Automatic high-precision worm gear cutting device and method

Abstract

The invention discloses an automatic high-precision worm gear cutting device and method, and belongs to the technical field of worm gear machining. The device comprises an operation table, a rotary driving module and a telescopic driving shaft, and a hob assembly used for cutting a worm gear is further arranged on the operation table; the sliding platform is arranged on the operation table between the rotary driving modules; the clamping assembly is arranged above the sliding platform in a sliding mode, the clamping assembly comprises symmetrically-arranged supporting plates, supporting rotating discs are rotationally arranged in the supporting plates, one faces of the supporting rotating discs are connected with the telescopic driving shaft, the other faces of the supporting rotating discs extend outwards to form a plurality of transition rods, and clamping discs used for clamping worm wheels are arranged at the ends of the transition rods; by means of the worm gear clamping device, the radial freedom degree and the axial freedom degree of the worm gear can be limited at the same time when the worm gear is clamped, the stability of the worm gear in the cutting process is improved, and the situation that the machining precision is reduced due to axial deviation of the worm gear is avoided.

Description

Technical Field

[0001] The invention relates to an automated high-precision worm gear cutting device and method, and belongs to the technical field of worm gear processing. Background Art

[0002] There are many styles of existing worm gears, including special-shaped worm gears, double-guide worm gears and other different types. When processing worm gears, their tooth grooves and outer surfaces need to be polished to ensure the meshing accuracy of the tooth grooves.

[0003] When processing the worm gear tooth groove, since its outer circle cannot be clamped normally, an expansion clamp is usually inserted into the inner ring of the worm gear to clamp the worm gear. The patent document with Chinese Patent No. CN115026351A discloses a worm gear clamping device, including a rotating ring, a base plate is provided under the rotating ring, and a plurality of movable blocks are provided in the rotating ring. The plurality of movable blocks are evenly distributed in a circle in the rotating ring. One side of the movable block is fixedly connected to a support rod, and the other side of the movable block is fixedly connected to a first slider. One side of the rotating ring is provided with a first movable disk, and one side of the first movable disk is fixedly connected to a plurality of second sliders. One side of the rotating ring is fixedly connected to a fixed tube, and the outer sleeve of the fixed tube is provided with a fixedly connected gear ring.

[0004] The above application clamps the worm wheel by expanding the support rod, but the clamping of the worm wheel is limited only to the radial freedom of the worm wheel. The freedom of the axial direction of the worm wheel is only achieved by the friction between the support rod and the inner ring of the worm wheel, which may cause axial deviation during the rotation of the worm wheel. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an automated high-precision worm gear cutting device and method, which solves the problem of lack of limitation of axial freedom during worm gear cutting in the prior art.

[0006] The technical problem to be solved by the present invention is achieved by adopting the following technical solution: an automated high-precision worm gear cutting device, comprising:

[0007] An operating table, on which a rotary drive module is symmetrically arranged, a telescopic drive shaft is provided on the rotary drive module, and a hob assembly for cutting the worm gear is also provided on the operating table;

[0008] A sliding platform is provided on the operating table between the rotating drive modules;

[0009] A clamping assembly is slidably arranged above the sliding platform, and the clamping assembly includes symmetrically arranged support plates, a support turntable is rotatably arranged inside the support plate, one side of the support turntable is connected to the telescopic drive shaft, and a plurality of transition rods are extended outward from the other side, and a clamping disc for clamping the worm gear is provided at the end of the transition rod;

[0010] A plurality of straight slots are provided on a surface of the clamping disc away from the transition rod, and a plurality of sliding blocks are provided on the end surface of the clamping disc so as to slide through the straight slots.

[0011] By adopting the above technical solution, the radial and axial degrees of freedom of the worm gear can be simultaneously limited when clamping the worm gear, improving the stability of the worm gear during cutting and avoiding the reduction in machining accuracy caused by axial deviation of the worm gear. The axial degree of freedom of the worm gear is limited by two symmetrical clamping plates that fit and clamp the end face of the worm gear, while the radial degree of freedom of the worm gear's inner ring is limited by sliding blocks installed on the clamping plates.

[0012] The present invention is further configured as follows: the sliding block extends an extension portion into the straight slot, a transmission screw is provided through the extension portion, one end of the transmission screw is rotatably connected to the end portion of the straight slot, and the other end extends toward the center of the clamping disk and is provided with a secondary bevel gear, the center of the clamping disk is provided with a central bevel gear meshing with the secondary bevel gear, and the central bevel gear is provided with a transmission shaft.

[0013] By adopting the above technical solution, the sliding block is controlled by the transmission screw to slide, and the outward sliding angle of the sliding block can be accurately controlled, so that the clamping force can be accurately controlled when the inner ring of the worm gear is expanded and clamped, avoiding damage to the worm gear due to excessive clamping force or loosening of the worm gear due to insufficient clamping force.

[0014] The present invention is further configured as follows: there are two transmission shafts, which are symmetrically arranged at the centers of the two clamping plates. The ends of the two transmission shafts that are farther away are both provided with drivers, and at the ends that are closer, one of the transmission shafts is provided with a connecting section one, and the connecting section one is provided with a threaded line. The other transmission shaft is provided with a connecting section two, and a threaded hole is opened inside the connecting section two for clamping the threaded line.

[0015] By adopting the above technical solution, during the worm gear clamping process, the two clamping plates move relative to each other and approach the two end faces of the worm gear, and the clamping plates fit the end faces of the worm gear. At the same time, the driver is controlled to rotate, driving the transmission screw to rotate, driving the sliding block to expand outward, so that the outer ring of the sliding block fits the inner ring of the worm gear. At the same time, the connecting section one is inserted into the thread of the connecting section two and screwed together. During the rotation process, the clamping force on the axial direction of the worm gear can be increased, and simultaneous axial and radial clamping can be achieved.

[0016] The present invention is further configured such that the outer surface of the sliding block is an arc surface concentric with the clamping disk.

[0017] By adopting the above technical solution, the fit between the sliding block and the inner ring of the worm wheel can be improved, and the clamping stability of the sliding block can be improved.

[0018] The present invention is further configured as follows: a sliding plate is slidably provided on the sliding platform, and the number of the sliding plates is two.

[0019] By adopting the above technical solution, the sliding plate is slidably arranged under the clamping plate, and the worm wheel can be supported by the sliding plate before clamping, which facilitates the clamping of the worm wheel. After the worm wheel is clamped, the two sliding plates are symmetrically arranged on the two end surfaces of the worm wheel.

[0020] The present invention is further configured as follows: an outer ring groove is opened on one side of the clamping disk close to the transition rod, a support plate is slidably inserted in the outer ring groove, one side of the support plate is inserted into the outer ring groove, and the other side is connected to the support rod, and the other end of the support rod is connected to the sliding plate.

[0021] By adopting the above technical solution, a vertical supporting force is applied to the clamping disk through the supporting plate, which can prevent the transition rod from bending and deforming due to the heavy weight of the clamped worm gear.

[0022] The present invention is further configured such that a foldable dustproof plate is provided between the sliding plate and the support plate.

[0023] By adopting this technical solution, since the worm gear cutting process generates a certain amount of metal debris, the foldable dust shield can prevent metal debris and external dust from entering the sliding platform and affecting the stability of the transmission structure. At the same time, the foldable dust shield can expand and contract with the support plate and the sliding plate, preventing interference between the support plate and the sliding plate during sliding.

[0024] The present invention is further configured as follows: the support rod is a transmission screw rod, and a knob nut is sleeved on the connection point with the sliding plate, and the knob nut is used to adjust the support height of the support rod.

[0025] By adopting the above technical solution, the transmission screw is driven up and down by the knob nut to adjust the support height of the support plate. After the support plate is inserted into the outer ring groove, the support plate is adjusted to rise so that the support plate fits into the outer ring surface of the outer ring groove and exerts a certain supporting force on it.

[0026] The present invention is further configured as follows: a pressure detector is provided at the connection point between the support rod and the supporting plate, and the pressure detector is provided with a pointer display screen.

[0027] By adopting the above technical solution, the pressure detector can display the supporting force of the pallet on the clamping plate, so that the operator can reasonably adjust the supporting force of the pallet on the clamping plate. During the rotation of the clamping plate, it can also be judged by observing the pointer display screen to determine whether the entire clamping plate has vertical shaking.

[0028] This application also relates to an automated high-precision worm gear cutting device and method, which specifically includes the following operating steps:

[0029] S1. Clamp and secure the worm gear using a clamping assembly. During the clamping process, the worm gear is first placed on a sliding plate. The sliding platform is then controlled to drive the two clamping plates to slide toward each other, so that the clamping plates and the left and right end surfaces of the worm gear fit together. During the sliding process, the driver is simultaneously controlled to drive the sliding block to expand toward the outer ring, so that the sliding block fits the inner ring surface of the worm gear, thereby achieving dual axial and radial freedom constraints.

[0030] S2. When the clamping plate clamps the worm gear, the support plate is inserted into the outer ring groove of the clamping plate. The other end of the support rod connected to the support plate is inserted into the sliding plate. After the clamping plate completes clamping the worm gear, the support height of the support plate is adjusted by rotating the knob nut to achieve vertical support for the clamping plate.

[0031] S3. Cut the worm gear by controlling the hob assembly. Observe the pointer reading on the pointer display in real time during the cutting process. If the pointer reading fluctuates greatly, it means that the clamping disk is offset in the radial direction and the transition rod is bent and deformed. It is necessary to stop cutting and repair the cutting device.

[0032] By adopting the above technical solution, the scrap rate of worm gears can be reduced, and insufficient cutting accuracy caused by large radial fluctuations during the worm gear cutting process can be prevented. The support plate can support the clamping disc, providing vertical support when the clamping disc clamps a heavy worm gear for cutting, and preventing the transition rod from bending and deforming during rotation due to the heavy weight of the worm gear.

[0033] The beneficial effects of the present invention are:

[0034] By setting up two clamping plates and cooperating with the sliding blocks slidingly set on the clamping plates, the axial and radial double degrees of freedom of the worm gear can be limited, the stability of the worm gear clamping can be improved, thereby reducing the shaking generated during the worm gear cutting process, preventing axial deviation and ensuring cutting accuracy.

[0035] By using a transmission screw to control the sliding of the sliding block and using a single center bevel gear to control the rotation of multiple sub-bevel gears, it is possible to achieve synchronous driving of multiple sliding blocks, while reducing the driving source and the workpiece cost. It can ensure that the outward sliding distance of multiple sliding blocks always remains equal, thereby preventing the occurrence of insufficient clamping force in a single direction.

[0036] The support rods and pallets installed on the sliding plate can exert an upward support force on the clamping disc. When the clamping disc clamps a heavy worm gear, the support of the support rods and pallets can prevent the transition rod from bending and deforming. Secondly, when the clamping disc drives the worm gear to rotate for cutting, the support force between the pallet and the clamping disc can be displayed in real time through the pointer display. When the clamping disc sinks, the support force between the pallet and the clamping disc will increase. The pointer display can monitor the support force in real time and remind the staff to maintain the clamping disc and the transition rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0038] Figure 2 It is a schematic diagram of the three-dimensional structure of the sliding platform and a single clamping assembly of the present invention;

[0039] Figure 3 This is a schematic diagram of the disassembled structure of the clamping plate and the back of the supporting block of the present invention;

[0040] Figure 4 This is a schematic diagram of the front disassembled structure of the clamping disc and the clamping block of the present invention;

[0041] Figure 5 This is a schematic diagram of the three-dimensional structure of the center bevel gear and the auxiliary bevel gear when the connection section 2 is assembled;

[0042] Figure 6 This is a schematic diagram of the three-dimensional structure of the assembly connection section of the central bevel gear and the auxiliary bevel gear of the present invention;

[0043] Figure 7 It is a schematic diagram of the three-dimensional structure of the worm gear of the present invention;

[0044] Figure 8 is a schematic diagram of the three-dimensional structure of a worm gear in another embodiment of the present invention;

[0045] Figure 9 It is a schematic diagram of the three-dimensional structure of the operating table of the present invention.

[0046] In the figure: 1. operating table; 2. rotary drive module; 3. telescopic drive shaft; 4. hob assembly; 5. sliding platform; 6. clamping assembly; 601. support plate; 602. support turntable; 603. transition rod; 604. clamping plate; 6041. straight slot; 6042. outer ring groove; 6043. snap-on slot; 605. sliding block; 6051. extension; 606. transmission screw; 607. secondary bevel gear; 608. center bevel gear; 609. transmission shaft; 610. driver; 611. connecting section 1; 612. connecting section 2; 7. support plate; 8. pressure detector; 801. pointer display; 9. sliding plate; 10. folding dustproof plate; 11. knob nut; 12. support rod; 13. worm gear; 14. side straight slot. DETAILED DESCRIPTION

[0047] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further explained below with reference to specific illustrations.

[0048] like Figure 1 As shown, an automated high-precision worm gear cutting device includes an operating table 1, a sliding platform 5 mounted on the operating table 1, a clamping assembly 6 mounted on the sliding platform 5, and a hob assembly 4. Rotational drive modules 2 are symmetrically mounted at both ends of the operating table 1. A telescopic drive shaft 3 is mounted on the rotational drive module 2. The telescopic drive shaft 3 can rotate and retract under the control of the rotational drive module 2.

[0049] The sliding platform 5 controls the left and right lateral movement of the clamping assembly 6. Two clamping assemblies 6 are symmetrically arranged on the sliding platform 5. The two clamping assemblies 6 move in opposite directions, clamping the worm gear 13 between them. The rotation drive module 2 controls the rotation of the clamping disk 604, driving the worm gear 13. The hob assembly 4 then cuts the clamped worm gear 13. The clamping assemblies 6 can clamp the worm gear 13 with both radial and axial degrees of freedom, improving the stability of the clamping.

[0050] Specifically, such as Figure 1 and Figure 2 As shown, the clamping assembly 6 includes a symmetrically arranged support plate 601, and a support turntable 602 is rotatably arranged inside the support plate 601. One side of the support turntable 602 is connected to the telescopic drive shaft 3, and a plurality of transition rods 603 extend outward from the other side. The telescopic drive shaft 3 can be telescoped during the sliding process of the support plate 601, and a clamping disk 604 for clamping the worm gear 13 is provided at the end of the transition rod 603.

[0051] Two clamping plates 604 align with the end faces of the worm gear 13, achieving axial clamping of the worm gear 13. Rollers are arranged in an evenly spaced array circumferentially between the support disc 602 and the support plate 601 to improve transmission efficiency. In this embodiment, four transition rods 603 are provided, each secured to the support disc 602 and the clamping plates 604 at its ends, enabling transmission.

[0052] The sliding platform 5 serves as the support module and lateral displacement control module for the entire clamping assembly 6. It includes two bidirectional slide rails. Two screws are coaxially arranged in the middle of the slide rails as transmission components. The two screws are rotatably connected at the ends closest to each other, and a support platform is installed at the connection point. The other ends are respectively mounted with drive motors, which control rotation. Each screw is equipped with a mounting platform that can slide synchronously with the rotation of the screws. The support plate 601 is fixed to the mounting platform by bolts. In this embodiment, the drive structure of the sliding platform 5 can also be driven by components such as electric cylinders and oil cylinders.

[0053] The hob assembly 4 serves as a cutting module and includes a hob for cutting the worm gear 13, a fixed platform for fixing the hob, and a drive component for driving the hob to rotate. The fixed platform is mounted on the operating table 1 via a slide rail, and the hob is vertically mounted on the fixed platform via a rotating shaft.

[0054] Further, such as Figure 3 and Figure 4 As shown, a plurality of straight slots 6041 are provided on one surface of the clamping disk 604 away from the transition rod 603, and a plurality of sliding blocks 605 are slidingly provided on the end surface of the clamping disk 604 through the straight slots 6041. The sliding blocks 605 extend an extension portion 6051 into the straight slots 6041, and a transmission screw 606 is provided through the extension portion 6051. One end of the transmission screw 606 is rotatably connected to the end of the straight slot 6041, and the other end extends toward the center of the clamping disk 604 and is provided with a secondary bevel gear 607. A central bevel gear 608 meshing with the secondary bevel gear 607 is provided in the center of the clamping disk 604, and the central bevel gear 608 is provided with a transmission shaft 609.

