A quick aligning and hot press fitting clamp for intermediate shaft

Abstract

The application provides a middle shaft quick gear alignment hot press fitting clamp, which comprises a machine base, a vertical plate arranged on the machine base, a lower centering clamp base for centering and clamping a lower part of a shaft body, an upper centering mechanism arranged on the vertical plate and used for pressing the shaft body to the lower centering clamp base and centering the shaft body, an inclined tooth gear alignment mechanism and a straight tooth gear alignment mechanism arranged on the vertical plate, the inclined tooth gear alignment mechanism comprising an inclined tooth gear alignment head and an inclined tooth cylinder, the inclined tooth cylinder driving the inclined tooth gear alignment head to align the inclined gear of the middle shaft, and the straight tooth gear alignment mechanism comprising a straight tooth gear alignment head and a straight tooth cylinder, the straight tooth cylinder driving the straight tooth gear alignment head to align the straight gear of the middle shaft. The middle shaft quick gear alignment hot press fitting clamp meets the gear alignment requirements of different types of gears on the middle shaft, does not need to be frequently disassembled and replaced with the gear alignment mechanism, reduces downtime, and improves production efficiency.

Description

Technical Field

[0001] This invention relates to the technical field of clamps, and in particular to a quick-set gear hot-press clamp for intermediate shafts. Background Technology

[0002] An intermediate shaft is a shaft located between the input and output shafts during power transmission. In mechanical transmission, the input shaft is usually driven by a motor, engine, etc., while the output shaft is where the mechanical equipment operates. The intermediate shaft mainly serves to transmit power along parallel axes, connecting the input and output shafts.

[0003] Gear hot pressing is an assembly process that uses the principle of thermal expansion and contraction to achieve a tight connection between gears and shafts (or other mating parts). It is widely used in the field of mechanical manufacturing, and is especially suitable for gear transmission structures that require high strength and high precision.

[0004] like Figure 1 As shown, an intermediate shaft includes a shaft body 1 and a gear 2 sleeved on the shaft body 1. A center hole 3 is provided on the top surface of the shaft body 1. The gear 2 is sleeved on the shaft body 1 by heat pressing. The core principle of the heat pressing of the gear 2 is to heat the gear 2, causing its inner hole to expand and increase in diameter. At this time, the gear 2 is sleeved on the shaft body 1. After the gear 2 cools down, the inner hole of the gear 2 shrinks, forming an interference fit with the shaft body 1, thereby achieving a firm connection between the gear 2 and the shaft body 1.

[0005] Currently, when gears are hot-pressed, in order to avoid displacement of the shaft and gear, a fixture is usually needed to position the shaft and gear. Gears can be divided into spur gears and helical gears according to their tooth profiles. Since there are differences in the tooth profiles of spur gears and helical gears, when existing fixtures are used to clamp and position spur gears or helical gears, the corresponding tooth-matching mechanism needs to be selected according to the tooth-matching requirements of the spur gear or helical gear.

[0006] The existing technical solutions mentioned above have the following drawbacks: when alternating the production of spur gear intermediate shafts and helical gear intermediate shafts, it is necessary to frequently disassemble and replace different gear-matching mechanisms according to the gear-matching requirements of spur gears or helical gears, which increases downtime and reduces production efficiency. Summary of the Invention

[0007] The problem to be solved by the present invention is to provide a quick gear-fitting hot press fixture for intermediate shafts, which addresses the above-mentioned shortcomings of the prior art and solves the problem of reduced production efficiency in the prior art.

[0008] The above-mentioned objective of this invention is achieved through the following technical solution: a rapid gear-aligning hot-pressing fixture for an intermediate shaft, comprising a base, a vertical plate on the base, a lower centering clamp on the base for centering and clamping the lower part of the shaft, an upper centering mechanism on the vertical plate for pressing the shaft against the lower centering clamp and centering the shaft, and a helical gear-aligning mechanism and a spur gear-aligning mechanism on the vertical plate. The helical gear-aligning mechanism includes a helical gear-aligning head and a helical gear cylinder, the helical gear cylinder driving the helical gear-aligning head to align the gears of the intermediate shaft. The spur gear-aligning mechanism includes a spur gear-aligning head and a spur gear cylinder, the spur gear cylinder driving the spur gear-aligning head to align the gears of the intermediate shaft.

[0009] The invention is further configured such that: the helical tooth pairing mechanism includes a helical tooth plate, which is disposed on the front side of the upright plate. The helical tooth plate has helical tooth mounting holes along the thickness direction. A helical tooth guide cylinder passes through the helical tooth mounting holes. The middle part of the helical tooth guide cylinder has a guide seat sliding hole. A tooth head seat is slidably disposed in the guide seat sliding hole. The helical tooth cylinder is disposed on the back side of the helical tooth guide cylinder. The tooth head seat is connected to the piston rod of the helical tooth cylinder. A mounting groove is disposed on the front side of the tooth head seat. The helical tooth pairing head is inserted into the mounting groove. The helical tooth pairing head is fixed to the tooth head seat by locking screws that pass radially through the tooth head seat.

