CN104096937A - Fast workpiece blank positioning method and positioning clamp - Google Patents
Fast workpiece blank positioning method and positioning clamp Download PDFInfo
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- CN104096937A CN104096937A CN201410319263.9A CN201410319263A CN104096937A CN 104096937 A CN104096937 A CN 104096937A CN 201410319263 A CN201410319263 A CN 201410319263A CN 104096937 A CN104096937 A CN 104096937A
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Abstract
The invention relates to the field of mechanical machining, in particular to a fast workpiece blank positioning method and positioning clamp. The fast workpiece blank positioning positioning clamp comprises a positioning seat, the positioning seat is provided with an upper pressing piece used for pressing a workpiece blank tightly through the upper portion of the workpiece blank, the upper pressing piece is provided with a limit oblique face used for matching with the positioning oblique face of the top of the workpiece blank, and the side of the positioning seat facing to the limit oblique face is provided with a longitudinal stopping and positioning structure used for stopping the workpiece blank moving on the corresponded direction. The fast workpiece blank positioning positioning clamp is capable of improving the clamping efficiency of the workpiece blank, the reliability of workpiece blank clamping can be improved, assembling accuracy can be improved, and the problems that workpiece clamping efficiency is low and positioning accuracy is low in the electric spark cutting process are solved.
Description
Technical field
The present invention relates to field of machining, particularly related to a kind of workpiece blank part method for rapidly positioning and positioning fixture.
Background technology
On lathe, during processing work, for making the crudy of workpiece reach size, geometry and the requirements such as relative-position error surperficial with other of regulation, before processing, must position workpiece.Principle of six-point fixing all will be observed in the location of any shape workpiece, be that workpiece has six-freedom degree (along the one-movement-freedom-degree of three rectangular co-ordinate direction of principal axis of x, y, z with around the rotational freedom of these three reference axis) in space, to determine the position of workpiece completely, just must limit this six-freedom degree.
As a kind of machining mode, Wire EDM is mainly used in processing various complex-shaped and accurate tiny workpiece, has that allowance is little, machining accuracy high, and now the accurate location of workpiece seems particularly important.
In actual production, baroque special-shaped workpiece for some batch productions generally adopts multiple tracks cutting action to complete, while cutting out workpiece blank part from raw material, easily realize raw-material location, difficult point is the location of workpiece in follow-up cutting action, realize the hi-Fix of workpiece blank part, need limit its six-freedom degree, existing positioning device structure is complicated, complex operation, therefore generally adopt the clamping step that leaves protrusion in Qian road cutting action on workpiece blank part, to facilitate later process, utilize clamping step that workpiece blank part is compressed and is positioned on the crossbeam of electric spark linear cutting machine workbench, as shown in Figure 1, comprise clamping step 1001 and cut main body 1002, in figure, arrow is compaction direction and cut direction.Because the method has only limited four frees degree of workpiece blank part, belong to and owe location, so there is following problem in workpiece in position fixing process: (1) is because workpiece blank part is not located completely, in compaction process, will be moved in the horizontal direction and in vertical direction run-off the straight and torsion, locate inaccurate; (2) because constraint is less, workpiece blank part needs the long period to proofread and correct adjustment in clamping process; (3) for guaranteeing cutting accuracy, while changing workpiece blank part, all will adjust the perpendicularity of molybdenum filament, adjustment cycle is long, and efficiency is lower; (4) owing to being subject to the impact of human factor, repetitive positioning accuracy is poor, the finished form cutting out, dimensional accuracy disunity, and crudy is difficult to control.
Summary of the invention
The object of the present invention is to provide a kind of workpiece blank part method for rapidly positioning, to solve the problem that in spark cutting process, clamping workpiece efficiency is low, positioning precision is poor.
Meanwhile, the present invention also aims to provide a kind of workpiece blank part Quick-positioning clamp that can be used for implementing said method.
In order to address the above problem, workpiece blank part method for rapidly positioning of the present invention by the following technical solutions: workpiece blank part method for rapidly positioning, comprise to the left and right positioning step of workpiece blank part and to workpiece blank part up and down before and after positioning step; Left and right positioning step is workpiece blank part to be pressed on a positioning seat from left side and/or the right side of workpiece blank part by corresponding side compression part; Before and after upper and lower, positioning step is workpiece blank part to be pressed on described positioning seat from the top of workpiece blank part by corresponding upper compressing member, wherein on workpiece blank part, there is clamping step, the top of clamping step is provided with inclined-plane, location, upper compressing member is provided with the spacing inclined-plane corresponding with locating latch face on clamping step, on positioning seat, in the side towards spacing inclined-plane, be provided with front-and-back stop fastening bit architecture, by front-and-back stop fastening bit architecture, stop the movement of workpiece blank part in respective direction.
