CN114310392A - Clamping device and method based on positioning and machining in same direction - Google Patents
Clamping device and method based on positioning and machining in same direction Download PDFInfo
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- CN114310392A CN114310392A CN202111680344.8A CN202111680344A CN114310392A CN 114310392 A CN114310392 A CN 114310392A CN 202111680344 A CN202111680344 A CN 202111680344A CN 114310392 A CN114310392 A CN 114310392A
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Abstract
The invention belongs to the field of mechanical manufacturing tools, and designs a clamping device and a clamping method based on the same direction of positioning and processing, wherein the device comprises a base, an adjusting and positioning structure, an angular positioning structure and a tripod force pressing block, the base is provided with a plurality of staggered transverse chutes and longitudinal chutes, chute positioning holes are arranged at the intersection points of the transverse chutes and the longitudinal chutes, the adjusting and positioning structures are used for positioning parts, the adjusting and positioning structures are arranged in the chute positioning holes through supporting screws, the tripod force pressing block is arranged on the base through a base screw, the height of the tripod force pressing block is adjusted through a base screw, and the tripod force pressing block is used for pressing the parts upwards; the angular positioning structure is arranged in the sliding groove positioning hole of the base and used for limiting the angular movement of the part.
Description
Technical Field
The invention relates to a clamping mechanism design and a use method for clamping a part forming positioning surface and a machining surface in the same direction and the same side in machining, belongs to the field of mechanical manufacturing tools, and particularly relates to a clamping device and a clamping method based on the same direction of positioning and machining.
Background
The combination of the clamp and the workpiece in the mechanical manufacturing process not only provides an accurate position with a machine tool, but also improves the stability of the processing efficiency and the processing quality. The fixture design is generally adaptable to different product configurations. The positioning surface and the processing surface of the part are respectively positioned on two sides or different sides in the milling process, which is a normal state. However, in the field of aviation, the box-shell type parts have irregular structures and more complex shapes, and the stability of a processing technology system cannot be guaranteed due to the conventional positioning and compressing layout. Therefore, the processing standard can not be unified or converted, and the product precision index is reduced.
For the structural design of aviation products, more overall structural designs are adopted to meet the performance requirements, and the processing technology of the parts is pushed to face greater challenges. For example, the casting has limited structural parts capable of meeting machining standards, and the whole profile machining part has fewer positioning and pressing positions capable of being selected due to the limitation of precision. The positioning surface and the processing surface are positioned on different sides in general, and the positioning surface provided by the clamp and the processing reference of the part are convenient for arranging the part to be processed. When the part processing surface and the positioning reference meeting the use requirement are positioned on the same side, the clamping force needs to be rearranged, and the problems of cutter path interference and unstable clamping need to be avoided.
Disclosure of Invention
The invention aims to provide a clamping device and a clamping method based on the same direction of positioning and processing, which are used for building a clamp clamping layout of which a part processing surface and a positioning datum meeting the use requirement are positioned on the same side, unifying the processing datum or adopting a position with high precision as a clamping positioning surface to form a process system with stable processing quality. The auxiliary clamping boss is added in the part processing of the integral structure design, and the repeated processing and finishing of the casting datum are avoided.
In view of the above object, the present invention is achieved by the following technical means:
a clamping device based on positioning and processing in the same direction comprises a base 1, an adjusting and positioning structure 2, an angular positioning structure 3 and a tripod force pressing block 6, wherein the base is provided with a plurality of staggered transverse chutes and longitudinal chutes, chute positioning holes are formed in the intersection points of the transverse chutes and the longitudinal chutes, the adjusting and positioning structures 2 are used for positioning parts, the adjusting and positioning structures 2 are arranged in the chute positioning holes through supporting screws 7, the tripod force pressing block 6 is arranged on the base 1 through a base screw 4, the height of the tripod force pressing block is adjusted through the base screw 4, and the tripod force pressing block 6 is used for pressing the parts upwards; the angular positioning structure 3 is arranged in a chute positioning hole of the base 1 and used for limiting the angular movement of the part.
Further, the adjusting and positioning structure 2 comprises an adjusting screw 21 and an adjusting clamping block 22, the supporting screw 7 penetrates through the adjusting clamping block 22 to enable the adjusting clamping block 22 to move on the supporting screw 7, the adjusting screw 21 is arranged on the adjusting clamping block 22, and the adjusting clamping block 22 and the part are positioned through the adjusting screw 21.
Further, still including setting up support 5 in the spout locating hole, support 5 be hollow tubular structure, support screw 7 sets up inside support 5, support screw 7 bottom and spout locating hole threaded connection.
Further, angular positioning structure 3 include two angular pad posts 32 of angular V type piece 31, supporting screw 7, two angular pad posts 32 set up on base 1, and have a clearance between two angular pad posts 32, angular V type piece 31 set up at two angular pad post 32 tops, supporting screw 7 passes between angular V type piece 31, two angular pad posts 32 clearance and the sliding groove hole threaded connection on the base, V type piece 31 can rotate around supporting screw 7.
Further, the tripod force pressing block 6 comprises a tripod force plate 61, a tripod force shaft 62 and a locking screw 63, the tripod force plate 61 is fixedly connected to the top of the tripod force shaft 62 through the locking screw 63, the bottom of the tripod force shaft 62 is in contact with the top of the base screw rod 4, and when the base screw rod is rotated, the base screw rod pushes the tripod force pressing block to press a workpiece.
Further, base screw 4 be hexagonal head screw rod, be convenient for with the spanner cooperation.
Furthermore, the adjusting and positioning structures 2 are at least three, and the adjusting and positioning structures 2 of three or more form adjusting and positioning surfaces, so that the parts are positioned.
A clamping device method based on positioning and processing in the same direction comprises the following steps:
1) determining the distribution distance between the supports through the outline of the part, and installing the supports 5 in the chute holes of the base 1;
2) adjusting, correcting and adjusting the positioning structures 2, and correcting the positioning surfaces of the adjusting screws 21 of each adjusting and positioning structure 2 to be in the same plane;
3) moving the angular positioning structure 3, adjusting the angular V-shaped block 31, enabling the angular V-shaped block 31 to be in contact with an angular reference surface, and fixing the angular position of the part;
4) and (3) placing the tripod pressure pressing block at the position of the part pressing surface, rotating the base screw rod 4 until the tripod pressure pressing block is pressed, and clamping and pressing the part by vertical upward force.
The invention has the advantages that: the invention establishes the processing position at the same side and the positioning reference meeting the processing requirement, does not need to reselect or construct a new auxiliary positioning reference, and can realize a process system with stable processing quality. The positioning and machining equidirectional parts have unified and operable benchmark, stable and easily controllable precision, stable quality and improved manufacturability, and can be widely applied to integral-structure castings and parts with complex appearance machining.
Drawings
FIG. 1 is a schematic perspective view of the fixture for positioning and machining in the same direction;
FIG. 2 is a schematic view of a three-dimensional model of an adjusting and positioning surface of the fixture for positioning and processing in the same direction;
FIG. 3 is a schematic view of a tripod force pressing block three-dimensional model of the clamp in the same direction for positioning and processing;
FIG. 4 is a perspective view of the fixture for clamping a workpiece, which is positioned and processed in the same direction according to the present invention;
FIG. 5 is a schematic view of the fixture for clamping a test workpiece in the same direction of positioning and processing.
In the figure: 1-a base; 2-adjusting the positioning structure; 21-an adjusting screw; 22-adjusting the clamping block; 3-angular positioning structure; 31-angular V-shaped block; 32-angular pillars; 4-base screw; 5-a bracket; 6-tripod force briquetting; 61-tripod force plate; 62-tripod force axis; 63-locking screws; 7-a support screw; 8-workpiece, 9-transverse chute and 10-longitudinal chute; .
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. Referring to fig. 1 to 5, a clamping device based on positioning and processing in the same direction comprises a base 1, an adjusting and positioning structure 2, an angular positioning structure 3 and a tripod force pressing block 6, wherein the base is provided with a plurality of staggered transverse sliding chutes and longitudinal sliding chutes, sliding chute positioning holes are formed in intersection points of the transverse sliding chutes and the longitudinal sliding chutes, the adjusting and positioning structures 2 are used for positioning parts, the adjusting and positioning structures 2 are arranged in the sliding chute positioning holes through supporting screws 7, the tripod force pressing block 6 is arranged on the base 1 through a base screw 4, the height of the tripod force pressing block is adjusted through the base screw 4, and the tripod force pressing block 6 is used for pressing the parts upwards; the angular positioning structure 3 is arranged in a chute positioning hole of the base 1 and used for limiting the angular movement of the part.
Further, the adjusting and positioning structure 2 comprises an adjusting screw 21 and an adjusting clamping block 22, the supporting screw 7 penetrates through the adjusting clamping block 22 to enable the adjusting clamping block 22 to move on the supporting screw 7, the adjusting screw 21 is arranged on the adjusting clamping block 22, and the adjusting clamping block 22 and the part are positioned through the adjusting screw 21.
Further, still including setting up support 5 in the spout locating hole, support 5 be hollow tubular structure, support screw 7 sets up inside support 5, support screw 7 bottom and spout locating hole threaded connection.
Further, angular positioning structure 3 include two angular pad posts 32 of angular V type piece 31, supporting screw 7, two angular pad posts 32 set up on base 1, and have a clearance between two angular pad posts 32, angular V type piece 31 set up at two angular pad post 32 tops, supporting screw 7 passes between angular V type piece 31, two angular pad posts 32 clearance and the sliding groove hole threaded connection on the base, V type piece 31 can rotate around supporting screw 7.
Further, the tripod force pressing block 6 comprises a tripod force plate 61, a tripod force shaft 62 and a locking screw 63, the tripod force plate 61 is fixedly connected to the top of the tripod force shaft 62 through the locking screw 63, the bottom of the tripod force shaft 62 is in contact with the top of the base screw rod 4, and when the base screw rod is rotated, the base screw rod pushes the tripod force pressing block to press a workpiece.
Further, base screw 4 be hexagonal head screw rod, be convenient for with the spanner cooperation.
Furthermore, the adjusting and positioning structures 2 are at least three, and the adjusting and positioning structures 2 of three or more form adjusting and positioning surfaces, so that the parts are positioned.
A clamping device method based on positioning and processing in the same direction comprises the following steps:
1) determining the distribution distance between the supports through the outline of the part, and installing the supports 5 in the chute holes of the base 1;
2) adjusting, correcting and adjusting the positioning structures 2, and correcting the positioning surfaces of the adjusting screws 21 of each adjusting and positioning structure 2 to be in the same plane;
3) moving the angular positioning structure 3, adjusting the angular V-shaped block 31, enabling the angular V-shaped block 31 to be in contact with an angular reference surface, and fixing the angular position of the part;
4) and (3) placing the tripod pressure pressing block at the position of the part pressing surface, rotating the base screw rod 4 until the tripod pressure pressing block is pressed, and clamping and pressing the part by vertical upward force.
Example (b): the following provides a preferred embodiment of the present invention. Taking the pawl shell cover body as an example, the structure approximately presents a V-shaped cover-shaped shell body, and a V-shaped feature protrudes on a rectangular frame.
