CN111251008A - Production equipment and production process for contact pin with chamfer - Google Patents

Production equipment and production process for contact pin with chamfer Download PDF

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Publication number
CN111251008A
CN111251008A CN202010165757.1A CN202010165757A CN111251008A CN 111251008 A CN111251008 A CN 111251008A CN 202010165757 A CN202010165757 A CN 202010165757A CN 111251008 A CN111251008 A CN 111251008A
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CN
China
Prior art keywords
chamfer
bar
chamfering
contact pin
conveying mechanism
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Pending
Application number
CN202010165757.1A
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Chinese (zh)
Inventor
尧章华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongguan Qunhua Precision Hardware Co ltd
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Dongguan Qunhua Precision Hardware Co ltd
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Priority to CN202010165757.1A priority Critical patent/CN111251008A/en
Publication of CN111251008A publication Critical patent/CN111251008A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P23/00Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
    • B23P23/06Metal-working plant comprising a number of associated machines or apparatus

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Abstract

The invention relates to the technical field of pin manufacturing, and particularly discloses production equipment with a chamfer pin and a production process, wherein the production equipment comprises a machine table, a conveying mechanism, a forming mechanism, a chamfer mechanism and a cutting mechanism, wherein the conveying mechanism is arranged on the machine table and is used for driving an external bar to move; the forming mechanism comprises a female die and a male die which are relatively close to or far away from each other, and the female die and the male die are matched on the bar material conveyed by the conveying mechanism to form a bent part; the chamfering mechanism performs chamfering processing on the bar processed by the forming mechanism, so that a chamfering part is formed on the bar; the cutting mechanism cuts off the bar stock at the chamfer part processed by the chamfer mechanism to form a contact pin with a chamfer; conveying mechanism realizes the automatic of bar and carries, and forming mechanism realizes the automatic molding of bar, and the automatic chamfer of bar is realized to the chamfering mechanism, and the shutdown mechanism realizes the automatic cutout of bar, realizes taking the automated production of chamfer contact pin to make, promotes the production manufacturing efficiency who takes the chamfer contact pin.