At least one in described side compression part and upper compressing member is elastic pressed piece.
Workpiece blank part Quick-positioning clamp is by the following technical solutions: workpiece blank part Quick-positioning clamp, comprise positioning seat, positioning seat is provided with for compressing member from the workpiece pressing blank of workpiece blank part top, upper compressing member is provided with the spacing inclined-plane coordinating for the inclined-plane, location with workpiece blank part top, on positioning seat, in the side place towards described spacing inclined-plane, is provided with the front-and-back stop fastening bit architecture for stopping that workpiece blank part moves up in respective party.
Described positioning seat is provided with gathering sill, and upper compressing member comprises and be assemblied in gathering sill and the briquetting that is led up and down and coordinate with positioning seat by gathering sill, and briquetting bottom is located on described spacing inclined-plane.
Described gathering sill forms oat tail groove structure, and briquetting is provided with the gear edge corresponding with gathering sill.
Upper compressing member also comprises with briquetting is in transmission connection and presses down driver part, presses down driver part and is assemblied on positioning seat.
The described driver part that presses down is connected with briquetting anticreep.
The described driver part that presses down is clamping screw.
Described front-and-back stop fastening bit architecture consists of the corresponding side side of positioning seat
At least one in described side compression part and upper compressing member is elastic pressed piece.
Because the upper compressing member of workpiece blank part Quick-positioning clamp of the present invention is provided with the spacing inclined-plane coordinating for the inclined-plane, location with workpiece blank part top, on positioning seat, in the side place towards described spacing inclined-plane, be provided with the front-and-back stop fastening bit architecture for stopping that workpiece blank part moves up in respective party, therefore, in the process of using, only need compressing member can realize upper to workpiece blank part, under, before, after fixing, can play and stop before and after workpiece blank part simultaneously, left and right, the effect swinging up and down, specifically such, when upper compressing member workpiece pressing blank, certainly workpiece blank part just cannot move along the vertical direction again, meanwhile, spacing inclined-plane coordinates with inclined-plane, location, add that front-and-back stop fastening bit architecture coordinates with the respective side (front side or rear side) of workpiece blank part, just can stop workpiece blank part to move up in front and back, in addition, spacing inclined-plane, inclined-plane, location and the acting in conjunction of front-and-back stop fastening bit architecture can also stop before and after workpiece base, left and right, swing up and down, as can be seen here, workpiece blank part Quick-positioning clamp of the present invention not only can improve the clamping efficiency to workpiece blank part, and can increase the reliability to workpiece blank part clamping, improve its assembly precision, therefore, it is low that workpiece blank part Quick-positioning clamp of the present invention has solved in spark cutting process clamping workpiece efficiency, the problem that positioning precision is poor.
Accompanying drawing explanation
Fig. 1 is the structural representation of workpiece blank part of the prior art;
Fig. 2 is the structural representation of the fixture used in the embodiment of workpiece blank part method for rapidly positioning;
Fig. 3 is the profile of the fixture used in the embodiment of workpiece blank part method for rapidly positioning;
Fig. 4 is the exploded view of the fixture used in the embodiment of workpiece blank part method for rapidly positioning.
The specific embodiment
The embodiment of workpiece blank part method for rapidly positioning, the method comprises the left and right positioning step of workpiece blank part 101 and the positioning step of front and back up and down to workpiece blank part 101.
Left and right positioning step is workpiece blank part to be pressed on a positioning seat from left side and/or the right side of workpiece blank part by corresponding side compression part.
Before and after upper and lower, positioning step is workpiece blank part to be pressed on described positioning seat from the top of workpiece blank part by corresponding upper compressing member, wherein on workpiece blank part, there is clamping step 1011, the top of clamping step 1011 is provided with inclined-plane 1012, location, in the present embodiment, this inclined-plane for tilting forward and back, inclined-plane, location 1012, it forms by machined grooves on workpiece blank part 101.
Below in conjunction with the fixture of using in the method, introduce in detail the details of each step of the method.
The structure of the fixture of herein using in paper the method.As in Figure 2-4, this fixture comprises positioning seat, upper compressing member and side compression part to the structure of fixture.
Positioning seat comprises pedestal 11, wall 12 and crossbeam 13, wall 12 is positioned at the forward edge place of pedestal 11 and is 90 ° of angle settings with pedestal 11, has guaranteed thus vertical between wall 12 and horizontal plane.In addition, the trailing flank of wall 12 is provided with gathering sill 121, and gathering sill 121 is the gathering sill on above-below direction, and in the present embodiment, gathering sill 121 adopts is the groove on above-below direction and is oat tail groove structure.Crossbeam 13 is located at the top of wall 12 and is positioned at the upper port place of gathering sill 121, and it is to exist as the installation carrier of upper compressing member.The leading flank of wall 12 has formed the front-and-back stop fastening bit architecture that can act on workpiece blank part 101, and it is mainly the effect of playing block workpiece blank part 101, prevents that it from moving backward.
