Rim ball spinning forming equipment

Abstract

The utility model discloses rim ball spinning forming equipment which comprises a spinning machine table, a power rotating mechanism and a tailstock pushing mechanism, the power rotating mechanism and the tailstock pushing mechanism are oppositely arranged on the spinning machine table, and the end, facing the tailstock pushing mechanism, of the power rotating mechanism can clamp a rim workpiece cylinder and drive the rim workpiece cylinder to rotate. The end, facing the power rotating mechanism, of the tailstock pushing mechanism is fixedly provided with a ball sleeve clamp, the ball sleeve clamp is provided with a spinning inner cavity, and a plurality of balls are arranged on the cavity wall of the spinning inner cavity in an array rolling mode. The ball sleeve clamp is driven by the tailstock pushing mechanism to be pushed to the rotating rim workpiece cylinder so that the rim workpiece cylinder can be slowly arranged in the spinning inner cavity in a sleeved mode, and the rim workpiece cylinder can be rolled and formed into the required rim shape under the action of the balls. According to the utility model, the surface of a workpiece can be ensured not to be uneven, so that the quality of the rim is ensured, the process is simpler, the generated waste is less, and the material utilization rate is high.

Description

Technical Field

[0001] The utility model relates to a rim processing device, in particular to a rim ball spinning forming device. Background Art

[0002] The vehicle rim is the basis for mounting and fixing tires. Traditional vehicle rims are usually made of aluminum alloy materials by forging or casting. Casting has low cost and low strength, and products of the same strength are 50% heavier than forged parts. Forging has good strength, light weight and high cost. Whether it is casting or forging, the waste of raw materials is relatively serious, and there are many processes, long working hours, and high production costs.

[0003] There is also a method using spinning technology. The existing method using metal sheet spinning is: generally a piece of aluminum alloy sheet is rolled up and welded into a barrel, and the barrel is spun into a rim by a disc spinning tool. The disc spinning process not only has many processing steps, but also has the following shortcomings: 1. The product's circumferential runout is too large. Since the disc spinning tool cannot eliminate the stress of feeding and retracting when cutting into the workpiece for spinning, it will cause the workpiece to have too large local runout; 2. The surface roughness is very poor. Since the disc spinning tool is hard extruding the workpiece surface when moving horizontally, there is no rolling, so it causes deeper spiral lines; 3. The change in the shape of the rim will result in the need to compile a different CNC program each time, and the program changes a lot, and the cost of manual programming and experimental waste are very high. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art and provide a rim ball spinning forming device with low production cost, high production quality and simple process.

[0005] The technical solution of the utility model is as follows:

[0006] A rim ball spinning forming device comprises a spinning machine and a power rotating mechanism and a tailstock pushing mechanism relatively arranged on the spinning machine, wherein the power rotating mechanism can clamp the rim workpiece cylinder and drive the rim workpiece cylinder to rotate at one end facing the tailstock pushing mechanism, and a ball sleeve clamp is fixedly arranged at one end facing the power rotating mechanism of the tailstock pushing mechanism, and the ball sleeve clamp is provided with a spinning inner cavity, and a cavity wall of the spinning inner cavity is provided with a plurality of balls in an array-like rolling manner, and the ball sleeve clamp is driven by the tailstock pushing mechanism to push the rotating rim workpiece cylinder to slowly insert the rim workpiece cylinder into the spinning inner cavity and roll it into a desired rim shape under the action of the plurality of balls.

[0007] Furthermore, the power rotation mechanism includes a power shaft, an inner pull rod and a claw. The inner pull rod is arranged in the power shaft, one end of the inner pull rod is retracted inward, and the other end of the inner pull rod is provided with a claw, and the rim workpiece cylinder is clamped by the claw.

[0008] Furthermore, the tailstock pushing mechanism includes a linear guide rail, a tailstock assembly and a push-pull hydraulic cylinder. The tailstock assembly is movably arranged on the linear guide rail, the push-pull hydraulic cylinder is arranged at one end of the linear guide rail and its output shaft is connected to the tailstock assembly, and the ball sleeve clamp is fixedly arranged on the tailstock assembly.

[0009] Furthermore, the ball sleeve fixture includes an inner sleeve and an outer sleeve arranged inside and outside, the inner sleeve is provided with a plurality of ball mounting holes, the balls are installed in the ball mounting holes and fixed by pressure strips, and the outer sleeve is connected to the tailstock assembly through a connecting plate.

[0010] Furthermore, the end of the inner sleeve is fixed to the end of the outer sleeve by bolts.

[0011] Furthermore, the outer sleeve is composed of an upper semicircular cylinder and a lower semicircular cylinder connected by bolts.

[0012] Furthermore, the connecting plate and the tailstock assembly are fixed by bolts.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The utility model adopts the method of ball spinning integrated molding to make the rim workpiece cylinder into the rim of the required shape. Compared with the traditional spinning process, the material flow is smoother, which can ensure that the workpiece surface is smooth, thereby ensuring the quality of the rim, and the process is simpler, less waste is generated, and the material utilization rate is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of the structure of a wheel rim ball spinning forming device provided by the utility model;

[0017] Figure 2 It is a side view of the ball sleeve fixture of the utility model;

[0018] Figure 3It is a cross-sectional view of the inner sleeve of the utility model. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0020] In order to illustrate the technical solution of the present invention, specific embodiments are provided below for illustration.

[0021] Example

[0022] See also Figure 1 The present embodiment provides a rim ball spinning forming device, including a spinning machine 1, a power rotating mechanism 2 and a tailstock pushing mechanism 3 which are relatively arranged on the spinning machine 1. The power rotating mechanism 2 includes a power shaft 21, an inner pull rod 22 and a clamping claw 23. The inner pull rod 22 is arranged in the power shaft 21, one end of the inner pull rod 22 is retracted inwardly, and the other end of the inner pull rod 22 is provided with a clamping claw 23. When working, the rim workpiece cylinder 10 is placed on the clamping claw 23. When the inner pull rod 22 is pulled, the clamping claw 23 grasps the rim workpiece cylinder 10 inwardly, and the power shaft 21 can drive the rim workpiece cylinder 10 to rotate when it is running; the tailstock pushing mechanism 3 includes a linear guide The tailstock assembly 32 is movably arranged on the linear guide rail 31, the push-pull hydraulic cylinder 33 is arranged at one end of the linear guide rail 31 and its output shaft is connected to the tailstock assembly 32, and the ball sleeve fixture 4 is fixedly arranged at one end of the tailstock assembly 32 facing the power rotating mechanism 2. Under the drive of the push-pull hydraulic cylinder 33, the tailstock assembly 32 and the ball sleeve fixture 4 thereon can be driven to reciprocate along the linear guide rail 31 toward the direction of the power rotating mechanism 2. Figure 2 As shown, the ball sleeve fixture 4 includes an inner sleeve 41 and an outer sleeve 42 arranged inside and outside, the end of the inner sleeve 41 is fixed to the end of the outer sleeve 42 by bolts, and the outer sleeve 42 is composed of an upper semicircular cylinder 421 and a lower semicircular cylinder 422 connected by bolts. The upper semicircular cylinder 421 is fixed to the tailstock assembly 32 by bolts through a connecting plate 43, so that the ball sleeve fixture 4 is fixed and cannot rotate. The inner sleeve 41 is provided with a spinning inner cavity 44, combined with Figure 3 As shown, the inner sleeve 41 is provided with a plurality of ball mounting holes distributed in an array, and the ball mounting holes are equipped with balls 45 and fixed by pressure strips 46 .

[0023] Working principle: put the rim workpiece cylinder 10 on the claw 23 and pull the inner pull rod 22 to clamp the rim workpiece cylinder 10, then start the push-pull hydraulic cylinder 33 to drive the tailstock assembly 32 to move and push the ball sleeve fixture 4 to the rotating rim workpiece cylinder 10, so that the rim workpiece cylinder 10 rotating at a low speed (speed of 50 to 150 revolutions) is slowly inserted into the spinning inner cavity 44 and rolled into the desired rim shape under the action of a number of balls 45, then the power shaft 21 keeps rotating at a low speed, the tailstock assembly 32 is withdrawn, and the spinning workpiece is completed. Since the ball 45 will generate high temperature during operation, preferably, a cavity 461 is provided on the pressure strip 46 that fixes the ball 45, and a coolant can be introduced to cool it down.

[0024] The wheel rim ball spinning equipment uses a one-piece ball spinning method to make the wheel rim workpiece cylinder into a rim of the desired shape. Compared with the traditional spinning process, the material flow is smoother, which can ensure that the workpiece surface is smooth, thereby ensuring the quality of the rim. The process is simpler, less waste is generated, and the material utilization rate is high.

[0025] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wheel rim ball spinning device, characterized in that: The invention comprises a spinning machine and a power rotating mechanism and a tailstock pushing mechanism which are relatively arranged on the spinning machine. The power rotating mechanism can clamp the rim workpiece cylinder and drive the rim workpiece cylinder to rotate at one end facing the tailstock pushing mechanism. A ball sleeve fixture is fixedly arranged at one end facing the power rotating mechanism of the tailstock pushing mechanism. The ball sleeve fixture is provided with a spinning inner cavity. A plurality of balls are arranged on the cavity wall of the spinning inner cavity in an array-like rolling manner. The ball sleeve fixture is driven by the tailstock pushing mechanism to push the rotating rim workpiece cylinder, slowly insert the rim workpiece cylinder into the spinning inner cavity, and roll it into the desired rim shape under the action of the plurality of balls.

2. A wheel rim ball spinning device according to claim 1, characterized in that: The power rotation mechanism includes a power shaft, an inner pull rod and a clamping claw. The inner pull rod is arranged in the power shaft, one end of the inner pull rod is retracted inwardly, and the other end of the inner pull rod is provided with a clamping claw, and the rim workpiece cylinder is clamped by the clamping claw.

3. A wheel rim ball spinning device according to claim 1, characterized in that: The tailstock pushing mechanism comprises a linear guide rail, a tailstock assembly and a push-pull hydraulic cylinder. The tailstock assembly is movably arranged on the linear guide rail. The push-pull hydraulic cylinder is arranged at one end of the linear guide rail and its output shaft is connected to the tailstock assembly. The ball sleeve fixture is fixedly arranged on the tailstock assembly.

4. A wheel rim ball spinning device according to claim 3, characterized in that: The ball sleeve fixture comprises an inner sleeve and an outer sleeve arranged inside and outside, the inner sleeve is provided with a plurality of ball mounting holes, the balls are installed in the ball mounting holes and fixed by pressure strips, and the outer sleeve is connected to the tailstock assembly through a connecting plate.

5. The wheel rim ball spinning equipment according to claim 4, characterized in that: The end of the inner sleeve is fixed to the end of the outer sleeve by bolts.

6. The wheel rim ball spinning equipment according to claim 4, characterized in that: The outer sleeve is composed of an upper semicircular cylinder and a lower semicircular cylinder connected by bolts.

7. The wheel rim ball spinning equipment according to claim 4, characterized in that: The connecting plate and the tailstock assembly are fixed by bolts.

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