Annular thin-wall part deformation limiting clamp
By designing a deformation restriction fixture for ring-type thin-walled parts for CNC turning and milling processing, the problem of deformation and scrapping of ring-type thin-walled parts during processing is solved, and the stability and reliability of parts processing are achieved.
Patent Information
- Application Number
- CN202422476281.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-10-14
AI Technical Summary
During the CNC turning and milling process, ring-type thin-walled parts are prone to deformation due to poor structural rigidity, resulting in processing deformation problems. The existing clamping solutions have high requirements for operating skills, which can easily lead to excessive shape and position tolerances and cause parts to be scrapped.
A deformation restriction fixture for ring-type thin-walled parts is designed, including bottom plate, pad ring, gland and pressure plate. Through a fully limited clamping scheme and a height-adjustable pad ring, the positional relationship between the parts is in a machining state before processing.
It effectively reduces the impact of part deformation and greatly reduces the risk of part scrapping. It is suitable for the processing of all opposite-sex ring thin-walled parts.
Smart Images
Figure CN223000156U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of numerical control turning and milling processing, and particularly relates to a deformation limiting fixture for ring-shaped thin-walled parts. Background Art
[0002] In the field of numerical control turning and milling, during the process of machining parts, for the problems of poor structural rigidity of parts and machining deformation caused by ring-shaped thin walls, since general clamping schemes have relatively strict requirements for the skills of machining personnel, if the operation is improper, it is very easy to cause irreparable out-of-tolerance geometric tolerances, resulting in the scrapping of parts. Summary of the Utility Model
[0003] In order to solve the above technical problems, the utility model discloses a deformation limiting fixture for ring-shaped thin-walled parts.
[0004] The technical scheme adopted by the utility model is as follows:
[0005] A deformation limiting fixture for ring-shaped thin-walled parts, the outer edge of the ring-shaped thin-walled part is the inclined hole machining position with an inclined arc shape, the top surface is the straight hole machining position, and the center is the suspended position. The fixture includes a bottom plate, a spacer ring, a gland, and a pressing plate;
[0006] The bottom plate includes four groups of brackets and a ring plate. The brackets are symmetrically installed at the bottom of the ring plate; mounting holes are evenly opened on the outer ring of the ring plate, and a limiting ring groove is opened on the inner ring;
[0007] The spacer ring is annular, the outer shape of the top surface matches the shape of the suspended position, and it is placed under the suspended position of the ring-shaped thin-walled part and is installed on the bottom plate through an internal hexagonal flat-end set screw B; the gland is annular and presses on the suspended position; multiple groups of positioning holes and fixing holes are respectively opened on the spacer ring and the gland, and they are connected through an internal thread round pin A and fixed through an internal hexagonal countersunk head screw; the spacer ring, the ring-shaped thin-walled part, and the gland are jointly installed in the limiting ring groove to limit the ring-shaped thin-walled part from the center;
[0008] The pressing plate includes multiple groups and is installed on the bottom plate, outside the ring-shaped thin-walled part and at non-inclined hole machining positions or straight hole machining positions, for abutting and limiting the ring-shaped thin-walled part from the outside.
[0009] Lifting holes are opened on the ring plate at non-machining positions.
[0010] One end of the pressing plate abutting against the ring-shaped thin-walled part is an inclined head.
[0011] A waist-shaped hole is opened in the middle of the pressing plate and it is installed on the bottom plate through a screw; the rear side is installed on the bottom plate through an internal hexagonal flat-end set screw A.
[0012] An internal thread cylindrical pin B for pre-limiting the position of the ring-shaped thin-walled part is installed on the bottom plate.
[0013] The materials of the spacer ring and the gland are aluminum.
[0014] Compared with the prior art, the utility model has the following beneficial technical effects:
[0015] The utility model is applicable to the deformation limitation of the processing of all thin-walled parts of special-shaped rings. By using a fully limited clamping scheme for processing, the influence caused by the deformation of the parts can be effectively reduced, and the risk of part scrapping can be greatly reduced. The suspended position of the thin-walled ring parts is padded solid with a spacer ring with adjustable height. By adjusting the gland and the spacer ring, the positional relationship of each surface of the thin-walled ring parts before processing can be ensured to reach a processable state. Description of the Drawings
[0016] Figure 1 It is a schematic structural diagram of the fixture of the utility model;
[0017] Figure 2 It is a top view of the fixture of the utility model;
[0018] Figure 3 It is a schematic structural diagram of the bottom plate of the utility model;
[0019] Figure 4 It is a schematic structural diagram of the spacer ring of the utility model;
[0020] Figure 5 It is a schematic structural diagram of the gland of the utility model;
[0021] Figure 6 It is an installation schematic diagram of the spacer ring, the gland and the thin-walled ring parts of the utility model;
[0022] Figure 7 It is Figure 1 a partial enlarged schematic diagram at B in
[0023] Figure 8 It is Figure 1 a partial enlarged schematic diagram at C in
[0024] Figure 9 It is Figure 2 a D-D sectional view in
[0025] Figure 10 It is Figure 1 a partial enlarged schematic diagram at E in
[0026] In the figure, 1 is the bottom plate; 11 is the support; 12 is the ring plate; 13 is the mounting hole; 14 is the hoisting hole; 15 is the limit ring groove; 2 is the cushion ring; 21 is the positioning hole; 3 is the gland; 31 is the fixing hole; 4 is the internal thread round pin column A; 5 is the pressing plate; 51 is the waist-shaped hole; 52 is the inclined head; 6 is the internal thread round pin column B; 7 is the thin-walled ring-shaped part; 71 is the inclined hole machining position; 72 is the straight hole machining position; 73 is the suspended position; 8 is the hexagon socket flat end set screw A; 9 is the hexagon socket flat end set screw B; 10 is the hexagon socket countersunk head screw. Detailed implementation mode
[0027] The present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the accompanying drawings only.
[0028] For the thin-walled ring-shaped part 7 of the present invention to be machined with inclined holes and straight holes, the outer edge is the inclined hole machining position 71 with an inclined arc shape, the top surface is the straight hole machining position 72, and the center is the suspended position 73.
[0029] Figure 1 It is a structural schematic diagram of the fixture of the present invention. Figure 2 It is a top view of the fixture of the present invention. As shown in the figure: The thin-walled ring-shaped part deformation limiting fixture of the present invention includes a bottom plate 1, a cushion ring 2, a gland 3 and a pressing plate 5.
[0030] Figure 3 It is a structural schematic diagram of the bottom plate of the present invention. As shown in the figure: The bottom plate 1 includes four groups of supports 11 and a ring plate 12. The supports 11 are symmetrically installed at the bottom of the ring plate 12; mounting holes 13 are evenly arranged on the outer ring of the ring plate 12, and a limit ring groove 15 is arranged on the inner ring; hoisting holes 14 are arranged on the ring plate 12 at non-machining positions. Figure 7 For Figure 1 It is a partial enlarged schematic diagram at B in
[0031] Figure 4 It is a structural schematic diagram of the cushion ring of the present invention. As shown in the figure: The cushion ring 2 is annular, and the outer shape of the top surface matches the shape of the suspended position 73. It is placed under the suspended position 73 of the thin-walled ring-shaped part 7 and is installed on the bottom plate 1 through the hexagon socket flat end set screw B9.
[0032] Figure 5 It is a structural schematic diagram of the gland of the present invention. As shown in the figure: The gland 3 is annular and presses on the suspended position.
[0033] Figure 6 It is an installation schematic diagram of the cushion ring, the gland and the thin-walled ring-shaped part of the present invention. Figure 9 For Figure 2 It is the D-D sectional view in Figure 10 ForFigure 1 Partial enlarged schematic view at position E in the figure, as shown: Multiple groups of positioning holes 21 and fixing holes 31 are respectively formed on the spacer ring 2 and the gland 3, and are connected by the internal thread round pin column A4 and fixed by the hexagon socket countersunk head screw 10; The spacer ring 2, the thin-walled ring-shaped part 7 and the gland 3 are jointly installed in the limit ring groove 15 to limit the thin-walled ring-shaped part 7 from the center;
[0034] Figure 8 For Figure 1 Partial enlarged schematic view at position C in the figure, as shown: The pressing plate 5 includes multiple groups, and is installed on the bottom plate 1, outside the thin-walled ring-shaped part 7 and at a position other than the inclined hole machining position 71 or the straight hole machining position 72, for abutting and limiting the thin-walled ring-shaped part 7 from the outside. One end of the pressing plate 5 abutting against the thin-walled ring-shaped part 7 is an inclined head 52. A waist-shaped hole 51 is formed in the middle of the pressing plate 5 and is installed on the bottom plate 1 by screws; The rear side is installed on the bottom plate 1 by the hexagon socket flat end set screw A8.
[0035] During use, first pad the spacer ring 2 firmly under the suspended position 73 of the thin-walled ring-shaped part 7. The spacer ring 2 is installed on the bottom plate 1 by the hexagon socket flat end set screw B9, and the height of the spacer ring 2 is adjusted to be appropriate by tightening and loosening the hexagon socket flat end set screw B9; Then press the gland 3 on the non-machining position of the suspended position 73, connect it by the internal thread round pin column A4, and fix it by the hexagon socket countersunk head screw 10. The spacer ring 2, the thin-walled ring-shaped part 7 and the gland 3 are jointly installed in the limit ring groove 15 to realize the central limit of the thin-walled ring-shaped part 7; Finally, use the pressing plate 5 to abut and press the non-machined outer circle of the thin-walled ring-shaped part 7 to realize the abutting limit of the thin-walled ring-shaped part 7 from the outside.
Claims
1. A deformation limiting fixture for a ring-like thin-walled part, wherein the outer edge of the ring-like thin-walled part (7) is an oblique arc-shaped oblique hole processing position (71), the top surface is a straight hole processing position (72), and the center is a suspended position (73), characterized in that: The clamp comprises a base plate (1), a gasket (2), a pressure cover (3) and a pressure plate (5); The bottom plate (1) comprises four groups of brackets (11) and a ring plate (12), wherein the brackets (11) are symmetrically mounted on the bottom of the ring plate (12); the outer ring of the ring plate (12) is evenly provided with mounting holes (13), and the inner ring is provided with a limiting ring groove (15); The gasket (2) is annular, and the top surface shape matches the shape of the suspended position (73). It is placed under the suspended position (73) of the ring-like thin-walled part (7) and is installed on the base plate (1) by means of a hexagon socket flat-end set screw B (9); the pressure cover (3) is annular and is pressed on the suspended position (73); a plurality of groups of positioning holes (21) and fixing holes (31) are respectively provided on the gasket (2) and the pressure cover (3), which are connected by an internal threaded round pin A (4) and fixed by means of a hexagon socket countersunk screw (10); the gasket (2), the ring-like thin-walled part (7) and the pressure cover (3) are installed together in a limiting ring groove (15) to limit the ring-like thin-walled part (7) from the center; The pressure plates (5) include a plurality of groups, which are mounted on the bottom plate (1), outside the annular thin-walled part (7) and at non-oblique hole processing positions (71) or straight hole processing positions (72), and are used to abut and limit the annular thin-walled part (7) from the outside.
2. The deformation limiting fixture for ring-like thin-walled parts according to claim 1 is characterized in that: A hoisting hole (14) is provided on the ring plate (12) at a non-processing position.
3. The deformation limiting fixture for ring-like thin-walled parts according to claim 1 is characterized in that: One end of the pressing plate (5) abutting against the ring-like thin-walled part (7) is an inclined head (52).
4. The deformation limiting fixture for ring-like thin-walled parts according to claim 1 is characterized in that: The pressing plate (5) has a waist hole (51) in the middle and is mounted on the base plate (1) by means of screws; the rear side is mounted on the base plate (1) by means of a hexagon socket flat-end set screw A (8).
5. The deformation limiting fixture for ring-like thin-walled parts according to claim 1 is characterized in that: An internally threaded cylindrical pin B for pre-defining the position of a ring-like thin-walled part (7) is installed on the base plate (1).
6. The deformation limiting fixture for ring-like thin-walled parts according to claim 1 is characterized in that: The gasket (2) and the pressure cover (3) are made of aluminum.