Positioning and clamping tool for machining high-precision hole in circumference of cylindrical part
By designing a combined structure of base, positioning pin, positioning seat and pressing plate, the problem of difficulty in high-precision positioning of traditional clamping tools is solved, and the comprehensive high-precision positioning and efficient processing of cylindrical parts are achieved.
Patent Information
- Application Number
- CN202421202136.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-30
AI Technical Summary
Traditional clamping tooling is difficult to position the circumferential surface of cylindrical parts with high precision, resulting in low machining accuracy, low efficiency and low pass rate.
A positioning clamping tool including a base, a positioning pin, a positioning seat and a press plate is designed. The diameter of the cylindrical parts is realized through the structures such as 'L'-shaped mounting groove, circular groove, arc groove and screw hole. All-round high-precision positioning in the direction, axial and circumferential directions.
It improves positioning accuracy and machining accuracy, improves machining efficiency and the pass rate of parts, and achieves efficient machining of high-precision holes on the outer periphery of cylindrical parts.
Smart Images
Figure CN222344886U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a clamping tool for processing cylindrical parts, in particular to a positioning clamping tool for processing circumferential high-precision holes of cylindrical parts. Background Art
[0002] Cylindrical parts have the characteristics of smooth surface and no protrusions. When high-precision processing is required on their circumferential surface, how to position and clamp them becomes a problem that needs to be solved.
[0003] for example Figure 1 and Figure 2 As shown, a cylindrical part includes a steel cylindrical body 2, a circular countersunk hole 5 is provided on the first end face of the two ends of the cylindrical body 2, an axial first center blind hole 4 is provided at the center position of the bottom of the circular countersunk hole 5, an axial first side blind hole 6 is provided at the bottom of the circular countersunk hole 5 near the edge, a radial through hole 3 is provided on the circumferential hole wall of the circular countersunk hole 5, an axial second side blind hole 7 with a larger aperture is provided near the edge on the second end face of the two ends of the cylindrical body 2, an axial third side blind hole 8 with a smaller aperture is provided next to the second side blind hole 7, a radial peripheral blind hole 1 is provided on the circumferential outer wall of the cylindrical body 2 near the second end, a radial second center blind hole 9 is provided at the center position of the bottom of the peripheral blind hole 1, and the aperture of the second center blind hole 9 is very small and is connected to the first center blind hole 4 with a smaller diameter.
[0004] Among the multiple holes of the above-mentioned cylindrical part, the peripheral blind hole 1 needs to ensure that the surface roughness of its hole wall is 0.8, and the aperture of the second center blind hole 9 is very small and needs to be aligned and connected with the first center blind hole 4, so the peripheral blind hole 1 requires very high processing accuracy. It is difficult for traditional clamping tooling to accurately position and clamp it, resulting in low processing accuracy, low processing efficiency, and low part qualification rate. Utility Model Content
[0005] The utility model aims to solve the above problems and provide a positioning and clamping tool for machining high-precision holes on the circumference of cylindrical parts with high positioning accuracy, high machining efficiency and high parts qualification rate.
[0006] The utility model achieves the above-mentioned purpose through the following technical solutions:
[0007] A positioning and clamping tool for machining high-precision holes on the circumference of a cylindrical part, comprising a base, a positioning pin, a positioning seat and a pressure plate, wherein an "L"-shaped mounting groove is provided on the top of the base, a circular groove is provided on the vertical groove wall surface of the "L"-shaped mounting groove, a positioning blind hole with an axial direction being transverse is provided at a position near the edge of the groove bottom of the circular groove, the axial length of the transverse positioning pin is greater than the axial length of the positioning blind hole, one end of the positioning pin is placed in the positioning blind hole, an arc-shaped groove is provided on the transverse groove bottom surface of the "L"-shaped mounting groove, one end of the arc-shaped groove is connected to the lower part of the circular groove, the length direction between the two ends of the arc-shaped groove is perpendicular to the groove bottom of the circular groove, and the transverse groove bottom surface of the "L"-shaped mounting groove is provided. Vertical base screw holes are respectively provided at positions outside both sides of the arc-shaped groove, the lower end surface of the positioning seat is a horizontal plane and is located on the bottom surface of the horizontal groove of the "L"-shaped mounting groove, a positioning groove is provided on one side surface of the vertical groove wall of the positioning seat close to the "L"-shaped mounting groove, the pressure plate is placed in the positioning groove and is located above the arc-shaped groove, vertical positioning seat through holes are respectively provided at positions outside both sides of the positioning groove on the positioning seat, two vertical screws respectively pass through the two positioning seat through holes and are connected to the two base screw holes, a horizontal positioning seat screw hole is provided at a position on the positioning seat corresponding to the positioning groove and the positioning seat screw hole is connected to the positioning groove, and the horizontal screw is installed in the positioning seat screw hole and supports the pressure plate.
[0008] Preferably, in order to facilitate operation, the upper groove wall of the circular groove is open, and the pressure plate is a cylindrical pressure plate with its axial direction being horizontal.
[0009] Preferably, in order to facilitate installation of the tool on a machine tool, a downwardly protruding clamping cylinder is provided at the lower portion of the base.
[0010] The beneficial effects of the utility model are:
[0011] The utility model is designed with a base, a locating pin, a locating seat and a pressing plate that cooperate with each other. When in use, the lower side of the part body of the cylindrical part is placed in the arc-shaped groove, one end of the part body of the cylindrical part is placed in the circular groove, and the two ends of the locating pin are respectively placed in the locating blind hole of the tooling and the second side blind hole of the cylindrical part, so that the radial and circumferential precise positioning of the cylindrical part is achieved, and then the pressing plate is placed on the outer side of the other end of the part body of the cylindrical part, and the locating seat is installed, and then the transverse screw is installed to press against the pressing plate, so that the axial positioning of the cylindrical part can be achieved, and finally the cylindrical part can be positioned and clamped in all directions with high precision in radial, axial and circumferential directions, which is conducive to the high precision machining of the peripheral blind holes of the cylindrical parts, and improves the positioning precision, machining precision, machining efficiency and part qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is one of the three-dimensional images of a cylindrical part;
[0013] Figure 2 This is a three-dimensional diagram of a cylindrical part. Figure 1 The perspective is different;
[0014] Figure 3 It is a stereoscopic view of the positioning and clamping tooling for machining high-precision holes on the circumference of cylindrical parts before assembly;
[0015] Figure 4 It is a stereoscopic diagram of the positioning and clamping tooling for machining high-precision holes on the circumference of cylindrical parts after assembly according to the utility model;
[0016] Figure 5 It is a stereoscopic diagram of the positioning and clamping tooling used for machining high-precision holes on the circumference of cylindrical parts before assembly when the utility model is used;
[0017] Figure 6 It is a three-dimensional diagram of the positioning and clamping tooling for machining high-precision holes on the circumference of cylindrical parts after being assembled when applied. DETAILED DESCRIPTION
[0018] The utility model is further described below in conjunction with the accompanying drawings:
[0019] like Figure 3-Figure 6As shown, the positioning and clamping tooling for machining high-precision holes on the circumference of cylindrical parts described in the utility model comprises a base 10, a positioning pin 14, a positioning seat 19 and a pressing plate 18. An "L"-shaped mounting groove 11 is provided on the top of the base 10, and a circular groove 12 is provided on the vertical groove wall surface of the "L"-shaped mounting groove 11. A positioning blind hole 13 with an axial direction that is transverse is provided at the groove bottom near the edge of the circular groove 12. The axial length of the transverse positioning pin 14 is greater than the axial length of the positioning blind hole 13. One end of the positioning pin 14 is placed in the positioning blind hole 13. An arc groove 16 is provided on the transverse groove bottom surface of the "L"-shaped mounting groove 11. One end of the arc groove 16 is connected to the lower part of the circular groove 12. The length direction between the two ends of the arc groove 16 is perpendicular to the groove bottom of the circular groove 12. The transverse groove bottom of the "L"-shaped mounting groove 11 Vertical base screw holes 15 are respectively provided on the surface at positions outside both sides of the arc-shaped groove 16, the lower end surface of the positioning seat 19 is a horizontal plane and is located on the horizontal groove bottom surface of the "L"-shaped mounting groove 11, and a positioning groove 20 is provided on the side surface of the vertical groove wall of the positioning seat 19 close to the "L"-shaped mounting groove 11. The pressure plate 18 is placed in the positioning groove 20 and is located above the arc-shaped groove 16. Vertical positioning seat through holes 21 are respectively provided on the positioning seat 19 at positions outside both sides of the positioning groove 20, and two vertical screws 23 pass through the two positioning seat through holes 21 respectively and are connected to the two base screw holes 15. A horizontal positioning seat screw hole 22 is provided at a position on the positioning seat 19 corresponding to the positioning groove 20, and the positioning seat screw hole 22 is connected to the positioning groove 20, and a horizontal screw 24 is installed in the positioning seat screw hole 22 and supports the pressure plate 18.
[0020] Preferably, for ease of operation, the upper groove wall of the circular groove 12 is open, the pressure plate 18 is a cylindrical pressure plate and its axial direction is horizontal; in order to facilitate the installation of the tool on the machine tool, a downwardly protruding clamping cylinder 17 is provided at the bottom of the base 10.
[0021] like Figure 1-Figure 6 As shown, when used, the lower side of the part body 2 of the cylindrical part is placed in the arc-shaped groove 16, one end of the part body 2 of the cylindrical part is placed in the circular groove 12, and the two ends of the locating pin 14 are respectively placed in the positioning blind hole 13 of the tooling and the second side blind hole 7 of the cylindrical part, so that the radial and circumferential precise positioning of the cylindrical part is achieved, and then the pressure plate 18 is placed on the outside of the other end of the part body 2 of the cylindrical part, and the positioning seat 19 is installed, and then the transverse screw 24 is installed and pressed against the pressure plate 18, one end of the pressure plate 18 is located in the circular countersunk hole 5 of the part body 2 and pressed against the bottom of the circular countersunk hole 5, so that the axial positioning of the cylindrical part can be achieved, and finally the cylindrical part can be positioned and clamped in all directions with high precision in radial, axial and circumferential directions, and then the processing of the peripheral blind hole 1 and the second center blind hole 9 can be started.
[0022] illustrate: Figure 5 and Figure 6The cylindrical parts shown in the figure should be unprocessed parts, but in order to facilitate better understanding, the figures use processed cylindrical parts, which does not affect the description of the working principle of the utility model.
[0023] 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 positioning and clamping tool for machining high-precision holes on the circumference of cylindrical parts, comprising a base, characterized in that: It also includes a positioning pin, a positioning seat and a pressure plate, wherein an "L"-shaped mounting groove is provided on the top of the base, a circular groove is provided on the vertical groove wall surface of the "L"-shaped mounting groove, a positioning blind hole with an axial direction being transverse is provided at a position near the edge of the groove bottom of the circular groove, the axial length of the transverse positioning pin is greater than the axial length of the positioning blind hole, one end of the positioning pin is placed in the positioning blind hole, an arc-shaped groove is provided on the transverse groove bottom surface of the "L"-shaped mounting groove, one end of the arc-shaped groove is connected to the lower part of the circular groove, the length direction between the two ends of the arc-shaped groove is perpendicular to the groove bottom of the circular groove, and a position outside the two sides of the arc-shaped groove on the transverse groove bottom surface of the "L"-shaped mounting groove Vertical base screw holes are respectively provided, the lower end surface of the positioning seat is a horizontal plane and is located on the bottom surface of the horizontal groove of the "L"-shaped mounting groove, a positioning groove is provided on one side surface of the positioning seat close to the vertical groove wall of the "L"-shaped mounting groove, the pressure plate is placed in the positioning groove and is located above the arc-shaped groove, vertical positioning seat through holes are respectively provided on the positioning seat at positions outside the two sides of the positioning groove, two vertical screws respectively pass through the two positioning seat through holes and are connected with the two base screw holes, a horizontal positioning seat screw hole is provided at a position on the positioning seat corresponding to the positioning groove and the positioning seat screw hole is connected with the positioning groove, and the horizontal screw is installed in the positioning seat screw hole and supports the pressure plate.
2. The positioning and clamping tool for machining high-precision holes on the circumference of cylindrical parts according to claim 1 is characterized in that: The upper groove wall of the circular groove is open, and the pressing plate is a cylindrical pressing plate with its axial direction being horizontal.
3. The positioning and clamping tool for machining high-precision holes on the circumference of cylindrical parts according to claim 1 or 2, characterized in that: A clamping cylinder protruding downwards is provided at the lower part of the base.