CN222405104U - A portable clamp - Google Patents
A portable clamp Download PDFInfo
- Publication number
- CN222405104U CN222405104U CN202420261256.7U CN202420261256U CN222405104U CN 222405104 U CN222405104 U CN 222405104U CN 202420261256 U CN202420261256 U CN 202420261256U CN 222405104 U CN222405104 U CN 222405104U
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- CN
- China
- Prior art keywords
- section
- clamp
- parts
- clamp body
- accuracy
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- 238000003754 machining Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000013011 mating Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Landscapes
- Jigs For Machine Tools (AREA)
Abstract
本实用新型提供了一种随行夹具，主要是为解决某种不便于直接装夹，且零件各加工部位相对位置精度及形状精度均高，必须进行多个设备多次装夹精加工才能满足产品精度的零件加工而设计的。该磨削夹具根据零件本身的特点，结合零件需要加工的部位和加工时需要注意的定位精度、装夹刚性因素设计而成，其内部子件包括6个内六角圆柱头螺钉、1个夹具体、1个棱形销。
The utility model provides a portable clamp, which is mainly designed to solve the problem of parts processing that are inconvenient to clamp directly, and the relative position accuracy and shape accuracy of each processing part of the part are high, and multiple equipment must be clamped and fine-processed multiple times to meet the product accuracy. The grinding fixture is designed according to the characteristics of the part itself, combined with the parts that need to be processed and the positioning accuracy and clamping rigidity factors that need to be paid attention to during processing. Its internal sub-components include 6 hexagon socket head screws, 1 clamp body, and 1 prismatic pin.
Description
Technical Field
The utility model relates to the field of machining, in particular to a follower fixture.
Background
Among the various mating pairs, spherical mating applications are very widespread, especially in the field of hydraulic machinery. The parts often involved in spherical mating are relatively high in requirements and have a large impact on the performance of the part, which requires that a finishing mode be used. For conventional spherical surface processing, grinding processing is generally utilized, and the required precision can be well ensured by utilizing corresponding equipment. However, the part is deformed after heat treatment due to the kidney-shaped groove with a large range, the precision of the kidney-shaped groove cannot meet the requirement, and meanwhile, the mode of directly clamping the excircle grinding surface of the part cannot meet the precision requirement.
Disclosure of utility model
The utility model provides a follower fixture which is used for meeting the positioning precision requirement of parts in the process of machining excircles, kidney grooves and spherical surfaces of the parts.
The technical scheme of the utility model is as follows:
The utility model provides a pallet, comprising:
The clamp body consists of a first section, a second section and a third section which are sequentially connected, wherein the outer diameter of the second section is the largest;
Screw holes and positioning holes for realizing part connection are formed in the second section;
Inner holes which are communicated with each other are formed in the first section, the second section and the third section;
The part is sleeved on the third section and is attached to the surface of the second section.
Preferably, the inner bore of the first section is tapered away from the end of the second section.
Preferably, the inner bore of the third section is tapered away from the end of the second section.
Preferably, the outer diameter of the second section is smaller than the outer diameter of the part.
The beneficial effects of the utility model are as follows:
The following fixture is designed according to the characteristics of the part, combines the part to be machined with the positioning precision and clamping rigidity factors to be noted, and can meet the positioning precision requirements of the part in the process of machining the excircle, the kidney-shaped groove and the spherical surface of the part.
Drawings
Fig. 1 is a schematic structural view of a follower fixture in an embodiment of the utility model.
Detailed Description
As shown in fig. 1, the utility model provides a multifunctional follower fixture aiming at the defect that the precision is difficult to stably guarantee by adopting a conventional method in the mechanical processing of the parts, and solves the problems of processing of the excircle, the kidney-shaped groove and the spherical surface of the part structure by adopting a clamping and positioning mode with reasonable structure. The fixture comprises a fixture body 2, a prismatic pin 3 and an inner hexagonal cylindrical head screw 1.
The following fixture is designed according to the characteristics of the part, the position of the part to be machined, the positioning precision to be noted and the clamping rigidity factor, wherein the inner sub-parts of the following fixture comprise 6 hexagon socket head cap screws 1, 1 fixture body 2 and 1 prismatic pin 3. The clamp body 2 comprises a first section 21, a second section 22 and a third section 23 which are sequentially connected, the outer diameter of the second section 22 is the largest, and inner holes which are communicated with each other are formed in the first section 21, the second section 22 and the third section 23.
The inner bore of the first section 21 is arranged in a tapered shape at the end far away from the second section 22, the inner bore of the third section 23 is arranged in a tapered shape at the end far away from the second section 22, and the outer diameter of the second section 23 is smaller than the outer diameter of the part.
In the clamping process, the center positioning of the part is realized through the middle hole of the part and the outer circle of the third section 23 of the clamp body 2, the positioning hole on the second section 22 of the clamp body 2, the pin hole on the part and the prismatic pin 3 are matched to realize the circumferential positioning of the part, and then the hexagon socket head cap screw 1 is matched with the nut after penetrating through the screw hole on the part and the screw hole on the second section 22 of the clamp body 2, so that the part is connected and pressed with the clamp body 2.
When the outer circle of the part is finished, according to the processing mode of the cylindrical grinding machine, the conical surfaces formed by the inner hole orifices of the first section 21 and the third section 23 of the clamp body 2 are matched with the center of the cylindrical grinding machine to be positioned, and the grinding clamp is arranged on the outer circle of the first section 21 of the clamp body 2 so as to drive the part to rotate, so that the outer circle of the part is processed.
When the part kidney-shaped groove is finished, the adopted machining mode is a vertical machining center, and the left end excircle of the part and the surface of the second section 22 of the clamp body 2 are used for clamping and positioning, so that the part kidney-shaped groove is machined.
The outer circle of the second section 22 in the middle of the clamp body 2 plays an important supporting role for parts. During the processing of the parts, particularly when grinding the spherical surfaces, the grinding wheel is in contact with the larger spherical surface of the parts, so that larger force is generated, and the parts are deformed. The outer circumference of the second section 22 reduces deformation during the machining process by using the tooling. So that a certain strength is also required for the outer circumference of the second section 22. In addition, since the surface of the second section 22 of the jig body 2 is in planar contact with the part, the flatness of the surface of the second section 22 of the jig body 2 is good in order to better reduce deformation during grinding.
When the spherical surface of the part is precisely machined, a precise inner hole grinding machine is adopted, the outer circle at the left end of the part and the surface of the second section 22 of the clamp body 2 are used for clamping and positioning the tool, the outer circle of the third section 23 of the clamp body 2 and the surface of the second section 22 of the clamp body 2 are used for positioning the part, and the grinding machining of the spherical surface of the part is realized.
In the process of tightening 6 hexagon socket head cap screws 1, uniform force is required, and the influence on the integral clamping precision caused by overlarge pressure in a certain direction is avoided.
The follower fixture well solves the processing of the part. The roughness of the spherical surface can stably reach more than Ra0.2, the surface profile of the spherical surface can stably reach within 0.005mm, and the runout of the spherical surface to a large excircle can stably reach within 0.012 mm. The coaxiality of the waist-shaped groove to the large outer circle can be stabilized to be within 0.03 mm. According to different part structures, the device can be popularized and used.
Claims (4)
1. A follower fixture, which comprises a base and a plurality of guide rails, characterized by comprising the following steps:
The clamp body consists of a first section, a second section and a third section which are sequentially connected, wherein the outer diameter of the second section is the largest;
Screw holes and positioning holes for realizing part connection are formed in the second section;
Inner holes which are communicated with each other are formed in the first section, the second section and the third section;
The part is sleeved on the third section and is attached to the surface of the second section.
2. The pallet according to claim 1, wherein the inner bore of the first section is tapered at an end remote from the second section.
3. The pallet according to claim 1, wherein the inner bore of the third section is tapered at an end remote from the second section.
4. The pallet of claim 1, wherein the second section has an outer diameter less than an outer diameter of the part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420261256.7U CN222405104U (en) | 2024-02-02 | 2024-02-02 | A portable clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420261256.7U CN222405104U (en) | 2024-02-02 | 2024-02-02 | A portable clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222405104U true CN222405104U (en) | 2025-01-28 |
Family
ID=94350602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420261256.7U Active CN222405104U (en) | 2024-02-02 | 2024-02-02 | A portable clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222405104U (en) |
-
2024
- 2024-02-02 CN CN202420261256.7U patent/CN222405104U/en active Active
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |