid and turn to that leads to.

The embodiment of the application also discloses: a manufacturing method of a brake adjusting shaft sleeve comprises the following steps:

s1: cutting the wire to obtain a wire blank 1000 (fig. 10);

s2: performing cold heading processing on the wire blank 1000 by using the cold heading forming device of the embodiment to obtain a formed part of the brake adjusting shaft sleeve;

s3: tapping the second step hole section of the forming piece;

wherein step "S2" includes:

s2.1: the wire blank 1000 is shaped to obtain an upper and lower head parison and a stem parison, at the bottom of which a first hole 5 is formed. The semi-finished product after this step is shown in fig. 11.

In this step, the wire blank 1000 may be clamped to the first master die 101 by the clamp 700, and the wire blank 1000 is shaped and preformed in a head size by the first die 100.

S2.2: the stem parison is forward extruded to form a second hole 6 connected to the first hole 5 and a third hole is formed in the top of the head parison. The semi-finished product after this step is shown in fig. 12.

The finished wire blank 1000 of the first die 100 is transferred to the second die 200 by the gripper 700, and the second main die 202 is floating by its movable main die and is extruding the first hole 5, the second hole 6, and pre-forming the third hole 7.

S2.3: backward extruding the head parison to increase the hole depth of the third parison hole. The semi-finished product after this step is shown in fig. 13.

The finished wire blank 1000 of the second die 200 is transferred to the third die 300 by the gripper 700, and the third main die 301 is pushed back into the third hole 7 by the punch 70.

S2.4: and forming part of the head parison into a flange part parison, forming an oil groove 4 in the top of the head parison, and forming a lower spiral surface on the end surface of the bottom of the rod part parison. The semi-finished product after this step is shown in fig. 14.

The wire blank 1000 after the third die 300 is completed is transferred to the fourth die 400 by the clamp 700, and the fourth main die 401 and the fourth die 402 are cold-headed and matched to form the flange portion parison, the oil groove 4, and the lower helicoid.

S2.5: removing the head parison between the second hole 6 and the third blank hole to place the second hole 6 in communication with the third blank hole. The semi-finished product after this step is shown in fig. 15.

The wire rod blank 1000 processed by the fourth die 400 is transferred to the fifth die 500 by the clamp 700, and the intermediate waste is removed by punching by the fifth main die ejector pin 503, so that the wire rod blank 1000 is in a hollow state.

S2.6: the third blank hole is formed into a third hole 7 and the flange portion parison is trimmed to form the flange portion 2. The molded article after this step is shown in fig. 16.

The wire blank 1000 processed by the fourth die 400 is transferred to the fifth die 500 by the clamp 700, trimming is performed by the upper trimming die 81 and the lower trimming die, the molded part is ejected by the ejector pin of the main die, and flash is removed.

Preferably, the formed member is heat-treated and coated with a rust preventive oil after step S3 to improve the structural strength and corrosion prevention performance of the product.

In the manufacturing method provided by the utility model, the cold heading forming link adopts 6 dies and 6 punches, and the production speed can reach 70 per minute. The processing efficiency is much higher than that of a machining type.

The present invention has been explained by using specific embodiments, and the explanation of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims

1. The utility model provides a cold-heading forming device of axle sleeve is adjusted in brake, includes the cold heading machine, and install in mould subassembly on the cold heading machine, its characterized in that, mould subassembly includes:

2. The cold heading forming device for the brake adjusting sleeve as claimed in claim 1, wherein: the first die comprises a first main die and a first stamping die which are correspondingly arranged, the first main die comprises a main die cushion block, a nitrogen spring and a main die core which are sequentially arranged from bottom to top, the first main die further comprises a main die shell and a first main die ejector pin, the main die shell is used for accommodating the main die core and the nitrogen spring so that the main die core can be abutted and slid with the main die cushion block through the nitrogen spring in the main die shell, and the first main die ejector pin can penetrate into a die cavity of the main die core from the bottom of the main die core; the first stamping die comprises a stamping die shell, and a stamping die cushion block and a stamping die stamping rod which are sequentially arranged in the stamping die shell from top to bottom, wherein the lower end of the stamping die stamping rod extends into a cavity of a stamping die core at the lower end of the stamping die shell.

3. The cold heading forming device for the brake adjusting sleeve as claimed in claim 2, wherein: the second die comprises a second main die and a second stamping die which are correspondingly arranged, the second main die comprises a main die cushion block, a nitrogen spring and a main die core which are sequentially arranged from bottom to top, the second main die further comprises a main die shell, a second main die ejector pin and a second ejector pin sleeve, the main die shell is used for accommodating the main die core and the nitrogen spring so that the main die core can be abutted and slid with the main die cushion block in the main die shell through the nitrogen spring, the second ejector pin sleeve is sleeved on the second main die ejector pin and penetrates into a die cavity of the main die core from the bottom of the main die core, and the lower end of the second main die ejector pin is abutted with the main die cushion block; the second stamping die comprises a stamping die shell, and a stamping die cushion block and a stamping die stamping rod which are sequentially arranged in the stamping die shell from top to bottom, wherein the lower end of the stamping die stamping rod extends into a die cavity of a stamping die core at the lower end of the stamping die shell.

