CN117415266A

CN117415266A - Cold header for fastener machining and machining process

Info

Publication number: CN117415266A
Application number: CN202311456485.0A
Authority: CN
Inventors: 沈敏军; 顾慧红; 池启洪
Original assignee: Zhejiang Baide Precision Hardware Co ltd
Current assignee: Zhejiang Baide Precision Hardware Co ltd
Priority date: 2023-11-03
Filing date: 2023-11-03
Publication date: 2024-01-19

Abstract

The invention belongs to the technical field of cold heading machines, and particularly relates to a cold heading machine for fastener machining and a machining process. The invention avoids deformation of the workpiece body in the process of machining caused by excessive fixing force, thereby affecting machining precision and quality, also avoids vibration or displacement of the workpiece body caused by excessive fixing force, and affects machining quality, and can also lead the stamping force of the stamping cylinder to be in direct proportion to the diameter of the workpiece body, thereby obtaining better machining precision and consistency, and also ensuring that the workpiece cannot cause quality defect due to excessive or insufficient force in the stamping process, thereby improving product quality.

Description

Cold header for fastener machining and machining process

Technical Field

The invention belongs to the technical field of cold heading machines, and particularly relates to a cold heading machine for fastener machining and a machining process.

Background

The cold heading process is one of the new processes of metal pressure machining without cutting, and is one kind of machining process to utilize plastic deformation of metal under the action of external force and to redistribute and transfer the volume of metal with the aid of mold to form required part or blank.

The existing cold header for fastener machining cannot be fixed in time after a workpiece body is placed in a cold header groove, the fixed force cannot be adjusted according to the diameter of the workpiece body, the workpiece body can be deformed, broken or damaged when the fixed force is too large, the workpiece body can be loosened in the machining process when the fixed force is too small, the machining precision and stability are affected, and the product percent of pass of the workpiece body is reduced;

and when cold heading is carried out on the workpiece body, the stamping force required by the workpiece bodies with different diameters also needs to be adjusted, if the same stamping force is used, the workpiece size deviation, shape change or inconsistency is easily caused, the machining precision is reduced, the abrasion of equipment is possibly accelerated, and the service life of the equipment is shortened.

The existing cold header for fastener machining generally uses manpower to collect after finishing cold header of a workpiece body, and the problems of personal errors, low production efficiency, potential safety hazards, working fatigue, labor cost, resource waste and the like possibly exist, so that the production efficiency of the device is reduced, and the practicability of the device is reduced.

To this end, we propose a cold header for fastener machining and a machining process to solve the above problems.

Disclosure of Invention

The invention aims to solve the problems and provides a cold header for processing a fastener and a processing technology.

In order to achieve the above purpose, the present invention adopts the following technical scheme: the utility model provides a cold heading machine and processing technology for fastener processing, includes the base, the upper end fixedly connected with of base a plurality of positions mutually corresponding support column, a plurality of the same connecting plate of upper end fixedly connected with of support column, the upper end fixedly connected with operation panel of base, gear motor is installed to the outer wall of operation panel, gear motor's output fixedly connected with carousel, the supporting bench that two positions mutually correspond of outer wall fixedly connected with of operation panel, two feeding mechanism and pan feeding mechanism are installed respectively to the upper end of supporting bench, a plurality of cold heading grooves that mutually correspond are seted up to the upper end outer wall of carousel, a plurality of fixed establishment is all installed to the inner wall in cold heading groove, a plurality of first electric putter is all installed to the inner wall in cold heading groove, a plurality of buffer gear is all installed to the upper end of first electric putter, cold heading mechanism is installed to the outer wall of connecting plate.

Preferably, the feeding mechanism comprises a first fixing plate fixedly connected to the upper end of one of the supporting tables, and a feeding groove is arranged on the outer wall of the first fixing plate.

Preferably, the feeding mechanism comprises a second fixing plate fixedly connected to the upper end of one supporting table, the upper end of the second fixing plate is provided with a collecting pump, the input end of the collecting pump is communicated with a first collecting pipe, and the output end of the collecting pump is communicated with a second collecting pipe.

Preferably, the fixing mechanism comprises a plurality of second electric push rods fixedly connected to the inner wall of the cold heading groove, the output ends of the second electric push rods are fixedly connected with first limiting plates, the outer walls of the first limiting plates are provided with through holes, guide rods are slidably connected to the corresponding through holes, the outer walls of the guide rods are fixedly connected with the same second limiting plates, one of the guide rods is provided with a pressing switch, and the outer walls of the output ends of the second electric push rods are provided with power transformation mechanisms.

Preferably, the buffer mechanism comprises a third fixed plate fixedly connected with the output end of the first electric push rod, a plurality of damping springs corresponding to each other in positions are installed on the outer wall of the third fixed plate, the upper ends of the damping springs are fixedly connected with the same fourth fixed plate, the upper ends of the fourth fixed plates are in abutting connection with the workpiece body, and the upper ends of the fourth fixed plates are provided with double-acting switches.

Preferably, the power transformation mechanism comprises a supporting rod fixedly connected to the outer wall of the output end of the second electric push rod, the outer wall of the supporting rod is fixedly connected with a conductive block, a protective shell is mounted on the inner wall of the cold heading groove, and a resistor rod matched with the conductive block is fixedly connected to the inner wall of the protective shell.

Preferably, the cold heading mechanism comprises a stamping cylinder fixedly connected to the outer wall of the connecting plate, and the output end of the stamping cylinder is fixedly connected with a cold heading die.

A processing technology for processing a fastener mainly comprises the following steps:

s1, preparing materials: selecting a proper workpiece body for processing, wherein the commonly used workpiece body comprises carbon steel, stainless steel and the like;

s2, cutting the material: cutting the workpiece body into bars with proper lengths;

s3, finishing the steel wire: deoiling and deoxidizing the surface of the cut workpiece body to ensure the quality of the machining process;

s4, steel wire feeding: the pre-kneaded workpiece body is arranged in a feeding mechanism of a cold header for subsequent cold header operation;

s5, cold heading forming: the workpiece body is extruded and deformed by the mechanical force of the cold header and the action of the die to form the workpiece body into threads or other shapes, and axial force and rotational force are required to be applied simultaneously in the process.

Compared with the prior art, the cold header for fastener machining and the machining process have the advantages that:

1. through the second electric putter, first limiting plate, the guide bar, the second limiting plate, press the switch, damping spring and double acting switch mutually support, after the work piece body starts bi-directional switch, because double acting switch and second electric putter electric smelting are connected, second electric putter can be started this moment, then two second electric putter can be started simultaneously, its own output can drive the first limiting plate of rather than fixed connection and move forward, until the outer wall of second limiting plate contradicts and is connected to the work piece body, at this moment under the effect of guide bar, first limiting plate can move forward, until press the switch to start by the second limiting plate, second electric putter can stop work this moment, the too big fixed dynamics of having avoided probably leading to the work piece body to produce deformation in processing, thereby influence machining precision and quality, also avoided too little fixed dynamics to possibly lead to the work piece body to produce vibration or displacement, make the machining result appear the error, influence machining quality.

2. Through the second electric putter, branch, protecting sheathing, conducting shoe and the resistance bar of setting mutually support, because second electric putter output outer wall fixed connection's conducting shoe, can be at rather than assorted resistance bar surface removal, because the resistance bar area of conducting shoe contact is less under the initial condition, so the conducting shoe electric current is great this moment, because conducting shoe and resistance bar all with ram cylinder electric connection, and conducting shoe and external power supply electric connection, ram cylinder's punching press dynamics and the diameter size of work piece body are in direct proportion this moment, thereby obtain better machining precision and uniformity, still can ensure the work piece in the punching press in-process, can not lead to quality defect because of the dynamics is too big or undersize, thereby improve product quality.

3. Through the double acting switch, first electric putter, the second electric putter, the pump that gathers materials, first collecting pipe and second collecting pipe mutually support, accomplish the back to work piece body cold heading, double acting switch can be started again because double acting switch because first electric putter and the equal electric connection of second electric putter this moment, first electric putter can be started to rise this moment, and the second electric putter can be started to withdraw for by the work piece body that cold heading is good, can gather by the staff through first collecting pipe and second collecting pipe under the effect of the pump that gathers materials, make the device punching press accomplish the back automatic collection improve production efficiency, reduce artifical mistake, improve operational environment and make things convenient for subsequent processing, still can promote punching press processing's efficiency and quality, and bring better production environment and economic benefits.

Drawings

FIG. 1 is a schematic perspective view of a cold header for fastener machining and a machining process according to the present invention;

FIG. 2 is a schematic diagram of a three-dimensional structure of a cold header and a process transformation mechanism for fastener machining provided by the invention;

FIG. 3 is a schematic perspective view of a cold header and a feeding mechanism for a machining process for machining fasteners;

FIG. 4 is a schematic perspective view of a cold header and a fixing mechanism for a machining process for machining fasteners;

FIG. 5 is a schematic perspective view of a cold header and a buffer mechanism for fastener processing according to the present invention;

FIG. 6 is an enlarged perspective view of a cold header and a process rotor groove for fastener machining according to the present invention;

fig. 7 is a schematic perspective view of a cold header for fastener processing and a processing technology according to the present invention.

In the figure: 1 a base, 2 a support column, 3 a connecting plate, 4 an operation table, 5 a gear motor, 6 a turntable, 7 a support table, 8 a feeding mechanism, 81 a first fixing plate, 82 a feeding groove, 9 a feeding mechanism, 91 a second fixing plate, 92 a collecting pump, 93 a collecting pipe, 94 a second collecting pipe, 10 a cold heading groove, 11 a fixing mechanism, 111 a second electric push rod, 112 a first limiting plate, 113 a guide rod, 114 a second limiting plate, 115 a press switch, 12 a first electric push rod, 13 a buffer mechanism, 131 a third fixing plate, 132 a damping spring, 133 a fourth fixing plate, 134 a workpiece body, 135 a double-acting switch, 14 a cold heading mechanism, 141 a punching cylinder, 142 a cold heading die, 15 a power transformation mechanism, 151 a support rod, 152 a conductive block, 153 a protective shell and 154 a resistor rod.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

As shown in fig. 1-7, a cold header for fastener processing comprises a base 1, the upper end fixedly connected with support column 2 that a plurality of positions mutually correspond of base 1, the upper end fixedly connected with same connecting plate 3 of a plurality of support columns 2, the upper end fixedly connected with operation panel 4 of base 1, gear motor 5 is installed to the outer wall of operation panel 4, the output fixedly connected with carousel 6 of gear motor 5, the supporting bench 7 that two positions mutually correspond of outer wall fixedly connected with of operation panel 4, feeding mechanism 8 and pan feeding mechanism 9 are installed respectively to the upper end of two supporting benches 7, a plurality of cold-heading groove 10 that position mutually correspond are seted up to the upper end outer wall of carousel 6, fixed establishment 11 is all installed to the inner wall of a plurality of cold-heading groove 10, first electric putter 12 is all installed to the inner wall of a plurality of cold-heading groove 10, buffer gear 13 is all installed to the upper end of a plurality of first electric putter 12, cold-heading mechanism 14 is installed to the outer wall of connecting plate 3.

The feeding mechanism 8 comprises a first fixing plate 81 fixedly connected to the upper end of one supporting table 7, a feeding groove 82 is arranged on the outer wall of the first fixing plate 81, and the feeding mechanism 8 can realize continuous and automatic material conveying, so that the need of manual conveying is reduced, and the production efficiency is improved. It can provide stable and continuous material supply, and ensure smooth operation of production line.

The feeding mechanism 9 comprises a second fixing plate 91 fixedly connected to the upper end of one supporting table 7, the upper end of the second fixing plate 91 is provided with a collecting pump 92, the input end of the collecting pump 92 is communicated with a first collecting pipe 93, and the output end of the collecting pump 92 is communicated with a second collecting pipe 94, so that the device can automatically collect and improve the production efficiency, reduce manual errors, improve the working environment and facilitate subsequent treatment after stamping, the stamping efficiency and quality can be improved, and better production environment and economic benefit can be brought.

The fixed establishment 11 includes a plurality of fixed connection at the second electric putter 111 of cold-heading groove 10 inner wall, the equal fixedly connected with first limiting plate 112 of output of a plurality of second electric putter 111, the through-hole has all been seted up to the outer wall of a plurality of first limiting plates 112, and correspond sliding connection has guide bar 113 in the through-hole, the same second limiting plate 114 of outer wall fixedly connected with of a plurality of guide bars 113, push switch 115 is installed to the outer wall mounting of one of them first limiting plate 112, transformer mechanism 15 is installed to the output outer wall mounting of second electric putter 111, the too big fixed dynamics has been avoided probably to lead to, work piece body 134 produces deformation in the processing, thereby influence machining precision and quality, also avoided too little fixed effort degree too probably to lead to work piece body 134 vibration or displacement, make the machining result appear the error, influence machining quality.

The buffer gear 13 includes the third fixed plate 131 of fixed connection at first electric putter 12 output, the damping spring 132 that a plurality of positions each other correspond is installed to the outer wall of third fixed plate 131, the upper end fixedly connected with of a plurality of damping springs 132 is the same fourth fixed plate 133, the upper end conflict of fourth fixed plate 133 is connected with work piece body 134, double acting switch 135 is installed to the upper end of fourth fixed plate 133, can make work piece body 134 after placing cold heading groove 10, timely quilt is fixed, work piece body 134 has been avoided taking place to rock, the practicality of the device has been improved.

