Workpiece positioning device for gear hobbing machine

Abstract

The utility model belongs to the field of gear hobbing machines, and particularly relates to a workpiece positioning device for a gear hobbing machine. A first fixing groove is formed in the middle of the workbench. A first motor is fixedly connected to the middle of the workbench. The output end of the first motor is fixedly connected with a first threaded rod; the middle of the first threaded rod is in threaded connection with a sliding block. The middle part of the sliding block is rotationally connected with a first rotating rod; a sliding rod is arranged in the middle of the first rotating rod; a plurality of connecting rods are hinged to the middle of the sliding rod. A top plate is hinged to the end part of the connecting rod; a plurality of second fixing grooves are formed in the middle of the first rotating rod; a conveying belt is arranged between the first threaded rod and the first rotating rod in a sleeving manner; the positions of all the top plates can be adjusted by sliding the sliding rods so as to adapt to workpieces of various sizes, the variety range of the workpieces clamped by the device is widened, and the adaptability and flexibility of the device for fixing the workpieces of different varieties and different sizes are improved.

Description

Technical Field

[0001] The utility model relates to the field of gear hobbing machines, in particular to a workpiece positioning device for gear hobbing machines. Background Art

[0002] Gear hobbing machine is the most widely used type of gear processing machine tool. It is mainly used to process various cylindrical gears, worm gears and other toothed workpieces. Gear hobbing machine uses hobs to process spur, helical and herringbone cylindrical gears and worm gears according to the development method. When using special hobs, gear hobbing machine can also process workpieces with various special tooth shapes such as splines and sprockets.

[0003] The workpieces processed by gear hobbing machines mainly include cylindrical gears, worm wheels, sprockets, spline shafts, etc. Cylindrical gears are the most common processing objects of gear hobbing machines, including spur gears, helical gears and herringbone gears. Worm wheels are another common processing workpiece, and gear hobbing machines can efficiently process the tooth shape of worm wheels through special hobs. Sprockets are workpieces with special tooth shapes, and gear hobbing machines can also perform their processing tasks.

[0004] The existing gear hobbing machine needs to use a positioning device to position the workpiece when processing the workpiece. It is found in use observation that the positioning device needs to be replaced when processing workpieces of different sizes, which makes the processing steps of the gear hobbing machine more cumbersome and increases the time required for workpiece processing.

[0005] Therefore, in view of the above problems, a workpiece positioning device for a gear hobbing machine is proposed. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the utility model to solve its technical problems is as follows: a workpiece positioning device for a gear hobbing machine described in the utility model comprises a workbench; a first fixing groove is provided in the middle of the workbench; a first motor is fixedly connected to the middle of the workbench; a first threaded rod is fixedly connected to the output end of the first motor; a slider is threadedly connected to the middle of the first threaded rod; a first rotating rod is rotatably connected to the middle of the slider; a sliding rod is provided in the middle of the first rotating rod; a plurality of connecting rods are hinged to the middle of the sliding rod; a top plate is hinged to the end of the connecting rod; a plurality of second fixing grooves are provided in the middle of the first rotating rod; the top plate and the second fixing groove are slidably matched; the end of the top plate is arranged in an arc shape; a plurality of rotating wheels are rotatably connected to the middle of the top plate; a gear hobbing machine body is fixedly connected to the top of the workbench; a transmission belt is sleeved between the first threaded rod and the first rotating rod; the sliding slide rod can adjust the positions of all top plates to adapt to workpieces of various sizes, increase the range of types of workpieces clamped by the device, and improve the adaptability and flexibility of the device in fixing workpieces of different types and sizes.

[0008] Preferably, a plurality of first springs are symmetrically fixed to the middle of the top plate; the ends of adjacent first springs are fixed to a vertical plate; a third fixed groove is opened in the middle of the vertical plate; a roller is rotatably connected to the middle of the third fixed groove; through the cooperation of the vertical plate and the first spring, the vertical plate will squeeze the inner wall of the workpiece under the elastic force of the first spring, play a role in correcting the deviation of the workpiece during movement, so that the workpiece will always move along the axial direction of the first rotating rod during movement.

[0009] Preferably, a plurality of bristles are fixedly connected to the middle portion of the roller; the bristles are arranged in an array; when the workpiece contacts the roller, the workpiece also contacts the bristles, and when the bristles contact the inner wall of the workpiece, the inner wall of the workpiece is cleaned, thereby reducing impurities attached to the inner wall of the workpiece and improving the cleanliness of the inner wall of the workpiece.

[0010] Preferably, the middle part of the top plate is symmetrically rotatably connected to a second rotating rod; the end of the second rotating rod is fixedly connected to a second spring; the second spring and the top plate are both in a fixed relationship; the end of the second rotating rod is fixedly connected to a cross plate; when the workpiece moves along the top plate, it will contact and squeeze the second rotating rod, and the second rotating rod will rotate along the top plate under the action of pressure, and the rotation of the second rotating rod will drive the cross plate to rotate together, and the rotation of the second rotating rod will cause the length of the second spring to change, and the cross plate will contact the inner wall of the workpiece when the cross plate rotates, thereby increasing the contact area between the device and the inner wall of the workpiece and enhancing the stability of the device in fixing the workpiece.

[0011] Preferably, a rubber pad is fixed to the top of the transverse plate; the surface of the rubber pad is an arc-shaped structure; when the transverse plate contacts the workpiece, the rubber pad will also contact the workpiece, because the friction coefficient of the rubber pad surface is larger, the friction between the device and the workpiece will be increased, further enhancing the stability of the workpiece during processing.

[0012] Preferably, a plurality of air holes are provided in the middle of the first rotating rod; the air holes are arranged in a circular array; when the device is working, air flow will pass through the air holes and enter the interior of the first rotating rod, and the air flow will take away the heat on the surface of the electric push rod, thereby reducing the surface temperature of the electric push rod and accelerating the cooling speed of the surface of the electric push rod.

[0013] Preferably, a plurality of suction cups are fixedly connected to the top of the top plate; a water bag is fixedly connected to the top of the top plate; the water bag is located inside the suction cup; when the workpiece moves along the top plate, it will come into contact with and squeeze the suction cup, the suction cup will have an adsorption effect on the inner wall of the workpiece, and the workpiece will also squeeze the water bag, so that the water in the water bag will flow out from the circular hole, the water will flow to the inner wall of the workpiece and reduce the gap between the suction cup and the workpiece, thereby enhancing the adsorption effect of the suction cup on the workpiece.

[0014] The utility model is beneficial in that:

[0015] 1. The utility model discloses a workpiece positioning device for a gear hobbing machine. The sliding rod can adjust the positions of all top plates to accommodate workpieces of various sizes, thereby increasing the range of types of workpieces that can be clamped by the device and improving the adaptability and flexibility of the device in fixing workpieces of different types and sizes.

[0016] 2. The utility model describes a workpiece positioning device for a gear hobbing machine. Through the cooperation of a vertical plate and a first spring, the vertical plate will squeeze the inner wall of the workpiece under the elastic force of the first spring, thereby correcting the deviation of the workpiece during movement, so that the workpiece will always move along the axial direction of the first rotating rod during movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model 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 some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the main body of the utility model;

[0019] Figure 2 This is a structural schematic diagram of the slider in the utility model;

[0020] Figure 3 It is a structural schematic diagram of the top plate in the utility model;

[0021] Figure 4 It is a structural schematic diagram of the second rotating rod in the utility model.

[0022] In the figure: 1. workbench; 102. first fixed groove; 103. first motor; 104. first threaded rod; 105. slider; 106. first rotating rod; 107. slide rod; 108. top plate; 109. rotating wheel; 110. connecting rod; 111. second fixed groove; 112. gear hobbing machine body; 113. second motor; 114. electric push rod; 2. first spring; 22. vertical plate; 23. roller; 24. third fixed groove; 3. brush; 4. second rotating rod; 42. second spring; 43. horizontal plate; 5. rubber pad; 6. air vent; 7. suction cup; 72. water bag. DETAILED DESCRIPTION

[0023] 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.

[0024] Specific examples are given below.

