CN207223007U - Hole drilling die and five station drill jigs - Google Patents
Hole drilling die and five station drill jigs Download PDFInfo
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- CN207223007U CN207223007U CN201721122554.4U CN201721122554U CN207223007U CN 207223007 U CN207223007 U CN 207223007U CN 201721122554 U CN201721122554 U CN 201721122554U CN 207223007 U CN207223007 U CN 207223007U
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- 238000005553 drilling Methods 0.000 title claims abstract description 41
- 238000003754 machining Methods 0.000 abstract description 13
- 238000000034 method Methods 0.000 description 16
- 230000008569 process Effects 0.000 description 10
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- 238000010586 diagram Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000008859 change Effects 0.000 description 1
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- 238000003379 elimination reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Abstract
The utility model provides a kind of hole drilling die, is related to clamping tool for machine work technical field, and the hole drilling die includes positioning bolt, location nut and flat drill jig body；The positioning bolt and the location nut are used for the movement for prolonging one direction of Z axis for limiting workpiece；Multiple drill bushings are provided with the drill jig body；Inner surface is provided with cavity, and the cavity is groove body, and locking hole is provided with the bottom wall；The cavity, which is used to limiting prolonging for workpiece, X-axis and prolongs the movement of Y-axis, the rotation around X-axis and around Y-axis, and rotation about the z axis；The bottom wall of the cavity is used for the movement for prolonging another direction of Z axis for limiting workpiece.The hole drilling die of the application, when the multiple faces for solving workpiece to be processed of the prior art are required to drilling, difficulty of processing is big, and machining accuracy is low, the technical problem of high processing costs.The utility model additionally provides a kind of five station drill jigs including above-mentioned hole drilling die.
Description
Technical field
Clamping tool for machine work technical field is the utility model is related to, more particularly, to a kind of hole drilling die.The utility model
Further relate to a kind of five station drill jigs with above-mentioned hole drilling die.
Background technology
There is the characteristics of a kind of part is more and more, this kind of part to be at present：It is required for processing to portal on its all face,
And the hole on each surface is two or more, and there is its specific specification in each hole respectively.This kind of part is main in processing
Difficult point is the definite of the position in hole, including the position between the hole on the hole and other faces on a face, and on the same face
Position between hole.
When processing this kind of part in the prior art, usually had been manually done by advanced technician, each hole is mainly positioned manually
Position, and behind the position in hole of having good positioning, constantly adjusted in the processing in any one hole, determine the location of workpiece to ensure
Workpiece cannot change in all processes relative to the position of main shaft.
Above-mentioned processing method there are the problem of be due to need multiple bearing, and error will certainly be produced every time by positioning, by mistake
The accumulation of difference has a great impact finished workpart.Certainly the advanced technician of specialty is able to know that how to adjust work step with as far as possible
Elimination error.Therefore this kind of part is processed, since its technological level is high, it is necessary to which consummate technician completes.It is even in addition, refined
Ripe technician is also to ensure based on processing quality, can generally also sacrifice process velocity.
To sum up, all it is the workpiece of finished surface for all faces, method difficulty of processing of the prior art is big, processing efficiency
It is low, especially process the above-mentioned hole on the same face and split the location dimension in the hole in two faces and have higher requirements
Workpiece when, the problem of high, is required to the technical merit of worker.Therefore, how a kind of hole drilling die is provided, is processing above-mentioned work
Reduce difficulty of processing during part, improve machining accuracy and process velocity, so that processing cost is reduced while machining accuracy is ensured,
It is those skilled in the art's urgent problem to be solved.
Based on this, the utility model provides a kind of hole drilling die to solve above-mentioned technical problem.
Utility model content
The purpose of this utility model is to provide a kind of hole drilling die, to alleviate work to be processed existing in the prior art
When multiple faces of part are required to drilling, difficulty of processing is big, and machining accuracy is low, the technical problem of high processing costs.The utility model
Another object be to provide a kind of five station drill jigs.
The utility model is realized in this way：
Hole drilling die provided by the utility model, including positioning bolt, location nut and flat drill jig body；It is described
Positioning bolt and the location nut are used for the movement for prolonging one direction of Z axis for limiting workpiece；
Multiple drill bushings are provided with the drill jig body；The outer surface of the drill jig body is plane, and inner surface is provided with
Cavity, the cavity are groove body, and the cavity includes side wall and bottom wall, and the side wall surrounds the week of region and workpiece to be processed
Side form fit, is provided with locking hole on the bottom wall；
The cavity, which is used to limiting prolonging for workpiece, X-axis and prolongs the movement of Y-axis, the rotation around X-axis and around Y-axis, and about the z axis
Rotation；The bottom wall of the cavity is used for the movement for prolonging another direction of Z axis for limiting workpiece.
Further, be additionally provided with the cavity and pick and place groove, it is described pick and place groove be arranged on the side wall upside and/or
Inner side.
Further, the locking hole is through hole, and the positioning bolt is penetrated from workpiece surface, is worn from the locking hole
Go out；The location nut is located on the outer surface of drill jig body, is spirally connected with the positioning bolt.
Further, the side wall area defined of the cavity is rectangle.
The hole drilling die provided by the utility model has the technical effect that：
The hole drilling die provided by the utility model, including positioning bolt, location nut and flat drill jig body,
Positioning bolt and location nut are used for the movement for prolonging one direction of Z axis for limiting workpiece, and drill jig body is used to limit other directions
The free degree.
Multiple drill bushings are provided with drill jig body.The structure snd size of drill bushing are normalized, it is primarily used to determine
Drill bit, reamer, reamer etc. are sized the axial location of cutter.Drill bushing can position and guide cutter to be processed, so as to carry
The machining accuracy in high single hole.The connection mode of existing drill bushing is that drill bushing is bumped into bushing plate, typically using interference fit
Mode.The mode of drill bushing is set to be same as above on the drill jig body of the application.
Drill jig body and the adjacent one side of workpiece are known as to the inner surface of drill jig, another side is outer surface.Drill jig body
Outer surface is plane, and inner surface is provided with cavity.Cavity is groove body, including side wall and bottom wall, and side wall surrounds region and to be added
The side form fit of work workpiece, is provided with locking hole on bottom wall.During processing, the blank of workpiece is placed in cavity, is had upper
Prolonging X-axis and prolonging the movement of Y-axis for workpiece can be limited by stating the cavity of structure, and around X-axis, around the rotation of Y-axis and Z axis, and
Prolong the movement in another direction of Z axis.
In cartesian coordinate system, workpiece to be processed has six-freedom degree.Said structure can incite somebody to action in one-time positioning
Workpiece positions completely, i.e., once limits the free degree of six direction.Pass through the drill bushing set on drill jig body, one-time positioning at this time
Process all holes to be processed.Due to there is provided drill bushing, ensure that the machining accuracy in single hole.Due to only needing in workpiece
In the porose processing of institute, it is only necessary to which positioning once, ensure that the position dimension between hole.Therefore it is provided by the utility model described
Hole drilling die, at multiple holes on processing a workpiece, it is not necessary to resetting, it is no longer necessary to complicated error analysis, it is general
Logical worker can also complete, and provide production efficiency while machining accuracy is ensured, reduce processing cost.
Five stations drill jig provided by the utility model, including above-mentioned hole drilling die, further include sidetracking template, the sidetracking
Template and the side wall of the cavity are detachably connected；Multiple drill jigs are provided with the sidetracking template.
Further, the sidetracking template is connected with the side wall of the cavity by pin.
The further pin is arranged on the lateral surface of the remote cavity of the side wall of the cavity, the pin
The plane perpendicular of axis direction and the sidetracking template；Pin hole is correspondingly arranged in the sidetracking template.
Further, the side wall of the sidetracking template and the cavity is fixed by fixing screws.
