CN114589254B - Fine blanking die for motor stator piece - Google Patents

Fine blanking die for motor stator piece Download PDF

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Publication number
CN114589254B
CN114589254B CN202111181730.2A CN202111181730A CN114589254B CN 114589254 B CN114589254 B CN 114589254B CN 202111181730 A CN202111181730 A CN 202111181730A CN 114589254 B CN114589254 B CN 114589254B
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China
Prior art keywords
die
guide rod
groove
oil
guide sleeve
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CN202111181730.2A
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CN114589254A (en
Inventor
叶浩平
楼亚晖
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Hengdian Group DMEGC Magnetics Co Ltd
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Hengdian Group DMEGC Magnetics Co Ltd
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Priority to CN202111181730.2A priority Critical patent/CN114589254B/en
Publication of CN114589254A publication Critical patent/CN114589254A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/10—Die sets; Pillar guides
    • B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/18—Lubricating, e.g. lubricating tool and workpiece simultaneously
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/30—Reducing waste in manufacturing processes; Calculations of released waste quantities

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)

Abstract

The invention discloses a fine blanking die for a motor stator piece, which comprises an upper die plate and a lower die plate, wherein an upper die base is arranged on the upper die plate, a lower die base is arranged on the lower die plate, a male die is arranged at the lower end of the upper die base, a female die insert is arranged on the lower die base, and a cavity corresponding to the male die is arranged on the female die insert; the oil-saving die is characterized in that an annular oil storage cavity used for storing lubricating oil is arranged in the second guide sleeve, and a plurality of oil outlet holes communicated with the annular oil storage cavity are formed in the inner side of the second guide sleeve. According to the invention, the annular oil cavity is arranged in the second guide sleeve, and lubricating oil can flow into a gap between the second guide rod and the second guide sleeve through the oil outlet, so that the second guide rod and the second guide sleeve are well lubricated, the abrasion between the second guide rod and the second guide sleeve is effectively reduced, and the quality of the stator piece is ensured.

