Clamping tool for machining boss through hole in outer wall of cylindrical part
By designing a clamping tool for cylindrical parts, using components such as base, guide plate, positioning plate and locking bolts to achieve high-precision positioning and support, the positioning difficulties and low accuracy of the through-hole processing of the outer wall boss of the cylindrical parts are solved, and the machining efficiency and the passing rate of the parts are improved.
Patent Information
- Application Number
- CN202420961052.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-05-07
AI Technical Summary
The machining of the outer wall boss through holes of the cylindrical parts has problems such as difficulty in positioning, low accuracy and low efficiency. Especially when using general machine tools, it is difficult to achieve high-precision slender oblique hole machining.
A clamping tool including a base, an upper guide plate, a lower guide plate, an angle positioning plate, a positioning support plate and a locking bolt is designed. Through the cooperation of these components, high-precision and reliable positioning and support of the cylindrical parts can be achieved, ensuring that the drill bit can be penetrated smoothly and the boss through holes can be accurately processed.
High-precision processing of the through holes of the outer wall boss of the cylindrical part is achieved, which improves processing accuracy and efficiency, reduces costs, and improves the pass rate of the parts.
Smart Images
Figure CN222608099U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a clamping tool for parts processing, in particular to a clamping tool for processing boss through holes on the outer wall of a cylindrical part. Background Art
[0002] Since cylindrical parts have no protruding parts for clamping and positioning, it is difficult to clamp them during local specific structure processing, such as Figure 1 The cylindrical part shown in the figure is used for aerospace equipment. Six axial oblique ribs 5 are distributed on the circumferential outer wall of the cylinder 1. There is an angle of 40′±2′ between the oblique ribs 5 and the center line of the cylinder 1. Two bosses 2 are provided on each oblique rib 5. Each boss 2 is provided with a boss through hole 3. There is also an angle of 40′±2′ between the center line of the boss through hole 3 and the center line of the cylinder 1. The center lines of the boss through holes 3 on the two bosses 2 on each oblique rib 5 are located on the same straight line. The aperture of the boss through hole 3 is very small, only 4 .5mm, and the total length between the two corresponding boss through holes 3 is 250mm, which belongs to the slender inclined hole processing; a convex strip 4 is also provided next to each boss 2, and there is a very small angle (1°-5°) between the opposite side surfaces of the convex strip 4 and the center line of the boss through hole 3, and the length direction of the convex strip 4 is the same as the length direction of the oblique rib 5. The convex strip 4 can be a component required for the function of the part itself and is retained after the drilling process is completed, or it can be a component that is present before the drilling process is completed and is removed after the drilling process is completed.
[0003] There are many difficulties in machining the boss through hole 3: How to ensure that the part is tilted at a standard angle of 40' for drilling? How to fix the part and ensure the angle is correct? How to ensure that the boss through hole 3 of φ4.5±0.01mm is machined so that the drill bit can smoothly penetrate the two bosses 2 without deviation?
[0004] In the traditional processing method of the above-mentioned boss through hole 3, if a general machine tool is used for processing, it is difficult to find the positioning reference and reliably position and clamp, the processing accuracy is not guaranteed, the part qualification rate is low, and the processing efficiency is very low; if a five-axis high-precision machine tool is used, on the one hand, the investment cost is very high and it is not suitable for small and medium-sized enterprises. On the other hand, if there is no special positioning tool for the slender inclined hole, the inclination of the mouth end is easy to meet, but because the drill bit is too long, the tail end is prone to deviation, which will also cause the part to be scrapped. Utility Model Content
[0005] The utility model aims to solve the above problems and provide a clamping tool for machining the boss through hole on the outer wall of a cylindrical part which can be positioned and clamped quickly and accurately.
[0006] The utility model achieves the above-mentioned purpose through the following technical solutions:
[0007] A clamping tool for processing a through hole of a boss on the outer wall of a cylindrical part, comprising a base, an upper guide plate, a lower guide plate, an angle positioning plate, a positioning support plate and a locking bolt, wherein the base has a vertical base vertical plane, the upper guide plate is mounted on the top of the base and its suspended end extends out of the base vertical plane, the suspended end of the upper guide plate is provided with a vertical upper guide through hole, the lower guide plate is mounted in the middle of the base vertical plane, the lower guide plate is provided with a vertical lower guide through hole and the lower guide through hole is located directly below the upper guide through hole, and the two angle positioning plates are respectively mounted on the base vertical plane and are respectively located below the upper guide plate The two positioning support plates are arranged in parallel horizontally and in parallel below the lower guide plate, and the two groups of positioning support plates are respectively arranged on the vertical plane of the base and respectively located below the two angle positioning plates. The side surfaces of the two positioning support plates of each group that are close to each other have an angle of 1°-5° with the vertical direction. The upper gap width between the side surfaces of the two positioning support plates of each group that are close to each other is greater than the lower gap width. One of the positioning support plates of each group of positioning support plates is provided with a transversely penetrating locking screw hole, and the screws of the two transverse locking bolts respectively pass through the locking screw holes on the upper and lower positioning support plates.
[0008] Preferably, in order to facilitate reliable installation and replacement of the upper guide plate for parts of different models, a mounting groove is provided on the top of the base, and a mounting screw hole is provided at the bottom of the mounting groove. The mounting screw passes through the corresponding through hole on the upper guide plate and is connected to the mounting screw hole.
[0009] Preferably, in order to facilitate reliable installation and replacement of the lower guide plate and the two angle positioning plates for parts of different models, the lower guide plate and the two angle positioning plates are respectively placed in corresponding grooves on the vertical plane of the base and fixed by screws.
[0010] Preferably, in order to improve the supporting strength of the positioning support plate, the positioning support plate is integrally formed with the base, and in order to facilitate the passage of the drill bit, the positioning support plate located below the upper guide through hole and the positioning support plate located below the lower guide through hole are respectively provided with corresponding vertical through holes.
[0011] Preferably, in order to facilitate quick assembly and disassembly operations, the locking bolt is a butterfly bolt.
[0012] The beneficial effects of the utility model are:
[0013] The utility model designs a base, an upper guide plate, a lower guide plate, an angle positioning plate, a positioning support plate and a locking bolt that match each other. When in use, two of the upper and lower arranged bosses on the outer wall of the cylinder of the cylindrical part are respectively contacted with the two angle positioning plates to realize the angular positioning of the part, and the corresponding two convex strips on the part are respectively placed from top to bottom between the two positioning support plates of the two groups of positioning support plates and reliably contact them, so that the two positioning support plates in the same group can reliably clamp the corresponding convex strips and prevent them from falling, thereby realizing the reliable supporting function, and then the locking bolt is tightened to make it press against the corresponding convex strip, thereby realizing high-precision and reliable positioning and clamping of the cylindrical part, and then high-precision processing of the boss through holes of the two upper and lower bosses can be realized, and finally the purpose of high-precision processing of the boss through holes on the outer wall of the cylindrical part by using general machine tools is realized, the processing accuracy and processing efficiency are improved, the processing cost is reduced, and the part qualification rate is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a stereogram of a cylindrical part used in aerospace equipment;
[0015] Figure 2 It is a three-dimensional diagram of the clamping tool used for processing the through hole of the boss on the outer wall of a cylindrical part according to the utility model;
[0016] Figure 3 It is a stereoscopic view of the clamping tooling used for machining the through hole of the boss on the outer wall of a cylindrical part according to the utility model when it is in use. DETAILED DESCRIPTION
[0017] The utility model is further described below in conjunction with the accompanying drawings:
[0018] like Figure 2As shown, the clamping tool for processing the through hole of the boss on the outer wall of the cylindrical part of the utility model comprises a base 6, an upper guide plate 8, a lower guide plate 14, an angle positioning plate 7, a positioning support plate 12 and a locking bolt 15. The base 6 has a vertical base vertical plane (not marked in the figure), the upper guide plate 8 is installed on the top of the base 6 and its suspended end extends out of the base vertical plane, the suspended end of the upper guide plate 8 is provided with a vertical upper guide through hole 9, the lower guide plate 14 is installed in the middle of the base vertical plane, the lower guide plate 14 is provided with a vertical lower guide through hole 13 and the lower guide through hole 13 is located directly below the upper guide through hole 9, and two angle positioning plates 7 are respectively installed on the base vertical plane and are respectively located at the upper guide Below the guide plate 8 and below the lower guide plate 14, two positioning support plates 12 arranged horizontally in parallel are a group, and the two groups of positioning support plates 12 are respectively arranged on the vertical plane of the base and are respectively located below the two angle positioning plates 7. The side surfaces of the two positioning support plates 12 of each group that are close to each other have an angle of 1°-5° with the vertical direction, and the upper gap width between the side surfaces of the two positioning support plates 12 of each group that are close to each other is greater than the lower gap width. One of the positioning support plates 12 of each group of positioning support plates 12 is provided with a horizontally through locking screw hole (not visible in the figure), and the screws of the two horizontal locking bolts 15 respectively pass through the locking screw holes on the upper and lower positioning support plates 12.
[0019] like Figure 2 As shown, the utility model also discloses the following multiple groups of more optimized specific structures:
[0020] In order to facilitate reliable installation and replacement of the upper guide plate 8 for parts of different models, a mounting groove 10 is provided on the top of the base 6, and a mounting screw hole (not visible in the figure) is provided at the bottom of the mounting groove 10. The mounting screws (not marked in the figure) pass through the corresponding through holes on the upper guide plate 8 and are connected to the mounting screw holes.
[0021] In order to facilitate reliable installation and replacement of the lower guide plate 14 and the two angle positioning plates 7 for parts of different models, the lower guide plate 14 and the two angle positioning plates 7 are respectively placed in corresponding grooves on the vertical plane of the base and fixed by screws.
[0022] In order to improve the supporting strength of the positioning support plate 12, the positioning support plate 12 is integrally formed with the base 6. In order to facilitate the passage of the drill bit, the positioning support plate 12 located below the upper guide through hole 9 and the positioning support plate 12 located below the lower guide through hole 13 are respectively provided with corresponding vertical through holes 11.
[0023] In order to facilitate quick assembly and disassembly operations, the locking bolt 15 is a butterfly bolt.
[0024] like Figure 2 and Figure 3As shown, when used, two of the bosses 2 arranged up and down on the outer wall of the cylinder body 1 of the cylindrical part are respectively contacted with two angle positioning plates 7 to realize the angular positioning of the part, and the center line of the cylinder body 1 after positioning has a certain angle with the vertical, such as an angle of 40′±2′; then the two corresponding convex strips 4 on the part are respectively placed from top to bottom between the two positioning support plates 12 of the two groups of positioning support plates 12 and are in reliable contact, so that the two positioning support plates 12 of the same group can reliably clamp the corresponding convex strips 4 and prevent them from falling, thereby realizing the reliable support function; then the locking bolt 15 is screwed Tighten it to the corresponding convex strip 4, so as to achieve high-precision and reliable positioning and clamping of the parts; then the drill bit 16 of the machine tool can be passed through the upper guide hole 9 from top to bottom and positioned above the upper boss 2; start the machine tool, the drill bit 16 rotates at high speed, and drills the boss through hole 3 on the upper boss 2, and then the drill bit 16 continues to move downward, passes through the vertical through hole 11 on the corresponding positioning support plate 12 and the lower guide through hole 13 on the lower guide plate 14 in turn, and then drills the boss through hole 3 on the lower boss 2, thus completing the high-precision processing of the boss through holes 3 on the upper and lower bosses 2. Then remove the part and rotate it 60°, re-clamp and drill, and repeat this cycle until all the boss through holes 3 are processed.
[0025] illustrate: Figure 3 The cylindrical parts shown in the figure should be unprocessed parts, but in order to facilitate better understanding, the figures all use processed cylindrical parts, which does not affect the description of the working principle of the utility model.
[0026] The above embodiments are only preferred embodiments of the present utility model and are not limitations on the technical solutions of the present utility model. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present utility model.
Claims
1. A clamping tool for processing a through hole of a boss on the outer wall of a cylindrical part, comprising a base, characterized in that: The cam is provided with a plurality of camshafts, each of which ... The positioning support plates arranged horizontally in parallel form a group, and the two groups of positioning support plates are respectively arranged on the vertical plane of the base and respectively located below the two angle positioning plates. The side surfaces of the two positioning support plates in each group that are close to each other have an angle of 1°-5° with the vertical. The upper gap width between the side surfaces of the two positioning support plates in each group that are close to each other is greater than the lower gap width. One of the positioning support plates in each group of positioning support plates is provided with a horizontally through locking screw hole, and the screws of the two horizontal locking bolts respectively pass through the locking screw holes on the upper and lower positioning support plates.
2. The clamping tool for machining the through hole of the boss on the outer wall of a cylindrical part according to claim 1, characterized in that: The top of the base is provided with a mounting groove, the bottom of the mounting groove is provided with a mounting screw hole, and the mounting screw passes through the corresponding through hole on the upper guide plate and is connected with the mounting screw hole.
3. The clamping tool for machining the through hole of the boss on the outer wall of a cylindrical part according to claim 1 or 2, characterized in that: The lower guide plate and the two angle positioning plates are respectively placed in corresponding grooves on the vertical plane of the base and fixed by screws.
4. The clamping tool for machining the through hole of the boss on the outer wall of a cylindrical part according to claim 1 or 2, characterized in that: The positioning support plate is integrally formed with the base, and the positioning support plate located below the upper guide through hole and the positioning support plate located below the lower guide through hole are respectively provided with corresponding vertical through holes.
5. The clamping tool for machining the through hole of the boss on the outer wall of a cylindrical part according to claim 1 or 2, characterized in that: The locking bolt is a butterfly bolt.