CN204123122U - Shell part clamp for machining - Google Patents
Shell part clamp for machining Download PDFInfo
- Publication number
- CN204123122U CN204123122U CN201420435169.5U CN201420435169U CN204123122U CN 204123122 U CN204123122 U CN 204123122U CN 201420435169 U CN201420435169 U CN 201420435169U CN 204123122 U CN204123122 U CN 204123122U
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- screw rod
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- positioning fixture
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Abstract
The utility model discloses a kind of shell part clamp for machining, comprise bottom surface locating piece, large end Internal hole positioning block and side positioning fixture, described bottom surface locating piece totally four groups, be evenly distributed on bottom surface with circle-shaped, described large end Internal hole positioning block totally four groups, be uniformly distributed in large end endoporus, described side positioning fixture is two sides clamping and positioning fixtures, adopts bidirectional screw centering location clamping mode.It is two sides bidirectional screw centerings location clamping mode that the utility model changes the tight mode of a side locating clip on the basis of existing positioning fixture, adopts the centering locate mode of one side, a hole and two sides, ensures that location is reliable, easy to use; To avoid in existing fixture locate mode because lateralarea is little or inaccurate, the unreliable problem in location that causes of locating surface surface quality difference, stop to locate that the inaccurate installation brought is interfered, hole phenomenon of slitting, reduce waste product.
Description
Technical field
The utility model relates to a kind of shell part clamp for machining, especially a kind of fixture being applicable to flywheel shell of engine processing.
Background technology
Flywheel shell of engine is irregular ironcasting, and two pin-and-holes are critical sizes of connecting engine body, is also the machining benchmark of other surface of bell housing and hole system.Bell housing is typical shell part, and pin-and-hole processing is general adopts traditional " hole, two sides one " locate mode, utilizes bell housing bottom surface, holds seam (holding endoporus greatly) and side as positioning datum greatly, manufacture and design pin-and-hole clamp for machining.Existing fixture mostly adopts tradition " hole, two sides one " locate mode-as shown in Figure 1, except utilizing bottom surface and large end Internal hole positioning, according to bell housing design feature, adopts a side as positioning datum.But because lateralarea is less, and be black skin, surface quality is bad, location is inaccurate, there is pin-and-hole position off-set phenomenon in the bell housing processed, and the pin-and-hole using this fixture to process processes other surface as positioning datum and position off-set phenomenon also appears in hole system, causes installation to be interfered time serious, hole phenomenon of slitting, so that occurs a large amount of waste product.
Utility model content
The utility model technical issues that need to address be to provide a kind ofly can accurately to locate, convenient and practical shell part clamp for machining.
For solving the problem, technical solution adopted in the utility model is: a kind of shell part clamp for machining, comprise bottom surface locating piece, large end Internal hole positioning block and side positioning fixture, described bottom surface locating piece totally four groups, be evenly distributed on bottom surface with circle-shaped, described large end Internal hole positioning block totally four groups, be uniformly distributed in large end endoporus, described side positioning fixture is two sides clamping and positioning fixtures, adopts bidirectional screw centering location clamping mode.
Above-mentioned side positioning fixture comprises screw rod axle bed, left-hand screw bar, handwheel, left screw rod frame, right screw rod frame, screw shaft, right handed worm, wherein penetrate screw shaft in screw rod axle bed, and on screw shaft, on the left of screw rod axle bed, left-hand screw bar and handwheel are installed successively, screw shaft installs right handed worm on the right side of screw rod axle bed, left-hand screw bar is supported by left screw rod frame, and right handed worm is supported by right screw rod frame.
Described side positioning fixture further comprises left cushion block, right cushion block, and left cushion block is between left-hand screw bar and workpiece, and right cushion block is between right handed worm and workpiece.
The beneficial effect adopting technique scheme to produce is: it is bidirectional screw centering location, two sides clamping mode that the utility model changes the tight mode of a side locating clip on the basis of existing positioning fixture, adopt the centering locate mode of one side, a hole and two sides, ensure that location is reliable, easy to use; To avoid in existing fixture locate mode because lateralarea is little or inaccurate, the unreliable problem in location that causes of locating surface surface quality difference, stop to locate that the inaccurate installation brought is interfered, hole phenomenon of slitting, reduce waste product.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing employing " hole, two sides one " positioning fixture processing;
Fig. 2 is the structural representation adopting the processing of the utility model positioning fixture;
Wherein: 1, right screw rod frame, 2, right cushion block, 3, screw shaft, 4, right handed worm, 5, left cushion block, 6, screw rod axle bed, 7, left-hand screw bar, 8, handwheel, 9, locking nut, 10, left screw rod frame, 11, bottom surface locating piece, 12, side positioning fixture, 13, large end Internal hole positioning block, 14, bell housing.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail: Figure 1 shows that existing fixture producing shell parts especially flywheel shell of engine time fixture location structure schematic diagram, existing fixture adopts " hole, two sides one " locate mode, utilize bottom surface, hold Internal hole positioning greatly, simultaneously according to bell housing design feature, a side is adopted to carry out postorder processing as positioning datum.Namely described " hole, two sides one " locate mode arranges bottom surface locating piece 11 in bell housing 14 bottom surface, large end Internal hole positioning block 13 is set in the large end seam (holding endoporus greatly) in bell housing 14 bottom surface, described bottom surface locating piece 11, large end Internal hole positioning block 13 are four groups, and be along the circumferential direction uniformly distributed separately, to realize uniform and stable location.