Description

Fine blanking die for motor stator piece
Technical Field
The invention relates to the technical field of dies, in particular to a fine blanking die for a motor stator piece.
Background
The existing motor stator sheets are generally formed by stamping steel plates through stamping dies. The existing stamping die comprises an upper die plate and a lower die plate, wherein an upper die base is arranged on the upper die plate, a lower die base is arranged on the lower die plate, a male die is arranged at the lower end of the upper die base, a female die insert is arranged on the lower die base, and a cavity corresponding to the male die is arranged on the female die insert; the upper die base is provided with a guide rod, the lower die base is provided with a guide sleeve matched with the guide rod, and the guide rod is connected with the guide sleeve in a sliding manner; during stamping, a steel plate is placed between the male die and the cavity, and then the steel plate is stamped through downward movement of the male die; through the cooperation between guide bar and the uide bushing, the relative movement between upper die base and the die holder plays the guide effect, ensures the punching press precision.
The existing stamping die is used for a long time, due to the fact that effective lubrication is lacked between the guide rod and the guide sleeve, great abrasion can be generated between the guide rod and the guide sleeve, the gap between the guide rod and the guide sleeve is seriously increased, the guiding precision between the upper die base and the lower die base is reduced, the stamping precision is reduced, and the quality of stator pieces is affected.
Disclosure of Invention
The invention aims to solve the problems that in the long-time use process of an existing stamping die, due to the fact that effective lubrication is lacked between a guide rod and a guide sleeve, the guide rod and the guide sleeve are abraded greatly, the gap between the guide rod and the guide sleeve is increased seriously, the guiding precision between an upper die base and a lower die base is reduced, the stamping precision is reduced, and the quality of a stator piece is affected.
The purpose of the invention is realized by the following technical scheme: a fine blanking die for motor stator slices comprises an upper die plate and a lower die plate, wherein an upper die base is arranged on the upper die plate, a lower die base is arranged on the lower die plate, a male die is arranged at the lower end of the upper die base, a female die insert is arranged on the lower die base, and a cavity corresponding to the male die is arranged on the female die insert; the oil-saving die is characterized in that an annular oil storage cavity used for storing lubricating oil is arranged in the second guide sleeve, and a plurality of oil outlet holes communicated with the annular oil storage cavity are formed in the inner side of the second guide sleeve.
According to the invention, the annular oil cavity is arranged in the second guide sleeve, lubricating oil is stored in the annular oil cavity, the lubricating oil can flow into a gap between the second guide rod and the second guide sleeve through the oil outlet hole, and the lubricating oil is more uniformly coated on the side surface of the second guide rod through the movement of the second guide rod, so that the second guide rod and the second guide sleeve are well lubricated, the abrasion of the second guide rod and the second guide sleeve is effectively reduced, the problem of guide precision reduction caused by overlarge gap due to abrasion between the second guide rod and the second guide sleeve is avoided, and the quality of the stator piece is finally ensured.
Preferably, a pressure plate is connected below the upper die holder, a guide hole is formed in the pressure plate, and the second guide rod penetrates through the guide hole; a limiting bolt is also arranged between the pressing plate and the upper die base; a counter bore is formed in the pressure plate, a limiting bolt penetrates through the counter bore, and one end of the limiting bolt is fixedly connected with the upper die base; the pressure plate is also provided with a through groove which can lead the convex die to pass through. The pressing plate can move relative to the upper die base; when punching press, along with the decline of upper die base and terrace die above, the clamp plate can contact the steel sheet at first, pushes down the steel sheet earlier through the clamp plate, avoids the steel sheet to take place the skew in subsequent punching press in-process.
Preferably, the lower template is provided with a first guide rod, and the upper template is provided with a first guide sleeve matched with the first guide rod.
Preferably, after the male die extends into the cavity, the unilateral clearance between the male die and the inner wall of the cavity is 0.005mm.
Preferably, the lower end edge of the male die is provided with a chamfer with the radius of 0.2 mm. The lower end edge of the male die is provided with the chamfer, so that the lower end edge of the male die can be effectively prevented from being subjected to corner collapse during stamping.
Preferably, the surfaces of the male die insert and the female die insert are provided with PVD coating films. When the traditional stamping die is used, after a plate is stamped, the surfaces of a male die and a female die can be stuck, so that the problems of poor appearance and unstable precision of a product are caused; according to the invention, the PVD coating is arranged on the surfaces of the male die insert and the female die insert, so that the phenomenon of material sticking is effectively prevented, and the problems are effectively avoided.
Preferably, the punch is made of Caldie.
Preferably, the cavity insert is made of YG 8.
Preferably, two ends of the oil outlet hole are respectively provided with a conical pipe body, and a hose is arranged between the two conical pipe bodies; an annular groove is formed below the oil outlet hole, a follow-up ring is sleeved on the second guide rod and made of rubber, a plurality of protruding parts are arranged on the inner side of the follow-up ring and are in contact with the side face of the second guide rod; the follow-up ring is positioned in the annular groove; a threaded hole is vertically formed below the annular groove, an adjusting screw is connected in the threaded hole in a threaded manner, and the upper end of the adjusting screw extends into the annular groove; the top of follow-up ring is connected with the follow-up rod corresponding with the oil outlet, and the upper end of follow-up rod stretches into in the oil outlet, and the upper end of follow-up rod is connected with the hose clamp, is provided with first clamp groove, second clamp groove and third clamp groove on the hose clamp, and first clamp groove, second clamp groove and third clamp groove set gradually from up down, and the groove width in first clamp groove, second clamp groove and third clamp groove increases in proper order, and the hose clamp is in the both sides of hose. In the invention, when the die is stamped, the upper die holder and the second guide rod can descend and then ascend and reset, in the process, as the follow-up ring is sleeved on the second guide rod and certain friction force exists between the follow-up rod and the second guide rod, the second guide rod can drive the follow-up ring to the position of the middle lower end of the annular groove when the second guide rod moves downwards, and the second guide rod can drive the follow-up ring to the position of the upper end of the annular groove when the second guide rod ascends and resets; in the process, the follower ring drives the hose clamp to move synchronously through the follower rod. In the process that the second guide rod moves downwards, the follow-up ring is driven to the position of the middle lower end of the annular groove, the hose clamp is positioned at the position of the lowest end relative to the hose, and the hose clamp and the second clamp groove or the third clamp groove are in an opening and conducting state; when the second guide rod moves upwards and resets, the follow-up ring is driven to the upper end of the annular groove, the hose clamp is positioned at the uppermost end of the hose clamp relative to the hose, the hose is clamped in the first clamping groove, the hose is completely clamped due to the minimum groove width of the first clamping groove, the hose cannot be conducted, and in the state, lubricating oil cannot flow outwards, so that the supply of the lubricating oil is controlled, only when the die is used for stamping and the second guide rod moves downwards, a certain amount of lubricating oil can flow out to lubricate the space between the second guide rod and the second guide sleeve, and the space between the second guide rod and the second guide sleeve can be lubricated every stamping; and when the second guide rod moves upwards and resets or does not work, lubricating oil can not flow out, so that the waste of the lubricating oil is avoided. Because the groove widths of the second clamping groove and the third clamping groove are different, when the hoses are in the second clamping groove and the third clamping groove, the clamping degrees of the hoses are different, the opening sizes of the hoses are different, and meanwhile, the oil outlet amount of lubricating oil is different; the height of the follow-up ring can be adjusted by adjusting the height of the adjusting screw when the follow-up ring stays at the lower end of the annular groove, so that the position of the hose in the hose clamp can be determined when the second guide rod descends, and the hose can stay in the third clamping groove when a large oil output is required; when a small oil outlet amount is needed, the hose can stay in the second clamping groove, so that the function of adjusting the oil outlet amount is realized.
Preferably, the upper end of second uide bushing is provided with air vent and the oil filler point with annular oil storage chamber intercommunication, is connected with the rubber buffer on the oil filler point.
The invention has the beneficial effects that: in the invention, the annular oil cavity is arranged in the second guide sleeve, lubricating oil is stored in the annular oil cavity, and the lubricating oil can flow into a gap between the second guide rod and the second guide sleeve through the oil outlet hole, so that the second guide rod and the second guide sleeve are well lubricated, the abrasion of the second guide rod and the second guide sleeve is effectively reduced, the problem of guide precision reduction caused by overlarge gap due to abrasion between the second guide rod and the second guide sleeve is avoided, and the quality of the stator sheet is finally ensured.
Drawings
Fig. 1 is a cross-sectional view of the present invention.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Fig. 3 is an enlarged view of a portion B in fig. 2.
Fig. 4 is a structural schematic view of a hose clamp.
Fig. 5 is a schematic view of the structure of the follower ring.
In the figure: 1. the die comprises an upper die plate, 2, a lower die plate, 3, an upper die holder, 4, a lower die holder, 5, a male die, 6, a female die insert, 7, a first guide rod, 8, a first guide sleeve, 9, a pressing plate, 10, a limiting bolt, 11, a second guide rod, 12, a second guide sleeve, 13, an annular oil storage cavity, 14, an air vent, 15, a rubber plug, 16, an annular groove, 17, a follow-up ring, 18, a follow-up rod, 19, an adjusting screw, 20, an oil outlet, 21, a conical pipe body, 22, a hose, 23, a hose clamp, 24, a first clamping groove, 25, a second clamping groove, 26, a third clamping groove, 27 and a protruding part.
Detailed Description
The invention is further described by the following detailed description in conjunction with the accompanying drawings.
Example 1:
as shown in fig. 1 to 5, a fine blanking die for motor stator sheets comprises an upper die plate 1 and a lower die plate 2. An upper die holder 3 is arranged on the upper template 1, and a lower die holder 4 is arranged on the lower template 2. The lower end of the upper die holder 3 is fixedly provided with a male die 5, and the male die 5 is made of Caldie materials. The lower end edge of the male die 5 is provided with a chamfer with the radius of 0.2 mm. And a female die insert 6 is arranged on the lower die holder 4, and the female die insert 6 is made of YG8 materials. The die insert 6 is provided with a cavity corresponding to the male die 5. PVD coating films are arranged on the surfaces of the male die insert and the female die insert. After the male die 5 extends into the cavity, the unilateral clearance between the male die and the inner wall of the cavity is 0.005mm. The lower template 2 is provided with a first guide rod 7, and the upper template 1 is provided with a first guide sleeve 8 matched with the first guide rod 7. The upper die base 3 is