Upper compressing member comprises briquetting 14 and presses down driver part with briquetting 14 is in transmission connection.Briquetting 14 is assemblied in the gathering sill 121 of positioning seat and is led and coordinate up and down with positioning seat by gathering sill 121, in order to prevent that briquetting 14 from moving up in front and back, the place, the left and right sides of briquetting 14 is also respectively equipped with gear along 141, and gear coordinates and formed dovetail groove fit structure with gathering sill 121 along 141.In addition, as one of technical essential of the present invention, the bottom of briquetting 14 is also provided with spacing inclined-plane, spacing inclined-plane is the inclined-plane corresponding with locating latch face on workpiece blank part, and the corresponding meaning is herein, and inclined-plane, location is all identical with incline direction, the gradient on spacing inclined-plane, when in use, between the two, can fit mutually, meanwhile, spacing inclined-plane coordinates and can also stop workpiece blank part 101 to move forward with inclined-plane, location.Hence one can see that, and spacing inclined-plane, inclined-plane, location and front-and-back stop fastening bit architecture three work in coordination just can realize the fixing on upper and lower fore-and-aft direction to workpiece blank part 101.In the present embodiment, what press down the concrete employing of driver part is to press down screw rod 15, the lower end that presses down screw rod 15 is provided with anticreep brace 151, briquetting 14 tops are provided with the anticreep draw-in groove 142 corresponding with anticreep brace, anticreep brace 151 snaps in to anticreep draw-in groove 142 and rotation therein, thereby can stop, press down screw rod 15 and briquetting 14 disengagings, in the present embodiment, pressing down screw rod 15 is that Screw assembly is on the crossbeam 13 of positioning seat.
In the present embodiment, what side compression part adopted is side pressure screw rod 16, in the present embodiment, side pressure screw rod 16 Screw assemblies are on the right side of the wall 12 of positioning seat, be positioned at the right side of gathering sill, its the inner stretches in gathering sill, by screwing side pressure screw rod 16, can realize to workpiece blank part 101 fixing on left and right directions.
Fixture, after assembling, be take the bottom surface of pedestal of positioning seat as benchmark carries out grinding to the plane A being comprised of pedestal, wall, crossbeam, and making three be in same plane A(together is front-and-back stop fastening bit architecture).When the positioning step of workpiece blank part packs the opening on wall into, inclined-plane, location by spacing inclined-plane workpiece pressing blank, the vertical direction that this operation can limit on the one hand workpiece blank part moves and around transverse axis, the rotation three degree of freedom of the longitudinal axis, another side produces and makes workpiece blank part be close to the cross force of plane A, rely on the restriction of plane A, make workpiece blank part in the laterally movement of (fore-and-aft direction), two frees degree of rotation around vertical direction are eliminated, only this operation has just limited five frees degree of workpiece, add the pressuring action of side pressure screw rod, limited the six-freedom degree of workpiece, realized location completely.
Result of the test shows, this localization method is simple to operate, easy to use, realized workpiece fast, accurate location.While changing workpiece in the past, the time more than operation such as the clamping of workpiece, correction, molybdenum wire verticality adjustment cost 5min, adopt the method, after molybdenum filament is adjusted, while changing workpiece, without adjusting its perpendicularity, the replacing workpiece operating time only needs 10-20s again; Utilize workpiece (size of cut direction is in the 100mm) dimensional accuracy that this localization method cuts out can be controlled in 10 μ m, repetitive positioning accuracy is higher, has reduced percent defective, has improved production efficiency simultaneously.
In other embodiment of workpiece blank part method for rapidly positioning, press down screw rod and side pressure screw rod can also change elastic pressure bar into, the thrust in the time of can making batch workpiece production resetting like this reaches unanimity, and improves the service life of fixture simultaneously.
The embodiment of workpiece blank part Quick-positioning clamp, as in Figure 2-4, it is identical with the structure of the fixture of using in workpiece blank part method for rapidly positioning, and it will not go into details herein.
In other embodiment of workpiece blank part Quick-positioning clamp, press down screw rod and side pressure screw rod can also change elastic pressure bar into, thrust in the time of can making like this batch workpiece production resetting reaches unanimity, improve the service life of fixture simultaneously, in addition, press down driving mechanism and can also adopt hydraulic push rod etc., can realize in such cases the Automatic-clamping of fixture, make more convenient to operate; Certainly, at some, to the less demanding occasion of workpiece blank part constant intensity, side compression part can also omit.
Claims (10)
1. workpiece blank part method for rapidly positioning, is characterized in that, comprises the left and right positioning step of workpiece blank part and the positioning step of front and back up and down to workpiece blank part; Left and right positioning step is workpiece blank part to be pressed on a positioning seat from left side and/or the right side of workpiece blank part by corresponding side compression part; Before and after upper and lower, positioning step is workpiece blank part to be pressed on described positioning seat from the top of workpiece blank part by corresponding upper compressing member, wherein on workpiece blank part, there is clamping step, the top of clamping step is provided with inclined-plane, location, upper compressing member is provided with the spacing inclined-plane corresponding with locating latch face on clamping step, on positioning seat, in the side towards spacing inclined-plane, be provided with front-and-back stop fastening bit architecture, by front-and-back stop fastening bit architecture, stop the movement of workpiece blank part in respective direction.
2. workpiece blank part method for rapidly positioning according to claim 1, is characterized in that, at least one in described side compression part and upper compressing member is elastic pressed piece.
3. for implementing the workpiece blank part Quick-positioning clamp of the method for claim 1, it is characterized in that, comprise positioning seat, positioning seat is provided with for compressing member from the workpiece pressing blank of workpiece blank part top, upper compressing member is provided with the spacing inclined-plane coordinating for the inclined-plane, location with workpiece blank part top, on positioning seat, in the side place towards described spacing inclined-plane, is provided with the front-and-back stop fastening bit architecture for stopping that workpiece blank part moves up in respective party.
4. workpiece blank part Quick-positioning clamp according to claim 3, it is characterized in that, described positioning seat is provided with gathering sill, and upper compressing member comprises and be assemblied in gathering sill and the briquetting that is led up and down and coordinate with positioning seat by gathering sill, and briquetting bottom is located on described spacing inclined-plane.
5. workpiece blank part Quick-positioning clamp according to claim 4, is characterized in that, described gathering sill forms oat tail groove structure, and briquetting is provided with the gear edge corresponding with gathering sill.
6. workpiece blank part Quick-positioning clamp according to claim 4, is characterized in that, upper compressing member also comprises with briquetting is in transmission connection and presses down driver part, presses down driver part and is assemblied on positioning seat.
7. workpiece blank part Quick-positioning clamp according to claim 6, is characterized in that, described in press down driver part and be connected with briquetting anticreep.
8. workpiece blank part Quick-positioning clamp according to claim 6, is characterized in that, described in to press down driver part be clamping screw.
9. workpiece blank part Quick-positioning clamp according to claim 4, is characterized in that, described front-and-back stop fastening bit architecture consists of the corresponding side side of positioning seat.
10. according to the workpiece blank part Quick-positioning clamp described in claim 3-9 any one, it is characterized in that, at least one in described side compression part and upper compressing member is elastic pressed piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410319263.9A CN104096937B (en) | 2014-07-07 | 2014-07-07 | Workpiece blank part method for rapidly positioning and positioning fixture |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410319263.9A CN104096937B (en) | 2014-07-07 | 2014-07-07 | Workpiece blank part method for rapidly positioning and positioning fixture |
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| Publication Number | Publication Date |
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| CN104096937A true CN104096937A (en) | 2014-10-15 |
| CN104096937B CN104096937B (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410319263.9A Active CN104096937B (en) | 2014-07-07 | 2014-07-07 | Workpiece blank part method for rapidly positioning and positioning fixture |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108214037A (en) * | 2018-01-08 | 2018-06-29 | 歌尔股份有限公司 | Machine tool fixture |
| CN112548247A (en) * | 2020-12-18 | 2021-03-26 | 浙江工业大学 | Spark-erosion wire cutting positioning fixture |
| CN114226885A (en) * | 2021-12-30 | 2022-03-25 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Electric spark integrated machining quick-change device and method for multi-hole series communication hole |
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| CN203599913U (en) * | 2013-11-28 | 2014-05-21 | 浙江爱铂门控有限公司 | Clamp for inner-hole locating and plane milling of door closer shell |
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Patent Citations (7)
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| US6930272B1 (en) * | 2004-07-06 | 2005-08-16 | Michael P. Limano | Vise for holding a workpiece on an EDM machine |
| EP2226145A2 (en) * | 2009-03-04 | 2010-09-08 | F. J. Pfeffer Formenbau GmbH | Clamping device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108214037A (en) * | 2018-01-08 | 2018-06-29 | 歌尔股份有限公司 | Machine tool fixture |
| CN112548247A (en) * | 2020-12-18 | 2021-03-26 | 浙江工业大学 | Spark-erosion wire cutting positioning fixture |
| CN114226885A (en) * | 2021-12-30 | 2022-03-25 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Electric spark integrated machining quick-change device and method for multi-hole series communication hole |
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| CN104096937B (en) | 2016-12-07 |
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