Clamp for boring spline shaft yoke of transmission shaft

Abstract

A mounting block, a fixing groove and a mounting plate are sequentially arranged on the upper surface of a fixing base, a connecting block is transversely and rotatably arranged at the center of the mounting block in a penetrating mode, the mounting groove is formed in the center of the inner side face of the connecting block, and an inner spline is arranged on the inner wall of the mounting groove. The inner side of the mounting plate is connected with a pressing block through a transversely-arranged electric push rod a, and the center of the pressing block and the center of the connecting block are located on the same horizontal plane. An electric push rod b is vertically arranged in the fixing groove, the lower end of the electric push rod b is fixedly connected with the groove bottom face of the fixing groove, the upper end of the electric push rod b protrudes out of the fixing groove to be located above the fixing base and is concentrically and fixedly connected with a limiting shaft matched with the spline shaft fork lug hole structure, and the limiting shaft is located under the spline shaft fork lug hole. The control box is fixedly arranged on the outer side of the mounting plate; the clamping device has the advantages of being accurate and stable in clamping and convenient and fast to operate and use.

Description

Technical Field

[0001] The utility model belongs to the technical field of transmission shaft processing, and in particular relates to a clamp for processing a spline shaft fork boring hole of a transmission shaft. Background Art

[0002] The spline shaft fork is an important component on the non-constant speed transmission shaft. It is composed of a spline shaft and a shaft fork that are concentrically fixed and welded. When the spline shaft fork is processed, in order to ensure its subsequent actual use effect, the ear holes of the shaft fork need to be bored to facilitate the subsequent matching connection between it and the pin shaft. When boring the ear holes, in order to ensure the accuracy of the boring processing, the spline shaft fork needs to be fixed as a whole by a clamp. However, when the existing clamp is used, its clamping stability is poor, and the clamping process is labor-intensive and time-consuming, which affects the production and processing efficiency of the spline shaft fork. Therefore, in order to solve the above problems, it is necessary to develop a clamp for boring the spline shaft fork of the transmission shaft, which has accurate and stable clamping and is easy to operate and use. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and to provide a clamp for boring holes of a transmission shaft spline shaft fork which has the advantages of accurate and stable clamping and convenient operation and use.

[0004] The purpose of the utility model is achieved as follows: a fixture for boring holes of a transmission shaft spline shaft fork, comprising a fixed base and a control box, a mounting block is fixedly arranged at the right end of the upper surface of the fixed base, a mounting plate is vertically fixedly arranged at the left end of the upper surface, a fixing groove is arranged in the middle of the upper surface, a through hole is horizontally arranged at the center of the side surface of the mounting block, a connecting block is rotatably penetrated in the through hole, a mounting groove is arranged at the center of the inner side surface of the connecting block along its length direction, an inner wall of the mounting groove is provided with an inner spline that matches the outer spline structure of the spline shaft fork surface, an electric push rod a is arranged at the upper end of the inner side surface of the mounting plate, and the electric push rod a is arranged horizontally as a whole, one end of which is fixedly connected to the mounting plate, and the other end is fixedly connected to a pressure block through an intermediate connecting plate, and the center of the pressure block and the center of the connecting block are located in the same horizontal plane; the fixing groove is a circular groove structure as a whole, and an electric push rod b is vertically arranged inside it, the lower end of the electric push rod b is fixedly connected to the groove bottom surface of the fixing groove, and the upper end protrudes from the fixing groove and is located above the fixed base, and is concentrically fixedly connected with a limit shaft that matches the spline shaft fork ear hole structure, and the limit shaft is located directly below the spline shaft fork ear hole; the control box is fixedly arranged on the outside of the mounting plate, and the electric push rods a and the electric push rods b are electrically connected to the control box through wires.

[0005] The pressing block is a conical structure as a whole, and its diameter gradually decreases from one end fixedly connected to the middle connecting plate to the outside.

[0006] The upper end of the limiting shaft is in a truncated cone shape, and its diameter gradually increases from top to bottom.

[0007] A reinforcement block is fixedly arranged at the connection between the lower end of the inner side surface of the mounting plate and the upper surface of the fixed base.

[0008] An auxiliary rotating rod is vertically fixedly arranged on the outer side of the connecting block.

[0009] Beneficial effects of the utility model: the utility model provides a mounting block, a through hole, a connecting block and a mounting groove, and utilizes the cooperation between the inner spline on the inner surface of the mounting groove and the outer spline on the surface of the spline shaft fork, so that the spline shaft fork can be placed horizontally while being limitedly plugged in between the spline shaft fork and the mounting groove; at the same time, utilizing the rotational connection between the connecting block and the through hole, when in use, the connecting block can be rotated, thereby driving the spline shaft fork limitedly plugged in the mounting groove to rotate through the rotation of the connecting block, so as to adjust the angle of the spline shaft fork, so that the ear hole at the lower end of the shaft fork is located directly above the limit axis;

[0010] By setting the electric push rod b and the limit shaft, the limit shaft can be driven to move in the vertical direction by utilizing the telescopic property of the electric push rod b, so that the limit shaft can be used to realize the matching connection with the ear hole at the lower end of the shaft fork portion of the spline shaft fork by utilizing the movement of the limit shaft. With this structure, the ear hole can be kept vertically arranged as a whole, and the limit shaft can be used to limit the position of the spline shaft fork as a whole, thereby avoiding the problem that the subsequent boring processing of the ear hole at the upper end of the shaft fork portion is affected by the rotation of the spline shaft fork as a whole with the connecting block;

[0011] By setting up a mounting plate, an electric push rod a and a pressure block, and utilizing the telescopicity of the electric push rod a, the pressure block can be driven to move horizontally through the intermediate connecting plate, and then the extrusion limit of the spline shaft fork is achieved through the movement of the pressure block. By adopting this structure, the clamping stability of the spline shaft fork can be increased in conjunction with the limiting shaft; in general, the utility model has the advantages of precise and stable clamping and convenient operation and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front view of the utility model.

[0013] Figure 2 It is a sectional view of the front view of the utility model.

[0014] In the figure: 1. fixed base; 11. fixed groove; 12. electric push rod b; 13. limit shaft; 2. control box; 3. mounting block; 31. through hole; 32. connecting block; 33. mounting groove; 34. auxiliary rotating rod; 4. mounting plate; 41. electric push rod a; 42. pressure block; 43. reinforcement block. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings.

[0016] Example: Figure 1 , Figure 2 As shown, a fixture for boring holes of a transmission shaft spline shaft fork comprises a fixed base 1 and a control box 2, a mounting block 3 is fixedly arranged at the right end of the upper surface of the fixed base 1, a mounting plate 4 is vertically fixedly arranged at the left end of the upper surface, a fixing groove 11 is arranged in the middle of the upper surface, a through hole 31 is horizontally arranged at the center of the side surface of the mounting block 3, a connecting block 32 is horizontally rotated through the through hole 31, a mounting groove 33 is arranged at the center of the inner side surface of the connecting block 32 along its length direction, an inner wall of the mounting groove 33 is arranged with an inner spline that matches the outer spline structure of the spline shaft fork surface, an electric push rod a41 is arranged at the upper end of the inner side surface of the mounting plate 4, and the electric push rod a41 is arranged horizontally as a whole. , one end of which is fixedly connected to the mounting plate 4, and the other end is fixedly connected to a pressure block 42 through an intermediate connecting plate, and the center of the pressure block 42 is located in the same horizontal plane as the center of the connecting block 32; the fixing groove 11 is a circular groove structure as a whole, and an electric push rod b12 is vertically arranged inside it, the lower end of the electric push rod b12 is fixedly connected to the bottom surface of the fixing groove 11, and the upper end protrudes from the fixing groove 11 and is located above the fixed base 1, and is concentrically fixedly connected with a limit shaft 13 that matches the spline shaft fork ear hole structure, and the limit shaft 13 is located directly below the spline shaft fork ear hole; the control box 2 is fixedly arranged on the outside of the mounting plate 4, and the electric push rod a41 and the electric push rod b12 are both electrically connected to the control box 2 through wires.

[0017] The pressing block 42 is a conical structure as a whole, and its diameter gradually decreases from the end fixedly connected to the middle connecting plate to the outside; the upper end of the limiting shaft 13 is truncated cone-shaped, and its diameter gradually increases from top to bottom. The limiting shaft 13 with this structure can increase the smoothness of the fitting and sleeve connection between the limiting shaft 13 and the ear hole of the spline shaft fork when the limiting shaft 13 moves under the action of the electric push rod b12; a reinforcement block 43 is fixedly provided at the connection between the lower end of the inner side surface of the mounting plate 4 and the upper surface of the fixed base 1, and the reinforcement block 43 can be used to increase the stability of the connection between the mounting plate 4 and the fixed base 1; an auxiliary rotating rod 34 is vertically fixedly provided on the outer side of the connecting block 32, and the auxiliary rotating rod 34 can be used to increase the convenience of the rotation operation of the connecting block 32.

[0018] When the utility model is in use, first, the internal spline on the inner surface of the mounting groove 33 is used to cooperate with the external spline on the surface of the spline shaft fork, so that the spline shaft fork is horizontally slid and placed in the mounting groove 33, and the spline shaft fork is limitedly plugged in between the spline shaft fork and the mounting groove 33, and the horizontal and horizontal placement of the spline shaft fork is completed; then, the rotation connection between the connecting block 32 and the through hole 31 is used to rotate the connecting block 32 by external force. At this time, the rotation of the connecting block 32 can drive the spline shaft fork limitedly plugged in the mounting groove 33 to rotate, thereby realizing the adjustment of the angle of the spline shaft fork, so that the ear hole at the lower end of the shaft fork is located directly above the limit shaft 13; then, the control box 2 is used to control the electric push rod b12 to expand, and the thrust effect of the electric push rod b12 on the limit shaft 13 when it is expanded can drive the limit shaft 13 to move in the vertical direction, and then the movement of the limit shaft 13 is used to realize It is fitted and sleeved with the ear hole at the lower end of the shaft fork portion of the spline shaft fork. With this structure, the ear hole can be kept vertically arranged as a whole, and the limit shaft 13 can be used to limit the spline shaft fork as a whole, thereby avoiding the problem that the rotation of the spline shaft fork as a whole with the connecting block 32 affects the subsequent boring processing of the ear hole at the upper end of the shaft fork portion; finally, the control box 2 is used to control the electric push rod a41 to unfold, and the electric push rod a41 exerts a thrust force on the middle connecting plate outward when unfolding, which can drive the middle connecting plate and the pressure block 42 to move horizontally, and then through the movement of the pressure block 42, the contact with the spline shaft fork is achieved, and the extrusion limitation of the spline shaft fork is completed. After completing the above operations, the boring operation of the ear hole at the upper end of the shaft fork portion of the spline shaft fork can be completed by moving the boring equipment in the vertical direction; in general, the utility model has the advantages of precise and stable clamping and convenient operation and use.

[0019] The above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not depart from the spirit and scope of the utility model should be included in the scope of the claims of the utility model.

Claims

1. A fixture for boring a spline shaft of a transmission shaft, comprising a fixed base (1) and a control box (2), characterized in that: A mounting block (3) is fixedly provided at the right end of the upper surface of the fixed base (1), a mounting plate (4) is vertically fixedly provided at the left end of the upper surface, a fixing groove (11) is provided in the middle of the upper surface, a through hole (31) is transversely provided at the center of the side surface of the mounting block (3), a connecting block (32) is transversely rotatably penetrated in the through hole (31), a mounting groove (33) is provided at the center of the inner side surface of the connecting block (32) along its length direction, an inner wall of the mounting groove (33) is provided with an internal spline that matches the external spline structure on the surface of the spline shaft fork, an electric push rod a (41) is provided at the upper end of the inner side surface of the mounting plate (4), the electric push rod a (41) is arranged transversely as a whole, one end of which is fixedly connected to the mounting plate (4), and the other end of which is fixedly connected to the mounting plate (4). A pressure block (42) is fixedly connected via an intermediate connecting plate, and the center of the pressure block (42) and the center of the connecting block (32) are located in the same horizontal plane; the fixing groove (11) is a circular groove structure as a whole, and an electric push rod b (12) is vertically arranged inside the fixing groove (11); the lower end of the electric push rod b (12) is fixedly connected to the groove bottom surface of the fixing groove (11), and the upper end protrudes from the fixing groove (11) and is located above the fixing base (1), and is coaxially fixedly connected to a limit shaft (13) that matches the spline shaft fork ear hole structure, and the limit shaft (13) is located directly below the spline shaft fork ear hole; the control box (2) is fixedly arranged on the outside of the mounting plate (4), and the electric push rod a (41) and the electric push rod b (12) are both electrically connected to the control box (2) via wires.

2. A fixture for boring a transmission shaft spline shaft fork according to claim 1, characterized in that: The pressing block (42) is of a conical structure as a whole, and its diameter gradually decreases from the end fixedly connected to the middle connecting plate toward the outside.

3. A fixture for boring a transmission shaft spline shaft fork according to claim 1, characterized in that: The upper end of the limiting shaft (13) is in the shape of a truncated cone, and its diameter gradually increases from top to bottom.

4. A fixture for boring a transmission shaft spline shaft fork according to claim 1, characterized in that: A reinforcement block (43) is fixedly provided at the connection between the lower end of the inner side surface of the mounting plate (4) and the upper surface of the fixed base (1).

5. A fixture for boring a transmission shaft spline shaft fork as claimed in claim 1, characterized in that: An auxiliary rotating rod (34) is vertically fixedly arranged on the outer side of the connecting block (32).

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