Hard alloy high-strength nut shape machining device

Abstract

The invention discloses a hard alloy high-strength nut shape machining device, and belongs to the technical field of high-strength fastener machining equipment. According to the longitudinal chamfering assembly, a first driving motor is used for driving chamfering hobs to rotate, three sets of chamfering hobs which are arranged at equal intervals can keep the hard alloy bar blank still, and the rotating chamfering hobs are used for conducting chamfering machining on the six edges of the hexagonal hard alloy bar. The annular chamfering assembly drives a rotating base to rotate through a second driving motor and is matched with an electric push cylinder to drive a lower sliding rack to move, and an annular chamfer is cut under the condition that a bar blank is fixed through a chamfering cutter installed on the lower sliding rack. Due to the arrangement of the clamping device and the clamping device, the shape of the bar blank can be machined under the condition that the bar blank does not rotate, and the bar blank does not need to rotate, so that the bar blank can be selected to be longer, the clamping frequency of the bar blank can be reduced in the machining process, and safety accidents caused by rotation of the bar blank are avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of high-strength fastener processing equipment, and in particular relates to a hard alloy high-strength nut shape processing device. Background Art

[0002] When processing traditional nuts, the blank to be processed is rotated and processed by various tool blanks. This processing method is relatively mature and widely used in the processing of traditional nuts. However, this processing method requires the blank to be clamped on the machine tool and the blank is driven by the rotation of the machine tool spindle to be processed and rotated. Therefore, the length of the bar blank cannot be controlled. When the bar blank is driven by the machine tool to rotate, the tail of the bar blank that is too long will swing under the high-speed rotation, resulting in safety accidents. Therefore, it can only be processed at a low speed. Carbide materials are difficult to be processed at a low speed. If high-speed processing is required, only a shorter blank can be rotated. In addition, since the bar blank cannot be selected to be too long, it needs to be clamped repeatedly during processing, resulting in reduced processing efficiency. Summary of the Invention

[0003] The present invention mainly solves the technical problems existing in the above-mentioned prior art and provides a hard alloy high-strength nut shape processing device.

[0004] The above technical problems of the present invention are mainly solved through the following technical solutions: a cemented carbide high-strength nut shape processing device, including a longitudinal chamfering component, an annular chamfering component, two groups of support components and four fixed rods for support, the longitudinal chamfering component and the annular chamfering component are arranged between the two groups of support components.

[0005] Preferably, the support assembly includes a first frame, the first frame is hexagonal, and three groups of pressure roller assemblies are equally divided in a ring in the first frame. The pressure roller assembly includes a first mounting plate fixedly connected to the first frame, a first cylinder is provided on the first mounting plate, the protruding end of the first cylinder is set toward the center of the first frame, and two first guide rods are symmetrically provided on the first mounting plates on the left and right sides of the first cylinder, the two first guide rods are slidably connected to the first mounting plate, and a roller frame is fixed between the inner ends, a pressure roller is rotatably connected in the roller frame, and the protruding end of the first cylinder is fixed to the roller frame.

[0006] Preferably, the longitudinal chamfering assembly includes a second frame, the second frame is hexagonal, and three groups of chamfering hob groups are equally divided in a ring in the second frame. The chamfering hob group includes a second mounting plate fixedly connected to the second frame, and two second guide rods are symmetrically provided on the second mounting plate, and the two second guide rods are slidably connected to the second mounting plate. A tool holder is provided on the inner side of the second mounting plate, and a chamfering hob is rotatably connected in the tool holder. The inner ends of the two second guide rods are fixed to the tool holder, and a locking bolt is provided on the second mounting plate, and the tool holder is fixedly connected to the second mounting plate through the locking bolt. Each group of the chamfering hob groups also includes a first driving motor provided on the second frame, and the drive shaft of the first driving motor is connected to the chamfering hob.

[0007] Preferably, the annular chamfering assembly includes a third frame, the third frame includes a third mounting plate and a front cantilever, the third mounting plate is hexagonal, the front cantilever is fixedly connected to the front side of the third mounting plate, the front surface of the third mounting plate is provided with a rotating seat, the rotating seat is rotatably connected to the third mounting plate, the outer ring surface of the rotating seat is provided with a gear ring, the rotating seat is provided with two groups of adjustment assemblies, and the front cantilever is provided with two groups of driving assemblies and two groups of pushing assemblies for driving the adjustment assemblies.

