CN203171473U - Self-centering fixture - Google Patents
Self-centering fixture Download PDFInfo
- Publication number
- CN203171473U CN203171473U CN 201320050949 CN201320050949U CN203171473U CN 203171473 U CN203171473 U CN 203171473U CN 201320050949 CN201320050949 CN 201320050949 CN 201320050949 U CN201320050949 U CN 201320050949U CN 203171473 U CN203171473 U CN 203171473U
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- China
- Prior art keywords
- self
- connecting shaft
- gears
- air cylinders
- centering
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- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
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- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Abstract
The utility model belongs to the technical field of workpiece fixtures, and particularly relates to a self-centering fixture. The self-centering fixture comprises two air cylinders, two clamping boards, two racks, a fixture body, gears, two guide rods, a connecting shaft and a base. The fixture body is fixed on the base. The connecting shaft is arranged in the middle of the fixture body in a transverse mode. The two ends of the connecting shaft are connected with the gears respectively. The racks matched with the gears mutually are arranged on the gears respectively. The two racks are connected with the clamping boards respectively. The clamping boards are connected with the air cylinders respectively. The two air cylinders are symmetrically distributed and connected through the two guide rods. The two guide rods are symmetrically arranged on two sides of the connecting shaft in the longitudinal direction. According to the self-centering fixture, the two air cylinders are symmetrically distributed, so that stress is even, movement is flexible, and positioning and clamping are realized at the same time. When multiple self-centering fixtures are used at the same time, positional accuracy still can be guaranteed. The gears and the racks form a transmission structure which makes the air cylinders and the clamping boards be identical in movement velocity and opposite in movement direction, so that inconsistent movement caused by non-uniform air supply and gas compressibility is avoided.
Description
Technical field
The utility model belongs to the work piece holder technical field, is specifically related to a kind of self-centering fixture.
Background technology
Members such as the column in external wooden house, crossbeam, cant beam are solid wood, and forming surface such as porose, the translot of distributing on these members, vertical slot, skewed slot are inserted metal connecting piece in forming surface, primary structural component can be cross-linked together, form the main frame in house.Forming surface dimensional accuracy, position accuracy demand are higher, and these forming surface are finished through machining.Because member section size difference, size, the position distribution of main machined surface have nothing in common with each other, workpiece needs repeatedly the conversion station, through many cutter is processed, necessary self-centering when the processing request workpiece clamps, when the Workpiece length size bigger, when needing several anchor clamps to clamp simultaneously, can guarantee the workpiece positioning accuracy.
Summary of the invention
The purpose of this utility model be to provide a kind of can self-centering anchor clamps.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of self-centering fixture, comprise cylinder, clamping plate, tooth bar, clamp body, gear, guide post, connecting shaft, base, described clamp body is fixed on the base, described clamp body intermediate lateral is provided with connecting shaft, the connecting shaft two ends are connected with gear respectively, be respectively equipped with tooth bar with matching on the gear, two tooth bars are connected with clamping plate respectively, clamping plate links to each other with cylinder respectively, two cylinders are symmetrical distribution, link to each other by two guide posts between two cylinders, and two guide post symmetries vertically are respectively in the connecting shaft both sides.
Further, the number of teeth of described two gears is identical.
Further, described two gears are centrosymmetric, and two tooth bars are centrosymmetric.
The utlity model has following beneficial effect: 2 cylinders that are symmetrically distributed, stressed even, flexible movements realize the location simultaneously and clamp, and when a plurality of anchor clamps use simultaneously, still can guarantee positioning accuracy; Utilize that gear, tooth bar drive mechanism make cylinder, clamping plate movement velocity size is identical, direction is opposite, the motion that avoided that air feed is inhomogeneous, gas compressibility etc. causes is inconsistent.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 be among Fig. 1 A-A to cutaway view.
Among the figure, 1, cylinder, 2, clamping plate, 3, tooth bar, 4, clamp body, 5, gear, 6, guide post, 7, connecting shaft, 8, base.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is elaborated
As Fig. 1, shown in Figure 2, a kind of self-centering fixture, comprise cylinder 1, clamping plate 2, tooth bar 3, clamp body 4, gear 5, guide post 6, connecting shaft 7, base 8, described clamp body 4 is fixed on the base 8, described clamp body 4 intermediate lateral are provided with connecting shaft 7, connecting shaft 7 two ends are connected with gear 5 respectively, be respectively equipped with tooth bar 3 with matching on the gear 5, two tooth bars 3 are connected with clamping plate 2 respectively, clamping plate 2 links to each other with cylinder 1 respectively, two cylinders 1 are symmetrical distribution, link to each other by two guide posts 6 between two cylinders 1, two guide posts, 6 symmetries vertically are respectively in connecting shaft 7 both sides, and the number of teeth of described two gears 5 is identical, described two gears 5 are centrosymmetric, and two tooth bars 3 are centrosymmetric.