Description

Production equipment and production process for contact pin with chamfer
Technical Field
The invention relates to the technical field of pin manufacturing, and particularly discloses production equipment and a production process for a pin with a chamfer angle.
Background
In the manufacturing process of the contact pin, on one hand, the contact pin needs to be bent, and on the other hand, the contact pin needs to be chamfered.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide production equipment with the chamfered contact pin, so that the automatic production and manufacturing of the chamfered contact pin are realized, and the production and manufacturing efficiency of the chamfered contact pin is improved.
In order to achieve the purpose, the production equipment with the chamfering contact pin comprises a machine table, a conveying mechanism, a forming mechanism, a chamfering mechanism and a cutting mechanism, wherein the conveying mechanism, the forming mechanism, the chamfering mechanism and the cutting mechanism are arranged on the machine table; the forming mechanism comprises a female die and a male die which are relatively close to or far away from each other, and the female die and the male die are matched on the bar material conveyed by the conveying mechanism to form a bent part; the chamfering mechanism performs chamfering processing on the bar processed by the forming mechanism, so that a chamfering part is formed on the bar; the cutting mechanism cuts off the bar stock at the chamfer part processed by the chamfer mechanism to form a contact pin with a chamfer.
Further, the forming mechanism comprises two cam mechanisms and a first driving piece used for driving the two cam mechanisms to rotate, the female die and the male die are arranged in a collinear mode, the female die and the male die are arranged in a sliding mode relative to the machine table, the two cam mechanisms drive the female die and the male die to be close to each other or to be away from each other, and the bar conveyed by the conveying mechanism is located between the female die and the male die.
Further, chamfering mechanism includes the chamfer head that relative board slides and sets up, is used for driving the second driving piece that chamfer head removed, and the both sides that the free end of chamfer head kept away from each other all are equipped with the chamfer inclined plane, and second driving piece drive chamfer head makes chamfer inclined plane effect form chamfer portion on the bar, and chamfer portion is the V type, and shutdown mechanism is used in the crossing of chamfer portion and cuts off the bar.
Further, the number of chamfering head is two, and two chamfering head collineations set up, and two chamfering head of second driving piece drive are close to each other or are kept away from each other, and the bar is located between two chamfering head.
Further, shutdown mechanism includes the cutter that sets up, the third driving piece that is used for driving the cutter removal that slides relative board, and the free end of cutter acts on chamfer portion and cuts off the bar.
Further, the number of the cutting knives is two, the two cutting knives are arranged in a collinear manner, the third driving piece drives the two cutting knives to be close to or far away from each other, and the bar stock is located between the two cutting knives.
Further, the board is equipped with the guide spare, and the guide spare is equipped with the perforation that runs through the material pouring spare, and the bar that conveying mechanism carried removes along the perforation, and conveying mechanism, forming mechanism, chamfer mechanism, shutdown mechanism set up around the perforation.
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide a production process of a pin with a chamfer, simplify and reasonably optimize the production and manufacturing process of the pin with the chamfer, realize the automatic production and manufacturing of the pin with the chamfer and improve the production and manufacturing efficiency of the pin with the chamfer.
In order to achieve the purpose, the production process of the contact pin with the chamfer comprises the following steps:
step A, preparing strip bars;
step B, a conveying mechanism is configured, and the conveying mechanism drives the strip-shaped bar materials to move;
step C, configuring a forming mechanism, wherein the forming mechanism comprises a female die and a male die which are matched with each other, and the female die and the male die are matched with each other to form a bent part on the bar conveyed by the conveying mechanism;
step D, configuring a chamfering mechanism, and chamfering the bar processed by the forming mechanism by the chamfering mechanism to form a chamfering part on the bar;
and E, configuring a cutting mechanism, wherein the cutting mechanism acts on the chamfer part processed by the chamfer mechanism and cuts the bar stock to form a contact pin with a chamfer.
Further, chamfering mechanism is including being close to each other or two chamfer heads of keeping away from each other, and two chamfer head collineations set up, and the bar is located between two chamfer heads, and the both sides that the free end of chamfer head kept away from each other all are equipped with the chamfer inclined plane, and the chamfer head of removal makes chamfer inclined plane act on and form chamfer portion on the bar, and chamfer portion is the V type, and the cutting mechanism effect cuts off the bar at the intersection of chamfer portion.
Further, the cutting mechanism comprises two cutting knives close to each other or far away from each other, the bar stock is positioned between the two cutting knives, and one ends of the two cutting knives close to each other act on the bar stock to cut off the bar stock.
Has the advantages that: when the production manufacturing with the chamfer contact pin is needed, the conveying mechanism achieves automatic conveying of the bar, the forming mechanism achieves automatic forming of the bar, the chamfering mechanism achieves automatic chamfering of the bar, the cutting mechanism achieves automatic cutting of the bar, the production manufacturing process with the chamfer contact pin is simplified and reasonably optimized, automatic production manufacturing with the chamfer contact pin is achieved, and production manufacturing efficiency with the chamfer contact pin is improved.
Drawings
FIG. 1 is a schematic diagram of a manufacturing apparatus with chamfered pins according to the present invention.
FIG. 2 is a schematic view of another embodiment of the manufacturing apparatus with chamfered pins of the present invention.
Fig. 3 is a block diagram of a pin of the present invention.
FIG. 4 is a block diagram of a manufacturing process for a chamfered pin according to the present invention.
The reference numerals include:
1-machine table 2-conveying mechanism 3-forming mechanism
4-chamfering mechanism 5-cutting mechanism 6-female die
7-punch 8-cam mechanism 9-chamfering head
11-cutter 12-perforation 111-insertion needle
112-a bending part.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
Referring to fig. 1-3, the production equipment with the chamfer contact pin comprises a machine table 1, and a conveying mechanism 2, a forming mechanism 3, a chamfer mechanism 4 and a cutting mechanism 5 which are arranged on the machine table 1, wherein the conveying mechanism 2 is used for driving external bars to move, the bars are in a straight strip shape, and the conveying mechanism 2 drives the bars to automatically move; the forming mechanism 3 comprises a female die 6 and a male die 7 which are relatively close to or far away from each other, the female die 6 and the male die 7 are mutually matched so as to form a bent part 112 on the bar stock conveyed by the conveying mechanism 2, the bent part 112 is approximately V-shaped, and the bent part 112 can be C-shaped, U-shaped, W-shaped or the like; the chamfering mechanism 4 performs chamfering processing on the bar stock processed by the forming mechanism 3, so that a chamfer part is formed on the bar stock, and a bending part 112 is arranged between every two adjacent chamfer parts along the length direction of the bar stock; the cutting mechanism 5 cuts the bar material at the chamfered portion processed by the chamfering mechanism 4 to form a chamfered pin 111. A chamfered pin 111 has a bent portion 112, and both ends of a chamfered pin 111 have chamfered portions, and the bent portion 112 is located between the chamfered portions of both ends of the chamfered pin 111.
When needing to produce and manufacturing take chamfer contact pin 111, conveying mechanism 2 realizes the automatic conveying of bar, and forming mechanism 3 realizes the automatic molding of bar, and chamfer mechanism 4 realizes the automatic chamfer of bar, and shutdown mechanism 5 realizes the automatic cutout of bar, realizes taking the automated production of chamfer contact pin 111 to make, promotes the production manufacturing efficiency who takes chamfer contact pin 111.
Forming mechanism 3 includes two cam mechanism 8, is used for driving two cam mechanism 8 pivoted first driving pieces, and die 6, terrace die 7 collineation set up, and die 6, terrace die 7 slide the setting relatively board 1, and two cam mechanism 8 drive die 6 and terrace die 7 are close to each other or keep away from each other, and cam mechanism 8 is prior art, no longer gives details here. The bar stock conveyed by the conveying mechanism 2 is positioned between the female die 6 and the male die 7.
The female die 6 is provided with a groove, the male die 7 is provided with a protrusion for extending into the groove, the bar conveyed by the conveying mechanism 2 is positioned on the groove, when the female die 6 is close to the male die 7, the protrusion presses a part of the bar into the groove, so that the automatic forming processing of the bar is realized, and the bent part 112 is formed by the part of the bar pressed into the groove. In actual use, the first driving piece drives the two cam mechanisms 8 to synchronously rotate, so that the female die 6 and the male die 7 are ensured to be synchronously close to or synchronously far away from each other, and the forming efficiency of the bending part 112 is improved.
Chamfering mechanism 4 includes chamfering head 9, the second driving piece that is used for driving chamfering head 9 to remove that slides the setting relative board 1, of course, the second driving piece can make a round trip to slide relative board 1 via cam mechanism 8 drive chamfering head 9, and the left and right sides that the free end of chamfering head 9 kept away from each other all is equipped with the chamfer inclined plane. During the in-service use, second driving piece drive chamfer head 9 removes and makes chamfer inclined plane conflict to act on forming chamfer portion on the bar, and chamfer portion is the V type, and shutdown mechanism 5 is used in the crossing department at chamfer portion and cuts off the bar, so, the chamfer inclined plane of chamfer head 9 both sides makes the one side that is close to each other by the bar after cutting off all by the chamfer processing.
The number of the chamfer heads 9 is two, the two chamfer heads 9 are arranged in a line, the second driving piece drives the two chamfer heads 9 to approach or move away from each other, and preferably, the second driving piece drives the two chamfer heads 9 to approach or move away from each other synchronously. The bar is located between two chamfer heads 9, and two chamfer heads 9 make both ends of contact pin 111 with the one end all chamfered, promote contact pin 111's chamfer efficiency. The two chamfering heads 9 are respectively acted on two sides of the bar material far away from each other, the two chamfering heads 9 enable the two sides of the bar material to be stressed approximately evenly, and chamfering yield of the contact pin 111 is improved.