[0025] See also Figures 1 to 3As shown, a workpiece positioning device for a gear hobbing machine described in an embodiment of the utility model comprises a workbench 1; a first fixing groove 102 is opened in the middle of the workbench 1; a first motor 103 is fixedly connected to the middle of the workbench 1; a first threaded rod 104 is fixedly connected to the output end of the first motor 103; a slider 105 is threadedly connected to the middle of the first threaded rod 104; a second motor 113 is fixedly connected to the middle of the slider 105; a first rotating rod 106 is fixedly connected to the output end of the second motor 113; the first rotating rod 106 and the slider 105 are arranged through and are rotatably connected; an electric push rod 114 is fixedly connected to the middle of the slider 105; the electric push rod 114 is located inside the first rotating rod 106. ; The output end of the electric push rod 114 is fixedly connected to a slide rod 107; a plurality of connecting rods 110 are hingedly connected to the middle of the slide rod 107; a top plate 108 is hingedly connected to the end of the connecting rod 110; a plurality of second fixing grooves 111 are provided in the middle of the first rotating rod 106; the top plate 108 and the second fixing groove 111 are slidably matched; the end of the top plate 108 is arranged in an arc shape; a plurality of rotating wheels 109 are rotatably connected to the middle of the top plate 108; a gear hobbing machine body 112 is fixedly connected to the top of the workbench 1; a second conveyor motor 113 is provided between the first threaded rod 104 and the first rotating rod 106; when working, the workpiece is set in the middle of the first rotating rod 106, and the workpiece will first be in contact with the top plate 108 When the workpiece contacts the top plate 108, the workpiece will slide along the arc-shaped end of the top plate 108 and contact the rotating wheel 109. When the rotating wheel 109 contacts the workpiece, it will rotate under the action of friction. After the workpiece passes through the arc-shaped section of the top plate 108, it will reach the top of the top plate 108. Then the staff can start the electric push rod 114 to drive the sliding rod 107 to move along the first rotating rod 106. When the sliding rod 107 moves, it will drive all the connecting rods 110 to move together and change the angle of the connecting rod 110. When the connecting rod 110 moves, it will also drive the top plate 108 to move together and make the top plate 108 move along the second fixed groove 111. When the top plate 108 moves, it will approach the inner wall of the workpiece until all the top plates 108 are in contact with the inner wall of the workpiece. At this time, the device completes the fixation of the workpiece, and then starts the device. After the device is started, the first motor 103, the gear hobbing machine body 112 and the second motor 113 are started. After the first motor 103 is started, the first threaded rod 104 is rotated. When the first threaded rod 104 rotates, the slider 105 moves along the first threaded rod 104. At the same time, after the second motor 113 is started, the first rotating rod 106 is rotated. When the slider 105 moves, it drives the first rotating rod 106 to move together. The first rotating rod 106 drives the top plate 108 to move together, and the top plate 108 drives the workpiece to move together and approach the gear hobbing machine body 112. When the workpiece contacts the gear hobbing machine body 112, it will be processed by the gear hobbing machine body 112.When the slide bar 107 moves, the positions of all the top plates 108 can be adjusted to accommodate workpieces of various sizes, thereby increasing the range of types of workpieces that can be clamped by the device and improving the adaptability and flexibility of the device in fixing workpieces of different types and sizes. ;

[0026] See also Figure 3 and Figure 4 As shown, a plurality of first springs 2 are symmetrically fixed to the middle of the top plate 108; the ends of the adjacent first springs 2 are fixed to a vertical plate 22; a third fixed groove 24 is provided in the middle of the vertical plate 22; a roller 23 is rotatably connected to the middle of the third fixed groove 24; when the workpiece moves along the top plate 108, the inner wall of the workpiece will come into contact with the vertical plate 22 and squeeze the vertical plate 22, and the vertical plate 22 will transmit the pressure to the first spring 2 to make the first spring 2 in a compressed state, and the first spring 2 will release the elastic potential energy and squeeze the inner wall of the workpiece, which plays a role in correcting the deviation of the workpiece during movement, and the workpiece will also come into contact with the roller 23 and make the roller 23 rotate under the action of friction, and the roller 23 will reduce the jamming of the workpiece during movement; through the cooperation of the vertical plate 22 and the first spring 2, the vertical plate 22 will squeeze the inner wall of the workpiece under the elastic force of the first spring 2, which plays a role in correcting the deviation of the workpiece during movement, so that the workpiece will always move along the axial direction of the first rotating rod 106 during movement.

[0027] See also Figure 4 As shown, a plurality of bristles 3 are fixedly connected to the middle of the roller 23; the bristles 3 are arranged in an array; when the workpiece contacts the roller 23, the workpiece will also contact the bristles 3, and when the bristles 3 contact the inner wall of the workpiece, the inner wall of the workpiece will be cleaned, thereby reducing impurities attached to the inner wall of the workpiece and improving the cleanliness of the inner wall of the workpiece.

[0028] See also Figure 3 and Figure 4 As shown, the middle part of the top plate 108 is symmetrically rotatably connected to the second rotating rod 4; the end of the second rotating rod 4 is fixedly connected to the second spring 42; the second spring 42 and the top plate 108 are both fixedly connected; the end of the second rotating rod 4 is fixedly connected to the cross plate 43; when the workpiece moves along the top plate 108, it will contact the second rotating rod 4 and squeeze the second rotating rod 4, and the second rotating rod 4 will rotate along the top plate 108 after being subjected to pressure, and the second rotating rod 4 will drive the cross plate 43 to rotate together when the second rotating rod 4 rotates, and the rotation of the second rotating rod 4 will cause the length of the second spring 42 to change, and the cross plate 43 will contact the inner wall of the workpiece when it rotates, thereby increasing the contact area between the device and the inner wall of the workpiece and enhancing the stability of the device in fixing the workpiece.

[0029] See also Figure 4As shown, a rubber pad 5 is fixedly connected to the top of the transverse plate 43; the surface of the rubber pad 5 is an arc-shaped structure; when the transverse plate 43 contacts the workpiece, the rubber pad 5 will also contact the workpiece, because the friction coefficient of the surface of the rubber pad 5 is larger, the friction between the device and the workpiece will be increased, and the stability of the workpiece during processing will be further enhanced.

[0030] See also Figure 2 As shown, a plurality of air holes 6 are provided in the middle of the first rotating rod 106; the air holes 6 are arranged in a circular array; when the device is working, air will pass through the air holes 6 and enter the interior of the first rotating rod 106, and the air will take away the heat on the surface of the electric push rod 114, so that the surface temperature of the electric push rod 114 is reduced, and the cooling speed of the surface of the electric push rod 114 is accelerated.

[0031] See also Figure 4 As shown, a plurality of suction cups 7 are fixedly connected to the top of the top plate 108; a water bag 72 is fixedly connected to the top of the top plate 108; the water bag 72 is located inside the suction cup 7; a circular hole is provided on the surface of the water bag 72, and when the workpiece moves along the top plate 108, it will come into contact with the suction cup 7 and squeeze the suction cup 7, and the suction cup 7 will have an adsorption effect on the inner wall of the workpiece, and the workpiece will also squeeze the water bag 72, so that the water in the water bag 72 will flow out from the circular hole, and the water will flow to the inner wall of the workpiece and reduce the gap between the suction cup 7 and the workpiece, thereby enhancing the adsorption effect of the suction cup 7 on the workpiece.

[0032] Working principle: After the workpiece is set on the middle part of the first rotating rod 106, the workpiece will first come into contact with the top plate 108, and then the workpiece will slide along the arc-shaped end of the top plate 108 and come into contact with the rotating wheel 109. When the rotating wheel 109 and the workpiece come into contact, they will rotate under the action of friction. After the workpiece passes through the arc-shaped section of the top plate 108, it will reach the top of the top plate 108. Then the staff can start the electric push rod 114 to drive the sliding rod 107 to move along the first rotating rod 106. When the sliding rod 107 moves, it will drive all the connecting rods 110 to move together and change the angle of the connecting rod 110. When the connecting rod 110 moves, it will also drive the top plate 108 to move together and make the top plate 108 move along the second fixed groove 111. The top plate 108 moves When the first motor 103 is started, the first threaded rod 104 will rotate, and when the first threaded rod 104 rotates, the slider 105 will move along the first threaded rod 104. At the same time, when the second motor 113 is started, the first rotating rod 106 will rotate, and when the slider 105 moves, it will drive the first rotating rod 106 to move together, and the first rotating rod 106 will drive the top plate 108 to move together, and the top plate 108 will drive the workpiece to move together and approach the gear hobbing machine body 112. When the workpiece contacts the gear hobbing machine body 112, it will be processed by the gear hobbing machine body 112; when the workpiece moves along the top plate 108, the inner wall of the workpiece will contact the vertical plate 22 and squeeze the vertical plate 22, and the vertical plate 22 will transmit the pressure to the first spring 2 to compress the first spring 2, and the first spring 2 will release the elastic potential energy and squeeze the inner wall of the workpiece, which plays a role in correcting the deviation of the workpiece during movement, and the workpiece will also contact the roller 23 and the roller 23 will rotate under the action of friction, and the roller 23 will reduce the jamming of the workpiece during movement; when the workpiece contacts the roller 23, the workpiece will also contact the brush 3, and the brush 3 will clean the inner wall of the workpiece when it contacts the inner wall of the workpiece, reducing the debris attached to the inner wall of the workpiece. The workpiece is of high quality and has a clean and neat inner wall. When the workpiece moves along the top plate 108, it will contact the second rotating rod 4 and squeeze the second rotating rod 4. After being subjected to the pressure, the second rotating rod 4 will rotate along the top plate 108. When the second rotating rod 4 rotates, it will drive the cross plate 43 to rotate together. When the second rotating rod 4 rotates, the length of the second spring 42 will change. When the cross plate 43 rotates, it will contact the inner wall of the workpiece, increasing the contact area between the device and the inner wall of the workpiece and enhancing the stability of the device fixing the workpiece. When the cross plate 43 contacts the workpiece, the rubber pad 5 will also contact the workpiece. Because the friction coefficient of the surface of the rubber pad 5 is larger, the friction between the device and the workpiece will be increased, further enhancing the stability of the workpiece during processing.When the device is working, air will pass through the air hole 6 and enter the interior of the first rotating rod 106. The air will take away the heat on the surface of the electric push rod 114, so that the surface temperature of the electric push rod 114 is reduced, and the device cools the electric push rod 114; when the workpiece moves along the top plate 108, it will come into contact with the suction cup 7 and squeeze the suction cup 7, and the suction cup 7 will produce an adsorption effect on the inner wall of the workpiece, and the workpiece will also squeeze the water bag 72, so that the water in the water bag 72 will flow out from the round hole, and the water will flow to the inner wall of the workpiece and reduce the gap between the suction cup 7 and the workpiece, thereby enhancing the adsorption effect of the suction cup 7 on the workpiece. ;