provided with a second guide rod 11, and the lower die base 4 is provided with a second guide sleeve 12 matched with the second guide rod 11. An annular oil storage cavity 13 for storing lubricating oil is arranged in the second guide sleeve 12, and a plurality of oil outlet holes 20 communicated with the annular oil storage cavity 13 are formed in the inner side of the second guide sleeve 12. The upper end of the second guide sleeve 12 is provided with a vent hole 14 and an oil filling hole which are communicated with the annular oil storage cavity, and the oil filling hole is connected with a rubber plug 15. A pressing plate 9 is connected below the upper die base, a guide hole is formed in the pressing plate 9, and a second guide rod 11 penetrates through the guide hole. A limit bolt 10 is also arranged between the pressure plate 9 and the upper die base 3. A counter bore is formed in the pressing plate 9, a limiting bolt 10 penetrates through the counter bore, and one end of the limiting bolt 10 is fixedly connected with the upper die base 3. The pressure plate 9 is also provided with a through groove for the punch to pass through.
Two ends in the oil outlet hole 20 are respectively provided with a conical pipe body 21, and a hose 22 is arranged between the two conical pipe bodies 21. An annular groove 16 is arranged below the oil outlet hole 20. The second guide rod 11 is sleeved with a follower ring 17, the follower ring 17 is made of rubber, a plurality of protrusions 27 are arranged on the inner side of the follower ring 17, and the protrusions 27 are in contact with the side face of the second guide rod 11. A follower ring 17 is located in the annular groove 16. A threaded hole is vertically formed below the annular groove 16, an adjusting screw 19 is connected in the threaded hole in a threaded manner, and the upper end of the adjusting screw 19 extends into the annular groove 16. A follower rod 18 corresponding to the oil outlet is connected above the follower ring 17, and the upper end of the follower rod 18 extends into the oil outlet 20. The upper end of the follower rod 18 is connected with a hose clamp 23, the hose clamp 23 is provided with a first clamping groove 24, a second clamping groove 25 and a third clamping groove 26, the first clamping groove 24, the second clamping groove 25 and the third clamping groove 26 are sequentially arranged from bottom to top, and the groove widths of the first clamping groove 24, the second clamping groove 25 and the third clamping groove 26 are sequentially increased. Hose clamps 23 are clamped to both sides of the hose 22.
According to the invention, the annular oil cavity is arranged in the second guide sleeve, lubricating oil is stored in the annular oil cavity, the lubricating oil can flow into a gap between the second guide rod and the second guide sleeve through the oil outlet hole, and the lubricating oil is uniformly coated on the side surface of the second guide rod through the movement of the second guide rod, so that the second guide rod and the second guide sleeve are well lubricated, the abrasion of the second guide rod and the second guide sleeve is effectively reduced, the problem of reduction of the guide precision caused by overlarge gap due to the abrasion between the second guide rod and the second guide sleeve is avoided, and the quality of the stator piece is finally ensured.
In the invention, when the die is stamped, the upper die holder and the second guide rod can descend, ascend and reset firstly, in the process, the follow-up ring is sleeved on the second guide rod, and certain friction force exists between the follow-up ring and the second guide rod, so that when the second guide rod moves downwards, the second guide rod can drive the follow-up ring to the position of the middle lower end of the annular groove, and when the second guide rod ascends and resets, the second guide rod can drive the follow-up ring to the position of the upper end of the annular groove; in the process, the follower ring drives the hose clamp to move synchronously through the follower rod. In the process that the second guide rod moves downwards, the follow-up ring is driven to the middle-lower end position of the annular groove at the moment, the hose clamp is also positioned at the lowest end position relative to the hose, and at the moment, the hose clamp and the second clamp groove or the third clamp groove are in an opening and conducting state, and under the state, lubricating oil can enter the hose and flow into a gap between the second guide rod and the second guide sleeve to lubricate the second guide rod and the second guide sleeve; when the second guide rod moves upwards and resets, the follow-up ring is driven to the upper end of the annular groove, the hose clamp is positioned at the uppermost end of the hose clamp relative to the hose, the hose is clamped in the first clamping groove, the hose is completely clamped due to the minimum groove width of the first clamping groove, the hose cannot be conducted, and in the state, lubricating oil cannot flow outwards, so that the supply of the lubricating oil is controlled, only when the die is used for stamping and the second guide rod moves downwards, a certain amount of lubricating oil can flow out to lubricate the space between the second guide rod and the second guide sleeve, and the space between the second guide rod and the second guide sleeve can be lubricated every stamping; and when the second guide rod moves upwards and resets or does not work, lubricating oil can not flow out, so that the waste of the lubricating oil is avoided. Because the groove widths of the second clamping groove and the third clamping groove are different, when the hose is in the second clamping groove and the hose is in the third clamping groove, the clamping degree of the hose is different, the opening size of the hose is also different, and meanwhile, the oil outlet amount of the lubricating oil is also different; through adjusting screw's height to can adjust the position height that the follow-up ring stopped when the ring channel lower extreme, and then can decide the position of second guide bar hose in the hose clamp when descending, obtain great oil output when needs, can make the hose stop in the third presss from both sides the groove, when the less oil output of needs, can make the hose stop in the second presss from both sides the groove, thereby realized adjusting the function of oil output.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims (9)

