CN107433536B - Clamp structure for positioning and clamping center hole - Google Patents
Clamp structure for positioning and clamping center hole Download PDFInfo
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- CN107433536B CN107433536B CN201710717488.3A CN201710717488A CN107433536B CN 107433536 B CN107433536 B CN 107433536B CN 201710717488 A CN201710717488 A CN 201710717488A CN 107433536 B CN107433536 B CN 107433536B
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- base
- positioning pin
- pressure
- screw
- positioning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
- Connection Of Plates (AREA)
Abstract
The invention discloses a clamp structure for positioning and clamping a middle hole, wherein a base is in a flange plate structure form, the bottom of a positioning pin is arranged in a central hole of the base, a spring is arranged in the central hole of the base, the top surface of the spring is propped against the bottom surface of the positioning pin, a pressure rod is arranged in a square groove of the base through a rotating shaft, a lower circular washer is sleeved on a screw, the bottom surface of the lower circular washer is propped against the top surface of the pressure rod, an upper circular washer is arranged in an arc-shaped groove of the lower circular washer and sleeved on the screw, the tail part of the screw is arranged in a threaded hole of the base, the screw passes through a through hole in the pressure rod, a part is arranged on the top surface of the base and sleeved on the positioning pin, a pressure head is sleeved on the positioning pin, the bottom surface of the pressure head is propped against the top surface of the part, and a galvanized iron sheet is fixedly arranged on the outer cylindrical surface of the base through a bolt. The invention can be suitable for any processing equipment, and does not occupy the space of a processing area; the clamping device has the characteristics of low manufacturing cost, convenience in clamping, high positioning and clamping precision, long service life and the like.
Description
Technical Field
The invention belongs to the technical field of clamps, and particularly relates to a clamp structure for positioning and clamping a middle hole.
Background
Many precision parts are positioned by holes, and particularly, parts with high precision and multiple machining procedures need to be positioned by holes. For the hole diameter of more than 8mm, the hole wall of the pin inner support can be positioned and locked by oil pressure, and the mechanism has the defects that the clamp is high in cost and the equipment is required to be provided with an oil way; pressure can be applied to an inner hole of the part to cause local stress deformation and indentation, and the force for fixing the part by the clamp is a vector in the circumferential direction, so that axial positioning error can be caused. For the aperture below the positioning aperture of 4-8mm, the screw is generally used for locking at present, inevitable part scratching is caused, the positioning precision is not high, the clamping step is complicated, the screw is easy to break/slip, and the like.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a clamp structure for positioning and clamping a middle hole aiming at the defects of the prior art, which can be suitable for any processing equipment, does not need an oil pressure/air pressure system, and does not occupy the space of a processing area; the clamping device has the characteristics of low manufacturing cost, convenience in clamping, high positioning and clamping precision, long service life and the like; especially, the positioning device has no comparable advantages when aiming at positioning parts with the aperture of 4-8 mm.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
a fixture structure for mesopore positioning and clamping, wherein: including base, spring, screw, depression bar, lower circular washer, last circular washer, pressure head, tinplate and locating pin, the base be ring flange structural style, the bottom of locating pin install in the centre bore of base, the spring mounting in the centre bore of base and the top surface top of spring on the bottom surface of locating pin, the depression bar install in the square groove of base through the pivot, lower circular washer cover on the screw and down the circular washer bottom surface top on the top surface of depression bar, last circular washer install under in circular washer's the arc recess and go up the circular washer cover on the screw, the screw afterbody install in the screw hole of base and the screw passes through the through-hole on the depression bar, the top surface of base on install part and part cover on the locating pin, pressure head cover on the locating pin and pressure head bottom surface top on the top surface of part, tinplate pass through bolt fixed mounting on the outer face of cylinder of base.
In order to optimize the technical scheme, the specific measures adopted further comprise:
the pressure head is composed of a cover plate, pins and a pressure plate, the cover plate is fixedly installed on the pressure plate through the two pins, the cover plate is in a disc structure form with rectangular openings, and the pressure plate is in a structure with a rectangular groove. The rectangular opening on the cover plate is consistent with the rectangular opening on the pressing plate in position.
The pressure lever is provided with a rectangular groove.
The bottom surface of the base is provided with a cylindrical boss.
The cover plate on the pressure head is made of 45 steel and is subjected to quenching and tempering treatment.
The pressing plate on the pressing head is made of brass.
The positioning pin is made of 40Cr and is subjected to quenching and tempering treatment.
The positioning pin on the invention has the functions of positioning and compressing, two cylinders of the positioning pin are precisely matched with the base, and one cylinder is matched with a part to complete part positioning; the positioning pin is provided with two pressing surfaces which are matched with the pressing rod and a pressing part matched with the pressing plate.
The invention is suitable for any processing equipment, in particular for positioning and fixing parts with small aperture of more than 4 mm. The clamp has high clamping precision and is a perfect clamp structure for positioning the small holes in part machining. The base is provided with a square groove and an integrated pressing mechanism; the periphery of the base is provided with threaded holes, so that the flange part of the clamp is saved. The central hole of the base is matched with the positioning pin to slide and ensure the position degree of the positioning pin; two cylinders matched with the base are arranged on the locating pin, one cylinder is matched with a part to be located, the other cylinder is used for locating and guiding the part, and the other two key grooves are matched with the pressing stop blocks. The spring is arranged at the bottom end of the pin and mainly enables the pin to ascend and reset through elastic force.
The invention has the advantages that:
(1) The square groove on the base can integrate a pressing mechanism under the condition of reducing the occupied space, so that the weight of the clamp is reduced; the integrated flange hole of base also practices thrift anchor clamps spare part, reduces anchor clamps weight, reduces anchor clamps height, improves anchor clamps precision. The base is integrated with a positioning center hole, and the positioning center hole and the body are processed in one process, so that the main advantage is higher processing precision;
(2) Two cylindrical surfaces of the positioning pin can be directly matched with the positioning hole of the body, the structure is simple, and the manufacturing cost is low; the two parts of the pin are used for two cylindrical surfaces matched with the central positioning hole of the body, the mechanism reduces the manufacturing difficulty of cylindricity and simultaneously ensures the matching precision, and meanwhile, the mechanism can be matched and compressed, has compact structure and does not have quick-wear parts. The other cylindrical surface matched with the product and the two cylindrical surfaces are simultaneously ground and processed, the cylindricity is good, and the positioning precision of the packaging clamp is controlled within 0.01 mm;
(3) The pressing structure matched with the structure is simple, has better strength and can bear the maximum torsion of 50N/M.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a structural isometric view of the base of the present invention;
FIG. 3 is a top view of the base structure of the present invention;
FIG. 4 isbase:Sub>A cross-sectional view of the structure A-A of the base of the present invention;
FIG. 5 is a top view of the construction of the strut of the present invention;
FIG. 6 is a cross-sectional view of the C-C configuration of the strut of the present invention;
FIG. 7 is an exploded view of the construction of the indenter of the present invention;
fig. 8 is a schematic structural diagram of the tinplate of the present invention.
Wherein the reference numerals are: the device comprises a base 1, a spring 2, a screw 3, a pressure lever 4, a lower circular washer 5, an upper circular washer 6, a part 7, a pressure head 8, a cover plate 81, a pin 82, a pressure plate 83, a white iron sheet 9 and a positioning pin 10.
Detailed Description
The following further description of embodiments of the invention is provided in conjunction with the accompanying drawings:
a fixture structure for mesopore positioning and clamping, wherein: including base 1, spring 2, screw 3, depression bar 4, lower circular washer 5, go up circular washer 6, pressure head 8, galvanized iron sheet 9 and locating pin 10, base 1 be ring flange structural style, the bottom of locating pin 10 install in the centre bore of base 1, spring 2 install in the centre bore of base 1 and spring 2's top surface top on the bottom surface of locating pin 10, depression bar 4 install in the square groove of base 1 through the pivot, lower circular washer 5 cover on screw 3 and lower circular washer 5 bottom surface top on the top surface of depression bar 4, last circular washer 6 install in the arc recess of lower circular washer 5 and go up circular washer 6 cover on screw 3, 3 afterbody of screw install in the screw hole of base 1 and screw 3 through the through-hole on the depression bar 4, the top surface of base 1 on install part 7 and part 7 cover on locating pin 10, pressure head 8 cover on locating pin 10 and pressure head 8 bottom surface on the top surface of part 7, galvanized iron sheet 9 pass through bolt fixed mounting on the outer cylindrical surface of base 1.
In the embodiment, the pressure head 8 is composed of a cover plate 81, a pin 82 and a pressure plate 83, the cover plate 81 is fixedly mounted on the pressure plate 83 through the two pins 82, the cover plate 81 and the pressure plate 83 are both in a disc structure form with a rectangular notch, and the rectangular notch on the cover plate 81 is consistent with the rectangular notch on the pressure plate 83 in position.
In the embodiment, the pressure lever 4 is provided with a rectangular groove.
In the embodiment, a cylindrical boss is arranged on the bottom surface of the base 1.
In the embodiment, the cover plate 81 on the ram 8 is made of 45 steel and is subjected to thermal refining.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.
Claims (1)
1. The utility model provides a mesopore location and tight anchor clamps structure of clamp which characterized in that: comprises a base (1), a spring (2), a screw (3), a pressure rod (4), a lower round washer (5), an upper round washer (6), a pressure head (8), a galvanized iron sheet (9) and a positioning pin (10), wherein the base (1) is in a flange structure form, the bottom of the positioning pin (10) is arranged in a central hole of the base (1), the spring (2) is arranged in the central hole of the base (1) and the top surface of the spring (2) is pressed against the bottom surface of the positioning pin (10), the pressure rod (4) is arranged in a square groove of the base (1) through a rotating shaft, the lower round washer (5) is sleeved on the screw (3) and the bottom surface of the lower round washer (5) is pressed against the top surface of the pressure rod (4), the upper round washer (6) is arranged in an arc-shaped groove of the lower round washer (5) and the upper round washer (6) is sleeved on the screw (3), the tail part of the screw (3) is arranged in a threaded hole of the base (1) and the through a through hole of the pressure rod (4), the top surface of the base (1) is sleeved on the pressure head (10) of the positioning pin (7), and the pressure head (10) is sleeved on the positioning pin (7), the galvanized iron sheet (9) is fixedly arranged on the outer cylindrical surface of the base (1) through bolts;
the pressure head (8) consists of a cover plate (81), pins (82) and a pressure plate (83), the cover plate (81) is fixedly arranged on the pressure plate (83) through the two pins (82), the cover plate (81) and the pressure plate (83) are both in a disc structure form with rectangular openings, and the rectangular openings in the cover plate (81) are consistent with the rectangular openings in the pressure plate (83);
a rectangular groove is arranged on the compression bar (4);
a cylindrical boss is arranged on the bottom surface of the base (1);
the cover plate (81) on the pressure head (8) is made of 45 steel and is subjected to quenching and tempering treatment;
the pressing plate (83) on the pressing head (8) is made of brass;
the positioning pin (10) is made of 40Cr and is subjected to quenching and tempering treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710717488.3A CN107433536B (en) | 2017-08-21 | 2017-08-21 | Clamp structure for positioning and clamping center hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710717488.3A CN107433536B (en) | 2017-08-21 | 2017-08-21 | Clamp structure for positioning and clamping center hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107433536A CN107433536A (en) | 2017-12-05 |
| CN107433536B true CN107433536B (en) | 2023-03-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710717488.3A Active CN107433536B (en) | 2017-08-21 | 2017-08-21 | Clamp structure for positioning and clamping center hole |
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| Country | Link |
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| CN (1) | CN107433536B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109794879B (en) * | 2019-03-18 | 2023-10-10 | 西安西航集团莱特航空制造技术有限公司 | Limiting and quick-changing detection clamp for bearing seat type parts |
| CN112179286B (en) * | 2020-08-18 | 2021-12-21 | 江苏瑞尔隆盛叶轮科技有限公司 | Clamp special for GOM three-dimensional optical scanner |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB683981A (en) * | 1950-08-31 | 1952-12-10 | Dunlop Rubber Co | Improvements in chucks |
| CN201357321Y (en) * | 2008-12-18 | 2009-12-09 | 潍坊盛瑞动力机械科技有限公司 | Fixture for machining flywheel housing |
| CN202861826U (en) * | 2012-10-12 | 2013-04-10 | 芜湖永裕汽车工业有限公司 | Fixture used for rough milling and finish milling of engine camshaft bearing cap undersurface |
| CN103801952B (en) * | 2014-02-28 | 2016-03-09 | 洛阳东方动力机械有限公司 | A kind of hole machined positioning fixture |
| CN105364603B (en) * | 2015-11-27 | 2018-01-23 | 沈阳飞机工业（集团）有限公司 | New grouped spring is automatically positioned combined mechanism and its localization method |
| CN207289880U (en) * | 2017-08-21 | 2018-05-01 | 江苏瑞尔隆盛叶轮科技有限公司 | A kind of mesoporous positioning and the clamp structure clamped |
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2017
- 2017-08-21 CN CN201710717488.3A patent/CN107433536B/en active Active
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| Publication number | Publication date |
|---|---|
| CN107433536A (en) | 2017-12-05 |
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