CN201799947U - High-precision clamping apparatus - Google Patents
High-precision clamping apparatus Download PDFInfo
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- CN201799947U CN201799947U CN201020154183XU CN201020154183U CN201799947U CN 201799947 U CN201799947 U CN 201799947U CN 201020154183X U CN201020154183X U CN 201020154183XU CN 201020154183 U CN201020154183 U CN 201020154183U CN 201799947 U CN201799947 U CN 201799947U
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- pull bar
- elastic opening
- cylinder
- positioning
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Abstract
The utility model belongs to the field of clamping apparatuses, particularly relates to a high-precision clamping apparatus mainly applied to a box body and a support type part for positioning and clamping of one plane and two holes, and solves the problems existing in the prior art that a positioning error is caused due to the non-unified positioning reference, and the structures of a positioning element and a clamping element are not compact. The high-precision clamping apparatus comprises a supporting plate, a cylindrical elastic opening sleeve and a cutting-edge elastic opening sleeve; a workpiece is arranged on the supporting plate, wherein two positioning holes are formed on the workpiece respectively, and two holes corresponding to the positioning holes on the workpiece are formed on the supporting plate respectively; one end of the cylindrical elastic opening sleeve is inserted into a hole of the supporting plate, and the other end of the cylindrical elastic opening sleeve is placed into a positioning hole of the workpiece; and one end of the cutting-edge elastic opening sleeve is inserted into the other hole of the supporting plate, and the other end of the cutting-edge elastic opening sleeve is placed into the other positioning hole of the workpiece. Both the traditional positioning cylindrical pin and rhombus pin are replaced by the elastic opening sleeves, so that the high-precision clamping apparatus is high in positioning accuracy, integrates the positioning and the clamping and is suitable for serving as a traveling clamping apparatus for a production line.
Description
Technical field:
The utility model relates to the anchor clamps field, is specially a kind of location that is mainly used in casing, support class part and clamps incorporate high-accuracy clamp.
Background technology:
When machining box, support class part, plane of workpiece commonly used and on two holes as the location benchmark, so that unifying datum, i.e. Position with One Plane and Two Holes location.
Shown in Fig. 1 (a)-(b), traditional Position with One Plane and Two Holes positioning and clamping structure comprises pressing plate 11, workpiece 12, straight pin 13, locating hole (O
1) 14, workpiece bottom 15, gripper shoe 16, rhombus pin 17, locating hole (O
2) 18, specific as follows: workpiece 12 is arranged on the gripper shoe 16, offers two locating holes on workpiece 12: locating hole (O
1) 14 and locating hole (O
2) 18.Place locating hole (O
1) straight pin 13 in 14 is installed on the gripper shoe 16, a location as workpiece 12 places locating hole (O
2) rhombus pin 17 in 18 is installed on the gripper shoe 16, as another location of workpiece 12, workpiece bottom 15 is as the first location benchmark, and two ends, workpiece 12 top are pushed down by pressing plate 11.
Adopt the Position with One Plane and Two Holes location to be easy to accomplish and unifying datum in the technical process guarantee the relative positional accuracy of workpiece, and have that bearing-surface is big, supporting rigidity good, simple in structure, reliable, characteristics such as workpiece loading and unloading is convenient.Workpiece is located in anchor clamps, does not have the reference position error as first workpiece bottom of locating benchmark, but as second, third location datum hole O
1, O
2Must consider with the benchmark site error that cooperates of alignment pin.
Shown in Fig. 2 (a)-(b), cooperate the benchmark site error to be divided into two kinds of basis displacement sum of errors angular errors, δ
D1-locating hole O
1Tolerance; δ
D1The tolerance of-straight pin; X
1-O
1The fit clearance of hole and straight pin; δ
D2-locating hole O
2Tolerance; δ
D2The tolerance of-rhombus pin; X
2-O
2The fit clearance of hole and rhombus pin; L-O
1, O
2Distance between two holes.Want to reduce basis displacement sum of errors hard-over error, key is to reduce: workpiece locating hole O
1Tolerance δ
D1, the tolerance δ of straight pin on the anchor clamps
D1, workpiece locating hole O
1Fit clearance X with straight pin
1, workpiece locating hole O
2Tolerance δ
D2, the tolerance δ of rhombus pin on the anchor clamps
D2, workpiece locating hole O
2Fit clearance X with the rhombus pin
2And increase O
1, O
2Distance L between two holes.But the tolerance that reduces the tolerance of locating hole and pin is subject to processing the restriction of precision, and is very difficult; Reduce fit clearance X
1And X
2Can bring difficulty to workpiece loading and unloading, also infeasible, and increase the restriction that L is subjected to workpiece or clamp structure.
