CN107433475B - Workpiece positioning fixture - Google Patents
Workpiece positioning fixture Download PDFInfo
- Publication number
- CN107433475B CN107433475B CN201710826958.XA CN201710826958A CN107433475B CN 107433475 B CN107433475 B CN 107433475B CN 201710826958 A CN201710826958 A CN 201710826958A CN 107433475 B CN107433475 B CN 107433475B
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- China
- Prior art keywords
- trapezoid
- positioning fixture
- wheels
- gears
- elliptical
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention provides a workpiece positioning fixture, which comprises a main plate, two short shafts, two trapezoid elliptical wheels, two gears and a handle, wherein the main plate is provided with a plurality of concave-convex grooves; the two short shafts penetrate through the main board, one trapezoid elliptical wheel and one gear are respectively arranged at two ends of each short shaft, the trapezoid elliptical wheels are driven by the gears to rotate, the two trapezoid elliptical wheels are located on the same side of the main board, a workpiece is clamped between the two trapezoid elliptical wheels, the two gears are located on the other side of the main board and meshed with each other, and the handle is arranged on any gear. The workpiece positioning fixture can realize quick and accurate positioning and improve the processing quality and efficiency of workpieces.
Description
Technical Field
The invention relates to a workpiece positioning clamp.
Background
The traditional workpiece positioning device adopts a fixed block and a sliding block to match and clamp the workpiece for positioning, and for some machining needing to accurately punch holes in the center of the workpiece, if the traditional positioning mode is adopted for positioning and hole finding, although the workpiece with the completely consistent size can be accurately hole found, in the actual production process, a large number of workpieces with allowable error range exist, and the traditional workpiece positioning mode is adopted for positioning and hole finding, so that the hole position machining error is larger, and the product cannot be normally used.
Disclosure of Invention
The invention aims to solve the technical problem of providing a workpiece positioning fixture which can realize quick and accurate positioning and improve the processing quality and efficiency of workpieces.
The invention is realized in the following way: a workpiece positioning fixture comprises a main plate, two short shafts, two trapezoid elliptic wheels, two gears and a handle; the two short shafts penetrate through the main board, one trapezoid elliptical wheel and one gear are respectively arranged at two ends of each short shaft, the trapezoid elliptical wheels are driven by the gears to rotate, the two trapezoid elliptical wheels are located on the same side of the main board, a workpiece is clamped between the two trapezoid elliptical wheels, the two gears are located on the other side of the main board and meshed with each other, and the handle is arranged on any gear.
Furthermore, the cross section of the trapezoid elliptical wheels is of an inverted trapezoid structure, so that workpieces can be clamped between the trapezoid elliptical wheels firmly.
Furthermore, the shape and the size of the two trapezoid elliptic wheels are consistent, and the trapezoid elliptic wheels can be used for quickly searching the center position of a workpiece.
Further, the modulus and the tooth number of the two gears are respectively consistent, and the handle drives the synchronous reverse rotation, so that the trapezoid elliptical wheel is driven to synchronously reverse rotation.
Further, each short shaft is pivoted on the main plate through a bearing.
Furthermore, a gasket is respectively arranged at the two end parts of each short shaft, the size of the gasket is larger than that of the end face of the short shaft, and the short shaft is ensured to be always positioned between the trapezoid elliptical wheel and the gear and cannot deviate.
Further, the gasket is fixed to the short shaft end face through bolts.
Further, the joint of the short shaft and the trapezoid elliptic wheel is fastened through a pin key.
Further, the joint of the short shaft and the gear is fastened through a pin key.
Further, a lining plate is arranged between the two trapezoid elliptical wheels, so that abrasion of the workpiece and the main plate is reduced.
