Direction column boring equipment

Abstract

The utility model relates to the technical field of motorcycle steering column machining devices, in particular to steering column boring equipment which comprises a machine base arranged on a boring machine workbench, a sliding base located on one side of the machine base and a clamping mechanism located above the sliding base. The clamping mechanism comprises a positioning assembly fixed to the sliding base, a pressing assembly located above the positioning assembly and a point supporting assembly fixed to the sliding base. The pressing assembly can be pressed on the positioning assembly; the point supporting assembly is located at one end of the positioning assembly. The point supporting assembly comprises an air cylinder fixed in the sliding base, a square base fixed to the end of a piston rod of the air cylinder and a supporting column fixed to the upper portion of the square base, the square base comprises a cover plate and a sliding column which are integrally formed, the bottom of the sliding column is fixed to the piston rod of the air cylinder, and the cover plate is located above the sliding base. According to the device, boring machining can be conducted on the steering column, the boring machining precision is improved, the assembling error precision of the steering column in the follow-up assembling process can be reduced, and the product quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motorcycle steering column processing devices, in particular to a boring equipment for steering columns. Background Art

[0002] The motorcycle steering column is an important component on the motorcycle head, which is used to connect the handlebar and the front fork shock absorber. The steering column includes a lower coupling plate and a column fixed on the lower coupling plate. There are three holes on the lower coupling plate, and the column is welded and fixed in the middle hole. The mounting holes on both sides of the column are used to mount the shock absorber. The upper end of the column is connected to the upper coupling plate and the handlebar. The lower coupling plate is connected to the front fork of the motorcycle and the wheel under the front fork. The driver can transmit the steering torque to the wheel through the steering column by the handlebar, so as to control the steering of the motorcycle head.

[0003] Since the column is welded and fixed in the middle hole of the lower coupling plate, it is easy to deform after welding, resulting in a change in the parallelism reference of the column and the mounting holes on both sides of the column, making the axis of the column and the mounting holes on both sides of the column non-parallel. When assembled to the frame, problems such as inability to assemble or assembly deformation are likely to occur. Therefore, in order to ensure the unity of the reference, usually after welding the column, it is also necessary to perform boring processing on the other two mounting holes on the lower coupling plate, so as to correct the reference of the mounting holes on both sides of the column with the column. The boring is processed by a special boring equipment. For example, in the prior art "A multi-hole one-time boring device for motorcycle steering column connecting plates" (Publication No.: CN201960154U), the lower coupling plate is separately clamped on the machine tool fixture by means of screw pressing, and then the boring tool is fed horizontally to process multiple holes of the workpiece. However, the prior art still has the following technical problems:

[0004] The fixture in the prior art uses the screw pressing method and can only clamp the lower coupling plate separately. In order to correct the parallelism reference of the column and the mounting holes on both sides of the column on the steering column, when positioning the workpiece, the outer cylindrical surface of the column should be used as the positioning surface during clamping to ensure that the bored mounting holes can be parallel to the column and achieve the purpose of reference correction. However, the fixture structure of the prior art can only press the lower coupling plate and cannot clamp the column, resulting in that the boring equipment cannot clamp and process the entire steering column with the column, and thus cannot correct the reference of the mounting holes on both sides of the column. Summary of the Utility Model

[0005] The utility model provides a boring equipment for steering columns, which can solve the problem that the boring equipment in the prior art cannot clamp and position the steering column with the column, resulting in the inability to correct the reference of the mounting holes on both sides of the column.

[0006] The present application provides the following technical solutions: A boring equipment for steering columns, including a machine base arranged on the workbench of a boring machine, a sliding seat located on one side of the machine base, and a clamping mechanism located above the sliding seat;

[0007] The clamping mechanism includes a positioning component fixed on the slide seat, a pressing component located above the positioning component, and a point support component fixed on the slide seat; the pressing component can be pressed onto the positioning component; the point support component is located at one end of the positioning component.

[0008] The point support component includes a cylinder fixed inside the slide seat, a square seat fixed to the end of the cylinder piston rod, and a pillar fixed to the upper part of the square seat. The square seat includes an integrally formed cover plate and a sliding column. The bottom of the sliding column is fixed to the cylinder piston rod, and the cover plate is located above the slide seat.

[0009] Beneficial effects:

[0010] The clamping stability is improved. Since the lower connecting plate is fixed to one end of the column, when clamping and positioning the entire steering column, not only how to use the outer cylindrical surface of the column as the positioning surface needs to be considered, but also the weight of the lower connecting plate at the end of the column may cause the entire steering column to tilt during positioning. Therefore, through the combination of the positioning component, the pressing component, and the point support component, the column of the steering column is pressed onto the positioning component by the positioning component, making the pressed column in a horizontal state, achieving clamping and fixing with the outer cylindrical surface of the column as the positioning reference. In this way, when the boring tool feeds, its feeding direction is parallel to the central axis direction of the column, which is beneficial to ensuring that the installation holes on both sides of the column are parallel to the central axis of the column after machining, improving the boring machining accuracy; in addition, the cylinder drives the square seat to move upward, enabling the pillar to support the bottom of the lower connecting plate, thereby offsetting the weight of the lower connecting plate, and the steering column will not have a center of gravity tilt due to the weight of the lower connecting plate, thus ensuring the balance of the entire steering column and improving the clamping stability; in summary, through the combination of the positioning component, the pressing component, and the point support component, not only is the column ensured as the positioning reference surface, but also the center of gravity of the entire steering column is supported to a balanced state by the point support component, improving the accuracy during boring machining, achieving the purpose of correcting the reference of the installation holes on both sides of the column, being beneficial to reducing the assembly error accuracy of the steering column during subsequent assembly, and improving the product quality.

[0011] Furthermore, the point support component further includes a trapezoidal block fixed above the slide seat. The trapezoidal block is provided with a through hole in the middle, and the sliding column of the square seat can axially slide in the through hole of the trapezoidal block.

[0012] Beneficial effects: The trapezoidal block is used to block the gap between the sliding column and the slide seat, preventing iron filings from entering the gap during the boring machining process, so as to prevent the cylinder from getting stuck when driving the sliding column to move up and down.

[0013] Furthermore, the positioning component includes a first support and a second support fixed above the slide seat. The first support and the second support are oppositely arranged at both ends of the slide seat, and the point support component is located on one side of the first support.

[0014] Beneficial effects: The first support and the second support are arranged oppositely, which can support both ends of the column of the steering column, ensuring stability during clamping and processing.

[0015] Furthermore, the pressing assembly includes a mounting post fixed on the sliding seat, a hydraulic cylinder fixed on the mounting post, a connecting plate fixed at the end of the piston rod of the hydraulic cylinder, a pressing plate fixed below the connecting plate, and a pressing block assembly fixed at the bottom of the pressing plate. The pressing block assembly includes a first pressing block and a second pressing block. The first pressing block is arranged vertically opposite to the first support, and the second pressing block is arranged vertically opposite to the second support.

[0016] Beneficial effects: The column of the steering column is placed on the first support and the second support. Driven by the hydraulic cylinder, the first pressing block and the second pressing block can be respectively pressed onto the first support and the second support, thereby realizing clamping and fixing of the column.

[0017] Furthermore, V-shaped notches are provided on the first support, the second support, the first pressing block, and the second pressing block.

[0018] Beneficial effects: The V-shaped notches can better adapt to columns of different diameters, improving the versatility of the fixture. At the same time, the V-shaped notches can evenly distribute the pressure, preventing deformation of the column when it is pressed.

[0019] Furthermore, the thickness dimension of the first support is greater than that of the second support.

[0020] Beneficial effects: Since the lower connecting plate is located at one end of the column and is relatively heavy, thickening the thickness of the first support can strengthen the strength of the support at the end where the lower connecting plate is located, improving the service life of the fixture. Description of the drawings

[0021] Figure 1 This is the main structural view of the present utility model.

[0022] Figure 2 This is Figure 1 the right view of

[0023] Figure 3 This is Figure 1 the enlarged view of A in

[0024] Figure 4 This is the main view of the device with the steering column placed on it.

[0025] Figure 5 This is Figure 1 the top view after removing the pressing assembly of

[0026] Figure 6 This is Figure 5 the top view with the steering column placed on it. Detailed implementation manners

[0027] The following is a further detailed description through specific implementation manners:

[0028] The markings in the attached drawings of the specification include: workbench 1, machine base 101, boring bar 2, hydraulic cylinder 3, hydraulic cylinder piston rod 4, connecting plate 5, pressing plate 6, first pressing block 7, first support 8, mounting column 9, second support 10, sliding seat 11, lower connecting plate 12, column 13, air cylinder 14, air cylinder piston rod 15, trapezoidal block 16, support column 17, cover plate 18, sliding column 19, second pressing block 20.

[0029] Embodiment 1

[0030] As Figures 1 to 6 shown, the steering column boring equipment includes a machine base arranged on the workbench of the boring machine, a sliding seat 11 on one side of the machine base, and a clamping mechanism above the sliding seat 11. Two boring bars 2 are arranged on the machine base, and the boring bars 2 are driven by a motor and a main shaft in the machine base to rotate; a slide rail is arranged on the workbench, and the sliding seat 11 is slidably connected to the slide rail, and the sliding seat 11 moves along the slide rail on the workbench driven by a lead screw.

[0031] As Figure 1 and Figure 2 shown, the clamping mechanism includes a positioning component fixed on the sliding seat 11, a pressing component above the positioning component, and a point support component fixed on the sliding seat 11.

[0032] The positioning component includes a first support 8 and a second support 10 fixed above the sliding seat 11 by screws. The first support 8 and the second support 10 are oppositely arranged at both ends of the sliding seat 11. V-shaped chucks are provided on the first support 8 and the second support 10, and the thickness dimension of the first support 8 is greater than that of the second support 10.