1. A fine blanking die for a motor stator piece is characterized by comprising an upper die plate and a lower die plate, wherein an upper die base is arranged on the upper die plate, a lower die base is arranged on the lower die plate, a male die is arranged at the lower end of the upper die base, a female die insert is arranged on the lower die base, and a cavity corresponding to the male die is arranged on the female die insert; the oil-saving lubricating device is characterized in that an annular oil storage cavity for storing lubricating oil is arranged in the second guide sleeve, and a plurality of oil outlet holes communicated with the annular oil storage cavity are formed in the inner side of the second guide sleeve; two ends of the oil outlet hole are respectively provided with a conical pipe body, and a hose is arranged between the two conical pipe bodies; an annular groove is formed below the oil outlet hole, a follow-up ring is sleeved on the second guide rod and made of rubber, a plurality of protruding parts are arranged on the inner side of the follow-up ring and are in contact with the side face of the second guide rod; the follow-up ring is positioned in the annular groove; a threaded hole is vertically formed below the annular groove, an adjusting screw is connected in the threaded hole in a threaded manner, and the upper end of the adjusting screw extends into the annular groove; the top of follow-up ring is connected with the follow-up rod corresponding with the oil outlet, and the upper end of follow-up rod stretches into in the oil outlet, and the upper end of follow-up rod is connected with the hose clamp, is provided with first clamp groove, second clamp groove and third clamp groove on the hose clamp, and first clamp groove, second clamp groove and third clamp groove set gradually from up down, and the groove width in first clamp groove, second clamp groove and third clamp groove increases in proper order, and the hose clamp is in the both sides of hose.
2. The fine blanking die for the motor stator piece as claimed in claim 1, wherein a pressing plate is connected to a lower portion of the upper die base, a guide hole is formed in the pressing plate, and the second guide rod penetrates through the guide hole; a limit bolt is also arranged between the pressure plate and the upper die base; a counter bore is formed in the pressure plate, a limiting bolt penetrates through the counter bore, and one end of the limiting bolt is fixedly connected with the upper die base; the pressure plate is also provided with a through groove which can lead the convex die to pass through.
3. The fine blanking die for the motor stator slice as claimed in claim 1, wherein the lower die plate is provided with a first guide rod, and the upper die plate is provided with a first guide sleeve matched with the first guide rod.
4. The fine blanking die for the stator piece of the motor as claimed in claim 1, wherein the unilateral clearance between the male die and the inner wall of the cavity is 0.005mm after the male die extends into the cavity.
5. The fine blanking die for the stator piece of the motor as claimed in claim 1, wherein the lower end edge of the male die is provided with a chamfer, and the radius of the chamfer is 0.2 mm.
6. The fine blanking die for the motor stator slice as claimed in claim 1, wherein the surfaces of the male die insert and the female die insert are provided with PVD coatings.
7. The fine blanking die for the stator sheets of the motor as claimed in claim 1, wherein the male die is made of Caldie.
8. The fine blanking die for the motor stator plate according to claim 1, wherein the cavity insert is made of YG 8.
9. The fine blanking die for the stator piece of the motor as claimed in claim 1, 2, 3, 4, 5, 6, 7 or 8, wherein the upper end of the second guide sleeve is provided with a vent hole and an oil injection hole which are communicated with the annular oil storage cavity, and a rubber plug is connected to the oil injection hole.
CN202111181730.2A 2021-10-11 2021-10-11 Fine blanking die for motor stator piece Active CN114589254B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111181730.2A CN114589254B (en) 2021-10-11 2021-10-11 Fine blanking die for motor stator piece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111181730.2A CN114589254B (en) 2021-10-11 2021-10-11 Fine blanking die for motor stator piece

Publications (2)

Publication Number Publication Date
CN114589254A CN114589254A (en) 2022-06-07
CN114589254B true CN114589254B (en) 2022-12-23

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06344055A (en) * 1993-06-03 1994-12-20 Tsubota Tekunika:Kk Oil feeder for turret punch press
CN208513513U (en) * 2018-07-04 2019-02-19 深圳市金永鑫精密五金制品有限公司 A kind of hardware stamping riveted precision die
CN208976666U (en) * 2018-09-29 2019-06-14 东莞市钢锐精密五金有限公司 A kind of self-lubricating guide post guide sleeve system
CN210208335U (en) * 2019-06-27 2020-03-31 杭州职业技术学院 Mechanical die with automatic oiling station of guide pillar
CN210497830U (en) * 2019-06-26 2020-05-12 简燕 Lubricating device for guide column of punching machine
CN211386542U (en) * 2019-09-09 2020-09-01 江苏泽恩汽机车部品制造有限公司 Metal stamping die

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06344055A (en) * 1993-06-03 1994-12-20 Tsubota Tekunika:Kk Oil feeder for turret punch press
CN208513513U (en) * 2018-07-04 2019-02-19 深圳市金永鑫精密五金制品有限公司 A kind of hardware stamping riveted precision die
CN208976666U (en) * 2018-09-29 2019-06-14 东莞市钢锐精密五金有限公司 A kind of self-lubricating guide post guide sleeve system
CN210497830U (en) * 2019-06-26 2020-05-12 简燕 Lubricating device for guide column of punching machine
CN210208335U (en) * 2019-06-27 2020-03-31 杭州职业技术学院 Mechanical die with automatic oiling station of guide pillar
CN211386542U (en) * 2019-09-09 2020-09-01 江苏泽恩汽机车部品制造有限公司 Metal stamping die

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Application publication date: 20220607

Assignee: ZHEJIANG DONGYANG DONGCI CHENGJI ELECTRONIC Co.,Ltd.

Assignor: HENGDIAN GROUP DMEGC MAGNETICS Co.,Ltd.

Contract record no.: X2023330000513

Denomination of invention: A precision punching mold for motor stator pieces

Granted publication date: 20221223

License type: Common License

Record date: 20230815