Gear chamfering machine

Abstract

This invention relates to the field of gear processing technology, specifically a gear chamfering machine tool, including a base and a rotating fixture mounted on the base for fixing the workpiece. A servo motor is mounted on the base, and a grinding wheel is mounted on the output shaft of the servo motor. The machine tool also includes: a driven shaft, fixedly connected to the grinding wheel, with one end rotatably connected to the output shaft of the servo motor; and a connecting member, positioned between the driven shaft and the servo motor drive shaft. This device can track the deflection amplitude of the grinding wheel in real time through a limit monitoring component. When abnormal fluctuation is detected, a two-stage safety response mechanism is triggered: firstly, the main drive connection is quickly disconnected to block the transmission of abnormal torque; then, a continuously rotating drive ring forms a friction transmission with the grinding wheel docking component, actively guiding the grinding wheel to deflect along a safe trajectory and detach from the workpiece, thereby reducing the risk of collision between the grinding wheel and the workpiece due to sudden malfunctions in traditional machine tools.

Description

Technical Field

[0001] This invention relates to the field of gear processing technology, specifically to a gear chamfering machine tool. Background Technology

[0002] Gear chamfering machines are specialized equipment for the automated processing of burrs and edges on gear teeth. Their core function is to remove burrs and flanging generated during processing through precision grinding with a grinding wheel or cutting tool, creating rounded corners or beveled transitions. Among these, automatic chamfering devices using circular grinding wheels are widely used due to their simple structure and high efficiency. In this device, the grinding wheel shaft, in addition to rotating, is driven by a servo motor and floats on the workpiece with a certain torque. When the workpiece rotates, the change in radial grinding force forces the grinding wheel shaft to oscillate using the servo motor, ensuring the grinding wheel contacts the workpiece teeth. The chamfering is completed when the workpiece rotates one revolution. During normal operation, if the control system malfunctions, it will cause an imbalance in the servo motor's drive torque, leading to displacement deviations in the floating mechanism. When the actual oscillation amplitude exceeds the design tolerance, the relative position of the grinding wheel shaft and the workpiece tooth profile shifts. This can result in minor overcutting or undercutting, or even unexpected contact between the grinding wheel and the workpiece, causing excessive equipment vibration or even workpiece breakage. Therefore, we propose a gear chamfering machine tool. Summary of the Invention

[0003] To address the aforementioned technical problems, this application provides a gear chamfering machine tool, including a base and a rotating fixture mounted on the base for fixing the workpiece. A servo motor is mounted on the base, and a grinding wheel is mounted on the output shaft of the servo motor. The tool also includes:

[0004] The driven shaft is fixedly connected to the grinding wheel, and one end of the driven shaft is rotatably connected to the output shaft of the servo motor;

[0005] A connector, located between the driven shaft and the servo motor drive shaft, is used to connect the servo motor and the grinding wheel.

[0006] A limit monitoring component is installed between the servo motor and the grinding wheel to monitor the deflection amplitude of the grinding wheel;

[0007] The drive ring is mounted on the housing of the servo motor and maintains continuous rotation during device operation.

[0008] The docking component, installed on the grinding machine, is used to disconnect the connecting component first when the limit monitoring component detects abnormal deflection and floating of the grinding machine, and then dock the driven shaft with the drive ring to drive the grinding machine to deflect and detach from the workpiece.

[0009] In some embodiments, the connector includes a first disk fixedly connected to the output shaft of a servo motor, on which a plurality of ratchet protrusions are uniformly fixedly connected. A second disk is provided on the driven shaft, on which a plurality of ratchet protrusions are also uniformly fixedly connected. The ratchet protrusions on the first disk and the second disk mesh with each other, and the second disk is slidably connected to the driven shaft. A sliding protrusion is fixedly connected to its inner wall. A sliding groove is provided on the driven shaft. One end of the sliding protrusion is located in the sliding groove and is slidably connected to its inner wall to guide and limit the sliding of the second disk.

[0010] A circular plate is fixedly connected to the driven shaft, and a spring is sleeved on the driven shaft, with its two ends respectively fixedly connected to the circular disk and the circular plate.

[0011] In some embodiments, the limit monitoring component includes a mounting ring fixedly connected to the housing of the servo motor, a drive ring rotatably connected to the mounting ring, an arc-shaped plate fixedly connected to the mounting ring, two limit baffles symmetrically arranged on the arc-shaped plate, and a deflection plate fixedly connected to the grinding wheel. When the servo motor drives the grinding wheel to deflect, the limit baffles are used to block and limit the deflection plate.

[0012] Furthermore, a conductive cylinder is fixedly connected to the end of the deflection plate, and the contact end between the limiting baffle and the conductive cylinder is designed with conductive material. The grinding wheel is equipped with a controller that is electrically connected to the conductive cylinder.

[0013] In some embodiments, an arc-shaped groove is provided on the arc-shaped plate, and a screw is fixedly connected to the limiting baffle. One end of the screw slides through the arc-shaped groove and is connected to a limiting knob by a thread.

[0014] In some embodiments, a plurality of toothed protrusions are uniformly fixedly connected to the outer side of the drive ring, a drive motor is fixedly connected to the servo motor housing, a second shaft is fixedly connected to the output shaft of the drive motor, and a gear disk that meshes with the toothed protrusions is fixedly connected to one end of the second shaft. When the drive motor is started, it drives the drive ring to rotate.

[0015] In some embodiments, the docking member includes a slider that is slidably connected to the circular plate, the slider having a transverse guide groove, a strip plate fixedly connected to the second disk, and a circular rod that slides through the transverse guide groove fixedly connected to one end of the strip plate.

[0016] Furthermore, a right-angled triangular groove is provided on the slider, which is connected to the horizontal guide groove. A mounting plate is fixedly connected to one side of the circular plate, and a rectangular plate is fixedly connected to the mounting plate. A guide rod is fixedly connected to one end of the slider, and one end of the guide rod slides through the rectangular plate. A spring is sleeved on the guide rod, with its two ends respectively contacting and abutting against the rectangular plate and the slider.

[0017] In some embodiments, a circular iron plate is fixedly connected to the guide rod, a second rectangular plate is fixedly connected to the mounting plate, a ring electromagnet is fixedly connected to the second rectangular plate, and the ring electromagnet is electrically connected to the controller. One end of the guide rod slides through the ring electromagnet and the second rectangular plate in sequence, and is fixedly connected to an arc-shaped friction plate.

[0018] In some embodiments, a guide protrusion with a T-shaped cross-section is fixedly connected to the bottom end of the slider, and a guide groove with a T-shaped cross-section is provided on the circular plate. One end of the guide protrusion is located in the guide groove and is slidably connected to its inner wall, which is used to guide and limit the movement of the slider relative to the circular plate.

[0019] The present invention has at least the following beneficial effects:

[0020] This device can track the deflection amplitude of the grinding wheel in real time through limit monitoring components. When abnormal fluctuation is detected, a two-level safety response mechanism is triggered: first, the main drive connection is quickly cut off to block the transmission of abnormal torque; then, the continuously rotating drive ring forms a friction transmission with the grinding wheel docking part to actively guide the grinding wheel to deflect along a safe trajectory and detach from the workpiece, thereby reducing the risk of collision between the grinding wheel and the workpiece caused by sudden failure of traditional machine tools. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 For the present invention Figure 1 Schematic diagram of partial cross-section;

[0023] Figure 3 For the present invention Figure 2 Schematic diagram of partial cross-section;

[0024] Figure 4 For the present invention Figure 3 Schematic diagram of partial cross-section;

[0025] Figure 5 For the present invention Figure 4 Schematic diagram of the structure of area A in the middle;

[0026] Figure 6 For the present invention Figure 4 Schematic diagram of partial cross-section;

[0027] Figure 7 For the present invention Figure 6 Schematic diagram of the structure of Zone B;

[0028] Figure 8 For the present invention Figure 6 Schematic diagram of partial cross-section.

