CN107413912A - A kind of method for internal tooth lock washer punching press - Google Patents
A kind of method for internal tooth lock washer punching press Download PDFInfo
- Publication number
- CN107413912A CN107413912A CN201710711843.6A CN201710711843A CN107413912A CN 107413912 A CN107413912 A CN 107413912A CN 201710711843 A CN201710711843 A CN 201710711843A CN 107413912 A CN107413912 A CN 107413912A
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- China
- Prior art keywords
- internal tooth
- lock washer
- tooth lock
- groove
- staking punch
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Classifications
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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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
-
- 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
- B21D53/00—Making other particular articles
- B21D53/16—Making other particular articles rings, e.g. barrel hoops
- B21D53/20—Making other particular articles rings, e.g. barrel hoops washers, e.g. for sealing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
- Bolts, Nuts, And Washers (AREA)
Abstract
This patent is related to spare parts processing machinery field, specifically disclose a kind of method for internal tooth lock washer punching press, a kind of decompressor has been used in this process for stamping, the decompressor is when in use, single punching press can be carried out to the first internal tooth lock washer and the second internal tooth lock washer, also punching press simultaneously can be carried out to the first internal tooth lock washer and the second internal tooth lock washer, when by the first internal tooth lock washer and the punching press simultaneously of the second internal tooth lock washer, the ram efficiency of the first internal tooth lock washer and the second internal tooth lock washer can effectively be improved, improve the processing efficiency of internal tooth lock washer.This programme can carry out punching press simultaneously to the first internal tooth lock washer and the second internal tooth lock washer, accelerate the ram efficiency of the first internal tooth lock washer and the second internal tooth lock washer.
Description
Technical field
The invention belongs to spare parts processing machinery field, and in particular to a kind of method for internal tooth lock washer punching press.
Background technology
Internal tooth lock washer is a kind of stamping parts, is may be used between nut and bolt, can effectively prevent spring with
Bolt is relaxed, while internal tooth lock washer fastener uniform force, prevents that loosening is also reliable than common spring packing ring small volume；
Internal tooth lock washer is also a kind of easy locking back-up ring simultaneously, and available on axle, now the tooth on packing ring medial surface has only
Move back function.
Internal tooth lock washer has plurality of specifications, as external diameter is 6mm, internal diameter 3.2mm, the number of teeth are that first internal tooth is locked in 6
Tight packing ring and the second internal tooth lock washer that external diameter is 30mm, internal diameter 19mm, the number of teeth are 12, are locked from the first internal tooth
After first pressing part of the first adaptable staking punch of packing ring specification and first the first internal tooth lock washer of push rod punching press, processing
, it is necessary to be adapted from the second internal tooth lock washer specification to the second staking punch and the second push rod during the second internal tooth lock washer
Punching press is carried out to the second pressing part of the second internal tooth lock washer, the process of the staking punch of replacing is complicated；Existing punching press simultaneously
Internal tooth lock washer is usually carried out single punching press by device when carrying out punching press to internal tooth lock washer, the efficiency of punching press compared with
It is low.
The content of the invention
The invention is intended to provide a kind of method for internal tooth lock washer punching press, with to the first internal tooth lock washer and
Two internal tooth lock washers carry out punching press simultaneously, accelerate the ram efficiency of the first internal tooth lock washer and the second internal tooth lock washer.
In order to achieve the above object, base case of the invention is as follows：A kind of method for internal tooth lock washer punching press,
Comprise the following steps：
Step 1：Prepare a kind of decompressor, including board, stamping cylinder and the slide bar being vertically arranged, the lower end of the slide bar with
Board is fixedly connected, and the stamping cylinder vertical sliding is arranged on slide bar, it is characterised in that described also including punching mechanism
Punching mechanism includes fixed plate, the first staking punch and the second hollow staking punch, second staking punch and the first staking punch
Upper end is fixedly connected with the lower surface of fixed plate, and the first staking punch is coaxially disposed with the second staking punch, the stamping cylinder
Lower surface be provided with mounting plate mounting groove；The board is provided with the first standing groove for placing the first internal tooth lock washer
With the second standing groove for placing the second internal tooth lock washer, first standing groove is relative with the first staking punch, the second standing groove
Relative with the second staking punch, the bottom surface of first standing groove is provided with the first groove, and the bottom surface of the second standing groove is recessed provided with second
Groove, the first vertical push rod is provided with the first groove, is provided with the second vertical push rod in the second groove, first push rod it is upper
End contacts with the lower surface of the first pressing part, the and the upper end of push rod contacts with the lower surface of the second pressing part；First punching
During ram coin the first internal tooth lock washer of energy, second the second internal tooth lock washer of staking punch punching press；The upper table of the mounting groove
Face is provided with the first deep-slotted chip breaker and the second deep-slotted chip breaker, and the arc length on the same circumference of first deep-slotted chip breaker and the second deep-slotted chip breaker is not
Together, the upper surface of the fixed plate be provided with the first arc-shaped limit block of the first deep-slotted chip breaker interference fits and with the second deep-slotted chip breaker mistake
Cross the second arc-shaped limit block of cooperation；The board upper surface is provided with pickup groove, and the first standing groove in the second standing groove with being all provided with
There is a pickup groove of indent, the pickup groove, the pickup groove of the first standing groove on the board connect with the pickup groove of the second standing groove
It is logical, be provided with the pickup band of hardness in the pickup groove, the pickup band not with the first push rod and the second ejector pin contact；
Step 2：The first arc-shaped limit block in fixed plate in step 1 is relative with the first deep-slotted chip breaker in mounting groove, second
Arc-shaped limit block is relative with the second deep-slotted chip breaker in mounting groove, and then the first arc-shaped limit block is embedded into the first deep-slotted chip breaker,
In second arc-shaped limit block and the second deep-slotted chip breaker, now the first staking punch is aligned with the first push rod, the second staking punch and the second top
The alignment of bar；
Step 3：Pickup band is placed into pickup groove, the both ends and board upper surface for making pickup band are detachably connected；
Step 4：First internal tooth lock washer to be punched is placed in the first standing groove, while the second internal tooth to be punched is locked
Tight packing ring is placed in the second standing groove, makes lower surface and the upper table of the first push rod of the first pressing part of the first internal tooth lock washer
Face contacts, the lower surface of the second pressing part of the second internal tooth lock washer and the upper surface of the second push rod；
Step 5：Start stamping cylinder, stamping cylinder drives the first staking punch and the second staking punch to move down, the first staking punch
Punching press is carried out to the first internal tooth lock washer, while the second staking punch carries out punching press to the second internal tooth lock washer；
Step 6：After the completion of punching press, stamping cylinder drives the first staking punch and the second staking punch to move up；Then pickup band is dismantled
Both ends, pickup band is lifted up, and then is lifted up the first internal tooth lock washer and the second internal tooth lock washer, then removed
The first internal tooth lock washer and the second internal tooth lock washer that pickup takes.
The principle and its advantage of base case：1st, in step 1, a kind of decompressor has been used, by the decompressor
One staking punch is coaxially disposed with the second staking punch, using the power of stamping cylinder simultaneously in the first internal tooth lock washer and second
Tooth lock washer carries out punching press, and during punching press, the first staking punch and the second staking punch will not interfere with each other, and can greatly improve
The ram efficiency of first internal tooth lock washer and the second internal tooth lock washer；2nd, in step 2, due to the first deep-slotted chip breaker, the second arc
The setting of shape groove, the first arc-shaped limit block and the second arc-shaped limit block, the installation position that fixed plate is installed in mounting groove be equipped with and
It is only a kind of, the first staking punch and the first push rod and the rapid alignment of the second staking punch and the second push rod, energy can be further ensured that
Accelerate the installation of the first staking punch and the second staking punch；3rd, in step 3, pickup band is preset, facilitating will in subsequent step
First internal tooth lock washer and the second internal tooth lock washer take out；4th, in step 4, the first packing ring is placed into the first standing groove
Interior, second packing ring is placed into the second standing groove, at the same allow the first internal tooth lock washer the first pressing part lower surface and the
The upper surface of one push rod, the lower surface and the upper surface of the second push rod of the second pressing part of the second internal tooth lock washer connect
Touch, be easy to the first staking punch and the first push rod to carry out accurate punching press, the second staking punch and the second push rod energy to the first pressing part
Accurate punching press is carried out to the second pressing part；5th, step 5 is the first staking punch and the second staking punch to the first internal tooth lock washer and
Punching course while second internal tooth lock washer；6th, in step 6, can be put by lifting the taking-up of the pickup band in pickup groove first
Put the second internal tooth lock washer in the first internal tooth lock washer and the second standing groove in groove, the process fast and easy of taking-up.
