Spoke fixing clamp

Abstract

The utility model discloses a spoke fixing clamp which is used for fixing, supporting and limiting a spoke and comprises a supporting seat and a positioning disc fixedly installed on the supporting seat, the middle of the positioning disc protrudes upwards to form a cylindrical protrusion, and the cylindrical protrusion is used for fixing and limiting a center positioning hole of the spoke. A plurality of receding holes are formed in the positions, corresponding to the circumferential periphery of the circular protrusion, of the positioning disc, an elastic telescopic positioning pin is installed in at least one receding hole so as to move up and down, the top of the positioning pin protrudes out of the receding hole, and the positioning pin is used for fixing and limiting a bolt hole of the spoke. The spoke fixing clamp can stably support and limit a spoke through mutual matching of the cylindrical protrusions and the positioning pins, so that the spoke is prevented from deviating and rotating under the action of centripetal force generated by a plurality of cutters, and the quality problem of large and small edges of a spherical surface of a machined counter bore is solved. And the service life of the product is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of spoke processing, in particular to a spoke fixing fixture. Background Art

[0002] At present, when countersinking multiple bolt holes on the wheel spoke, the spoke is usually placed on the spoke fixing fixture first, and then the countersinking is performed simultaneously by multiple tools, such as Figure 1 The figure shows an existing spoke fixing fixture, which is unable to stably support and limit the spokes. As a result, when multiple tools are simultaneously performing countersinking processing, the spokes are prone to offset and rotation under the action of the centripetal force of multiple tools, which makes the processed countersinks prone to spherical large and small sides (i.e. one side is larger and the other side is smaller) quality problems, that is, the concentricity of the countersink and the bolt hole cannot be guaranteed, thereby reducing the service life of the product, increasing the three-guarantee cost of the product, and causing customers to lose confidence in the product. Utility Model Content

[0003] The utility model aims to provide a spoke fixing clamp to solve the above-mentioned technical problems.

[0004] To achieve the above-mentioned purpose, the technical solution of the utility model is: a spoke fixing clamp for fixing, supporting and limiting the spoke, comprising a support seat and a positioning plate fixedly installed on the support seat, the middle part of the positioning plate protruding upward to form a cylindrical protrusion, the cylindrical protrusion is used to fix and limit the central positioning hole of the spoke, and a plurality of clearance holes are respectively provided on the circumferential periphery of the corresponding circular protrusions on the positioning plate, at least one of which is equipped with an elastic and retractable positioning pin to achieve up and down movement, and the top of the positioning pin protrudes out of the clearance hole, and the positioning pin is used to fix and limit the bolt hole of the spoke.

[0005] Preferably, there are two symmetrically arranged positioning pins, and the two positioning pins are respectively installed in two mutually symmetrical paving holes on the positioning plate.

[0006] Preferably, it also includes a base, and the support seat is locked and installed above the middle part of the base.

[0007] Preferably, bolts are further included, and the positioning plate and the support seat are locked together by bolts, and the support seat and the base are locked together by bolts.

[0008] Preferably, a guide sleeve is installed between the positioning plate and the base, and the guide sleeve is coaxially arranged below the clearance hole. The positioning pin includes a pin head and a pin rod connected up and down. The bottom of the pin head is provided with a pin sleeve corresponding to the outer fixed sleeve of the pin rod. The positioning pin is arranged in the guide sleeve through the pin sleeve for upward and downward movement, and a spring is installed between the pin rod and the pin sleeve. The upper and lower ends of the spring respectively abut against the pin head and the base.

[0009] Preferably, the pin sleeve and the guide sleeve are transitionally fitted, and the gap range of the transitionally fitted is 0.05-0.1 mm.

[0010] Preferably, the guide sleeve and the base are interference fit.

[0011] Preferably, an electromagnet is provided on the positioning plate for magnetically fixing the spokes.

[0012] Preferably, it also includes a bearing, the clearance hole is divided into a first clearance hole and a second clearance hole, the positioning pin is installed in the first clearance hole, the bearing is installed in the second clearance hole, and the bearing is used to cooperate with the reaming tool to limit the position.

[0013] Preferably, it further comprises a pressure plate fixedly mounted on the bottom side of the positioning plate, and a support ring is mounted between the pressure plate and the bearing.

[0014] The utility model has the following beneficial effects:

[0015] The utility model includes a support seat and a positioning plate fixedly mounted on the support seat, wherein the middle portion of the positioning plate protrudes upward to form a cylindrical protrusion, which is used to fix and limit the central positioning hole of the spoke, and the positioning plate is provided with a plurality of clearance holes on the circumferential periphery corresponding to the circular protrusion, wherein at least one of the clearance holes is provided with an elastic and retractable positioning pin to achieve up and down movement, and the top of the positioning pin protrudes out of the clearance hole, and the positioning pin is used to fix and limit the bolt hole of the spoke. This arrangement enables the spoke fixing fixture to stably support and limit the spoke through the mutual cooperation between the cylindrical protrusion and the positioning pin, thereby preventing the spoke from being offset and rotated under the action of the centripetal force generated by multiple tools, so that the processed countersink will not produce the quality problem of the large and small sides of the spherical surface (one side is larger and the other side is smaller), that is, the concentricity of the countersink and the bolt hole can be guaranteed, thereby extending the service life of the product, reducing the three-guarantee cost of the product and improving customer trust in the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional view of a spoke fixing clamp in the prior art.

[0017] Figure 2 It is a three-dimensional diagram of an embodiment of the present utility model.

[0018] Figure 3 It is a top view of an embodiment of the present utility model.

[0019] Figure 4 It is a cross-sectional view of an embodiment of the present utility model.

[0020] Figure 5 It is a schematic structural diagram of the spokes of an embodiment of the present utility model.

[0021] Figure 6It is a cross-sectional view of a spoke according to an embodiment of the present invention.

[0022] Figure 7 It is a schematic diagram of an embodiment of the present invention during countersinking processing.

[0023] The accompanying drawings are marked: 1 base, 2 support seat, 3 positioning plate, 31 cylindrical protrusion, 4 clearance hole, 41 first clearance hole, 42 second clearance hole, 5 positioning pin, 51 pin head 52 pin rod, 6 pin sleeve, 7 guide sleeve, 8 spring, 9 bearing, 10 pressure plate 11 support ring, 12 bolt, 13 spoke, 131 center positioning hole, 132 bolt hole, 14 tool. DETAILED DESCRIPTION

[0024] To further illustrate various embodiments, the present invention is provided with accompanying drawings. These drawings form part of the disclosure of this invention and are primarily used to illustrate the embodiments and, in conjunction with the relevant description in the specification, to explain the operating principles of the embodiments. By referring to these drawings, those skilled in the art will understand other possible implementations and the advantages of this invention. The components in the figures are not drawn to scale, and similar reference numerals are generally used to represent similar components.

[0025] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0027] See Figure 2-7As shown, as an embodiment of the present invention, a spoke fixing fixture is provided for fixing, supporting and limiting the spoke 13, including a support seat 2 and a positioning plate 3 fixedly installed on the support seat 2, the middle part of the positioning plate 3 protrudes upward to form a cylindrical protrusion 31, the cylindrical protrusion 31 is used to fix and limit the central positioning hole 131 of the spoke 13, and a plurality of clearance holes 4 are respectively provided on the circumferential periphery of the corresponding circular protrusions on the positioning plate 3, at least one of which is equipped with an elastic and retractable positioning pin 5 to achieve up and down movement, and the top of the positioning pin 5 protrudes out of the clearance hole 4, and the positioning pin 5 is used to fix and limit the bolt hole 132 of the spoke 13. When the wheel spoke 13 of the present invention is countersunk, the center positioning hole 131 of the wheel spoke 13 is first fixed to the outside of the cylindrical protrusion 31, and the bolt hole 132 of the wheel spoke 13 is sleeved on the outside of the positioning pin 5, thereby fixing the wheel spoke 13 on the positioning plate 3 of the wheel spoke fixing fixture to form a stable support, and then the hole openings of the bolt hole 132 of the wheel spoke 13 are countersunk by multiple tools 14 at the same time. At this time, under the downward squeezing action of the tool 14, the positioning pin 5 elastically moves downward but still maintains the screw thread of the wheel spoke 13. The bolt hole 132 is fixed and limited. This setting enables the spoke fixing fixture to stably support and limit the spoke 13 through the mutual cooperation of the cylindrical protrusion 31 and the positioning pin 5, thereby preventing the spoke 13 from being offset and rotated under the action of the centripetal force generated by multiple tools 14, so that the processed countersink will not have the quality problem of the large and small sides of the spherical surface (one side is large and the other side is small), that is, the concentricity of the countersink and the bolt hole 132 can be guaranteed, thereby extending the service life of the product, reducing the three-guarantee cost of the product and enhancing customer trust in the product.

[0028] In this embodiment, the diameter of the central positioning hole 131 of the spoke 13 corresponds to the diameter of the cylindrical protrusion 31. The diameter of the positioning pin 5 corresponds to the diameter of the bolt hole 132 of the spoke 13. The positioning pin 5 and its corresponding bolt hole 132 of the spoke 13 are coaxially arranged to ensure positioning accuracy and stability. The clearance holes 4 are evenly distributed along the circumference of the positioning plate 3, corresponding one-to-one with the bolt holes 132 of the spoke 13.

[0029] In this embodiment, there are two symmetrically arranged positioning pins 5, and the two positioning pins 5 are respectively installed in two symmetrically arranged clearance holes 4 on the positioning plate 3, thereby further improving the limiting accuracy and support stability of the spoke 13, preventing the spoke 13 from rotating, and improving the processing accuracy of the countersinking.

[0030] In this embodiment, a base 1 is also included, and a support seat 2 is locked and installed above the middle part of the base 1. The base 1 is disc-shaped, and the diameter of the base 1 is larger than the diameter of the support seat 2, further ensuring the support stability of the spoke fixing fixture during processing.

[0031] In this embodiment, bolts 12 are further included. The positioning plate 3 and the support seat 2 are locked together by the bolts 12, and the support seat 2 and the base 1 are locked together by the bolts 12, thereby facilitating the assembly and disassembly and maintenance of each component.

[0032] In this embodiment, a bearing 9 is also included. The bearing 9 is interference fit with the positioning plate 3. The clearance hole 4 is divided into a first clearance hole 41 and a second clearance hole 42. The positioning pin 5 is installed in the first clearance hole 41, and the bearing 9 is installed in the second clearance hole 42. The bearing 9 is a deep groove bearing 9. The bearing 9 is used to limit the position with the reaming tool, so as to facilitate the reaming processing of the bolt hole 132 of the spoke 13 and ensure concentricity and processing accuracy.

[0033] In this embodiment, a pressure plate 10 is fixedly mounted on the bottom side of the positioning plate 3. A support ring 11 is installed between the pressure plate 10 and the bearing 9. The pressure plate 10, the support ring 11 and the bearing 9 are locked together to ensure the installation of the bearing 9 and the stability of the support.

[0034] In this embodiment, a guide sleeve 7 is installed between the positioning plate 3 and the base 1. The guide sleeve 7 is coaxially arranged below the first clearance hole 41. The positioning pin 5 includes a pin head 51 and a pin rod 52 connected upper and lower. The bottom of the pin head 51 corresponds to the outer fixed sleeve of the pin rod 52 and is provided with a pin sleeve 6. The positioning pin 5 is set in the guide sleeve 7 through the pin sleeve 6 to move up and down, and a spring 8 is installed between the pin rod 52 and the pin sleeve 6. The upper and lower ends of the spring 8 are respectively abutted against the pin head 51 and the base 1. This arrangement makes the upward and downward movement of the positioning pin 5 in the guide sleeve 7 smoother and more stable, avoiding tilting, offset or jamming.

[0035] In this embodiment, the pin sleeve 6 and the guide sleeve 7 are transitionally fitted. When the gap range of the transition fit is too small, the locating pin 5 is prone to getting stuck when moving up and down in the guide sleeve 7. When the gap range of the transition fit is too large, the locating pin 5 is prone to tilting and offsetting when moving up and down in the guide sleeve 7. After actual testing, the gap range of the transition fit is finally selected to be 0.05-0.1mm. This gap range further improves the smoothness and stability of the locating pin 5 moving up and down in the guide sleeve 7, which can avoid tilting and offsetting, as well as getting stuck, and enables the spoke fixing clamp of the present invention to maintain its original accuracy after repeated use.

[0036] In this embodiment, the guide sleeve 7 and the base 1 are interference fit to ensure the installation and connection stability of the guide sleeve 7.

[0037] In this embodiment, an electromagnet is provided on the positioning plate 3 for magnetically fixing the spokes 13 , thereby further improving the supporting stability of the spokes 13 on the positioning plate 3 .

[0038] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes in form and details made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims shall fall within the scope of protection of the present invention.

Claims

1. A spoke fixing fixture for fixing, supporting and limiting the spokes, characterized by: It includes a support base and a positioning plate fixedly installed on the support base. The middle part of the positioning plate protrudes upward to form a cylindrical protrusion. The cylindrical protrusion is used to fix and limit the central positioning hole of the spoke. A plurality of clearance holes are respectively provided on the circumferential periphery of the corresponding circular protrusions on the positioning plate. At least one of the clearance holes is installed with an elastic and retractable positioning pin to achieve up and down movement. The top of the positioning pin protrudes out of the clearance hole. The positioning pin is used to fix and limit the bolt hole of the spoke.

2. The spoke fixing fixture according to claim 1, characterized in that: There are two symmetrically arranged positioning pins, which are respectively installed in two mutually symmetrical locating holes on the positioning plate.

3. The spoke fixing fixture according to claim 1, characterized in that: It also includes a base, and the support seat is locked and installed above the middle part of the base.

4. The spoke fixing fixture according to claim 3, characterized in that: It also includes bolts, the positioning plate and the support seat are locked together by bolts, and the support seat and the base are locked together by bolts.

5. The spoke fixing fixture according to claim 3, characterized in that: A guide sleeve is installed between the positioning plate and the base. The guide sleeve is coaxially arranged below the clearance hole. The positioning pin includes a pin head and a pin rod connected up and down. The bottom of the pin head is provided with a pin sleeve corresponding to the outer fixed sleeve of the pin rod. The positioning pin is arranged in the guide sleeve through the pin sleeve for upward and downward movement, and a spring is installed between the pin rod and the pin sleeve. The upper and lower ends of the spring are respectively abutted against the pin head and the base.

6. The spoke fixing fixture according to claim 5, characterized in that: The pin sleeve and the guide sleeve are transitionally matched, and the clearance range of the transitional match is 0.05-0.1mm.

7. The spoke fixing fixture according to claim 5, characterized in that: The guide sleeve and the base are interference fit.

8. The spoke fixing fixture according to claim 1, characterized in that: An electromagnet is provided on the positioning plate for magnetically fixing the spokes.

9. The spoke fixing fixture according to claim 1, characterized in that: It also includes a bearing, the clearance hole is divided into a first clearance hole and a second clearance hole, the positioning pin is installed in the first clearance hole, the bearing is installed in the second clearance hole, and the bearing is used to cooperate with the reaming tool to limit the position.

10. The spoke fixing fixture according to claim 9, characterized in that: It also includes a pressing plate fixedly installed on the bottom side of the positioning plate, and a supporting ring is installed between the pressing plate and the bearing.

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