Further, the upper edge of the side wall of the cavity is provided with slot, and the sidetracking template is inserted into the slot.
Further, the side wall of the cavity includes multistage, angled therebetween between every two sections, and one is both provided with every section
Sidetracking template.
Five stations drill jig provided by the utility model has the technical effect that：
Firstly, since hole drilling die has above-mentioned technique effect, the five station drill jigs with hole drilling die also should be with phase
The technique effect answered.
Secondly, additionally it is possible to sidetracking template is set on the cavity of drill jig body, multiple drill jigs are provided with sidetracking template.Make
Can be in the flank hole of workpiece, due to there is provided drill bushing, ensure that the machining accuracy in single hole with sidetracking template.Due to sidetracking
Template can be connected on the side wall of cavity, and the location dimension between sidetracking template and workpiece can ensure.Due to sidetracking template
It is detachably connected with the side wall of cavity, when processing first can fix workpiece and drill jig body, further according to needing to assemble sidetracking mould
Plate, the positioning of offside bushing plate is realized based on drill jig body to the complete positioning of workpiece.In this way, can be with by positioning once
Complete the processing in the hole on all faces of workpiece.In addition other techniques are carried out if desired in processing, it is only necessary to overturn five works
Position drill jig can complete the processing in all faces.
Based on this, the utility model is than original technology, when processing all faces and being required for the workpiece of drilling, it is only necessary to one
Secondary positioning can process all holes on all faces, be reduced with processing difficulty of processing, and process velocity improves, and ensure to add
The advantages of processing cost is reduced while work precision.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical solution of the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, describe below
In attached drawing be the utility model some embodiments, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is the structure diagram of hole drilling die；
Fig. 2 is the front view of five station drill jigs；
Fig. 3 is the assembling schematic diagram of five station drill jigs；
Fig. 4 is the outline drawing of five station drill jigs.
Mark：1- positioning bolts；2- location nuts；3- cavities；31- side walls；32- bottom walls；4- drill bushings；5- is sold
Nail；6- fixing screws；7- picks and places groove；8- sidetracking templates；9- bore templates.
Embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model part of the embodiment, instead of all the embodiments.Based on the embodiment in the utility model, sheet
Field those of ordinary skill all other embodiments obtained without making creative work, belong to this practicality
Novel protected scope.
, it is necessary to explanation in the description of the utility model, such as occur term " " center ", " on ", " under ", " left side ",
" right side ", " vertical ", " level ", " interior ", " outer " etc., orientation or position relationship indicated by it be based on orientation shown in the drawings or
Position relationship, is for only for ease of description the utility model and simplifies description, rather than indicates or imply signified device or member
Part must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limitation to the utility model.
In addition, such as there is term " first ", " second ", " the 3rd " are only used for description purpose, and it is not intended that instruction or implying opposite
Importance.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term such as occurs in the description of the utility model
" installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or one
Connect body；Can mechanically connect or be electrically connected；It can be directly connected, can also be indirect by intermediary
It is connected, can is the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State concrete meaning of the term in the utility model.
Embodiment one
Hole drilling die in the present embodiment, is mainly used for processing the workpiece that each face is required for drilling.The processing of upper workpiece
Difficult point is that the positioning in hole needs repeatedly, and multiple bearing certainly will produce the accumulation of error, and it is typically by scene to eliminate error accumulation
Adjust work step to realize, the process of above-mentioned adjustment workpiece usually requires advanced technician's completion in the prior art.
The core of the utility model is to provide a kind of hole drilling die, to alleviate workpiece to be processed existing in the prior art
Multiple faces be required to drilling when, difficulty of processing is big, and machining accuracy is low, the technical problem of high processing costs.
Fig. 1 is the structure diagram of hole drilling die；Fig. 2-Fig. 4 is the five station drill jigs for including hole drilling die, Fig. 2 five
The front view of station drill jig, Fig. 3 are the assembling schematic diagram of five station drill jigs, and Fig. 4 is the outline drawing of five station drill jigs.
As Figure 1-Figure 4, a kind of hole drilling die is provided in the present embodiment, and the hole drilling die includes positioning spiral shell
Bolt 1, location nut 2 and flat drill jig body；What the positioning bolt 1 and the location nut 2 were used to limiting workpiece prolongs Z
The movement in one direction of axis；
Multiple drill bushings 4 are provided with the drill jig body；The outer surface of the drill jig body is plane, and inner surface is provided with
Cavity 3, the cavity 3 are groove body, and the cavity 3 includes side wall 31 and bottom wall 32, and the side wall 31 surrounds region and to be added
The side form fit of work workpiece, is provided with locking hole on the bottom wall 32；
The cavity 3, which is used to limiting prolonging for workpiece, X-axis and prolongs the movement of Y-axis, the rotation around X-axis and around Y-axis, and around Z
The rotation of axis；The bottom wall 32 of the cavity 3 is used for the movement for prolonging another direction of Z axis for limiting workpiece.
The hole drilling die provided by the utility model, including positioning bolt 1, location nut 2 and flat drill jig sheet
Body, positioning bolt 1 and location nut 2 are used for the movement for prolonging one direction of Z axis for limiting workpiece, and drill jig body is used to limit other
The free degree in direction.
Multiple drill bushings 4 are provided with drill jig body.The structure snd size of drill bushing 4 are normalized, it is primarily used to really
Determine the axial location that drill bit, reamer, reamer etc. are sized cutter.Drill bushing 4 can position and guide cutter to be processed, so that
Improve the machining accuracy in single hole.The connection mode of existing drill bushing 4 is that drill bushing 4 is bumped into bushing plate, typically using interference
The mode of cooperation.The mode of drill bushing 4 is set to be same as above on the drill jig body of the application.
Drill jig body and the adjacent one side of workpiece are known as to the inner surface of drill jig, another side is outer surface.Drill jig body
Outer surface is plane, and inner surface is provided with cavity 3.Cavity 3 is groove body, including side wall 31 and bottom wall 32, side wall 31 surround area
Domain and the side form fit of workpiece to be processed, are provided with locking hole on bottom wall 32.During processing, the blank of workpiece is placed on cavity
In 3, the cavity 3 with said structure can limit prolonging X-axis and prolonging the movement of Y-axis for workpiece, and around X-axis, around Y-axis and Z axis
Rotation, and prolong the movement in another direction of Z axis.
In cartesian coordinate system, workpiece to be processed has six-freedom degree.Said structure can incite somebody to action in one-time positioning
Workpiece positions completely, i.e., once limits the free degree of six direction.It is once fixed at this time by the drill bushing 4 set on drill jig body
Position processes all holes to be processed.Due to there is provided drill bushing 4, ensure that the machining accuracy in single hole.Due to only needing in work
In the porose processing of institute of part, it is only necessary to which positioning once, ensure that the position dimension between hole.Therefore it is provided by the utility model
The hole drilling die, at multiple holes on processing a workpiece, it is not necessary to resetting, it is no longer necessary to complicated error point
Analysis, common worker can also complete, and provide production efficiency while machining accuracy is ensured, reduce and be processed into
This.
On the basis of above-described embodiment, further, it is additionally provided with the cavity 3 and picks and places groove 7, it is described to pick and place groove 7
It is arranged on the upside and/or inner side of the side wall 31.Pick and place groove 7 to be used for before processing with after processing, sky is reserved to pick and place workpiece
Between.The above-mentioned groove 7 that picks and places is suitable for any form for picking and placeing workpiece, such as manually picks and places, manipulator picks and places.Especially with machinery
When hand picks and places, the positioning datum that groove 7 can be also used for manipulator is picked and placeed.
On the basis of above-described embodiment, further, the locking hole is through hole, and the positioning bolt 1 is from workpiece table
Face penetrates, and is pierced by from the locking hole；The location nut 2 is located on the outer surface of drill jig body, with the positioning bolt 1
It is spirally connected.
The structure of locking hole can have a variety of, if blind hole, positioning bolt 1 can be embedded in locking hole.But this
When positioning bolt 1 position cannot adjust.
On the basis of above-described embodiment, it is preferred that the locking hole is arranged to through hole.Positioning bolt 1 is from workpiece at this time
Surface penetrates, and is pierced by from locking hole, and location nut 2 is located on the outer surface of drill jig body, is spirally connected with positioning bolt 1.At this time
The aperture of through hole can be between the outside diameter of positioning bolt 1 and the maximum size of location nut 2.If location nut at this time
2 use hex nut, and the aperture of locking hole can be less than the full-size at the outer-hexagonal of location nut 2.That is, spiral shell is positioned at this time
It is clearance fit between bolt 1 and locking hole.The position of positioning bolt 1 can be adjusted by above-mentioned gap.
On the basis of above-described embodiment, further, 31 area defined of side wall of the cavity 3 is rectangle.
Each face is needed to process in the workpiece to portal, its shape is most for the workpiece of rectangle.
Embodiment two
Fig. 2-Fig. 4 is the five station drill jigs that another embodiment of the utility model provides；Five work provided in this embodiment
Position drill jig, is that the further of the hole drilling die provided embodiment one is improved, one described technical solution of embodiment
Belong to the embodiment, the technical solution that embodiment one has been described above is not repeated to describe.
A kind of five station drill jigs, including above-mentioned hole drilling die are provided in the present embodiment, further include sidetracking template 8,
The sidetracking template 8 and the side wall 31 of the cavity 3 are detachably connected；Multiple drill jigs are provided with the sidetracking template 8.
Firstly, since hole drilling die has above-mentioned technique effect, the five station drill jigs with hole drilling die also should be with phase
The technique effect answered.
Secondly, additionally it is possible to sidetracking template 8 is set on the cavity 3 of drill jig body, multiple brills are provided with sidetracking template 8
Mould.Can be in the flank hole of workpiece, due to there is provided drill bushing 4, ensure that the machining accuracy in single hole using sidetracking template 8.
Since sidetracking template 8 can be connected on the side wall 31 of cavity 3, the location dimension between sidetracking template 8 and workpiece can ensure.
Since the side wall 31 of sidetracking template 8 and cavity 3 is detachably connected, when processing, first can fix workpiece and drill jig body, then root
According to assembling sidetracking template 8 is needed, the positioning of offside bushing plate 8 is realized to the complete positioning of workpiece based on drill jig body.In this way,
The processing in the hole on all faces of workpiece can be completed by positioning once.In addition other works are carried out if desired in processing
Skill, it is only necessary to which the processing in all faces can be completed by overturning five station drill jigs.
Connection mode between sidetracking template 8 and the cavity 3 of drill jig body can have a variety of, such as be connected using pin 5,
Using being connected together, it can also use and be spirally connected, be bonded.
As shown in figure 3, on the basis of above-described embodiment, further, the side of the sidetracking template 8 and the cavity 3
Wall 31 is connected by pin 5.At this time, pin 5 also has the function that positioning.
Further, the pin 5 is arranged on the lateral surface of the remote cavity 3 of the side wall 31 of the cavity 3, described
The plane perpendicular of the axis direction of pin 5 and the sidetracking template 8；Pin hole is correspondingly arranged in the sidetracking template 8.
Further, the side wall 31 of the sidetracking template 8 and the cavity 3 is fixed by fixing screws 6.
On the basis of above-described embodiment, further, the upper edge of the side wall 31 of the cavity 3 is provided with slot, described
Sidetracking template 8 is inserted into the slot.
