CN216990845U - Front and back side tool clamp for cylindrical part - Google Patents
Front and back side tool clamp for cylindrical part Download PDFInfo
- Publication number
- CN216990845U CN216990845U CN202123191945.0U CN202123191945U CN216990845U CN 216990845 U CN216990845 U CN 216990845U CN 202123191945 U CN202123191945 U CN 202123191945U CN 216990845 U CN216990845 U CN 216990845U
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- positioning
- cylindrical part
- positioning block
- bottom plate
- back side
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Abstract
The utility model provides a front and back side tool clamp for a cylindrical part, which can solve the technical problem that when holes in a cross section passing through the axial lead of the cylindrical part and on two buses of the cylindrical part are machined, the positioning errors of two sets of tool clamps are large. The utility model provides a positive and negative frock clamp of cylindric part, includes bottom plate and location structure, its characterized in that: the positioning structure further comprises front and back positioning blocks and front and back positioning pins, the front and back positioning pins penetrate through the cylindrical part and are vertically intersected with the axial lead of the cylindrical part, the front and back positioning blocks are mounted on the bottom plate or the circumferential surface positioning block, and the front and back positioning blocks are used for positioning and supporting the parts, extending out of two sides of the cylindrical part, of the front and back positioning pins. The positioning structure is adopted for twice clamping and positioning of the cylindrical part, the positioning size and the positioning position of the positioning structure can be kept consistent, and the positioning error of the hole position to be processed caused by twice clamping by using two sets of tool fixtures can be effectively eliminated.
Description
Technical Field
The utility model relates to the technical field of tool fixtures, in particular to a tool fixture for the front and back surfaces of a cylindrical part.
Background
The common tool clamp can only process one process due to the limitation of a machine tool and a station, when the axes of a round hole and a long hole to be processed are distributed on two buses of a cylindrical part, as shown in fig. 3, the two buses respectively pass through a point a and a point B on the excircle profile of the cylindrical part and are vertical to the direction of a paper surface, and meanwhile, when the two buses and the axis of the cylindrical part are positioned on the same longitudinal section (namely, the section where a dot-dash line C is positioned), two tool clamps are generally required to be prepared, and one tool clamp is used for correspondingly positioning the position of one bus of the cylindrical part. Due to the fact that the sizes and the positions of the positioning structures of the two tool clamps cannot be guaranteed to be completely consistent, the positioning error of the hole position to be machined on the bus which is clamped and machined again is large.
SUMMERY OF THE UTILITY MODEL
The utility model provides a tool clamp for the front side and the back side of a cylindrical part, which can solve the technical problem that when holes on a longitudinal section passing through the axial lead of the cylindrical part and two buses of the cylindrical part are machined, the position error of a hole to be machined on the bus which is clamped and machined again is large due to the adoption of two sets of tool clamps in the prior art.
Its technical scheme is like, a positive and negative frock clamp of cylindric part, including bottom plate and location structure, location structure is including installing in the tip locating piece and the periphery locating piece of bottom plate, its characterized in that: the positioning structure further comprises a front positioning block, a back positioning block and a front positioning pin, the front positioning block and the back positioning pin penetrate through the cylindrical part and are perpendicularly intersected with the axial lead of the cylindrical part, the front positioning block and the back positioning block are installed on the bottom plate or the circumferential surface positioning block, and the front positioning block and the back positioning block are used for positioning and supporting the parts, extending out of two sides of the cylindrical part, of the front positioning pin and the back positioning pin.
Furthermore, the circumferential surface positioning blocks correspondingly penetrate through the front and back positioning pins extending out of two sides of the cylindrical part, and vertically adjustable front and back positioning blocks are respectively installed on the front and back positioning pins.
Furthermore, the front and back surface tool clamp further comprises two sets of press-fitting mechanisms, each press-fitting mechanism comprises a press plate, a screw rod and a nut, the screw rods are vertically fixed on the bottom plate, the press plates penetrate through the screw rods and then are tightly pressed through the nuts, and the nuts are in threaded fit with the screw rods.
Furthermore, two groups of the circumferential surface positioning blocks, the front and back surface positioning blocks and the front and back surface positioning pins are arranged and distributed on two sides of the bottom plate.
Furthermore, the end positioning block is provided with a positioning surface matched with the cylindrical part, and the circumferential surface positioning block is provided with a positioning groove matched with the cylindrical part.
The front and back side tool clamp of the utility model positions the position of the generatrix of the cylindrical part, which is distributed with the hole sites to be processed, through the cooperation of the front and back side positioning pins and the front and back side positioning blocks, because the front and back positioning pins are vertically intersected with the axial lead of the cylindrical part, the cylindrical part is only required to be turned over by 180 degrees, and the position of the other bus can be positioned by adopting the same front and back positioning blocks and the front and back positioning pins, meanwhile, after the cylindrical part is turned over, the original end positioning block and the original circumferential positioning block are adopted to position the end part and the circumferential surface of the part, the front and back side tool fixtures adopt the same positioning structure for twice clamping and positioning of the cylindrical part, the positioning size and the position of the positioning structure can be kept consistent, the positioning error of the hole position to be processed caused by twice clamping by using the two sets of tool fixtures can be effectively eliminated, and the processing size precision and the form and position tolerance precision of the part are improved.
Drawings
Fig. 1 is a schematic structural view of the present invention, wherein the cylindrical part is not clamped.
Fig. 2 is a schematic structural view of the present invention, wherein the cylindrical part is clamped.
Fig. 3 is a cross-sectional view of a cylindrical part to be machined according to the present invention, showing the positions of two bus bars and a pilot hole.