Figure 2 shows that positioning clamping schematic diagram during the utility model positioning fixture processing flywheel shell of engine part, the utility model adopts the location clamping mode of " simultaneously, a hole, two sides ", existing side positioning fixture is changed into two sides bidirectional screw centering locating clip clamper, ensure that location, side is more reliable, it is convenient to use.Avoid in existing fixture locate mode because of inaccurate, the unreliable problem in location that lateralarea is little or locating surface surface quality difference causes.
The utility model side positioning fixture comprises screw rod axle bed 6, left-hand screw bar 7, handwheel 8, left screw rod frame 10, right screw rod frame 1, screw shaft 3, right handed worm 4, wherein penetrate screw shaft 3 in screw rod axle bed 6, and on screw shaft 3, left-hand screw bar 7 and handwheel 8 are installed on the left of screw rod axle bed 6 successively, screw shaft 3 installs right handed worm 4 on the right side of screw rod axle bed 6, left-hand screw bar 7 is supported by left screw rod frame 10, right handed worm 4 is supported by right screw rod frame 1, and handwheel 8 is fixed on screw shaft by locking nut 9.
Described side positioning fixture further comprises left cushion block 5, right cushion block 2, and left cushion block 5 is between left-hand screw bar 7 and flywheel shell of engine, and right cushion block 2 is between right handed worm 4 and flywheel shell of engine.
The utility model side positioning fixture mainly utilizes the principle of concentric vice, on screw shaft, the left and right sides arranges bidirectional screw (on helical axis, left and right two leads of screw are identical), use reverse-flighted screw, drive two, left and right cushion block to move to center with hand wheel rotating simultaneously, realize two sides centering location clamping.During work, rotate handwheel 8, left-hand screw bar 7 and right handed worm 4 to while center move, promote left cushion block 5 and right cushion block 2 moves to center, thus clamping work pieces left and right sides, realize two sides centering clamping.
Claims (3)
1. a shell part clamp for machining, comprise bottom surface locating piece (11), large end Internal hole positioning block (13) and side positioning fixture (12), totally four groups, described bottom surface locating piece (11), be evenly distributed on bottom surface with circle-shaped, described large end Internal hole positioning block (13) totally four groups, be uniformly distributed in large end endoporus, it is characterized in that: described side positioning fixture is two sides clamping and positioning fixtures, adopt bidirectional screw centering location clamping mode.
2. shell part clamp for machining device according to claim 1, it is characterized in that described side positioning fixture (12) comprises screw rod axle bed (6), left-hand screw bar (7), handwheel (8), left screw rod frame (10), right screw rod frame (1), screw shaft (3), right handed worm (4), wherein penetrate screw shaft (3) in screw rod axle bed (6), and successively left-hand screw bar (7) and handwheel (8) are installed in upper screw rod axle bed (6) left side of screw shaft (3), screw shaft installs right handed worm (4) on the right side of screw rod axle bed, left-hand screw bar (7) is supported by left screw rod frame (10), right handed worm (4) is supported by right screw rod frame (1).
3. shell part clamp for machining according to claim 1, it is characterized in that described side positioning fixture also comprises left cushion block (5), right cushion block (2), left cushion block (5) is positioned between left-hand screw bar (7) and workpiece, and right cushion block (2) is positioned between right handed worm (4) and workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420435169.5U CN204123122U (en) | 2014-08-04 | 2014-08-04 | Shell part clamp for machining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420435169.5U CN204123122U (en) | 2014-08-04 | 2014-08-04 | Shell part clamp for machining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204123122U true CN204123122U (en) | 2015-01-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420435169.5U Active CN204123122U (en) | 2014-08-04 | 2014-08-04 | Shell part clamp for machining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204123122U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110281062A (en) * | 2019-07-15 | 2019-09-27 | 石思思 | Center hole positioning device based on thread screw motion principle |
-
2014
- 2014-08-04 CN CN201420435169.5U patent/CN204123122U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110281062A (en) * | 2019-07-15 | 2019-09-27 | 石思思 | Center hole positioning device based on thread screw motion principle |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |