Gear end face chamfering equipment

Abstract

The invention discloses gear end face chamfering equipment, which relates to the technical field of gear edge milling and comprises a lathe bed, an edge milling machine and a quick clamp. The quick-mounting clamp comprises a screw mechanism, an upper clamp and a lower clamp, and the upper clamp and the lower clamp are the same in structure and are symmetrically arranged. The upper clamp comprises a mounting part, a rotating part and an adjustable clamping block part, the adjustable clamping block part is provided with a plurality of sliding parts which are annularly and uniformly distributed, each sliding part is rotationally provided with a positioning clamping block, and the positioning clamping blocks of the upper clamp and the lower clamp are arranged in a staggered manner. The screw mechanism drives the upper clamp and the lower clamp to move reversely so as to clamp or loosen a workpiece. The adjustable clamping block part drives the sliding piece to synchronously slide in the radial direction through the gear shifting disc, meanwhile, the positioning clamping block automatically rotates in the moving process through meshing of the rack and the angle changing gear, and therefore the taper of the clamping cone is changed so as to adapt to gears with different inner diameters, rapid centering clamping of the gear is achieved, adjustment is convenient, positioning precision is high, and machining precision is high. And the chamfering machining efficiency and quality are obviously improved.

Description

Technical Field

[0001] This invention relates to the field of gear milling technology, specifically a gear end face chamfering device. Background Technology

[0002] In the field of gear machining, the chamfering process of gear end face is an important step to remove burrs, improve meshing performance and prevent stress concentration. Traditional gear chamfering usually uses manual or semi-automatic clamps to clamp the gear, such as common three-jaw chucks or elastic expansion sleeve clamps. Although they can achieve a certain centering function, they have shortcomings.

[0003] First, each gear needs to be individually aligned, a cumbersome clamping process that is time-consuming and inefficient, making it difficult to meet mass production demands. Second, when machining gears with different inner diameters, different sized chucks or expansion sleeves need to be replaced, or even the entire fixture set needs to be replaced, significantly increasing production preparation time and reducing equipment versatility. Furthermore, some fixtures are prone to causing localized damage to the inner ring or end face of the gear during clamping, affecting gear quality. Existing automated fixtures are complex in structure, costly, and struggle to simultaneously guarantee rapid and accurate axial and radial positioning.

[0004] Therefore, there is a need to develop a chamfering fixture that can quickly clamp gears and adapt to gears with different inner diameters. Summary of the Invention

[0005] The purpose of this invention is to provide a gear end face chamfering device to solve the problems raised in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a gear end face chamfering device, comprising a bed, a milling machine, and a quick-release fixture, wherein the milling machine is disposed within the bed, and the quick-release fixture comprises a screw mechanism, an upper fixture, and a lower fixture, wherein the screw mechanism is installed within the bed;

[0007] The upper clamp includes a mounting part, a rotating part, and an adjustable locking block part. The mounting part is mounted on a screw mechanism. The rotating part is connected to the mounting part. The rotating part includes a sliding plate. The adjustable locking block part includes a plurality of sliding components. The plurality of sliding components are evenly distributed in a ring on the sliding plate. Each sliding component is rotatably mounted with a positioning locking block.

[0008] The structure and arrangement of the lower clamp are the same as those of the upper clamp. The upper and lower clamps are symmetrically arranged, with several positioning blocks in the upper clamp interleaved. The operator or automated robot places the gear to be chamfered above the lower clamp. At this time, the tops of the positioning blocks on the lower clamp converge towards the central axis, forming a discrete frustum-shaped positioning surface. When the bottom inner edge of the workpiece contacts the inclined surface of the positioning blocks on the lower clamp, because all the positioning blocks are evenly distributed in a ring and have the same taper, they will generate a centripetal constraint force on the bottom inner edge of the workpiece. Under its own weight and slight manipulation by the operator, the bottom inner edge of the workpiece will automatically slide down along the inclined surface of the positioning blocks until the central axis of the bottom inner edge of the workpiece coincides with the central axis of the lower clamp. The lower clamp completes the rapid initial positioning of the bottom of the workpiece.

[0009] The control system restarts the first motor, driving the lifting arm of the upper clamp downwards and the lifting arm of the lower clamp upwards, bringing the upper and lower clamps closer together. Simultaneously, the control system activates two second motors in both clamps to rotate and adjust them, preventing collisions between the positioning blocks during closing. The evenly distributed, ring-shaped positioning blocks on the upper clamp gradually insert into the annular gaps between the positioning blocks on the lower clamp. The staggered tooth structure ensures that the upper and lower positioning blocks interlock without interference during closing. When the upper and lower clamps close to the set position, the inclined surfaces of several positioning blocks on the upper clamp are in close contact with the inner edge of the workpiece's top ring. The positioning blocks of the upper clamp also constrain the central axis of the workpiece's inner top ring to coincide with the main axis of the equipment. At this point, the gear is simultaneously gripped from both ends by the two "cones" of the upper and lower clamps, achieving complete centering and axial clamping. This double-cone clamping method not only provides high centering accuracy but also ensures uniform contact, effectively reducing clamping deformation.

[0010] Furthermore, a circular hole is provided in the middle of the sliding plate, and rectangular grooves are evenly distributed in a ring on the sliding plate. The sliding component is slidably installed in the rectangular grooves. The adjustable locking block includes a core column and a gear shifting plate. The core column is disposed in the circular hole of the sliding plate, and the gear shifting plate is located below the sliding plate and is rotatably installed on the core column.

[0011] Each sliding component has a rivet at its bottom, and a slender groove is formed below each rectangular slot on the gear shift plate, with the rivet slidingly positioned within the slender groove. When gears with different inner ring diameters need to be machined, the operator does not need to change the fixture. Instead, the operator quickly adjusts the radial position and tilt angle of the positioning block using the adjustable locking block. The operator loosens the conical top bolt, causing the cone at its top to move out of the current rivet hole on the core column, releasing the circumferential lock on the gear shift plate. Then, the operator moves the head of the conical top bolt, and the moving force drives the gear shift plate to rotate around the core column. As the gear shift plate rotates, the sidewall of each slender groove pushes the rivet at the bottom of the corresponding sliding component, forcing the sliding component to slide synchronously along the rectangular groove on the sliding plate in a direction away from or towards the axis. The sliding amount of all sliding components is completely consistent, ensuring the concentricity of the annular array.

[0012] Furthermore, there is an included angle between the elongated groove and the rectangular groove, and a threaded hole is provided in the gear shift disc, which extends from the outer ring of the gear shift disc to the inner ring. A conical bolt is threaded into the threaded hole, and several conical holes are provided on the core column, which mate with the top of the conical bolt.

[0013] Furthermore, the adjustable locking block also includes several racks and an equal number of angle-shifting gears. Each positioning locking block is coaxially connected to at least one angle-shifting gear at the junction with the sliding member. The racks are mounted on the sliding plate and mesh with the angle-shifting gears. As the sliding member moves radially, the positioning locking blocks mounted on the sliding member move accordingly. The angle-shifting gears coaxially connected to the rotating shaft of the positioning locking block mesh with the racks fixed on the sliding plate, forcing the angle-shifting gears to roll on the racks, thereby causing the positioning locking blocks themselves to rotate.

[0014] When the sliding component slides outward, the top of the positioning block tilts inward, making the cone angle of the resulting cone larger and the shape smoother, which can clamp gears with larger inner diameters. Conversely, when the sliding component slides inward, the top of the positioning block retracts inward, making the cone angle smaller and the shape sharper, which can clamp gears with smaller inner diameters. After adjustment, tighten the cone top bolt so that the cone top re-enters the corresponding nail hole on the core column, thus locking the current adjustment state.

[0015] Furthermore, the screw mechanism includes a platform installed in the bed. Two guide rail columns are mounted on the platform, and a double-ended screw is vertically rotatably mounted in each guide rail column. The bottom of the double-ended screw penetrates the platform and is connected to a sprocket. A chain connects the two sprockets, and a first motor is connected to the bottom of one of the sprockets. When the first motor is powered on and started, its output shaft drives one of the connected sprockets to rotate. This sprocket transmits power synchronously to the other sprocket via the chain, achieving equal speed and same direction rotation of the two sprockets, and causing the two double-ended screws to rotate synchronously.

[0016] Furthermore, the mounting section includes two fixtures, which are fixed together by bolts and nuts. One fixture is connected to a pair of lifting arms, which are slidably connected to two guide rail columns. Each lifting arm has a threaded hole at its end away from the fixture, and this threaded hole is screwed to a double-ended screw. The upper and lower threads of each double-ended screw rotate in opposite directions. The lifting arm of the upper fixture engages with the upper thread of the double-ended screw, while the lifting arm of the lower fixture engages with the lower thread. When the double-ended screw rotates, the two lifting arms move in opposite directions along the guide rail columns under the action of the threads. The lifting arm of the upper fixture moves upward, and the lifting arm of the lower fixture moves downward. The upper and lower fixtures separate until they are separated to a sufficient distance to accommodate the gear to be processed. At this point, the first motor stops to make room for the gear.

[0017] Furthermore, the rotating part includes a second motor and a flange. The second motor is installed between a pair of machine fixtures, and the flange is rotatably installed between the pair of machine fixtures. The motor shaft of the second motor is connected to the flange. After clamping and adjustment are completed, the two second motors in the upper and lower fixtures start synchronously. Through transmission components such as the flange, shallow cover, and sliding plate, they drive the entire quick-set fixture and the workpiece firmly clamped in the center to rotate stably around the main axis of the equipment. The milling machine inside the bed starts, and its cutting tool feeds according to the preset chamfering trajectory to perform precise chamfering on the end face of the rotating gear.

[0018] Furthermore, the rotating part also includes a shallow cover and a protective shell. The end of the flange away from the second motor is connected to the shallow cover. The shallow cover is installed on the sliding plate and wraps around the outside of the gear shift disc. A side sliding groove for the conical top bolt to move is opened on one side of the shallow cover. The protective shell is installed on the side of the sliding plate away from the shallow cover. A through groove for the positioning block to move is opened on the protective shell. A dustproof cloth is also provided in the through groove. The positioning block passes through the dustproof cloth.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. Employing a symmetrical and staggered double-conical clamping structure, the upper and lower sets of positioning blocks simultaneously apply centripetal constraints from both ends of the gear's inner ring. Because the positioning blocks are evenly distributed in a ring with a consistent taper, the gear automatically slides along the conical surface under its own weight and clamping force, aligning its inner ring's central axis with the machine's main shaft axis, eliminating the need for manual alignment. This simple and quick operation significantly reduces auxiliary time and effectively ensures consistent chamfer dimensions and processing quality.

[0021] 2. Through the cooperation of the gear shifting plate, slender slots, and rivets, the synchronous radial movement of all sliding parts and positioning blocks is achieved. Utilizing the meshing transmission of the rack and pinion gears, the positioning blocks automatically rotate during radial movement, thereby synchronously changing the taper of the clamping cone and completing the adaptation adjustment for gears with different inner ring diameters. This greatly improves equipment utilization and reduces tooling costs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall appearance and structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the overall internal structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the quick-assembly fixture part of the present invention;

[0025] Figure 4 This is a partial structural schematic diagram of the quick-assembly fixture of the present invention;

[0026] Figure 5 This is a schematic diagram of the toothed embedding structure of the positioning block of the present invention;

[0027] Figure 6 This is a schematic diagram of the internal structure of the protective shell of the present invention;

[0028] Figure 7 This is a schematic diagram of the internal structure of the shallow cover of the present invention;

[0029] Figure 8 This is a schematic diagram of the split structure of the adjustable card block part of the present invention.

[0030] In the diagram: 1. Bed; 2. Milling machine; 3. Quick-release clamp; 4. Table; 5. Guide rail column; 6. Double-ended screw; 7. Sprocket; 8. Chain; 9. First motor; 10. Upper clamp; 11. Lower clamp; 12. Lifting arm; 13. Machine fixture; 14. Second motor; 15. Flange; 16. Shallow cover; 17. Protective shell; 18. Sliding plate; 19. Gear shifter; 20. Core column; 21. Conical top bolt; 22. Rack; 23. Sliding component; 24. Rivet; 25. Angle gear; 26. Positioning block; 27. Nail hole; 28. Side slide groove. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example: Figures 1-8 As shown, the present invention provides a technical solution: a gear end face chamfering device, including a bed 1, a milling machine 2, and a quick-assembly fixture 3. The milling machine 2 is disposed inside the bed 1. The quick-assembly fixture 3 includes a screw mechanism, an upper fixture 10, and a lower fixture 11. The screw mechanism is installed in the bed 1. The upper fixture 10 includes a mounting part, a rotating part, and an adjustable locking block part. The mounting part is mounted on the screw mechanism, and the rotating part is connected to the mounting part. The rotating part includes a sliding plate 18. The adjustable locking block part includes six sliding parts 23, which are evenly distributed in a ring on the sliding plate 18. Each sliding part 23 is rotatably mounted with a positioning locking block 26. The structure and arrangement of the lower fixture 11 are the same as those of the upper fixture 10. The upper fixture 10 and the lower fixture 11 are arranged symmetrically. Several positioning locking blocks 26 located in the upper fixture 10 are staggered.

[0033] The screw mechanism includes a table 4, which is installed in the bed 1. Two guide rail columns 5 are installed on the table 4. A double-headed screw 6 is vertically rotatably installed in each guide rail column 5. The bottom of the double-headed screw 6 passes through the table 4. A sprocket 7 is connected to the bottom of the double-headed screw 6. A chain 8 is connected between the two sprockets 7. A first motor 9 is connected to the bottom of one sprocket 7. The mounting part includes two machine fixtures 13, which are fixed together by bolts and nuts. A pair of lifting arms 12 are connected to one machine fixture 13. The pair of lifting arms 12 are slidably connected to the two guide rail columns 5 respectively. A threaded hole is opened at the end of each lifting arm 12 away from the machine fixture 13. The threaded hole on the lifting arm 12 is screwed to the double-headed screw 6.

[0034] The first motor 9 is powered on and starts, and its output shaft drives a sprocket 7 connected to it to rotate. The sprocket 7 transmits power synchronously to another sprocket 7 through the chain 8, so that the two sprockets 7 rotate at the same speed and in the same direction. The two double-ended screws 6 rotate synchronously. The upper and lower threads of each double-ended screw 6 rotate in opposite directions. The lifting arm 12 of the upper clamp 10 engages with the upper thread of the double-ended screw 6, and the lifting arm 12 of the lower clamp 11 engages with the lower thread of the double-ended screw 6. When the double-ended screw 6 rotates, the two lifting arms 12 move in opposite directions along the guide rail column 5 under the action of the threads. The lifting arm 12 of the upper clamp 10 moves upward and the lifting arm 12 of the lower clamp 11 moves downward. The upper clamp 10 and the lower clamp 11 separate from each other. When they separate to a distance sufficient to place the gear to be processed, the first motor 9 stops to make room for the gear.

[0035] The operator or automated robot places the gear to be chamfered above the lower clamp 11. At this time, the tops of several positioning blocks 26 on the lower clamp 11 converge towards the central axis, forming a discrete frustum-shaped positioning surface. When the bottom inner edge of the workpiece contacts the inclined surface of the positioning blocks 26 on the lower clamp 11, since all the positioning blocks 26 are evenly distributed in a ring and have the same taper, they will generate a centripetal constraint force on the bottom inner edge of the workpiece. Under its own weight and the slight movement of the operator, the bottom inner edge of the workpiece will automatically slide down along the inclined surface of the positioning blocks 26 until the central axis of the bottom inner edge of the workpiece coincides with the central axis of the lower clamp 11. The lower clamp 11 completes the rapid initial positioning of the bottom of the workpiece.

[0036] The control system restarts the first motor 9, driving the lifting arm 12 of the upper clamp 10 to move downwards and the lifting arm 12 of the lower clamp 11 to move upwards, so that the upper clamp 10 and the lower clamp 11 move closer to each other. At the same time, the control system starts the two second motors 14 in the upper clamp 10 and the lower clamp 11 to rotate and adjust them to avoid collision between the positioning blocks 26 on both sides during the closing process. The positioning blocks 26 evenly distributed in a ring on the upper clamp 10 will gradually insert into the annular gap between the positioning blocks 26 on the lower clamp 11. The staggered tooth structure ensures that the upper and lower positioning blocks 26 are interlocked without interference when closing. When the upper clamp 10 and the lower clamp 11 close to the set position, the inclined surfaces of several positioning blocks 26 of the upper clamp 10 are in close contact with the inner edge of the top of the workpiece. The positioning blocks 26 of the upper clamp 10 also constrain the central axis of the inner ring of the top of the workpiece to coincide with the main axis of the equipment. At this point, the gear is simultaneously gripped from both ends by the two "cones" of the upper clamp 10 and the lower clamp 11, achieving complete centering and axial clamping. The double-cone clamping method not only has high centering accuracy but also uniform contact, which can effectively reduce clamping deformation.

[0037] A circular hole is provided in the center of the sliding plate 18. Rectangular grooves are evenly distributed in a ring on the sliding plate 18. The sliding component 23 is slidably installed in the rectangular grooves. The adjustable locking block includes a core post 20 and a shift plate 19. The core post 20 is set in the circular hole of the sliding plate 18. The shift plate 19 is located below the sliding plate 18 and is rotatably installed on the core post 20. A rivet 24 is provided at the bottom of each sliding component 23. A slender groove is provided on the shift plate 19 corresponding to the bottom of each rectangular groove. The rivet 24 is slidably set in the slender groove. The slender groove and the rectangular groove are connected. There is an included angle. The gear shift plate 19 has a threaded hole that extends from the outer ring to the inner ring of the gear shift plate 19. A conical bolt 21 is threaded into the threaded hole. The core column 20 has several conical holes that mate with the top of the conical bolt 21. The adjustable locking block also includes several racks 22 and the same number of angle-shifting gears 25 as the racks 22. Each positioning locking block 26 is coaxially connected to two angle-shifting gears 25 at the junction with the sliding member 23. The racks 22 are mounted on the sliding plate 18 and mesh with the angle-shifting gears 25.

[0038] When gears with different inner ring diameters need to be machined, the operator does not need to change the fixture. Instead, the operator can quickly adjust the radial position and tilt angle of the positioning block 26 through the adjustable block part. The operator loosens the cone top bolt 21 so that the cone at the top moves out of the current nail hole 27 on the core column 20, releasing the circumferential lock on the gear shift plate 19. Then the operator moves the head of the cone top bolt 21. The moving force will drive the gear shift plate 19 to rotate around the core column 20. When the gear shift plate 19 rotates, the side wall of each slender groove will push the rivet 24 at the bottom of the corresponding sliding member 23, forcing the sliding member 23 to slide synchronously along the rectangular groove on the sliding plate 18 in the direction away from the axis or in the direction closer to the axis. The sliding amount of all sliding members 23 is completely consistent, ensuring the concentricity of the ring array.

[0039] As the sliding member 23 moves radially, the positioning block 26 mounted on the sliding member 23 moves accordingly. The angle gear 25 coaxially connected to the rotating shaft of the positioning block 26 meshes with the rack 22 fixed on the sliding plate 18. The angle gear 25 is forced to roll on the rack 22, thereby causing the positioning block 26 to rotate. When the sliding member 23 slides outward, the top of the positioning block 26 tilts inward, and the cone angle of the cone it forms becomes larger and the shape becomes more gentle, which can clamp gears with larger inner diameters. Conversely, when the sliding member 23 slides inward, the top of the positioning block 26 retracts inward, the cone angle becomes smaller and the shape becomes sharper, which can clamp gears with smaller inner diameters. After adjustment, tighten the cone top bolt 21 so that the cone top re-inserts into the corresponding nail hole 27 on the core column 20, and the current adjustment state can be locked.

[0040] The rotating part includes a second motor 14 and a flange 15. The second motor 14 is installed between a pair of machine tools 13, and the flange 15 is rotatably installed between the pair of machine tools 13. The motor shaft of the second motor 14 is connected to the flange 15. The rotating part also includes a shallow cover 16 and a protective shell 17. The end of the flange 15 away from the second motor 14 is connected to the shallow cover 16. The shallow cover 16 is installed on the sliding plate 18 and wraps around the outside of the gear shift disc 19. A side sliding groove 28 for the conical bolt 21 to move is opened on one side of the shallow cover 16. The protective shell 17 is installed on the side of the sliding plate 18 away from the shallow cover 16. A through groove for the positioning block 26 to move is opened on the protective shell 17. A dustproof cloth is also provided in the through groove, and the positioning block 26 passes through the dustproof cloth. After clamping and adjustment are completed, the two second motors 14 in the upper clamp 10 and lower clamp 11 start synchronously. Through the transmission components such as flange 15, shallow cover 16 and sliding plate 18, they drive the entire quick-setup clamp 3 and the workpiece firmly clamped in the center to rotate stably around the main axis of the equipment. The milling machine 2 in the bed 1 starts, and its cutting tool feeds according to the preset chamfering trajectory to perform precise chamfering on the end face of the rotating gear.

[0041] The working principle of this invention is as follows: When the first motor 9 is powered on, its output shaft drives a sprocket 7 connected to it to rotate. The sprocket 7 transmits power synchronously to another sprocket 7 through the chain 8, so that the two sprockets 7 rotate at the same speed and in the same direction. The two double-ended screws 6 rotate synchronously. The upper and lower threads of each double-ended screw 6 have opposite directions of rotation. The lifting arm 12 of the upper clamp 10 engages with the upper thread of the double-ended screw 6, and the lifting arm 12 of the lower clamp 11 engages with the lower thread of the double-ended screw 6. When the double-ended screw 6 rotates, the two lifting arms 12 move in opposite directions along the guide rail column 5 under the action of the threads. The lifting arm 12 of the upper clamp 10 moves upward and the lifting arm 12 of the lower clamp 11 moves downward. The upper clamp 10 and the lower clamp 11 separate from each other. When the separation reaches a distance sufficient for the gear to be processed, the first motor 9 stops to make room for the gear.

[0042] The operator or automated robot places the gear to be chamfered above the lower clamp 11. At this time, the tops of several positioning blocks 26 on the lower clamp 11 converge towards the central axis, forming a discrete frustum-shaped positioning surface. When the bottom inner edge of the workpiece contacts the inclined surface of the positioning blocks 26 on the lower clamp 11, since all the positioning blocks 26 are evenly distributed in a ring and have the same taper, they will generate a centripetal constraint force on the bottom inner edge of the workpiece. Under its own weight and the slight movement of the operator, the bottom inner edge of the workpiece will automatically slide down along the inclined surface of the positioning blocks 26 until the central axis of the bottom inner edge of the workpiece coincides with the central axis of the lower clamp 11. The lower clamp 11 completes the rapid initial positioning of the bottom of the workpiece.

[0043] The control system restarts the first motor 9, driving the lifting arm 12 of the upper clamp 10 to move downwards and the lifting arm 12 of the lower clamp 11 to move upwards, so that the upper clamp 10 and the lower clamp 11 move closer to each other. At the same time, the control system starts the two second motors 14 in the upper clamp 10 and the lower clamp 11 to rotate and adjust them to avoid collision between the positioning blocks 26 on both sides during the closing process. The positioning blocks 26 evenly distributed in a ring on the upper clamp 10 will gradually insert into the annular gap between the positioning blocks 26 on the lower clamp 11. The staggered tooth structure ensures that the upper and lower positioning blocks 26 are interlocked without interference when closing. When the upper clamp 10 and the lower clamp 11 close to the set position, the inclined surfaces of several positioning blocks 26 of the upper clamp 10 are in close contact with the inner edge of the top of the workpiece. The positioning blocks 26 of the upper clamp 10 also constrain the central axis of the inner ring of the top of the workpiece to coincide with the main axis of the equipment. At this point, the gear is simultaneously gripped from both ends by the two "cones" of the upper clamp 10 and the lower clamp 11, achieving complete centering and axial clamping. The double-cone clamping method not only has high centering accuracy but also uniform contact, which can effectively reduce clamping deformation.

[0044] When gears with different inner ring diameters need to be machined, the operator does not need to change the fixture. Instead, the operator can quickly adjust the radial position and tilt angle of the positioning block 26 through the adjustable block part. The operator loosens the cone top bolt 21 so that the cone at the top moves out of the current nail hole 27 on the core column 20, releasing the circumferential lock on the gear shift plate 19. Then the operator moves the head of the cone top bolt 21. The moving force will drive the gear shift plate 19 to rotate around the core column 20. When the gear shift plate 19 rotates, the side wall of each slender groove will push the rivet 24 at the bottom of the corresponding sliding member 23, forcing the sliding member 23 to slide synchronously along the rectangular groove on the sliding plate 18 in the direction away from the axis or in the direction closer to the axis. The sliding amount of all sliding members 23 is completely consistent, ensuring the concentricity of the ring array.

[0045] As the sliding member 23 moves radially, the positioning block 26 mounted on the sliding member 23 moves accordingly. The angle gear 25 coaxially connected to the rotating shaft of the positioning block 26 meshes with the rack 22 fixed on the sliding plate 18. The angle gear 25 is forced to roll on the rack 22, thereby causing the positioning block 26 to rotate. When the sliding member 23 slides outward, the top of the positioning block 26 tilts inward, and the cone angle of the cone it forms becomes larger and the shape becomes more gentle, which can clamp gears with larger inner diameters. Conversely, when the sliding member 23 slides inward, the top of the positioning block 26 retracts inward, the cone angle becomes smaller and the shape becomes sharper, which can clamp gears with smaller inner diameters. After adjustment, tighten the cone top bolt 21 so that the cone top re-inserts into the corresponding nail hole 27 on the core column 20, and the current adjustment state can be locked.

[0046] After clamping and adjustment are completed, the two second motors 14 in the upper clamp 10 and lower clamp 11 start synchronously. Through the transmission components such as flange 15, shallow cover 16 and sliding plate 18, they drive the entire quick-setup clamp 3 and the workpiece firmly clamped in the center to rotate stably around the main axis of the equipment. The milling machine 2 in the bed 1 starts, and its cutting tool feeds according to the preset chamfering trajectory to perform precise chamfering on the end face of the rotating gear.

[0047] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A gear end face chamfering device, characterized in that: It includes a bed (1), a milling machine (2) and a quick-release fixture (3). The milling machine (2) is located inside the bed (1). The quick-release fixture (3) includes a screw mechanism, an upper fixture (10) and a lower fixture (11). The screw mechanism is installed in the bed (1). The upper clamp (10) includes a mounting part, a rotating part and an adjustable locking block part. The mounting part is mounted on a screw mechanism. The rotating part is connected to the mounting part. The rotating part includes a sliding plate (18). The adjustable locking block part includes a plurality of sliding parts (23). The plurality of sliding parts (23) are evenly distributed in a ring on the sliding plate (18). Each sliding part (23) is rotatably mounted with a positioning locking block (26). The structure and arrangement of the lower clamp (11) are the same as those of the upper clamp (10). The upper clamp (10) and the lower clamp (11) are arranged symmetrically. The positioning blocks (26) in the upper clamp (10) are staggered with the positioning blocks (26) in the upper clamp (10).

2. The gear end face chamfering device according to claim 1, characterized in that: The sliding plate (18) has a circular hole in the middle and rectangular grooves are evenly distributed in a ring on the sliding plate (18). The sliding component (23) is slidably installed in the rectangular groove. The adjustable locking block includes a core column (20) and a gear shifting plate (19). The core column (20) is set in the circular hole of the sliding plate (18). The gear shifting plate (19) is located below the sliding plate (18) and is rotatably installed on the core column (20). Each sliding component (23) has a rivet (24) at its bottom. The gear shift plate (19) has a long, narrow groove below each rectangular groove, and the rivet (24) is slidably disposed in the long, narrow groove.

3. A gear end face chamfering device according to claim 2, characterized in that: There is an angle between the elongated groove and the rectangular groove. The gear shift plate (19) has a threaded hole. The threaded hole extends from the outer ring of the gear shift plate (19) to the inner ring. A conical bolt (21) is threaded into the threaded hole. Several conical holes are opened on the core column (20). The conical holes are engaged with the top of the conical bolt (21).

4. A gear end face chamfering device according to claim 1, characterized in that: The adjustable locking block also includes a number of racks (22) and the same number of angle-shifting gears (25) as the racks (22). Each positioning block (26) is coaxially connected to at least one angle-shifting gear (25) at the junction with the sliding member (23). The racks (22) are mounted on the sliding plate (18) and mesh with the angle-shifting gears (25).

5. A gear end face chamfering device according to claim 3, characterized in that: The screw mechanism includes a platform (4), which is installed in the bed (1). Two guide rail columns (5) are installed on the platform (4). A double-headed screw (6) is vertically rotatably installed in each guide rail column (5). The bottom of the double-headed screw (6) passes through the platform (4). A sprocket (7) is connected to the bottom of the double-headed screw (6). A chain (8) is connected between the two sprockets (7). A first motor (9) is connected to the bottom of one of the sprockets (7).

6. A gear end face chamfering device according to claim 5, characterized in that: The mounting section includes two mounting fixtures (13), which are fixed together by bolts and nuts. A pair of lifting arms (12) are connected to one mounting fixture (13). The pair of lifting arms (12) are slidably connected to two guide rail columns (5). Each lifting arm (12) has a threaded hole at one end away from the mounting fixture (13), and the threaded hole on the lifting arm (12) is screwed to a double-ended screw (6).

7. A gear end face chamfering device according to claim 6, characterized in that: The rotating part includes a second motor (14) and a flange (15). The second motor (14) is installed between a pair of machine tools (13), and the flange (15) is rotatably installed between the pair of machine tools (13). The motor shaft of the second motor (14) is connected to the flange (15).

8. A gear end face chamfering device according to claim 7, characterized in that: The rotating part also includes a shallow cover (16) and a protective shell (17). The flange (15) is connected to the shallow cover (16) at the end away from the second motor (14). The shallow cover (16) is installed on the sliding plate (18) and is wrapped around the outside of the gear shift plate (19). A side slide groove (28) for the conical top bolt (21) to move is provided on one side of the shallow cover (16). The protective shell (17) is installed on the side of the sliding plate (18) away from the shallow cover (16). A through groove for the positioning block (26) to move is provided on the protective shell (17). A dustproof cloth is also provided in the through groove. The positioning block (26) passes through the dustproof cloth.

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