Rim drilling flange with adjustable outer diameter

Abstract

The utility model relates to the field of manufacturing of bicycles and motorcycles, in particular to the field of rim machining of bicycles and motorcycles, and particularly relates to a rim drilling flange with an adjustable outer diameter, which solves the technical problems that an aluminum flange needs to be replaced and is easy to wear when the outer diameters of rims are different, and is convenient to adjust and adapt to the rims with different outer diameters. The device comprises a central ring seat, a plurality of supporting arms which face outwards and incline upwards are evenly distributed on the outer circumference of the central ring seat, and a vertically-upward core rod is arranged at the central position of the central ring seat. The aluminum ring and the central ring seat are coaxially distributed, and the bottom of the aluminum ring is connected with the outer end of the supporting arm; the steel ring is fixed on the top surface of the aluminum ring; the bakelite ring is fixed on the top surface of the steel ring; and the clamping jaws are assembled on the outer side of the bakelite ring, and the positions of the clamping jaws can be adjusted in the radial direction of the bakelite ring.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of bicycle, motorcycle manufacturing, especially the field of rim machining of bicycle, motorcycle, concretely relates to a rim drilling flange with adjustable outer diameter. BACKGROUND

[0002] The most basic thing in Industry 4.0 and Industry 2025 is intelligent manufacturing, which is to adapt to personalized and small order production. The rim is an important part of the bicycle and motorcycle, and its quality directly affects the driving safety. In the manufacturing process of the rim, drilling is a key step, and a special drilling flange is needed to assist in positioning the rim to ensure the accuracy of the hole position. In addition, the material of the flange also affects the drilling effect and stability. Currently, aluminum flanges are widely used in rim manufacturing due to their lightweight, corrosion resistance and other advantages.

[0003] However, in the existing technology, different drilling flanges are usually needed for different outer diameters of the rim. This is because the positioning and clamping positions of rims with different outer diameters are different, and specially designed flanges are needed to ensure the accuracy of drilling. The drilling flange works in pairs, with the lower flange holding the rim and slotting downward, and the outer diameter of the slot is approximately the same as that of the rim, which constrains the aluminum ring and ensures its concentricity. The upper flange does not slot and presses the rim. Therefore, the problem in actual operation is that different drilling flanges are needed for rims with different outer diameters, which undoubtedly increases the production and management costs. Secondly, since the material of the flange is mainly aluminum, its hardness and wear resistance are relatively poor, which can easily wear out during drilling, affecting the positioning accuracy and thus the drilling accuracy. UTILITY MODEL CONTENTS

[0004] The utility model provides a rim drilling flange with adjustable outer diameter, which solves the technical problems of replacing aluminum flanges for different rim outer diameters and the easy wear of aluminum flanges, facilitates the adjustment of rims with different outer diameters, reduces the degree of wear, and improves the positioning accuracy.

[0005] The utility model is implemented through the following technical solutions:

[0006] A rim drilling flange with adjustable outer diameter, comprising

[0007] A center ring seat with multiple outwardly inclined support arms evenly distributed on the outer circumference, and a vertical upward core rod at the center position;

[0008] An aluminum ring coaxially distributed with the center ring seat, with the outer end of the support arm connected to the bottom;

[0009] A steel ring fixed to the top surface of the aluminum ring;

[0010] A bakelite ring fixed to the top surface of the steel ring;

[0011] A plurality of clamps are assembled on the outside of the bakelite ring and can be adjusted in position along the radial direction of the bakelite ring.

[0012] Further, the clamp comprises vertically distributed claw plates and horizontally distributed adjusting plates, the front end of the adjusting plate is fixedly connected to the bottom of the claw plate, and a long hole is arranged on the adjusting plate.

[0013] The bottom surface of the bakelite ring is processed with a sliding groove penetrating the width thereof, the adjusting plate of the clamp is inserted into the sliding groove, and the long hole of the clamp is fixed to the top surface of the steel ring through an adjusting bolt.

[0014] Further, the top surface of the center ring seat is fixed with a connecting piece, and the connecting piece is threadedly connected with the core rod.

[0015] Further, the top surface of the aluminum ring is provided with an annular open groove, and the steel ring is assembled on the open groove and fixed to the aluminum ring through a bolt assembly.

[0016] Further, the number of the support arms is 6-8, and the inclination angle of the support arms is 30°-45°.

[0017] Further, the clamp is made of aluminum material.

[0018] The beneficial effects achieved by the utility model compared with the prior art are as follows:

[0019] 1. By adjusting the clamp, the rims with different outer diameters can be fixed, the universal improvement based on the fixed flange is realized, the problem of frequently changing the mold due to different outer diameters of the rims is greatly reduced, and the production cost and management cost are reduced.

[0020] By fixing the steel ring on the aluminum ring, the reference surface of the aluminum ring is more stable, the overall strength is improved, and the flatness accuracy of the drilling is further improved.

[0021] The bakelite ring is in contact with the surface of the rim, which protects the surface of the rim and avoids damage to the surface of the rim during drilling.

[0022] 2. The bakelite ring and the steel ring are fixedly connected through bolts, the bakelite ring can be replaced at any time when it is worn out, the wear part can be replaced, the service life of the flange is improved, and the use cost of the flange is reduced.

[0023] 3. The clamp comprises vertically distributed claw plates and horizontally distributed adjusting plates, and the distance along the radial direction of the bakelite ring can be adjusted through cooperation with the sliding groove, and the operation and processing are convenient.

[0024] 4. The clamp is made of aluminum material, and due to the characteristics of aluminum material, the rim will not be damaged.

[0025] 5, the center axis of the center ring seat is installed with a core rod, and the caliper is positioned so that the concentricity of the flange is significantly improved, thereby improving the accuracy of the drilling. BRIEF DESCRIPTION OF DRAWINGS

[0026] Fig. 1 The utility model discloses an outer diameter adjustable wheel rim drilling flange and a center ring seat.

[0027] Fig. 2 The utility model discloses an outer diameter adjustable wheel rim drilling flange and a center ring seat.

[0028] In the figure: 1, center ring seat, 2, aluminum ring, 3, steel ring, 4, bakelite ring, 5, support arm, 6, claw, 7, adjusting bolt, 8, core rod. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0030] In the description of the utility model, it needs to be understood that the terms "front", "back", "up", "down", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the utility model.

[0031] In order to solve the problem that the existing technology needs to frequently replace the mold and the aluminum flange is easy to wear when fixing the aluminum flange to clamp different outer diameter rims, Figs. 1-2 As shown in the figure, the embodiment discloses an outer diameter adjustable wheel rim drilling flange, mainly including a center ring seat 1, an aluminum ring 2, a steel ring 3, a bakelite ring 4 and 12 clamps 6 and the like.

[0032] There are six outwardly inclined support arms 5 distributed on the outer circumference of the center ring seat 1, and the inclination angle of the support arm 5 is 30°, the aluminum ring 2 is coaxially distributed with the center ring seat 1, and the bottom is connected with the outer end of the support arm 5, thereby forming the main structure of the drilling flange.

[0033] In order to ensure the stability of the overall structure, an annular open groove is arranged on the top surface of the aluminum ring 2, the steel ring 3 is assembled on the open groove and fixed on the aluminum ring 2 through a bolt assembly. The bakelite ring 4 is fixed on the top surface of the steel ring 3 through a bolt assembly.

[0034] 12 claws 6 are evenly spaced on the outside of the bakelite ring 4, and can be adjusted in position along the radial direction of the bakelite ring 4. Each claw 6 is made of aluminum material, and the claw 6 includes a vertically distributed claw plate and a transversely distributed adjusting plate. The front end of the adjusting plate is fixedly connected to the bottom of the claw plate in an L shape, and a long hole is processed on the adjusting plate. A slide groove is processed on the bottom surface of the bakelite ring 4, which penetrates the width of the bakelite ring 4. The number of the slide groove is the same as that of the claw 6, and the adjusting plate of the claw 6 is inserted into the slide groove. When the claw 6 is adjusted in position, the long hole of the claw 6 is fixed to the top surface of the steel ring 3 through the adjusting bolt 7.

[0035] In order to facilitate positioning of the hub shaft and improve machining precision, a connecting piece is fixed to the top surface of the center ring seat 1 through a bolt assembly, and a core rod 8 is threadedly connected to the connecting piece.

[0036] The specific working process of the outer diameter adjustable rim drilling flange described in the embodiment is as follows:

[0037] The shaft hole of the rim to be machined is assembled on the core rod 8, and then the surface of the rim is brought into contact with the bakelite ring 4. After the claw 6 is adjusted to be clamped on the outer edge of the bakelite ring 4, the adjusting bolt 7 is tightened to fix the claw 6 on the steel ring 3, and finally the rim is subjected to subsequent machining.

[0038] Through the above technical solution, the adjustment of the claw 6 can meet the fixing of rims with different outer diameters, realize the universal improvement based on the fixed flange, greatly reduce the problem of frequent mold replacement due to different outer diameters of the rim, and thus reduce the production cost and management cost. By fixing the steel ring 3 on the aluminum ring 2, the reference surface of the aluminum ring 2 is more stable due to the steel ring 3, the overall strength is improved, and the flatness accuracy of drilling is further improved.

Claims

1. A rim drilling flange with adjustable outer diameter, characterized in that, include, The central ring seat has multiple outward-sloping support arms evenly distributed around its outer circumference, and a vertically upward-pointing core rod is located at the center. An aluminum ring is coaxially distributed with the central ring seat, and its bottom is connected to the outer end of the support arm; A steel ring is fixed to the top surface of the aluminum ring; A bakelite ring is fixed to the top surface of the steel ring; Multiple claws are fitted to the outside of the bakelite ring and can be adjusted in position radially along the bakelite ring.

2. The adjustable outer diameter rim drilling flange according to claim 1, characterized in that, The chuck includes vertically distributed chuck plates and horizontally distributed adjustment plates. The front end of the adjustment plate is fixedly connected to the bottom of the chuck plate, and the adjustment plate is provided with an elongated hole. The bottom surface of the bakelite ring is machined with a groove that extends through its width. The adjusting plate of the pawl is inserted into the groove, and the elongated hole of the pawl is fixed to the top surface of the steel ring by an adjusting bolt.

3. The adjustable outer diameter rim drilling flange according to claim 1, characterized in that, A connector is fixed to the top surface of the central ring seat, and the core rod is threaded onto the connector.

4. The adjustable outer diameter rim drilling flange according to claim 1, characterized in that, The top surface of the aluminum ring is provided with an annular opening groove, and the steel ring is assembled on the opening groove and fixed to the aluminum ring by a bolt assembly.

5. The adjustable outer diameter rim drilling flange according to claim 1, characterized in that, The number of support arms is 6-8, and the tilt angle of the support arms is 30°-45°.

6. The adjustable outer diameter rim drilling flange according to any one of claims 1-5, characterized in that, The jaws are made of aluminum.

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