A rack and pinion machining apparatus with tooth side gap compensation floating tool holder

Abstract

The application discloses rack and pinion machining equipment with tooth side gap compensation floating tool holder and belongs to the rack and pinion machining equipment field, aiming at solving the problems of difficult pitch adjustment, unable to share the clamping assembly, lack of flexible compensation mechanism, poor adaptability and insufficient machining precision in the prior art when the rack and pinion is machined. The equipment comprises a rack I, a rack II and a rack III, the rack I is provided with a movable support plate II with a clamping assembly, the clamping assembly is driven by a servo motor II to drive a bidirectional screw rod to drive a movable clamping plate to move, the movable clamping plate can be used to clamp the rack and the pinion, the rack II is provided with a movable support plate I with a machining assembly, a slider in a T-shaped groove and a compression spring can realize limit deviation compensation, a limiting plate can adjust the interval and replace an inclined version, and each servo motor is matched to realize automatic feeding and position adjustment. The equipment is used for machining the rack and pinion, can improve machining precision, adaptability and machining efficiency, and reduces equipment investment and machining cost.

Description

Technical Field

[0001] This invention relates to the field of gear and rack processing equipment, and in particular to a rack and gear processing equipment with a floating tool holder for tooth backlash compensation. Background Technology

[0002] Racks and gears are commonly used transmission components in mechanical transmissions. Their machining accuracy directly affects the stability and efficiency of mechanical transmissions, and they are widely used in machine tools, automated equipment, and construction machinery. During rack and gear machining, the workpiece must be stably clamped while ensuring consistent tooth pitch throughout the process to avoid decreased machining accuracy due to loose clamping, positioning deviations, or offset of machining components.

[0003] Existing machining equipment struggles to achieve precise pitch adjustment when processing racks, and slight deviations in the limiting structure during machining can lead to inconsistent pitch between adjacent teeth, affecting the rack's transmission performance. Machining gears requires a separate dedicated clamping and positioning mechanism, making it impossible to share a single clamping assembly with rack machining, thus increasing equipment investment costs. Furthermore, the position adjustment of machining components is mostly based on rigid connections, lacking flexible compensation mechanisms. When the limiting structure experiences slight misalignment, it cannot be corrected promptly, further impacting machining accuracy.

[0004] In addition, the installation and adjustment methods of the processing components in the existing equipment are fixed, making it difficult to flexibly adjust the processing position and limit parameters according to different specifications of rack and pinion gears. This results in poor adaptability and an inability to meet diverse processing needs. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as difficulty in adjusting tooth pitch during rack and pinion machining, incompatibility of clamping components, lack of flexible compensation mechanisms, poor adaptability, and insufficient machining accuracy. The invention proposes a rack and pinion machining device with a floating tool holder that compensates for tooth backlash.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A rack and gear machining equipment with a floating tool holder for toothed backlash compensation includes a frame I, a frame II, a frame III, a movable support plate I, a movable support plate II, a clamping assembly, and a machining assembly; The frame Ⅲ is fixed to one side of the frame Ⅰ, and the frame Ⅱ is fixed to the top of the frame Ⅲ; The movable support plate II is slidably assembled on the top of the frame I via the slide rail I and the rectangular slider I. The movable support plate II has a strip groove and a connecting hole. The clamping assembly is located in the connecting hole and is used to clamp the rack and gear; The movable support plate I is slidably assembled on the top of the frame II via the slide rail II and the rectangular slider II. The processing component is located on the top of the movable support plate I and is used to process racks and gears. The clamping component is used for the shared clamping of racks and gears. The processing component is used for precise adjustment of tooth pitch and deviation compensation.

[0007] In one possible design, the clamping assembly includes a sliding groove, a sliding block, a movable clamping plate, a bidirectional lead screw, a rectangular sliding plate, a synchronous pulley, a synchronous belt, a rotating shaft I, and a servo motor II; The sliding groove is formed on the inner wall of the connecting hole, the sliding block slides in the sliding groove, and the movable clamp is fixed between the two corresponding sliding blocks. The bidirectional lead screw is rotatably assembled between the fixed vertical plates, and the rectangular sliding plate is embedded in the rectangular clearance hole of the movable clamping plate and is threadedly engaged with the bidirectional lead screw. The servo motor II drives the rotating shaft I to rotate. The rotating shaft I is connected to the bidirectional lead screw through a synchronous pulley and a synchronous belt, thereby driving the moving clamp to move.

