Rear support hole machining clamp
By designing a multi-station fixture, the precise positioning of the rear bearing hole is achieved using a taper mandrel, elastic sleeve and hydraulic system, which solves the problems of low positioning accuracy and low efficiency in the existing technology, and achieves high accuracy and high efficiency Processing effect.
Patent Information
- Application Number
- CN202420995344.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-09
AI Technical Summary
The positioning accuracy of existing rear bearing hole machining fixtures is low, resulting in low position accuracy of the installation hole position after processing, low processing efficiency, and can only process one workpiece at a time.
Design a fixture including multiple clamping stations, adopting a tapered mandrel, elastic sleeve, joint rod, washer, hydraulic cylinder, end positioning block and side positioning column, and achieve the accuracy of the workpiece through elastic support and hydraulic system. Positioning and multi-station clamping at the same time.
It significantly improves the accuracy and efficiency of processing positioning, and can process multiple workpieces at the same time, reducing manufacturing costs.
Smart Images
Figure CN222199745U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of machining fixtures, in particular to a rear support hole machining fixture. Background Art
[0002] The rear support product is obtained by die casting to obtain a blank, and then the center hole and multiple mounting holes are machined. The center hole needs to be used as the positioning reference during hole machining. Since the center hole is a blank hole, its dimensional error is large. The existing fixture achieves center positioning through a positioning mandrel, but the existing fixture has low clamping and processing positioning accuracy, resulting in low position accuracy of the mounting holes after processing. In addition, the existing fixture can only clamp one workpiece for processing at a time, and its processing efficiency is not high. Therefore, it is necessary to design a fixture with high processing accuracy and high processing efficiency. Summary of the invention
[0003] In view of the above-mentioned deficiencies in the prior art, the utility model provides a rear support hole processing fixture, which has a simple structure, is convenient for clamping, has high positioning accuracy, and improves processing efficiency.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] A rear support hole processing fixture, characterized in that it includes a clamping body, a top surface of which is provided with a plurality of clamping stations, a tapered core shaft is provided in the center of each clamping station, an elastic expansion sleeve is sleeved on the tapered core shaft, a connecting rod is slidably provided on the tapered core shaft along the axial direction, a washer is sleeved on the connecting rod, one end of the washer is in contact with the elastic expansion sleeve, and the other end is provided with a locking nut for clamping the washer, the nut is threadedly provided on the end of the connecting rod, a hydraulic cylinder for driving the connecting rod axially moving is provided on the clamping body, an end positioning block is provided on the clamping body, a horizontally arranged elastic support is provided on one side of the end positioning block, a horizontally arranged side positioning column is provided on the other side of the end positioning block, and a clamping device is provided on one side of the end positioning block.
[0006] Furthermore, the clamping device includes a corner cylinder arranged on the clamping body, the corner cylinder is arranged between two adjacent front and rear clamping stations, a pressure plate is hinged on the cylinder rod of the corner cylinder, and when the pressure plate is pressed down, both ends are respectively above the end positioning blocks of the two clamping stations.
[0007] Furthermore, the elastic support is arranged on the clamp body through an elastic support seat, and the elastic support is an elastic pin structure for tightening the side of the workpiece.
[0008] Furthermore, the side positioning column is arranged on the clamp body through a side positioning seat, and the side positioning column is threadedly connected to the side positioning seat.
[0009] The beneficial effects of the utility model include: simple structure, low manufacturing cost of the fixture, positioning the center hole of the rear support hole by the elastic expansion sleeve, and then the end positioning block and the side positioning block realize complete positioning of the workpiece, which significantly improves the positioning accuracy, and multiple workstations can be clamped simultaneously, which significantly improves the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a structural schematic diagram of the utility model;
[0011] Figure 2 It is a top view of the utility model. DETAILED DESCRIPTION
[0012] The present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings.
[0013] A kind of Figure 1-2 The rear support hole processing fixture shown includes a clamp body 1, and four clamping stations are arranged on the top surface of the clamp body 1. A tapered mandrel 2 is arranged in the center of each clamping station. An elastic expansion sleeve 3 is sleeved on the tapered mandrel 2, and the center hole of the rear support is positioned by the elastic expansion sleeve 3. A connecting rod 4 is slidably arranged on the tapered mandrel 2 along the axial direction, and a washer 5 is sleeved on the connecting rod 4. One end of the washer 5 contacts the elastic expansion sleeve 3, and the other end is provided with a locking nut 6 for pressing the washer 5. The nut 6 is threadedly arranged at the end of the connecting rod 4. A hydraulic cylinder 10 for driving the connecting rod 4 to move axially is arranged on the clamp body 1. During positioning and clamping, the elastic expansion sleeve 3 is pulled to move by the hydraulic cylinder 10. The elastic expansion sleeve 3 and the tapered mandrel 2 move relative to each other, so that the elastic expansion sleeve 3 expands the center hole of the workpiece outward to achieve precise positioning, ensuring that the axis of the center hole of the workpiece is coaxial with the tapered mandrel 2. In addition, an end positioning block 7 is arranged on the clamp body 1 for positioning the bottom end face of the rear support. A horizontally arranged elastic support 8 is provided on one side of the end positioning block 7, and a horizontally arranged side positioning column 9 is provided on the other side of the end positioning block 7. The workpiece is pressed against the elastic support 8 so that the other side thereof is kept in contact with the side positioning column 9. Thus, complete positioning can be achieved. A clamping device is provided on one side of the end positioning block 7 to clamp the workpiece.
[0014] The clamping device includes a corner cylinder 11 arranged on the clamping body 1. In order to reduce the cost of the clamp and save installation space, the corner cylinder 11 of this embodiment is arranged between two adjacent front and rear clamping stations. A pressure plate 12 is hinged on the cylinder rod of the corner cylinder 11. When the pressure plate 12 is pressed down, its two ends are respectively above the end positioning blocks 7 of the two clamping stations, so as to clamp the workpieces of the two adjacent stations.
[0015] The elastic support 8 is arranged on the clamp body 1 through the elastic support seat 13. The elastic support 8 is an elastic pin structure, which is used to tighten the side of the workpiece. The side positioning column 9 is arranged on the clamp body 1 through the side positioning seat 14. The side positioning column 9 is threadedly connected to the side positioning seat 14, and the positioning end surface position of the side positioning column 9 can be adjusted.
[0016] The technical solutions provided by the embodiments of the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present invention.
Claims
1. A rear support hole processing fixture, Features: The invention comprises a clamp body (1), wherein the top surface of the clamp body (1) is provided with a plurality of clamping stations, wherein a tapered mandrel (2) is provided at the center of each clamping station, wherein an elastic expansion sleeve (3) is sleeved on the tapered mandrel (2), wherein a connecting rod (4) is slidably provided on the tapered mandrel (2) along the axial direction, wherein a washer (5) is sleeved on the connecting rod (4), wherein one end of the washer (5) contacts with the elastic expansion sleeve (3), and the other end is provided with a locking nut (6) for pressing the washer (5) tightly. 6), the nut (6) is threadedly arranged on the end of the connecting rod (4), the clamp body (1) is provided with a hydraulic cylinder (10) for driving the connecting rod (4) to move axially, the clamp body (1) is provided with an end positioning block (7), one side of the end positioning block (7) is provided with a horizontally arranged elastic support (8), the other side of the end positioning block (7) is provided with a horizontally arranged side positioning column (9), and one side of the end positioning block (7) is provided with a clamping device.
2. A rear support hole processing fixture according to claim 1, Features: The clamping device comprises a corner cylinder (11) arranged on the clamp body (1), and the corner cylinder (11) is arranged between two adjacent clamping stations at the front and rear. A pressing plate (12) is hinged on the cylinder rod of the corner cylinder (11), and when the pressing plate (12) is pressed down, both ends are respectively above the end positioning blocks (7) of the two clamping stations.
3. A rear support hole processing fixture according to claim 1, Features: The elastic support (8) is arranged on the clamp body (1) via an elastic support seat (13); the elastic support (8) is an elastic pin structure used for tightening the side of the workpiece.
4. A rear support hole processing fixture according to claim 1, Features: The side positioning column (9) is arranged on the clamp body (1) via a side positioning seat (14), and the side positioning column (9) is threadedly connected to the side positioning seat (14).