Workpiece is placed between two clamping plates 2, two cylinder 1 symmetries are installed and are promoted a clamping plate 2 respectively, left side cylinder 1 promotes left side clamping plate 2, the tooth bar 3 that links to each other with this plate promotes gear 5 rotations, another gear 5 that the number of teeth is identical on the connecting shaft rotates in the same way, and the tooth bar 3 that promotes to link to each other with right side clamping plate 2 moves, namely two clamping plate movement velocity size is identical, direction is opposite, close look at the swing realizes that self-centering clamps.If there is mechanical mechanism to coordinate 1 action of two cylinders, when source of the gas during simultaneously to two cylinder 1 air feed, because that gas distributes is irregular, and gas has compressibility, and two cylinder 1 actions are inconsistent, cause the movement travel difference, two clamping plate 2 stroke differences, namely anchor clamps can not self-centering.
Claims (3)
1. self-centering fixture, it is characterized in that, comprise cylinder (1), clamping plate (2), tooth bar (3), clamp body (4), gear (5), guide post (6), connecting shaft (7), base (8), described clamp body (4) is fixed on the base (8), described clamp body (4) intermediate lateral is provided with connecting shaft (7), connecting shaft (7) two ends are connected with gear (5) respectively, be respectively equipped with tooth bar with matching (3) on the gear (5), two tooth bars (3) are connected with clamping plate (2) respectively, clamping plate (2) links to each other with cylinder (1) respectively, two cylinders (1) are symmetrical distribution, link to each other by two guide posts (6) between two cylinders (1), two guide posts (6) symmetry vertically is respectively in connecting shaft (7) both sides.
2. a kind of self-centering fixture according to claim 1 is characterized in that, the number of teeth of described two gears (5) is identical.
3. a kind of self-centering fixture according to claim 1 is characterized in that, described two gears (5) are centrosymmetric, and two tooth bars (3) are centrosymmetric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320050949 CN203171473U (en) | 2013-01-30 | 2013-01-30 | Self-centering fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320050949 CN203171473U (en) | 2013-01-30 | 2013-01-30 | Self-centering fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203171473U true CN203171473U (en) | 2013-09-04 |
Family
ID=49068225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320050949 Expired - Lifetime CN203171473U (en) | 2013-01-30 | 2013-01-30 | Self-centering fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203171473U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103029080A (en) * | 2013-01-30 | 2013-04-10 | 山大鲁能信息科技有限公司 | Self-centering clamp |
| CN106618616A (en) * | 2015-10-30 | 2017-05-10 | 通用电气公司 | Supporting device of X-ray detector and X-ray detection device |
| CN108372244A (en) * | 2018-04-18 | 2018-08-07 | 昆明理工大学 | A method of coining connection cross positioning and clamping device and progress test specimen assembly and disassembly |
| CN109732512A (en) * | 2017-10-16 | 2019-05-10 | 李德兰 | A kind of working method of pipe fitting end fixed mechanism |
| CN113001220A (en) * | 2021-02-25 | 2021-06-22 | 杭州希纳博智能机电科技有限公司 | Steel pipe clamp for pipe thread machining equipment |
-
2013
- 2013-01-30 CN CN 201320050949 patent/CN203171473U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103029080A (en) * | 2013-01-30 | 2013-04-10 | 山大鲁能信息科技有限公司 | Self-centering clamp |
| CN106618616A (en) * | 2015-10-30 | 2017-05-10 | 通用电气公司 | Supporting device of X-ray detector and X-ray detection device |
| CN106618616B (en) * | 2015-10-30 | 2022-03-15 | 通用电气公司 | Supporting device of X-ray detector and X-ray detection device |
| CN109732512A (en) * | 2017-10-16 | 2019-05-10 | 李德兰 | A kind of working method of pipe fitting end fixed mechanism |
| CN108372244A (en) * | 2018-04-18 | 2018-08-07 | 昆明理工大学 | A method of coining connection cross positioning and clamping device and progress test specimen assembly and disassembly |
| CN113001220A (en) * | 2021-02-25 | 2021-06-22 | 杭州希纳博智能机电科技有限公司 | Steel pipe clamp for pipe thread machining equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130904 |
|
| CX01 | Expiry of patent term |