[0010] The present invention is further configured such that the head of the helical tooth pair is spherical.

[0011] The present invention is further configured such that: the straight tooth matching mechanism includes a straight tooth plate, which is vertically disposed on the front side of the upright plate; the straight tooth plate has a straight tooth mounting hole along the thickness direction; a straight tooth guide cylinder passes through the straight tooth mounting hole; the straight tooth guide cylinder has a guide head sliding hole in the middle; a straight tooth matching head is slidably disposed in the guide head sliding hole; the straight tooth cylinder is disposed on the back side of the straight tooth guide cylinder; and the straight tooth matching head is connected to the piston rod of the straight tooth cylinder.

[0012] The present invention is further configured such that: the straight tooth tooth head is provided with a snap-fit ​​hole along the thickness direction, and the piston rod of the straight tooth cylinder is screwed with a snap-fit ​​screw, which snaps into the snap-fit ​​hole.

[0013] The present invention is further configured such that the head of the straight tooth pair is straight tooth-shaped.

[0014] The invention is further configured such that: the lower centering clamp includes a base body, a support platform is provided on the top surface of the base body, and a plurality of claw seats connected to the base body are equidistantly arranged on the outer side wall of the support platform. A guide post groove is provided on the top surface of the claw seat, and a vertical moving post is slidably arranged in the guide post groove. A gripper is hinged to the top of the vertical moving post, and the top of the gripper has a claw head protruding outward at both ends. A guide plate is provided on the outer end surface of the claw seat. The end face of the guide plate facing the center of the lower centering clamp is a clamping limiting surface, and the top surface of the guide plate is a releasing guiding surface. When the outer end of the claw head slides to the clamping limiting surface, the gripper clamps the shaft body in a centering manner. When the outer end of the claw head slides to the releasing guiding surface, the gripper releases the centering clamp on the shaft body. A driving mechanism is provided in the base body, and the driving mechanism is used to drive the vertical moving post to slide axially along the guide post groove.

[0015] The invention is further configured such that: a gradually narrowing upper movable hole and a lower movable hole are sequentially formed downwards on the top surface of the support platform; multiple limiting grooves are formed on the wall of the lower movable hole; a groove is formed on the top surface of the claw seat; the inner end of the groove communicates with the upper movable hole; the outer end of the groove communicates with the guide column groove; the driving mechanism includes a lifting column and a lifting assembly; the lifting column is slidably disposed in the lower movable hole; a limiting strip that slides with the limiting groove is provided on the column surface of the lifting column; and an upper stud is coaxially disposed on the top surface of the lifting column. A hinge seat is slidably mounted on the stud and installed in the upper movable hole. A locking nut is threadedly connected to the upper stud to press the hinge seat onto the lifting column. An inner hinge groove is provided on the side wall of the hinge seat, and an outer hinge groove is provided on the side wall of the vertical column. A pin is passed through the claw seat, and a linkage is rotatably mounted on the pin. The inner end of the linkage extends into the inner hinge groove and is hinged to the hinge seat through the hinge shaft. The outer end of the linkage extends into the outer hinge groove and is hinged to the vertical column through the hinge shaft. The lifting assembly is used to drive the lifting column to perform lifting and lowering movements.

[0016] The invention is further configured such that: the lifting assembly includes a bevel gear shaft, a bevel gear, and a bevel sleeve; the outer end of the bevel gear shaft is rotatably mounted on an outer rotating hole; a support seat is provided on the top surface of the base; an inner rotating hole is opened on the side wall of the support seat facing the bevel gear shaft; the inner end of the bevel gear shaft is rotatably mounted on the inner rotating hole; a spline hole is opened on the outer end face of the bevel gear shaft; a drive motor is fixedly mounted on the top surface of the base; the spline output shaft of the drive motor is splinedly connected to the spline hole; the bevel gear is rotatably mounted on the top of the seat groove and meshes with the bevel gear shaft; an insertion hole is opened in the middle of the bevel gear; a bevel sleeve is inserted into the insertion hole; a lifting screw hole is opened in the middle of the bevel sleeve; and a lower stud is coaxially provided on the bottom surface of the lifting column and threadedly connected to the lifting screw hole.

[0017] The present invention is further configured such that: the upper centering mechanism includes a slide table, the slide table is slidably disposed on the front side of the upright plate, a top plate is vertically disposed on the slide table, an upper center is disposed on the bottom surface of the top plate, a cylinder seat is disposed on the top of the upright plate, a hydraulic cylinder is disposed on the cylinder seat, and the piston rod of the hydraulic cylinder passes through the cylinder seat and is connected to the top surface of the top plate.