[0008] In one possible design, the clamping assembly further includes a rotating shaft II, a rotating disk, and a rectangular mounting block; The rotating shaft II is rotatably mounted on the inner wall of the movable support plate II. The rotating disk is fixed to one end of the rotating shaft II. The rectangular mounting block is fixed to one side of the rotating disk. The rectangular mounting block has a hole that engages with the rectangular sliding plate. The rotating shaft II drives the rotating disk to rotate, adjusting the machining position of the gear.

[0009] In one possible design, it also includes lead screw I, moving base I, and servo motor I; The lead screw I is rotatably mounted between the rectangular seats of the frame I, and the servo motor I is connected to the lead screw I via a transmission. The movable seat I is fixed to the bottom of the movable support plate II and threadedly engaged with the lead screw I. The servo motor I drives the lead screw I to rotate, thereby causing the movable support plate II to move laterally.

[0010] In one possible design, it also includes lead screw II, moving base II, support base and servo motor III; The support base is fixed to the top of the frame II, the lead screw II is rotatably assembled between the two support bases, and the servo motor III is connected to the lead screw II for transmission. The movable seat II is fixed to the bottom of the movable support plate I and threadedly engaged with the lead screw II. The servo motor III drives the lead screw II to rotate, thereby causing the movable support plate I to move laterally to adjust the processing position.

[0011] In one possible design, the processing assembly includes a guide rod, a fixed top plate, a fixed nut, a movable sliding plate, an electric push rod, a T-slot, T-slider I, T-slider II, and a compression spring; The guide rod is fixed to the top of the movable support plate I, and the fixed top plate is assembled onto the guide rod by a fixing nut. The movable sliding plate is slidably sleeved on the guide rod, and the electric push rod is fixed to the fixed top plate and is connected to the movable sliding plate in a transmission manner. The T-slot is formed at the bottom of the movable sliding plate. Both T-slide 1 and T-slide 2 slide in the T-slot, and the compression spring is located between T-slide 2 and T-slide 1.

[0012] In one possible design, the machining assembly further includes a fixing block and adjusting bolts; The fixed block is fixed to the bottom of the movable sliding plate, and the adjusting bolt is threaded through the fixed block and rotatably connected to the T-shaped slider I. Rotating the adjusting bolt can move the T-slider I, changing the pressure of the compression spring to suit different machining accuracy requirements.

[0013] In one possible design, the machining assembly further includes a mounting plate, a fixed cross plate, a limiting plate, fixing bolts, a servo motor IV, a drive shaft, and a milling cutter; The mounting plate is fixed to the bottom of the T-shaped slider II, the fixing horizontal plate is fixed to the bottom of the mounting plate, and the limiting plate is threadedly connected to the threaded groove of the fixing horizontal plate by fixing bolts. The servo motor IV is fixed to one side of the mounting plate, the drive shaft is connected to the servo motor IV, the milling cutter is fixed to the outer wall of the drive shaft, and the servo motor IV drives the milling cutter to rotate.

[0014] In one possible design, the fixed horizontal plate is fixed to both ends with limiting side plates, the top of the limiting plate has an installation groove that mates with the fixed horizontal plate, and the bottom of the limiting plate has an operating groove.

[0015] In this application, during use, the rack to be processed is placed inside the strip groove. At this time, the servo motor II can be started. The output shaft of the servo motor II drives the rotating shaft I to rotate. The rotating shaft I drives the bidirectional lead screw to rotate through the synchronous pulley and synchronous belt. The bidirectional lead screw drives the rectangular sliding plates at both ends to move laterally. At this time, the two rectangular sliding plates move closer to each other. The rectangular sliding plates drive the external moving clamping plate to move laterally. The moving clamping plate slides inside the sliding groove through the sliding block to ensure the stability of the moving clamping plate. The moving clamping plate moves inside the connecting hole to both sides of the rack to clamp the rack and ensure the stability of the rack. When machining is required, the specific position of the limiting plate is adjusted, and the tooth pitch can be changed by adjusting the distance between the limiting plate and the milling cutter. The specific operation is to unscrew the fixing bolt, which releases the braking state of the limiting plate. After adjustment, the fixing bolt is threaded through the limiting plate and screwed into the corresponding thread groove, thereby adjusting the distance between the limiting plate and the milling cutter. During machining, servo motor I is started. The output shaft of servo motor I drives lead screw I to rotate. Lead screw I drives moving seat I to move laterally. Moving seat I drives moving support plate II to move laterally. Moving support plate II drives the top rack to move laterally. One end of the rack abuts against the end of the limiting plate that extends outward. At this time, the milling cutter is located on one side of the rack. Servo motor III is started. The output shaft of servo motor III drives lead screw II to rotate. Lead screw II drives moving seat II to move laterally. Moving seat II drives moving support plate I to move laterally, which in turn drives the milling cutter to move laterally, ready for machining. Servo motor IV is started. The output shaft of servo motor IV drives the drive shaft to rotate, which in turn drives the milling cutter to rotate. The milling cutter rotates continuously and moves forward, thus machining the rack. After machining one groove, the electric push rod is started. The piston rod of the electric push rod drives the sliding plate to move upward. The sliding plate drives the mounting plate and the limit plate to move upward. At this time, servo motor I is started, and the rack position moves forward. The electric push rod is started again, and the limit plate moves to the inside of the previously machined rack. The milling cutter moves to the side of the next position to be machined. This process is repeated to complete the machining of the rack. When there is a slight deviation in the movement of the limit plate, one of the compression springs is squeezed, and the position of T-slider II is adjusted to ensure that the tooth pitch is constant. The adjusting bolts on both sides can be rotated, which drives T-slider I to move laterally. At this time, T-slider I can change the pressure of the compression spring. When gear machining is required, the gear to be machined can be placed inside the slotted hole, with one side of the gear abutting against one side of the rectangular mounting block. Servo motor II is then activated, causing the two rectangular sliding plates to move away from each other. These plates can then be inserted into the gear and into the rectangular mounting block. A rectangular hole matching the rectangular mounting block needs to be pre-machined inside the gear. The other side of the moving clamp then presses against the gear, pushing it above the rectangular mounting block for positioning. The drive motor, electrically connected to one end of the rotating shaft II, rotates the sliding block, allowing adjustment of the gear's position. The positioning plate can be replaced with an inclined version, allowing it to insert into the slot of the inclined gear, thus ensuring the tooth pitch. Servo motor I is then activated, moving the gear into the side clearance hole. The milling cutter remains positioned on the protruding side of the gear, facilitating machining.

[0016] Beneficial effects: This equipment, by setting up a clamping assembly, can achieve shared clamping of racks and gears, eliminating the need for a separate dedicated clamping mechanism and reducing equipment investment. In the clamping assembly, servo motor II drives rotating shaft I to rotate. Rotating shaft I drives a bidirectional lead screw to rotate via a synchronous pulley and synchronous belt. The bidirectional lead screw drives a rectangular sliding plate to move a movable clamping plate. The movable clamping plate slides within a sliding groove via a sliding block, ensuring stability during movement and thus achieving stable clamping of the rack. At the same time, the movable clamping plate can push the gear to the rectangular mounting block for limiting, adapting to the clamping needs of both racks and gears.

[0017] In the machining assembly, the guide rod, in conjunction with the fixing nut, allows for height adjustment of the fixed top plate. An electric push rod drives the movable sliding plate up and down, facilitating adjustment of the milling cutter's machining height to accommodate workpieces of varying thicknesses. T-slider II, T-slider I, and a compression spring within the T-slot form a flexible compensation structure. When the limiting plate exhibits slight deviations, the compression spring can adjust the position of T-slider II through elastic deformation, ensuring consistent tooth pitch. The adjusting bolt can change the compression spring's pressure to meet different machining precision requirements.

[0018] The limiting plate is connected to the threaded groove of the fixed horizontal plate by fixing bolts, which allows for easy adjustment of the distance between the limiting plate and the milling cutter, thereby changing the tooth pitch. Limiting plates with different tilt angles can also be replaced to accommodate the machining of inclined grooves in gears, improving the equipment's adaptability. Servo motor I drives lead screw I to rotate, which in turn drives the moving support plate II to move laterally, realizing the workpiece feed motion; servo motor III drives lead screw II to rotate, which in turn drives the moving support plate I to move laterally, adjusting the milling cutter's machining position. The two work together to achieve automated feeding in the machining process, improving machining efficiency.

[0019] Rotating shaft II drives the rotating disk and rectangular mounting block to rotate, thereby adjusting the machining position of the gear. This facilitates the milling cutter's machining of different positions on the gear, improving the overall comprehensiveness of gear machining. Through the coordinated operation of its components, the overall structure achieves precise machining of the rack and gear, ensuring machining accuracy while improving equipment adaptability and machining efficiency, and reducing machining costs. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural schematic diagram of a rack and gear processing equipment with a toothed backlash compensation floating tool holder proposed in this invention; Figure 2 This is a three-dimensional view of frame I and frame III in a rack and gear machining equipment with a toothed backlash compensation floating tool holder proposed in this invention; Figure 3 This is an exploded view of the movable support plate II and the bidirectional lead screw in a rack and gear machining equipment with a toothed backlash compensation floating tool holder proposed in this invention. Figure 4 This is an exploded view of the frame I and the movable support plate II in a rack and gear machining equipment with a toothed backlash compensation floating tool holder proposed in this invention; Figure 5 This is a three-dimensional view of the movable support plate I and the frame II in a rack and gear processing equipment with a toothed backlash compensation floating tool holder proposed in this invention; Figure 6 This is an exploded view of the movable support plate I and the guide rod in a rack and gear machining equipment with a toothed backlash compensation floating tool holder proposed in this invention; Figure 7 This is an exploded view of the mounting plate and servo motor IV in a rack and gear machining equipment with a toothed backlash compensation floating tool holder proposed in this invention. Figure 8 This is an exploded view of the limiting plate and the fixed cross plate in a rack and gear processing equipment with a toothed backlash compensation floating tool holder proposed in this invention.

[0021] In the diagram: 1. Frame I; 2. Frame II; 3. Frame III; 4. Movable support plate I; 5. Movable support plate II; 6. Strip hole; 7. Servo motor I; 8. Movable clamping plate; 9. Fixed support plate; 10. Rotating shaft I; 11. Synchronous pulley; 12. Synchronous belt; 13. Servo motor II; 14. Bidirectional lead screw; 15. Rectangular sliding plate; 16. Rotating disk; 17. Rotating shaft II; 18. Sliding groove; 19. Slide rail I; 20. Rectangular slider I; 21. Lead screw I; 22. Moving seat I; 23. Strip groove; 24. Connecting hole; 25. Rectangular clearance hole; 26. Rectangular mounting block; 27. Sliding block; 28. Fixed vertical plate; 29. ​​Electric 30. Push rod; 31. Fixed top plate; 32. Moving sliding plate; 33. Support base; 34. Slide rail II; 35. Rectangular slider II; 36. Lead screw II; 37. Moving seat II; 38. Milling cutter; 39. Servo motor III; 40. Fixing nut; 41. Guide rod; 42. Mounting plate; 43. T-slot; 44. Side clearance hole; 45. Drive shaft; 46. Limiting plate; 47. Fixed cross plate; 48. Servo motor IV; 49. Adjusting bolt; 50. Fixing block; 51. T-slot I; 52. T-slot II; 53. Compression spring; 54. Limiting side plate; 55. Threaded groove; 56. Fixing bolt; 57. Mounting groove; 58. Operating groove. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] In one embodiment: Refer to Figure 1-8A processing device includes a frame 1, a frame 3 fixedly mounted on one side of the frame 1, and a frame 2 fixedly mounted on the top of the frame 3. Two symmetrically arranged slide rails 19 are fixedly mounted on the top of the frame 1. Rectangular sliders 19 are slidably connected to the top of the slide rails 19. A common movable support plate 2 is fixedly mounted on the top of the two rectangular sliders 19. A strip groove 23 is formed on the top of the movable support plate 2. Connecting holes 24 are formed on both sides of the strip groove 23. A connecting strip hole 6 is formed at one end of the connecting hole 24. A clamping assembly for clamping racks and gears is provided inside the connecting hole 24. Specifically, the frame 1 is made of cast iron, the slide rails 19 are made of stainless steel, and the rectangular sliders 19 are made of wear-resistant alloy. The three are connected by bolts to ensure the stability of the connection and provide a stable foundation for subsequent workpiece movement and processing.