On the basis of above-described embodiment, further, the side wall 31 of the cavity 3 includes multistage, between every two sections mutually
Into angle, a sidetracking template 8 is both provided with every section.As shown in figure 4, when bore template 9 is rectangle, set in its surrounding
It is equipped with a sidetracking template 8.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, those of ordinary skill in the art should
Understand：It can still modify the technical solution described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical solution of type.
Claims (10)
1. a kind of hole drilling die, it is characterised in that including positioning bolt, location nut and flat drill jig body；It is described fixed
Position bolt and the location nut are used for the movement for prolonging one direction of Z axis for limiting workpiece；
Multiple drill bushings are provided with the drill jig body；The outer surface of the drill jig body is plane, and inner surface is provided with cavity,
The cavity is groove body, and the cavity includes side wall and bottom wall, and the side wall surrounds the side shape of region and workpiece to be processed
Shape matches, and locking hole is provided with the bottom wall；
The cavity is used to limiting prolonging X-axis and prolonging the movement of Y-axis, the rotation around X-axis and around Y-axis for workpiece, and turning about the z axis
It is dynamic；The bottom wall of the cavity is used for the movement for prolonging another direction of Z axis for limiting workpiece.
2. hole drilling die according to claim 1, it is characterised in that it is additionally provided with the cavity and picks and places groove, it is described to take
Put upside and/or inner side that groove is arranged on the side wall.
3. hole drilling die according to claim 1, it is characterised in that the locking hole is through hole, the positioning bolt from
Workpiece surface penetrates, and is pierced by from the locking hole；The location nut is located on the outer surface of drill jig body, with the positioning
Bolt is spirally connected.
4. hole drilling die according to claim 1, it is characterised in that the side wall area defined of the cavity is square
Shape.
5. a kind of five station drill jigs, it is characterised in that including such as claim 1-4 any one of them hole drilling die, further include
Sidetracking template, the sidetracking template and the side wall of the cavity are detachably connected；Multiple drill jigs are provided with the sidetracking template.
6. five stations drill jig according to claim 5, it is characterised in that the side wall of the sidetracking template and the cavity leads to
Cross pin connection.
7. five stations drill jig according to claim 6, it is characterised in that the pin is arranged on the side wall of the cavity
The plane perpendicular of lateral surface away from the cavity, the axis direction of the pin and the sidetracking template；The sidetracking template
On be correspondingly arranged on pin hole.
8. five stations drill jig according to claim 7, it is characterised in that the side wall of the sidetracking template and the cavity leads to
Fixing screws are crossed to fix.
9. five stations drill jig according to claim 5, it is characterised in that the upper edge of the side wall of the cavity is provided with slotting
Groove, the sidetracking template are inserted into the slot.
10. five stations drill jig according to claim 5, it is characterised in that the side wall of the cavity includes multistage, every two sections
Between it is angled therebetween, a sidetracking template is both provided with every section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721122554.4U CN207223007U (en) | 2017-09-01 | 2017-09-01 | Hole drilling die and five station drill jigs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721122554.4U CN207223007U (en) | 2017-09-01 | 2017-09-01 | Hole drilling die and five station drill jigs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207223007U true CN207223007U (en) | 2018-04-13 |
Family
ID=61860377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721122554.4U Expired - Fee Related CN207223007U (en) | 2017-09-01 | 2017-09-01 | Hole drilling die and five station drill jigs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207223007U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108422232A (en) * | 2018-06-08 | 2018-08-21 | 新兴移山（天津）重工有限公司 | A kind of fixing device for plate punching |
| CN112589156A (en) * | 2020-12-03 | 2021-04-02 | 贵州凯星液力传动机械有限公司 | Machining device for small shearing pin holes |
-
2017
- 2017-09-01 CN CN201721122554.4U patent/CN207223007U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108422232A (en) * | 2018-06-08 | 2018-08-21 | 新兴移山（天津）重工有限公司 | A kind of fixing device for plate punching |
| CN112589156A (en) * | 2020-12-03 | 2021-04-02 | 贵州凯星液力传动机械有限公司 | Machining device for small shearing pin holes |
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