The invention has the following advantages: through the synchronous reverse rotation of trapezoidal oval wheel of two same specifications, can press from both sides the work piece tight between two trapezoidal oval wheels, realize quick location, automatically regulated work piece position ensures that the central point of the work piece of different sizes falls into two all the time between the trapezoidal oval wheel, make things convenient for the main shaft to carry out accurate punching, improve work piece machining efficiency greatly, improve product quality.
Drawings
The invention will be further described with reference to examples of embodiments with reference to the accompanying drawings.
Fig. 1 is a schematic cross-sectional view of a workpiece positioning fixture according to the present invention.
Fig. 2 is a front view of a workpiece positioning fixture of the present invention.
Reference numerals illustrate: 1-main board, 2-short shaft, 3-trapezoid elliptic wheel, 4-gear, 5-handle, 6-bearing, 7-gasket, 8-bolt, 9-key, 10-lining board and 200-workpiece.
Detailed Description
Referring to fig. 1 and 2, the workpiece positioning fixture of the present invention includes a main board 1, two stub shafts 2, two trapezoid elliptical wheels 3, two gears 4 and a handle 5; two short shafts 2 are arranged on the main board 1 in a penetrating mode, two ends of each short shaft 2 are respectively provided with a trapezoid elliptical wheel 3 and a gear 4, the trapezoid elliptical wheels 3 are driven by the gears 4 to rotate, the trapezoid elliptical wheels 3 are located on the same side of the main board 1, a workpiece 200 is clamped between the trapezoid elliptical wheels 3, the gears 4 are located on the other side of the main board 1 and meshed with each other, and the handle 5 is arranged on any gear 4.
Preferably, the cross section of the trapezoid elliptical wheels 3 is in an inverted trapezoid structure, which is beneficial to firmly clamping the workpiece 200 between the two trapezoid elliptical wheels 3.
Preferably, the two trapezoid elliptic wheels 3 have identical shapes and sizes, and can be used for quickly searching the center position of the workpiece.
Preferably, the modulus and the number of teeth of the two gears 4 are respectively consistent, and the handle 5 drives the synchronous reverse rotation, so that the trapezoid elliptical wheel 3 is driven to synchronously reverse rotation.
Preferably, each of the stub shafts 2 is pivotally connected to the main plate 1 through a bearing 6;
preferably, a gasket 7 is respectively installed at two ends of each short shaft 2, and the size of the gasket 7 is larger than that of the end face of the short shaft, so that the short shaft 2 is ensured to be always positioned between the trapezoid elliptical wheel 3 and the gear 4 and cannot deviate; the washer 7 is fixed to the short shaft end face by a bolt 8.
Preferably, the joint of the short shaft 2 and the trapezoid elliptic wheel 3 is fastened by a pin key 9; the connection of the short shaft 2 and the gear 4 is fastened by a pin key 9.
Preferably, a lining board 10 is arranged between the two trapezoid elliptic wheels 3, so that the workpiece and the main board 1 are effectively protected from being worn.
The working principle of the invention is as follows: through rotating the handle 5, drive two gears 4 and rotate towards opposite direction to drive trapezoidal oval wheel 3 and rotate to when two trapezoidal oval wheel intervals are great towards opposite direction, put into the work piece between two trapezoidal oval wheels, later through rotating the handle, until two trapezoidal oval wheels 3 clamp the work piece just, the central point of work piece put to be the midpoint position of two trapezoidal oval wheels 3 this moment, realize quick, accurate location.
According to the invention, the workpiece can be clamped between the two trapezoid elliptical wheels through synchronous reverse rotation of the two trapezoid elliptical wheels with the same specification, so that quick positioning is realized, meanwhile, along with rotation of the trapezoid elliptical wheels, the workpiece positions are automatically adjusted, the central positions of workpieces with different sizes are ensured to always fall into the middle points of the two trapezoid elliptical wheels, accurate punching of a main shaft is facilitated, the workpiece processing efficiency is greatly improved, and the product quality is improved.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that the specific embodiments described are illustrative only and not intended to limit the scope of the invention, and that equivalent modifications and variations of the invention in light of the spirit of the invention will be covered by the claims of the present invention.