In summary, a kind of decompressor has been used in this process for stamping, the decompressor when in use, can be to first
Internal tooth lock washer and the second internal tooth lock washer carry out single punching press, also can be to the first internal tooth lock washer and the second internal tooth
Lock washer carries out punching press simultaneously, can be effective when by the first internal tooth lock washer and the punching press simultaneously of the second internal tooth lock washer
The internal tooth lock washer of raising first and the second internal tooth lock washer ram efficiency, improve internal tooth lock washer processing effect
Rate.
Preferred scheme one：Based on scheme preferred scheme, in step 3, the width of pickup band and the width of pickup groove
Unanimously, it is 1cm；And the consistency of thickness of the thickness of pickup band and pickup groove.By above-mentioned setting, pickup band can be completely embedded into
Into pickup groove, it is avoided that pickup band moves in pickup groove, can also prevents pickup band to the first internal tooth lock washer and second
The punching press of internal tooth lock washer interferes.
Preferred scheme two：Preferably one preferred scheme, in step 4, when the second internal tooth lock pad to be punched
After circle is placed into the second standing groove, the vertical distance of the first internal tooth lock washer and the first internal tooth lock washer is more than 3cm.Pass through
Above-mentioned setting, now the vertical distance of the first standing groove and the second standing groove be more than 3cm, it is convenient by the first internal tooth lock washer and
Second internal tooth lock washer is placed on different horizontal planes, is easy to the first internal tooth lock washer and the second internal tooth lock washer
Position be adjusted.
Brief description of the drawings
Fig. 1 is the structural representation of decompressor in the present invention；
Fig. 2 is the first internal tooth lock washer and the second internal tooth lock washer top view in Fig. 1；
Fig. 3 is the upward view of stamping cylinder in Fig. 1；
Fig. 4 is the sectional view of compressing unit in Fig. 1.
Embodiment
Below by embodiment, the present invention is further detailed explanation：
Reference in Figure of description includes：Board 10, the first standing groove 101, the first groove 102, the second standing groove
103rd, the second groove 104, move down bar 105, the first chute 115, the first depression bar 106, the second chute 116, the second depression bar 107,
It is three chutes 117, extension spring 108, stamping cylinder 20, the first deep-slotted chip breaker 201, the second deep-slotted chip breaker 202, mounting groove 103, slide bar 30, solid
Fixed board 40, the first arc-shaped limit block 401, the second arc-shaped limit block 402, the first staking punch 50, the first push rod 501, the second punching press
First 60, second push rod 601, the first internal tooth lock washer 70, the first pressing part 701, the second internal tooth lock washer 80, the second punching press
Portion 801, pickup band 90.
Decompressor in embodiment is basic as shown in accompanying drawing 1, accompanying drawing 2 and accompanying drawing 3：Embodiment is substantially such as accompanying drawing 1, accompanying drawing
2 and accompanying drawing 3 shown in：Internal tooth lock washer decompressor, including board 10, stamping cylinder 20, the slide bar 30 being vertically arranged, punching press
Mechanism and some compressing units, lower end and the board 10 of slide bar 30 are welded, and the vertical sliding of stamping cylinder 20 is arranged on slide bar 30.