The transformer mechanism 15 includes the branch 151 of fixed connection at second electric putter 111 output outer wall, the outer wall fixedly connected with conducting bar 152 of branch 151, the shell 153 is installed to the inner wall of cold heading groove 10, shell 153's inner wall fixedly connected with and conducting bar 152 assorted resistance rod 154, because conducting bar 152 and resistance rod 154 all with ram cylinder 141 electric connection, and conducting bar 152 and external power electric connection, ram cylinder 141's punching press dynamics is proportional with workpiece body 134's diameter size this moment, thereby obtain better machining precision and uniformity, still can ensure workpiece body 134 in the punching press in-process, can not lead to quality defect because of the dynamics is too big or undersize, thereby improve product quality.

The cold heading mechanism 14 comprises a stamping cylinder 141 fixedly connected to the outer wall of the connecting plate 3, and the output end of the stamping cylinder 141 is fixedly connected with a cold heading die 142.

s1, preparing materials: selecting a proper workpiece body 134 for processing, wherein the workpiece body 134 is commonly used, such as carbon steel, stainless steel and the like;

s2, cutting the material: cutting the workpiece body 134 into bars of appropriate length;

s3, finishing the steel wire: deoiling and deoxidizing the surface of the cut workpiece body 134 to ensure the quality of the machining process;

s4, steel wire feeding: the pre-kneaded workpiece body 134 is arranged in a feeding mechanism of a cold header for subsequent cold header operation;

s5, cold heading forming: the workpiece body 134 is extruded and deformed into a thread or other shape by the mechanical force of the cold header and the action of the die, requiring the application of both axial and rotational forces during this process.

The principle of operation of the present invention will now be described as follows:

firstly, a worker places a workpiece body 134 prefabricated member into a feed chute 82, then the feed chute 82 divides the workpiece body 134 prefabricated member into a plurality of workpiece bodies 134 with different sizes, then the worker starts a gear motor 5, so that the output end of the gear motor 5 drives a turntable 6 to rotate, as a plurality of cold heading grooves 10 with mutually corresponding positions are formed on the outer wall of the upper end of the turntable 6, one of the cold heading grooves 10 with a power transformation mechanism 15 rotates to the lower part of the feed chute 82, when the workpiece body 134 is abutted against a fourth fixing plate 133, under the action of a damping spring 132, the fourth fixing plate 133 can generate downward displacement under the action of the gravity of the workpiece body 134 until the fourth fixing plate 133 is abutted against a double-acting switch 135, and as the double-acting switch 135 is electrically connected with a second electric push rod 111, at this time, the second electric push rods 111 are started, then the two second electric push rods 111 are started simultaneously, the output end of the second electric push rods 111 can drive the first limiting plate 112 fixedly connected with the second electric push rods to move forwards until the outer wall of the second limiting plate 114 is in contact with and connected with the workpiece body 134, at this time, under the action of the guide rod 113, the first limiting plate 112 can move forwards until the press switch 115 is started by the second limiting plate 114, and the press switch 115 is electrically connected with the second electric push rods 111, at this time, the second electric push rods 111 stop working, so that the workpiece body 134 is prevented from being deformed in the machining process due to excessive fixing force, the machining precision and quality are prevented from being influenced, the workpiece body 134 is prevented from vibrating or displacing due to the fact that the machining result is too small, and the machining quality is prevented from being influenced;

in the process of fixing the workpiece body 134, since the conducting block 152 fixedly connected with the outer wall of the output end of the second electric push rod 111 moves on the surface of the resistance rod 154 matched with the conducting block 152 when the second electric push rod 111 works, the conducting block 152 has larger current at the moment because the area of the resistance rod 154 contacted with the conducting block 152 is smaller in the initial state, and the conducting block 152 and the resistance rod 154 are electrically connected with the stamping cylinder 141 and the conducting block 152 is electrically connected with an external power supply, the stamping force of the stamping cylinder 141 is in direct proportion to the diameter of the workpiece body 134, the cold heading die 142 performs cold heading on the workpiece body 134, the stamping force can be matched with the size and the hardness of the workpiece by adjusting the stamping force, so that better processing precision and consistency are obtained, and the quality defect caused by overlarge or overlarge force in the stamping process of the workpiece body 134 can be ensured, so that the product quality is improved;

after cold heading is completed on the workpiece body 134, the double-acting switch 135 can be started again at this moment, because the double-acting switch 135 is electrically connected with the second electric push rod 111 due to the first electric push rod 12, the first electric push rod 12 can be started to be lifted at this moment, and the second electric push rod 111 can be started to be retracted, so that the workpiece body 134 which is cold-headed can be collected by workers through the first collecting pipe 93 and the second collecting pipe 94 under the action of the collecting pump 92, the device can automatically collect and improve the production efficiency, reduce manual errors, improve the working environment and facilitate subsequent treatment after punching, and further improve the efficiency and quality of punching and bring better production environment and economic benefits.

