Chuck positioning and clamping device for belt pulley machining
By designing a chuck positioning and clamping device for pulley machining, and adopting a combination of clamping and positioning components, the problem of ordinary chucks being unable to effectively clamp and axially position is solved, thus achieving stable clamping and high-precision machining of pulleys.
Patent Information
- Application Number
- CN202520563550.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-28
AI Technical Summary
In existing technologies, ordinary three-jaw chucks cannot effectively clamp and axially position pulleys, resulting in insufficient machining accuracy and stability.
Design a chuck positioning and clamping device, which uses a clamping component to radially support and position the pulley from the inside out, and a positioning component for axial positioning. It includes a clamping module and a positioning module distributed in a triangle, which are used for radial and axial positioning, respectively.
It improves the clamping stability and machining accuracy of pulleys, avoids radial displacement and end face tilting of the workpiece during the machining process, and improves the machining quality.
Smart Images
Figure CN223848986U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to processing chuck technical field, specifically is a kind of chuck positioning clamping device for pulley processing. BACKGROUND
[0002] Pulley structure is more special, it is not regular structure, and annular inner cavity is arranged on the end face of one side. When grinding, the surface to be processed is more, not only the outer circumferential surface of pulley needs to be processed, the inner ring surface of the end portion of annular inner cavity close to the center shaft of pulley and the outer ring surface of the end portion of annular inner cavity away from the center shaft of pulley all need to be ground, if using ordinary three-jaw chuck, only workpiece can be clamped from outside to inside, so it is not convenient to process the outer circumferential surface of pulley, and lack axial positioning, affect processing accuracy. SUMMARY
[0003] In view of the defects of prior art, the utility model provides a kind of chuck positioning clamping device for pulley processing, sets up clamping component from inside to outside radial support and position pulley, while setting positioning component carries out axial positioning, it not only can improve clamping stability, also can improve processing accuracy to a certain extent.
[0004] In order to achieve the above purpose, the technical scheme provided by the utility model is a kind of chuck positioning clamping device for pulley processing, for processing pulley, the end face of one side of the pulley is provided with annular inner cavity, it includes chuck body, clamping component and positioning component;Clamping component includes three clamping modules that are triangularly distributed and can be detachably installed on the chuck body, the clamping module includes protruding part, the protruding part extends into the annular inner cavity, and the protruding part is pressed against the surface on the outer diameter side of the annular inner cavity from inside to outside along the radial direction of the pulley;Positioning component includes three positioning modules that are triangularly distributed and can be detachably installed on the chuck body, the positioning module includes positioning surface, and the positioning surface is used to abut against the end face provided with the annular inner cavity.
[0005] Further, the positioning surface abuts against the end face on the side of the annular inner cavity away from the center shaft of the pulley.
[0006] Further, the side of the protruding part away from the center shaft of the pulley is provided with a profiled surface, and the profiled surface cooperates with the surface on the outer diameter side of the annular inner cavity.
[0007] Further, the included angle between the two adjacent clamping modules is 120 °.
[0008] Further, one positioning module is arranged between the two adjacent clamping modules.
[0009] Further, the included angle between two adjacent positioning modules is 120°.
[0010] Further, the transverse section of the convex part perpendicular to the center axis of the belt pulley is a fan ring.
[0011] Further, the positioning surface is a fan ring surface.
[0012] Further, the positioning surface is a plane.
[0013] Further, the positioning surface is a stepped surface, which cooperates with the end surface.
[0014] The beneficial effects of the utility model are as follows: the clamping assembly is arranged to position the belt pulley in the radial direction, so that unnecessary radial displacement of the workpiece during machining is avoided, and effective fixation is achieved; in addition, the positioning assembly is arranged to position the axial position, so that unnecessary inclination of the machined end surface is avoided; the special structure of the belt pulley is set in correspondence, so that the clamping stability is improved, and the machining precision is improved to a certain extent. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 Fig. 1 is a structural schematic view of a chuck positioning and clamping device for belt pulley machining according to an embodiment of the utility model;
[0016] Figure 2 Fig. 2 is a partial enlarged view of Fig. 1; Figure 1
[0017] Figure 3 Fig. 3 is a side view of the chuck positioning and clamping device for belt pulley machining according to an embodiment of the utility model;
[0018] Figure 4 Fig. 4 is a structural schematic view of a belt pulley according to an embodiment of the utility model;
[0019] In the drawings:
[0020] 100, chuck body,
[0021] 200, clamping module, 210, convex part, 211, profiling surface,
[0022] 300, positioning module, 310, positioning surface,
[0023] 10, belt pulley, 11, annular inner cavity, 12, belt pulley center axis, 13, end outer ring surface, 14, end inner ring surface,
[0024] 20, tool. DETAILED DESCRIPTION
[0025] For the above purposes, features and advantages of the present application to be more apparent and understandable, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a number of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific details set forth herein without departing from the scope of the present application, and it can be apparent to one skilled in the art that similar improvements can be made without departing from the spirit of the present application, and therefore the present application is not limited to the specific embodiments disclosed below.
[0026] Referring to Figures 1-3 , a structure schematic view of a chuck positioning and clamping device for pulley machining is shown, which is used for machining a pulley 10, the pulley 10 has a ring-shaped inner cavity 11 on one side end face, which comprises a chuck body 100, a clamping assembly and a positioning assembly; the clamping assembly and the positioning assembly are installed on the chuck body 100, the clamping assembly is used for supporting and fixing the radial position of the pulley 10; the positioning assembly is used for positioning the axial position of the pulley 10 by taking the end face of one side of the pulley 10 as a reference.
[0027] Referring to Figure 2 and Figure 3 , the clamping assembly comprises three clamping modules 200 which are triangularly distributed and detachably installed on the chuck body 100, the clamping module 200 comprises a convex part 210, the convex part 210 extends into the ring-shaped inner cavity 11, the convex part 210 is pressed against the surface on the outer diameter side of the ring-shaped inner cavity 11 along the radial direction of the pulley 10 from inside to outside, i.e. from the center shaft 12 of the pulley 10 outwardly; the positioning assembly comprises three positioning modules 300 which are triangularly distributed and detachably installed on the chuck body 100, the positioning module 300 comprises a positioning surface 310, the positioning surface 310 is used for abutting against the end face provided with the ring-shaped inner cavity 11.
[0028] Referring to Figure 2 and Figure 4, the pulley structure is more special, which is provided with an annular inner cavity 11, and the outer circumferential surface of the pulley, the inner ring surface 14 of the end of the annular inner cavity 11 close to the center shaft 12 of the pulley and the outer ring surface 13 of the end of the annular inner cavity 11 away from the center shaft 12 of the pulley all need to be ground. If a common three-jaw chuck is used, only the workpiece can be clamped from the outside to the inside, which is not convenient for machining the outer circumferential surface of the pulley. In the embodiment, three clamping modules 200 distributed in a triangular shape are arranged, the convex part 210 of the clamping module 200 extends into the annular inner cavity 11, and the convex part 210 presses the surface on the outer diameter side of the annular inner cavity 11 from the inside to the outside along the radial direction of the pulley 10, which can effectively avoid the fine machining of the outer circumferential surface of the pulley. On the other hand, the positioning module 300 is arranged, the positioning surface 310 of the positioning module 300 is used to abut against the end face provided with the annular inner cavity 11, which can position the axial position of the machined workpiece, avoid unnecessary inclination of the machined end face due to inaccurate positioning when the tool head extends into and cuts the other side end face, and further affect the unqualified rate. For example, as shown in Figure 2 , the positioning surface 310 abuts against the outer ring surface 13 of the end of the annular inner cavity 11 away from the center shaft 12 of the pulley to position the axial position, which can avoid inaccurate machining of the end inner ring surface 14 when the tool 20 cuts the end inner ring surface 14, and ensure the flatness of the machining of the end inner ring surface 14.
[0029] The chuck positioning and clamping device for pulley machining positions the pulley to be machined from the radial direction by arranging the clamping assembly, avoids unnecessary radial displacement of the workpiece during machining, effectively fixes the workpiece, and positions the axial position by arranging the positioning assembly, avoids unnecessary inclination of the machined end face, and is suitable for the special structure of the pulley. The clamping stability is improved, and the machining precision is improved to a certain extent.
[0030] Referring to Figure 2 , in an embodiment, the positioning surface 310 abuts against the end face on the side away from the center shaft 12 of the pulley.
[0031] It should be noted that in the embodiment, the positioning surface 310 abuts against the outer ring surface 13 of the end of the annular inner cavity 11 away from the center shaft 12 of the pulley to position the axial position. In addition to Figure 2In addition to the positioning method shown, the positioning surface 310 can also abut against the inner annular surface 14 of the annular cavity 11 on the side near the central shaft 12 of the pulley to position the axial position, while the tool 20 performs cutting on the outer annular surface 13 on the side away from the central shaft 12 of the pulley. Furthermore, the fixing methods between the clamping module 200 and the chuck body 100, and between the positioning module 300 and the chuck body 100, include but are not limited to bolt connections, and the radial installation position can be selected according to the diameter of the pulley 10.
[0032] like Figure 2 As shown, to make the pulley 10 clamping more stably, in one embodiment, the protrusion 210 has a contoured surface 211 on the side away from the pulley's central axis 12. The contoured surface 211 mates with the surface on the outer diameter side of the annular concave cavity 11. During processing, three clamping modules 200 support the pulley 10 from three positions from the inside out. In this embodiment, the contoured surface 211 is completely in contact with the surface of the workpiece, making the fit tighter.
[0033] See Figure 3 In one embodiment, the included angle between two adjacent clamping modules 200 is 120°. With this arrangement, the clamping force is more uniform, and the positioning of the pulley 10 is more stable.
[0034] See also Figure 3 In one embodiment, a positioning module 300 is provided between two adjacent clamping modules 200. Based on the above embodiment, the included angle between two adjacent positioning modules 300 is 120°. The three positioning modules 300 are evenly distributed on the chuck body 100, thereby providing three-point support and axial positioning from one end face of the pulley 10, resulting in relatively accurate positioning.
[0035] like Figure 3 As shown, in one embodiment, the transverse section of the protrusion 210 perpendicular to the central axis 12 of the pulley is a fan ring. The protrusion 210 can abut against the side wall of the annular concave cavity 11 on the pulley 10, and the two can fit well together, making the pulley 10 clamped more stably.
[0036] In one embodiment, the positioning surface 310 is a fan-ring surface.
[0037] In one embodiment, the positioning surface 310 is a plane. In another embodiment, the positioning surface 310 is a stepped surface, which mates with the end face. It should be noted that the positioning surface 310 is set as a plane or a stepped surface depending on whether the end face that mates with the positioning surface 310 is a plane. The two cooperate with each other to achieve a stable axial positioning and support effect.
[0038] In the description of the utility model, need understanding is, the term "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and so on indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawing, just for the convenience of describing the utility model and simplifying the description, and not indicate or imply the device or element indicated must have a particular orientation, with a particular orientation configuration and operation, therefore can not be understood as the restriction of the utility model.
[0039] In addition, the terms "first", "second" are only for the purpose of description, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one feature. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.
[0040] In the utility model, unless otherwise specifically defined and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0041] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature. It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only embodiment.
Claims
1. A chuck positioning and clamping device for machining pulleys, wherein one end face of the pulley has an annular concave cavity, characterized in that: The chuck body comprises: a clamping assembly comprising three clamping modules arranged in a triangular manner and detachably mounted on the chuck body, each clamping module comprising a convex portion extending into the annular inner recess, the convex portion abutting against a surface on one side of the outer diameter of the annular inner recess along the radial direction of the pulley; a positioning assembly comprising three positioning modules arranged in a triangular manner and detachably mounted on the chuck body, each positioning module comprising a positioning surface configured to abut against an end face having the annular inner recess. The positioning surface abuts against the end face on a side of the annular inner recess away from the central axis of the pulley.
2. A chuck positioning and clamping device for pulley machining as claimed in claim 1, characterized in that: The convex portion is provided with a profiled surface on a side away from the central axis of the pulley, the profiled surface being configured to cooperate with the surface on one side of the outer diameter of the annular inner recess.
3. A chuck positioning and clamping device for pulley machining as claimed in claim 1, characterized in that: The included angle between two adjacent clamping modules is 120°.
4. A chuck positioning and clamping device for pulley machining according to any one of claims 1-3, characterized in that: One positioning module is arranged between two adjacent clamping modules.
5. A chuck positioning and clamping device for pulley machining according to any one of claims 1-3, characterized in that: The included angle between two adjacent positioning modules is 120°.
6. A chuck positioning and clamping device for pulley machining according to any one of claims 1-3, characterized in that: The transverse cross section of the convex portion perpendicular to the central axis of the pulley is a fan ring.
7. A chuck positioning and clamping device for pulley machining according to any one of claims 1-3, characterized in that: The positioning surface is a fan ring surface.
8. A chuck positioning and clamping device for pulley machining according to any one of claims 1-3, characterized in that: The positioning surface is a plane.
9. A chuck positioning and clamping device for pulley machining according to any one of claims 1-3, characterized in that: The positioning surface is a stepped surface configured to cooperate with the end face.
10. A chuck positioning and clamping device for pulley machining according to any one of claims 1-3, characterized in that: