Clamp for preventing clamping deformation of thin-wall part
By designing a fixture to prevent deformation of thin-walled parts during clamping, and utilizing a combination of spherical pads and tie rods, stable clamping of thin-walled workpieces is achieved, solving the problem of workpiece deformation caused by improper clamping force and improving machining roundness and stability.
Patent Information
- Application Number
- CN202423158399.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Existing fixtures have difficulty ensuring the roundness of the machined area when clamping thin-walled workpieces. When the clamping force is too large, it can easily cause workpiece deformation, while when the clamping force is too small, the machining is unstable.
A clamping device for preventing deformation of thin-walled parts is designed, including components such as a housing, a pull head, a spherical pad, a pull rod, a baffle, and a expansion sleeve. By cooperating with the pull head and the baffle, and utilizing the movement of the spherical pad and the pull rod, the thin-walled workpiece is stably clamped, eliminating gaps and ensuring the roundness of the outer circle.
It effectively prevents deformation of thin-walled workpieces caused by clamping during processing, thus improving the processing effect and stability of the workpieces.
Smart Images
Figure CN223718344U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to workpiece fixture technical field, specifically a kind of fixture of preventing thin-walled part clamping deformation. BACKGROUND
[0002] Machine tool needs to use clamping tool to clamp and fix workpiece when turning workpiece, to facilitate stable turning of workpiece. However, when the existing clamping tool clamps and fixes thin-walled workpiece, it is difficult to ensure the roundness of the machining part, and when the clamping force is large, the workpiece is prone to deformation, and when the clamping force is small, the workpiece is prone to unstable turning. SUMMARY
[0003] The technical problem to be solved by the utility model is that the existing fixture is difficult to ensure the roundness of the machining part when clamping thin-walled workpiece.
[0004] In order to solve the above problems, the technical scheme of the utility model is as follows: a kind of fixture for preventing thin-walled part clamping deformation, including shell, the shell includes base, the base side is connected with connecting barrel, the connecting barrel inside of shell is movably provided with pull head, the inner side of pull head is movably installed with spherical pad, three pull rods are installed in the inner side of spherical pad, and the one end of pull rod is installed with pressing plate, the inside of shell is provided with baffle on the one side of pull head, and gap is provided between pull head and baffle, the baffle side is connected with expansion sleeve through a plurality of connecting rods.
[0005] Further, a limiting groove is formed on the inner wall of the shell connecting barrel, and a mounting groove is formed on the outer wall of the pull head, a positioning block is installed in the mounting groove, and the one end of the positioning block extends into the limiting groove.
[0006] Further, the three pull rods are installed in the inner side of the spherical pad in a ring array.
[0007] Further, a spring is provided between the baffle and the inner top surface of the shell connecting barrel.
[0008] Further, a guide column is fixedly connected to the one end of the pull rod, and a through hole is formed in the end of the shell connecting barrel, and the end of the guide column passes through the through hole and is connected with the pressing plate.
[0009] Further, a threaded groove is formed on the surface of the guide column, a limiting block is fixedly connected to the inner side of the threaded groove on the inner wall of the through hole, and the limiting block is a hemispherical structure.
[0010] The utility model has the advantages compared with the prior art: in the utility model, the baffle pulls the expansion sleeve to move to the left, the outer circle of the expansion sleeve rises in the hole of the thin-walled workpiece to eliminate the gap, and there is a little expansion, so that the hole is not expanded due to the roundness of the hole, and the expansion sleeve is contracted after machining, so that the roundness of the workpiece outer circle can be ensured, and the machining effect of the workpiece is improved. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 It is the structural diagram of the utility model.
[0012] As shown in the figure: 1, the shell; 2, pull head; 3, spherical pad; 4, pull rod; 5, baffle; 6, expansion sleeve; 7, pressing plate. DETAILED DESCRIPTION
[0013] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.
[0014] As Figure 1 shown, a jig for preventing deformation of a thin-walled part during clamping, comprising a housing 1, the housing 1 comprises a base, the base is connected with a connecting barrel on one side, the connecting barrel inside the housing 1 is movably provided with a pull head 2, a limiting groove is formed on the inner wall of the connecting barrel of the housing 1, an installation groove is formed on the outer wall of the pull head 2, a positioning block is installed in the installation groove, and the positioning block extends into the limiting groove at one end.
[0015] Through the setting of the positioning block and the limiting groove, the relative rotation between the housing 1 and the pull head 2 can be prevented.