In sum, there is following shortcoming in traditional Position with One Plane and Two Holes integrated positioning:
The first, matched in clearance causes position error;
The second, setting element separates with clamping element, and structure is not compact, and element is many;
The 3rd, location and clamping are successively carried out, and promptly locate afterwards earlier to clamp.
The utility model content:
Problems such as the purpose of this utility model is to provide a kind of high-accuracy clamp, and position error, setting element and the clamping element structure that the benchmark disunity that exists in the solution prior art causes is not compact.
The technical solution of the utility model is:
A kind of high-accuracy clamp, these anchor clamps are provided with gripper shoe, cylindrical elastomer opening sleeve and chamfered edge elastic opening cover, and gripper shoe is provided with workpiece, have on the workpiece to establish two locating holes, are offering two holes corresponding with locating hole on the workpiece on the gripper shoe; One end of cylindrical elastomer opening sleeve inserts in the hole of gripper shoe, and the other end of cylindrical elastomer opening sleeve places a locating hole of workpiece; One end of chamfered edge elastic opening cover inserts in another hole of gripper shoe, and the other end of chamfered edge elastic opening cover places another locating hole of workpiece.
Described anchor clamps, the top of cylindrical elastomer opening sleeve is that flexure strip concentric more than three constitutes, the inboard of flexure strip is an inner conical surface, the bottom of cylindrical elastomer opening sleeve is a cylinder, be fitted with pull bar in the cylindrical elastomer opening sleeve, the male cone (strobilus masculinus) that the pull bar outer surface of upper is with the flexure strip inner conical surface cooperates, tapering is identical, the bottom of pull bar extends outside the gripper shoe, and the external part of pull bar connects power section.
Described anchor clamps, the top of chamfered edge elastic opening cover is that the flexure strip of two symmetries constitutes, the inboard of flexure strip is an inner conical surface, the bottom of chamfered edge elastic opening cover is a cylinder, be fitted with pull bar in the chamfered edge elastic opening cover, the male cone (strobilus masculinus) that the pull bar outer surface of upper is with the flexure strip inner conical surface cooperates, tapering is identical, the bottom of pull bar extends outside the gripper shoe, and the external part of pull bar connects power section.
Described anchor clamps, hydraulic drive or pneumatic gearing structure are adopted in power section.
Described anchor clamps, the pneumatic gearing structure comprises cylinder, lever, and cylinder is arranged on the air cylinder fixed plate, and the cylinder top connects lever, and the pull bar of elastic opening cover is connected on the lever.
Described anchor clamps, the pneumatic circuit of pneumatic gearing structure comprises: source of the gas, filtering pressure reducing valve, oil sprayer, two the electric reversal valves of five-way, one-way throttle valve I, cylinder and one-way throttle valve II, on the loop, set gradually source of the gas, filtering pressure reducing valve, oil sprayer, two electric reversal valves of five-way, two outlets of two electric reversal valves of five-way connect two chambeies of cylinder respectively by pipeline, on described two electric reversal valves of five-way and pipeline that cylinder is communicated with one-way throttle valve I and one-way throttle valve II are set respectively.
Described anchor clamps, filtering pressure reducing valve are that filter, pressure-reducing valve and Pressure gauge constitute by the pipeline series connection.
The beneficial effects of the utility model are:
The utility model adopts the Position with One Plane and Two Holes location, all change traditional setting circle pin and rhombus pin into self-centering elastic opening cover, its positioning accuracy height, clamping force are evenly, compact conformation, convenient mounting and clamping, shortening clamping time, anchor clamps life-span be long, are suitable for doing the pallet of production line.
Description of drawings:
Fig. 1: traditional Position with One Plane and Two Holes positioning and clamping schematic diagram, (a) figure is a front view, (b) figure is a vertical view; Wherein, 11-pressing plate; The 12-workpiece; The 13-straight pin; 14-locating hole (O
1); The 15-workpiece bottom; The 16-gripper shoe; 17-rhombus pin; 18-locating hole (O
2).
Fig. 2: traditional Position with One Plane and Two Holes analysis of Positioning Error figure, (a) figure is the basis displacement error, (b) figure is an angular errors.
Fig. 3: the structure of elasticity opening sleeve in the utility model, (a) figure is the front view of cylindrical elastomer opening sleeve, and (b) figure is the vertical view of cylindrical elastomer opening sleeve, and (c) figure is the front view of chamfered edge elastic opening cover, and (d) figure is the vertical view of chamfered edge elastic opening cover; Wherein, 21-workpiece; 22-workpiece locating hole I; 23-cylindrical elastomer opening sleeve; The 24-pull bar; 25-workpiece locating hole II; 26-chamfered edge elastic opening cover; 27-flexure strip I; 28-flexure strip II.