[0033] The pressing component includes a mounting column 9 fixed on the sliding seat 11, a hydraulic cylinder 3 fixed above the mounting column 9, a connecting plate 5 fixed to the lower end of the hydraulic cylinder piston rod 4, a pressing plate 6 fixed below the connecting plate 5, and a pressing block component fixed to the bottom of the pressing plate 6. The pressing block component includes a first pressing block 7 and a second pressing block 20 fixed to the bottom of the pressing plate 6 by screws. The first pressing block 7 and the first support 8 are arranged vertically opposite to each other, the second pressing block 20 and the second support 10 are arranged vertically opposite to each other, and V-shaped chucks are provided on both the first pressing block 7 and the second pressing block 20.

[0034] As Figure 1 and Figure 3As shown in the figure, the point support assembly is located on the side of the first support 8 close to the boring bar 2. The point support assembly includes a cylinder 14 fixed inside the slide base 11, a square seat fixed to the end of the cylinder piston rod 15, a support column 17 fixed to the upper part of the square seat, and a trapezoidal block 16 fixed above the slide base 11. The square seat includes an integrally formed cover plate 18 and a slide post 19. The bottom of the slide post 19 is fixed to the cylinder piston rod 15. The cover plate 18 is located above the trapezoidal block 16. There is a through hole in the middle of the trapezoidal block 16. The slide post 19 extends upward from inside the slide base 11 to above the trapezoidal block 16. The cylinder 14 can drive the slide post 19 to slide axially in the through hole of the trapezoidal block 16. When the cylinder piston rod 15 moves downward, the bottom surface of the cover plate 18 contacts the upper surface of the trapezoidal block 16, thereby covering the gap between the through hole of the trapezoidal block 16 and the slide post 19 to prevent iron filings from entering the gap during boring processing.

[0035] The usage method of this device is as follows:

[0036] As Figures 4 to 6 shown in the figure, during positioning, place the column 13 of the direction column in the V-shaped notches of the first support 8 and the second support 10. The parts to be processed at both ends of the lower connecting plate 12 are located above the support column 17. Start the equipment. The hydraulic cylinder 3 drives the first pressing block 7 and the second pressing block 20 to move downward, so that the first pressing block 7 is pressed onto the first support 8, and the second pressing block 20 is pressed onto the second support 10. At this time, the column 13 is tightened. Then the cylinder 14 drives the slide post 19 to move upward, so that the upper end of the support column 17 tightly presses the lower connecting plate 12 to form a support for the lower connecting plate 12. At this time, the entire direction column is tightly pressed and positioned. Then, driven by the lead screw, the slide base 11 moves towards the boring bar 2, and the rotating boring bar 2 can perform boring processing on the installation holes on both sides of the column 13 located on the lower connecting plate 12. After the processing is completed, the machine tool stops, and the pressing assembly resets, and then the direction column can be removed.

[0037] The above are only the embodiments of the present invention. The present invention is not limited to the fields involved in this implementation case. Common knowledge such as the specific structures and characteristics known in the solution is not described in detail here. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. A steering column boring device, comprising a machine base arranged on a boring machine workbench, a slide seat located on one side of the machine base, and a clamping mechanism located above the slide seat, characterized in that: The clamping mechanism includes a positioning assembly fixed on the slide, a pressing assembly located above the positioning assembly, and a point support assembly fixed on the slide; the pressing assembly can be pressed onto the positioning assembly; the point support assembly is located at one end of the positioning assembly; The point support assembly includes a cylinder fixed in a sliding seat, a square seat fixed to the end of a cylinder piston rod, and a support column fixed to the upper part of the square seat. The square seat includes an integrally formed cover plate and a sliding column. The bottom of the sliding column is fixed to the cylinder piston rod, and the cover plate is located above the sliding seat.

2. The steering column boring device according to claim 1, characterized in that: The point support assembly also includes a trapezoidal block fixed above the sliding seat, a through hole is provided in the middle of the trapezoidal block, and the sliding column of the square seat can slide axially in the through hole of the trapezoidal block.

3. The steering column boring device according to claim 2, characterized in that: The positioning assembly includes a first support and a second support fixed above the slide, the first support and the second support are relatively arranged at two ends of the slide, and the point support assembly is located on one side of the first support.

4. The steering column boring device according to claim 3, characterized in that: The clamping assembly includes a mounting column fixed on a slide, a hydraulic cylinder fixed on the mounting column, a connecting plate fixed on the end of a piston rod of the hydraulic cylinder, a pressing plate fixed under the connecting plate, and a pressing block assembly fixed at the bottom of the pressing plate, wherein the pressing block assembly includes a first pressing block and a second pressing block, wherein the first pressing block is disposed opposite to the first support in an upper and lower direction, and the second pressing block is disposed opposite to the second support in an upper and lower direction.

5. The steering column boring device according to claim 4, characterized in that: The first support, the second support, the first pressing block and the second pressing block are all provided with V-shaped bayonet holes.

6. The steering column boring device according to claim 5, characterized in that: The thickness of the first support is greater than that of the second support.

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