[0008] Preferably, a machining hole is provided at the center of the rotating seat, two mutually parallel positioning planes are provided on the outer circular surface of the rotating seat, a longitudinal through hole is provided on each of the positioning planes perpendicular to the axis of the rotating seat, the longitudinal through hole passes downward to the machining hole, a transverse through hole is provided on the rotating seat at the middle position of the longitudinal through hole, which passes through the rotating seat to the left and right, two guide holes connected to the transverse through hole are provided on the front surface of the rotating seat, and the two guide holes pass through the transverse through hole and extend to the rotating seat on the rear side of the transverse through hole, the longitudinal through hole A lowering rack is slidingly provided in the through hole, and a chamfering cutter is provided at the inner end of the two lowering racks. A long tooth shaft is rotatably connected in the transverse through hole, and the long tooth shaft and the lowering rack are meshed with each other. A pushing rack is slidably connected in the two guide holes, and the two pushing racks are meshed with the long tooth shaft, and a spring is connected between the end portions of the two pushing racks located in the guide hole and the bottom of the guide hole. A pushing ring is provided on the outer ends of the four pushing racks, and the pushing ring is coaxially arranged with the rotating seat and fixedly connected to the four pushing racks.

[0009] Preferably, the driving assembly includes a second driving motor, a driving gear is connected to the driving shaft of the second driving motor, the driving gear is engaged with the gear ring on the rotating seat, the pushing assembly includes an electric push cylinder, a bull's eye wheel is provided on the protruding end of the electric push cylinder, the bull's eye wheel is against the front surface of the pushing ring, and the two groups of driving assemblies and the two groups of pushing assemblies are equally arranged on the front lifting plate.

[0010] Preferably, the first frame, the second frame, the third mounting plate in the third frame and the front cantilever frame in the third frame are all provided with through slots at their center positions for facilitating the passage of rods.

[0011] Preferably, the lower rack is arranged on the rear side of the long gear shaft, and the two pushing racks are arranged on the upper side of the long gear shaft.

[0012] Preferably, the chamfering hob is in the shape of a drum with a thin middle and thick ends, and comprises an arc ring surface with a low middle and high ends, and a plurality of blades are provided at both ends of the arc ring surface.

[0013] Preferably, four shaft-through holes are provided on the third mounting plates of the first frame, the second frame and the third frame, and the longitudinal chamfering assembly, the annular chamfering assembly and the two groups of support assemblies are connected to the fixed shaft through the shaft-through holes.

[0014] The invention has the beneficial effects that the longitudinal chamfering assembly utilizes the first drive motor to drive the chamfering hob to rotate, and the three groups of equally arranged chamfering hobs can achieve the purpose of chamfering the six edges of the hexagonal carbide bar without moving the carbide bar blank by utilizing the rotating chamfering hobs;

[0015] The annular chamfering assembly is driven by the second drive motor to rotate the rotating seat, and the electric push cylinder drives the lower rack to move. The chamfering cutter installed on the lower rack is used to cut an annular chamfer while the bar blank is fixed.

[0016] By setting up the longitudinal chamfering component and the annular chamfering component, the settings of the two can realize the processing of the shape of the bar blank without rotating the bar blank. There is no need to rotate the bar blank, so the bar blank can be selected to be longer, the number of clamping times of the bar blank can be reduced during the processing process, and safety accidents will not occur due to the rotation of the bar blank.

[0017] The first drive motor and the second drive motor directly drive the rotation of the chamfering hob and the chamfering cutter, and the rotation speed of the tool can be controlled, thereby achieving the same effect as traditional machine tool processing;

[0018] By setting up two groups of support components, the two groups of support components can support the carbide bar stock. Through the three groups of pressure roller assemblies, the bar stock blank is tightly supported between the two groups of support components, which can effectively ensure the rigidity of the carbide bar stock blank during the processing process, and facilitate the longitudinal chamfering component and the annular chamfering component to process the bar stock blank.