Fig. 4: pneumatic circuit figure in the utility model; Wherein, 31-source of the gas; The 32-filter; The 33-pressure-reducing valve; The 34-Pressure gauge; The 35-oil sprayer; Two electric reversal valves of five-way of 36-; 37-one-way throttle valve I; The 38-cylinder; 39 one-way throttle valve II.
Fig. 5: single-stage worm type of reduction gearing casing clamping schematic diagram of the present utility model; Wherein, 401-air cylinder fixed plate; The 402-cylinder; The 403-lever; The 404-pull bar; The 405-tank floor; The 406-locating hole; 407-cylindrical elastomer opening sleeve; 408-casing faying face; The 409-lower box; 410-casing left and right sides end face; 411-chamfered edge elastic opening cover; The 412-gripper shoe.
The specific embodiment:
The utility model is when machining box, support class part, the targeting scheme of workpiece still adopts the Position with One Plane and Two Holes location, the positioning supports element of workpiece bottom is a gripper shoe, and difference from prior art is, changes alignment pin (straight pin and rhombus pin) into self-centering elastic opening cover.
Shown in Fig. 3 (a)-(d), the utility model has adopted cylindrical elastomer opening sleeve 23 and chamfered edge elastic opening cover 26 respectively, place the cylindrical elastomer opening sleeve 23 of a locating hole I 22 to be installed on the gripper shoe, a location as workpiece 21, place the chamfered edge elastic opening cover 26 of another locating hole II 25 to be installed on the gripper shoe, as another location of workpiece 21.
Shown in Fig. 3 (a)-(b), the utility model changes the short pin of cylinder into cylindrical elastomer opening sleeve 23, and opening sleeve top is made of four concentric flexure strip I 27, and the inboard of flexure strip I 27 is an inner conical surface, and angle is 32 °.The flexure strip root thickness is 2mm, and the opening sleeve substructure is the back taper pull bar, can conveniently insert in the hole of gripper shoe.Insert back taper pull bar 24 in the cylindrical elastomer opening sleeve 23, the male cone (strobilus masculinus) that pull bar 24 outer surface of upper are with flexure strip I 27 inner conical surfaces cooperate, tapering is identical can process the oil storage ring on the male cone (strobilus masculinus) of pull bar 24, to store lubricated butter.Driving pull bar 24 by Pneumatic Transmission moves up and down along the opening sleeve axis.Because the mating surface of opening sleeve and pull bar back taper all has tapering, the power that can apply when pull bar moves makes the opening sleeve flexure strip produce radially distending or contraction, workpiece is realized clamping self-align the time or unclamps.
Shown in Fig. 3 (c)-(d), the utility model also changes the rhombus pin into chamfered edge elastic opening cover 26, and its basic structure is the same with the cylindrical elastomer opening sleeve.Because it only limits the z axle rotational freedom of workpiece as setting element, so has only former and later two symmetrical flexure strip II 28, the width of pull bar back taper is also the same with the flexure strip width.
In the utility model, the bottom of pull bar 24 extends outside the gripper shoe, and the external part of pull bar 24 connects power section, and the power of pull bar can adopt pneumatic gearing, also can adopt hydraulic drive.
Regulate, control conveniently because pneumatic source of the gas is convenient, stressed, and pneumatic scheme satisfied the requirement of clamping force, so select the power source of Pneumatic Transmission for use as pull bar.As shown in Figure 4, pneumatic circuit mainly comprises: source of the gas 31, filtering pressure reducing valve, oil sprayer 35, two the electric reversal valves 36 of five-way, one-way throttle valve I 37, cylinder 38 and one-way throttle valve II 39 etc., on the loop, set gradually source of the gas 31, filtering pressure reducing valve, oil sprayer 35, two electric reversal valves 36 of five-way, two outlets of two electric reversal valves 36 of five-way connect two chambeies of cylinder 38 respectively by pipeline, on the electric reversal valve 36 of described two five-ways and pipeline that cylinder 38 is communicated with one-way throttle valve I 37 and one-way throttle valve II 39 are set respectively.Wherein, filtering pressure reducing valve is that filter 32, pressure-reducing valve 33 and Pressure gauge 34 constitute by the pipeline series connection.
