CN204934387U - C shape thin-wall part fast fixture - Google Patents
C shape thin-wall part fast fixture Download PDFInfo
- Publication number
- CN204934387U CN204934387U CN201520608562.4U CN201520608562U CN204934387U CN 204934387 U CN204934387 U CN 204934387U CN 201520608562 U CN201520608562 U CN 201520608562U CN 204934387 U CN204934387 U CN 204934387U
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- block
- shape thin
- lower platen
- pressing plate
- wall part
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Abstract
The utility model C shape thin-wall part fast fixture, support bar is fixed with pressing plate, the lower surface of pressing plate is processed with the pressing groove of circular arc, base is provided with vertical guide post, guide post slidably connects lower platen, the upper surface of lower platen is processed with lower indent, presses down slot immediately below pressing groove; Support bar is provided with two back-up blocks that can slide up and down, and back-up block is between lower platen and pressing plate, and the outer surface of back-up block is arc surface.Because back-up block can slide up and down on pole, when back-up block is moved to clamped position, can coordinate together with lower platen and pressing plate and C shape thin-wall workpiece is supported and clamped.Be provided with back-up block, can be supported by the inner surface of the outer surface of the circular arc on back-up block to C shape thin-wall workpiece, and can balance by the pressure of pressing plate function on C shape thin-wall workpiece, protection C shape thin-wall workpiece is unlikely to be damaged by pressure when clamping.
Description
Technical field
The utility model relates to the positioning clamping device in a kind of machining, is specifically related to a kind of C shape thin-wall part fast fixture.
Background technology
Thin-wall workpiece is the abbreviation of a class thin-wall part, is processed with stretch bending and mould punching two kinds of modes usually for thin-wall part.For the thin-wall part of some abnormity, usually need to consider the geometry of workpiece and the stressing conditions processing mode reasonable in design to it when processing.For C shape thin-wall workpiece, its shape is similar to a cylinder not having to seal, or the cylinder that a Partial Shear falls.Clearly, directly can not carry out shearing by cylinder, the waste of material can be caused on the one hand, processing cost is significantly increased, causes product to lose market competition advantage; On the other hand, carry out shearing by cylinder, larger impact can be caused to cylinder itself, very easily cause cylinder to deform in shearing.According to the size of deflection, if do not cause structural destruction, can be corrected by the later stage and carry out shaping, but the surface accuracy of the C shape thin-wall workpiece after shaping is poor, often can not reach the accurate requirement used.So practical processing mode selects stretch bending.By special squeezer, bending operation is carried out to thin plate, make it form the C shape thin-wall workpiece of preliminary working.Due in bending processing mode, the distortion that C shape thin-wall workpiece can be caused certain and curling, needs to process it in follow-up processing.But the shape special for it and the feature of thin-walled, there is great problem in clamping and location.Especially, for the clamping of this miniature parts, need to consider working (machining) efficiency, therefore completing location fast and clamping and in the process of clamping, do not produce distortion is the problem needing to solve.
Utility model content
The purpose of this utility model is to provide a kind of C shape thin-wall part fast fixture, can carry out quick position and clamp operation, and can provide effective support to C shape thin-wall workpiece, prevents from occurring distortion in the process of clamping.
For achieving the above object, the technical solution of the utility model is: C shape thin-wall part fast fixture, comprise base, described base is provided with support bar, and described support bar is fixed with pressing plate, and the lower surface of described pressing plate is processed with the pressing groove of circular arc, described base is provided with vertical guide post, described guide post slidably connects lower platen, and the upper surface of described lower platen is processed with lower indent, described in press down slot immediately below pressing groove; Described support bar is provided with two back-up blocks that can slide up and down, and described back-up block is between lower platen and pressing plate, and the outer surface of described back-up block is arc surface.
