CN211758559U - Quick-change primary and secondary fixture - Google Patents
Quick-change primary and secondary fixture Download PDFInfo
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- CN211758559U CN211758559U CN201921981432.XU CN201921981432U CN211758559U CN 211758559 U CN211758559 U CN 211758559U CN 201921981432 U CN201921981432 U CN 201921981432U CN 211758559 U CN211758559 U CN 211758559U
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- 210000000078 claw Anatomy 0.000 claims abstract description 50
- 230000008859 change Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 2
- 238000003754 machining Methods 0.000 description 7
- 238000005520 cutting process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005242 forging Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007514 turning Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model relates to a quick-change primary and secondary clamp, which comprises a primary claw and a secondary claw matched and connected with the primary claw; the bottom of the female claw is provided with a limiting clamping groove and limiting teeth arranged on two sides of the limiting clamping groove, and the top of the female claw is sequentially provided with a second clamping opening and a first clamping opening which are arranged in a step shape from left to right; the tops of the first clamping opening and the second clamping opening are respectively provided with a connecting hole communicated with the bottom of the female claw; the sub-claws are fixedly arranged on the second clamping opening, and the formed backrest surface is mutually attached to the bearing surface formed on the left side of the second clamping opening. The quick-change primary-secondary clamp takes the primary jaw as the body, can clamp workpieces with corresponding sizes, can be additionally provided with the secondary jaws with different size structures according to the size requirement of the workpieces, has strong adaptability, is convenient to mount and dismount, has good fixing effect, reduces the labor intensity of clamp replacement, consumes short time, has high efficiency, ensures the production progress, and reduces the production cost of enterprises.
Description
Technical Field
The utility model relates to a turning attachment field especially relates to a quick change primary and secondary anchor clamps.
Background
Machine tools are machines for manufacturing machines, also called machine tools or machine tools, which are conventionally referred to as machine tools for short. Generally, the machining method is divided into a metal cutting machine, a forging machine, a woodworking machine and the like. In modern machine manufacturing, a plurality of methods for machining mechanical parts comprise cutting machining, casting, forging, welding, stamping, extruding and the like, but all parts with higher precision requirements and finer surface roughness requirements are generally subjected to final machining by a cutting method on a machine tool. The machine tool plays an important role in the construction of national economy modernization.
A lathe is a machine tool for turning a rotating workpiece mainly with a lathe tool. The lathe can also be used for corresponding processing by using a drill bit, a reamer, a screw tap, a die, a knurling tool and the like. Lathes are used primarily for machining shafts, discs, sleeves and other workpieces having a surface of revolution, and are the most widely used type of machine tool in machine manufacturing and repair plants.
A chuck in a lathe is an important component for clamping a workpiece in the lathe, the existing chuck generally comprises a chuck body, movable clamping jaws and a clamping jaw driving mechanism, the movable clamping jaws uniformly distributed on the chuck body are used as clamps, and the movable clamping jaws clamp and position the workpiece through radial movement.
With the continuous development of lathe technology and industrial level, products clamped by the existing lathe are also in a diversified and multi-quantitative trend, but because various small-batch workpieces are inevitably encountered in the machining process, the workpieces often need various different clamps, so that according to the machining requirements, workers need to correspondingly replace movable clamping jaws, namely clamps, in a lathe chuck according to the size requirements of the workpieces, so as to adapt to the corresponding sizes of the workpieces; because the movable clamping jaws on the chuck are troublesome to disassemble, the frequency of replacing the clamp is increased when the workpieces of various types and small batches are processed, and the traditional chuck clamp replacing mode has the defects of high labor intensity, long time consumption and low efficiency, so that the whole production progress is influenced, and the production cost of enterprises is increased.
Disclosure of Invention
The utility model aims to solve the technical problem that a quick change primary and secondary anchor clamps that can alternate anchor clamps size fast, conveniently adapt to the quick clamping processing of unidimensional work piece are provided.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme: a quick-change primary and secondary fixture comprises a primary claw which can be fixedly connected with a chuck and a secondary claw which is matched and connected with the primary claw; the bottom of the female claw is provided with a limiting clamping groove, the bottom surfaces of the female claw, which are positioned at two sides of the limiting clamping groove, are provided with limiting teeth, the top of the female claw is sequentially provided with a second clamping opening and a first clamping opening from left to right, and the height of the first clamping opening is lower than that of the second clamping opening and is in a step shape; the tops of the first clamping opening and the second clamping opening are respectively provided with a connecting hole communicated with the bottom of the female jaw, and the female jaw is fixedly connected to the chuck through a bolt matched with the connecting hole; the front surface of the sub-claw is a clamping surface, the back surface of the sub-claw is a back-to-back surface, the back-to-back surface is matched with a bearing surface formed on the left side of the second clamping opening, the sub-claw is fixedly arranged on the second clamping opening, and the back-to-back surface and the bearing surface of the sub-claw are mutually attached together.
Preferably, the second clamping opening is provided with two groups of screw holes, each group of screw holes is composed of two limiting screw holes which are symmetrical with each other in the front and at the back and are formed by taking a connecting hole on the second clamping opening as a center, the top of the secondary jaw is provided with two limiting holes which are communicated up and down, the positions of the limiting holes correspond to the positions of one group of screw holes on the second clamping opening, and the secondary jaw is fixedly connected to the primary jaw through a bolt in threaded fit with the limiting holes and the limiting screw holes.
Preferably, the left side surface of the female claw is provided with a back locking counter bore communicated with the bearing surface, the back surface of the male claw is provided with a back locking screw hole corresponding to the back locking counter bore in position, and the upper part of the male claw is fixedly connected to the female claw through a bolt in threaded fit with the back locking counter bore and the back locking screw hole.
Preferably, the bottom of the sub-claw is provided with a connecting groove with the width matched with the front and back width of the second clamping opening, and the sub-claw is clamped on the second clamping opening through the connecting groove.
Preferably, the bearing surface and the backrest surface are both arc surfaces, and the radian R' of the backrest surface is the same as the radian R of the bearing surface.
Preferably, the connecting hole is a counter-sunk hole.
Preferably, the limiting hole is a counter-sunk hole.
Preferably, the top of the second clamping opening and the bottom of the sub-claw are provided with mutually matched clamping teeth.
Compared with the prior art, the utility model discloses an useful part is: the quick-change primary-secondary clamp takes the primary jaw as the body, can clamp workpieces with corresponding sizes, can be additionally provided with the secondary jaws with different size structures according to the size requirement of the workpieces, has strong adaptability, is convenient to mount and dismount, has good fixing effect, reduces the labor intensity of clamp replacement, consumes short time, has high efficiency, ensures the production progress, and reduces the production cost of enterprises.
Drawings
The present invention will be further explained with reference to the accompanying drawings.
FIG. 1 is a front view of the quick-change primary-secondary clamp jaw of the present invention;
FIG. 2 is a schematic view of the structure of the top surface of the female claw of the quick-change letter fixture of the present invention;
FIG. 3 is a schematic side view of the master jaw of the quick-change master-slave clamp of the present invention;
FIG. 4 is a schematic view of the top surface of the sub-claw of the quick-change primary-secondary clamp of the present invention;
FIG. 5 is a front view of the quick-change primary-secondary clamp of the present invention;
fig. 6 and 7 are schematic views of the assembly structure between the secondary jaw and the primary jaw and the chuck in two different structural configurations.
In the figure: 1. a female claw; 2. limiting teeth; 3. connecting holes; 4. a first nip; 5. a second nip; 6. backing lock counter bores; 7. a limiting screw hole; 8. a bearing surface; 9. a limiting clamping groove; 10. a sub-claw; 11. a limiting hole; 12. a clamping surface; 13. a back lock screw hole; 14. a backrest surface; 15. a joining groove; 16. a chuck.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments:
1-5, the quick-change primary-secondary clamp comprises a primary jaw 1 capable of being fixedly connected with a chuck 16 and a secondary jaw 10 matched with the primary jaw 1; the bottom of the female claw 1 is provided with a limiting clamping groove 9, the bottom surfaces of two sides of the limiting clamping groove 9 are provided with limiting teeth 2, the top of the female claw 1 is sequentially provided with a second clamping opening 5 and a first clamping opening 4 from left to right, and the height of the first clamping opening 4 is lower than that of the second clamping opening 5 and is in a step shape; the top parts of the first clamping opening 4 and the second clamping opening 5 are respectively provided with a connecting hole 3 communicated with the bottom of the female claw 1, and the female claw 1 is fixedly connected to a chuck 16 through a bolt matched with the connecting hole 3; the front surface of the sub-claw 10 is a clamping surface 12, the back surface of the sub-claw is a backrest surface 14, the backrest surface 14 is matched with a bearing surface 8 formed on the left side of the second clamping opening 5, the sub-claw 10 is fixedly installed on the second clamping opening 5, and the backrest surface 14 and the bearing surface 8 are mutually attached together.
