A crankshaft end surface polishing device

Abstract

The present invention discloses a crankshaft end face polishing device, comprising a polishing arm, a polishing belt guide block, a polishing belt guide wheel, a belt winding assembly, a polishing belt installation assembly, a polishing block push rod, a polishing block and a working cylinder. The polishing arm is vertically mounted on a bed, the working cylinder is mounted on the polishing arm, the polishing block push rod is arranged at the telescopic end of the working cylinder, and the polishing belt guide block is arranged at the front end of the polishing block push rod. The polishing block is rotatably arranged on the polishing arm, and the outer side of the polishing block is against the polishing belt. The polishing belt is sequentially wound and arranged on the polishing belt guide wheel, the belt winding assembly and the polishing belt installation assembly. In the crankshaft end face polishing device disclosed in the present application, the working cylinder pushes the polishing block push rod to move downward, the polishing block opens outward along the polishing belt guide block, the polishing belt is tightly pressed on the crankshaft end face, and forms a composite motion with the rotation of the crankshaft, thereby improving the end face polishing quality. By adjusting the feed position by servo, the variety replacement and adjustment can be realized, and the adjustment is convenient and simple.

Description

Technical Field

[0001] The invention relates to the field of machine tool equipment, in particular to a crankshaft end surface polishing device. Background Art

[0002] In recent years, motorcycle engines have increasingly higher requirements for crankshafts. In addition to polishing the circumference of the shaft diameter, end face polishing has been added to increase the surface roughness of the reference end face and ensure sealing.

[0003] At present, one method of crankshaft polishing is to polish the end face of the crankshaft by a special polishing machine. The purchase cost of special polishing machine equipment is high, which is not conducive to promotion; the other method is to use ordinary manual polishing, which is highly dangerous and the polishing accuracy cannot be guaranteed; the above two polishing methods will bring inconvenience to the daily polishing operation of the crankshaft, so under normal circumstances, motorcycle crankshaft polishing is still polished by simple polishing equipment.

[0004] However, most end face polishing machines can only press the polishing belt onto the end face and polish the end face by rotating the part axially. The polishing arm rests on the lower end of the crankshaft. Since the crankshaft polished each time may be different, due to the different changes in the shaft diameter, the center height of the positioning hole of the fixed part must be adjusted each time to meet the polishing needs. The adjustment is laborious and inconvenient. Moreover, the polishing accuracy of ordinary polishing machines is also very low.

[0005] Therefore, how to solve the drawbacks of the existing motorcycle engine crankshaft polishing equipment, such as complicated polishing operations and low polishing precision, is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0006] The purpose of the present invention is to provide a crankshaft end face polishing device, which can solve the problem of adjusting the position during the crankshaft polishing process by changing the polishing block and polishing belt structure of the existing polishing device, improve the polishing efficiency, and at the same time ensure the polishing accuracy.

[0007] In order to solve the above technical problems, the present invention provides a crankshaft end face polishing equipment, including a polishing arm, a polishing belt guide block, a polishing belt guide wheel, a belt winding assembly, a polishing belt mounting assembly, a polishing block push rod, a polishing block and a working cylinder, the polishing arm is vertically installed on the bed, the working cylinder is installed on the polishing arm, the polishing block push rod is arranged at the telescopic end of the working cylinder, and the polishing belt guide block is arranged at the front end of the polishing block push rod, the polishing block is rotatably arranged on the polishing arm, and the outer side of the polishing block is against the polishing belt, and the polishing belt is sequentially wound on the polishing belt guide wheel, the belt winding assembly and the polishing belt mounting assembly.

[0008] Preferably, it also includes a mounting plate for mounting the polishing arm, and the mounting plate is mounted on the lateral adjustment fixing plate.

[0009] Preferably, an adjustment screw seat and an adjustment screw are provided on the transverse adjustment fixing plate, the adjustment screw is arranged through the bottom of the mounting plate, and the adjustment screw is threadedly connected to the adjustment screw seat.

[0010] Preferably, a workbench and a servo electric cylinder are provided on the bed, the servo electric cylinder is connected to the workbench and is used to push the polishing arm to move radially along the crankshaft, and the lateral adjustment fixing plate is arranged in the dovetail seat of the workbench.

[0011] Preferably, a clamping block for fastening is provided at the bottom of the workbench.

[0012] Preferably, a linear guide pair is also provided on the bed, and the linear guide pair is symmetrically arranged on both sides of the workbench.

[0013] Preferably, a return spring is provided on the polishing arm, and the return spring is sleeved on the polishing block push rod.

[0014] Preferably, the polishing arm is provided with left and right return springs, and the left and right return springs are connected to the polishing block.

[0015] Preferably, the polishing arm is also provided with a changeable guide wheel assembly and a rear guide body assembly, and the polishing belt is sequentially wound around the changeable guide wheel assembly and the rear guide body assembly.

[0016] Preferably, a headstock and a tailstock are also provided on the bed, and the headstock and the tailstock are used for positioning the center hole of the crankshaft.

[0017] The crankshaft end face polishing equipment provided by the present invention comprises a polishing arm, a polishing belt guide block, a polishing belt guide wheel, a belt winding assembly, a polishing belt mounting assembly, a polishing block push rod, a polishing block and a working cylinder. The polishing arm is vertically mounted on a bed, the working cylinder is mounted on the polishing arm, the polishing block push rod is arranged at the telescopic end of the working cylinder, and the polishing belt guide block is arranged at the front end of the polishing block push rod. The polishing block is rotatably arranged on the polishing arm, and the outer side of the polishing block is against the polishing belt. The polishing belt is sequentially wound around the polishing belt guide wheel, the belt winding assembly and the polishing belt mounting assembly. The crankshaft end face polishing equipment disclosed in the present application has a servo electric cylinder that pushes the polishing arm forward and reaches a specified position, the crankshaft starts to rotate, and the working cylinder pushes the polishing block push rod forward. Under the push of the polishing block push rod, the polishing block opens outward along the polishing belt guide block, and the polishing belt wrapped around the polishing belt guide wheel, the belt winding assembly and the polishing belt mounting assembly is tightly pressed against the crankshaft end face to achieve crankshaft end face polishing. During operation, the polishing arm can achieve reciprocating motion along the crankshaft radial direction, forming a composite motion with the crankshaft rotation, thereby improving the end face polishing quality. The polishing block can be replaced between the metal fixed positioning block and the polishing block according to different crankshaft requirements, and is suitable for polishing the left end face, the right end face or the left and right end faces. Compared with the method in which the polishing arm is below the crankshaft, even if the crankshaft diameter changes, the type change and adjustment can be achieved by simply adjusting the feed position through the servo, and the adjustment is convenient and simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, 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 embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the overall structure of a specific implementation method provided by the present invention;

[0020] Figure 2 for Figure 1 a top view of the structure shown;

[0021] Figure 3 for Figure 1 a side view of the structure shown;

[0022] Figure 4 for Figure 1 Schematic diagram of the polishing arm structure shown.

[0023] in, Figure 1-Figure 4 middle:

[0024] Polishing arm—1, polishing belt guide block—2, polishing belt guide wheel—3, belt wrapping assembly—4, polishing belt mounting assembly—5, polishing block push rod—6, polishing block—7, working cylinder—8, bed—9, polishing belt—10, mounting plate—11, lateral adjustment fixing plate—12, adjusting screw seat—13, adjusting screw—14, workbench—15, servo electric cylinder—16, clamping block—17, linear guide pair—18, return spring—19, left and right return springs—20, variable guide wheel assembly—21, rear guide body assembly—22, headstock—23, tailstock—24. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Please refer to Figures 1 to 4 , Figure 1 A schematic diagram of the overall structure of a specific implementation method provided by the present invention; Figure 2 for Figure 1 a top view of the structure shown; Figure 3 for Figure 1 a side view of the structure shown; Figure 4 for Figure 1 Schematic diagram of the polishing arm structure shown.

[0027] In a specific embodiment provided by the present invention, it mainly includes a polishing arm 1, a polishing belt guide block 2, a polishing belt guide wheel 3, a belt winding assembly 4, a polishing belt installation assembly 5, a polishing block push rod 6, a polishing block 7 and a working cylinder 8. The polishing arm 1 is vertically installed on the bed 9, the working cylinder 8 is installed on the polishing arm 1, the polishing block push rod 6 is arranged at the telescopic end of the working cylinder 8, and the polishing belt guide block 2 is arranged at the front end of the polishing block push rod 6, the polishing block 7 is rotatably arranged on the polishing arm 1, and the outer side of the polishing block 7 is against the polishing belt 10, and the polishing belt 10 is wound and arranged on the polishing belt guide wheel 3, the belt winding assembly 4 and the polishing belt installation assembly 5 in sequence.

[0028] Among them, the polishing arm 1 is vertically installed on the mounting plate 11 and fixed on the horizontal adjustment fixing plate 12 by bolts. The horizontal fixing plate 12 and the workbench are positioned by the dovetail surface, and the lower end is fixedly installed on the bed 9 by the linear guide pair 18. The polishing arm 1 is used to drive the overall polishing assembly to move up and down. The working cylinder 8 is installed on the polishing arm 1, and the polishing block push rod 6 is arranged at the telescopic end of the working cylinder 8. The working cylinder 8 is used to drive the polishing block push rod 6 to move up and down, and the polishing belt guide block 2 is arranged at the front end of the polishing block push rod 6. The polishing block 7 is rotatably arranged on the polishing arm 1, and the outer side of the polishing block 7 is against the polishing belt 10. One end of the polishing block 7 is not fixed, and the other end is connected to the torsion spring, and can swing in a circle along the center of the torsion spring to drive the polishing belt 10 to rotate. The polishing belt 10 is wound around the polishing belt guide wheel 3, the belt winding assembly 4 and the polishing belt mounting assembly 5 in sequence. The polishing belt 10 is used to polish the end face of the crankshaft.

[0029] Specifically, in the actual application process, the crankshaft is manually positioned through the front and rear centers of the machine tool, the crankshaft is installed on the polishing machine tool, the shift fork drives the part to rotate, and after the crankshaft is fixed, the cycle start button of the polishing machine tool is pressed, and the servo electric cylinder 16 pushes the polishing arm 1 to move forward and reach the specified position, the crankshaft starts to rotate, and the working cylinder 8 pushes the polishing block push rod 6 to move forward. Since the inclined surface at the front end of the polishing block push rod 6 is against the polishing block 7, under the push of the polishing block push rod 6, the polishing block 7 is opened outward along the polishing belt guide block 2, and the polishing belt 10 wrapped around the polishing belt guide wheel 3, the belt winding assembly 4 and the polishing belt installation assembly 5 is tightly pressed against the end face of the crankshaft to achieve polishing of the crankshaft end face. After polishing is completed, the working cylinder 8 drives the polishing block push rod 6 to retreat, and the polishing block 7 is reset to leave the polishing end face by the torsion spring. Finally, the polishing arm 1 retreats to complete the polishing process.

[0030] In order to optimize the advantage of the crankshaft end face polishing equipment in the above embodiment that it can adapt to the polishing requirements of different models of crankshafts, the crankshaft end face polishing equipment also includes a mounting plate 11 for mounting the polishing arm 1, and the mounting plate 11 is mounted on the lateral adjustment fixing plate 12; and an adjustment screw seat 13 and an adjustment screw 14 are provided on the lateral adjustment fixing plate 12, and the adjustment screw 14 is arranged through the bottom of the mounting plate 11, and the adjustment screw 14 is threadedly connected to the adjustment screw seat 13. In the actual polishing process, the crankshafts to be polished will not be of the same model and specification, and the crankshafts will have different sizes. This will cause the crankshaft end face to be misaligned with the polishing belt of the polishing equipment disclosed in the present application after the crankshaft is fixed to the polishing machine. At this time, by loosening the adjusting screw 14, the lateral adjustment fixing plate 12 is adjusted left and right, and the mounting plate 11 is adjusted left and right to achieve left and right adjustment of the polishing arm 1. After adjusting the position, the adjusting screw 14 and the adjusting screw seat 13 are tightened to fix the polishing arm 1. At the same time, the alignment of the polishing arm 1 and the crankshaft can be adjusted to meet different crankshaft polishing requirements.

[0031] It should be noted that a clamping block 17 for fastening is provided at the bottom of the workbench 15. After the position adjustment described above is completed, the workbench 15 can be clamped by the clamping block 17 at the bottom of the workbench 15 to ensure that the left and right positions of the polishing arm 1 are determined.

[0032] Furthermore, a workbench 15 and a servo electric cylinder 16 are provided on the bed 9. The servo electric cylinder 16 is connected to the workbench 15 and is used to push the polishing arm 1 to move along the radial direction of the crankshaft. The lateral adjustment fixing plate 12 is arranged in the dovetail seat of the workbench 15. This design allows the polishing arm 1 to move along the radial direction of the crankshaft. During the polishing process, the servo electric cylinder 16 pushes the entire polishing device to make a small reciprocating motion back and forth at a frequency of 30 times per minute, which forms a composite motion with the rotation of the crankshaft itself, making it easier for the polishing liquid to wash away the impurities thrown away, thereby improving the polishing quality.

[0033] Furthermore, a linear guide pair 18 is also provided on the bed 9, and the linear guide pair 18 is symmetrically arranged on both sides of the workbench 15. The linear guide pair 18 is used as a guide for the workbench 15 to move forward and backward, so that the polishing arm 1 can find the polishing position of the crankshaft end face, so that the subsequent polishing arm 1 drives the polishing block 7 to move downward to find the position of the crankshaft end face.

[0034] It should be noted that the polishing arm 1 is provided with a return spring 19, which is sleeved on the polishing block push rod 6. Since the return spring 19 has a return function, after the end surface of the crankshaft is polished, the polishing block push rod 6 may be stuck and cannot be returned. At this time, the return spring 19 can ensure that the polishing block push rod 6 is smoothly returned, so that the polishing operation can be cyclically performed.

[0035] Furthermore, the polishing arm 1 is provided with left and right return springs 20, which are connected to the polishing block 7. The left and right return springs 20 are used to ensure the return of the polishing block 7. During the polishing process, the polishing block 7 abuts against the polishing belt 10 for a long time of polishing operation. The left and right return springs 20 can ensure that the polishing block 7 can be evenly arranged at the front end of the polishing block push rod 6 to ensure the polishing accuracy.

[0036] It should also be noted that the polishing arm 1 is also provided with a changeable guide assembly 21 and a rear guide assembly 22, and the polishing belt 10 is sequentially wound around the changeable guide assembly 21 and the rear guide assembly 22. As described above, the entire polishing process is performed by the contact between the polishing belt 10 and the end face of the crankshaft. The polishing belt 10 is in a rotating state during the polishing process. It is wound around the polishing belt guide wheel 3, the belt winding assembly 4 and the polishing belt installation assembly 5 at the end face position of the crankshaft, and is wound around the changeable guide assembly 21 and the rear guide assembly 22 at the driving position, so as to ensure the stability of the forward and backward rotation of the polishing belt 10 and improve the polishing accuracy.

[0037] Further, a headstock 23 and a tailstock 24 are also provided on the bed 9, and the headstock 23 and the tailstock 24 are used to locate the center hole of the crankshaft. The headstock 23 and the tailstock 24 must be provided, and the headstock 23 and the tailstock 24 are used to fix the crankshaft parts, and the headstock 23 and the tailstock 24 are accurately positioned, thereby improving the precision of the polishing operation.

[0038] To sum up, the crankshaft end face polishing equipment provided in this embodiment mainly includes a polishing arm, a polishing belt guide block, a polishing belt guide wheel, a belt winding assembly, a polishing belt mounting assembly, a polishing block push rod, a polishing block and a working cylinder. The polishing arm is vertically installed on the bed, the working cylinder is installed on the polishing arm, the polishing block push rod is arranged at the telescopic end of the working cylinder, and the polishing belt guide block is arranged at the front end of the polishing block push rod. The polishing block is rotatably arranged on the polishing arm, and the outer side of the polishing block is against the polishing belt. The polishing belt is wound on the polishing belt guide wheel, the belt winding assembly and the polishing belt mounting assembly in sequence. The crankshaft end face polishing equipment disclosed in the present application has a servo electric cylinder that pushes the polishing arm forward and reaches a specified position, the crankshaft starts to rotate, and the working cylinder pushes the polishing block push rod forward. Under the push of the polishing block push rod, the polishing block opens outward along the polishing belt guide block, and the polishing belt wrapped around the polishing belt guide wheel, the belt winding assembly and the polishing belt mounting assembly is tightly pressed against the crankshaft end face to achieve crankshaft end face polishing. During operation, the polishing arm can achieve reciprocating motion along the crankshaft radial direction, forming a composite motion with the crankshaft rotation, thereby improving the end face polishing quality. The polishing block can be replaced between the metal fixed positioning block and the polishing block according to different crankshaft requirements, and is suitable for polishing the left end face, the right end face or the left and right end faces. Compared with the method in which the polishing arm is below the crankshaft, even if the crankshaft diameter changes, the type change and adjustment can be achieved by simply adjusting the feed position through the servo, and the adjustment is convenient and simple.

[0039] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A crankshaft end surface polishing device, characterized in that: The invention comprises a polishing arm (1), a polishing belt guide block (2), a polishing belt guide wheel (3), a belt winding assembly (4), a polishing belt mounting assembly (5), a polishing block push rod (6), a polishing block (7) and a working cylinder (8), wherein the polishing arm (1) is vertically mounted on a bed (9), the working cylinder (8) is mounted on the polishing arm (1), the polishing block push rod (6) is arranged at the telescopic end of the working cylinder (8), and the polishing belt guide block (2) is arranged at the front end of the polishing block push rod (6), the polishing block (7) is rotatably arranged on the polishing arm (1), and the outer side of the polishing block (7) is against the polishing belt (10), and the polishing belt (10) is wound and arranged on the polishing belt guide wheel (3), the belt winding assembly (4) and the polishing belt mounting assembly (5) in sequence; It also comprises a mounting plate (11) for mounting the polishing arm (1), wherein the mounting plate (11) is mounted on a lateral adjustment fixing plate (12); The lateral adjustment fixing plate (12) is provided with an adjustment screw seat (13) and an adjustment screw (14), the adjustment screw (14) is arranged through the bottom of the mounting plate (11), and the adjustment screw (14) is threadedly connected to the adjustment screw seat (13); A workbench (15) and a servo electric cylinder (16) are arranged on the bed (9); the servo electric cylinder (16) is connected to the workbench (15) and is used to push the polishing arm (1) to move along the radial direction of the crankshaft; and the lateral adjustment fixing plate (12) is arranged in a dovetail seat of the workbench (15); A clamping block (17) for fastening is arranged at the bottom of the workbench (15); The polishing arm (1) is provided with left and right return springs (20), and the left and right return springs (20) are connected to the polishing block (7); The polishing arm (1) is also provided with a changeable guide wheel assembly (21) and a rear guide body assembly (22), and the polishing belt (10) is wound around the changeable guide wheel assembly (21) and the rear guide body assembly (22) in sequence; The bed body (9) is also provided with a headstock (23) and a tailstock (24), and the headstock (23) and the tailstock (24) are used for positioning the center hole of the crankshaft.

2. The crankshaft end surface polishing device according to claim 1, characterized in that: The bed (9) is also provided with a linear guide pair (18), and the linear guide pair (18) is symmetrically arranged on both sides of the workbench (15).

3. The crankshaft end surface polishing device according to any one of claims 1 to 2, characterized in that: The polishing arm (1) is provided with a return spring (19), and the return spring (19) is sleeved on the polishing block push rod (6).

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