Fixture for universal joint machining lathe

Abstract

The clamp for the universal joint machining lathe comprises a bottom plate, a clamp shell is fixedly arranged on the upper surface of the bottom plate, an electric push rod is fixedly installed on the upper surface of the bottom plate and located in the clamp shell, and a first fixing groove and a second fixing groove are fixedly formed in the inner wall of the clamp shell. A first driving gear and two groups of first transmission toothed plates are rotationally arranged in the first fixing groove, a second driving gear and two groups of second transmission toothed plates are rotationally arranged in the second fixing groove, and a rotating motor is arranged at the upper part of the electric push rod; when the size of the universal joint is changed, the rotating motor drives the four sets of movable abutting rods to be away from or close to the universal joint, when the size of the universal joint is changed, the rotating motor drives the four sets of movable abutting rods to be away from the universal joint, then the rotating motor drives the four sets of movable abutting rods to be close to the universal joint, and the universal joint is tightly abutted and fixed, so that the adaptability of the clamp is greatly improved; and the top clamping plate downwards presses the universal joint, so that the fixing stability of the universal joint is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cross-axis processing machines, in particular to a clamp used for a cross-axis universal joint processing lathe. Background Art

[0002] The cross shaft is also called the cross bit, that is, the universal joint, and the English name is universal joint. It is a mechanical part that realizes variable angle power transmission. It is used in the position where the direction of the transmission axis needs to be changed. It is the "joint" component of the universal transmission device of the automobile drive system. The cross shaft rigid universal joint is an unequal speed universal joint widely used in automobiles, and the maximum intersection angle between two adjacent shafts is allowed to be 15°~20°. The cross shaft is one of the key parts of the cross shaft rigid universal joint. The processing of the cross shaft is usually divided into three steps: splitting, drilling the top hole, and turning the outer ring. It is difficult to fix the cross shaft during the processing process. Especially when processing the top clamp hole, if the two holes are not in the same straight line, the size of the hole will be different, which will affect the subsequent process, causing scrapping and safety accidents. In addition, the cross shaft universal joints are of different sizes. The traditional fixture can only fix the cross shafts of the same size. When the size of the cross shaft produced changes, the fixture can no longer be used, which greatly reduces the adaptability of the fixture; therefore, we need to propose a fixture for the lathe for processing the cross shaft universal joint. Utility Model Content

[0003] The purpose of the utility model is to provide a clamp for a cross-axis universal joint processing lathe, which drives the first driving gear and the second driving gear to rotate by rotating a rotating motor, thereby driving the first transmission gear plate and the second transmission gear plate to move, thereby driving four sets of moving abutment rods to move, thereby clamping cross shafts of different sizes to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fixture for a cross-axis universal joint processing lathe, comprising a base plate, a fixture shell is fixedly arranged on the upper surface of the base plate, an electric push rod is fixedly installed on the upper surface of the base plate and located inside the fixture shell, a first fixed groove and a second fixed groove are fixedly arranged on the inner wall of the fixture shell, a first driving gear and two groups of first transmission tooth plates are rotatably arranged inside the first fixed groove, a second driving gear and two groups of second transmission tooth plates are rotatably arranged inside the second fixed groove, a rotating motor is arranged on the upper part of the electric push rod, an output end of the rotating motor is connected to the first driving gear and the second driving gear, and a movable stop rod is arranged on the upper part of the first transmission tooth plate and the second transmission tooth plate.

[0005] Preferably, one end of the electric push rod is fixedly connected to a support plate, a rotating motor is fixedly mounted on the upper surface of the support plate, and an inner wall of the clamp housing is provided with upper and lower sliding grooves corresponding to the first fixed groove and the second fixed groove.

[0006] Preferably, the output end of the rotating motor is key-connected with a rotating shaft, the rotating shaft passes through the second driving gear and is fixedly connected to the first driving gear, and the second driving gear is fixedly connected to the rotating shaft.

[0007] Preferably, the two groups of first transmission tooth plates are symmetrically arranged on the inner side wall of the first fixing groove, the first driving gear is arranged on the corresponding surfaces of the two groups of first transmission tooth plates, and the outer teeth of the first driving gear are engaged with both groups of first transmission tooth plates.

[0008] Preferably, a fixed plate is fixedly mounted on one end of one group of the first transmission tooth plates, and another group of fixed plates is fixedly mounted on the other end of another group of the first transmission tooth plates.

[0009] Preferably, the two groups of second transmission tooth plates are symmetrically fitted on the inner side walls of the second fixed groove, the second driving gear is arranged on the corresponding surfaces of the two groups of second transmission tooth plates, and the outer teeth of the second driving gear are engaged with both groups of second transmission tooth plates, one end of one group of the second transmission tooth plates is fixedly installed with a fixed plate, and the other end of the other group of the second transmission tooth plates is fixedly installed with another group of fixed plates.

[0010] Preferably, a working top plate is fixedly installed on the top of the clamp shell, a universal joint is arranged on the upper surface of the working top plate, a top clamping plate is fixedly arranged on the top of the movable push rod, four groups of sliding grooves are opened through the position of the top clamping plate on the upper surface of the working top plate, the four groups of movable push rods are symmetrically arranged in a quadrilateral, and the movable push rods are all located in the outer recess of the universal joint.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model drives the first driving gear and the second driving gear to rotate by a rotating motor, thereby driving the first transmission tooth plate and the second transmission tooth plate to move, and then driving the four groups of moving push rods to move away from or close to the universal joint, and the electric push rod drives the moving push rod to move up and down. When the size of the universal joint changes, the four groups of moving push rods are driven away from the universal joint by the rotating motor, and then the new universal joint is placed on the upper surface of the working top plate, and then the four groups of moving push rods are driven by the rotating motor to approach the universal joint to tightly fix the universal joint, thereby greatly improving the adaptability of the clamp, and then the moving push rod is driven downward by the electric push rod to make the top clamping plate press down on the universal joint, thereby increasing the stability of the universal joint fixation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the mobile structure of the utility model;

[0016] Figure 4 It is an exploded diagram of the transmission structure of the utility model.

[0017] In the figure: 1, bottom plate; 2, electric push rod; 3, fixture housing; 4, working top plate; 5, moving rod; 6, universal joint; 7, top clamping plate; 8, sliding groove; 9, support plate; 10, rotating motor; 11, first fixed groove; 12, second fixed groove; 13, rotating shaft; 14, first driving gear; 15, first transmission gear plate; 16, second driving gear; 17, fixed plate; 18, second transmission gear plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] The utility model provides: a fixture for a cross-axis universal joint processing lathe, such as Figure 1-4 As shown, it includes a base plate 1, a fixture housing 3 is fixedly arranged on the upper surface of the base plate 1, an electric push rod 2 is fixedly installed on the upper surface of the base plate 1 and inside the fixture housing 3, a first fixed groove 11 and a second fixed groove 12 are fixedly arranged on the inner wall of the fixture housing 3, a first driving gear 14 and two groups of first transmission tooth plates 15 are rotatably arranged inside the first fixed groove 11, a second driving gear 16 and two groups of second transmission tooth plates 18 are rotatably arranged inside the second fixed groove 12, a rotating motor 10 is arranged on the upper part of the electric push rod 2, an output end of the rotating motor 10 is connected to the first driving gear 14 and the second driving gear 16, and a moving stop rod 5 is arranged on the upper part of the first transmission tooth plate 15 and the second transmission tooth plate 18.

[0020] Preferably, one end of the electric push rod 2 is fixedly connected to a support plate 9, and a rotating motor 10 is fixedly installed on the upper surface of the support plate 9. The inner wall of the clamp housing 3 is provided with upper and lower sliding grooves corresponding to the first fixed groove 11 and the second fixed groove 12. When the electric push rod 2 is extended and retracted up and down, it will drive the rotating motor 10 and the internal devices of the first fixed groove 11 and the second fixed groove 12 to move up and down, thereby driving the four groups of moving rods 5 to move up and down, and the first fixed groove 11 and the second fixed groove 12 do not contact each other, thereby avoiding scratches between the first fixed groove 11 and the second fixed groove 12 to cause damage to the equipment.

[0021] It is worth noting that a rotating shaft 13 is keyed to the output end of the rotating motor 10, the rotating shaft 13 passes through the second driving gear 16 and is fixedly connected to the first driving gear 14, and the second driving gear 16 is fixedly connected to the rotating shaft 13. When the rotating motor 10 rotates, the rotating shaft 13 is driven to rotate, and then the rotating shaft 13 drives the first driving gear 14 and the second driving gear 16 to rotate.

[0022] Furthermore, the two groups of first transmission tooth plates 15 are symmetrically arranged on the inner wall of the first fixed groove 11, the first driving gear 14 is arranged on the corresponding surfaces of the two groups of first transmission tooth plates 15, and the outer teeth of the first driving gear 14 are engaged with the two groups of first transmission tooth plates 15. When the first driving gear 14 rotates, the first driving gear 14 drives the two groups of first transmission tooth plates 15 to move in the opposite direction.

[0023] Furthermore, a fixed plate 17 is fixedly installed at one end of one group of first transmission tooth plates 15, and another fixed plate 17 is fixedly installed at the other end of another group of first transmission tooth plates 15. When the rotating motor 10 is started, the two groups of first transmission tooth plates 15 move in opposite directions. When the rotating motor 10 rotates clockwise, the first driving gear 14 rotates clockwise, thereby driving the two groups of moving rods 5 closer together. When the rotating motor 10 rotates counterclockwise, the first driving gear 14 rotates counterclockwise, thereby driving the two groups of moving rods 5 away from each other.

[0024] In addition, the two groups of second transmission tooth plates 18 are symmetrically fitted on the inner side walls of the second fixed groove 12, the second driving gear 16 is arranged on the corresponding surfaces of the two groups of second transmission tooth plates 18, and the outer teeth of the second driving gear 16 are engaged with the two groups of second transmission tooth plates 18, one end of one group of second transmission tooth plates 18 is fixedly installed with a fixed plate 17, and the other end of the other group of second transmission tooth plates 18 is fixedly installed with another group of fixed plates 17. When the rotating motor 10 rotates, the second driving gear 16 is driven to rotate at the same time. The rotation of the second driving gear 16 drives the two groups of second transmission tooth plates 18 to move in the opposite direction, thereby driving the two groups of moving stop rods 5 to move closer or farther away.

[0025] Specifically, a working top plate 4 is fixedly installed on the top of the clamp housing 3, a universal joint 6 is arranged on the upper surface of the working top plate 4, a top card plate 7 is fixedly arranged on the top of the moving push rod 5, four sets of sliding grooves 8 are opened through the upper surface of the working top plate 4 corresponding to the position of the top card plate 7, the four sets of moving push rods 5 are symmetrically arranged in a quadrilateral, and the moving push rods 5 are all located in the outer recess of the universal joint 6. When the larger universal joint 6 is replaced, the rotating motor 10 is started to rotate clockwise, driving the first driving gear 14 and the second driving gear 16 to rotate clockwise, thereby driving the four sets of moving push rods 5 to move away from the universal joint 6 along the sliding groove 8, and then the larger universal joint 6 is placed on the upper surface of the working top plate 4. When the universal joint 6 needs to be fixed Timing, start the rotating motor 10 to rotate counterclockwise, thereby driving the first driving gear 14 and the second driving gear 16 to rotate counterclockwise, and then drive the four sets of moving push rods 5 to approach the recess of the universal joint 6, and the four sets of moving push rods 5 are cylindrical, only need to place the universal joint 6 in the approximate position, the moving push rod 5 can rotate along the recess of the universal joint 6, and then drive the universal joint 6 to a fixed position, and then drive the support plate 9 to move downward through the electric push rod 2, thereby driving the top clamping plate 7 to move downward, so that the top clamping plate 7 is pressed against the upper surface of the universal joint 6, thereby enhancing the fixing stability of the universal joint 6, so as to improve the stability of the universal joint 6 during processing, and avoid displacement of the universal joint 6 during processing to cause the universal joint 6 to be scrapped.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixture for a lathe for machining a cross-axis universal joint, characterized in that: The invention comprises a base plate (1), a fixture housing (3) is fixedly arranged on the upper surface of the base plate (1), an electric push rod (2) is fixedly installed on the upper surface of the base plate (1) and located inside the fixture housing (3), a first fixed groove (11) and a second fixed groove (12) are slidably arranged on the inner wall of the fixture housing (3), a first driving gear (14) and two groups of first transmission tooth plates (15) are rotatably arranged inside the first fixed groove (11), a second driving gear (16) and two groups of second transmission tooth plates (18) are rotatably arranged inside the second fixed groove (12), a rotating motor (10) is arranged on the upper part of the electric push rod (2), an output end of the rotating motor (10) is connected to the first driving gear (14) and the second driving gear (16), and a moving stop rod (5) is arranged on the upper part of the first transmission tooth plate (15) and the second transmission tooth plate (18).

2. The fixture for a cross-axis universal joint processing lathe according to claim 1, characterized in that: One end of the electric push rod (2) is fixedly connected to a support plate (9), a rotating motor (10) is fixedly mounted on the upper surface of the support plate (9), and an inner wall of the clamp housing (3) is provided with upper and lower sliding grooves corresponding to the first fixed groove (11) and the second fixed groove (12).

3. The fixture for a cross-axis universal joint machining lathe according to claim 1, characterized in that: The output end of the rotating motor (10) is key-connected with a rotating shaft (13), the rotating shaft (13) passes through the second driving gear (16) and is fixedly connected to the first driving gear (14), and the second driving gear (16) is fixedly connected to the rotating shaft (13).

4. The fixture for a cross-axis universal joint machining lathe according to claim 1, characterized in that: The two groups of first transmission tooth plates (15) are symmetrically arranged on the inner side wall of the first fixing groove (11), the first driving gear (14) is arranged on the corresponding surfaces of the two groups of first transmission tooth plates (15), and the outer teeth of the first driving gear (14) are meshed with the two groups of first transmission tooth plates (15).

5. The fixture for a cross-axis universal joint machining lathe according to claim 4, characterized in that: A fixing plate (17) is fixedly mounted on one end of one set of the first transmission tooth plates (15), and another set of fixing plates (17) is fixedly mounted on the other end of the other set of the first transmission tooth plates (15).

6. The fixture for a cross-axis universal joint machining lathe according to claim 5, characterized in that: The two groups of second transmission tooth plates (18) are symmetrically fitted on the inner side walls of the second fixed groove (12); the second driving gear (16) is arranged on the corresponding surfaces of the two groups of second transmission tooth plates (18); and the outer teeth of the second driving gear (16) are engaged with both groups of second transmission tooth plates (18); one end of one group of the second transmission tooth plates (18) is fixedly mounted with a fixing plate (17); and the other end of the other group of the second transmission tooth plates (18) is fixedly mounted with another group of fixing plates (17).

7. The fixture for a cross-axis universal joint machining lathe according to claim 6, characterized in that: A working top plate (4) is fixedly mounted on the top of the clamp housing (3), a universal joint (6) is arranged on the upper surface of the working top plate (4), a top clamping plate (7) is fixedly arranged on the top of each of the movable push rods (5), four groups of sliding grooves (8) are provided through the upper surface of the working top plate (4) at positions corresponding to the top clamping plate (7), the four groups of movable push rods (5) are symmetrically arranged in a quadrilateral, and the movable push rods (5) are all located in a recessed position outside the universal joint (6).

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