[0019] By setting the chamfering hob into a drum shape with thick ends, two edges on the hexagonal bar can be processed simultaneously through multiple cutting edges on both sides of the arc ring surface, thereby improving processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the support assembly of the present invention;

[0022] Figure 3 This is a schematic structural diagram of the longitudinal chamfer assembly of the present invention;

[0023] Figure 4 This is a structural schematic diagram of the annular chamfering assembly of the present invention;

[0024] Figure 5 This is a structural schematic diagram of the rotating seat of the present invention;

[0025] Figure 6 This is a structural diagram of the lower rack, chamfering cutter, long gear shaft, push rack and spring of the present invention;

[0026] Figure 7 This is a structural diagram of the bull's eye wheel and the push ring of the present invention;

[0027] Figure 8 It is a schematic diagram of the workpiece processing process of the present invention.

[0028] Figure: 1, longitudinal chamfer assembly; 2, annular chamfer assembly; 3, support assembly; 4, fixing rod; 5, first frame; 6, pressure roller assembly; 7, first mounting plate; 8, first cylinder; 9, first guide rod; 10, roller frame; 11, pressure roller; 12, second frame; 13, chamfering hob assembly; 14, second mounting plate; 15, second guide rod; 16, tool holder; 17, chamfering hob; 18, locking bolt; 19, first drive motor; 20, third frame; 21, third mounting Plate; 22. Front support; 23. Rotating seat; 24. Gear ring; 25. Processing hole; 26. Positioning plane; 27. Longitudinal through hole; 28. Horizontal through hole; 29. ​​Guide hole; 30. Lower rack; 31. Chamfer cutter; 32. Long gear shaft; 33. Push rack; 34. Spring; 35. Push ring; 36. Second drive motor; 37. Drive gear; 38. Electric push cylinder; 39. Bull's eye wheel; 40. Through groove; 41. Circular ring surface; 42. Blade; 43. Through-shaft hole. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0030] Embodiment: A device for processing the shape of a high-strength carbide nut, such as Figures 1-8 As shown, it includes a longitudinal chamfering component 1, an annular chamfering component 2, two groups of support components 3 and four fixing rods 4 for support, and is characterized in that the longitudinal chamfering component 1 and the annular chamfering component 2 are arranged between the two groups of support components 3.

[0031] The support assembly 3 includes a first frame 5, which is hexagonal. Three groups of pressure roller assemblies 6 are equally divided in a ring in the first frame 5. The pressure roller assembly 6 includes a first mounting plate 7 fixedly connected to the first frame 5. The first mounting plate 7 is provided with a first cylinder 8. The protruding end of the first cylinder 8 is set toward the center of the first frame 5, and two first guide rods 9 are symmetrically provided on the first mounting plate 7 on the left and right sides of the first cylinder 8. The two first guide rods 9 are slidably connected to the first mounting plate 7, and a roller frame 10 is fixed between the inner ends. A pressure roller 11 is rotatably connected in the roller frame 10, and the protruding end of the first cylinder 8 is fixed to the roller frame 10.

[0032] The longitudinal chamfering assembly 1 includes a second frame 12, which is hexagonal. Three groups of chamfering hob groups 13 are equally divided in a ring in the second frame 12. The chamfering hob group 13 includes a second mounting plate 14 fixedly connected to the second frame 12, and two second guide rods 15 are symmetrically provided on the second mounting plate 14. The two second guide rods 15 are slidably connected to the second mounting plate 14. A tool holder 16 is provided on the inner side of the second mounting plate 14, and a chamfering hob 17 is rotatably connected to the tool holder 16. The inner ends of the two second guide rods 15 are fixed to the tool holder 16, and a locking bolt 18 is provided on the second mounting plate 14. The tool holder 16 is fixedly connected to the second mounting plate 14 through the locking bolt 18. Each group of the chamfering hob group 13 also includes a first drive motor 19 provided on the second frame 12, and the drive shaft of the first drive motor 19 is connected to the chamfering hob 17.

[0033] The annular chamfering assembly 2 includes a third frame 20, and the third frame 20 includes a third mounting plate 21 and a front cantilever frame 22. The third mounting plate 21 is hexagonal, and the front cantilever frame 22 is fixedly connected to the front side of the third mounting plate 21. The front surface of the third mounting plate 21 is provided with a rotating seat 23, and the rotating seat 23 is rotatably connected to the third mounting plate 21. A gear ring 24 is provided on the outer ring surface of the rotating seat 23, and two groups of adjustment assemblies are provided on the rotating seat 23. The front cantilever frame 22 is provided with two groups of driving assemblies and two groups of pushing assemblies for driving the adjustment assemblies.

[0034] A machining hole 25 is provided at the center of the rotating seat 23, and two mutually parallel positioning planes 26 are provided on the outer circumferential surface of the rotating seat 23. A longitudinal through hole 27 is provided on each of the positioning planes 26 and is perpendicular to the axis of the rotating seat 23. The longitudinal through hole 27 passes downward to the machining hole 25. A transverse through hole 28 that passes through the rotating seat 23 on the left and right is provided on the rotating seat 23 in the middle of the longitudinal through hole 27. Two guide holes 29 that are connected to the transverse through hole 28 are provided on the front surface of the rotating seat 23, and the two guide holes 29 pass through the transverse through hole 28 and extend to the rotating seat 23 behind the transverse through hole 28. The longitudinal through hole 27 A lowering rack 30 is provided for sliding in the middle, and a chamfering cutter 31 is provided at the inner end of the two lowering racks 30. A long tooth shaft 32 is rotatably connected to the transverse through hole 28, and the long tooth shaft 32 is meshed with the lowering rack 30. A pushing rack 33 is slidably connected to the two guide holes 29, and the two pushing racks 33 are meshed with the long tooth shaft 32, and a spring 34 is connected between the end of the two pushing racks 33 located in the guide hole 29 and the bottom of the guide hole 29. A pushing ring 35 is provided on the outer end of the four pushing racks 33, and the pushing ring 35 is coaxially arranged with the rotating seat 23 and fixedly connected to the four pushing racks 33.

[0035] The driving assembly includes a second driving motor 36, and a driving gear 37 is connected to the driving shaft of the second driving motor 36. The driving gear 37 is engaged with the gear ring 24 on the rotating seat 23. The pushing assembly includes an electric push cylinder 38. A bull's eye wheel 39 is provided on the protruding end of the electric push cylinder 38. The bull's eye wheel 39 is against the front surface of the pushing ring 35. The two groups of driving assemblies and the two groups of pushing assemblies are equally arranged on the front lifting plate.

[0036] The first frame 5, the second frame 12, the third mounting plate 21 in the third frame 20 and the front cantilever frame 22 in the third frame 20 are all provided with through slots 40 at their centers for the bars to pass through.

[0037] The lower rack 30 is disposed on the rear side of the long gear shaft 32 , and the two pushing racks 33 are disposed on the upper side of the long gear shaft 32 .

[0038] The chamfering hob 17 is drum-shaped with a thin center and thick ends, and includes an arc annular surface 41 that is low in the center and high at both ends. A plurality of blades 42 are formed at both ends of the arc annular surface 41 .

[0039] Four shaft holes 43 are provided on the first frame 5, the second frame 12 and the third mounting plate 21 in the third frame 20, and the longitudinal chamfering assembly 1, the annular chamfering assembly 2 and the two groups of support assemblies 3 are connected to the fixed shaft through the shaft holes 43.

[0040] The principle of the present invention is that when in use, this component is only a part for processing the shape of the bar stock. During the processing, it also needs to cooperate with a driving mechanism for pushing the bar stock forward, a punching component for processing the center thread of the nut, a tapping component and a final cutting component. The hexagonal bar is passed through the support assembly 3 on the rear side, and the bar is tightened by three sets of pressure roller assemblies 6. The roller frame 10 is driven to move by the first cylinder 8, and the pressure roller 11 is pressed on the surface of the bar for support. The pressure roller 11 rotates during the movement of the bar, and the driving mechanism drives the bar to move forward. At the same time, multiple first drive motors 19 are controlled to rotate. The rotation of the first drive motor 19 drives the chamfering hob 17 in the chamfering hob assembly 13 to rotate. When the bar passes through the longitudinal chamfering assembly 1, the blades 42 on the left and right sides of the arc ring surface 41 on the chamfering hob 17 cut the edges and corners on the bar to achieve chamfering processing. For details of the processing effect, see Figure 8 Middle A section; The rod material continues to move forward, and the pushing rack 33 in the adjusting assembly of the annular chamfering assembly 2 extends forward under the action of the spring 34. The original position of the chamfering cutter 31 at the bottom of the sliding rack 30 is at the bottom of the longitudinal through hole 27. When the rod material passes through the annular chamfering assembly 2, the front end of the rod material penetrates the processing hole 25 of the rotating seat 23. The rotating seat 23 rotates rapidly on the third mounting plate 21 under the action of the second drive motor 36. When the rod material moves into the processing hole 25, it is extended by the electric push cylinder 38 and the bull's eye wheel 39 presses the pushing ring 35. The pushing ring 35 moves backward to drive the four pushing racks 33 to move backward. The movement of the pushing rack 33 drives the long gear shaft 32 to rotate, and the rotation of the long gear shaft 32 drives the sliding rack 30 to move downward, thereby sliding the chamfering cutter 31 out of the longitudinal channel. The high-speed rotating chamfering cutter 31 cuts an annular chamfering groove on the outer surface of the rod material. Figure 8 Middle B section; The punching and tapping assembly for processing the center of the bar is arranged on the front side of the front support assembly 3, and is processed synchronously while the bar is in the annular bevel groove; the forward movement of the bar is intermittent, and the moving distance is determined according to the thickness of the nut. The annular chamfering assembly 2 is processed once when it moves one thickness unit, and the longitudinal chamfering assembly 1 is in a constantly rotating state.

[0041] Finally, it should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments and is susceptible to numerous variations. Any simple modifications, equivalent variations, and modifications to the above embodiments based on the technical essence of the present invention are deemed to fall within the scope of protection of the present invention.

Claims

1. A device for processing the outer shape of a cemented carbide high-strength nut, comprising a longitudinal chamfering assembly (1), an annular chamfering assembly (2), two sets of support assemblies (3) and four fixing rods (4) for support, characterized in that: The longitudinal chamfering assembly (1) and the annular chamfering assembly (2) are arranged between the two groups of support assemblies (3).

2. A cemented carbide high-strength nut shape processing device according to claim 1, characterized in that: The support assembly (3) includes a first frame (5), the first frame (5) is hexagonal, and three groups of pressure roller assemblies (6) are equally divided in a ring in the first frame (5). The pressure roller assembly (6) includes a first mounting plate (7) fixedly connected to the first frame (5), a first cylinder (8) is provided on the first mounting plate (7), the protruding end of the first cylinder (8) is arranged toward the center of the first frame (5), and two first guide rods (9) are symmetrically provided on the first mounting plate (7) on the left and right sides of the first cylinder (8), the two first guide rods (9) are slidably connected to the first mounting plate (7), and a roller frame (10) is fixed between the inner ends of the two first guide rods (9), a pressure roller (11) is rotatably connected in the roller frame (10), and the protruding end of the first cylinder (8) is fixed on the roller frame (10).

3. The device for processing the shape of a cemented carbide high-strength nut according to claim 1, characterized in that: The longitudinal chamfering assembly (1) comprises a second frame (12), the second frame (12) is hexagonal, and three groups of chamfering hob groups (13) are equally divided in a ring in the second frame (12). The chamfering hob group (13) comprises a second mounting plate (14) fixedly connected to the second frame (12), two second guide rods (15) are symmetrically provided on the second mounting plate (14), the two second guide rods (15) are slidably connected to the second mounting plate (14), and a tool holder ( 16), a chamfering hob (17) is rotatably connected to the tool holder (16), the inner ends of the two second guide rods (15) are fixed to the tool holder (16), a locking bolt (18) is provided on the second mounting plate (14), and the tool holder (16) is fixedly connected to the second mounting plate (14) through the locking bolt (18), and each group of the chamfering hob group (13) also includes a first drive motor (19) provided on the second frame (12), and the drive shaft of the first drive motor (19) is connected to the chamfering hob (17).

4. The device for processing the shape of a cemented carbide high-strength nut according to claim 1, characterized in that: The annular chamfering assembly (2) includes a third frame (20), and the third frame (20) includes a third mounting plate (21) and a front cantilever frame (22). The third mounting plate (21) is hexagonal, and the front cantilever frame (22) is fixedly connected to the front side of the third mounting plate (21). The front surface of the third mounting plate (21) is provided with a rotating seat (23), and the rotating seat (23) is rotatably connected to the third mounting plate (21). A gear ring (24) is provided on the outer ring surface of the rotating seat (23), and two groups of adjustment assemblies are provided on the rotating seat (23). Two groups of driving assemblies and two groups of pushing assemblies for driving the adjustment assemblies are provided on the front cantilever frame (22).

5. The device for processing the shape of a high-strength cemented carbide nut according to claim 4, characterized in that: A processing hole (25) is provided at the center of the rotating seat (23), two mutually parallel positioning planes (26) are provided on the outer surface of the rotating seat (23), a longitudinal through hole (27) is provided on each of the positioning planes (26) perpendicular to the axis of the rotating seat (23), the longitudinal through hole (27) passes downward to the processing hole (25), a transverse through hole (28) is provided on the rotating seat (23) at the middle position of the longitudinal through hole (27) and passes through the rotating seat (23) on the left and right, two guide holes (29) are provided on the front surface of the rotating seat (23) and are connected to the transverse through hole (28), and the two guide holes (29) pass through the transverse through hole (28) and extend to the rotating seat (23) on the rear side of the transverse through hole (28), the longitudinal through hole (27) ) is provided with a sliding lower rack (30), and the inner ends of the two lower racks (30) are each provided with a chamfering cutter (31); a long tooth shaft (32) is rotatably connected in the transverse through hole (28), and the long tooth shaft (32) and the lower rack (30) are meshed with each other; a push rack (33) is slidably connected in the two guide holes (29), and the two push racks (33) are meshed with the long tooth shaft (32), and a spring (34) is connected between the end portions of the two push racks (33) located in the guide hole (29) and the bottom of the guide hole (29); a push ring (35) is provided on the outer ends of the four push racks (33), and the push ring (35) is coaxially arranged with the rotating seat (23) and fixedly connected to the four push racks (33).

6. The device for processing the shape of a high-strength cemented carbide nut according to claim 5, characterized in that: The driving assembly includes a second driving motor (36), a driving gear (37) is connected to the driving shaft of the second driving motor (36), and the driving gear (37) is engaged with the gear ring (24) on the rotating seat (23). The pushing assembly includes an electric pushing cylinder (38), and a bull's eye wheel (39) is provided on the protruding end of the electric pushing cylinder (38). The bull's eye wheel (39) is against the front surface of the pushing ring (35). Two groups of the driving assemblies and two groups of pushing assemblies are equally arranged on the front lifting plate.

7. The device for processing the outer shape of a cemented carbide high-strength nut according to claim 6, characterized in that: The first frame (5), the second frame (12), the third mounting plate (21) in the third frame (20) and the front support frame (22) in the third frame (20) are all provided with through slots (40) for facilitating the passage of rods at their central positions.

8. The device for processing the shape of a high-strength cemented carbide nut according to claim 5, characterized in that: The lower rack (30) is arranged on the rear side of the long toothed shaft (32), and the two pushing racks (33) are arranged on the upper side of the long toothed shaft (32).

9. The device for processing the shape of a high-strength cemented carbide nut according to claim 3, characterized in that: The chamfering hob (17) is in the shape of a drum with a thin middle and thick ends, and comprises an arc annular surface (41) which is low in the middle and high at both ends, and a plurality of blades (42) are provided at both ends of the arc annular surface (41).

10. The device for processing the shape of a high-strength cemented carbide nut according to claim 4, characterized in that: Four shaft-through holes (43) are provided on the first frame (5), the second frame (12) and the third mounting plate (21) in the third frame (20); the longitudinal chamfering assembly (1), the annular chamfering assembly (2) and the two groups of support assemblies (3) are connected to the fixed shaft through the shaft-through holes (43).

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