[0018] In summary, the beneficial technical effects of the present invention are as follows:

[0019] (1) This intermediate shaft quick gear-setting hot press fixture is equipped with two sets of clearly defined helical gear-setting mechanisms and spur gear-setting mechanisms on the vertical plate. The helical gear-setting mechanism can quickly set the helical gears on the intermediate shaft, and the spur gear-setting mechanism can quickly set the spur gears on the intermediate shaft. This meets the gear-setting requirements of different types of gears on the intermediate shaft, eliminates the need for frequent disassembly and replacement of the gear-setting mechanism, reduces downtime, and improves production efficiency.

[0020] (2) This intermediate shaft quick-set gear hot-press clamping fixture, with its lower centering chuck and upper centering mechanism, constructs a precise shaft centering clamping system. The lower centering chuck clamps the bottom of the shaft, ensuring accurate centering of the bottom position during clamping and providing a stable support foundation for the intermediate shaft. The upper centering mechanism's upper center applies appropriate pressure from the top of the shaft, creating a coordinated positioning effect with the lower centering chuck, further constraining the axial and radial movement of the shaft. This coordinated centering clamping method not only significantly improves the stability of the shaft clamping but also substantially enhances the centering accuracy. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the intermediate shaft in this invention;

[0022] Figure 2 This is a schematic diagram of the structure of the intermediate shaft rapid gear hot pressing fixture in this invention;

[0023] Figure 3 This is a schematic diagram of the structure of the lower centering clamp in this invention;

[0024] Figure 4 This is a cross-sectional view of the lower centering clamp in this invention;

[0025] Figure 5 This is a schematic diagram of the helical tooth-pairing mechanism in this invention;

[0026] Figure 6 This is a cross-sectional view of the helical tooth-pairing mechanism in this invention;

[0027] Figure 7 This is a schematic diagram of the structure of the helical gear and the helical tooth pair in this invention;

[0028] Figure 8This is a schematic diagram of the straight tooth-to-tooth mechanism in this invention;

[0029] Figure 9 This is a cross-sectional view of the straight tooth-to-tooth mechanism in this invention;

[0030] Figure 10 This is a schematic diagram of the structure of the spur gear and the spur gear tooth head in this invention.

[0031] In the above attached diagram: 1. Shaft; 2. Gear; 3. Center hole; 4. Machine base; 5. Vertical rod; 6. Worktable; 7. Connecting rod; 8. Pad; 9. Vertical plate; 10. Opening; 11. Lower rib plate; 12. Lower centering clamp; 13. Base; 14. Seat groove; 15. External rotating hole; 16. Support platform; 17. Upper movable hole; 18. Lower movable hole; 19. Limiting slide groove; 20. Claw seat; 21. Groove; 22. Guide column 23. Groove; 24. Vertical column; 25. Gripper; 26. Gripper head; 27. Guide plate; 28. Clamping limit surface; 29. ​​Release guide surface; 20. Protrusion; 31. Lifting column; 32. Limiting slide bar; 33. Upper stud; 34. Lower stud; 35. Hinge seat; 36. Locking nut; 37. Inner hinge groove; 38. Outer hinge groove; 39. Pin; 30. Linkage frame; 31. Bevel gear shaft; 30. 40. Support base; 41. Inner rotating hole; 42. Spline hole; 43. Drive motor; 44. Bevel gear; 45. Insertion sleeve hole; 46. Tapered sleeve; 47. Lifting screw hole; 48. Slide table; 49. Slide rail; 50. Slider; 51. Center plate; 52. Connecting plate; 53. Cylinder seat; 54. Upper rib plate; 55. Hydraulic cylinder; 56. Helical gear tooth-setting mechanism; 57. Helical gear plate; 58. Helical gear mounting hole; 59. Helical gear guide cylinder; 60. Helical tooth flange; 61. Guide seat sliding hole; 62. Helical tooth cylinder; 63. Tooth head seat; 64. Mounting groove; 65. Helical tooth tooth head; 66. Locking screw; 67. Straight tooth tooth mechanism; 68. Straight tooth plate; 69. Reinforcing plate; 70. Straight tooth mounting hole; 71. Straight tooth guide cylinder; 72. Straight tooth flange; 73. Guide head sliding hole; 74. Snap-fit ​​screw; 75. Straight tooth tooth head; 76. Snap-fit ​​hole. Detailed Implementation

[0032] To make the technical means, creative features, objectives and effects of this invention clearer and easier to understand, the invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0033] like Figure 2As shown, the present invention proposes a quick gear-fitting hot-pressing fixture for intermediate shafts, including a base 4. The base 4 has uprights 5, a worktable 6, and connecting rods 7. The uprights 5 are vertically arranged, and there are four uprights 5 in a rectangular arrangement. The worktable 6 is welded to the top of the four uprights 5. There are four connecting rods 7, and the four connecting rods 7 are welded between adjacent uprights 5.

