Heavy transmission shaft friction welding device

Abstract

The utility model belongs to the technical field of friction welding devices, and particularly relates to a heavy transmission shaft friction welding device which comprises a device base, two parallel transverse guide rails are fixedly connected to the top face of the device base, and a left spindle box is movably embedded in the top faces of the left ends of the two transverse guide rails. A left spindle box is movably embedded in the top faces of the right ends of the two transverse guide rails, a right spindle box is movably embedded in the top faces of the right ends of the two transverse guide rails, the right end of the left spindle box is fixedly connected with a left center clamp, the left end of the right spindle box is fixedly connected with a right center clamp, and the center line of the left center clamp and the center line of the right center clamp are coaxial. The telescopic polishing mechanism is arranged in the middle of the base of the device through the supporting frame to polish the welding end faces of the two transmission shafts, the welding end faces of the two transmission shafts to be welded are kept parallel, and therefore the two welding end faces can make full contact and rub at the beginning when friction welding is carried out; and the friction welding efficiency and the machining precision are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of friction welding devices, in particular to a friction welding device for a heavy-duty transmission shaft. Background Art

[0002] Friction welding is a new type of welding method. It generates heat and melts through local friction between two parts. The melted materials are cooled and fused again to weld together. It is usually used for the end face welding of the transmission shaft of a truck. The current friction welding device includes a rotating chuck to fix and clamp the first transmission shaft to be welded, and a non-rotating chuck to clamp the second transmission shaft to be welded. After the first transmission shaft rotates, the end of the second transmission shaft coaxially contacts the first transmission shaft, and the contact end faces of the two generate heat by friction until they melt. Then the rotating first transmission shaft stops rotating instantly, and the welding of the two transmission shafts is completed after the molten part cools and solidifies again; however, the current welding device needs to flatten the end face of the transmission shaft to be welded before welding, such as using a lathe to turn the end face of the shaft or using a milling machine to mill the end face of the shaft, and then perform friction welding, which reduces the production efficiency of friction welding and has low production accuracy; in addition, when welding the transmission shaft, the current friction welding cannot preheat the transmission shaft before welding and insulate the transmission shaft after welding, and cannot quickly cool the transmission shaft after welding. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a heavy-duty transmission shaft friction welding device, which solves the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0005] A heavy-duty transmission shaft friction welding device comprises a device base, the top surface of the device base is fixedly connected with two mutually parallel transverse guide rails, the top surfaces of the left ends of the two transverse guide rails are movably embedded with a left spindle box, and the top surfaces of the right ends of the two transverse guide rails are movably embedded with a right spindle box, the right end of the left spindle box is fixedly connected with a left center clamp, and the left end of the right spindle box is fixedly connected with a right center clamp, and the center lines of the left center clamp and the right center clamp are coaxial; a bearing seat is fixedly provided in the middle of the two transverse guide rails, and the middle of the bearing seat is rotatably connected with a double-headed reverse The left spindle box has a plurality of opposite ends, and the two ends are connected to the bottom surface of the left spindle box, and the two ends are connected to the bottom surface of the right ...

[0006] Furthermore, a left spindle motor is fixedly installed on one side of the left spindle box, a right spindle motor is fixedly installed on one side of the right spindle box, the left spindle motor is connected to the left center clamp via a synchronous belt drive, and the right spindle motor is connected to the right center clamp via a synchronous belt drive.

[0007] Furthermore, a transverse motor is fixedly connected to the left end of the device base, and an output shaft of the transverse motor is fixedly connected to the left end of the double-headed reverse screw rod.

[0008] Furthermore, a telescopic motor is fixed to the back of the support frame, and an output shaft of the telescopic motor is fixedly connected to a transmission screw, and the transmission screw is threadedly connected to a nut at the bottom end of the longitudinal slide.

[0009] Furthermore, a coolant nozzle and a flame nozzle are fixedly arranged on both sides of the support frame, and the coolant nozzle and the flame nozzle both point to the intersection of the center lines of the left center clamp and the right center clamp.

[0010] Furthermore, the grinding mechanism is a rotating grinding wheel or a rotating milling cutter disc or a fixed double-sided file.

[0011] Compared with the prior art, the utility model provides a heavy-duty transmission shaft friction welding device, which has the following beneficial effects:

[0012] The utility model provides a retractable grinding mechanism in the middle of the device base through a support frame to grind the welding end faces of the two transmission shafts, so that the welding end faces of the two transmission shafts to be welded remain parallel, so that the two welding end faces can be fully contacted and rubbed at the beginning during friction welding, thereby improving the efficiency and processing accuracy of friction welding;

[0013] The utility model has coolant nozzles and flame nozzles fixedly arranged on both sides of the support frame. Before friction welding, the flame nozzles can be turned on to preheat the welding end faces of the two transmission shafts. When friction welding is completed, the flame nozzles can be turned on to keep the welding end faces of the two transmission shafts warm, and the coolant nozzles can also be turned on to quickly cool the welding end faces of the two transmission shafts. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the front side of the main structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the rear side of the main structure of the utility model;

[0016] Figure 3 It is a front sectional schematic diagram of the main structure of the utility model.

[0017] In the figure: 1. Device base; 2. Horizontal guide rail; 3. Left spindle box; 4. Left spindle box; 5. Left center clamp; 6. Right center clamp; 7. Bearing seat; 8. Double-head reverse screw; 9. Left nut; 10. Right nut; 11. Support frame; 12. Longitudinal slide; 13. Grinding mechanism; 14. Left spindle motor; 15. Right spindle motor; 16. Transverse motor; 17. Telescopic motor; 18. Transmission screw; 19. Coolant nozzle; 20. Flame nozzle. 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. Example

[0019] like Figure 1 , 2As shown in Figure 3, a heavy-duty transmission shaft friction welding device proposed in one embodiment of the utility model includes a device base 1, the top surface of the device base 1 is fixedly connected with two mutually parallel transverse guide rails 2, the top surface of the left end of the two transverse guide rails 2 is movably embedded with a left spindle box 3, the top surface of the right end of the two transverse guide rails 2 is movably embedded with a right spindle box 4, the right end of the left spindle box 3 is fixedly connected with a left center clamp 5, the left end of the right spindle box 4 is fixedly connected with a right center clamp 6, and the center lines of the left center clamp 5 and the right center clamp 6 are coaxial; a bearing seat 7 is fixedly provided in the middle of the two transverse guide rails 2, and the middle of the bearing seat 7 rotates A double-headed reverse screw rod 8 is connected, and the double-headed reverse screw rod 8 is parallel and centrally arranged between the two transverse guide rails 2. A left nut 9 is fixedly connected to the middle part of the bottom surface of the left spindle box 3, and a right nut 10 is fixedly connected to the middle part of the bottom surface of the right spindle box 4. The left end thread of the double-headed reverse screw rod 8 is screwed into the left nut 9, and the right end thread of the double-headed reverse screw rod 8 is screwed into the right nut 10. A support frame 11 is fixedly connected to the middle part of the rear side of the device base 1, and a longitudinal slide 12 is movably engaged with the top surface of the support frame 11. The moving direction of the longitudinal slide 12 is perpendicular to the transverse guide rail 2, and a grinding mechanism 13 is fixedly connected to the top surface of the longitudinal slide 12.

[0020] In this embodiment, the left spindle box 3 clamps and fixes the left end of the transmission shaft to be welded by the left center clamp 5, and the right spindle box 4 clamps and fixes the right end of the transmission shaft to be welded by the right center clamp 6. Before welding, the left spindle box 3 and the right spindle box 4 rotate and drive the two transmission shafts to rotate in opposite directions. At this time, the grinding mechanism 13 moves forward with the longitudinal slide 12 to between the welding end faces of the two transmission shafts; then the two transmission shafts are relatively close to each other on the transverse guide rail 2 along with the left spindle box 3 and the right spindle box 4 until the welding end faces of the two transmission shafts contact the two sides of the grinding mechanism 13, at this time, the grinding mechanism 13 grinds the welding end faces of the two transmission shafts to keep the welding end faces of the two transmission shafts to be welded parallel, and then the grinding mechanism 13 retracts with the longitudinal slide 12 to make the welding end faces of the two transmission shafts directly contact, so that the two welding end faces can be fully contacted and rubbed at the beginning during friction welding, thereby improving the efficiency of friction welding;

[0021] In addition, the two drive shafts do not need to be turned or milled on the end faces before friction welding, which simplifies the processing steps of heavy drive shafts and improves the processing accuracy.

[0022] Furthermore, a left spindle motor 14 is fixedly installed on one side of the left spindle box 3, and a right spindle motor 15 is fixedly installed on one side of the right spindle box 4. The left spindle motor 14 is connected to the left center clamp 5 through a synchronous belt drive, and the right spindle motor 15 is connected to the right center clamp 6 through a synchronous belt drive.

[0023] Among them, the left spindle motor 14 is connected to the left center clamp 5 through a synchronous belt drive to make it rotate, thereby driving the transmission shaft at the left end to rotate, and the right spindle motor 15 is connected to the right center clamp 6 through a synchronous belt drive to make it rotate, thereby driving the transmission shaft at the right end to rotate. When the two rotate in opposite directions, the two transmission shafts can be frictionally heated to a melting state, and then the left spindle motor 14 and the right spindle motor 15 are instantly braked to achieve welding of the ends of the two heated transmission shafts.

[0024] Furthermore, a transverse motor 16 is fixedly connected to the left end of the device base 1 , and an output shaft of the transverse motor 16 is fixedly connected to the left end of the double-headed reverse screw 8 .

[0025] As described above, the traverse motor 16 is started to drive the double-headed reverse screw 8 to rotate forward, and the double-headed reverse screw 8 drives the left spindle box 3 and the right spindle box 4 to approach each other through the left nut 9 and the right nut 10. At this time, the above-mentioned steps of grinding the welding end faces of the two transmission shafts and performing friction welding can be performed;

[0026] When welding is completed, first loosen the two ends of the transmission shaft through the left center clamp 5 and the right center clamp 6, and then start the transverse motor 16 to reverse the double-headed reverse screw 8. At this time, the welded transmission shaft can be taken out from the openings of the left center clamp 5 and the right center clamp 6.

[0027] Furthermore, a telescopic motor 17 is fixed to the back of the support frame 11 , and a transmission screw 18 is fixedly connected to the output shaft of the telescopic motor 17 , and the transmission screw 18 is threadedly connected to a nut at the bottom end of the longitudinal slide 12 .

[0028] When the telescopic motor 17 rotates forward, the telescopic motor 17 drives the longitudinal slide 12 forward through the transmission screw 18, so that the grinding mechanism 13 stretches forward to grind between the welding end faces of the two transmission shafts; when the telescopic motor 17 rotates reversely, the telescopic motor 17 drives the longitudinal slide 12 backward through the transmission screw 18, and the grinding mechanism 13 is withdrawn, so that the welding end faces of the two transmission shafts can be contacted and friction welding can be performed.

[0029] Furthermore, a coolant nozzle 19 and a flame nozzle 20 are fixedly provided on both sides of the support frame 11 , and both the coolant nozzle 19 and the flame nozzle 20 point to the intersection of the center lines of the left center clamp 5 and the right center clamp 6 .

[0030] Among them, the coolant nozzle 19 is connected to the cooling water pump, and the flame nozzle 20 is connected to the natural gas tank for heating. Before friction welding, the flame nozzle 20 can be turned on to preheat the welding end faces of the two transmission shafts. When friction welding is completed, the flame nozzle 20 can be turned on to keep the welding end faces of the two transmission shafts warm, and the coolant nozzle 19 can also be turned on to quickly cool the welding end faces of the two transmission shafts.

[0031] Furthermore, the grinding mechanism 13 is a rotating grinding wheel or a rotating milling cutter disc or a fixed double-sided file.

[0032] Among them, when the grinding mechanism 13 is a rotating grinding wheel or a rotating milling cutter disc, the left center clamp 5 and the right center clamp 6 can grind the welding end faces of the two transmission shafts to be welded without rotating. When the grinding mechanism 13 is a double-sided file in a fixed state, the left center clamp 5 and the right center clamp 6 need to drive the transmission shaft to rotate so that the welding end faces of the two transmission shafts can be grinded.

[0033] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A heavy-duty transmission shaft friction welding device, comprising a device base (1), characterized in that: The top surface of the device base (1) is fixedly connected to two mutually parallel transverse guide rails (2); the top surfaces of the left ends of the two transverse guide rails (2) are movably engaged with a left spindle box (3); the top surfaces of the right ends of the two transverse guide rails (2) are movably engaged with a right spindle box (4); the right end of the left spindle box (3) is fixedly connected to a left center clamp (5); the left end of the right spindle box (4) is fixedly connected to a right center clamp (6); the center lines of the left center clamp (5) and the right center clamp (6) are coaxial; a bearing seat (7) is fixedly provided in the middle of the two transverse guide rails (2); the middle of the bearing seat (7) is rotatably connected to a double-headed reverse screw rod (8); the double-headed reverse screw rod (8) is parallel and The device is centrally arranged between the two transverse guide rails (2). A left nut (9) is fixedly connected to the middle of the bottom surface of the left spindle box (3). A right nut (10) is fixedly connected to the middle of the bottom surface of the right spindle box (4). The left end thread of the double-headed reverse screw rod (8) is screwed into the left nut (9). The right end thread of the double-headed reverse screw rod (8) is screwed into the right nut (10). A support frame (11) is fixedly connected to the middle of the rear side of the device base (1). A longitudinal slide (12) is movably engaged with the top surface of the support frame (11). The moving direction of the longitudinal slide (12) is perpendicular to the transverse guide rail (2). A grinding mechanism (13) is fixedly connected to the top surface of the longitudinal slide (12).

2. A heavy-duty transmission shaft friction welding device according to claim 1, characterized in that: A left spindle motor (14) is fixedly mounted on one side of the left spindle box (3), and a right spindle motor (15) is fixedly mounted on one side of the right spindle box (4); the left spindle motor (14) is connected to the left center fixture (5) via a synchronous belt transmission, and the right spindle motor (15) is connected to the right center fixture (6) via a synchronous belt transmission.

3. A heavy-duty transmission shaft friction welding device according to claim 1, characterized in that: The left end of the device base (1) is fixedly connected to a transverse motor (16), and the output shaft of the transverse motor (16) is fixedly connected to the left end of the double-headed reverse screw rod (8).

4. A heavy-duty transmission shaft friction welding device according to claim 1, characterized in that: A telescopic motor (17) is fixed to the back of the support frame (11); an output shaft of the telescopic motor (17) is fixedly connected to a transmission screw (18); and the transmission screw (18) is threadedly connected to a nut at the bottom end of the longitudinal slide plate (12).

5. A heavy-duty transmission shaft friction welding device according to claim 1, characterized in that: A coolant spray head (19) and a flame spray head (20) are fixedly arranged on both sides of the support frame (11), and the coolant spray head (19) and the flame spray head (20) both point to the intersection of the center lines of the left center clamp (5) and the right center clamp (6).

6. A heavy-duty transmission shaft friction welding device according to claim 1, characterized in that: The grinding mechanism (13) is a rotating grinding wheel or a rotating milling cutter disc or a fixed double-sided file.

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