Punching mechanism includes fixed plate 40, the first arc-shaped limit block 401, the second arc-shaped limit block 402, the first staking punch 50
With the second hollow staking punch 60, the upper end of the second staking punch 60 and the first staking punch 50 is welded with the lower surface of fixed plate 40
Connect, and the first staking punch 50 is coaxially disposed with the second staking punch 60, the lower surface of stamping cylinder 20 is provided with mounting plate 40
Mounting groove 103；The upper surface of mounting groove 103 is provided with the first deep-slotted chip breaker 201 and the second deep-slotted chip breaker 202, the first deep-slotted chip breaker 201 with
Arc length on second deep-slotted chip breaker, 202 same circumference is different；First arc-shaped limit block 401 and the second arc-shaped limit block 402 weld
On the upper surface of fixed plate 40, and the first arc-shaped limit block 401 and the interference fits of the first deep-slotted chip breaker 201, the second arc-shaped limit
The interference fits of 402 and second deep-slotted chip breaker of block 202, when an arc-shaped limit block is embedded into the first deep-slotted chip breaker 201 and the second arc-shaped limit
When in the deep-slotted chip breaker 202 of block 402 and second, the first staking punch 50 is aligned with the first push rod 501, the second staking punch 60 and the second push rod
601 alignments, realize rapid alignment.
Board 10 is provided with the first standing groove 101 for placing the first internal tooth lock washer 70 and places the second internal tooth lock pad
Second standing groove 103 of circle 80, the first standing groove 101 and the first staking punch 50 are relative, the second standing groove 103 and the second staking punch
60 is relative, and the bottom surface of the first standing groove 101 is provided with the first groove 102, and the bottom surface of the second standing groove 103 is provided with the second groove 104,
The first vertical push rod 501 is provided with first groove 102, the second vertical push rod 601, the first top are provided with the second groove 104
The upper end of bar 501 contacts with the lower surface of the first pressing part 701, the and the upper end of push rod and the lower surface of the second pressing part 801
Contact；During the punching press of the first staking punch 50 the first internal tooth lock washer 70 of energy, the second internal tooth lock washer of punching press of the second staking punch 60
80。
The inwall of first standing groove 101 and the second standing groove 103 is provided with the pickup groove of indent, and the upper surface of board 10 is also set
There is the pickup groove of indent, and all pickup grooves connect, be provided with the pickup band 90 of hardness in pickup groove, pickup band 90 is not with first
The push rod 601 of push rod 501 and second contacts.The first internal tooth lock washer when lifting whole pickup band 90 in first standing groove 101
70 is elevated, convenient to take out the first internal tooth lock washer 70 and the second internal tooth lock washer 80, improves the convenience of pickup；Together
When pickup band 90 do not contacted with the first push rod 501 and the second push rod 601, be avoided that in punching course pickup band 90 is made to punching press
Into interference.
As shown in Figure 4, compressing unit include move down bar 105, can be with the upper surface of the first internal tooth lock washer 70
First depression bar 106 and with the second depression bar 107 of the upper surface of the second internal tooth lock washer 80, can move down the upper end of bar 105 with
The lower surface welding of stamping cylinder 20, board 10 is interior to be provided with the first chute 115 being vertically arranged and horizontally disposed second chute
116 and the 3rd chute 117, move down the chute 115 of bar 105 and first and be located on same vertical axis, the second chute 116 and the 3rd is slided
The left end of groove 117 connects with the first chute 115, and the right-hand member of the second chute 116 connects with the first standing groove 101, the 3rd chute
117 right-hand member is connected with youngster's standing groove, and the first depression bar 106 is slidably mounted in the second chute 116, and the second depression bar 107 slides
In the 3rd chute 117, the left end of the first depression bar 106 and the second depression bar 107 is equipped with wedge surface upward, and the first depression bar
106 and the groove of the second depression bar 107 left end end face on be welded with extension spring 108, the left end of extension spring 108 with the first chute 115
Inwall welds.
The present embodiment comprises the following steps when implementing：
Step 1：Prepare the decompressor in embodiment；
Step 2：By the first arc-shaped limit block 401 in the fixed plate 40 in step 1 and the first deep-slotted chip breaker in mounting groove 103
201 is relative, and the second arc-shaped limit block 402 is relative with the second deep-slotted chip breaker 202 in mounting groove 103, then by the first arc-shaped limit
Block 401 is embedded into the first deep-slotted chip breaker 201, in the second arc-shaped limit block 402 and the second deep-slotted chip breaker 202, now the first staking punch
50 are aligned with the first push rod 501, the alignment of the second staking punch 60 and the second push rod 601；Then spacer pin is used by fixed plate 40
It is fixed with stamping cylinder 20；
Step 3：In decompressor in step 1, the width of pickup band 90 is consistent with the width of pickup groove, is 1cm；And take
The thickness of part band 90 and the consistency of thickness of pickup groove；Then pickup band 90 is placed into pickup groove, makes the both ends of pickup band 90
It is detachably connected with the upper surface of board 10；
Step 4：First internal tooth lock washer 70 to be punched is placed in the first standing groove 101, while by be punched second
Internal tooth lock washer 80 is placed in the second standing groove 103, and now the upper surface of the first internal tooth lock washer 70 is locked with the first internal tooth
The vertical distance of the upper surface of packing ring 70 is 4cm, and the first internal tooth lock washer 70 is located at the downside of the first internal tooth lock washer 70,
Make the lower surface of the first pressing part 701 of the first internal tooth lock washer 70 and the upper surface of the first push rod 501, the second internal tooth
The lower surface of second pressing part 801 of lock washer 80 and the upper surface of the second push rod 601；
Step 5：Starting stamping cylinder 20, stamping cylinder 20 drives the first staking punch 50 and the second staking punch 60 to move down, the
One staking punch 50 carries out punching press to the first internal tooth lock washer 70, while the second staking punch 60 enters to the second internal tooth lock washer 80
Row punching press；During stamping cylinder 20 moves down, drive moves down bar 105 and moved down, and moves down bar 105 and enters in the first chute 115,
When moving down bar 105 and being moved at the second depression bar 107, the wedge surface for moving down bar 105 with the second depression bar 107 is contacted, and extension spring 108 is drawn
Stretch, while the second depression bar 107 is slided to close to the direction of the second internal tooth lock washer 80, the second depression bar 107 and the second internal tooth
The upper surface of lock washer 80 offsets, and when moving down bar 105 and being moved at the first depression bar 106, moves down the depression bar of bar 105 and first
106 wedge surface contact, extension spring 108 are stretched, while the first depression bar 106 is slided to close to the direction of the first internal tooth lock washer 70
Dynamic, the upper surface of the first depression bar 106 and the first internal tooth lock washer 70 is offseted, and then the first internal tooth in punching course can be locked
The internal tooth lock washer 80 of packing ring 70 and second carries out spacing, while can prevent the first internal tooth lock washer 70 and the second internal tooth from locking
The circumference of packing ring 80 deforms upon；
Step 6：After the completion of punching press, stamping cylinder 20 drives the first staking punch 50 and the second staking punch 60 to move up；Then dismounting takes
The both ends of part band 90, be lifted up pickup band 90, so make the first internal tooth lock washer 70 and the second internal tooth lock washer 80 to
Upper lifting, then remove the first internal tooth lock washer 70 and the second internal tooth lock washer 80 on pickup band 90.
Above-described is only embodiments of the invention, and the general knowledge such as known concrete structure and/or characteristic is herein in scheme
Do not describe excessively.It should be pointed out that for those skilled in the art, without departing from the structure of the invention, also
Several modifications and improvements can be made, these should also be considered as protection scope of the present invention, and these are real all without the present invention is influenceed
The effect and practical applicability applied.The scope of protection required by this application should be based on the content of the claims, specification
In the record such as embodiment can be used for the content for explaining claim.