The cutting mechanism 5 comprises a cutter 11 arranged in a sliding manner relative to the machine table 1 and a third driving member for driving the cutter 11 to move, of course, the third driving member can drive the cutter 11 to slide back and forth relative to the machine table 1 through a cam mechanism 8, and the free end of the cutter 11 acts on the intersection of the chamfered parts to cut off the bar stock.
The third driving piece drives the cutter 11 to move, so that the free end of the cutter 11 is abutted to the intersection of the chamfer parts, and the bar stock can be automatically cut off along with the continuous movement of the cutter 11. Utilize cutter 11 to be used in chamfer department, compare in cutter 11 and be used in the position that the bar is not chamfered, promote the cutting efficiency of bar, reduce cutter 11's wearing and tearing, extension cutter 11's life.
The number of the cutting knives 11 is two, the two cutting knives 11 are arranged in a collinear way, the third driving part drives the two cutting knives 11 to be close to or far away from each other, preferably, the third driving part drives the two cutting knives 11 to be close to or far away from each other synchronously, and the bar stock is positioned between the two cutting knives 11. The two cutters 11 are respectively used on two sides of the bar material far away from each other, so that the bar material is stressed evenly, and the cutting yield of the bar material is improved.
The machine table 1 is provided with a material guiding part, the material guiding part is provided with a through hole 12 penetrating through the material pouring part, a bar material conveyed by the conveying mechanism 2 moves along the through hole 12, and the conveying mechanism 2, the forming mechanism 3, the chamfering mechanism 4 and the cutting mechanism 5 are arranged around the through hole 12. Preferably, the material guiding member is substantially disc-shaped, and the conveying mechanism 2, the forming mechanism 3, the chamfering mechanism 4 and the cutting mechanism 5 are annularly arranged around the central axis of the perforation 12.
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide a production process of a pin with a chamfer, simplify and reasonably optimize the production and manufacturing process of the pin 111 with the chamfer, realize the automatic production and manufacturing of the pin 111 with the chamfer and improve the production and manufacturing efficiency of the pin 111 with the chamfer.
Referring to fig. 1-4, in order to achieve the above object, a manufacturing process of a chamfered contact pin according to the present invention includes the following steps:
step A, configuring a strip-shaped bar stock, wherein the bar stock is approximately a straight strip-shaped cylinder;
step B, a conveying mechanism 2 is configured, the conveying mechanism 2 drives the strip-shaped bar stock to automatically move, the conveying mechanism 2 comprises two driving units, each driving unit comprises two rotating wheels which are rotatably arranged, the two rotating wheels are arranged in a coplanar manner, the bar stock is clamped between the two rotating wheels, and the rotating wheels can drive the bar stock to move; preferably, the rotating wheel is provided with an annular blind groove for accommodating the bar stock, and the annular blind groove is arranged around the rotating axis of the rotating wheel;
step C, configuring a forming mechanism 3, wherein the forming mechanism 3 comprises a female die 6 and a male die 7 which are matched with each other, the female die 6 and the male die 7 are matched with each other to form a bent part 112 on the bar conveyed by the conveying mechanism 2, the female die 6 is provided with a groove, the male die 7 is provided with a protrusion extending into the groove, the bar is positioned between the female die 6 and the male die 7, and the protrusion presses a part of the bar into the groove to form the bent part 112;
step D, configuring a chamfering mechanism 4, and chamfering the bar processed by the forming mechanism 3 by the chamfering mechanism 4 to form a chamfering part on the bar;
and E, configuring a cutting mechanism 5, wherein the cutting mechanism 5 acts on the chamfer part processed by the chamfer mechanism 4, and cuts the bar stock to form a chamfered contact pin 111.
Chamfering mechanism 4 includes two chamfer heads 9 that are close to each other or keep away from each other, and chamfer head 9 slides relative board 1 and sets up, and two chamfer heads 9 collineations set up, and the bar is located between two chamfer heads 9. Two chamfer heads 9 conflict the both sides of bar respectively, and two chamfer heads 9 make bar both sides atress roughly balanced, promote the chamfer yield of contact pin 111.
The both sides that the free end of chamfer head 9 kept away from each other all are equipped with the chamfer inclined plane, and the chamfer head 9 of removal makes the chamfer inclined plane act on and forms chamfer portion on the bar, and chamfer portion is the V type, and shutdown mechanism 5 is used in the intersection of chamfer portion and cuts off the bar. The two chamfering heads 9 enable two ends of the same end of the pin 111 to be chamfered, and chamfering efficiency of the pin 111 is improved.
The cutting mechanism 5 comprises two cutters 11 which are close to or far away from each other, the cutters 11 are arranged in a sliding mode relative to the machine table 1, the two cutters 11 are arranged in a collinear mode, the bar is located between the two cutters 11, one ends, close to each other, of the two cutters 11 abut against each other and act on the bar, and the bar is cut off to form a chamfering inserting needle 111. The two cutters 11 are respectively used on two sides of the bar material far away from each other, so that the bar material is stressed evenly, and the cutting yield of the bar material is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention.

