CN202922277U - Lever-driven self-centering hydraulic clamp - Google Patents

Lever-driven self-centering hydraulic clamp Download PDF

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Publication number
CN202922277U
CN202922277U CN 201220618799 CN201220618799U CN202922277U CN 202922277 U CN202922277 U CN 202922277U CN 201220618799 CN201220618799 CN 201220618799 CN 201220618799 U CN201220618799 U CN 201220618799U CN 202922277 U CN202922277 U CN 202922277U
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China
Prior art keywords
clamp
lever
oil cylinder
fixed
piston
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Active
Application number
CN 201220618799
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Chinese (zh)
Inventor
刘大元
谢德山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuxi Best Precise Machine Co., Ltd.
Original Assignee
WUXI BEST PRECISIION MACHINERY CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Priority to CN 201220618799 priority Critical patent/CN202922277U/en
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Publication of CN202922277U publication Critical patent/CN202922277U/en
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Abstract

The utility model relates to a lever-driven self-centering hydraulic clamp, which comprises a clamp body, wherein at least three T-shaped blocks capable of sliding radially are uniformly distributed on the clamp body; a jack catch is fixed on each T-shaped block; a linear oil cylinder of which a piston rod extends downwards is fixed in the center of the clamp body; a rod is fixed on the piston rod of the linear oil cylinder; a piston is arranged on the rod; the piston is in slide fit in a vertical through hole in the center of the clamp body; a lever is arranged between the piston and each T-shaped block; and each lever is hinged on the clamp body. According to the lever-driven self-centering hydraulic clamp, the jack catches are driven to move radially by adopting the linear oil cylinder and a lever mechanism, so that a clamping force transmission process is stable, the clamping force is controllable, reliable clamping is realized; and the jack catches can be conveniently replaced optionally according to different parts, so that circular and special-shaped workpieces of various sizes and shapes can be effectively clamped.

Description

Lever drive formula self-centering hydraulic pressure fixture
Technical field
The utility model relates to frock clamp, specifically a kind of lever drive formula self-centering hydraulic pressure fixture.
Background technology
Along with the development of processing center machine tool with to the improving constantly of auto parts and components technological requirement, the requirement of part fixture is also improved constantly.
In prior art,, clamping force shorter for setting circle length requires larger round piece, is all the self-centering fixture that adopts similar scroll chuck formula structure usually, and this fixture needs special customized, and difficulty is larger, and is customized with high costs.In addition, traditional scroll chuck fixture is all three-jaw or four paws usually, just can not clamping for those special-shaped workpieces (not being full circle).
Summary of the invention
The utility model provides a kind of lever drive formula self-centering hydraulic pressure fixture for the problems referred to above, and this fixture is clamping various sizes and different circle and special-shaped workpiece effectively, guarantees that the clamping in the process of processing of these parts is accurate, firmly.
according to the technical solution of the utility model: a kind of lever drive formula self-centering hydraulic pressure fixture, comprise clamp body, be evenly equipped with at least three T-shaped of can radially slide on described clamp body, be fixed with claw on each described T-shaped, the center of described clamp body is fixed with the linear oil cylinder that piston rod stretches out downwards, be fixed with bar on the piston rod of described linear oil cylinder, on described bar, piston is installed, described piston is slidably fitted in the vertical through holes at described clamp body center, between described piston and each described T-shaped, lever is installed, each described lever is hinged on described clamp body.
In described T-shaped T-shaped groove that is slidably fitted on described clamp body.
The lower end of the vertical through holes at described clamp body center is fixed with centring ring.
Described linear oil cylinder is fixed on cylinder installation seat, and described cylinder installation seat is fixed on the top of the vertical through holes at described clamp body center.
The top of described linear oil cylinder is fixed with oil cylinder cover.
Each outer end of described T-shaped is provided with projection upwards, and the adjustment screw of regulating described claw radial position is installed on described projection.
Between described projection and described claw, adjusting pad is installed.
Be evenly equipped with the angle positioner identical with described claw quantity on described clamp body.
Be evenly equipped with the rotatably compress oil cylinder identical with described claw quantity on described clamp body.
Technique effect of the present utility model is: the utility model adopts linear oil cylinder and leverage to handle claw and moves radially, and the clamping force transmittance process is stable, chucking power big or small controlled, and clamping is reliable; Claw can be changed arbitrarily according to different parts easily, effectively clamping various sizes and different circle and special-shaped workpiece.
Description of drawings
Fig. 1 is structural representation of the present utility model, is the A-A cutaway view in Fig. 2.
Fig. 2 is the top view of Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is further described.
In Fig. 1, Fig. 2, comprise rotatably compressing oil cylinder 1, angle positioner 2, linear oil cylinder 3, oil cylinder cover 4, cylinder installation seat 5, claw 6, T-shaped 7, lever 8, axle 9, bar 10, piston 11, centring ring 12, clamp body 13, adjustment screw 14, projection 15, adjusting pad 16 etc.
As shown in Figure 1 and Figure 2, the utility model is a kind of lever drive formula self-centering hydraulic pressure fixture, comprise clamp body 13, the center of clamp body 13 is provided with vertical through holes, clamp body 13 end face on be evenly equipped with at least three T-shaped grooves that radially extend, be sliding combined with T-shaped 7 that to radially slide in each T-shaped groove, be fixed with claw 6 on each T-shaped 7.Each outer end of T-shaped 7 is provided with projection 15 upwards, and the adjustment screw 14 of regulating claw 6 radial positions is installed on projection 15.Between projection 15 and claw 6, adjusting pad 16 is installed.
The center of clamp body 13 is fixed with the linear oil cylinder 3 that piston rod stretches out downwards, and linear oil cylinder 3 is fixed on cylinder installation seat 5, and cylinder installation seat 5 is fixed on the top of the vertical through holes at clamp body 13 centers.The top of linear oil cylinder 3 is fixed with oil cylinder cover 4, can protect linear oil cylinder 3.
Be fixed with bar 10 on the piston rod of linear oil cylinder 3, piston 11 is installed on bar 10, piston 11 is slidably fitted in the vertical through holes at clamp body 13 centers, and the lower end of the vertical through holes at clamp body 13 centers is fixed with centring ring 12, and centring ring 12 can be positioned at clamp body 13 on the workbench of lathe.
Between piston 11 and each T-shaped 7, lever 8 is installed, lever 8 is for approximate L shaped, and each lever 8 is hinged on clamp body 13 by axle 9.The two ends of lever 8 are separately fixed at outer wall and each bottom of T-shaped 7 of piston 11.
Also be evenly equipped with the angle positioner 2 identical with claw 6 quantity on clamp body 13 and rotatably compress oil cylinder 1.Rotatably compress oil cylinder 1 and realize that workpiece locates later compression, angle positioner 2 is realized the angle location of workpiece in the self-centering process.
Operation principle of the present utility model and the course of work are as follows: the moving up and down by passing to lever 8 by moving up and down of bar 10 and piston 11 of linear oil cylinder 3 piston rods, and be converted to the radial alignment motion of claw 6 by lever 8, thereby realize the self-centering clamping of workpiece.
The utlity model has following advantage: 1, adopt linear oil cylinder 3 to guarantee the big or small controlled of chucking power; 2, claw 6 can be changed arbitrarily according to different parts easily; 3, leverage guarantees the stable of clamping force transmittance process; 4, simple and reliable for structure, easy to maintenance.

Claims (9)

1. lever drive formula self-centering hydraulic pressure fixture, comprise clamp body (13), it is characterized in that: be evenly equipped with at least three T-shaped (7) that can radially slide on described clamp body (13), be fixed with claw (6) on each described T-shaped (7), the center of described clamp body (13) is fixed with the linear oil cylinder (3) that piston rod stretches out downwards, be fixed with bar (10) on the piston rod of described linear oil cylinder (3), piston (11) is installed on described bar (10), described piston (11) is slidably fitted in the vertical through holes at described clamp body (13) center, between described piston (11) and each described T-shaped (7), lever (8) is installed, each described lever (8) is hinged on described clamp body (13).
2. according to lever drive formula self-centering hydraulic pressure fixture claimed in claim 1, it is characterized in that: described T-shaped (7) are slidably fitted in T-shaped groove on described clamp body (13).
3. according to lever drive formula self-centering hydraulic pressure fixture claimed in claim 1, it is characterized in that: the lower end of the vertical through holes at described clamp body (13) center is fixed with centring ring (12).
4. according to lever drive formula self-centering hydraulic pressure fixture claimed in claim 1, it is characterized in that: described linear oil cylinder (3) is fixed on cylinder installation seat (5), and described cylinder installation seat (5) is fixed on the top of the vertical through holes at described clamp body (13) center.
5. according to lever drive formula self-centering hydraulic pressure fixture claimed in claim 1, it is characterized in that: the top of described linear oil cylinder (3) is fixed with oil cylinder cover (4).
6. according to lever drive formula self-centering hydraulic pressure fixture claimed in claim 1, it is characterized in that: the outer end of each described T-shaped (7) is provided with projection (15) upwards, and the adjustment screw (14) of regulating described claw (6) radial position is installed on described projection (15).
7. according to lever drive formula self-centering hydraulic pressure fixture claimed in claim 6, it is characterized in that: between described projection (15) and described claw (6), adjusting pad (16) is installed.
8. according to lever drive formula self-centering hydraulic pressure fixture claimed in claim 1, it is characterized in that: be evenly equipped with the angle positioner (2) identical with described claw (6) quantity on described clamp body (13).
9. according to lever drive formula self-centering hydraulic pressure fixture claimed in claim 1, it is characterized in that: be evenly equipped with identical with described claw (6) the quantity oil cylinder (1) that rotatably compresses on described clamp body (13).
CN 201220618799 2012-11-21 2012-11-21 Lever-driven self-centering hydraulic clamp Active CN202922277U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220618799 CN202922277U (en) 2012-11-21 2012-11-21 Lever-driven self-centering hydraulic clamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220618799 CN202922277U (en) 2012-11-21 2012-11-21 Lever-driven self-centering hydraulic clamp

Publications (1)

Publication Number Publication Date
CN202922277U true CN202922277U (en) 2013-05-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220618799 Active CN202922277U (en) 2012-11-21 2012-11-21 Lever-driven self-centering hydraulic clamp

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CN (1) CN202922277U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106271789A (en) * 2016-10-26 2017-01-04 昆山勇翔精密机械有限公司 Rocker box turning attachment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106271789A (en) * 2016-10-26 2017-01-04 昆山勇翔精密机械有限公司 Rocker box turning attachment

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GR01 Patent grant
C14 Grant of patent or utility model
CP03 Change of name, title or address

Address after: 214028 801-2702, Binhu District, Binhu District, Jiangsu, Wuxi

Patentee after: Wuxi Best Precise Machine Co., Ltd.

Address before: 214161 lakes in Jiangsu province Wuxi City foreshore Hu Dai Industrial Park extension Xinke Road No. 18 two

Patentee before: Wuxi Best Precisiion Machinery Co., Ltd.

C56 Change in the name or address of the patentee

Owner name: WUXI BEST PRECISE MACHINE CO., LTD.

Free format text: FORMER NAME: WUXI BEISITE PRECISION MACHINERY CO., LTD.