Detailed Description
As shown in fig. 1, 2 and 3, a front and back side tool clamp for a cylindrical part comprises a bottom plate 1 and a positioning structure, wherein the positioning structure comprises an end positioning block 2, a circumferential positioning block 3, a front and back side positioning block 4 and front and back side positioning pins 5, the end positioning block 2 and the circumferential positioning block 3 are mounted on the bottom plate, the end positioning block 2 is provided with a positioning surface (i.e. an end surface of the end positioning block facing the circumferential positioning block 3) matched with the cylindrical part P, the circumferential positioning block 3 is provided with a V-shaped positioning groove matched with the cylindrical part P, the front and back side positioning pins 5 penetrate through the cylindrical part P and are perpendicularly intersected with an axial lead of the cylindrical part P, the front and back side positioning blocks 4 are mounted on the circumferential positioning block 3, the front and back side positioning blocks 4 are provided with a pair of end portions which respectively penetrate through the front and back side positioning pins 5 and extend out of the cylindrical part P, the front and back side positioning blocks 4 are used for positioning, The convex front and back positioning pins 5 on the two sides of the cylindrical part P are supported, the hole positions on the cylindrical part P, which are matched with the front and back positioning pins 5, are pre-machined positioning holes P3, and the positioning holes can be required by the cylindrical part per se and can also be additionally machined and formed for the hole positions (round holes P and long holes P2) distributed on two bus bars.
The press-fitting mechanism is provided with two sets of press-fitting mechanisms, each press-fitting mechanism comprises a press plate 6, a screw 7 and a nut, the screw 7 is vertically fixed on the bottom plate 1, the press plates 6 penetrate through the screw 7 and then are pressed tightly through the nuts, and the nuts are in threaded fit with the screw 7.
Two groups of circumferential surface positioning blocks 3, front and back positioning blocks 4 and front and back positioning pins 5 are arranged on two sides of the bottom plate 1, and two cylindrical parts P can be processed simultaneously, so that the processing efficiency is further improved.
The front and back positioning blocks are preferably vertically adjustable, and the height of the front and back positioning pins is adjusted through the front and back positioning blocks so as to adapt to cylindrical parts with different diameters.
The part clamping principle of the tool clamp is as follows:
the positioning part is provided with one bus position of a hole to be processed, the front and back positioning pins 5 penetrate through the cylindrical part P, the cylindrical part is placed in the V-shaped positioning groove of the circumferential surface positioning block 3, the left end of the cylindrical part is positioned and attached to the positioning surface on the right side of the end positioning block 2, the front and back positioning pins penetrating through the cylindrical part are positioned and supported on the front and back positioning blocks 4, and then the cylindrical part is pressed tightly through the two pressing plates 6;
the positioning part is provided with the other bus position of the hole to be processed, the pressing plate is loosened, the cylindrical part is rotated by 180 degrees, the cylindrical part is still positioned by the original positioning structure, specifically, the circumferential surface of the cylindrical part is positioned by the circumferential surface positioning block 3, the left end of the cylindrical part is positioned by the positioning surface of the end positioning block 2, the front and back positioning blocks 4 are used for positioning and supporting the front and back positioning pins penetrating through the part, and then the cylindrical part is pressed tightly by the two pressing plates 6.
Claims (5)
1. The utility model provides a positive and negative frock clamp of cylindric part, includes bottom plate and location structure, location structure is including installing in the tip locating piece and the periphery locating piece of bottom plate, its characterized in that: the positioning structure further comprises a front positioning block, a back positioning block and a front positioning pin, the front positioning pin penetrates through the cylindrical part and is vertically intersected with the axial lead of the cylindrical part, the front positioning block and the back positioning block are mounted on the bottom plate or the circumferential positioning block, and the front positioning block and the back positioning block are used for positioning and supporting the parts, extending out of two sides of the cylindrical part, of the front positioning pin and the back positioning pin.
2. The front and back side tool clamp for the cylindrical part as claimed in claim 1, wherein: and the circumferential surface positioning blocks correspondingly penetrate through the front and back positioning pins extending out of two sides of the cylindrical part and are respectively provided with vertically adjustable front and back positioning blocks.
3. The front and back side tool clamp for the cylindrical part as claimed in claim 2, wherein: the front and back face tool clamp further comprises two sets of press-fitting mechanisms, each press-fitting mechanism comprises a press plate, a screw and a nut, the screw is vertically fixed on the bottom plate, the press plates penetrate through the screw and then are pressed tightly through the nuts, and the nuts are in threaded fit with the screw.
4. The front and back side tool clamp for cylindrical parts according to claim 3, characterized in that: the circumferential surface positioning blocks, the front and back positioning blocks and the front and back positioning pins are all provided with two groups and distributed on two sides of the bottom plate.
5. The front and back side tool clamp for cylindrical parts according to claim 4, wherein: the end positioning block is provided with a positioning surface matched with the cylindrical part, and the circumferential surface positioning block is provided with a positioning groove matched with the cylindrical part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123191945.0U CN216990845U (en) | 2021-12-19 | 2021-12-19 | Front and back side tool clamp for cylindrical part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123191945.0U CN216990845U (en) | 2021-12-19 | 2021-12-19 | Front and back side tool clamp for cylindrical part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216990845U true CN216990845U (en) | 2022-07-19 |
Family
ID=82382804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123191945.0U Active CN216990845U (en) | 2021-12-19 | 2021-12-19 | Front and back side tool clamp for cylindrical part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216990845U (en) |
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2021
- 2021-12-19 CN CN202123191945.0U patent/CN216990845U/en active Active
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