The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

1. The utility model provides a cold heading machine for fastener processing, includes base (1), its characterized in that, the upper end fixedly connected with of base (1) support column (2) that a plurality of positions correspond each other, a plurality of the upper end fixedly connected with of support column (2) same connecting plate (3), the upper end fixedly connected with operation panel (4) of base (1), gear motor (5) are installed to the outer wall of operation panel (4), the output fixedly connected with carousel (6) of gear motor (5), the outer wall fixedly connected with of operation panel (4) two supporting bench (7) that correspond each other in position, two feeding mechanism (8) and pan feeding mechanism (9) are installed respectively to the upper end of supporting bench (7), cold heading groove (10) that a plurality of positions correspond each other are seted up to the upper end outer wall of carousel (6), a plurality of fixed establishment (11) are all installed to the inner wall of cold heading groove (10), a plurality of first electric putter (12) are all installed to the inner wall of cold heading groove (10), a plurality of electric putter (12) are installed the outer wall (13) of buffer mechanism (13) are installed to the upper end (13).

2. A cold header for fastener processing according to claim 1, wherein the feeding mechanism (8) comprises a first fixing plate (81) fixedly connected to the upper end of one of the support tables (7), and a feeding groove (82) is mounted on the outer wall of the first fixing plate (81).

3. The cold header for fastener processing according to claim 1, wherein the feeding mechanism (9) comprises a second fixing plate (91) fixedly connected to the upper end of one of the supporting tables (7), an aggregate pump (92) is mounted at the upper end of the second fixing plate (91), the input end of the aggregate pump (92) is communicated with a first collecting pipe (93), and the output end of the aggregate pump (92) is communicated with a second collecting pipe (94).

4. The cold header for fastener processing according to claim 1, wherein the fixing mechanism (11) comprises a plurality of second electric push rods (111) fixedly connected to the inner wall of the cold header tank (10), the output ends of the second electric push rods (111) are fixedly connected with first limiting plates (112), the outer walls of the first limiting plates (112) are provided with through holes, guide rods (113) are slidably connected to the corresponding through holes, the outer walls of the guide rods (113) are fixedly connected with the same second limiting plate (114), a pressing switch (115) is installed on the outer wall of one of the first limiting plates (112), and a power transformation mechanism (15) is installed on the outer wall of the output end of the second electric push rod (111).

5. The cold header for fastener processing according to claim 1, wherein the buffer mechanism (13) comprises a third fixing plate (131) fixedly connected to an output end of the first electric push rod (12), a plurality of damping springs (132) corresponding to each other in position are installed on an outer wall of the third fixing plate (131), the upper ends of the damping springs (132) are fixedly connected with the same fourth fixing plate (133), the upper ends of the fourth fixing plate (133) are in abutting connection with a workpiece body (134), and a double-acting switch (135) is installed at the upper end of the fourth fixing plate (133).

6. The cold header for fastener processing according to claim 4, wherein the power transformation mechanism (15) comprises a supporting rod (151) fixedly connected to the outer wall of the output end of the second electric push rod (111), a conductive block (152) is fixedly connected to the outer wall of the supporting rod (151), a protective housing (153) is mounted on the inner wall of the cold header tank (10), and a resistor rod (154) matched with the conductive block (152) is fixedly connected to the inner wall of the protective housing (153).

7. The cold header for fastener machining according to claim 1, wherein the cold header mechanism (14) comprises a stamping cylinder (141) fixedly connected to the outer wall of the connecting plate (3), and the output end of the stamping cylinder (141) is fixedly connected with a cold header die (142).

8. A process for fastener processing, applied to a cold header for fastener processing according to any one of claims 1 to 6, characterized by comprising the steps of:

s1, preparing materials: selecting a proper workpiece body (134) for processing, wherein the workpiece body (134) which is commonly used is carbon steel, stainless steel and the like;

s2, cutting the material: cutting the workpiece body (134) into bars of appropriate length;

s3, finishing the steel wire: deoiling and deoxidizing the surface of the cut workpiece body (134) to ensure the quality of the machining process;

s4, steel wire feeding: the pre-kneaded workpiece body (134) is arranged in a feeding mechanism of the cold header for subsequent cold header operation;

s5, cold heading forming: the workpiece body (134) is extruded and deformed by the mechanical force of the cold header and the action of the die to form the workpiece into threads or other shapes, and axial force and rotational force are required to be applied simultaneously in the process.