[0024] The clamping assembly includes a sliding groove 18 formed in the inner wall of the connecting hole 24. A sliding block 27 is slidably connected inside the sliding groove 18. A movable clamping plate 8 is fixedly installed between two corresponding sliding blocks 27. A rectangular clearance hole 25 is formed inside the movable clamping plate 8. Two symmetrically arranged fixed vertical plates 28 are fixedly installed at the bottom of the movable support plate 2. A bidirectional lead screw 14 rotatably passes through the two fixed vertical plates 28. Two symmetrically arranged nuts are threaded on the outer wall of the bidirectional lead screw 14, and the two nuts are fixedly connected to two corresponding rectangular sliding plates 15. The rectangular sliding plates 15 are fixedly installed inside the rectangular clearance hole 25. A rotating shaft 217 is rotatably connected to one inner wall of the movable support plate 2. A rotating disk 16 is fixedly installed at one end of the rotating shaft 217. A rectangular mounting block 26 is fixedly installed on one side of the rotating disk 16. One end of the rectangular mounting block 26 has a hole that engages with the rectangular sliding plate 15. Two symmetrically arranged fixed support plates 9 are fixedly installed on the bottom inner wall of the movable support plate 2. A servo motor 213 is fixedly installed on one side of one of the fixed support plates 9. The two fixed support plates 9 are rotatably connected by the same rotating shaft 110. The output shaft of the servo motor 213 is fixedly connected to one end of the rotating shaft 110. Synchronous pulleys 11 are fixedly sleeved on the outer wall of the rotating shaft 110 and the outer wall of the bidirectional lead screw 14. The outer walls of the two synchronous pulleys 11 are driven by the same synchronous belt 12. To achieve stable clamping of the rack and gear, the rack to be processed is placed inside the slot 23. At this time, the servo motor 213 is started, and the output shaft of the servo motor 213 drives the rotating shaft 110 to rotate. The rotating shaft 110 drives the bidirectional lead screw 14 to rotate through the synchronous pulley 11 and the synchronous belt 12. The bidirectional lead screw 14 drives the rectangular sliding plates 15 at both ends to move laterally. At this time, the two rectangular sliding plates 15 move closer to each other, and the rectangular sliding plates 15 drive the external moving clamping plate 8 to move laterally. The moving clamping plate 8 slides inside the sliding groove 18 through the sliding block 27 to ensure the stability of the movement of the moving clamping plate 8. The moving clamping plate 8 moves inside the connecting hole 24 to both sides of the rack to clamp the rack and ensure the stability of the rack.

[0025] Two rectangular seats are fixedly mounted on the top of the frame 1, and the same lead screw 121 is rotatably connected between the two rectangular seats. A servo motor 17 is fixedly mounted on one side of one of the rectangular seats, and the output shaft of the servo motor 17 is fixedly connected to one end of the lead screw 121. A movable seat 122 is fixedly mounted on the bottom of the movable support plate 2, and one end of the lead screw 121 is threaded through the movable seat 122. Furthermore, during processing, the servo motor 17 is activated, and the output shaft of the servo motor 17 drives the lead screw 121 to rotate. The lead screw 121 drives the movable seat 122 to move laterally, the movable seat 122 drives the movable support plate 2 to move laterally, and the movable support plate 2 drives the rack or gear at the top to move laterally, thereby achieving workpiece feeding and providing stable feed power for the processing.

[0026] Two symmetrically arranged slide rails 233 are fixedly mounted on the top of the frame 2. Two symmetrically arranged rectangular sliders 234 are slidably connected to the top of the slide rails 233. A common movable support plate 14 is fixedly mounted on the top of the four rectangular sliders 234. A processing component for machining gears and racks is provided on the top of the movable support plate 14. Specifically, the sliding fit between the slide rails 233 and the rectangular sliders 234 adopts a clearance fit to ensure the smooth movement of the movable support plate 14, avoid jamming, and ensure the accuracy of the movement of the processing component.

[0027] Two symmetrically arranged support seats 32 are fixedly installed on the top of the frame 2. The two support seats 32 are rotatably connected by the same lead screw 235. A movable seat 236 is fixedly installed on the bottom of the movable support plate 14. The lead screw 235 is threaded through the movable seat 236. A servo motor 338 is fixedly installed on one side of one of the support seats 32. The output shaft of the servo motor 338 is fixedly connected to one end of the lead screw 235. Based on this, when machining is performed, the servo motor 338 is started. The output shaft of the servo motor 338 drives the lead screw 235 to rotate. The lead screw 235 drives the movable seat 236 to move laterally. The movable seat 236 drives the movable support plate 14 to move laterally, which in turn drives the milling cutter 37 in the machining assembly to move laterally, adjusting the machining position of the milling cutter 37 so that it precisely corresponds to the machining part of the workpiece.

[0028] The processing assembly includes four guide rods 40 fixedly mounted on the top of the movable support plate 14. A fixed top plate 30 is fitted onto the outer wall of each guide rod 40. Two fixing nuts 39 are threaded onto the outer wall of each guide rod 40, located above and below the fixed top plate 30 respectively, and used to limit the movement of the fixed top plate 30. A movable sliding plate 31 is slidably fitted onto the outer wall of each guide rod 40. An electric push rod 29 is fixedly mounted on the top of the fixed top plate 30. The piston rod of the electric push rod 29 is fixedly connected to the top of the movable sliding plate 31. A T-slot 42 is formed on one side of the bottom of the movable sliding plate 31. Preferably, the electric push rod 29 is an electro-hydraulic push rod, which features large thrust and smooth operation, and can precisely control the vertical movement distance of the movable sliding plate 31, thereby precisely adjusting the processing height of the milling cutter 37 to adapt to the processing requirements of workpieces of different thicknesses.