4. The cold heading forming device for the brake adjusting sleeve as claimed in claim 1, wherein: the third die comprises a third main die and a third stamping die which are correspondingly arranged, the third main die comprises a main die cushion block and a main die shell which are sequentially arranged from bottom to top, a main die core is arranged in the main die shell, the third main die further comprises a third main die ejector pin, a third ejector pin sleeve and an auxiliary push rod, the third ejector pin sleeve is sleeved on the third main die ejector pin and penetrates into a die cavity of the main die core from the bottom of the main die core, the auxiliary push rod penetrates through the main die cushion block and abuts against the third ejector pin sleeve, and therefore when the auxiliary push rod pushes the third ejector pin sleeve, a wire blank which is processed by the third die is ejected out of the third main die; the third stamping die comprises a stamping die shell, and a stamping die cushion block and a stamping die stamping rod which are sequentially arranged in the stamping die shell from top to bottom, wherein the stamping die stamping rod extends out of the stamping die shell and is opposite to the main die core of the third main die.

5. The cold heading forming device for the brake adjusting sleeve as claimed in claim 1, wherein: the fourth die comprises a fourth main die and a fourth stamping die which are correspondingly arranged, the fourth main die comprises a main die cushion block and a main die shell which are sequentially arranged from bottom to top, a main mould core is arranged in the main mould shell, the fourth main mould also comprises a fourth main mould thimble, a fourth thimble sleeve and an auxiliary push rod, the lower end of the fourth main mold thimble abuts against the main mold cushion block, the fourth thimble sleeve is sleeved on the fourth main mold thimble and penetrates into the cavity of the main mold core from the bottom of the main mold core, the end surface of the fourth thimble sleeve penetrating into the cavity of the main die core is in a spiral shape copying with the lower spiral surface, the auxiliary push rod penetrates through the main die cushion block and is abutted against the fourth thimble sleeve, so as to eject the wire blank processed by the fourth die out of the fourth main die when the auxiliary push rod pushes the fourth thimble sleeve; the fourth stamping die comprises a stamping die shell, and a stamping die cushion block and a stamping die stamping rod which are sequentially arranged in the stamping die shell from top to bottom, wherein the lower end of the stamping die stamping rod extends into a cavity of the stamping die core, which is opposite to the main die core, at the lower end of the stamping die shell.

6. The cold-heading forming device for the brake adjusting sleeve as claimed in claim 5, wherein: the fifth die comprises a fifth main die and a fifth stamping die which are correspondingly arranged, the fifth main die comprises a main die cushion block, a disc spring and a main die core which are sequentially arranged from bottom to top, the fifth main die further comprises a main die shell, a fifth main die ejector pin, a fifth ejector pin sleeve and an auxiliary push rod, the main die shell is used for accommodating the main die core and the disc spring so that the main die core can be abutted and slid with the disc spring in the main die shell, the lower end of the fifth main die ejector pin is abutted with the main die cushion block, the fifth ejector pin sleeve is sleeved on the fifth main die ejector pin and penetrates into a die cavity of the main die core from the bottom of the main die core together, the end face of the fifth ejector pin sleeve penetrating into the die cavity of the main die core is in a spiral shape which is in profile modeling with the lower spiral surface, and the auxiliary push rod penetrates through the main die cushion block and is abutted with the fifth ejector pin sleeve, so as to eject the wire blank processed by the fifth die out of the fifth main die when the auxiliary push rod pushes the fifth thimble sleeve; the fifth stamping die comprises a stamping die shell and a stamping die stamping rod, the lower end face of the stamping die stamping rod is in profile modeling with the stamping die core of the fourth stamping die, and a discharge opening communicated with the lower end face of the stamping die stamping rod is formed in the stamping die stamping rod.

7. The cold heading forming device for the brake adjusting sleeve as claimed in claim 1, wherein: the sixth die comprises a sixth main die and a sixth stamping die which are correspondingly arranged, the sixth main die comprises a main die shell, the lower trimming die and the main die cushion block which are connected in an up-and-down abutting mode are arranged in the main die shell, the sixth main die also comprises a sixth main die ejector pin, a sixth ejector pin sleeve and an auxiliary push rod, the lower end of the sixth main die ejector pin is abutted against the main die cushion block, the sixth ejector pin sleeve is sleeved on the sixth main die ejector pin and penetrates into the hollow cavity of the lower trimming die from the bottom of the lower trimming die together, the end surface of the sixth thimble sleeve penetrating into the cavity of the lower punching and trimming die is spiral-shaped and is profiled with the lower spiral surface, the auxiliary push rod penetrates through the main die cushion block and is abutted against the sixth thimble sleeve, so that the molded part processed by the sixth mold is ejected out of the sixth main mold when the auxiliary push rod pushes the sixth ejector pin sleeve; the sixth stamping die comprises a stamping die shell and an upper stamping trimming die, the upper stamping trimming die is opposite to the cutting edge of the lower stamping trimming die, and a discharge hole communicated with the hollow cavity of the lower stamping trimming die is formed in the stamping die shell.

8. The cold heading forming device for the brake adjusting sleeve as claimed in claim 1, wherein: the cold heading forming device further comprises a clamp which is used for providing the wire blank for the first die, moving out the formed part processed by the sixth die and transferring the wire blank among the first die, the second die, the third die, the fourth die, the fifth die and the sixth die.

9. The cold-heading forming device for the brake adjusting sleeve as claimed in claim 8, wherein: and the clamping surface of the clamp for transferring the wire blank processed by the fifth die to the sixth die is provided with anti-slip lines for preventing the wire blank from sliding relative to the clamping surface.