Firstly, the support 5 of the fixture is distributed according to the outline and the shape of the part, the position of the adjusting clamping block 22 and the part positioning surface is installed, and the supporting screw rod press 7 is screwed down to tightly adjust the clamping block 22. The positioning surfaces of the adjusting screws 21 at the 4 positions are corrected by the dial indicator to be in the same plane, the bounce between the positioning surfaces is not more than 0.01, and when the bounce is not met, the adjusting screws 21 can be rotated to control the bounce amount;
and then, after each positioning surface of the fixture meets the requirement, positioning the part reference with the fixture, moving the angular positioning 3 to be close to the part angular reference, and fixing the fixture to form the angular reference for the part, so that the clamping and positioning efficiency is improved for subsequent batch part processing. The tripod force plate 61 of tripod force pressing block 6 is attached to the part pressing surface, the base screw rod 4 is rotated simultaneously until the tripod force pressing block 6 is pressed, meanwhile, the part is pressed by vertical upward force to clamp, the casting blank positioning surface can be further slightly moved to adjust the positioning surface 2 to vertically move up and down when slightly moved in the process, the main problem is that the positioning precision of each blank is not high and slightly different, and the stability of clamping and pressing is realized by final clamping of the clamp.
The invention discloses a clamping device and a clamping method based on the same direction of positioning and processing.A base 1 is provided with a sliding chute, a distribution bracket 5 and an angular positioning structure 3 which are fixed by a supporting screw 7; the adjusting and positioning structure 2 is arranged on the upper end surface of the bracket 5, two ends of the adjusting clamping block 22 can be screwed into the adjusting screws 21, and the adjusting and positioning structure 2 is fixed by nuts of the supporting screw 7; the angular positioning structure 3 is arranged on the base 1 through an angular cushion column 32, is vertically overlapped with an angular V-shaped block 31 and is combined together, and a supporting screw 7 penetrates through the center of the angular V-shaped block 31 to be pressed tightly; the tripod force pressing block 6 is formed by screwing the base screw 4 on the tripod force plate 61 to lock and fix the tripod force shaft 62, the end face of the tripod force shaft 62 is in right contact with the base screw 4, and the tripod force pressing block 6 is pushed to press a workpiece when the base screw 4 is rotated. The invention establishes the processing position at the same side and the positioning reference meeting the processing requirement, does not need to reselect or construct a new auxiliary positioning reference, and can realize a process system with stable processing quality. The positioning and machining equidirectional parts have unified and operable benchmark, stable and easily controllable precision, stable quality and improved manufacturability, and can be widely applied to integral-structure castings and parts with complex appearance machining.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. The utility model provides a clamping device based on location and processing syntropy which characterized in that: the tripod force pressing block is arranged on the base through a base screw rod, the height of the tripod force pressing block is adjusted through a base screw rod, and the tripod force pressing block is used for pressing parts upwards; the angular positioning structure is arranged in a sliding groove positioning hole of the base and used for limiting the angular movement of the part.
2. The clamping device based on the same direction of positioning and machining as the machining device of claim 1, wherein the clamping device comprises: the adjusting and positioning structure comprises an adjusting screw and an adjusting clamping block, the supporting screw penetrates through the adjusting clamping block to enable the adjusting clamping block to move on the supporting screw, the adjusting screw is arranged on the adjusting clamping block, and the adjusting clamping block and a part are positioned through the adjusting screw.
3. The clamping device based on the same direction of positioning and machining as the machining device of claim 2, wherein the clamping device comprises: the support is of a hollow tubular structure, the support screw is arranged inside the support, and the bottom end of the support screw is in threaded connection with the chute positioning hole.
4. The clamping device based on the same direction of positioning and machining as the machining device of claim 2, wherein the clamping device comprises: the angular positioning structure comprises an angular V-shaped block and two angular cushion columns of a supporting screw rod, the two angular cushion columns are arranged on the base 1, a gap is formed between the two angular cushion columns, the angular V-shaped block is arranged at the tops of the two angular cushion columns, the supporting screw rod penetrates through the gap between the angular V-shaped block and the two angular cushion columns and is in threaded connection with a sliding groove hole in the base, and the V-shaped block can rotate around the supporting screw rod.
5. The clamping device based on the same direction of positioning and machining as the machining device of claim 2, wherein the clamping device comprises: the tripod force pressing block comprises a tripod force plate, a tripod force shaft and a locking screw, the tripod force plate is fixedly connected to the top of the tripod force shaft through the locking screw, the bottom of the tripod force shaft is in contact with the top of the base screw, and when the base screw is rotated, the base screw pushes the tripod force pressing block to press a workpiece.
6. Clamping device based on positioning and machining in the same direction as in claim 5, characterized in that: the base screw rod is a hexagonal head screw rod, and is convenient to be matched with a wrench.
7. The clamping device based on the same direction of positioning and machining as the machining device of claim 1, wherein the clamping device comprises: the adjusting and positioning structure has at least three adjusting and positioning structures, and the three or more adjusting and positioning structures form an adjusting and positioning surface to position the part.
8. A method for clamping devices based on orientation and machining co-direction according to any of claims 1-7, characterised in that it comprises the following steps:
1) determining the distribution distance between the supports through the outline of the part, and installing the supports in the chute holes of the bottom 1;
2) adjusting the correction and adjustment positioning structures, and correcting the positioning surfaces of the adjusting screws of all the adjustment positioning structures to be in the same plane;
3) moving an angular positioning structure, adjusting an angular V-shaped block, contacting the angular V-shaped block with an angular reference surface, and fixing the angular position of the part;
4) and placing the tripod pressure pressing block at the position of the part pressing surface, rotating the base screw until the tripod pressure pressing block is pressed, and clamping and pressing the part by vertical upward force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111680344.8A CN114310392A (en) | 2021-12-30 | 2021-12-30 | Clamping device and method based on positioning and machining in same direction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111680344.8A CN114310392A (en) | 2021-12-30 | 2021-12-30 | Clamping device and method based on positioning and machining in same direction |
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| Publication Number | Publication Date |
|---|---|
| CN114310392A true CN114310392A (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111680344.8A Pending CN114310392A (en) | 2021-12-30 | 2021-12-30 | Clamping device and method based on positioning and machining in same direction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115647973A (en) * | 2022-12-13 | 2023-01-31 | 江苏大学扬州(江都)新能源汽车产业研究所 | Machining workbench for automobile parts |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4759536A (en) * | 1986-10-04 | 1988-07-26 | Nitto Kohki Co., Ltd. | Clamping device |
| CN202344284U (en) * | 2011-10-31 | 2012-07-25 | 长城汽车股份有限公司 | Automotive steering knuckle machining clamp |
| CN203993235U (en) * | 2014-06-13 | 2014-12-10 | 湖北三环锻造有限公司 | Knuckle curved boom processing two ends centre hole clamp |
| CN209078302U (en) * | 2018-10-29 | 2019-07-09 | 惠州市友联精密模具有限公司 | Positioning component for die processing unit bed |
| CN111761377A (en) * | 2020-06-10 | 2020-10-13 | 中国航发北京航科发动机控制***科技有限公司 | One-plate two-pin type universal adjustable positioning and clamping device |
-
2021
- 2021-12-30 CN CN202111680344.8A patent/CN114310392A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4759536A (en) * | 1986-10-04 | 1988-07-26 | Nitto Kohki Co., Ltd. | Clamping device |
| CN202344284U (en) * | 2011-10-31 | 2012-07-25 | 长城汽车股份有限公司 | Automotive steering knuckle machining clamp |
| CN203993235U (en) * | 2014-06-13 | 2014-12-10 | 湖北三环锻造有限公司 | Knuckle curved boom processing two ends centre hole clamp |
| CN209078302U (en) * | 2018-10-29 | 2019-07-09 | 惠州市友联精密模具有限公司 | Positioning component for die processing unit bed |
| CN111761377A (en) * | 2020-06-10 | 2020-10-13 | 中国航发北京航科发动机控制***科技有限公司 | One-plate two-pin type universal adjustable positioning and clamping device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115647973A (en) * | 2022-12-13 | 2023-01-31 | 江苏大学扬州(江都)新能源汽车产业研究所 | Machining workbench for automobile parts |
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