[0055] By controlling the rotation of the transmission shaft 609, the central bevel gear 608 is driven to rotate, thereby driving the several meshing secondary bevel gears 607 to rotate, causing the transmission screw 606 to rotate. The extension portion 6051 of the sliding block 605 extending into the straight slot 6041 is threadedly engaged with the transmission screw 606. During the rotation of the transmission screw 606, the sliding block 605 can move along the axial direction of the transmission screw 606. That is, under the rotation of the transmission shaft 609, the sliding block 605 can be controlled to slide along the straight slot 6041 to achieve expansion or contraction. When clamping the worm gear 13, by controlling the expansion of the sliding block 605, the outer arc surface of the sliding block 605 is abutted against the inner ring surface of the worm gear 13 and outward pressure is applied thereto, thereby limiting the radial degree of freedom of the worm gear 13. In this embodiment, there are three sliding blocks 605. These three sliding blocks 605 fit the inner ring of the worm gear 13, creating a stable triangular fulcrum structure. The outer surface of the sliding block 605 is a circular arc surface concentric with the clamping plate 604. This arcuate outer surface improves the fit between the sliding block 605 and the inner ring of the worm gear 13, thereby enhancing the clamping stability of the sliding block 605.

[0056] On the other hand, by controlling the sliding block 605 to slide through the screw rod, the outward sliding angle of the sliding block 605 can be accurately controlled, so that the clamping force can be accurately controlled when the inner ring of the worm gear 13 is expanded and clamped, avoiding damage to the worm gear 13 due to excessive clamping force or loosening of the worm gear 13 due to insufficient clamping force.

[0057] In this embodiment, the clamping plate 604 can clamp various worm gear 13 structures, such as Figure 7 As shown, the inner ring of the worm wheel 13 is provided with a stepped surface. At this time, when the clamping plate 604 clamps the worm wheel 13, the axial limitation is achieved by the clamping plate 604 fitting with the stepped surface of the inner ring of the worm wheel 13, and the sliding block 605 fits with the inner ring surface with the smallest aperture of the worm wheel 13 to achieve radial limitation.

[0058] like Figure 8 As shown, the inner ring of the worm wheel 13 is only provided with one opening. At this time, when the clamping plate 604 clamps the worm wheel 13, the axial limitation is achieved by the clamping plate 604 fitting with the two end faces of the worm wheel 13, and the sliding block 605 fits with the inner ring surface of the middle opening of the worm wheel 13 to achieve radial limitation.

[0059] Further, such as Figure 4 As shown, a through hole for mounting the transmission shaft 609 is opened in the center of the clamping disk 604, and snap-fit grooves 6043 for mounting the secondary bevel gear 607 are opened at equal intervals on the outer ring of the through hole. The secondary bevel gear 607 is fixed and limited by the snap-fit grooves 6043 and rotates in the snap-fit grooves 6043.

[0060] like Figure 5 and Figure 6 As shown, there are two transmission shafts 609, symmetrically positioned at the centers of the two clamping plates 604. A driver 610 is provided at the distal ends of each transmission shaft 609. At the proximal end, one transmission shaft 609 is provided with a first connecting section 611 provided with a threaded thread, while the other transmission shaft 609 is provided with a second connecting section 612, which has a threaded hole for engaging the threaded thread. In this embodiment, the driver 610 is specifically a servo motor, which drives the transmission shaft 609 to rotate.

[0061] When the two clamping plates 604 clamp the worm gear 13, they are driven to move toward each other through the sliding platform 5, and the clamping plates 604 at the left and right ends of the worm gear 13 gradually approach each other. At this time, the connecting section 1 611 and the connecting section 2 612 are first docked, and the drive shaft 609 is driven to rotate by the driver 610, so that the connecting section 1 611 is rotated to the connecting section 2 612. When the two clamping plates 604 are in contact with the left and right end faces of the worm gear 13, the drive shaft 609 continues to rotate. The threaded engagement and locking can increase the axial clamping force of the clamping plates 604 on the worm gear 13.

[0062] Secondly, two sliding plates 9 are provided on the sliding platform 5 for supporting the worm gear 13 before clamping the worm gear 13 .

[0063] In another embodiment, Figure 9 As shown, an outer ring groove 6042 is opened on one side of the clamping plate 604 close to the transition rod 603, and a support plate 7 is slidably inserted into the outer ring groove 6042. One side of the support plate 7 is inserted into the outer ring groove 6042, and the other side is connected to the support rod 12. The other end of the support rod 12 is connected to the sliding plate 9.

[0064] Specifically, side slide grooves are provided on either side of the sliding platform 5, into which the ends of the sliding plate 9 slide and engage. Similarly, the folding dust shield 10, disposed between the sliding plate 9 and the support plate 601, is also engaged via the side slide grooves. Before clamping the worm gear 13, the sliding plates 9 can also provide some support for the worm gear 13, facilitating clamping. After the worm gear 13 is clamped, the two sliding plates 9 are symmetrically positioned at the two end surfaces of the worm gear 13.

[0065] The support plate 7 is fixed to the sliding plate 9. The support rod 12 is specifically a screw rod. The connection point between the support rod 12 and the sliding plate 9 is equipped with a knob nut 11. The knob nut 11 is used to adjust the support height of the support rod 12. The knob nut 11 drives the screw rod up and down to adjust the support height of the support plate 7. After the support plate 7 is inserted into the outer ring groove 6042, the support plate 7 is raised so that it contacts the outer ring surface of the outer ring groove 6042 and exerts a certain supporting force on it.

[0066] A pressure detector 8 is provided at the connection point between the support rod 12 and the support plate 7. The pressure detector 8 is provided with a pointer display screen 801. The pressure detector 8 can display the supporting force of the support plate 7 on the clamping plate 604, so that the operator can reasonably adjust the supporting force of the support plate 7 on the clamping plate 604. During the rotation of the clamping plate 604, the operator can also determine whether the entire clamping plate 604 is shaking vertically by observing the pointer display screen 801, thereby realizing quality monitoring of the cutting process.

[0067] When the knob nut 11 rotates, the screw rod itself does not rotate, but is vertically raised or lowered by the threaded feed between the knob nut 11 and the screw rod. After the support plate 7 is inserted into the outer ring groove 6042, the knob nut 11 is rotated, causing the support rod 12 to drive the support plate 7 upward. The inner arc surface of the support plate 7 and the inner wall surface of the outer ring groove 6042 are in contact with each other and exert an upward supporting force on them. During the nut knob turning process, the pressure between the support plate 7 and the outer ring groove 6042 can be accurately measured by the pressure detector 8, thereby controlling the support force of the support plate 7 on the clamping plate 604, and minimizing the friction between the support plate 7 and the outer ring groove 6042 while ensuring the support of the clamping plate 604.

[0068] On the other hand, since the reading of the pressure detector 8 is constant after the initial adjustment of the support plate 7, when the transition rod 603 is bent and deformed, causing the clamping disk 604 to have a radial offset during rotation, the pressure between the support plate 7 and the outer ring groove 6042 will fluctuate, thereby reminding the operator to perform maintenance and adjustment on the clamping disk 604.

[0069] The foldable dust shield 10 prevents metal debris and external dust from entering the sliding platform 5 and affecting the stability of the transmission structure, as the cutting process of the worm gear 13 generates a certain amount of metal debris. The foldable dust shield 10 can also be used to prevent the metal debris and external dust from entering the sliding platform 5 and affecting the stability of the transmission structure. At the same time, the foldable dust shield 10 can be expanded and contracted along with the support plate 601 and the sliding plate 9, preventing interference between the support plate 601 and the sliding plate 9 during the sliding process.

[0070] This application also relates to an automated high-precision worm gear cutting device and method, which specifically includes the following steps:

[0071] S1. The worm gear 13 is clamped and fixed by the clamping assembly 6. During the clamping process, the worm gear 13 is first placed on the sliding plate 9. Then, the sliding platform 5 is controlled to drive the two clamping plates 604 to slide toward each other, so that the clamping plates 604 and the left and right end surfaces of the worm gear 13 are in contact with each other. During the sliding process, the driver 610 is simultaneously controlled to drive the sliding block 605 to expand toward the outer ring, so that the sliding block 605 is in contact with the inner ring surface of the worm gear 13, thereby achieving dual axial and radial freedom limitation;

[0072] S2. While the clamping plate 604 is clamping the worm gear 13, the support plate 7 is simultaneously inserted into the outer ring groove 6042 of the clamping plate 604. The other end of the support rod 12 connected to the support plate 7 is plugged into the sliding plate 9. After the clamping plate 604 completes clamping the worm gear 13, the support height of the support plate 7 is adjusted by rotating the knob nut 11 to achieve vertical support for the clamping plate 604.

[0073] S3. Cut the worm gear 13 by controlling the hob assembly 4. During the cutting process, observe the pointer reading on the pointer display screen 801 in real time. If the pointer reading fluctuates greatly, it means that the clamping disk 604 is radially offset and the transition rod 603 is bent and deformed. It is necessary to stop cutting and repair the cutting device.

[0074] The above-described processing method can reduce the defective rate of the worm gear 13 and prevent insufficient cutting accuracy due to large radial fluctuations during the cutting process of the worm gear 13. The operator observes the reading on the pointer display screen 801 in real time and promptly stops cutting if the pointer reading continues to fluctuate significantly, and inspects and maintains the clamping assembly 6.

[0075] Working principle:

[0076] The worm gear 13 is first supported and placed on the sliding platform 5 by two sliding plates 9. By controlling the clamping components 6 at both ends of the sliding platform 5 to approach the worm gear 13, the drive shaft 609 is controlled to rotate by the driver 610, and the central bevel gear 608 drives the auxiliary bevel gear 607 to rotate, so that the transmission screw 606 rotates in the straight slot 6041, thereby pushing the extension 6051 engaged with it, driving the sliding block 605 to expand outward, and the sliding block 605 is in contact with the inner ring of the worm gear 13. During this process, due to the rotation of the transmission shaft 609, the transmission shaft 609 on the left and right sides of the worm gear 13 is respectively connected with the connecting section 1 611 and the connecting section 2 612. After the connecting section 1 611 and the connecting section 2 612 are threadedly engaged, they gradually approach each other, further driving the clamping plate 604 to approach the end face of the worm gear 13, and clamping the two end faces of the worm gear 13 is achieved through thread transmission. At the same time, the sliding block 605 is fitted with the inner ring of the worm gear 13 to achieve radial clamping of the worm gear 13.

[0077] After the worm gear 13 is clamped, by installing a support plate 7 and a pressure detector 8 on the clamping disc 604, the clamping condition of the worm gear 13 during processing can be monitored in real time to prevent deformation of the clamping assembly 6 during processing of the worm gear 13.

[0078] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art will appreciate that the present invention is not limited to the foregoing embodiments and that various modifications and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such modifications and improvements are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automated high-precision worm gear cutting device, characterized in that: include: An operating table (1), wherein a rotation drive module (2) is symmetrically arranged on the operating table (1), a telescopic drive shaft (3) is arranged on the rotation drive module (2), and a hob assembly (4) for cutting a worm gear (13) is also arranged on the operating table (1); A sliding platform (5) is provided on the operating table (1) between the rotary drive modules (2); A clamping assembly (6) is slidably arranged above the sliding platform (5), and the clamping assembly (6) includes a symmetrically arranged support plate (601), a support turntable (602) is rotatably arranged inside the support plate (601), one side of the support turntable (602) is connected to the telescopic drive shaft (3), and the other side extends outward from a plurality of transition rods (603), and the end of the transition rod (603) is provided with a clamping disk (604) for clamping the worm gear (13); Among them, a plurality of straight slots (6041) are provided on a surface of the clamping disc (604) away from the transition rod (603), and a plurality of sliding blocks (605) are slidably provided on the end surface of the clamping disc (604) through the straight slots (6041).

2. The automated high-precision worm gear cutting device according to claim 1, characterized in that: The sliding block (605) extends an extension portion (6051) into the straight slot (6041), and a transmission screw (606) is provided through the extension portion (6051). One end of the transmission screw (606) is rotatably connected to the end of the straight slot (6041), and the other end extends toward the center of the clamping disk (604) and is provided with a secondary bevel gear (607). The center of the clamping disk (604) is provided with a central bevel gear (608) that meshes with the secondary bevel gear (607), and the central bevel gear (608) is provided with a transmission shaft (609).

3. The automated high-precision worm gear cutting device according to claim 2, characterized in that: There are two transmission shafts (609), which are symmetrically arranged at the centers of the two clamping disks (604). The ends of the two transmission shafts (609) that are farther away are both provided with drivers (610). The ends that are closer to each other are provided with a connecting section 1 (611) on one of the transmission shafts (609), and a threaded line is provided on the connecting section 1 (611). The other transmission shaft (609) is provided with a connecting section 2 (612), and a threaded hole for clamping the threaded line is opened inside the connecting section 2 (612).

4. The automated high-precision worm gear cutting device according to claim 1, characterized in that: The outer surface of the sliding block (605) is an arc surface concentric with the clamping disk (604).

5. The automated high-precision worm gear cutting device according to claim 1, characterized in that: A sliding plate (9) is slidably arranged on the sliding platform (5), and the number of the sliding plates (9) is two.

6. The automated high-precision worm gear cutting device according to claim 5, characterized in that: An outer ring groove (6042) is provided on one side of the clamping disk (604) close to the transition rod (603), and a support plate (7) is slidably inserted into the outer ring groove (6042). One side of the support plate (7) is inserted into the outer ring groove (6042), and the other side is connected to the support rod (12), and the other end of the support rod (12) is connected to the sliding plate (9).

7. The automated high-precision worm gear cutting device according to claim 1, characterized in that: A folding dustproof plate (10) is provided between the sliding plate (9) and the supporting plate (601).

8. The automated high-precision worm gear cutting device according to claim 5, characterized in that: The support rod (12) is a transmission screw rod (606), and a knob nut (11) is sleeved on the connection point with the sliding plate (9). The knob nut (11) is used to adjust the support height of the support rod (12).

9. The automated high-precision worm gear cutting device according to claim 8, characterized in that: A pressure detector (8) is provided at the connection point between the support rod (12) and the supporting plate (7), and the pressure detector (8) is provided with a pointer display screen (801).

10. An automated high-precision worm gear cutting method, specifically applied to the worm gear cutting device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. The worm wheel (13) is clamped and fixed by the clamping assembly (6). During the clamping process, the worm wheel (13) is first placed on the sliding plate (9), and then the sliding platform (5) is controlled to drive the two clamping plates (604) to slide toward each other, so that the clamping plates (604) and the left and right end surfaces of the worm wheel (13) fit each other. During the sliding process, the driver (610) is simultaneously controlled to drive the sliding block (605) to expand toward the outer ring, so that the sliding block (605) fits the inner ring surface of the worm wheel (13), thereby realizing the axial and radial double degree of freedom limitation; S2. When the clamping disc (604) clamps the worm gear (13), the support plate (7) is inserted into the outer ring groove (6042) of the clamping disc (604). The other end of the support rod (12) connected to the support plate (7) is plugged into the sliding plate (9). After the clamping disc (604) completes the clamping of the worm gear (13), the support height of the support plate (7) is adjusted by rotating the knob nut (11) to achieve vertical support for the clamping disc (604). S3. Cut the worm wheel (13) by controlling the hob assembly (4). During the cutting process, the pointer reading on the pointer display screen (801) is observed in real time. If the pointer reading fluctuates greatly, it means that the clamping disc (604) is offset in the radial direction and the transition rod (603) is bent and deformed. It is necessary to stop cutting and repair the cutting device.

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