CN215748682U - Rubber pad that mandrel mould both ends increase - Google Patents
Rubber pad that mandrel mould both ends increase Download PDFInfo
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- CN215748682U CN215748682U CN202023004667.9U CN202023004667U CN215748682U CN 215748682 U CN215748682 U CN 215748682U CN 202023004667 U CN202023004667 U CN 202023004667U CN 215748682 U CN215748682 U CN 215748682U
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- mandrel
- rubber pad
- copper alloy
- pressing block
- alloy thin
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Abstract
The utility model discloses a rubber pad added at two ends of a mandrel mould, which comprises the rubber pad and a part clamped by the mandrel mould and fixed by the rubber pad, wherein the part is of a copper alloy thin-wall sleeve structure, a mandrel is inserted in the hollow part of the inner wall of the part, the outer walls of two ends of the mandrel are respectively sleeved with a first pressing block and a second pressing block, and the joints of the first pressing block and the second pressing block and the two ends of the mandrel are respectively sleeved with a first gasket and a second gasket. When the copper alloy thin-wall sleeve part is produced in batch, the rubber pads are respectively added at the joint of the two end surfaces of the excircle clamp and the part to be processed, rigid compression is changed into flexible compression with a buffer device in the middle, so that the clamping force applied to the two end surfaces of the workpiece is uniformly distributed, the deformation caused by the problem of a clamping mode is fundamentally solved, the processing precision can be effectively ensured, the production efficiency is improved, the processing cost is saved, and the copper alloy thin-wall sleeve part has great market value.
Description
Technical Field
The utility model relates to the technical field of sleeve parts, in particular to a rubber pad added at two ends of a mandrel mould.
Background
Aiming at copper alloy thin-wall sleeve parts, the material strength is low, the elastic modulus is small, the copper alloy thin-wall sleeve parts are easy to deform under the action of clamping force and cutting force during machining, the linear expansion coefficient of the copper alloy is large, and the deformation is larger under the influence of cutting heat.
In the case of mass production of such parts, the mandrel clamping, axial clamping, can overcome the weak point of poor radial rigidity, but this structure does not eliminate the deformation caused by non-uniform stress points due to the microscopic unevenness existing on the clamping fixture and the pressing surfaces at both ends. The test result shows that the deformation data generated after processing is in a discrete state.
Disclosure of Invention
The utility model aims to solve the defects in the prior art and provides rubber pads added at two ends of a mandrel mould.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the rubber pads added at the two ends of the mandrel mould comprise rubber pads and parts clamped by the mandrel mould and fixed by the rubber pads, the parts are of copper alloy thin-wall sleeve structures, mandrels are inserted in hollow parts of the inner walls of the parts, first pressing blocks and second pressing blocks are respectively sleeved on the outer walls of the two ends of the mandrels, and first gaskets and second gaskets are respectively sleeved at joints of the two ends of the mandrels by the first pressing blocks and the second pressing blocks.
In a further aspect of the utility model, the component is made of ZCuZn25Al6 material.
As a further scheme of the utility model, the part has two specifications, the length of the first specification of the part is 85mm, the inner diameter of the first specification of the part is 90mm, the outer diameter of one end of the first specification of the part is 100mm +0.15mm, and the outer diameter of the other end of the first specification of the part is 100mm +0.07 mm.
As a further aspect of the utility model, the second type of dimension of the part is 90mm long, the first type of dimension of the part is 87mm in inside diameter, one end of the first type of dimension of the part is 95mm +0.15mm in outside diameter, and the other end of the first type of dimension of the part is 95mm +0.07mm in outside diameter.
As a further aspect of the utility model, the specifications of the first washer and the second washer are adapted to the specifications of the two types of parts.
The utility model has the beneficial effects that:
1. after the copper alloy thin-wall sleeve part adopts high-force brass (ZCuZn25Al6), the HB hardness of the copper alloy thin-wall sleeve part is doubled, so that the service life of the copper alloy thin-wall sleeve part can be doubled when the copper alloy thin-wall sleeve part is used in a low-speed occasion compared with that of a common bronze sleeve, and the copper alloy thin-wall sleeve part has large bearing pressure and can be suitable for a heavy-load occasion;
2. after the structure of the existing rubber-pad-free mould is improved, a rubber pad is respectively added at the joint of two end surfaces, rigid compression is changed into flexible compression with a buffer device in the middle, so that the clamping force applied to the two end surfaces of a workpiece is uniformly distributed, and the deformation caused by the problem of a clamping mode is fundamentally solved.
Drawings
FIG. 1 is a schematic side view of a cross-sectional structure of a rubber pad added to two ends of a mandrel fixture according to the present invention;
FIG. 2 is a schematic view of a half-section structure of a part of a rubber pad added at two ends of a mandrel mold according to the present invention;
fig. 3 is a table showing two types of specifications of parts of the rubber pads added to two ends of the mandrel fixture according to the present invention.