Claims (7)
1. The utility model provides a work piece positioning fixture which characterized in that: comprises a main board, two short shafts, two trapezoid elliptic wheels, two gears and a handle; the two short shafts penetrate through the main board, two ends of each short shaft are respectively provided with a trapezoid elliptical wheel and a gear, the trapezoid elliptical wheels are driven by the gears to rotate, the two trapezoid elliptical wheels are positioned on the same side of the main board, a workpiece is clamped between the two trapezoid elliptical wheels, the two gears are positioned on the other side of the main board and meshed with each other, and the handle is arranged on any gear;
the cross section of each trapezoid elliptic wheel is of an inverted trapezoid structure, the shapes and the sizes of the two trapezoid elliptic wheels are identical, the modulus and the number of teeth of the two gears are respectively identical, and the handle drives the gears to synchronously and reversely rotate.
2. The workpiece positioning fixture of claim 1, wherein: each short shaft is pivoted on the main plate through a bearing.
3. The workpiece positioning fixture of claim 1, wherein: and two ends of each short shaft are respectively provided with a gasket, and the size of each gasket is larger than that of the end face of the short shaft.
4. A workpiece positioning fixture as defined in claim 3, wherein: the gasket is fixed on the end face of the short shaft through bolts.
5. The workpiece positioning fixture of claim 1, wherein: the joint of the short shaft and the trapezoid elliptic wheel is fastened through a pin key.
6. The workpiece positioning fixture of claim 1, wherein: the joint of the short shaft and the gear is fastened through a pin key.
7. The workpiece positioning fixture of claim 1, wherein: a lining board is arranged between the two trapezoid elliptical wheels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710826958.XA CN107433475B (en) | 2017-09-14 | 2017-09-14 | Workpiece positioning fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710826958.XA CN107433475B (en) | 2017-09-14 | 2017-09-14 | Workpiece positioning fixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107433475A CN107433475A (en) | 2017-12-05 |
| CN107433475B true CN107433475B (en) | 2023-05-26 |
Family
ID=60461617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710826958.XA Active CN107433475B (en) | 2017-09-14 | 2017-09-14 | Workpiece positioning fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107433475B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108759605B (en) * | 2018-05-16 | 2023-06-13 | 中车眉山车辆有限公司 | Device and method for finding geometric centers of oblong holes and elliptical holes |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101862999A (en) * | 2010-06-28 | 2010-10-20 | 深圳市银宝山新科技股份有限公司 | Fixture |
| CN105619118A (en) * | 2014-10-30 | 2016-06-01 | 陕西天财工程造价咨询有限公司 | Two-way automatic centering fixture |
| CN206123216U (en) * | 2016-10-09 | 2017-04-26 | 诸城市义和车桥有限公司 | Leaf spring round pin axle mills circular arc anchor clamps |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3757609A (en) * | 1972-01-10 | 1973-09-11 | Cyclo Index Corp | Universal index mechanism |
| US5829568A (en) * | 1997-05-16 | 1998-11-03 | Pines Manufacturing | Safety clamp |
| CN203330909U (en) * | 2013-04-02 | 2013-12-11 | 天津市热处理研究所有限公司 | Hardness detection jig of thermal treatment rod parts |
-
2017
- 2017-09-14 CN CN201710826958.XA patent/CN107433475B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101862999A (en) * | 2010-06-28 | 2010-10-20 | 深圳市银宝山新科技股份有限公司 | Fixture |
| CN105619118A (en) * | 2014-10-30 | 2016-06-01 | 陕西天财工程造价咨询有限公司 | Two-way automatic centering fixture |
| CN206123216U (en) * | 2016-10-09 | 2017-04-26 | 诸城市义和车桥有限公司 | Leaf spring round pin axle mills circular arc anchor clamps |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107433475A (en) | 2017-12-05 |
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