CN204545903U - Self-centering fixture - Google Patents
Self-centering fixture Download PDFInfo
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- CN204545903U CN204545903U CN201520097043.6U CN201520097043U CN204545903U CN 204545903 U CN204545903 U CN 204545903U CN 201520097043 U CN201520097043 U CN 201520097043U CN 204545903 U CN204545903 U CN 204545903U
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- hood
- gripper shoe
- shift fork
- shaped support
- fixture
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Abstract
The utility model relates to a kind of self-centering fixture.Comprise gripper shoe, be characterized in that gripper shoe has slot, support plate upper surface has the hood-shaped support that can cover slot.Near between the two side at hood-shaped support two, all have bearing pin, bearing pin all has shift fork, and described shift fork all has two shifting blocks.Hood-shaped cradle top has hydraulic cylinder, and the piston rod of hydraulic cylinder to stretch in hood-shaped support and is connected with pull bar.Both sides, pull bar lower end are all fluted, and a pair shifting block that two shift forks are relative stretches in corresponding recesses respectively.Have two pieces of slide plates below gripper shoe, two pieces of slide plates all have pulling hole, two shifting blocks of two another homonymies of shift fork insert in corresponding pulling hole respectively.All be connected with fixture block below slide plate, the proximal surface of two fixture blocks all has V-arrangement jaws, the oral area of described V-arrangement jaws is positioned opposite.Adopt the utility model, do not need to adjust Clamping Center, can greatly enhance productivity.Be applicable to clamping that is shaft-like or tubular workpiece.
Description
Technical field
The utility model relates to a kind of fixture.Specifically, be used to the self-centering fixture clamping workpiece to be machined, be particularly useful for the clamping to shaft-like or tubular workpiece on automatic assembly line.
Background technology
All know at mechanical processing industry, on some automatic assembly lines, fixture need be adopted to be fixed shaft-like or tubular workpiece.Traditional fixture is included in support side and arranges a fixed clamp block, the dynamic fixture block of a dependence actuating unit promotion is set at the offside of clamp block again, promote dynamic fixture block by actuating unit, shaft-like or tubular workpiece can be realized to be clamped between clamp block and dynamic fixture block.Because the actuating unit of above-mentioned fixture by clamp block, dynamic fixture block and the dynamic fixture block of promotion forms, clamp block is in the state of maintaining static all the time, and only have dynamic fixture block in motion, when after the shaft-like or tubular workpiece assembling completing a kind of specification (a kind of diameter), when more shaft-like the or tubular workpiece of another kind of specification (another kind of diameter) being assembled, just need to unload clamp block to adjust Clamping Center, and the adjustment of Clamping Center is very difficult.Therefore, adopt above-mentioned fixture to clamp the shaft-like of different size or tubular workpiece, not only Clamping Center is aimed at more difficult, and production efficiency is low.
Utility model content
Problem to be solved in the utility model is to provide a kind of self-centering fixture.Adopt this fixture to clamp the shaft-like of different size or tubular workpiece, do not need to adjust Clamping Center, can greatly enhance productivity.
The problems referred to above to be solved in the utility model are realized by following technical scheme:
Self-centering fixture of the present utility model comprises gripper shoe, is characterized in that gripper shoe has slot, support plate upper surface has the hood-shaped support that can cover slot.On the two side at hood-shaped support two, all there is axis hole, between relative two side axis hole, all have bearing pin, described two bearing pins all have the shift fork that can rotate around bearing pin.There is hydraulic cylinder at hood-shaped cradle top center, and down and stretch in hood-shaped support, described piston-rod lower end is connected with pull bar to the piston rod of hydraulic cylinder.Described shift fork all has two shifting blocks, and the angle between two shifting blocks on same shift fork is less than 90 degree.Both sides, pull bar lower end are all fluted, and the shifting block that described two shift forks are relative stretches in the corresponding recesses of pull bar lower end in moving type respectively.Have two pieces of slide plates that can slide along gripper shoe face below gripper shoe, the glide direction of described slide plate and the axis of bearing pin are perpendicular, and two pieces of slide plates all have pulling hole, and two shifting blocks of two another homonymies of shift fork are that slip shape inserts in corresponding pulling hole respectively.All be connected with fixture block below described slide plate, the proximal surface of two fixture blocks all has V-arrangement jaws, the oral area of described V-arrangement jaws is positioned opposite.
Wherein, all there is lower chimb on the longitudinal both sides of lower surface of two gripper shoes, and the following of twice chimbs all has internal projection.All there is cannelure the both sides of two pieces of slide plate its upper surfaces contiguous, in being slidably matched between described cannelure and described internal projection.
As can be seen from the above scheme, due to gripper shoe having slot, support plate upper surface there are the vertical projection that can cover slot and the suitable hood-shaped support of slot.On the two side at hood-shaped support two, all there is axis hole, between relative two side axis hole, all have bearing pin, two bearing pins all have the shift fork that can rotate around bearing pin.Hood-shaped support has hydraulic cylinder, and down and stretch in hood-shaped support, and piston-rod lower end is connected with pull bar to the piston rod of hydraulic cylinder.Described shift fork all has two shifting blocks, and the angle between two shifting blocks on same shift fork is less than 90 degree.Both sides, pull bar lower end are all fluted, and the shifting block of described two shift fork homonymies stretches in the corresponding recesses of pull bar lower end in moving type respectively.Two pieces of slide plates that can slide along gripper shoe face are had below gripper shoe, the glide direction of described slide plate and the axis of described bearing pin perpendicular, two pieces of slide plates all have pulling hole, and two shifting blocks of two another homonymies of shift fork insert in the pulling hole on two pieces of slide plates in slip shape respectively.All fixture block is connected with below described slide plate.During work, inside contracting by hydraulic cylinder piston rod, pull bar can be driven to move up together, again by pull bar drive two shift forks respectively around corresponding bearing pin to inner rotary, and then to be driven together with two pieces of slide plates by the shifting block of two the shift fork homonymies be connected with two slide plates and inwardly slide, two fixture blocks be connected with slide plate are inwardly closed up, until realize clamping that is shaft-like or tubular workpiece.Otherwise, overhanging by hydraulic cylinder piston rod, stretch under can driving pull bar, two shift forks are driven inwardly to rotate around corresponding bearing pin respectively by pull bar again, and then to be driven together with two pieces of slide plates by the shifting block of two the shift fork homonymies be connected with two slide plates and outwards slide, two fixture blocks be connected with slide plate are outwards separated, relieves the clamping to shaft-like or tubular workpiece.As can be seen here; no matter be that shaft-like or tubular workpiece are clamped or removed clamping that is shaft-like or tubular workpiece; two fixture blocks are all inwardly close up or outwards separate simultaneously; the utility model is just determined its Clamping Center after finalization of the manufacture, avoids in use procedure afterwards the trouble and difficulty that need to adjust Clamping Center.Do not need to adjust Clamping Center due in use procedure afterwards again, no matter clamp the shaft-like or tubular workpiece of any specification (diameter), do not need to regulate Clamping Center, compared with background technology, can greatly enhance productivity.
Accompanying drawing explanation
Fig. 1 is self-centering fixture structural representation of the present utility model;
Fig. 2 is the A-A cross-sectional schematic of Fig. 1, and two fixture blocks are wherein in closed configuration and are clamped with workpiece;
Fig. 3 is the A-A cross-sectional schematic of Fig. 1, and two fixture blocks are wherein in separated position.
Detailed description of the invention
As shown in Figure 1, Figure 2 and Figure 3, self-centering fixture of the present utility model comprises gripper shoe 3, gripper shoe 3 is processed with slot 8.Gripper shoe 3 upper surface is provided with hood-shaped support 2, and the oral area of hood-shaped support 2 is fixed on the surrounding of slot 8.On the two side at hood-shaped support 2 two, be all processed with axis hole, between relative two side axis hole, bearing pin 9 be all installed, described two bearing pins 9 are all provided with the shift fork 13 that can rotate around bearing pin 9.Hood-shaped support 2 top center is provided with hydraulic cylinder 1, and down and stretch in hood-shaped support 2, described piston rod 10 lower end is connected with pull bar 11 to the piston rod 10 of hydraulic cylinder 1.
Described shift fork 13 is all containing two shifting blocks 14, and the angle between two shifting blocks 14 on same shift fork 13 is less than 90 degree.Both sides, pull bar 11 lower end are all processed with groove 12, and a pair shifting block 14 that described two shift forks 13 are relative stretches in a pair groove 12 of pull bar 11 lower end in moving type respectively.Gripper shoe 3 is provided with two pieces of slide plates 5 that can slide along gripper shoe 3 below, the glide direction of described slide plate 5 and the axis of bearing pin 9 perpendicular, two pieces of slide plates 5 are all processed with pulling hole 7, two shift forks 13 another relative shifting block 14 is inserted in corresponding pulling hole 7 in slip shape respectively.Described slide plate 5 is all connected with fixture block 15 below, and the proximal surface of two fixture blocks 15 is all processed with V-arrangement jaws 16, and the oral area of described V-arrangement jaws 16 is positioned opposite.
Wherein, the longitudinal both sides of the lower surface of two gripper shoes 3 are all processed with the following of lower chimb 4, twice chimbs 4 and are all processed with internal projection 6.The both sides of two pieces of slide plate 5 its upper surfaces contiguous are all processed with cannelure, in being slidably matched between described cannelure and described internal projection 6.
During work, by inside contracting of the piston rod 10 of hydraulic cylinder 1, pull bar 11 can be driven to move up together, again by pull bar 11 drive two shift forks 13 respectively around corresponding bearing pin 9 to inner rotary, and then to be driven together with two pieces of slide plates 5 by the shifting block 14 of two shift fork 13 homonymies be connected with two slide plates 5 and inwardly slide, two fixture blocks 15 be connected with slide plate 5 are inwardly closed up, until realize clamping that is shaft-like or tubular workpiece 17, sees Fig. 2.Otherwise, overhanging by the piston rod 10 of hydraulic cylinder 1, pull bar can be driven to stretch for 11 times, two shift forks 13 are driven inwardly to rotate around corresponding bearing pin 9 respectively by pull bar 11 again, and then to be driven together with two pieces of slide plates 5 by the shifting block 14 of two shift fork 13 homonymies be connected with two slide plates 5 and outwards slide, two fixture blocks 15 be connected with slide plate 5 are outwards separated, relieves clamping that is shaft-like or tubular workpiece 17, see Fig. 3.
Claims (2)
1. self-centering fixture, comprises gripper shoe (3), it is characterized in that gripper shoe (3) has slot (8), gripper shoe (3) upper surface has the hood-shaped support (2) that can cover slot (8); On the two side at hood-shaped support (2) two, all there is axis hole, all have bearing pin (9) between relative two side axis hole, described two bearing pins (9) all have the shift fork (13) that can rotate around bearing pin (9); Hood-shaped support (2) top center has hydraulic cylinder (1), and down and stretch in hood-shaped support (2), described piston rod (10) lower end is connected with pull bar (11) to the piston rod (10) of hydraulic cylinder (1); Described shift fork (13) all has two shifting blocks (14), and the angle between two shifting blocks on same shift fork is less than 90 degree; Pull bar (11) both sides, lower end all fluted (12), relative a pair shifting block (14) of described two shift forks (13) stretches in the corresponding recesses (12) of pull bar (11) lower end in moving type respectively, gripper shoe (3) has the two pieces of slide plates (5) can slided along gripper shoe (3) below, the glide direction of described slide plate (5) and the axis of bearing pin (9) perpendicular, two pieces of slide plates (5) all have pulling hole (7), and a pair shifting block of two another homonymies of shift fork (13) inserts in corresponding pulling hole (7) in slip shape respectively; Described slide plate (5) is all connected with fixture block (15) below, and the proximal surface of two fixture blocks (15) all has V-arrangement jaws (16), the oral area of described V-arrangement jaws (16) is positioned opposite.
2. self-centering fixture according to claim 1, it is characterized in that all there is lower chimb (4) on the longitudinal both sides of the lower surface of two gripper shoes (3), the following of twice chimbs (4) all has internal projection (6); All there is cannelure the both sides of two pieces of slide plate (5) its upper surfaces contiguous, in being slidably matched between described cannelure and described internal projection (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520097043.6U CN204545903U (en) | 2015-02-11 | 2015-02-11 | Self-centering fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520097043.6U CN204545903U (en) | 2015-02-11 | 2015-02-11 | Self-centering fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204545903U true CN204545903U (en) | 2015-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520097043.6U Active CN204545903U (en) | 2015-02-11 | 2015-02-11 | Self-centering fixture |
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| Country | Link |
|---|---|
| CN (1) | CN204545903U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104647024A (en) * | 2015-02-11 | 2015-05-27 | 无锡惠发特精密机械有限公司 | Self-centering fixture |
-
2015
- 2015-02-11 CN CN201520097043.6U patent/CN204545903U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104647024A (en) * | 2015-02-11 | 2015-05-27 | 无锡惠发特精密机械有限公司 | Self-centering fixture |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |