A motorcycle crankshaft assembly crankpin hole angle detection device

Abstract

The application provides a motorcycle crankshaft assembly crank pin hole angle detection device, which can quickly know the angle value of the crank pin hole according to the crank pin hole angle requirement, by inserting the measuring head on the measuring assembly into the crank pin hole and through the change of the pointer of the dial plate, so that the long-time three-coordinate detection mode can be replaced, the crank hole angle value can be directly and quickly and efficiently measured on the production site, the detection value is consistent through three-coordinate rechecking and verification, the detection value can be quickly obtained, and the production efficiency is improved.

Description

Technical Field

[0001] This invention relates to a crank pin detection device, and more specifically, a crank pin hole angle detection device for a motorcycle crankshaft assembly. Background Technology

[0002] The crankpin locating hole angle requirement is the angle between the crankpin locating hole and the center of the crankpin and the center of the crankshaft body. Since the crankshaft has been press-fitted into a crankshaft assembly, conventional inspection methods are no longer feasible. In this case, only a coordinate measuring machine (CMM) can be used for inspection. However, CMMs are expensive, time-consuming, and require personnel with a certain level of expertise, resulting in high inspection costs. From a production perspective, the inability to obtain inspection results in a timely manner affects production efficiency. Summary of the Invention

[0003] This invention provides a device for detecting the crank pin hole angle of a motorcycle crankshaft assembly, which can quickly obtain the detection value, thereby improving production efficiency.

[0004] The present invention adopts the following technical solution: a crank pin hole angle detection device for a motorcycle crankshaft assembly, which mainly includes a base, a support platform, a straightening component and a measuring component. The straightening component and the measuring component are installed on the base and located on both sides of the support platform. The support platform is fixedly installed on the base. V-shaped support blocks are symmetrically distributed on both sides of the support platform. Each V-shaped support block has a V-shaped groove on its upper part. An arc-shaped pad is installed in one of the V-shaped grooves. The crankshaft assembly is placed in the two V-shaped grooves. A transverse slide rail groove and a longitudinal slide rail groove are also provided on the base. The transverse slide rail groove is parallel to the direction of the crankshaft assembly placed in the V-shaped groove, and the longitudinal slide rail groove is perpendicular to the direction of the crankshaft assembly placed in the V-shaped groove.

[0005] The alignment assembly mainly includes a positioning platform, a pressure block, a slide rail I, and a slider I. The slide rail I is installed in a longitudinal slide rail groove. The upper part of the positioning platform is a mounting base. A bushing I is inserted into the mounting hole of the mounting base, and a tightening shaft is installed in the bushing I. The bottom of the positioning platform is installed on the slider I. The slide groove at the bottom of the slider I is located on the slide rail I, and the slider I moves on the slide rail I. A vertical pressure block is provided at one end of the slide rail I. The pressure block is installed on the side of the base. When the slider I drives the positioning platform to slide into position on the slide rail I, the pressure block locks the position of the positioning platform through the locking member I. The measuring assembly mainly includes a vertical support base, a side slider, a side slide rail, a bottom slider, a bottom slide rail, and a measuring instrument assembly. The upper part of the support base is fixedly installed. There is a fixed block, and a bottom slider is provided at the bottom of the support base. The bottom slide rail is installed in the transverse slide rail groove. The groove on the bottom surface of the bottom slider is located on the bottom slide rail and the bottom slider moves on the bottom slide rail. A side slide rail groove is provided on the side of the support base opposite to the support platform. The side slide rail is installed in the side slide rail groove. One surface of the side slider is provided with a groove. The groove of the side slider is located on the side slide rail and the side slider moves on the side slide rail. An assembly gauge holder is installed on the other surface of the side slider. A measuring gauge assembly is installed on the assembly gauge holder. The measuring gauge assembly is opposite to the crankshaft assembly placed on the V-groove. When the side slider drives the assembly gauge holder to move into place on the side slide rail, the fixed block locks the position of the assembly gauge holder through locking element II.

[0006] Furthermore, the measuring instrument assembly mainly includes a needle block, a dial block, and a measuring shaft. The needle block is a long strip-shaped block with one end rounded and the other end square. The square end of the needle block is mounted on the mounting base. The rounded end of the needle block has a mounting hole and a needle. The measuring shaft is mounted on the dial block through a measuring shaft hole at the bottom of the dial block. A measuring head is provided at one end of the measuring shaft. A central hole is provided in the middle of the bottom rotating shaft of the dial block. The dial block is fixedly connected after the mounting shaft assembly passes through the central hole and the mounting hole.

[0007] Furthermore, the mounting shaft assembly mainly includes a shaft core II and a bushing, with the shaft core II and bushing connected by a threaded connection. Further, the bottom side of the positioning platform has a threaded hole I, and the pressure block has a threaded hole II opposite to threaded hole I. The locking element I is a locking bolt I. When the slider I drives the positioning platform to slide into position on the slide rail I, the locking bolt I passes through threaded hole I and threaded hole II sequentially from front to back to fix the position of the positioning platform.

[0008] Furthermore, the top of the assembly base is provided with a threaded hole Ⅲ, and the fixed block is provided with a threaded hole Ⅳ at a position corresponding to the assembly base. The locking component Ⅱ is set as a locking bolt Ⅱ. When the side slider drives the assembly base to move into place on the side slide rail, the locking bolt Ⅱ passes through the threaded hole Ⅳ and the threaded hole Ⅲ from top to bottom to fix the position of the assembly base.

[0009] The present invention has the following beneficial effects: After adopting the above technical solution, the present invention, based on the crank pin hole angle requirement, straightens the crankshaft connecting rod assembly through a straightening component, and then, by inserting the measuring head on the measuring component into the crank pin hole, the angle value of the crank pin hole can be quickly determined by the change of the pointer on the dial. This can replace the time-consuming three-coordinate measuring machine (CCM) inspection method, and directly and quickly measure the crank hole angle value on the production site. Through three-coordinate measuring machine (CCM) re-inspection and verification, the measured values ​​are consistent, and the measured values ​​can be obtained quickly, thereby improving production efficiency. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the universal crank pin hole angle detection device of the present invention.

[0012] Figure 2 This is a schematic diagram of the universal crank pin hole angle detection device of the present invention.

[0013] Figure 3 This is a schematic diagram of the measurement component structure of the present invention.

[0014] Figure 4 This is a schematic diagram of the straightening component structure of the present invention.

[0015] Figure 5 This is a schematic diagram illustrating the implementation steps of the universal crank pin hole angle detection device of the present invention.

[0016] Figure 6 This is a cross-sectional view of the crankshaft assembly of the present invention. Detailed Implementation

[0017] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0018] exist Figure 1 , Figure 2 and Figure 6This invention provides a device for detecting the crank pin hole angle of a motorcycle crankshaft assembly. It mainly includes a base 1, a support platform 2, a straightening assembly 3, and a measuring assembly 4. The straightening assembly 3 and the measuring assembly 4 are mounted on the base 1 and located on both sides of the support platform 2. In this embodiment, the straightening assembly 3 is mounted on the base 1 via bolts and threaded holes, and the measuring assembly 4 is also mounted on the base 1 via bolts and threaded holes. The support platform 2 is fixedly mounted on the base 1. V-shaped support blocks 5 are symmetrically distributed on both sides of the support platform 2. Each V-shaped support block 5 has a V-shaped groove 6 on its upper part. An arc-shaped pad 7 is installed in one of the V-shaped grooves 6. The crankshaft assembly 8 is placed in one of the two V-shaped grooves 6. A transverse slide rail groove 9 and a longitudinal slide rail groove 10 are also provided on the base 1. The transverse slide rail groove 9 is parallel to the direction of the crankshaft assembly 8 placed in the V-shaped groove 6, and the longitudinal slide rail groove 10 is perpendicular to the direction of the crankshaft assembly 8 placed in the V-shaped groove 6. Figure 4 The straightening assembly 3 mainly includes a positioning platform 11, a pressure block 12, a slide rail I 13, and a slider I 14. The slide rail I 13 is installed in the longitudinal slide rail groove 10. The upper part of the positioning platform 11 is a mounting base 21. A bushing I 47 is inserted into the mounting hole 48 of the mounting base 21, and a tightening shaft 15 is installed in the bushing I 47. The bottom of the positioning platform 11 is installed on the slider I 14. In this embodiment, the bottom of the positioning platform 11 is installed on the slider I 14 by the cooperation of bolts and screw holes. The sliding groove at the bottom of the slider I 14 is located on the slide rail I 13, and the slider I 14 moves on the slide rail I 13. A vertical pressure block 12 is provided at one end of the slide rail I 13. The pressure block 12 is installed on the side of the base 1. When the slider I 14 drives the positioning platform 11 to slide into position on the slide rail I 13, the pressure block 12 locks the position of the positioning platform 11 by the locking member I.

[0019] exist Figure 3The measuring component 4 mainly includes a vertical support base 16, a side slider 17, a side slide rail 18, a bottom slider 19, a bottom slide rail 20, and a measuring instrument assembly. A fixing block 23 is fixedly installed on the upper part of the support base 16. In this embodiment, the upper part of the support base 16 is fixedly connected to the fixing block 23 by bolts and screw holes. A bottom slider 19 is provided at the bottom of the support base 16. In this embodiment, the bottom of the support base 16 is fixedly connected to the bottom slider 19 by bolts and screw holes. The bottom slide rail 20 is installed in the horizontal slide rail groove 9. The groove on the bottom surface of the bottom slider 19 is located on the bottom slide rail 20, and the bottom slider 19 moves on the bottom slide rail 20. A side slide rail groove 24 is provided on the side of the support base 16 opposite to the support platform 2. The side slide rail 18 is installed... The side slider 17 is installed in the side slide rail groove 24. One surface of the side slider 17 is provided with a slide groove, which is located on the side slide rail 18, and the side slider 17 moves on the side slide rail 18. The other surface of the side slider 17 is equipped with a mounting base 25. In this embodiment, the other surface of the side slider 17 is fixedly connected to the mounting base 25 by the cooperation of bolts and screw holes. A measuring instrument assembly is installed on the mounting base 25. The measuring instrument assembly is opposite to the crankshaft assembly 8 placed on the V-groove 6. When the side slider 17 drives the mounting base 25 to move into place on the side slide rail 18, the fixing block 23 locks the position of the mounting base 25 by the locking member II. The measuring instrument assembly in this embodiment mainly includes a needle block 26, a dial block 27, and a measuring shaft 28. The needle block 26 is provided with... The dial block 26 is a long, rectangular block. One end of the dial block 26 is a rounded end 27, and the other end is a square end. The square end of the dial block 26 is mounted on the mounting base 25. The rounded end 27 of the dial block 26 has a mounting hole 33 and a dial needle 29. The measuring shaft 28 is mounted on the dial block 27 through a measuring shaft hole 30 at the bottom of the dial block 27. A measuring head 31 is provided at one end of the measuring shaft 28. A spindle hole 32 is provided in the middle of the bottom rotating shaft 44 of the dial block 27. The dial block 27 is fixedly connected by a mounting shaft assembly passing through the spindle hole 32 and the mounting hole 33. The mounting shaft assembly in this embodiment mainly includes a shaft core II 34 and a bushing 35. The shaft core II 34 and the bushing 35 are connected by a threaded connection. The side of the bottom of the positioning table 11 in this embodiment has a threaded hole I. 36. A threaded hole II 37 is provided on the pressure block 12 at a position opposite to the threaded hole I 36. The locking component I is set as a locking bolt I 38. When the slider I 14 drives the positioning table 11 to slide into position on the slide rail I 13, the locking bolt I 38 passes through the threaded hole I 36 and the threaded hole II 37 from front to back to fix the position of the positioning table 11. The top of the assembly table base 25 in this embodiment is provided with a threaded hole III 39. A threaded hole IV 40 is provided on the fixing block 23 at a position corresponding to the assembly table base 25. The locking component II is set as a locking bolt II 41. When the side slider 17 drives the assembly table base 25 to move into position on the side slide rail 18, the locking bolt II 41 passes through the threaded hole IV 40 and the threaded hole III 39 from top to bottom to fix the position of the assembly table base 25.

[0020] exist Figure 5 The following describes the specific usage method of this eccentric shaft bore diameter position detection device. The steps are as follows:

[0021] S1. Place the crankshaft assembly 8 on the V-groove 6 of the V-support block 5 as required. Fit the small end 42 of the connecting rod onto the shaft core at the front end of the tightening shaft 15. Adjust the tightening shaft 15 to flatten the connecting rod. Then, fix the position of the positioning table 11 by passing the locking bolt I38 through the threaded hole I36 and the threaded hole II37 from front to back.

[0022] S2. Measure the height of the centerline of the journal 43 on the crankshaft assembly 8 placed on the V-shaped support block 5 using a height gauge, and then measure the height of the centerline of the dial block core II 34. Calculate the difference to obtain the distance difference. Then adjust the side slider 17 to ensure that the distance difference is consistent with the eccentricity of the crankshaft assembly 8, thereby ensuring that the bottom shaft 44 of the dial block 27 is concentric with the crank pin hole. The locking bolt II 41 passes through the threaded hole IV 40 and the threaded hole III 39 from top to bottom to fix the position of the mounting base 25. Then, use a coordinate measuring machine to recheck to ensure that the two values ​​are consistent. After all this is done, leave a mark on the support base 16 for future use.

[0023] S3. Adjust the pointer 29 so that it is aligned with the scale 46 on the dial block 27 at 0°. Then, insert the measuring head 31 into the crank pin hole 45 in the crankshaft assembly 8 and observe the value of the pointer 29 to quickly measure the angle of the crank pin hole 45.

[0024] Not limited to this, any variations or substitutions conceived without inventive effort should be included within the scope of protection of this invention. Therefore, the scope of protection of this invention should be determined by the scope defined in the claims.

Claims

1. A device for detecting the angle of crankpin holes in a motorcycle crankshaft assembly, characterized in that it It mainly includes a base (1), a support platform (2), a straightening assembly (3), and a measuring assembly (4). The straightening assembly (3) and the measuring assembly (4) are installed on the base (1) and located on both sides of the support platform (2). The support platform (2) is fixedly installed on the base (1). V-shaped support blocks (5) are symmetrically distributed on both sides of the support platform (2). Each V-shaped support block (5) has a V-shaped groove (6) on its upper part. An arc-shaped pad (7) is installed in one of the V-shaped grooves (6). The crankshaft assembly (8) is placed in the two V-shaped grooves (6). The base (1) is also provided with a transverse slide rail groove (9) and a longitudinal slide rail groove (10). The transverse slide rail groove (9) is parallel to the direction of the crankshaft assembly (8) placed in the V-shaped groove (6), and the longitudinal slide rail groove (10) is perpendicular to the direction of the crankshaft assembly (8) placed in the V-shaped groove (6). The straightening assembly (3) mainly includes a positioning table (11), a pressure block (12), a slide rail I (13), and a slider I (14). The slide rail I (13) is installed in the longitudinal slide rail groove (10). The upper part of the positioning table (11) is a mounting base (21). A bushing I (47) is inserted into the mounting hole (48) of the mounting base (21). A tightening shaft (15) is installed in the bushing I (47). The bottom of the positioning table (11) is installed on the slide rail. On block I (14), the groove at the bottom of slider I (14) is located on slide rail I (13) and slider I (14) moves on slide rail I (13). A vertical pressure block (12) is provided at one end of slide rail I (13). The pressure block (12) is installed on the side of base (1). When slider I (14) drives positioning table (11) to slide into position on slide rail I (13), the pressure block (12) locks the position of positioning table (11) through locking member I. The measuring component (4) mainly includes a vertical support base (16), a side slider (17), a side slide rail (18), a bottom slider (19), a bottom slide rail (20), and a measuring instrument assembly. A fixing block (23) is fixedly installed on the upper part of the support base (16). A bottom slider (19) is provided at the bottom of the support base (16). The bottom slide rail (20) is installed in the horizontal slide rail groove (9). The groove on the bottom surface of the bottom slider (19) is located on the bottom slide rail (20), and the bottom slider (19) moves on the bottom slide rail (20). A side slide rail groove (24) is provided on the side of the support base (16) opposite to the support platform (2). The slide rail (18) is installed in the side slide rail groove (24). One surface of the side slider (17) is provided with a groove. The groove of the side slider (17) is located on the side slide rail (18) and the side slider (17) moves on the side slide rail (18). The other surface of the side slider (17) is equipped with an assembly gauge base (25). A measuring gauge assembly is installed on the assembly gauge base (25). The measuring gauge assembly is opposite to the crankshaft assembly (8) placed on the V-groove (6). When the side slider (17) drives the assembly gauge base (25) to move into place on the side slide rail (18), the fixing block (23) locks the position of the assembly gauge base (25) through the locking member II.

2. The motorcycle crankshaft assembly crank pin hole angle detection device according to claim 1, characterized in that: The measuring instrument assembly mainly includes a needle block (26), a dial block (27), and a measuring shaft (28). The needle block (26) is a long strip-shaped block with one end rounded and the other end square. The square end of the needle block (26) is mounted on the mounting base (25). The rounded end of the needle block (26) is provided with a mounting hole (33) and a needle (29). The measuring shaft (28) is mounted on the dial block (27) through a measuring shaft hole (30) at the bottom of the dial block (27). A measuring head (31) is provided at one end of the measuring shaft (28). A shaft center hole (32) is provided in the middle of the bottom rotating shaft (44) of the dial block (27). The dial block (27) is fixedly connected by the mounting shaft assembly passing through the shaft center hole (32) and the mounting hole (33).

3. The motorcycle crankshaft assembly crank pin hole angle detection device according to claim 2, characterized in that: The mounting shaft assembly mainly includes a shaft core II (34) and a bushing (35), which are connected by a threaded connection.

4. The motorcycle crankshaft assembly crank pin hole angle detection device according to claim 2, characterized in that: The bottom side of the positioning platform (11) is provided with a threaded hole I (36), and the pressure block (12) is provided with a threaded hole II (37) opposite to the threaded hole I (36). The locking component I is set as a locking bolt I (38). When the slider I (14) drives the positioning platform (11) to slide into place on the slide rail I (13), the locking bolt I (38) passes through the threaded hole I (36) and the threaded hole II (37) from front to back to fix the position of the positioning platform (11).

5. The motorcycle crankshaft assembly crank pin hole angle detection device according to claim 2, characterized in that: The top of the assembly base (25) is provided with a threaded hole Ⅲ (39), and the fixed block (23) is provided with a threaded hole Ⅳ (40) at the position corresponding to the assembly base (25). The locking component Ⅱ is set as a locking bolt Ⅱ (41). When the side slider (17) drives the assembly base (25) to move into place on the side slide rail (18), the locking bolt Ⅱ (41) passes through the threaded hole Ⅳ (40) and the threaded hole Ⅲ (39) from top to bottom to fix the position of the assembly base (25).

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