During work, compressed air pressure-reducing valve, oil sprayer 35, two five-way solenoid directional control valves 36, one-way throttle valves (one-way throttle valve I 37 and one-way throttle valve II 39) after filtration feeds cylinder 38, realize the flexible of cylinder piston rod by electronic button control reversal valve, drive pull bar and move distending and the contraction that realizes two elastic opening covers.All pneumatic elements all adopt homemade element, and compressed air pressure is 0.16MPa, and the piston rod movement speed of cylinder 38 can be regulated by the throttling of one-way throttle valve return-air.
As shown in Figure 5, single-stage worm type of reduction gearing casing clamping structure mainly comprises: air cylinder fixed plate 401, cylinder 402, lever 403, pull bar 404, tank floor 405, locating hole 406, cylindrical elastomer opening sleeve 407, casing faying face 408, lower box 409, casing left and right sides end face 410, chamfered edge elastic opening cover 411 and gripper shoe 412 etc., the end face of single-stage worm type of reduction gearing lower box 409 is a casing faying face 408, tank floor 405 is arranged on the gripper shoe 412, offer two locating holes 406 on the tank floor 405, on gripper shoe 412, offer two cylindrical holes corresponding with locating hole 406.One end of cylindrical elastomer opening sleeve 407 inserts in the cylindrical hole of gripper shoe 412, and the other end of cylindrical elastomer opening sleeve 407 places a locating hole of tank floor 405; One end of chamfered edge elastic opening cover 411 inserts in another cylindrical hole of gripper shoe 412, and the other end of chamfered edge elastic opening cover 411 places another locating hole of tank floor 405.Cylinder 402 is arranged on the air cylinder fixed plate 401, and the external part that the back taper of 403, two pull bars 404 of cylinder 402 tops connection lever passes cylindrical elastomer opening sleeve 407 and 411, two pull bars 404 of chamfered edge elastic opening cover respectively is connected on the lever 403.
Adopt the utility model anchor clamps clamping, clamp so that two locating holes location is double on the tank floor 405 front and back line of symmetries, mill casing left and right sides end face 410 and casing involutory surface, the location of tank floor 405 is adopted the location in gripper shoe 412, two holes and is clamped and adopts elastic opening cover (cylindrical elastomer opening sleeve 407 and chamfered edge elastic opening cover 411).The cylinder body of cylinder 402 is fixed on the air cylinder fixed plate 401, and the piston rod of cylinder 402 connects lever 403, and lever 403 connects the back taper pull bar 404 of two elastic openings cover.During clamping, at first the locating hole of tank floor 405 being enclosed within two elastic openings puts, tank floor 405 and gripper shoe 412 are adjacent to, spurring 404 generations of two pull bars simultaneously by the automatic control cylinder 402 of button moves down, because pull bar 404 back tapers and elastic opening cover mating surface have tapering, pull bar 404 back tapers generation radial thrust promotes two elastic openings cover flexure strip generation distending radially, thus location and while clamping work pieces; On the contrary, spur two pull bars 404 simultaneously by the button control cylinder and produce moving of making progress, elastic opening cover flexure strip answer distortion-and unclamp workpiece, and can unload processing work from anchor clamps, very convenient.
The result shows, the utility model adopts the Position with One Plane and Two Holes location, all change traditional setting circle pin and rhombus pin into self-centering elastic opening cover, use the utility model to reach high accuracy (that is: the positioning accuracy of anchor clamps is higher than conventional brace) requirement, clamping force evenly, compact conformation convenient mounting and clamping, anchor clamps life-span be long.
Claims (7)
1. high-accuracy clamp, it is characterized in that these anchor clamps are provided with gripper shoe, cylindrical elastomer opening sleeve and chamfered edge elastic opening cover, gripper shoe is provided with workpiece, have on the workpiece and establish two locating holes, offering two holes corresponding on the gripper shoe with locating hole on the workpiece; One end of cylindrical elastomer opening sleeve inserts in the hole of gripper shoe, and the other end of cylindrical elastomer opening sleeve places a locating hole of workpiece; One end of chamfered edge elastic opening cover inserts in another hole of gripper shoe, and the other end of chamfered edge elastic opening cover places another locating hole of workpiece.
2. according to the described anchor clamps of claim 1, it is characterized in that, the top of cylindrical elastomer opening sleeve is that flexure strip concentric more than three constitutes, the inboard of flexure strip is an inner conical surface, the bottom of cylindrical elastomer opening sleeve is a cylinder, is fitted with pull bar in the cylindrical elastomer opening sleeve, the male cone (strobilus masculinus) that the pull bar outer surface of upper is with the flexure strip inner conical surface cooperates, tapering is identical, the bottom of pull bar extends outside the gripper shoe, and the external part of pull bar connects power section.