[0016] A spherical pad 3 is movably installed on the inner side of the pull head 2, three pull rods 4 are installed on the inner side of the spherical pad 3 in a ring array, a guide column is fixedly connected to one end of the pull rod 4, a through hole is formed in the end of the connecting barrel of the housing 1, a pressing plate 7 is connected to the end of the guide column after passing through the through hole, a threaded groove is formed on the surface of the guide column, a limiting block located on the inner side of the threaded groove is fixedly connected to the inner wall of the through hole, the limiting block is a hemispherical structure, a baffle 5 is arranged on one side of the pull head 2 in the housing 1, and a gap is arranged between the pull head 2 and the baffle 5, and the baffle 5 is connected with an expansion sleeve 6 through a plurality of connecting rods on one side.
[0017] When the pull head 2 is pulled to the left, the spherical pad 3 is moved to the left, the pull rod 4 is moved to the left under the action of the guide column and the limiting block, and the pull rod 4 is rotated while moving to the left, so that the pressing plate 7 is rotated. Since the spherical pad 3 moves synchronously with the three pull rods 4, it can ensure that the three pressing plates 7 can rotate.
[0018] In the specific use, the machine tool is in the working state, the thin-walled workpiece is in the clamped state, the puller 2 and the baffle 5 have a gap, at this time the spring pushes against the baffle 5, the baffle 5 pulls the expansion sleeve 6 to move left, the outer circle of the expansion sleeve 6 expands in the hole of the thin-walled workpiece to eliminate the gap, and the expansion is a little, so that the hole is not expanded due to the roundness of the hole, and the expansion sleeve 6 is contracted after processing, so that the roundness of the workpiece can be ensured; when the puller 2 is pulled left, the spherical pad 3 is driven to move left, the spherical pad 3 drives the pull rod 4 to move left, and the pull rod 4 is rotated while moving left under the influence of the guide column, so that the pressing plate 7 can be rotated by 90° and pressed to the end face of the workpiece, and the spherical pad 3 ensures that the three pressing plates 7 are in the pressed state.
[0019] The non-disclosed parts in the utility model are prior art, and the specific structure and working principle will not be described again.
[0020] It should be noted that, in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.
[0021] Although embodiments of the utility model have been shown and described, it is to be understood that the embodiments are merely exemplary and that certain steps can be substituted or deleted, others can be added, and certain characteristics can be substituted for other characteristics, without departing from the spirit and scope of the utility model. The scope of the utility model is defined by the appended claims and their equivalents.
[0022] The utility model and its implementation have been described above, and this description is not restrictive, and the drawings only show one of the embodiments of the utility model, and the actual structure is not limited to this. In general, if a person skilled in the art is inspired by this, without departing from the creative purpose of the utility model, without creative design, similar structure and embodiments of the technical scheme can be designed, which should belong to the protection scope of the utility model.
Claims
1. A clamping fixture for preventing deformation of thin-walled parts during clamping, characterized in that: The utility model provides a shell (1) is connected with the connecting barrel of one side of the base, the inside activity of connecting barrel of shell (1) is equipped with the puller (2), the inside activity of puller (2) is installed with the spherical pad (3), the inside installation of spherical pad (3) is with three pull rod (4), and pull rod (4) one end is installed with the pressing plate (7), the inside of shell (1) is equipped with the baffle (5) in the one side of puller (2), and is equipped with the gap between puller (2) and baffle (5), the one side of baffle (5) is connected with the inflation sleeve (6) through a plurality of connecting rods.
2. The fixture of claim 1, wherein: The inner wall of the connecting barrel of the shell (1) is provided with a limiting groove, the outer wall of the puller (2) is provided with an installation groove, and the installation groove is provided with a positioning block.
3. The fixture of claim 1, wherein: The three pull rods (4) are arranged in an annular array on the inner side of the spherical pad (3).
4. The fixture of claim 1, wherein: The baffle (5) and the inner top surface of the connecting barrel of the shell (1) are provided with a spring.
5. The fixture of claim 1, wherein: The end of the pull rod (4) is fixedly connected with a guide column, and the end portion of the connecting barrel of the shell (1) is provided with a through hole.
6. The fixture of claim 5, wherein: The surface of the guide column is provided with a threaded groove, the inner wall of the through hole is fixedly connected with a limiting block located in the inner side of the threaded groove, and the limiting block is a hemispherical structure.