In the figure: 1. a first pressing block; 2. a first gasket; 3. a part; 4. a mandrel; 5. a second gasket; 6. and a second pressing block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-2, the rubber pad added at two ends of the mandrel mould comprises a rubber pad and a part 3 fixed by the rubber pad, wherein the part 3 is of a copper alloy thin-wall sleeve structure, a mandrel 4 is inserted in the hollow part of the inner wall of the part 3, the outer walls of two ends of the mandrel 4 are respectively sleeved with a first pressing block 1 and a second pressing block 6, and the joints of the first pressing block 1 and the second pressing block 6 and two ends of the mandrel 4 are respectively sleeved with a first gasket 2 and a second gasket 5.
Referring to fig. 3, the part 3 is made of ZCuZn25Al6 material, the part 3 has two specifications, the length of the first specification of the part 3 is 85mm, the inner diameter of the first specification of the part 3 is 90mm, the outer diameter of one end of the first specification of the part 3 is 100mm +0.15mm, the outer diameter of the other end of the first specification of the part 3 is 100mm +0.07mm, the length of the second specification of the part 3 is 90mm, the inner diameter of the first specification of the part 3 is 87mm, the outer diameter of one end of the first specification of the part 3 is 95mm +0.15mm, the outer diameter of the other end of the first specification of the part 3 is 95mm +0.07mm, and the specifications of the first gasket 2 and the second gasket 5 are matched with the two specifications of the part 3.
The working principle of the rubber pads added at the two ends of the mandrel mould is as follows:
firstly, when a copper alloy thin-wall sleeve part shown in fig. 2 is axially clamped, deformation caused by nonuniform stress points due to microscopic unevenness existing on a clamp and pressing surfaces at two ends cannot be eliminated, in order to overcome the deformation, a first gasket 2 and a second gasket 5 are respectively added at the joint positions of two end surfaces of a part 3 of a finish turning mandrel clamp shown in fig. 1, rigid pressing is changed into flexible pressing with a buffer device in the middle, so that the clamping forces applied to the two end surfaces of a workpiece are uniformly distributed, and the deformation caused by the problem of a clamping mode is fundamentally solved;
secondly, as shown in fig. 3, the copper alloy thin-walled sleeve-like part has two specifications, and the first gasket 2 and the second gasket 5 are provided with gasket specifications that are adapted to the inner and outer diameter specifications of the part 3.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", "first", "second", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (5)
1. The utility model provides a rubber pad that mandrel mould both ends increase, includes rubber pad and fixed mandrel mould part (3) of centre gripping, its characterized in that, part (3) are copper alloy thin wall sleeve structure, and the hollow portion grafting in the inner wall of part (3) has dabber (4), the both ends outer wall of dabber (4) has cup jointed first briquetting (1) and second briquetting (6) respectively, first briquetting (1) and second briquetting (6) with the both ends junction of dabber (4) has cup jointed first packing ring (2) and second packing ring (5) respectively.
2. A rubber pad added to both ends of a mandrel mould as claimed in claim 1 wherein said part (3) is made of ZCuZn25Al 6.
3. The rubber pad added to two ends of the mandrel mould as recited in claim 1, wherein the part (3) has two specifications, the length of the first specification of the part (3) is 85mm, the inner diameter of the first specification of the part (3) is 90mm, the outer diameter of one end of the first specification of the part (3) is 100mm +0.15mm, and the outer diameter of the other end of the first specification of the part (3) is 100mm +0.07 mm.
4. A rubber mat added at both ends of a mandrel mould according to claim 3, wherein the length of the second type of specification of the part (3) is 90mm, the inner diameter of the first type of specification of the part (3) is 87mm, the outer diameter of one end of the first type of specification of the part (3) is 95mm +0.15mm, and the outer diameter of the other end of the first type of specification of the part (3) is 95mm +0.07 mm.
5. A rubber pad added to two ends of a mandrel mould as claimed in claim 4, wherein the specifications of the first washer (2) and the second washer (5) are matched with the specifications of the two types of parts (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023004667.9U CN215748682U (en) | 2020-12-14 | 2020-12-14 | Rubber pad that mandrel mould both ends increase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023004667.9U CN215748682U (en) | 2020-12-14 | 2020-12-14 | Rubber pad that mandrel mould both ends increase |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215748682U true CN215748682U (en) | 2022-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023004667.9U Active CN215748682U (en) | 2020-12-14 | 2020-12-14 | Rubber pad that mandrel mould both ends increase |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215748682U (en) |
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2020
- 2020-12-14 CN CN202023004667.9U patent/CN215748682U/en active Active
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