Device for machining thin-wall bottom plane
By designing a device including body, hexagon screws and plane pins, the problem of protrusion or cracking of thin-walled rotary body parts during processing is solved, stable clamping and positioning is achieved, and production costs are reduced.
Patent Information
- Application Number
- CN202422217205.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-09-10
AI Technical Summary
In the prior art, when processing the thin-wall bottom plane of thin-walled slewing body parts, problems of protrusion or cracking are prone to occur, and the processing cost is high.
A device including a body, hexagon screw and a plane pin is designed to achieve stable clamping and positioning of thin-walled parts through the variable diameter through hole and small gap to reduce the impact of cutting force.
It effectively eliminates the problems of protrusion or rupture, reduces production costs, and achieves efficient processing of thin-wall bottom planes.
Smart Images
Figure CN223289353U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of mechanical processing and relates to a device for processing a thin-wall bottom plane. Background Art
[0002] In machining, we often encounter thin-walled rotating parts. These parts have fully threaded outer diameters, with a total thickness of only 3 to 5 mm. Their inner diameters are blind and flat-bottomed, with a bottom thickness requirement of 0.3 to 0.5 mm. The outer thread and inner diameter must be coaxial, and a wrench hole exists at the difference in thickness between the inner and outer diameters. The difficulty lies in this thin-walled bottom surface, with a thickness of 0.3 to 0.5 mm.
[0003] The current machining method uses a three-jaw thread clamp, using the wrench hole on the part to screw the internal and external threads of the threaded fixture together, and then cut the part. During machining, due to the thin bottom surface, the cutting force will cause impact on the bottom, which is prone to bulges or cracks. This method has disadvantages.
[0004] Therefore, in order to effectively protect the thin-walled bottom plane, eliminate the problem of bulge or crack, and meet the requirement of bottom size of 0.3 to 0.5 mm, it is particularly important to design a device that can realize the processing of the thin-walled bottom plane. Utility Model Content
[0005] (1) Purpose of the utility model
[0006] The purpose of the utility model is to provide a device for processing thin-walled bottom planes for machining blocked inner holes, eliminating the problem of bulge or breakage, saving tooling production costs, and realizing the processing of thin-walled bottom planes.
[0007] (2) Technical solution
[0008] In order to solve the above technical problems, the utility model provides a device for processing a thin-walled bottom plane, which includes: a main body 1, a hexagon socket screw 2, and a plane pin 3; the main body 1 is a cylindrical body with a variable diameter through hole in the center, which, from left to right, are a first hole, a second hole, and a third hole with gradually increasing diameters; the hexagon socket screw 2 is inserted from the first hole on the left side of the main body 1, and the plane pin 3 is inserted from the third hole on the right side of the main body 1, and the external thread of the screw 2 is tightened and connected with the internal thread hole opened on the left end surface of the plane pin 3; the third hole is connected with the external thread of the thin-walled part through the internal thread.
[0009] The first hole on the left side of the body 1 and the hexagon socket screw 2 are fitted with a clearance of 0.5 mm to 1 mm.
[0010] The second hole in the middle of the main body 1 and the plane pin 3 are matched with a small clearance of 0.04mm to 0.06mm.
[0011] The plane pin 3 is a cylindrical pin with a T-shaped axial section, including a left end cylinder and a right end cylinder, the left end cylinder cooperates with the second hole, and the right end cylinder cooperates with the third hole.
[0012] In the flat pin 3, the diameter of the left internal threaded hole is M2, the outer diameter of the left cylinder is D2, the outer diameter of the right cylinder is D3, the thickness of the right cylinder is L3, and the height of the flat pin 3 is L2. In the body 1, the diameter of the first hole is D, the diameter of the second hole is D1, the diameter of the third hole is M1, the depths of the second and third holes are L, and the depth of the second hole is L1. The outer diameter of the threaded end of the hexagon socket screw 2 is M.
[0013] The verticality between the bottom surface of the inner groove of the third hole and the first hole is 0.01 mm.
[0014] The bottom surface of the inner groove of the third hole is fitted with the outer circular left end surface of the plane pin 3 to form a whole.
[0015] The length of L2 is based on L, minus 0.3 to 0.5 mm, and the length of L3 is based on L1, plus 0.3 to 0.5 mm.
[0016] The third hole and the right end column are matched with a large clearance of 3mm to 4mm in inner hole size.
[0017] Among them, the left end face of the right end cylinder of the plane pin 3 is cleaned, and the left end face of the right end cylinder is completely fitted and flat with the bottom surface of the M1 inner groove of the body; the parallelism of the left and right end faces of the right end cylinder of the plane pin 3 is 0.01mm, and the right end face is fitted with the bottom surface of the inner hole of the thin-walled part.
[0018] (3) Beneficial effects
[0019] The device for processing thin-wall bottom planes provided by the above technical solution has a simple structure and is easy to operate. It can effectively reduce the impact of cutting forces, eliminate bulges or cracks, and save production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of the structure of a device for processing a thin-walled bottom plane according to the present invention;
[0021] Figure 2 This is a schematic diagram of a device body for processing a thin-walled bottom plane according to the present invention;
[0022] Figure 3 This is a schematic diagram of a hexagon socket screw in a device for processing a thin-wall bottom plane according to the present invention;
[0023] Figure 4 This is a schematic diagram of a plane pin of a device for processing a thin-wall bottom plane according to the present invention;
[0024] Numbers in the figure: 1-body, 2-hexagon socket screw, 3-plane pin. DETAILED DESCRIPTION
[0025] In order to make the purpose, content and advantages of the present invention more clear, the specific implementation methods of the present invention are further described in detail below with reference to the accompanying drawings and embodiments.
[0026] See Figures 1-4 The device for machining a thin-walled bottom plane in this embodiment includes: a body 1, a hexagon socket screw 2, and a flat pin 3; the body 1 is a cylindrical body with a variable-diameter through hole in the center, which, from left to right, are a first hole, a second hole, and a third hole with gradually increasing diameters; the hexagon socket screw 2 is inserted from the first hole on the left side of the body 1, and the flat pin 3 is inserted from the third hole on the right side of the body 1, and the external thread of the screw 2 is tightened and connected with the internal thread hole opened on the left end surface of the flat pin 3; the third hole is connected to the external thread of the thin-walled part through the internal thread.
[0027] The first hole on the left side of the main body 1 and the hexagon socket screw 2 are matched with a clearance of 0.5mm to 1mm to ensure that the hexagon socket screw passes smoothly; the second hole in the middle of the main body 1 and the flat pin 3 are matched with a small clearance of 0.04mm to 0.06mm, so that the main body and the flat pin can remain relatively stable and prevent large swings when processing parts.
[0028] The plane pin 3 is a cylindrical pin with a T-shaped axial section, including a left end cylinder and a right end cylinder. The left end cylinder cooperates with the second hole, and the right end cylinder cooperates with the third hole.
[0029] In the plane pin 3, the diameter of the internal threaded hole at the left end is recorded as M2, the outer diameter of the left end cylinder is recorded as D2, the outer diameter of the right end cylinder is recorded as D3, the thickness of the right end cylinder is recorded as L3, and the height of the plane pin 3 is recorded as L2.
[0030] In the body 1, the diameter of the first hole is denoted as D, the diameter of the second hole is denoted as D1, the diameter of the third hole is denoted as M1, the depths of the second and third holes are denoted as L, and the depth of the second hole is denoted as L1. The outer diameter of the threaded end of the hexagon socket screw 2 is denoted as M.
[0031] The bottom surface of the inner groove of the third hole and the first hole are perpendicular to each other by 0.01 mm and must be flat; the bottom surface of the inner groove of the third hole and the outer circle left end surface of the plane pin 3 are fitted together to form a whole.
[0032] The body 1 is screwed onto the part to ensure that the internal and external threads match and then fit into the bottom surface of the inner hole of the thin-walled part. The diameter D, D1 and length L, L1 can be flexibly changed according to the diameter and length of the measured part.
[0033] The hexagon socket screw 2 is a national standard screw, and the external thread M plays a connecting role to ensure that the body 1 and the flat pin 3 are firmly assembled. The external thread M can be selected according to the diameter of the parts and the connection reliability.
[0034] The length of L2 is based on L, minus 0.3 to 0.5 mm, and the length of L3 is based on L1, plus 0.3 to 0.5 mm. The diameters D2 and D3 and the lengths L2 and L3 can be flexibly changed as the diameter and length of the part being measured change.
[0035] The third hole and the right end column adopt a large clearance fit with an inner hole size of 3mm to 4mm, which can be smoothly installed into the inner hole of thin-walled parts and ensure that a large area fits the bottom surface of the inner hole, playing a role in buffering cutting force.
[0036] The left end face of the right end column of the plane pin 3 is cleaned, and it is completely fitted with the bottom surface of the M1 inner groove of the main body to ensure flatness; the parallelism of the left and right end faces of the right end column of the plane pin 3 is required to be 0.01mm, and the right end face is fitted with the bottom surface of the inner hole of the thin-walled parts, which can reduce the impact of cutting force during machining and eliminate bulges or cracks.
[0037] The working principle of the device for processing the thin-wall bottom plane in this embodiment is as follows:
[0038] To use the device of this embodiment, the device is first assembled. Hexagon socket screw 2 is inserted through the left inner hole of body 1, and flat pin 3 is inserted through the right inner hole of body 1. The external thread of screw 2 is tightened with the internal thread of flat pin 3, ensuring that the left end face D3 of flat pin 3 is completely aligned and flush with the bottom surface of the inner groove M1 of body 1. Once the device is securely assembled, the right end face D3 of flat pin 3 is 0.3-0.5 mm higher than the right end face of body 1. This dimension is the final guaranteed dimension of the bottom surface of the thin-walled part. The portion of flat pin 3 that protrudes above body 1 is crucial, facilitating measurement and crucial for controlling the 0.3-0.5 mm dimension. Then, the thin-walled part is inserted using the wrench hole in the thin-walled part, and its external thread is screwed into the internal thread of the device body 1. The right end face D3 of flat pin 3 is aligned with the bottom surface of the inner hole of the thin-walled part. After tightening, processing can begin. Similarly, the device for processing the thin-walled bottom surface remains unchanged; mass production can be achieved by simply replacing components. This device firstly realizes the clamping and positioning functions, secondly realizes the function of ensuring the thin wall size of 0.3 to 0.5 mm, and thirdly realizes the function of reducing the impact of cutting force and eliminating the problem of bulge or crack.
[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.
Claims
1. A device for processing a thin-wall bottom plane, characterized in that: include: The main body (1), the hexagon socket screw (2), and the flat pin (3); the main body (1) is a columnar body with a diameter-changing through hole in the center, which is a first hole, a second hole, and a third hole with gradually increasing diameters from left to right; the hexagon socket screw (2) is inserted from the first hole on the left side of the main body (1), and the flat pin (3) is inserted from the third hole on the right side of the main body (1); the external thread of the screw (2) is screwed and connected with the internal thread hole on the left end surface of the flat pin (3); the third hole is connected with the external thread of the thin-walled part through the internal thread; The second hole in the middle of the body (1) and the plane pin (3) are matched with a small clearance of 0.04mm to 0.06mm; The plane pin (3) is a cylindrical pin with a T-shaped axial section, comprising a left end cylinder and a right end cylinder, wherein the left end cylinder cooperates with the second hole, and the right end cylinder cooperates with the third hole.
2. The device for processing a thin-wall bottom plane according to claim 1, characterized in that: The first hole on the left side of the body (1) and the hexagon socket screw (2) are matched with a clearance of 0.5 mm to 1 mm.
3. The device for processing a thin-wall bottom plane according to claim 2, characterized in that: In the plane pin (3), the diameter of the left-end internal threaded hole is recorded as M2, the outer diameter of the left-end column is recorded as D2, the outer diameter of the right-end column is recorded as D3, the thickness of the right-end column is recorded as L3, and the height of the plane pin (3) is recorded as L2; in the body (1), the diameter of the first hole is recorded as D, the diameter of the second hole is recorded as D1, the diameter of the third hole is recorded as M1, the depths of the second hole and the third hole are recorded as L, and the depth of the second hole is recorded as L1; the outer diameter of the threaded end of the hexagon socket screw (2) is recorded as M.
4. The device for processing a thin-wall bottom plane according to claim 3, characterized in that: The perpendicularity between the bottom surface of the inner groove of the third hole and the first hole is 0.01 mm.
5. The device for processing a thin-wall bottom plane according to claim 4, characterized in that: The bottom surface of the inner groove of the third hole is fitted with the outer circular left end surface of the plane pin (3) to form a whole.
6. The device for processing a thin-wall bottom plane according to claim 5, characterized in that: The length of L2 is based on L, minus 0.3 to 0.5 mm, and the length of L3 is based on L1, plus 0.3 to 0.5 mm.
7. The device for processing a thin-wall bottom plane according to claim 6, characterized in that: The third hole and the right end column are matched with a large clearance of 3mm to 4mm in inner hole size.
8. The device for processing a thin-wall bottom plane according to claim 7, characterized in that: The left end face of the right end column of the plane pin (3) is cleaned, and the left end face of the right end column is completely flattened with the bottom face of the M1 inner groove of the body; the parallelism of the left and right end faces of the right end column of the plane pin (3) is 0.01 mm, and the right end face is flattened with the bottom face of the inner hole of the thin-walled part.