Claims (3)
- A kind of 1. method for internal tooth lock washer punching press, it is characterised in that comprise the following steps：Step 1：Prepare a kind of decompressor, including board, stamping cylinder and the slide bar being vertically arranged, the lower end of the slide bar with Board is fixedly connected, and the stamping cylinder vertical sliding is arranged on slide bar, it is characterised in that described also including punching mechanism Punching mechanism includes fixed plate, the first staking punch and the second hollow staking punch, second staking punch and the first staking punch Upper end is fixedly connected with the lower surface of fixed plate, and the first staking punch is coaxially disposed with the second staking punch, the stamping cylinder Lower surface be provided with mounting plate mounting groove；The board is provided with the first standing groove for placing the first internal tooth lock washer With the second standing groove for placing the second internal tooth lock washer, first standing groove is relative with the first staking punch, the second standing groove Relative with the second staking punch, the bottom surface of first standing groove is provided with the first groove, and the bottom surface of the second standing groove is recessed provided with second Groove, the first vertical push rod is provided with the first groove, is provided with the second vertical push rod in the second groove, first push rod it is upper End contacts with the lower surface of the first pressing part, the and the upper end of push rod contacts with the lower surface of the second pressing part；First punching During ram coin the first internal tooth lock washer of energy, second the second internal tooth lock washer of staking punch punching press；The upper table of the mounting groove Face is provided with the first deep-slotted chip breaker and the second deep-slotted chip breaker, and the arc length on the same circumference of first deep-slotted chip breaker and the second deep-slotted chip breaker is not Together, the upper surface of the fixed plate be provided with the first arc-shaped limit block of the first deep-slotted chip breaker interference fits and with the second deep-slotted chip breaker mistake Cross the second arc-shaped limit block of cooperation；The board upper surface is provided with pickup groove, and the first standing groove in the second standing groove with being all provided with There is a pickup groove of indent, the pickup groove, the pickup groove of the first standing groove on the board connect with the pickup groove of the second standing groove It is logical, be provided with the pickup band of hardness in the pickup groove, the pickup band not with the first push rod and the second ejector pin contact；Step 2：The first arc-shaped limit block in fixed plate in step 1 is relative with the first deep-slotted chip breaker in mounting groove, second Arc-shaped limit block is relative with the second deep-slotted chip breaker in mounting groove, and then the first arc-shaped limit block is embedded into the first deep-slotted chip breaker, In second arc-shaped limit block and the second deep-slotted chip breaker, now the first staking punch is aligned with the first push rod, the second staking punch and the second top The alignment of bar；Step 3：Pickup band is placed into pickup groove, the both ends and board upper surface for making pickup band are detachably connected；Step 4：First internal tooth lock washer to be punched is placed in the first standing groove, while the second internal tooth to be punched is locked Tight packing ring is placed in the second standing groove, makes lower surface and the upper table of the first push rod of the first pressing part of the first internal tooth lock washer Face contacts, the lower surface of the second pressing part of the second internal tooth lock washer and the upper surface of the second push rod；Step 5：Start stamping cylinder, stamping cylinder drives the first staking punch and the second staking punch to move down, the first staking punch Punching press is carried out to the first internal tooth lock washer, while the second staking punch carries out punching press to the second internal tooth lock washer；Step 6：After the completion of punching press, stamping cylinder drives the first staking punch and the second staking punch to move up；Then pickup band is dismantled Both ends, pickup band is lifted up, and then is lifted up the first internal tooth lock washer and the second internal tooth lock washer, then removed The first internal tooth lock washer and the second internal tooth lock washer that pickup takes.
- 2. a kind of method for internal tooth lock washer punching press according to claim 1, it is characterised in that in step 3, take The width of part band is consistent with the width of pickup groove, is 1cm；And the consistency of thickness of the thickness of pickup band and pickup groove.
- A kind of 3. method for internal tooth lock washer punching press according to claim 2, it is characterised in that in step 4, when After second internal tooth lock washer to be punched is placed into the second standing groove, the first internal tooth lock washer and the first internal tooth lock washer Vertical distance be more than 3cm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710711843.6A CN107413912B (en) | 2017-08-18 | 2017-08-18 | A method of being used for internal tooth lock washer punching press |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710711843.6A CN107413912B (en) | 2017-08-18 | 2017-08-18 | A method of being used for internal tooth lock washer punching press |
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| CN107413912A true CN107413912A (en) | 2017-12-01 |
| CN107413912B CN107413912B (en) | 2018-10-26 |
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| CN110315291A (en) * | 2019-07-04 | 2019-10-11 | 成都飞机工业（集团）有限责任公司 | A kind of processing method and shaping jig of internal tooth washer |
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|---|---|---|---|---|
| CN108724342A (en) * | 2018-06-19 | 2018-11-02 | 中航飞机起落架有限责任公司 | A kind of structure of compound mould |
| CN110315291A (en) * | 2019-07-04 | 2019-10-11 | 成都飞机工业（集团）有限责任公司 | A kind of processing method and shaping jig of internal tooth washer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107413912B (en) | 2018-10-26 |
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