Positioning block structure with guide function

Abstract

The utility model belongs to the technical field of machining, and particularly relates to a positioning block structure with a guiding function. Comprising a circular-truncated-cone-shaped base body, a hanging table is arranged on the outer circle of the base body, the upper end face of the hanging table is a reference plane for positioning a part, and the lower end face is a limiting face of a floating taper sleeve; a floating taper sleeve is arranged on the periphery of the base body, the floating taper sleeve is provided with a hollow cylinder and a conical inclined face structure, the conical inclined face serves as an acting face of a guide part, dozens of cylindrical cavities are formed in the floating taper sleeve and used for assembling springs, the floating taper sleeve floats up and down through the springs with the base body as a shaft, and the function of automatically aligning the center of the part is achieved when the part is positioned. A bottom plate is arranged below the base body, an annular groove is formed in the bottom plate and used for limiting the spring, and the bottom plate and the base body are connected and fixed through bolts; the positioning block adopts a follow-up mode, so that the clutch hub blank part is ensured to be positioned accurately when being clamped, and the part and the positioning block are coaxial.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing, and particularly relates to a positioning block structure with a guiding function. Background Art

[0002] The spline cold forming machine features automatic part clamping. The operator places the part on the loading platform and presses the start button, which then slides the part into the work area. A mechanical gripper automatically grabs the part and holds it in place. The lifting mechanism and positioning blocks extend in tandem, clamping the part in place. Now that the part is coaxial with the positioning blocks, the mandrel pushes out, compressing the part. The positioning blocks then retract, and the part begins processing, beginning with the spinning of the spline.

[0003] The locating block is a key mechanism for positioning parts in the spline forming process. The existing locating block structure is usually a truncated cone-shaped solid, with the outer circle as the central axis, locating the piston cavity or center hole of the part. When locating parts, the existing locating block uses an inscribed cylinder as the positioning center. For parts with a piston cavity, the piston cavity serves as the axial reference when spinning on the spline cold forming equipment. Therefore, the diameter and cylindricity of the piston cavity are extremely demanding: if there is no gap between the locating block and the piston cavity during positioning, the locating block will drive the part out of the material after processing, and the mechanical gripper will be unable to automatically grasp the part, causing the equipment to alarm. If there is a large gap between the locating block and the piston cavity during positioning, the rolled spline will cause large vibration, affecting the size and performance of the clutch hub. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a positioning block structure with a guiding function, which has a compact structure, is convenient and flexible to use, can automatically align the center of the parts when positioning the parts, and can effectively prevent the parts from swinging under force when forming splines.

[0005] The technical solutions adopted by the present invention to solve the above technical problems are:

[0006] A positioning block structure with a guiding function mainly comprises: a truncated cone-shaped base 1, a floating cone sleeve 2 and a bottom plate 4. The floating cone sleeve 2 is sleeved on the outer ring of the base 1, and the bottom plate 4 is fixedly connected to the bottom of the base 1. A plurality of springs 3 are evenly arranged along the circumferential direction between the floating cone sleeve 2 and the bottom plate 4.

[0007] The outer ring of the base 1 is provided with a hanging platform 6, and the top of the floating cone sleeve 2 is provided with a hollow cylindrical straight section 9. The bottom of the hollow cylindrical straight section 9 is connected to a conical inclined surface section 10. The inner diameter of the hollow cylindrical straight section 9 is adapted to the outer diameter of the hanging platform 6, and the outer diameter of the hollow cylindrical straight section 9 is adapted to the size of the piston cavity of the part to be positioned.

[0008] Furthermore, a plurality of cylindrical cavities 8 are evenly arranged on the lower end surface of the floating cone sleeve 2 along the circumferential direction, and an annular groove 11 is arranged on the upper end surface of the bottom plate 4 along the circumferential direction, and the position of the annular groove 11 corresponds to the cylindrical cavities 8 .

[0009] Furthermore, a spring 3 is provided between each cylindrical cavity 8 and the annular groove 11 .

[0010] Furthermore, two ventilation holes 7 are symmetrically provided in the middle of the base body 1 along the axial direction.

[0011] Furthermore, the bottom of the base 1 is inserted into the cylindrical groove formed on the upper end surface of the bottom plate 4 , and a plurality of bolt holes 12 are correspondingly formed on the base 1 and the bottom of the cylindrical groove.

[0012] Furthermore, the base 1 and the bottom plate 4 are fixedly connected by a plurality of connecting bolts 5 .

[0013] Furthermore, the upper end surface of the hanging platform 6 is a reference plane for positioning parts, and the lower end surface is against the inner circular table surface of the floating cone sleeve 2.

[0014] Furthermore, one end of the spring 3 is fixedly installed in the corresponding cylindrical cavity 8 , and the other end is fixedly installed in the annular groove 11 .

[0015] Compared with the prior art, the present invention has the following main advantages:

[0016] 1. The utility model provides a positioning block structure with a guiding function. Through the reasonable arrangement of the base, floating cone sleeve, spring assembly, and bottom plate, the structure is compact and easy to use. When positioning parts, the conical inclined surface of the floating cone sleeve serves as the guiding surface of the parts. The floating cone sleeve as a whole uses the base as the axis and floats up and down through the spring to automatically find the center of the parts.

