Auxiliary machining tool for thin-wall shell part
By designing an auxiliary machining fixture that includes a base plate, annular boss, hollow column, end cap, and clamping assembly, the problems of shell deformation and cylindrical bending during the machining of thin-walled shell parts were solved, achieving higher machining quality.
Patent Information
- Application Number
- CN202520058980.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-01-10
AI Technical Summary
Thin-walled shell parts are prone to shell deformation and cylindrical bending deformation during processing, which affects the processing quality.
An auxiliary machining fixture is used, including a base plate, an annular boss, a hollow column, an end cap, and a clamping assembly. Thin-walled shell-type parts are fixed by hexagonal screws and locking screws to prevent shell deformation and cylindrical bending.
It effectively prevents shell deformation and cylindrical bending, improving the processing quality of thin-walled shell parts.
Smart Images
Figure CN223700027U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of tooling for fixing thin-walled shell parts, and in particular to an auxiliary machining tooling for thin-walled shell parts. Background Technology
[0002] The structure of a thin-walled shell-like part is as follows: Figure 1 As shown, it includes an outer shell 1, inside which is a conical cylinder 2. The large end face of the conical cylinder 2 is welded to the inner wall of the outer shell 1, and a cylindrical cylinder 3 is welded to the small end face of the conical cylinder 2. The cylindrical cylinder 3 is connected to the conical cylinder 2. An annular plate 4 is welded to the outer cylindrical surface at the lower end of the outer shell 1. When workers in the workshop receive a batch of... Figure 1 After the thin-walled shell-type parts shown are processed, the process requires that the thin-walled shell-type parts be fixed by a clamping mechanism first, and then the outer shell 1 and the cylindrical tube 3 be machined by machining equipment, that is, grooves or through holes are machined on the outer shell 1 and the cylindrical tube 3.
[0003] The clamping mechanism includes a threaded rod fixed to the tooling table, with a pressure block threaded onto the threaded rod. The method of using this clamping mechanism to fix thin-walled shell-like parts is as follows: the worker supports the annular plate 4 of the thin-walled shell-like part on the tooling table, and then the worker rotates the pressure block, causing the pressure block to move downward along the threaded rod until the pressure block presses down on the top surface of the outer shell 1 of the thin-walled shell-like part, thereby fixing the thin-walled shell-like part to the tooling table; after the thin-walled shell-like part is fixed, the worker performs machining on the outer shell 1 and the cylindrical tube 3 using machining equipment.
[0004] However, while this clamping mechanism can secure thin-walled shell-like parts, it still suffers from the following technical drawbacks:
[0005] I. Since the wall thickness of the outer shell 1 is only 0.8mm and its mechanical strength is low, when the pressure block is pressed onto the top surface of the outer shell 1, the outer material of the outer shell 1 is easily deformed outward (while the process requires that the outer shell 1 has no deformation), thereby reducing the processing quality of thin-walled shell parts.
[0006] II. Since the cylindrical tube 3 is not supported, when the machining equipment is machining the cylindrical tube 3, the cylindrical tube 3 will bend and deform under the action of cutting force (while the process requires the cylindrical tube 3 to always be in a vertical state), which further reduces the machining quality of thin-walled shell parts.
[0007] Therefore, there is an urgent need for an auxiliary machining fixture to prevent deformation of the outer shell of thin-walled shell parts and to prevent bending deformation of the cylindrical part of thin-walled shell parts. Utility Model Content
[0008] The purpose of this utility model is to overcome the shortcomings of the prior art and provide an auxiliary processing fixture for thin-walled shell parts that prevents the outer shell of thin-walled shell parts from deforming and the cylindrical part of thin-walled shell parts from bending and deforming.
[0009] The purpose of this utility model is achieved through the following technical solution: an auxiliary processing fixture for thin-walled shell-type parts, which includes a base plate, an annular boss fixed on the top surface of the base plate, a vertically arranged hollow column fixed in the center of the annular boss, an end cap fixed at the top of the hollow column, a countersunk hole opened on the top surface of the end cap, and a plurality of threaded holes A opened on the cylindrical surface of the end cap along its circumference, each threaded hole A communicating with the countersunk hole, and an internal hexagon screw threaded into each threaded hole A, the end of the internal hexagon screw extending outside the end cap, and a spherical surface opened on the extended end;
[0010] Multiple clamping components are distributed around the annular boss on the base plate. Each clamping component includes a clamping plate, an oblong hole formed inside the clamping plate and along its length, and a threaded hole B formed on the base plate. An adjusting screw is fixed to the outer end of the clamping plate, and the head of the adjusting screw is supported on the top surface of the base plate. A locking screw that penetrates the oblong hole of the clamping plate downwards is internally threaded into the threaded hole B, and the head of the locking screw is located above the clamping plate.
[0011] The hollow column and the end cap are coaxially arranged, and the outer diameter of the end cap is larger than the diameter of the hollow column.
[0012] The internal hex screws are evenly distributed on the end cap.
[0013] The clamping components are evenly distributed on the outside of the annular boss.
[0014] The base plate is a circular plate.
[0015] This utility model has the following advantages: it prevents the outer shell of thin-walled shell parts from deforming and prevents the cylindrical part of thin-walled shell parts from bending and deforming. Attached Figure Description
[0016] Figure 1 This is a structural schematic diagram of a thin-walled shell-type part;
[0017] Figure 2 This is a schematic diagram of the structure of this utility model;
[0018] Figure 3 for Figure 2 Top view;
[0019] Figure 4 This is a schematic diagram showing the connection between the hollow column, end cap, and socket head cap screws.
[0020] Figure 5 This is a schematic diagram of the structure of an internal hexagon screw;
[0021] Figure 6 This is a schematic diagram showing the connection between the base plate and the annular boss;
[0022] Figure 7 This is a schematic diagram of the clamping plate structure;
[0023] Figure 8 A schematic diagram of a fixture used to secure the outer shell of a thin-walled shell-type part;
[0024] In the picture:
[0025] 1-Outer shell, 2-Conical cylinder, 3-Cylindrical cylinder, 4-Annular plate;
[0026] 5-Base plate, 6-Annular boss, 7-Hollow column, 8-End cap, 9-Counterhole, 10-Threaded hole A, 11-Internal hex screw, 12-Spherical surface;
[0027] 13-Clamping assembly, 14-Clamping plate, 15-Oval hole, 16-Threaded hole B, 17-Adjusting screw, 18-Locking screw. Detailed Implementation
[0028] The present invention will be further described below with reference to the accompanying drawings. The scope of protection of the present invention is not limited to the following description:
[0029] like Figures 2-7 As shown, an auxiliary machining fixture for thin-walled shell-type parts includes a base plate 5, which is a circular plate. An annular boss 6 is fixed on the top surface of the base plate 5. A vertically arranged hollow column 7 is fixed at the center of the annular boss 6. An end cap 8 is fixed at the top of the hollow column 7. A countersunk hole 9 is formed on the top surface of the end cap 8. Multiple threaded holes A10 are formed on the cylindrical surface of the end cap 8 along its circumference. Each threaded hole A10 is connected to the countersunk hole 9. Each threaded hole A10 is threaded with an internal hexagon screw 11. The internal hexagon screws 11 are evenly distributed on the end cap 8. The end of the internal hexagon screw 11 extends outside the end cap 8, and a spherical surface 12 is formed on the extended end. The hollow column 7 is coaxially arranged with the end cap 8, and the outer diameter of the end cap 8 is larger than the diameter of the hollow column 7.
[0030] Multiple clamping components 13 are distributed around the annular boss 6 on the base plate 5. The clamping components 13 are evenly distributed on the outside of the annular boss 6. Each clamping component 13 includes a clamping plate 14, an oblong hole 15 formed in the clamping plate 14 and arranged along its length, and a threaded hole B16 formed on the base plate 5. An adjusting screw 17 is fixedly connected to the outer end of the clamping plate 14. The screw head of the adjusting screw 17 is supported on the top surface of the base plate 5. A locking screw 18 is threaded into the threaded hole B16 and passes downward through the oblong hole 15 of the clamping plate 14. The screw head of the locking screw 18 is located above the clamping plate 14.
[0031] The working process of this utility model is as follows:
[0032] S1, the worker takes out a... Figure 1 The thin-walled shell-type parts shown are fitted with the conical cylinder 2 from top to bottom onto the hollow column 7, and the annular plate 4 of the thin-walled shell-type parts is supported on the top surface of the annular boss 6. At this time, each of the internal hexagon screws 11 on the end cap 8 corresponds to the upper end of the cylindrical cylinder 3 of the thin-walled shell-type parts.
[0033] S2. Fixing the outer shell 1 of the thin-walled shell-type part: The worker moves the clamping plates 14 of each clamping assembly 13 toward the annular plate 4 relative to the stationary locking screws 18 until the bottom surface of the inner end of the clamping plate 14 contacts the top surface of the annular plate 4; then the worker tightens the locking screws 18 of each clamping assembly 13. With the threaded connection between the locking screws 18 and the threaded hole B16, the screw head of the locking screw 18 presses against the top surface of the clamping plate 14, thereby pressing the annular plate 4 onto the annular boss 6 through the clamping plate 14. Since the annular plate 4 is fixed to the outer shell 1 as a whole, the tooling of the outer shell 1 of the thin-walled shell-type part is thus fixed. Figure 8 As shown;
[0034] S3. The specific operation steps for fixing the upper end of the cylindrical tube 3 of the thin-walled shell-type parts are as follows:
[0035] S31. The worker uses a tool to rotate the head of an internal hex screw 11 so that the internal hex screw 11 moves radially outward along the end cap 8. When the worker observes that the spherical surface 12 of the internal hex screw 11 is against the inner wall of the cylindrical tube 3, the worker stops tightening the internal hex screw 11.
[0036] S32. The worker repeats step S31 multiple times to ensure that the spherical surface 12 of each hexagon socket screw 11 abuts against the inner wall of the cylindrical tube 3, thereby fixing the upper end of the cylindrical tube 3 of the thin-walled shell-like part.
[0037] S4. After the thin-walled shell-type parts are fixed, the workers use machining equipment to machine the outer shell 1 and the cylindrical tube 3.
[0038] S5. After the outer shell 1 and cylindrical tube 3 of the thin-walled shell type parts are processed, the worker loosens each of the internal hexagon screws 11; then the worker loosens each of the locking screws 18, and then the worker separates the clamping plate 14 from the annular plate 4 of the thin-walled shell type parts. After separation, the worker takes away the processed thin-walled shell type parts.
[0039] As can be seen from step S2, since the clamping plate 14 clamps and fixes the annular plate 4, the outer shell 1 can be fixed. Therefore, compared with the clamping mechanism's method of directly pressing the top surface of the outer shell 1 with the pressure block, this auxiliary processing fixture effectively avoids the outer material of the outer shell 1 from deforming outward, thereby greatly improving the processing quality of thin-walled shell parts.
[0040] Furthermore, as can be seen from step S3, since the spherical surfaces 12 of each hexagonal screw 11 on the end cap 8 abut against the inner wall of the cylindrical tube 3 of the thin-walled shell-type part, the upper end of the cylindrical tube 3 is supported, thereby increasing the bending strength of the cylindrical tube 3 and effectively preventing the cylindrical tube 3 from bending and deforming when the machining equipment performs machining on the cylindrical tube 3, thereby further improving the processing quality of the thin-walled shell-type part.
[0041] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. An auxiliary machining fixture for thin-walled shell-type parts, characterized in that: It includes a base plate (5), on the top surface of the base plate (5) is a ring boss (6), a vertically arranged hollow column (7) is fixed in the center of the ring boss (6), an end cap (8) is fixed at the top of the hollow column (7), a countersunk hole (9) is opened on the top surface of the end cap (8), and a plurality of threaded holes A (10) are opened on the cylindrical surface of the end cap (8) along its circumference. Each threaded hole A (10) is connected to the countersunk hole (9), and each threaded hole A (10) is threaded with an internal hexagon screw (11). The end of the internal hexagon screw (11) extends outside the end cap (8), and a spherical surface (12) is opened on the extended end. Multiple clamping components (13) are distributed around the annular boss (6) on the base plate (5). The clamping components (13) include a clamping plate (14), a waist-shaped hole (15) opened in the clamping plate (14) and arranged along its length, and a threaded hole B (16) opened on the base plate (5). An adjusting screw (17) is fixedly connected to the outer end of the clamping plate (14). The screw head of the adjusting screw (17) is supported on the top surface of the base plate (5). A locking screw (18) is threaded in the threaded hole B (16) and passes through the waist-shaped hole (15) of the clamping plate (14) downward. The screw head of the locking screw (18) is located above the clamping plate (14).
2. The auxiliary machining fixture for thin-walled shell-type parts according to claim 1, characterized in that: The hollow column (7) is coaxially arranged with the end cap (8), and the outer diameter of the end cap (8) is larger than the diameter of the hollow column (7).
3. The auxiliary machining fixture for thin-walled shell-type parts according to claim 1, characterized in that: The internal hex screws (11) are evenly distributed on the end cap (8).
4. The auxiliary machining fixture for a thin-walled shell-type part according to claim 1, characterized in that: The clamping components (13) are evenly distributed on the outside of the annular boss (6).
5. The auxiliary machining fixture for a thin-walled shell-type part according to claim 1, characterized in that: The base plate (5) is a circular plate.