[0034] like Figure 2 As shown, a pad 8, which is a rectangular plate, is screwed onto the top surface of the base 4. A vertical plate 9 is vertically mounted on the pad 8. The side of the vertical plate 9 facing the workstation is the front, and the side facing away from the workstation is the back. The vertical plate 9 is welded to the top surface of the pad 8. An opening 10, which is rectangular, is formed on the side wall of the vertical plate 9 along its thickness. Two lower ribs 11, which are triangular plates, are symmetrically arranged between the top surface of the pad 8 and the back of the vertical plate 9. The lower ribs 11 are fixed to both the pad 8 and the vertical plate 9 by welding. The lower ribs 11 are used to enhance the structural strength between the pad 8 and the vertical plate 9.

[0035] like Figure 2 and 4 As shown, a lower centering clamp 12 is provided on the top surface of the machine base 4. The lower centering clamp 12 is used to center and clamp the shaft body 1 of the intermediate shaft. The lower centering clamp 12 includes a seat body 13. The seat body 13 is screwed to the worktable 6. A seat groove 14 is provided on the bottom surface of the seat body 13. An outer rotating hole 15 is provided on the outer side wall of the seat body 13. The outer rotating hole 15 communicates with the seat groove 14.

[0036] like Figure 3 and 4 As shown, a cylindrical support platform 16 is fixedly connected to the top surface of the base 13. The top surface of the support platform 16 abuts against the bottom surface of the shaft 1, and the support platform 16 provides basic support for the intermediate shaft clamped on the lower centering clamp 12. An upper movable hole 17 and a lower movable hole 18 are sequentially formed downwards on the top surface of the support platform 16. Both the upper movable hole 17 and the lower movable hole 18 are circular holes, with the diameter of the lower movable hole 18 being smaller than the diameter of the upper movable hole 17. The lower movable hole 18 communicates with the seat groove 14, and two symmetrically formed limiting grooves 19 are formed on the hole wall of the lower movable hole 18.

[0037] like Figure 3 and 4As shown, three claw seats 20 are equidistantly arranged circumferentially on the outer side wall of the support platform 16, and all three claw seats 20 are fixedly connected to the top surface of the base body 13. Each claw seat 20 has a groove 21 on its top surface, and the inner end of the groove 21 communicates with the upper movable hole 17. Each claw seat 20 also has a guide post groove 22 on its top surface. The guide post groove 22 is a circular groove, and its lower end extends into the base body 13. The guide post groove 22 is located outside the groove 21, and the guide post groove 22 communicates with the outer end of the groove 21.

[0038] like Figure 3 and 4 As shown, a vertical moving post 23 is slidably disposed on the guide post groove 22. A gripper 24 is hinged to the top of the vertical moving post 23. The top of the gripper 24 has a claw head 241, both ends of which protrude outward. A lever 25 is fixedly connected to the bottom of the outer end face of the gripper 24. A guide plate 26 is screwed to the end face of the claw seat 20 away from the support platform 16. The end face of the guide plate 26 facing the center of the lower centering clamp 12 is the clamping limiting surface 261. The arc-shaped surface at the top of the guide plate 26 is the releasing guiding surface 262. A protrusion 27 that cooperates with the lever 25 is fixedly connected to the inner end face of the guide plate 26.

[0039] When the lower centering clamp 12 is working, the vertical column 23 moves downward, driving the jaws 24 downward. During this process, the outer end of the jaw head 241 slides from the release guide surface 262 to the clamping limit surface 261. At this time, the three jaws 24 center and clamp the shaft 1. Conversely, when the vertical column 23 moves upward, it pushes the jaws 24 upward. The outer end of the jaw head 241 slides from the clamping limit surface 261 to the release guide surface 262. During this process, the push block 25 is limited by the protrusion 27, causing the jaws 24 to rotate outward. At this time, the three clamping contacts center and clamp the shaft 1.

[0040] like Figure 3 and 4 As shown, a drive mechanism is provided inside the base 13. The drive mechanism is used to drive the vertical column 23 to slide axially along the guide column groove 22. The drive mechanism includes a lifting column 28 and a lifting assembly.

[0041] like Figure 3 and 4 As shown, the lifting column 28 is slidably disposed within the lower movable hole 18. Two limiting slide bars 29 are symmetrically arranged on the cylindrical surface of the lifting column 28. The limiting slide bars 29 are slidably engaged with the limiting slide groove 19, thus restricting the rotation of the lifting column 28. An upper stud 30 is coaxially disposed on the top surface of the lifting column 28, and a lower stud 31 is coaxially disposed on the bottom surface of the lifting column 28. A hinge seat 32 is sleeved on the upper stud 30, and the hinge seat 32 is slidably disposed within the upper movable hole 17. A locking nut 33 is threadedly connected to the upper stud 30 to press the hinge seat 32 onto the lifting column 28.

[0042] like Figure 3 and4 As shown, the side wall of the hinge seat 32 has an inner hinge groove 34, and the side wall of the vertical column 23 has an outer hinge groove 35. Each claw seat 20 is fitted with a pin 36, and retaining rings are fitted at both ends of the pin 36 to restrict the axial sliding of the pin 36. A connecting frame 37 is rotatably mounted on the pin 36. The inner end of the connecting frame 37 extends into the inner hinge groove 34 and is hinged to the hinge seat 32 through the hinge shaft. The outer end of the connecting frame 37 extends into the outer hinge groove 35 and is hinged to the vertical column 23 through the hinge shaft.

[0043] like Figure 3 and 4 As shown, the lifting assembly is used to drive the lifting column 28 to perform lifting movements. The lifting assembly includes a bevel shaft 38, a bevel gear 432, and a cone sleeve 45.

[0044] like Figure 3 and 4 As shown, the outer end of the bevel gear shaft 38 is rotatably mounted on the outer rotating hole 15. A support base 39 is screwed onto the top surface of the worktable 6. An inner rotating hole 40 is formed on the side wall of the support base 39 facing the bevel gear shaft 38, and the inner end of the bevel gear shaft 38 is rotatably mounted on the inner rotating hole 40. A spline hole 41 is formed on the outer end face of the bevel gear shaft 38. A drive motor 42 is fixedly mounted on the top surface of the worktable 6. The splined output shaft of the drive motor 42 is splinedly connected to the spline hole 41, and the drive motor 42 is used to drive the bevel gear shaft 38 to rotate.

[0045] like Figure 3 and 4 As shown, the bevel gear 432 is rotatably mounted on the top of the seat groove 14, and meshes with the bevel gear shaft 38. A sleeve hole 44 is provided in the middle of the bevel gear 432, and a tapered sleeve 45 is inserted into the sleeve hole 44. The tapered sleeve 45 is screwed to the bottom surface of the bevel gear 432, and a lifting screw hole 46 is provided in the middle of the tapered sleeve 45 for threaded connection with the lower stud 31.

[0046] When this drive mechanism is working, the drive motor 42 drives the bevel gear 432 to rotate by driving the bevel shaft 38 to rotate. Since the lower stud 31 is threadedly connected to the lifting screw hole 46 of the cone sleeve 45, and the lower stud 31 is fixed to the bottom surface of the lifting column 28, and the cone sleeve 45 is fixedly installed on the bevel gear 432, and the limiting slide 29 and the limiting slide groove 19 cooperate to limit the rotation of the lifting column 28, the rotation of the bevel gear 432 will drive the lifting column 28 to perform lifting and lowering movements. Since one end of the connecting frame 37 is hinged to the hinge seat 32 and the other end is hinged to the vertical column 23, and the middle part of the connecting frame 37 is rotatably set on the claw seat 20 through the pin 36, when the lifting column 28 drives the hinge seat 32 to perform lifting and lowering movements, the vertical column 23 will reciprocate axially.

[0047] like Figure 2As shown, an upper centering mechanism is provided on the vertical plate 9. The upper centering mechanism centers the intermediate shaft while pressing it against the lower centering clamp 12. The upper centering mechanism includes a slide table 47, a center plate 50, an upper center, and a hydraulic cylinder 54.

[0048] like Figure 2 As shown, the slide table 47 is slidably mounted on the front of the vertical plate 9. A slide rail 48 is screwed onto the side wall of the vertical plate 9, and a slider 49 that slides with the slide rail 48 is screwed onto the slide table 47. The top plate 50 is vertically mounted on the slide table 47 and is connected to the slide table 47 by welding. A connecting plate 51 is welded and fixed between the top surface of the top plate 50 and the front of the slide table 47. The connecting plate 51 is used to enhance the connection strength between the slide table 47 and the top plate 50. The upper top flange is connected to the bottom surface of the top plate 50.

[0049] like Figure 2 As shown, a cylinder seat 52 is welded and fixed to the top surface of the upright plate 9. An upper rib 53 is provided between the bottom surface of the cylinder seat 52 and the back surface of the upright plate 9. The upper rib 53 is used to enhance the structural strength between the upright plate 9 and the cylinder seat 52. The hydraulic cylinder 54 is fixedly installed on the top surface of the cylinder seat 52. The piston rod of the hydraulic cylinder 54 passes through the cylinder seat 52 and is flanged to the top surface of the center plate 50. When the piston rod of the hydraulic cylinder 54 extends or retracts, it will drive the upper center to perform a reciprocating linear motion up and down through the center plate 50.

[0050] This intermediate shaft quick-set gear hot-press clamping fixture, utilizing a lower centering clamp 12 and an upper centering mechanism, constructs a precise centering and clamping system for the shaft 1. The lower centering clamp 12 clamps the bottom of the shaft 1, ensuring accurate centering of the bottom position during clamping and providing a stable support foundation for the intermediate shaft. The upper centering mechanism's upper center applies appropriate pressure from the top of the shaft 1, creating a corresponding positioning effect with the lower centering clamp 12, further constraining the axial and radial movement of the shaft 1. This coordinated centering and clamping method not only significantly improves the stability of the shaft 1 clamping but also substantially enhances the centering accuracy.

[0051] like Figure 2 As shown, the vertical plate 9 is provided with a helical gear matching mechanism 55 and a spur gear matching mechanism 66. The helical gear matching mechanism 55 is used to quickly match the gears of the intermediate shaft with the helical gear 2, and the spur gear matching mechanism 66 is used to quickly match the gears of the intermediate shaft with the spur gear 2.

[0052] like Figure 5 and 6As shown, the helical gear meshing mechanism 55 includes a helical gear plate 56, which is a rectangular plate. The helical gear plate 56 is screwed to the front of the vertical plate 9. The helical gear plate 56 has three circular helical gear mounting holes 57 arranged in a row along its thickness direction. A cylindrical helical gear guide tube 58 passes through the helical gear mounting holes 57. A helical gear flange 59, which is screwed to the helical gear plate 56, is fixedly connected to the outer wall of the helical gear guide tube 58. The helical gear guide tube 58 has a guide seat sliding hole 60 in the middle, which is also circular.

[0053] like Figure 5 and 6 As shown, a helical gear cylinder 61 is screwed to the back of the helical gear guide cylinder 58. The helical gear cylinder 61 passes through the opening 10, and the piston rod of the helical gear cylinder 61 has external threads. A toothed head seat 62 is slidably disposed in the guide seat sliding hole 60. The toothed head seat 62 is threadedly connected to the piston rod of the helical gear cylinder 61 by means of a threaded hole. The helical gear cylinder 61 is used to drive the toothed head seat 62 to perform reciprocating linear motion along the guide seat sliding hole 60.

[0054] like Figure 6 and 7 As shown, a mounting groove 63 is provided on the end face of the gear head seat 62 opposite to the helical gear cylinder 61. The mounting groove 63 is a circular groove. A helical gear tooth head 64 is inserted into the mounting groove 63. The helical gear tooth head 64 is fixed to the gear head seat 62 by a locking screw 65 that passes radially through the gear head seat 62. The head of the helical gear tooth head 64 is spherical and is inserted into the tooth groove of the helical gear 2. The head of the helical gear tooth head 64 abuts against the pitch circle of the helical gear 2.

[0055] like Figure 8 and 9 As shown, the spur gear mechanism 66 includes a spur gear plate 67, which is vertically disposed on the front side of the upright plate 9 and fixed to the front side of the upright plate 9 by screws. A reinforcing plate 68 is provided between the side wall of the spur gear plate 67 and the front side of the upright plate 9, and the reinforcing plate 68 is connected to the spur gear plate 67 and the upright plate 9 by screws. The spur gear plate 67 has three square spur gear mounting holes 69 arranged in a row along its thickness direction. A square cylindrical spur gear guide cylinder 70 passes through the spur gear mounting holes 69, and a spur gear flange 71, which is screwed to the spur gear plate 67, is fixedly connected to the outer side wall of the spur gear guide cylinder 70. The spur gear guide cylinder 70 has a guide head sliding hole 72 in the middle, and the guide head sliding hole 72 is a square hole.

[0056] like Figure 8 and 9As shown, a straight-tooth guide cylinder 73 is screwed to the back of the straight-tooth guide cylinder 70. A locking screw 74, which is T-shaped, is screwed to the piston rod of the straight-tooth cylinder 73. A straight-tooth toothed head 75 is slidably disposed in the guide head sliding hole 72. The straight-tooth toothed head 75 has a locking hole 76 along the thickness direction. The locking hole 76 is T-shaped and engages with the locking screw 74, thereby connecting the straight-tooth toothed head 75 to the piston rod of the straight-tooth cylinder 73. The straight-tooth cylinder 73 drives the straight-tooth toothed head 75 to reciprocate linearly along the guide head sliding hole 72.

[0057] like Figure 9 and 10 As shown, the head of the spur gear toothing head 75 is spur-shaped. The head of the spur gear toothing head 75 is inserted into the tooth groove of the spur gear 2. The head of the spur gear toothing head 75 can better fit with the tooth groove of the spur gear 2, which is beneficial to improving the tooth setting accuracy.

[0058] This intermediate shaft quick gear-setting hot press fixture has two sets of clearly defined helical gear-setting mechanisms 55 and spur gear-setting mechanisms 66 on the vertical plate 9. The helical gear-setting mechanism 55 can quickly set the helical gear 2 on the intermediate shaft, and the spur gear-setting mechanism 66 can quickly set the spur gear 2 on the intermediate shaft. This meets the gear-setting requirements of different types of gears 2 on the intermediate shaft, eliminating the need for frequent disassembly and replacement of the gear-setting mechanism, reducing downtime, and improving production efficiency.

[0059] When this intermediate shaft quick-set gear hot-press clamping fixture is in operation:

[0060] S1: The worker places the shaft 1 of the intermediate shaft on the support platform 16, which provides basic support for the shaft 1. Then, the drive motor 42 drives the bevel gear 432 to rotate by driving the bevel gear shaft 38. Since the lower stud 31 is threadedly connected to the lifting screw hole 46 of the cone sleeve 45, and the lower stud 31 is fixed to the bottom surface of the lifting column 28, and the cone sleeve 45 is fixedly installed on the bevel gear 432, while the limiting slide 29 and the limiting slide groove 19 cooperate to limit the rotation of the lifting column 28, when the bevel gear 432... When the lifting column 28 is rotated upward, since one end of the connecting frame 37 is hinged to the hinge seat 32 and the other end is hinged to the vertical column 23, and the middle part of the connecting frame 37 is rotatably set on the claw seat 20 through the pin 36, the lifting column 28 drives the hinge seat 32 to move upward, which will drive the vertical column 23 to move downward. The vertical column 23 moves downward, which drives the claw 24 to move downward. During this process, the outer end of the claw head 241 slides from the release guide surface 262 to the clamping limit surface 261. At this time, the three claws 24 center and clamp the shaft 1.

[0061] S2: The worker, wearing heat-resistant gloves, sets the heated gear 2 onto the shaft 1, and then selects either the helical gear setting mechanism 55 or the spur gear setting mechanism 66 to set the gear 2 according to the tooth profile of the gear 2.

[0062] S3: The hydraulic cylinder 54 drives the upper center to move downward through the center plate 50 until the upper center is inserted into the center hole 3 of the shaft 1. At this time, the lower centering clamp 12 and the upper centering mechanism cooperate to achieve coordinated centering and clamping of the shaft 1. The helical gear tooth setting mechanism 55 or the straight gear tooth setting mechanism 66 also completes the tooth setting and radial positioning of the gear 2. After the gear 2 cools down, the inner hole of the gear 2 shrinks and forms an interference fit with the shaft 1, thereby achieving a firm connection between the gear 2 and the shaft 1.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A quick-set gear hot-press clamping fixture for intermediate shafts, characterized in that: The machine includes a base (4), a vertical plate (9) is provided on the base (4), a lower centering clamp (12) is provided on the base (4) for centering and clamping the lower part of the shaft (1), an upper centering mechanism is provided on the vertical plate (9) for pressing the shaft (1) against the lower centering clamp (12) and centering the shaft (1), and a helical gear matching mechanism (55) and a spur gear matching mechanism (66) are provided on the vertical plate (9). The helical gear matching mechanism (55) includes a helical gear matching head (64) and a helical gear cylinder (61). The helical gear cylinder (61) drives the helical gear matching head (64) to match the helical gear of the intermediate shaft. The spur gear matching mechanism (66) includes a spur gear matching head (75) and a spur gear cylinder (73). The spur gear cylinder (73) drives the spur gear matching head (75) to match the spur gear of the intermediate shaft. The helical tooth pairing mechanism (55) includes a helical tooth plate (56), which is disposed on the front side of the upright plate (9). The helical tooth plate (56) has a helical tooth mounting hole (57) along the thickness direction. A helical tooth guide cylinder (58) is inserted through the helical tooth mounting hole (57). The middle part of the helical tooth guide cylinder (58) has a guide seat sliding hole (60). A tooth head seat (62) is slidably disposed in the guide seat sliding hole (60). The helical tooth cylinder (61) is disposed on the back side of the helical tooth guide cylinder (58). The tooth head seat (62) is connected to the piston rod of the helical tooth cylinder (61). A mounting groove (63) is opened on the front side of the tooth head seat (62). The helical tooth pairing head (64) is inserted into the mounting groove (63). The helical tooth pairing head (64) is fixed to the tooth head seat (62) by a locking screw (65) that passes radially through the tooth head seat (62). The straight tooth matching mechanism (66) includes a straight tooth plate (67), which is vertically arranged on the front of the upright plate (9). The straight tooth plate (67) has a straight tooth mounting hole (69) along the thickness direction. A straight tooth guide cylinder (70) is inserted through the straight tooth mounting hole (69). The straight tooth guide cylinder (70) has a guide head sliding hole (72) in the middle. A straight tooth matching head (75) is slidably arranged in the guide head sliding hole (72). The straight tooth cylinder (73) is arranged on the back of the straight tooth guide cylinder (70). The straight tooth matching head (75) is connected to the piston rod of the straight tooth cylinder (73). The lower centering clamp (12) includes a base (13). A support platform (16) is provided on the top surface of the base (13). Multiple claw seats (20) connected to the base (13) are equidistantly arranged on the outer side wall of the support platform (16). A guide post groove (22) is provided on the top surface of the claw seat (20). A vertical moving post (23) is slidably arranged in the guide post groove (22). A clamping claw (24) is hinged to the top of the vertical moving post (23). The top of the clamping claw (24) has claw heads (241) protruding outward at both ends. A guide plate (26) is provided on the outer end face of the claw seat (20). The end face of the guide plate (26) facing the center of the lower centering clamp (12) is the clamping limiting surface (261), and the top surface of the guide plate (26) is the releasing guiding surface (262). The outer end of the claw head (241) slides to the clamping limiting surface (261), and the claw (24) centers and clamps the shaft (1). The outer end of the claw head (241) slides to the releasing guiding surface (262), and the claw (24) releases the centering clamp on the shaft (1). The seat (13) is provided with a driving mechanism, which is used to drive the vertical column (23) to slide axially along the guide column groove (22). The support platform (16) has a tapered upper movable hole (17) and a lower movable hole (18) sequentially formed downwards on its top surface. Multiple limiting grooves (19) are formed on the wall of the lower movable hole (18). A groove (21) is formed on the top surface of the claw seat (20). The inner end of the groove (21) communicates with the upper movable hole (17), and the outer end of the groove (21) communicates with the guide column groove (22). The driving mechanism includes a lifting column (28) and a lifting assembly. The lifting column (28) is slidably disposed within the lower movable hole (18). A limiting slide bar (29) is provided on the column surface of the lifting column (28) and slides in cooperation with the limiting groove (19). An upper stud (30) is coaxially disposed on the top surface of the lifting column (28), and a sliding guide bar (30) is sleeved on the upper stud (30). A hinge seat (32) is movably installed in the upper movable hole (17). The upper stud (30) is threadedly connected to a locking nut (33) that presses the hinge seat (32) onto the lifting column (28). An inner hinge groove (34) is provided on the side wall of the hinge seat (32). An outer hinge groove (35) is provided on the side wall of the vertical column (23). A pin (36) is passed through the claw seat (20). A linkage frame (37) is rotatably installed on the pin (36). The inner end of the linkage frame (37) extends into the inner hinge groove (34) and is hinged to the hinge seat (32) through the hinge shaft. The outer end of the linkage frame (37) extends into the outer hinge groove (35) and is hinged to the vertical column (23) through the hinge shaft. The lifting assembly is used to drive the lifting column (28) to perform lifting and lowering movements.

2. The intermediate shaft quick gear-fitting hot-pressing clamp according to claim 1, characterized in that: The head of the helical tooth pair (64) is spherical.

3. The intermediate shaft quick gear-fitting hot-pressing clamp according to claim 1, characterized in that: The straight tooth head (75) has a snap-fit ​​hole (76) along the thickness direction, and the piston rod of the straight tooth cylinder (73) is screwed with a snap-fit ​​screw (74), which snaps into the snap-fit ​​hole (76).

4. The intermediate shaft quick gear-fitting hot-pressing fixture according to claim 1, characterized in that: The head of the straight tooth pair (75) is straight tooth-shaped.

5. The intermediate shaft quick gear-fitting hot-pressing clamp according to claim 1, characterized in that: The lifting assembly includes a bevel gear shaft (38), a bevel gear (43), and a cone sleeve (45). The outer end of the bevel gear shaft (38) is rotatably mounted on an outer rotating hole (15). A support seat (39) is provided on the top surface of the base (4). An inner rotating hole (40) is opened on the side wall of the support seat (39) facing the bevel gear shaft (38). The inner end of the bevel gear shaft (38) is rotatably mounted on the inner rotating hole (40). A spline hole (41) is opened on the outer end face of the bevel gear shaft (38). A [missing information - likely a component or part] is fixedly installed on the top surface of the base (4). A drive motor (42) is provided, and the spline output shaft of the drive motor (42) is splinedly connected to the spline hole (41). The bevel gear (43) is rotatably disposed on the top of the seat groove (14) and meshes with the bevel gear shaft (38). A sleeve hole (44) is provided in the middle of the bevel gear (43), and a cone sleeve (45) is inserted into the sleeve hole (44). A lifting screw hole (46) is provided in the middle of the cone sleeve (45). A lower stud (31) is coaxially disposed on the bottom surface of the lifting column (28) and threadedly connected to the lifting screw hole (46).

6. The intermediate shaft quick gear-fitting hot-pressing clamp according to claim 1, characterized in that: The upper centering mechanism includes a slide (47), which is slidably disposed on the front of the upright plate (9). A top plate (50) is vertically disposed on the slide (47), and an upper top is disposed on the bottom surface of the top plate (50). A cylinder seat (52) is disposed on the top of the upright plate (9), and a hydraulic cylinder (54) is disposed on the cylinder seat (52). The piston rod of the hydraulic cylinder (54) passes through the cylinder seat (52) and is connected to the top surface of the top plate (50).

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