When adopting technique scheme, by the lower indent on the pressing groove on pressing plate and lower platen, C shape thin-wall workpiece to be clamped can be placed and supported.Because back-up block can slide up and down on pole, when back-up block is moved to clamped position, can coordinate together with lower platen and pressing plate and C shape thin-wall workpiece is supported and clamped.By the effect of lower indent and pressing groove, can increase the contact area with C shape thin-wall workpiece surface, dispersion lower platen and pressing plate, to the active force of C shape thin-wall workpiece, prevent crimp.Moreover; be provided with back-up block; can be supported by the inner surface of the outer surface of the circular arc on back-up block to C shape thin-wall workpiece, and can balance by the pressure of pressing plate function on C shape thin-wall workpiece, protection C shape thin-wall workpiece is unlikely to be damaged by pressure when clamping.
Further improvement project, the arc of described pressing groove is quarter circular arc.
Further improvement project, the arc of described lower indent is quarter circular arc.The arc of pressing groove and lower indent is unsuitable excessive or too small, and through repeatedly testing, quarter circular arc is by providing best clamping effect.
Further improvement project, described support bar is provided with two movable blocks that can vertically slide, and described movable block is fixed with the connecting rod of level, and described back-up block is fixed on the end of connecting rod.This setting, can stretch between lower platen and pressing plate by back-up block by the effect of connecting rod, to avoid in clamping process connecting rod or back-up block and C shape thin-wall workpiece to interfere.
Further improvement project, the inner surface of described back-up block is plane, and the end face of the inner surface of described back-up block, the end face of connecting rod and movable block is positioned at same plane.During this is arranged, because three faces are positioned at same plane, when the minimum spacing position of back-up block, back-up block, connecting rod and movable block can be close together, and make overall structure more compact.
Further improvement project, the rotated down described base being positioned at lower platen is provided with cam, and the flange of described cam is resisted against on the lower surface of lower platen.By arranging cam, directly can realize mobile lower platen by rotating cam, thus can clamp.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is the structural representation of the utility model C shape thin-wall part fast fixture embodiment.
Reference numeral: base 1, support bar 2, pressing plate 3, pressing groove 31, cam 11, guide post 12, lower platen 4, lower indent 41, workpiece 5, movable block 6, connecting rod 61, back-up block 62.
Detailed description of the invention
As shown in Figure 1, the utility model C shape thin-wall part fast fixture, comprises base 1, base 1 is fixed with vertical support bar 2, have the pressing plate 3 of a level at the end winding support of support bar 2.The lower surface of pressing plate 3 is processed with the pressing groove 31 of a circular arc, the shape of this pressing groove 31 is quarter circular arc.Base 1 is also provided with a set of hold-down mechanism, this hold-down mechanism includes the cam 11 rotating and be arranged on base 1, be fixed on the guide post 12 that on base 1 two are vertical, guide post 12 has been slidably connected a lower platen 4, and the upper surface of lower platen 4 is also processed with a lower indent 41.Lower indent 41 is positioned at immediately below pressing groove 31, and the shape of lower indent 41 is identical with size with the shape of pressing groove 31 with size.By the handle on rotating cam 11, moving cam 11 can be with to rotate, the flange of cam 11 is resisted against on the lower surface of lower platen 4.Rely on the effect of cam 11, by lower platen 4 jack-up, make lower platen 4 along guide post 12 upward sliding, by the lower indent 41 on lower platen 4 and pressing groove 31 acting in conjunction on pressing plate 3, workpiece 5 is clamped.In addition, on base 1 side pole 2 upper rack posts 2 on be connected with upper and lower two hydraulic cylinders, the piston rod of hydraulic cylinder is fixedly connected with movable block 6, by the effect of upper and lower two hydraulic cylinders, upper and lower two movable blocks 6 can be driven respectively to move up and down along pole 2.Movable block 6 has welded the connecting rod 61 of level, and connecting rod 61 can move up and down along with moving up and down of movable block 6.Have the back-up block 62 of an arc at the end winding support of connecting rod 61, back-up block 62 is divided into upper and lower two pieces, can move along with moving up and down of connecting rod 61.And back-up block 62 there is an arc surface, can contact with the inner surface of workpiece 5 when locating, and workpiece 5 can be given from inside and support, prevent the workpiece 5 when clamping to curve inwardly distortion.The inner surface that upper and lower two back-up blocks 62 are relative is plane, and the end face that the end face that the inner surface of back-up block 62, connecting rod 61 are relative is relative with movable block 6 is positioned at same plane.Because three faces are positioned at same plane, when the minimum spacing position of back-up block 62, back-up block 62, connecting rod 61 and movable block 6 can be close together, and make overall structure more compact.
During use, two movable blocks 6 are moved to centre by two hydraulic cylinders up and down on operation pole 2, until two movable blocks 6 are drawn close together, at this moment, two connecting rods 61 being fixed on movable block 6 also lean against together, thus make the spacing of two back-up blocks 62 minimum.At this moment, workpiece 5 to be held is placed in the lower indent 41 of lower platen 4.After placing workpiece 5, pull handle and to try rotating cam 11, head into 5 in the pressing groove 31 on pressing plate 3, but not excessive compression.Again operate two hydraulic cylinders up and down on pole 2, two movable blocks 6 are moved at two ends up and down, until stop when moving to operating position.When being positioned at operating position, two back-up blocks 62 are fitted on the inner surface of workpiece 5, and this position is the normal place that workpiece 5 clamps, and can not cause extruding to workpiece 5 or stretch.Finally, again by handle rotating cam 11, until stop after lower platen 4 is moved to operating position.Finally, in working order, complete the positioning clamping effect to workpiece 5 by the acting in conjunction of lower platen 4, back-up block 62 and pressing plate 3.
In the utility model, the position of cam 11 pays particular attention to, the position of suitable layout cam 11, and make when clamped position, cam 11 is in the state of self-locking.
Above-described is only preferred embodiment of the present utility model; should be understood that; for a person skilled in the art; without departing from the concept of the premise utility; some distortion and improvement can also be made; these also should be considered as protection domain of the present utility model, and these all can not affect effect and the practical applicability of the utility model enforcement.
Claims (6)
1.C shape thin-wall part fast fixture, comprise base, described base is provided with support bar, described support bar is fixed with pressing plate, and the lower surface of described pressing plate is processed with the pressing groove of circular arc, it is characterized in that, described base is provided with vertical guide post, described guide post slidably connects lower platen, and the upper surface of described lower platen is processed with lower indent, described in press down slot immediately below pressing groove; Described support bar is provided with two back-up blocks that can slide up and down, and described back-up block is between lower platen and pressing plate, and the outer surface of described back-up block is arc surface.
2. C shape thin-wall part fast fixture according to claim 1, is characterized in that, the arc of described pressing groove is quarter circular arc.
3. C shape thin-wall part fast fixture according to claim 1, is characterized in that, the arc of described lower indent is quarter circular arc.
4. C shape thin-wall part fast fixture according to claim 1, it is characterized in that, described support bar is provided with two movable blocks that can vertically slide, and described movable block is fixed with the connecting rod of level, and described back-up block is fixed on the end of connecting rod.
5. C shape thin-wall part fast fixture according to claim 1, is characterized in that, the inner surface of described back-up block is plane, and the end face of the inner surface of described back-up block, the end face of connecting rod and movable block is positioned at same plane.
6. C shape thin-wall part fast fixture according to claim 1, it is characterized in that, the rotated down described base being positioned at lower platen is provided with cam, and the flange of described cam is resisted against on the lower surface of lower platen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520608562.4U CN204934387U (en) | 2015-08-13 | 2015-08-13 | C shape thin-wall part fast fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520608562.4U CN204934387U (en) | 2015-08-13 | 2015-08-13 | C shape thin-wall part fast fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204934387U true CN204934387U (en) | 2016-01-06 |
Family
ID=55001843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520608562.4U Expired - Fee Related CN204934387U (en) | 2015-08-13 | 2015-08-13 | C shape thin-wall part fast fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204934387U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111729142A (en) * | 2020-05-09 | 2020-10-02 | 江天云 | Membrane sleeve taking mechanism of dialyzer membrane pulling line |
-
2015
- 2015-08-13 CN CN201520608562.4U patent/CN204934387U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111729142A (en) * | 2020-05-09 | 2020-10-02 | 江天云 | Membrane sleeve taking mechanism of dialyzer membrane pulling line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20160813 |