[0029] The T-slot 42 has a sliding connection between a T-slider 251 and two T-slider 150. The two T-slider 150 are located on both sides of the T-slider 251. A compression spring 52 is provided between one side of the T-slider 251 and one side of the T-slider 150. Two symmetrically arranged fixing blocks 49 are fixedly installed at the bottom of the movable sliding plate 31. An adjusting bolt 48 is threaded through the inside of the fixing block 49. One end of the adjusting bolt 48 is rotatably connected to one side of the corresponding T-slider 150. An mounting plate 41 is fixedly installed at the bottom of the T-slider 251. A fixing cross plate 46 is fixedly installed at the bottom of the mounting plate 41. Limiting side plates 53 are fixedly installed at both ends of the fixing cross plate 46. Multiple threaded grooves 54 are opened at the bottom of the fixing cross plate 46. Furthermore, when the movement of the limit plate 45 deviates slightly, one of the compression springs 52 is squeezed, and the position of the T-shaped slider 251 is adjusted to ensure that the tooth pitch is constant. Rotating the adjusting bolts 48 on both sides can drive the T-shaped slider 150 to move laterally, thereby changing the pressure of the compression spring 52 to adapt to the needs of different processing precision.

[0030] The device also includes a limiting plate 45. The top of the limiting plate 45 is provided with a mounting groove 56 that works with the fixed horizontal plate 46. The bottom of the limiting plate 45 is provided with an operating groove 57. A fixing bolt 55 is threaded through the top inner wall of the operating groove 57. The fixing bolt 55 is threadedly connected to the threaded groove 54. A servo motor 447 is fixedly installed on one side of the mounting plate 41. The output shaft of the servo motor 447 rotates through the mounting plate 41 and is fixedly installed with a drive shaft 44. A milling cutter 37 is fixedly sleeved on the outer wall of the drive shaft 44. Specifically, the limiting plate 45 is connected to the threaded groove 54 of the fixed horizontal plate 46 via a fixing bolt 55. When adjusting the specific position of the limiting plate 45, the fixing bolt 55 is unscrewed to release the braking state of the limiting plate 45. After adjustment, the fixing bolt 55 is threaded through the limiting plate 45 and screwed into the corresponding threaded groove 54, thereby adjusting the distance between the limiting plate 45 and the milling cutter 37, and thus changing the tooth pitch. During machining, the servo motor 447 is started, and the output shaft of the servo motor 447 drives the drive shaft 44 to rotate, which in turn drives... The milling cutter 37 rotates and moves forward continuously to process the rack. After processing one groove, the electric push rod 29 is activated. The piston rod of the electric push rod 29 drives the sliding plate 31 to move upward. The sliding plate 31 drives the mounting plate 41 and the limiting plate 45 to move upward. At this time, the servo motor 17 is activated, and the rack position moves forward. The electric push rod 29 is activated again, and the limiting plate 45 moves into the inside of the previously processed rack. The milling cutter 37 moves to the side of the next position to be processed. This process is repeated to complete the processing of the rack.

[0031] Based on this, when the gear needs to be processed, the gear to be processed can be placed inside the strip hole 6. At this time, one side of the gear is pressed against one side of the rectangular mounting block 26. The servo motor 213 is started, so that the two rectangular sliding plates 15 move away from each other. The two rectangular sliding plates 15 are inserted into the gear and enter the rectangular mounting block 26. The inside of the gear needs to be pre-machined with a rectangular hole that matches the rectangular mounting block 26. At this time, the other side of the moving clamp 8 is pressed against the gear. The moving clamp 8 pushes the gear to the top of the rectangular mounting block 26 for limiting. By starting the drive motor electrically connected to one end of the rotating shaft 217, the sliding block 27 is driven to rotate, thereby adjusting the position of the gear. At the same time, the limiting plate 45 is replaced with an inclined version so that the limiting plate 45 can be inserted into the groove of the inclined gear to ensure the tooth pitch. The servo motor 17 is started, and the servo motor 17 moves the gear to the inside of the side clearance hole 43. At this time, the milling cutter 37 is always located on the side of the protruding position of the gear, which is convenient for processing the gear.

[0032] This application can be used in the field of gear and rack processing equipment, as well as in other fields applicable to this application.

[0033] In another embodiment: Reference Figure 1-8 A rack and gear machining device with a floating tool holder for tooth backlash compensation is disclosed. This device is used in the field of rack and gear machining equipment. The structure of this embodiment is basically the same as the aforementioned embodiments, except that: when machining the gear, the gear to be machined can be placed inside the slotted hole 6. At this time, one side of the gear abuts against one side of the rectangular mounting block 26. The servo motor 213 is activated, causing the two rectangular sliding plates 15 to move away from each other. The two rectangular sliding plates 15 are inserted into the gear and enter the rectangular mounting block 26. The gear interior needs to be pre-machined to fit the rectangular mounting block 26. With the matching rectangular hole, the other side of the movable clamping plate 8 abuts against the gear, and the movable clamping plate 8 pushes the gear above the rectangular mounting block 26 for limiting. By starting the drive motor electrically connected to one end of the rotating shaft 217, the sliding block 27 is rotated, thereby adjusting the position of the gear. At the same time, the limiting plate 45 is replaced with an inclined version, so that the limiting plate 45 can be inserted into the groove of the inclined gear to ensure the tooth pitch. The servo motor 17 is started, and the servo motor 17 moves the gear into the side clearance hole 43. At this time, the milling cutter 37 is always located on the side of the protruding position of the gear, which is convenient for processing the gear.

[0034] It also includes a PLC controller, which is electrically connected to servo motor I7, servo motor II13, servo motor III38, servo motor IV47 and electric push rod 29 respectively, and is used to control the coordinated operation of each component; the frame I1 is equipped with a movable support plate II5 with a clamping assembly. The clamping assembly is driven by the bidirectional lead screw 14 driven by the servo motor II13 to drive the movable clamping plate 8 to move, and can share the clamping rack and gear.

[0035] Dust covers are provided on the bidirectional lead screw 14 and slide rail I 19 to prevent machining debris from entering. Dust covers are also provided on the lead screw II 35 and slide rail II 33 to prevent machining debris from entering. This device requires regular cleaning of the dust covers and lubrication and maintenance of all sliding and rotating parts.

[0036] However, as is well known to those skilled in the art, the working principles and wiring methods of the PLC controller, servo motor I7, servo motor II13, servo motor III38, servo motor IV47 and electric actuator 29 are all conventional methods or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0037] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A rack and gear machining equipment with a floating tool holder for tooth backlash compensation, characterized in that, include: Frame I (1), Frame II (2), Frame III (3), Moving support plate I (4), Moving support plate II (5), Clamping assembly and processing assembly; The frame Ⅲ (3) is fixed to one side of the frame Ⅰ (1), and the frame Ⅱ (2) is fixed to the top of the frame Ⅲ (3); The movable support plate II (5) is slidably assembled on the top of the frame I (1) via the slide rail I (19) and the rectangular slider I (20). The top of the movable support plate II (5) is provided with a strip groove (23) and a connecting hole (24). The clamping assembly is disposed in the connecting hole (24) and is used to clamp the rack and gear; The movable support plate I (4) is slidably mounted on the top of the frame II (2) via the slide rail II (33) and the rectangular slider II (34). The processing component is located on the top of the movable support plate I (4) and is used to process racks and gears. The clamping component is used for the shared clamping of racks and gears. The processing component is used for precise adjustment of tooth pitch and deviation compensation.

2. The rack and gear machining equipment with a toothed backlash compensation floating tool holder according to claim 1, characterized in that, The clamping assembly includes a sliding groove (18), a sliding block (27), a movable clamping plate (8), a two-way lead screw (14), a rectangular sliding plate (15), a synchronous pulley (11), a synchronous belt (12), a rotating shaft I (10), and a servo motor II (13). The sliding groove (18) is opened on the inner wall of the connecting hole (24), the sliding block (27) slides with the sliding groove (18), and the movable clamp (8) is fixed between the two corresponding sliding blocks (27); The bidirectional lead screw (14) is rotatably assembled between the fixed vertical plates (28), and the rectangular sliding plate (15) is embedded in the rectangular clearance hole (25) of the movable clamping plate (8) and threadedly engaged with the bidirectional lead screw (14). The servo motor II (13) drives the rotating shaft I (10) to rotate. The rotating shaft I (10) and the bidirectional lead screw (14) are connected by a synchronous pulley (11) and a synchronous belt (12), which in turn drives the moving clamp (8) to move.

3. The rack and gear machining equipment with a toothed backlash compensation floating tool holder according to claim 2, characterized in that, The clamping assembly also includes a rotating shaft II (17), a rotating disk (16), and a rectangular mounting block (26). The rotating shaft II (17) is rotatably mounted on the inner wall of the movable support plate II (5). The rotating disk (16) is fixed to one end of the rotating shaft II (17). The rectangular mounting block (26) is fixed to one side of the rotating disk (16). The rectangular mounting block (26) has a hole that engages with the rectangular sliding plate (15). The rotating shaft II (17) drives the rotating disk (16) to rotate, adjusting the processing position of the gear.

4. The rack and gear machining equipment with a floating tool holder for toothed backlash compensation according to any one of claims 1 to 3, characterized in that, It also includes lead screw I (21), moving base I (22) and servo motor I (7); The servo motor I (7) is fixedly installed on the top side of the frame I (1), and the lead screw I (21) is rotatably assembled between the rectangular seats of the frame I (1). The servo motor I (7) and the lead screw I (21) are connected in transmission. The movable seat I (22) is fixed to the bottom of the movable support plate II (5) and threadedly engaged with the lead screw I (21). The servo motor I (7) drives the lead screw I (21) to rotate, thereby causing the movable support plate II (5) to move laterally.

5. The rack and gear machining equipment with a toothed backlash compensation floating tool holder according to claim 1, characterized in that, It also includes lead screw II (35), moving seat II (36), support seat (32) and servo motor III (38); The support base (32) is fixed to the top of the frame II (2), the lead screw II (35) is rotatably assembled between the two support bases (32), the servo motor III (38) is fixedly installed on one side of one of the support bases (32), and the output shaft of the servo motor III (38) is connected to the lead screw II (35) for transmission. The movable seat II (36) is fixed to the bottom of the movable support plate I (4) and threadedly engaged with the lead screw II (35). The servo motor III (38) drives the lead screw II (35) to rotate, thereby causing the movable support plate I (4) to move laterally to adjust the processing position.

6. The rack and gear machining equipment with a toothed backlash compensation floating tool holder according to claim 1, characterized in that, The processing components include a guide rod (40), a fixed top plate (30), a fixed nut (39), a movable sliding plate (31), an electric push rod (29), a T-slot (42), a T-slide I (50), a T-slide II (51), and a compression spring (52). The guide rod (40) is fixed to the top of the movable support plate I (4), and the fixed top plate (30) is limited and assembled on the guide rod (40) by the fixing nut (39); The movable sliding plate (31) is slidably sleeved on the guide rod (40), and the electric push rod (29) is fixed to the fixed top plate (30) and is connected to the movable sliding plate (31) in a transmission manner. The T-slot (42) is opened at the bottom of the movable sliding plate (31). T-slider I (50) and T-slider II (51) are slidably engaged with the T-slot (42). The compression spring (52) is located between T-slider II (51) and T-slider I (50).

7. The rack and gear machining equipment with a toothed backlash compensation floating tool holder according to claim 6, characterized in that, The processing assembly also includes a fixing block (49) and an adjusting bolt (48). The fixed block (49) is fixed to the bottom of the movable sliding plate (31), and the adjusting bolt (48) is threaded through the fixed block (49) and rotatably connected to the T-shaped slider I (50); Rotating the adjusting bolt (48) can move the T-shaped slider I (50) and change the pressure of the compression spring (52) to adapt to different processing accuracy requirements.

8. The rack and gear machining equipment with a toothed backlash compensation floating tool holder according to claim 6, characterized in that, The processing assembly also includes a mounting plate (41), a fixed cross plate (46), a limiting plate (45), a fixing bolt (55), a servo motor IV (47), a drive shaft (44), and a milling cutter (37). The mounting plate (41) is fixed to the bottom of the T-shaped slider II (51), the fixed horizontal plate (46) is fixed to the bottom of the mounting plate (41), and the limiting plate (45) is threadedly connected to the threaded groove (54) of the fixed horizontal plate (46) by the fixing bolt (55). The servo motor IV (47) is fixed to one side of the mounting plate (41), the drive shaft (44) is connected to the servo motor IV (47) for transmission, the milling cutter (37) is fixed to the outer wall of the drive shaft (44), and the servo motor IV (47) drives the milling cutter (37) to rotate.

9. The rack and gear machining equipment with a toothed backlash compensation floating tool holder according to claim 8, characterized in that, The fixed horizontal plate (46) is fixed at both ends with a limiting side plate (53). The top of the limiting plate (45) is provided with an installation groove (56) that cooperates with the fixed horizontal plate (46). The bottom of the limiting plate (45) is provided with an operation groove (57). The side clearance hole (43) is provided on one side of the movable support plate I (4).

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