[0017] 2. The positioning block structure of the utility model adopts a follow-up method to ensure that the clutch hub blank is accurately positioned when clamped. The part is coaxial with the positioning block. When the part is forming the spline, the hollow cylinder and conical inclined surface structure opened at the top of the floating taper sleeve can closely cooperate with the piston cavity of the part to form a self-locking function, thereby effectively preventing the part from swinging under force and avoiding affecting the spline size of the part. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an overall schematic diagram of the positioning block structure in an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the assembly of the positioning block structure in the embodiment of the present utility model;

[0020] Figure 3This is a schematic structural diagram of the base body in an embodiment of the present utility model;

[0021] Figure 4 This is a bottom schematic diagram of the floating cone sleeve in the embodiment of the present utility model;

[0022] Figure 5 for Figure 4 Cross-sectional view in the AA direction

[0023] Figure 6 It is a structural schematic diagram of the bottom plate in an embodiment of the present utility model.

[0024] In the figure: 1-base, 2-floating cone sleeve, 3-spring, 4-base plate, 5-connecting bolt, 6-hanging platform, 7-vent, 8-cylindrical cavity, 9-hollow cylindrical straight section, 10-conical inclined section, 11-annular groove, 12-bolt hole. DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0028] In the description of this application, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the application is usually placed when in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as a limitation on this application.

[0029] The features and performance of the present application are further described in detail below with reference to the embodiments.

[0030] Embodiment 1: This embodiment provides a positioning block structure with a guiding function, such as Figures 1 to 6 As shown, it mainly includes: a truncated cone-shaped base 1, a floating cone sleeve 2 and a bottom plate 4;

[0031] The floating cone sleeve 2 is sleeved on the outer ring of the base 1, the bottom plate 4 is fixedly connected to the bottom of the base 1, and a plurality of springs 3 are evenly arranged along the circumferential direction between the floating cone sleeve 2 and the bottom plate 4;

[0032] The outer ring of the base 1 is provided with a hanging platform 6, and the top of the floating cone sleeve 2 is provided with a hollow cylindrical straight section 9. The bottom of the hollow cylindrical straight section 9 is connected to a conical inclined surface section 10. The inner diameter of the hollow cylindrical straight section 9 is adapted to the outer diameter of the hanging platform 6, and the outer diameter of the hollow cylindrical straight section 9 is adapted to the size of the piston cavity of the part to be positioned.

[0033] Furthermore, a plurality of cylindrical cavities 8 are evenly arranged on the lower end surface of the floating cone sleeve 2 along the circumferential direction, and an annular groove 11 is arranged on the upper end surface of the bottom plate 4 along the circumferential direction, and the position of the annular groove 11 corresponds to the cylindrical cavities 8 .

[0034] Furthermore, a spring 3 is provided between each cylindrical cavity 8 and the annular groove 11 .

[0035] Furthermore, two ventilation holes 7 are symmetrically provided in the middle of the base body 1 along the axial direction.

[0036] Furthermore, the bottom of the base 1 is inserted into the cylindrical groove formed on the upper end surface of the bottom plate 4 , and a plurality of bolt holes 12 are correspondingly formed on the base 1 and the bottom of the cylindrical groove.

[0037] Furthermore, the base 1 and the bottom plate 4 are fixedly connected by a plurality of connecting bolts 5 .

[0038] Furthermore, the upper end surface of the hanging platform 6 is a reference plane for positioning parts, and the lower end surface is against the inner circular table surface of the floating cone sleeve 2.

[0039] Furthermore, one end of the spring 3 is fixedly installed in the corresponding cylindrical cavity 8 , and the other end is fixedly installed in the annular groove 11 .

[0040] Embodiment 2: This embodiment provides a positioning block structure with a guiding function, such as Figures 1-2 As shown, it includes a truncated cone-shaped base, the outer circle of the base is provided with a hanging platform, the upper end surface of the hanging platform is the reference plane for positioning parts, and the lower end surface is the limiting surface of the floating cone sleeve.

[0041] Furthermore, a floating cone sleeve is provided on the periphery of the base, and the floating cone sleeve has a hollow cylinder + conical slope structure. The conical slope serves as the working surface of the guiding part. There are dozens of cylindrical cavities in the floating cone sleeve for assembling springs. The floating cone sleeve uses the base as the axis and floats up and down through the spring. When positioning the parts, it plays the role of automatically aligning the center of the parts.

[0042] Furthermore, the hollow cylindrical structure cooperates with the piston cavity of the positioning part to form a self-locking when the part is spun on the spline.

[0043] Furthermore, the lower end surface of the floating cone sleeve is provided with more than ten cylindrical cavities for guiding and positioning the spring, with the base as the central axis, to achieve the floating self-alignment function. When the floating cone sleeve is in the free state, the spring is in the pre-compressed state.

[0044] Furthermore, a base plate is provided under the base body, and the base plate is provided with an annular groove for spring limiting, and the base plate and the base body are fixed by bolts; the positioning block adopts a follow-up method to ensure that the clutch hub blank part is accurately positioned when clamped, and the part is coaxial with the positioning block.

[0045] like Figure 3 As shown, in this embodiment, the base body 1 is provided with two symmetrically located vent holes 7 to prevent the formation of closed cavities during part processing, which could prevent air from being exhausted. The base body 1 is provided with a hanging platform 6, the upper end surface of which serves as a reference plane for positioning the part; the lower end surface serves as an axial limit surface for the floating cone sleeve 2.

[0046] like Figure 4 As shown, in this embodiment, the floating taper sleeve 2 features a hollow cylindrical straight section 9 and a tapered slope 10, which mate with the piston cavity of the positioning component. This design adaptively aligns the component center during positioning and, during spline formation, provides a self-locking mechanism to prevent the component from swinging under load. The floating taper sleeve 2 is equipped with dozens of cylindrical cavities 8, which position and guide the springs 3 and prevent them from intertwining.

[0047] like Figure 5 As shown, in this embodiment, an annular groove 11 is provided on the upper end surface of the bottom plate for supporting and limiting the spring 3; the lower end surface is connected and fixed to the base 1 by bolts to form a whole.

[0048] The specific principles are:

[0049] 1) When the locating block contacts the part, the inclined surface of the floating taper sleeve first contacts the arc of the part's piston cavity. As clamping force is further applied, the floating taper sleeve is pressed downward by the spring until the end surface of the mounting table presses against the part's locating plane. At this point, the taper sleeve and the part's piston cavity are engaged and compressed. This follow-up mechanism ensures that the part remains coaxial with the locating block during compression, facilitating alignment and preventing runout of the formed spline due to misaligned assembly and positioning.

[0050] 2) When forming the spline, the part is subjected to significant rolling forces in the diametrical direction. A hollow cylindrical structure is located at the top of the inclined surface of the floating taper sleeve, which, together with the inclined surface, aligns with the piston cavity of the part. The hollow cylindrical straight section and tapered inclined surface of the taper sleeve provide a tight fit with the part, creating a self-locking effect and preventing the part from swinging under force during spline forming, which could affect the spline dimensions.

[0051] Furthermore, all parts of this application that are not described in detail are the same as the existing technology or are implemented using the existing technology.

[0052] The above embodiments are intended only to illustrate the design concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. The scope of protection of the present invention is not limited to the above embodiments. Therefore, any equivalent changes or modifications based on the principles and design concepts disclosed in the present invention are within the scope of protection of the present invention.

Claims

1. A positioning block structure with a guiding function, characterized in that: It comprises a truncated cone-shaped base (1), a floating cone sleeve (2) and a bottom plate (4), wherein the floating cone sleeve (2) is sleeved on the outer ring of the base (1), the bottom plate (4) is fixedly connected to the bottom of the base (1), and a plurality of springs (3) are evenly arranged along the circumferential direction between the floating cone sleeve (2) and the bottom plate (4); The outer ring of the base (1) is provided with a hanging platform (6), the top of the floating cone sleeve (2) is provided with a hollow cylindrical straight section (9), the bottom of the hollow cylindrical straight section (9) is connected with a conical inclined surface section (10), the inner diameter of the hollow cylindrical straight section (9) is adapted to the outer diameter of the hanging platform (6), and the outer diameter of the hollow cylindrical straight section (9) is adapted to the size of the piston cavity of the part to be positioned.

2. A positioning block structure with a guiding function according to claim 1, characterized in that: The lower end surface of the floating cone sleeve (2) is evenly provided with a plurality of cylindrical cavities (8) along the circumferential direction, and the upper end surface of the bottom plate (4) is provided with an annular groove (11) along the circumferential direction, and the position of the annular groove (11) corresponds to the cylindrical cavities (8).

3. The positioning block structure with a guiding function according to claim 2, characterized in that: A spring (3) is provided between each cylindrical cavity (8) and the annular groove (11).

4. The positioning block structure with a guiding function according to claim 1, characterized in that: Two vent holes (7) are symmetrically provided in the middle of the base body (1) along the axial direction.

5. The positioning block structure with a guiding function according to claim 1, characterized in that: The bottom of the base (1) is inserted into a cylindrical groove formed on the upper end surface of the bottom plate (4), and a plurality of groups of bolt holes (12) are correspondingly formed on the base (1) and the bottom of the cylindrical groove.

6. The positioning block structure with a guiding function according to claim 5, characterized in that: The base (1) and the bottom plate (4) are fixedly connected via a plurality of connecting bolts (5).

7. The positioning block structure with a guiding function according to claim 1, characterized in that: The upper end surface of the hanging platform (6) is a reference plane for positioning parts, and the lower end surface abuts against the inner circular table surface of the floating cone sleeve (2).

8. The positioning block structure with a guiding function according to claim 3, characterized in that: One end of the spring (3) is fixedly installed in the corresponding cylindrical cavity (8), and the other end is fixedly installed in the annular groove (11).

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