CN214054483U

CN214054483U - Special fixture for turning annular thin-wall parts

Info

Publication number: CN214054483U
Application number: CN202020669311.8U
Authority: CN
Inventors: 谭继礼; 陈新; 李秋芳; 任长久; 张志宇; 王书宇
Original assignee: CITIC Dicastal Co Ltd
Current assignee: CITIC Dicastal Co Ltd
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2021-08-27
Anticipated expiration: 2030-04-28

Abstract

The utility model discloses a special fixture for turning annular thin-wall parts, which comprises a fixture body, a connecting sleeve, a clamping plate, a supporting nail, a floating positioning pin, a clamping nail, a clamping pull rod, a limiting rod, a nut, a screw A, a cylindrical helical compression spring and a screw B, wherein the fixture body is connected with a positioning sleeve of a machine tool spindle, the connecting sleeve is arranged in a through hole at the bottom of the fixture body, and the bottom end of the connecting sleeve is connected with a hydraulic pull rod of the machine tool spindle; the clamping pull rod is connected with the connecting sleeve, the nut and the clamping plate are sequentially sleeved on the clamping pull rod, and 3 clamping nails are arranged at the bottom of the clamping plate; the specific up end of anchor clamps is provided with 3 supporting nail, a certain downthehole locating pin that floats that is provided with of anchor clamps body, the bottom of locating pin that floats is provided with cylinder helical compression spring, downthehole lateral wall still is fixed with screw B, the utility model discloses can stabilize processingquality, improve production efficiency, avoid the work piece to press from both sides tight in-process simultaneously and produce and warp, satisfy the batch production demand.

Description

Special fixture for turning annular thin-wall parts

Technical Field

The utility model belongs to the technical field of the add clamping apparatus technique and specifically relates to an annular thin wall class part lathe work special fixture.

Background

The automobile engine transmission is composed of a plurality of annular aluminum alloy thin-wall parts, and the parts are characterized in that the parts generated by casting are easy to generate thermal deformation, the positioning and clamping positions of a designed and processed tool fixture are not easy to select, the workpiece stress deformation is easy to generate due to the vibration generated in the cutter feed process and the positioning and clamping errors, the parts are processed on a numerical control lathe, the workpiece is radially clamped by adopting a universal hydraulic self-centering three-jaw chuck, the workpiece deformation is easy to generate, the processing quality is unstable, and the debugging rejection rate is increased. This patent provides an annular thin wall class part lathe work special fixture based on this current situation, can stabilize processingquality, improve production efficiency, avoids work piece clamping process to produce simultaneously and warp, satisfies the batch production demand.

Disclosure of Invention

The utility model aims at providing an annular thin wall class part lathe work special fixture to solve annular thin wall aluminum alloy part casting and the tight problem that produces the deformation of processing clamp.

In order to realize the purpose, the technical scheme of the utility model is that:

a special fixture for turning annular thin-wall parts comprises a fixture body, a connecting sleeve, a clamping plate, a supporting nail, a floating positioning pin, a clamping nail, a clamping pull rod, a limiting rod, a nut, a screw A, a cylindrical spiral compression spring and a screw B, wherein the fixture body is connected with a positioning sleeve of a machine tool spindle, the connecting sleeve is arranged in a through hole at the bottom of the fixture body, and the bottom end of the connecting sleeve is connected with a hydraulic pull rod of the machine tool spindle; the clamping pull rod is connected with the connecting sleeve, the nut and the clamping plate are sequentially sleeved on the clamping pull rod, the position of the nut is fixed and used for setting the upper limit of the clamping plate, the position of the clamping plate can move, and 3 clamping nails are arranged at the bottom of the clamping plate; the upper end surface of the clamp body is provided with 3 supporting nails, and the positions of the 3 supporting nails can correspond to the 3 clamping nails one by one; a floating positioning pin is arranged in a certain hole of the clamp body, a cylindrical spiral compression spring is arranged at the bottom of the floating positioning pin, and a screw B is further fixed on the inner side wall of the hole, so that the limiting effect is achieved, and the floating positioning pin is prevented from popping up.

In one or more embodiments, the connecting sleeve is further connected with a limiting rod, and the limiting rod is used for setting lower limiting of the clamping plate.

In one or more embodiments, a plurality of screws A are fixed on the clamp body, and the clamp body is connected with a machine tool spindle positioning sleeve through the screws A.

In one or more embodiments, the nut is a hex nut, the screw a is a socket cap head screw, and the screw B is a slotted flat set screw.

In one or more embodiments, the clamp nail is made of copper.

Compared with the prior art, the beneficial effects of the utility model are that:

the special fixture for turning the annular thin-wall part is provided, so that the annular thin-wall aluminum alloy part does not deform during turning after being clamped on a numerically controlled lathe, the product processing quality is improved, the rejection rate is reduced, and the production efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application and should not be construed as unduly limiting the present application.

FIG. 1 is a schematic view of a special fixture for turning annular thin-wall parts in the application.

FIG. 2 is another schematic diagram of the special fixture for turning annular thin-wall parts in the application.

FIG. 3 is a top view of the special fixture for turning annular thin-walled parts in the present application.

FIG. 4 is a schematic cross-sectional view A-A of the special fixture for turning annular thin-wall parts in the application.

Fig. 5 is a schematic view of an annular thin-walled type part in the present application.

FIG. 6 is a clamping state diagram of the special fixture for turning annular thin-wall parts in the application.

In the figure: 1-a clamp body, 2-a connecting sleeve, 3-a clamping plate, 4-a supporting nail, 5-a floating positioning pin, 6-a clamping nail, 7-a clamping pull rod, 8-a limiting rod, 9-a nut, 10-a screw A, 11-a cylindrical spiral compression spring and 12-a screw B.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The present invention provides a flat surface processing jig, which is described below with reference to fig. 1 to 6.

Example 1:

a special turning clamp for annular thin-wall parts comprises a clamp body 1, a connecting sleeve 2, a clamping plate 3, a supporting nail 4, a floating positioning pin 5, a clamping nail 6, a clamping pull rod 7, a limiting rod 8, a nut 9, a screw A10, a cylindrical spiral compression spring 11 and a screw B12, wherein the clamp body 1 is connected with a machine tool spindle positioning sleeve, the connecting sleeve 2 is arranged in a through hole in the bottom of the clamp body 1, and the bottom end of the connecting sleeve is connected with a hydraulic pull rod of the machine tool spindle; the clamping pull rod 7 is connected with the connecting sleeve 2, the nut 9 and the clamping plate 3 are sequentially sleeved on the clamping pull rod 7, the position of the nut 9 is fixed and used for setting the upper limit of the clamping plate 3, the position of the clamping plate 3 can be moved, and 3 clamping nails 6 are arranged at the bottom of the clamping plate 3; the upper end surface of the clamp body 1 is provided with 3 supporting nails 4, and the positions of the 3 supporting nails 4 can correspond to the 3 clamping nails 6 one by one; the anchor clamps body 1 is provided with unsteady locating pin 5 in a certain downthehole, the bottom of unsteady locating pin 5 is provided with cylindrical helical compression spring 11, downthehole lateral wall still is fixed with screw B12, plays limiting displacement, prevents that unsteady locating pin 5 from popping out. The connecting sleeve 2 is further connected with a limiting rod 8, and the limiting rod 8 is used for setting lower limiting of the clamping plate (3). A plurality of screws A10 are fixed on the clamp body 1, and the clamp body 1 is connected with a machine tool spindle positioning sleeve through screws A10. The nut 9 is a hexagon nut, the screw A10 is an inner hexagon socket head cap screw, and the screw B12 is a slotted flat-end set screw. The clamping nail 6 is made of copper, so that indentation is prevented from being generated when a workpiece is clamped.

In actual work, referring to fig. 6, the whole set of fixture is connected with a numerical control lathe spindle system through the bottom end face of the fixture body 1, a workpiece is aligned to the floating positioning pin 5 and correctly placed on the 3 supporting nails 6 in a loose state of the fixture, the positioning face of the workpiece is attached to the end faces of the supporting nails 6, then the clamping plate 3 is aligned to the supporting nails 6 and manually placed on the workpiece, a hydraulic valve switch is started, the hydraulic pull rod 7 is pulled back to clamp the workpiece, and after the clamping is confirmed to be correct, the machining work can be started.

It is to be noted that 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 may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. The utility model provides an annular thin wall class part lathe work special fixture, includes the anchor clamps body (1), adapter sleeve (2), pinch-off blades (3), support nail (4), unsteady locating pin (5), press from both sides tight nail (6), press from both sides tight pull rod (7), gag lever post (8), nut (9), screw A (10), cylinder helical compression spring (11) and screw B (12), its characterized in that: the clamp body (1) is connected with a positioning sleeve of a machine tool spindle, the connecting sleeve (2) is arranged in a through hole at the bottom of the clamp body (1), and the bottom end of the connecting sleeve is connected with a hydraulic pull rod of the machine tool spindle; the clamping pull rod (7) is connected with the connecting sleeve (2), the nut (9) and the clamping plate (3) are sequentially sleeved on the clamping pull rod (7), the position of the nut (9) is fixed and used for setting the upper limit position of the clamping plate (3), the position of the clamping plate (3) can be moved, and 3 clamping nails (6) are arranged at the bottom of the clamping plate (3); the upper end surface of the clamp body (1) is provided with 3 supporting nails (4), and the positions of the 3 supporting nails (4) can correspond to the 3 clamping nails (6) one by one; the fixture is characterized in that a floating positioning pin (5) is arranged in a certain hole of the fixture body (1), a cylindrical spiral compression spring (11) is arranged at the bottom of the floating positioning pin (5), a screw B (12) is further fixed on the inner side wall of the hole, a limiting effect is achieved, and the floating positioning pin (5) is prevented from popping up.

2. The special fixture for turning the annular thin-wall part according to claim 1, wherein the fixture comprises: the connecting sleeve (2) is further connected with a limiting rod (8), and the limiting rod (8) is used for setting the lower limit of the clamping plate (3).

3. The special fixture for turning the annular thin-wall part according to claim 1, wherein the fixture comprises: a plurality of screws A (10) are fixed on the clamp body (1), and the clamp body (1) is connected with a machine tool spindle positioning sleeve through the screws A (10).

4. The special fixture for turning the annular thin-wall part according to claim 1, wherein the fixture comprises: the nut (9) is a hexagon nut, the screw A (10) is an inner hexagon socket head cap screw, and the screw B (12) is a slotted flat-end set screw.

5. The special fixture for turning the annular thin-wall part according to claim 1, wherein the fixture comprises: the clamping nails (6) are made of copper.