In order to facilitate connection and fixation between the sub-claw 10 and the second clamping opening 5, two groups of screw holes are formed in the second clamping opening 5, each group of screw holes is composed of two limiting screw holes 7 which are formed in a front-back symmetrical mode by taking a connecting hole 3 in the second clamping opening 5 as a center, two limiting holes 11 which are communicated up and down are formed in the top of the sub-claw 10, the positions of the limiting holes 11 correspond to the positions of one group of screw holes in the second clamping opening 5, and the sub-claw 10 is fixedly connected to the female claw 1 through bolts in threaded fit with the limiting holes 11 and the limiting screw holes 7.
In order to ensure that the upper structure of the secondary claw 10 is stable after the secondary claw 10 is installed on the second clamping opening 5, a back locking counter bore 6 communicated with a bearing surface 8 is arranged on the left side surface of the primary claw 1, a back locking screw hole 13 corresponding to the back locking counter bore 6 in position is arranged on a back surface 14 of the secondary claw 10, and the upper part of the secondary claw 10 is fixedly connected to the primary claw 1 through a bolt in threaded fit with the back locking counter bore 6 and the back locking screw hole 13.
In order to ensure that the sub-claws 10 are not easy to shift on the second clamping opening 5 longitudinally, the bottom of the sub-claws 10 is provided with linking grooves 15 with the width matched with the front and back width of the second clamping opening 5, and the sub-claws 10 are clamped on the second clamping opening 5 through the linking grooves 15.
In order to ensure that the backrest surface 14 can be attached to the bearing surface 8 to form pressure abutment, the bearing surface 8 and the backrest surface 14 are both arc surfaces, and the radian R' of the backrest surface 14 is the same as the radian R of the bearing surface 8.
In order to ensure that the head of the bolt is not exposed outside and assembly processing is influenced, the connecting hole 3 and the limiting hole 11 are both countersunk holes.
In order to prevent the sub-jaw 10 from laterally shifting on the second jaw 5, the top of the second jaw 5 and the bottom of the sub-jaw 10 are provided with mutually matched latch teeth.
Referring to fig. 6 and 7, the sub-claws 10 can be divided into two types according to the diameter of the clamping surface 12, for the sub-claw 10 with the larger diameter of the clamping surface 12, the position of the limiting hole 11 on the sub-claw 10 corresponds to the position of the limiting screw hole 7 on the second clamping opening 5 near the bearing surface 8, and for the sub-claw 10 with the smaller diameter of the clamping surface 12, the position of the limiting hole 11 on the sub-claw 10 corresponds to the position of the limiting screw hole 7 on the second clamping opening 5 near the first clamping opening 4.
The installation mode is as follows: as shown in fig. 6 and 7, the limiting clamping groove 9 on the female claw 1 is slidably clamped on the chuck 16, the limiting tooth 2 at the bottom of the female claw 1 is correspondingly clamped with the limiting tooth on the chuck 16, and then the female claw 1 is bolted on the chuck 16 by a countersunk head bolt penetrating through the connecting hole 3 on the female claw 1; according to the size requirement of a workpiece, a sub-claw 10 is installed on a second clamping opening 5 on a female claw 1, a connecting groove 15 at the bottom of the sub-claw 10 is clamped on the second clamping opening 5, a backrest surface 14 is precisely attached to a bearing surface 8, then a back locking screw hole 13 at the upper part of the sub-claw 10 is connected with a back locking counter bore 6 on the female claw 1 through a corresponding countersunk head bolt, the corresponding limiting hole 11 and the corresponding limiting screw hole 7 are connected together through the corresponding countersunk head bolt according to the limiting screw hole 7 on the second clamping opening 5 corresponding to the limiting hole 11 on the sub-claw 10, so that the sub-claw 10 is transversely and longitudinally fixed on the female claw 1, and the transverse position of the pillar claw 10 on the female claw 1 can be further fixed through clamping teeth which are matched with each other and are arranged at the top of the second clamping opening 5 and the bottom of the sub-claw 10, so that the stability of the sub-claw is ensured.
Compared with the prior art, the utility model discloses an useful part is: this kind of quick change primary and secondary anchor clamps uses female claw 1 as the body, can the corresponding size of centre gripping work piece, according to the requirement of work piece size, can add the sub-claw 10 of different size structures on the female claw 1 again, strong adaptability, the installation is dismantled more conveniently, and fixed effectual, has reduced the intensity of labour that anchor clamps were changed, weak point consuming time, and efficiency is fast, has guaranteed the production progress to the manufacturing cost of enterprise has been reduced.
It is to be emphasized that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form, and any simple modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.
Claims (8)
1. The utility model provides a quick change primary and secondary anchor clamps which characterized in that: the clamping device comprises a female claw (1) which can be fixedly connected with a chuck (16) and a male claw (10) which is matched and connected with the female claw (1); the bottom of the female claw (1) is provided with a limiting clamping groove (9), the bottom surfaces of two sides of the limiting clamping groove (9) are provided with limiting teeth (2), the top of the female claw (1) is sequentially provided with a second clamping opening (5) and a first clamping opening (4) from left to right, and the height of the first clamping opening (4) is lower than that of the second clamping opening (5) and is in a step shape; the top parts of the first clamping opening (4) and the second clamping opening (5) are respectively provided with a connecting hole (3) communicated with the bottom of the female claw (1), and the female claw (1) is fixedly connected to the chuck (16) through a bolt matched with the connecting hole (3); the front surface of the sub-claw (10) is a clamping surface (12), the back surface of the sub-claw is a backrest surface (14), the backrest surface (14) is matched with a bearing surface (8) formed on the left side of the second clamping opening (5), the sub-claw (10) is fixedly installed on the second clamping opening (5), and the backrest surface (14) and the bearing surface (8) are mutually attached together.
2. The quick-change primary-secondary clamp according to claim 1, characterized in that: the second is provided with two sets of screws on pressing from both sides mouthful (5), and every group screw is by two with the second press from both sides connecting hole (3) and form spacing screw (7) of mutual symmetry around forming as the center, the top of sub-claw (10) is provided with spacing hole (11) of two upper and lower intercommunications, the position of spacing hole (11) corresponds the position of one of them set of screw on second presss from both sides mouthful (5), sub-claw (10) through with spacing hole (11) and spacing screw (7) screw-thread fit's bolt fixed connection on female claw (1).
3. The quick-change primary-secondary clamp according to claim 1, characterized in that: the left side face of female claw (1) is provided with and holds communicating back lock counter bore (6) of leaning on face (8), be provided with back lock screw hole (13) that the position corresponds each other with back lock counter bore (6) on back of back face (14) of sub-claw (10), the upper portion of sub-claw (10) is through the bolt fixed connection on female claw (1) with back lock counter bore (6) and back lock screw hole (13) screw-thread fit.
4. The quick-change primary-secondary clamp according to claim 1, characterized in that: the bottom of the sub-claw (10) is provided with a linking groove (15) with the width matched with the front and back width of the second clamping opening (5), and the sub-claw (10) is clamped on the second clamping opening (5) through the linking groove (15).
5. The quick-change primary-secondary clamp according to claim 1, characterized in that: the bearing surface (8) and the backrest surface (14) are both arc surfaces, and the radian R' of the backrest surface (14) is the same as the radian R of the bearing surface (8).
6. The quick-change primary-secondary clamp according to claim 1, characterized in that: the connecting hole (3) is a counter bore.
7. The quick-change primary-secondary clamp according to claim 2, characterized in that: the limiting hole (11) is a counter bore.
8. The quick-change primary-secondary clamp according to claim 1, characterized in that: the top of the second clamping opening (5) and the bottom of the sub-claw (10) are provided with mutually matched clamping teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921981432.XU CN211758559U (en) | 2019-11-18 | 2019-11-18 | Quick-change primary and secondary fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921981432.XU CN211758559U (en) | 2019-11-18 | 2019-11-18 | Quick-change primary and secondary fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211758559U true CN211758559U (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921981432.XU Active CN211758559U (en) | 2019-11-18 | 2019-11-18 | Quick-change primary and secondary fixture |
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| CN (1) | CN211758559U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112719328A (en) * | 2020-12-22 | 2021-04-30 | 上海纳错机械制造厂 | Modularization step chuck |
-
2019
- 2019-11-18 CN CN201921981432.XU patent/CN211758559U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112719328A (en) * | 2020-12-22 | 2021-04-30 | 上海纳错机械制造厂 | Modularization step chuck |
| CN112719328B (en) * | 2020-12-22 | 2024-04-12 | 上海纳错机械制造厂 | Modularized step chuck |
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