3. according to the described anchor clamps of claim 1, it is characterized in that, the top of chamfered edge elastic opening cover is that the flexure strip of two symmetries constitutes, the inboard of flexure strip is an inner conical surface, the bottom of chamfered edge elastic opening cover is a cylinder, is fitted with pull bar in the chamfered edge elastic opening cover, the male cone (strobilus masculinus) that the pull bar outer surface of upper is with the flexure strip inner conical surface cooperates, tapering is identical, the bottom of pull bar extends outside the gripper shoe, and the external part of pull bar connects power section.
4. according to claim 2 or 3 described anchor clamps, it is characterized in that hydraulic drive or pneumatic gearing structure are adopted in power section.
5. according to the described anchor clamps of claim 4, it is characterized in that the pneumatic gearing structure comprises cylinder, lever, cylinder is arranged on the air cylinder fixed plate, and the cylinder top connects lever, and the pull bar of elastic opening cover is connected on the lever.
6. according to the described anchor clamps of claim 5, it is characterized in that, the pneumatic circuit of pneumatic gearing structure comprises: source of the gas, filtering pressure reducing valve, oil sprayer, two the electric reversal valves of five-way, one-way throttle valve I, cylinder and one-way throttle valve II, on the loop, set gradually source of the gas, filtering pressure reducing valve, oil sprayer, two electric reversal valves of five-way, two outlets of two electric reversal valves of five-way connect two chambeies of cylinder respectively by pipeline, on described two electric reversal valves of five-way and pipeline that cylinder is communicated with one-way throttle valve I and one-way throttle valve II are set respectively.
7. according to the described anchor clamps of claim 6, it is characterized in that filtering pressure reducing valve is that filter, pressure-reducing valve and Pressure gauge constitute by the pipeline series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020154183XU CN201799947U (en) | 2010-04-09 | 2010-04-09 | High-precision clamping apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020154183XU CN201799947U (en) | 2010-04-09 | 2010-04-09 | High-precision clamping apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201799947U true CN201799947U (en) | 2011-04-20 |
Family
ID=43869464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020154183XU Expired - Fee Related CN201799947U (en) | 2010-04-09 | 2010-04-09 | High-precision clamping apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201799947U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102328216A (en) * | 2011-09-01 | 2012-01-25 | 中国航空工业第六一八研究所 | Fixture for excircle finish turning and fixture processing method |
| CN103286705A (en) * | 2013-06-14 | 2013-09-11 | 昆山昊凯金属制品有限公司 | Tool fixture |
| CN104354124A (en) * | 2014-10-20 | 2015-02-18 | 中山市亚泰机械实业有限公司 | Lower cavity positioning and clamping mechanism of vacuum laminating machine |
| CN104570947A (en) * | 2015-01-26 | 2015-04-29 | 中北大学 | Numerical control programming method of valve shell series part |
| CN104864942A (en) * | 2014-02-14 | 2015-08-26 | 济南三宇仪表设备有限公司 | Pneumatic spring meter clamping device |
| CN107234558A (en) * | 2016-03-28 | 2017-10-10 | 沈阳海默数控机床有限公司 | Aligning device and method that the datum line of workpiece coincides |
| CN110385588A (en) * | 2019-06-29 | 2019-10-29 | 杭州佳煌传动科技有限公司 | The fixed device of cabinet Milling Machining applied to worm type of reduction gearing |
-
2010
- 2010-04-09 CN CN201020154183XU patent/CN201799947U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102328216A (en) * | 2011-09-01 | 2012-01-25 | 中国航空工业第六一八研究所 | Fixture for excircle finish turning and fixture processing method |
| CN103286705A (en) * | 2013-06-14 | 2013-09-11 | 昆山昊凯金属制品有限公司 | Tool fixture |
| CN104864942A (en) * | 2014-02-14 | 2015-08-26 | 济南三宇仪表设备有限公司 | Pneumatic spring meter clamping device |
| CN104354124A (en) * | 2014-10-20 | 2015-02-18 | 中山市亚泰机械实业有限公司 | Lower cavity positioning and clamping mechanism of vacuum laminating machine |
| CN104570947A (en) * | 2015-01-26 | 2015-04-29 | 中北大学 | Numerical control programming method of valve shell series part |
| CN104570947B (en) * | 2015-01-26 | 2017-06-27 | 中北大学 | A kind of digital control programming method of valve housing series parts |
| CN107234558A (en) * | 2016-03-28 | 2017-10-10 | 沈阳海默数控机床有限公司 | Aligning device and method that the datum line of workpiece coincides |
| CN110385588A (en) * | 2019-06-29 | 2019-10-29 | 杭州佳煌传动科技有限公司 | The fixed device of cabinet Milling Machining applied to worm type of reduction gearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20130409 |