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A workpiece positioning device for a gear hobbing machine, comprising a worktable (1); characterized in that: A first fixing groove (102) is provided in the middle of the workbench (1); a first motor (103) is fixedly connected to the middle of the workbench (1); a first threaded rod (104) is fixedly connected to the output end of the first motor (103); a slider (105) is threadedly connected to the middle of the first threaded rod (104); a second motor (113) is fixedly connected to the middle of the slider (105); a first rotating rod (106) is fixedly connected to the output end of the second motor (113); the first rotating rod (106) and the slider (105) are arranged through and are rotatably connected; an electric push rod (114) is fixedly connected to the middle of the slider (105); the electric push rod ( 114) is located inside the first rotating rod (106); the output end of the electric push rod (114) is fixedly connected to a sliding rod (107); a plurality of connecting rods (110) are hinged in the middle of the sliding rod (107); the end of the connecting rod (110) is hinged to a top plate (108); a plurality of second fixing grooves (111) are opened in the middle of the first rotating rod (106); the top plate (108) and the second fixing grooves (111) are slidingly matched; the end of the top plate (108) is arranged in an arc shape; a plurality of rotating wheels (109) are rotatably connected in the middle of the top plate (108); and a gear hobbing machine body (112) is fixedly connected to the top of the workbench (1).

2. A workpiece positioning device for a gear hobbing machine according to claim 1, characterized in that: A plurality of first springs (2) are symmetrically fixedly connected to the middle of the top plate (108); the ends of adjacent first springs (2) are fixedly connected to a vertical plate (22); a third fixing groove (24) is opened in the middle of the vertical plate (22); and a roller (23) is rotatably connected to the middle of the third fixing groove (24).

3. A workpiece positioning device for a gear hobbing machine according to claim 2, characterized in that: A plurality of bristles (3) are fixedly connected to the middle of the roller (23); the bristles (3) are arranged in an array.

4. A workpiece positioning device for a gear hobbing machine according to claim 3, characterized in that: The middle part of the top plate (108) is symmetrically rotatably connected to a second rotating rod (4); the end of the second rotating rod (4) is fixedly connected to a second spring (42); the second spring (42) and the top plate (108) are both in a fixed connection relationship; the end of the second rotating rod (4) is fixedly connected to a transverse plate (43).

5. A workpiece positioning device for a gear hobbing machine according to claim 4, characterized in that: A rubber pad (5) is fixedly connected to the top of the transverse plate (43); the surface of the rubber pad (5) is an arc-shaped structure.

6. A workpiece positioning device for a gear hobbing machine according to claim 5, characterized in that: A plurality of circular holes (6) are provided in the middle of the first rotating rod (106); the circular holes (6) are arranged in a circular array.

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