Horizontal press-fitting device for driving chain wheel of crankshaft cam chain of motorcycle

Abstract

The utility model discloses a motorcycle crankshaft cam chain drive sprocket horizontal press-fitting device which comprises a base, and a detachable oil cylinder assembly, a sprocket press-fitting end assembly and a workpiece positioning end assembly used for placing a motorcycle crankshaft are arranged on the base. The oil cylinder assembly, the chain wheel press-fitting end assembly and the workpiece positioning end assembly are linearly arranged. The horizontal press-fitting device for the cam chain driving chain wheel of the motorcycle crankshaft is easy to operate, parts are convenient to assemble and disassemble, the problems that when the chain wheel is pressed on the motorcycle crankshaft, pressing deviation occurs, and the angle of the chain wheel cannot be aligned are solved, the press-fitting effect of the chain wheel is guaranteed, the angle and press-fitting size precision is improved, and the product quality and press-fitting efficiency of the motorcycle crankshaft are improved.

Description

Technical Field

[0001] The utility model relates to a pressing device, and more specifically, to a horizontal pressing device for a cam chain drive sprocket of a motorcycle crankshaft. Background Art

[0002] Normally, a sprocket or a gear needs to be pressed onto a motorcycle crankshaft. Currently, an ordinary hydraulic press is used for pressing, that is, a positioning method of adding one tooth to the end face of the sprocket teeth is used for vertical pressing. However, there is a special sprocket at present, which is a cam chain drive sprocket composed of a sprocket and an oil pump sprocket combined together. Its sprocket gear is different from the oil pump gear and is offset. The ordinary pressing method cannot position the sprocket teeth and cannot guarantee the angle requirement and the sprocket height dimension requirement after pressing. Summary of the Utility Model

[0003] Based on this, it is necessary to provide a horizontal pressing device for a cam chain drive sprocket of a motorcycle crankshaft in view of the above technical problems.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A horizontal pressing device for a cam chain drive sprocket of a motorcycle crankshaft, characterized in that the horizontal pressing device for a cam chain drive sprocket of a motorcycle crankshaft comprises a base, and a detachable oil cylinder assembly, a sprocket pressing end assembly and a workpiece positioning end assembly for placing a motorcycle crankshaft are arranged on the base. The oil cylinder assembly, the sprocket pressing end assembly and the workpiece positioning end assembly are arranged in a linear arrangement.

[0006] The sprocket pressing end assembly comprises a long guide rail, a movable long guide rail seat is arranged above the long guide rail, a horizontally arranged detachable guide sleeve substrate is arranged above the long guide rail seat, a detachable guide sleeve and a pair of longitudinally arranged detachable short guide rail seats are arranged on the guide sleeve substrate. The setting direction of the guide sleeve is consistent with the extension direction of the long guide rail, and the oil cylinder assembly directly drives the guide sleeve.

[0007] A short guide rail is arranged on the short guide rail seat, a slidable sprocket positioning clamping seat is arranged on the short guide rail, a detachable sprocket positioning chuck is arranged on the sprocket positioning clamping seat, a columnar spring seat is arranged at the top of the sprocket positioning chuck, and a spring is arranged between the spring seats.

[0008] As a preferred embodiment of the utility model, a guide rail installation groove is arranged on the base, and the long guide rail is arranged in the guide rail installation groove.

[0009] As a preferred embodiment of the present utility model, the sprocket positioning chuck includes a plate-shaped sprocket positioning base, an outwardly extending chuck protrusion is provided at the edge of the sprocket positioning base, and a plurality of gear grooves are provided on the inner wall of the chuck protrusion.

[0010] As a preferred embodiment of the present utility model, the workpiece positioning end assembly includes a workpiece positioning base, a pair of inverted trapezoidal workpiece positioning grooves are provided on the workpiece positioning base, a pair of gaskets are provided at the bottom of the workpiece positioning grooves, a positioning pin is provided at the top of the workpiece positioning base, and a pair of sprocket height limiting adjustment bolts are provided on the side wall of the workpiece positioning base.

[0011] As a preferred embodiment of the present utility model, the oil cylinder assembly includes an oil cylinder and an oil cylinder backing plate, and an oil cylinder stop pin is provided between the oil cylinder and the oil cylinder backing plate.

[0012] Compared with the prior art, the present utility model has the following beneficial effects:

[0013] The present utility model provides a horizontal press-fitting device for a motorcycle crankshaft cam chain drive sprocket. The horizontal press-fitting device for a motorcycle crankshaft cam chain drive sprocket is simple to operate and convenient for loading and unloading parts. It solves the problems of press-fitting deviation of the motorcycle crankshaft press-fitting sprocket and misalignment of the sprocket angle, ensures the press-fitting effect of the sprocket, improves the angle and press-fitting dimension accuracy, and improves the product quality and press-fitting efficiency of the motorcycle crankshaft. Description of the Drawings

[0014] In order to more clearly illustrate the solutions in the present utility model, the following will briefly introduce the drawings required for use in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the horizontal press-fitting device for a motorcycle crankshaft cam chain drive sprocket of the present utility model;

[0016] Figure 2 It is Figure 1 a three-dimensional structural exploded schematic diagram of the horizontal press-fitting device for a motorcycle crankshaft cam chain drive sprocket in

[0017] Figure 3 It is Figure 2 a three-dimensional structural exploded schematic diagram of the oil cylinder assembly in

[0018] Figure 4 It is Figure 2 a three-dimensional structural exploded schematic diagram of the sprocket press-fitting end assembly in

[0019] Figure 5 is Figure 4 a three-dimensional structural schematic diagram of a sprocket positioning chuck of a sprocket press-fitting end assembly in

[0020] Figure 6 is Figure 2 a three-dimensional structural schematic diagram of a workpiece positioning end assembly in

[0021] Figure 7 is Figure 2 a three-dimensional structural schematic diagram of the workpiece positioning end assembly in , for another perspective;

[0022] Figure 8 is a schematic diagram of the use of the horizontal press-fitting device for a motorcycle crankshaft cam chain drive sprocket of the present utility model. At this time, the sprocket has not been installed;

[0023] Figure 9 is a schematic diagram of the use of the horizontal press-fitting device for a motorcycle crankshaft cam chain drive sprocket of the present utility model. At this time, the sprocket is being press-fitted;

[0024] Figure 10 is a schematic diagram of the use of the horizontal press-fitting device for a motorcycle crankshaft cam chain drive sprocket of the present utility model. At this time, the sprocket has been press-fitted;

[0025] The markings in the figure are explained as follows: 1. Guide sleeve; 10. Guide sleeve base plate; 2. Short guide rail seat; 3. Short guide rail; 4. Spring seat; 5. Spring; 6. Sprocket positioning chuck; 61. Sprocket positioning base; 62. Chuck protrusion; 63. Gear groove; 7. Sprocket positioning card seat; 8. Long guide rail; 9. Long guide rail seat; A. Base; A1. Guide rail installation groove; B. Oil cylinder assembly; C. Sprocket press-fitting end assembly; D. Workpiece positioning end assembly; D0. Workpiece positioning base; D1. Workpiece positioning groove; D2. Spacer; D3. Positioning pin; D4. Sprocket height limit adjusting bolt; B. Oil cylinder assembly; X. Oil cylinder; Y. Oil cylinder backing plate; Z. Oil cylinder stop pin. Detailed implementation manners

[0026] The following is a detailed description of the preferred embodiments of the present utility model with reference to the accompanying drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present utility model.

[0027] As Figure 1 and Figure 2 shown, the horizontal press-fitting device S for a motorcycle crankshaft cam chain drive sprocket includes a base A. A detachable oil cylinder assembly B, a sprocket press-fitting end assembly C, and a workpiece positioning end assembly D for placing a motorcycle crankshaft are provided on the base A. The oil cylinder assembly B, the sprocket press-fitting end assembly C, and the workpiece positioning end assembly D are linearly arranged.

[0028] In addition, a guide rail mounting groove A1 is provided on the base A.

[0029] As Figure 3 shown, the oil cylinder assembly B includes an oil cylinder X and an oil cylinder backing plate Y. An oil cylinder stop pin Z is provided between the oil cylinder X and the oil cylinder backing plate Y. The oil cylinder X is fixed to the oil cylinder backing plate Y by bolts, and the oil cylinder anti-return pin Z is placed in the corresponding groove between the oil cylinder backing plate Y and the oil cylinder X, so as to control the distance when the oil cylinder X starts to operate.

[0030] As Figure 4 shown, the sprocket press-fitting end assembly C includes a long guide rail 8. The long guide rail 8 is arranged in the guide rail mounting groove A1. A movable long guide rail seat 9 is provided above the long guide rail 8. A detachable horizontally arranged guide sleeve substrate 10 is provided above the long guide rail seat 9. A detachable guide sleeve 1 and a pair of longitudinally arranged detachable short guide rail seats 2 are provided on the guide sleeve substrate 10. The setting direction of the guide sleeve 1 is consistent with the extension direction of the long guide rail 8. The oil cylinder assembly B directly drives the guide sleeve 1.

[0031] A short guide rail 3 is provided on the short guide rail seat 2. A slidable sprocket positioning clamping seat 7 is provided on the short guide rail 3. A detachable sprocket positioning chuck 6 is provided on the sprocket positioning clamping seat 7. A columnar spring seat 4 is provided at the top of the sprocket positioning chuck 6. A spring 5 is provided between the spring seats 4.

[0032] As Figure 5 shown, the sprocket positioning chuck 6 includes a plate-shaped sprocket positioning base 61. An outwardly extending chuck protrusion 62 is provided at the edge of the sprocket positioning base 61. A plurality of gear grooves 63 are provided on the inner wall of the chuck protrusion 62.

[0033] As Figure 6 and Figure 7 shown, the workpiece positioning end assembly D includes a workpiece positioning base D0. A pair of inverted trapezoidal workpiece positioning grooves D1 are provided on the workpiece positioning base D0. A pair of gaskets D2 are provided at the bottom of the workpiece positioning grooves D1. A positioning pin D3 is provided at the top of the workpiece positioning base D0. A pair of sprocket height limit adjusting bolts D4 are provided on the side wall of the workpiece positioning base D0.

[0034] The working mode of the horizontal press-fitting device for the motorcycle crankshaft cam chain drive sprocket will be described below, including the steps:

[0035] Step S1: As Figure 8 shown, first loosen the spring 5, clamp the sprocket P into the sprocket positioning chuck 6, ensure that the teeth on the sprocket P are engaged with the gear grooves 63, then place the crankshaft connecting rod assembly Q on the workpiece positioning end assembly D, flatten the connecting rod of the crankshaft connecting rod assembly Q and sleeved it into the positioning pin D3, and tighten the positioning pin D3;

[0036] Step S2: Figure 9 As shown, the oil cylinder assembly B is started, and the guide sleeve 1 moves from left to right through the oil cylinder assembly B to press the sprocket. After the guide sleeve 1 hits the oil cylinder stop pin Z, it automatically stops and the sprocket press is completed;

[0037] Step S3: Figure 10 As shown, after the sprocket is pressed into place, the two sprocket positioning clamps 6 are spread apart by the teeth in the middle of the sprocket, the spring 5 automatically releases the sprocket P, and then the guide sleeve 1 turns back from right to left to complete the press fitting.

[0038] The motorcycle crankshaft cam chain drive sprocket horizontal press-fitting device is simple to operate and convenient for loading and unloading parts, solves the problems of biased pressing and misalignment of the sprocket angle when pressing the motorcycle crankshaft, ensures the sprocket pressing effect, improves the angle and pressing size accuracy, and improves the product quality and pressing efficiency of the motorcycle crankshaft.

[0039] Without limitation to this, any changes or substitutions that are not conceived through creative work should be included in the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope defined in the claims.

Claims

1. A horizontal press-fitting device for a motorcycle crankshaft cam chain drive sprocket, characterized in that: The motorcycle crankshaft cam chain drive sprocket horizontal press-fitting device (S) comprises a base (A), on which a detachable oil cylinder assembly (B), a sprocket press-fitting end assembly (C) and a workpiece positioning end assembly (D) for placing the motorcycle crankshaft are arranged, wherein the oil cylinder assembly (B), the sprocket press-fitting end assembly (C) and the workpiece positioning end assembly (D) are arranged linearly. The sprocket press-fit end assembly (C) comprises a long guide rail (8), a movable long guide rail seat (9) is provided above the long guide rail (8), a detachable horizontally arranged guide sleeve base plate (10) is provided above the long guide rail seat (9), a detachable guide sleeve (1) and a pair of longitudinally arranged detachable short guide rail seats (2) are provided on the guide sleeve base plate (10), the setting direction of the guide sleeve (1) is consistent with the extension direction of the long guide rail (8), and the cylinder assembly (B) directly drives the guide sleeve (1). The short guide rail seat (2) is provided with a short guide rail (3), the short guide rail (3) is provided with a slidable sprocket positioning clamp (7), the sprocket positioning clamp (7) is provided with a detachable sprocket positioning chuck (6), the top of the sprocket positioning chuck (6) is provided with a columnar spring seat (4), and a spring (5) is provided between the spring seats (4).

2. The motorcycle crankshaft cam chain drive sprocket horizontal press-fitting device according to claim 1, characterized in that: The base (A) is provided with a guide rail installation groove (A1), and the long guide rail (8) is arranged in the guide rail installation groove (A1).

3. The motorcycle crankshaft cam chain drive sprocket horizontal press-fitting device according to claim 1, characterized in that: The sprocket positioning chuck (6) comprises a plate-shaped sprocket positioning base (61), the edge of the sprocket positioning base (61) is provided with a chuck protrusion (62) extending outward, and the inner wall of the chuck protrusion (62) is provided with a plurality of gear grooves (63).

4. The motorcycle crankshaft cam chain drive sprocket horizontal press-fitting device according to claim 1, characterized in that: The workpiece positioning end assembly (D) comprises a workpiece positioning base (D0), the workpiece positioning base (D0) is provided with a pair of inverted trapezoidal workpiece positioning grooves (D1), the bottom of the workpiece positioning grooves (D1) is provided with a pair of gaskets (D2), the top of the workpiece positioning base (D0) is provided with a positioning pin (D3), and the side wall of the workpiece positioning base (D0) is provided with a pair of sprocket height limit adjustment bolts (D4).

5. The motorcycle crankshaft cam chain drive sprocket horizontal press-fitting device according to claim 1, characterized in that: The oil cylinder assembly (B) comprises an oil cylinder (X) and an oil cylinder pad (Y), and an oil cylinder thrust pin (Z) is arranged between the oil cylinder (X) and the oil cylinder pad (Y).

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