Claims (10)

1. The utility model provides a take production facility of chamfer contact pin which characterized in that: the device comprises a machine table, a conveying mechanism, a forming mechanism, a chamfering mechanism and a cutting mechanism, wherein the conveying mechanism, the forming mechanism, the chamfering mechanism and the cutting mechanism are arranged on the machine table; the forming mechanism comprises a female die and a male die which are relatively close to or far away from each other, and the female die and the male die are matched on the bar material conveyed by the conveying mechanism to form a bent part; the chamfering mechanism performs chamfering processing on the bar processed by the forming mechanism, so that a chamfering part is formed on the bar; the cutting mechanism cuts off the bar stock at the chamfer part processed by the chamfer mechanism to form a contact pin with a chamfer.
2. The apparatus for producing chamfered pins as defined in claim 1, wherein: the forming mechanism comprises two cam mechanisms and a first driving piece used for driving the two cam mechanisms to rotate, the female die and the male die are arranged in a collinear mode, the female die and the male die are arranged in a sliding mode relative to the machine platform, the two cam mechanisms drive the female die and the male die to be close to each other or to be away from each other, and the bar materials conveyed by the conveying mechanism are located between the female die and the male die.
3. The apparatus for producing chamfered pins as defined in claim 1, wherein: chamfering mechanism includes the chamfer head that relative board slides and sets up, is used for driving the second driving piece that the chamfer head removed, and the both sides that the free end of chamfer head kept away from each other all are equipped with the chamfer inclined plane, and second driving piece drive chamfer head makes chamfer inclined plane effect form chamfer portion on the bar, and chamfer portion is the V type, and shutdown mechanism is used in the crossing of chamfer portion and cuts off the bar.
4. The apparatus for producing chamfered pins as claimed in claim 3, wherein: the number of chamfer head is two, and two chamfer head collineations set up, and two chamfer heads of second driving piece drive are close to each other or are kept away from each other, and the bar is located between two chamfer heads.
5. The apparatus for producing chamfered pins as defined in claim 1, wherein: the cutting mechanism comprises a cutter and a third driving piece, wherein the cutter is arranged in a sliding mode relative to the machine table, the third driving piece is used for driving the cutter to move, and the free end of the cutter acts on the chamfering portion to cut off the bar.
6. The apparatus for producing chamfered pins as defined in claim 5, wherein: the number of cutters is two, and two cutters collineatly set up, and the third driving piece drives two cutters and is close to each other or keeps away from each other, and the bar is located between two cutters.
7. The apparatus for producing chamfered pins as defined in claim 1, wherein: the board is equipped with the guide spare, and the guide spare is equipped with the perforation that runs through the material of falling, and the bar that conveying mechanism carried removes along the perforation, and conveying mechanism, forming mechanism, chamfer mechanism, shutdown mechanism set up around the perforation.
8. A production process of a contact pin with a chamfer angle is characterized by comprising the following steps:
step A, preparing strip bars;
step B, a conveying mechanism is configured, and the conveying mechanism drives the strip-shaped bar materials to move;
step C, configuring a forming mechanism, wherein the forming mechanism comprises a female die and a male die which are matched with each other, and the female die and the male die are matched with each other to form a bent part on the bar conveyed by the conveying mechanism;
step D, configuring a chamfering mechanism, and chamfering the bar processed by the forming mechanism by the chamfering mechanism to form a chamfering part on the bar;
and E, configuring a cutting mechanism, wherein the cutting mechanism acts on the chamfer part processed by the chamfer mechanism and cuts the bar stock to form a contact pin with a chamfer.
9. The process for producing a chamfered pin according to claim 8, wherein: the chamfering mechanism comprises two chamfering heads which are close to or far away from each other, the two chamfering heads are arranged in a collinear mode, the bar is located between the two chamfering heads, the two sides, away from each other, of the free ends of the chamfering heads are provided with chamfering inclined planes, the chamfering heads moving enable the chamfering inclined planes to act on the bar to form chamfering portions, the chamfering portions are V-shaped, and the cutting mechanism acts on the intersection of the chamfering portions to cut off the bar.
10. The process for producing a chamfered pin according to claim 8, wherein: the cutting mechanism comprises two cutters which are close to or far away from each other, the bar is positioned between the two cutters, and one ends of the two cutters, which are close to each other, act on the bar to cut the bar.
CN202010165757.1A 2020-03-11 2020-03-11 Production equipment and production process for contact pin with chamfer Pending CN111251008A (en)

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CN202010165757.1A CN111251008A (en) 2020-03-11 2020-03-11 Production equipment and production process for contact pin with chamfer

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Application Number Priority Date Filing Date Title
CN202010165757.1A CN111251008A (en) 2020-03-11 2020-03-11 Production equipment and production process for contact pin with chamfer

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115401413A (en) * 2022-08-25 2022-11-29 慈溪市博恒汽车零部件有限公司 Contact pin chamfering production method

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CN204486673U (en) * 2015-02-10 2015-07-22 东莞市佳品五金制品有限公司 One turns line formed spring device
CN108145033A (en) * 2018-01-24 2018-06-12 苏州盛意德五金科技有限公司 U-shaped line numerical control machine and processing method
CN108188419A (en) * 2017-12-04 2018-06-22 沈阳兴华航空电器有限责任公司 For the cutoff tool of electric connector contact pin reversing processing and reversing processing method
CN110369649A (en) * 2019-08-22 2019-10-25 苏州兆能精密弹簧五金有限公司 A kind of the automatic forming equipment and its forming method of stainless steel bending spring
CN110369648A (en) * 2019-08-22 2019-10-25 苏州兆能精密弹簧五金有限公司 A kind of the automatic forming equipment and its forming method of miniature torsion spring
CN110369650A (en) * 2019-08-22 2019-10-25 苏州兆能精密弹簧五金有限公司 The automatic forming equipment and its forming method of extruding bending spring with chamfering
CN110773679A (en) * 2019-09-29 2020-02-11 福建永动力弹簧科技有限公司 Spring coiling machine for manufacturing metal spring and using method thereof
CN212122358U (en) * 2020-03-11 2020-12-11 东莞市群桦精密五金有限公司 Production equipment with chamfering contact pin

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204486673U (en) * 2015-02-10 2015-07-22 东莞市佳品五金制品有限公司 One turns line formed spring device
CN108188419A (en) * 2017-12-04 2018-06-22 沈阳兴华航空电器有限责任公司 For the cutoff tool of electric connector contact pin reversing processing and reversing processing method
CN108145033A (en) * 2018-01-24 2018-06-12 苏州盛意德五金科技有限公司 U-shaped line numerical control machine and processing method
CN110369649A (en) * 2019-08-22 2019-10-25 苏州兆能精密弹簧五金有限公司 A kind of the automatic forming equipment and its forming method of stainless steel bending spring
CN110369648A (en) * 2019-08-22 2019-10-25 苏州兆能精密弹簧五金有限公司 A kind of the automatic forming equipment and its forming method of miniature torsion spring
CN110369650A (en) * 2019-08-22 2019-10-25 苏州兆能精密弹簧五金有限公司 The automatic forming equipment and its forming method of extruding bending spring with chamfering
CN110773679A (en) * 2019-09-29 2020-02-11 福建永动力弹簧科技有限公司 Spring coiling machine for manufacturing metal spring and using method thereof
CN212122358U (en) * 2020-03-11 2020-12-11 东莞市群桦精密五金有限公司 Production equipment with chamfering contact pin

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115401413A (en) * 2022-08-25 2022-11-29 慈溪市博恒汽车零部件有限公司 Contact pin chamfering production method

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