[0029] In the diagram: 1-Base; 11-Rotating clamp; 12-Servo motor; 13-Grinding wheel; 2-Driven shaft; 3-Connector; 4-Limit monitoring component; 5-Drive ring; 6-Dating component; 31-Disc one; 32-Ratchet convex; 33-Disc two; 34-Sliding convex; 35-Sliding groove; 36-Circular plate; 37-Spring one; 38-Mounting ring; 39-Arc plate; 41-Limit baffle; 42-Deflection plate; 43-Conductive cylinder; 44-Controller; 45- 46-Arch-shaped groove; 47-Screw; 48-Limit knob; 49-Slider; 51-Horizontal guide groove; 52-Strip plate; 53-Round rod; 54-Right-angled triangular groove; 55-Mounting plate; 56-Rectangular plate one; 57-Spring two; 58-Iron circular plate; 59-Rectangular plate two; 61-Ring electromagnet; 62-Arch-shaped friction plate; 63-Guide convex; 64-Guide groove; 65-Tooth convex; 66-Drive motor; 67-Gear disc; 68-Shaft two. Detailed Implementation

[0030] 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.

[0031] Please see Figures 1-8 The present invention provides a technical solution: a gear chamfering machine tool, including a base 1 and a rotating fixture 11 mounted on the base 1 for fixing the workpiece, a servo motor 12 mounted on the base 1, a grinding wheel 13 mounted on the output shaft of the servo motor 12, and further including:

[0032] Driven shaft 2 is fixedly connected to grinding wheel 13, and one end of driven shaft 2 is rotatably connected to the drive shaft of servo motor 12;

[0033] Connector 3 is disposed between driven shaft 2 and drive shaft of servo motor 12, and is used to connect servo motor 12 and grinding wheel 13;

[0034] Limit monitoring component 4 is installed between servo motor 12 and grinding wheel 13 to monitor the deflection amplitude of grinding wheel 13;

[0035] The drive ring 5 is mounted on the servo motor 12 and maintains continuous rotation when the device is working.

[0036] The docking part 6 is set on the grinding wheel 13. When the limit monitoring part 4 detects an abnormal deflection and floating of the grinding wheel 13, the connecting part 3 is disconnected first, and then the driven shaft 2 is docked with the drive ring 5 to drive the grinding wheel 13 to deflect and detach from the workpiece.

[0037] Specifically, this device can track the deflection amplitude of the grinding wheel 13 in real time through the limit monitoring component 4. When abnormal floating is detected, a two-level safety response mechanism is triggered: first, the main drive connection is quickly cut off to block the transmission of abnormal torque; then, the continuously rotating drive ring 5 forms a friction drive with the docking part 6 of the grinding wheel 13 to actively guide the grinding wheel to deflect along a safe trajectory and detach from the workpiece, thereby reducing the risk of collision between the grinding wheel and the workpiece caused by sudden failure of traditional machine tools.

[0038] The connector 3 includes a first disk 31 fixedly connected to the output shaft of the servo motor 12. Multiple ratchet protrusions 32 are evenly fixedly connected to the first disk 31. A second disk 33 is slidably connected to the driven shaft 2. Multiple ratchet protrusions 32 are also evenly fixedly connected to the second disk 33. The ratchet protrusions 32 on the first disk 31 and the second disk 33 face each other and the ratchet protrusions 32 mesh with each other. The second disk 33 is slidably connected to the driven shaft 2. A sliding protrusion 34 is fixedly connected to its inner wall. A sliding groove 35 is provided on the driven shaft 2. One end of the sliding protrusion 34 is located in the sliding groove 35 and is slidably connected to its inner wall to guide and limit the second disk 33 to slide along the driven shaft 2.

[0039] A circular plate 36 is fixedly connected to the driven shaft 2. A spring 37 is sleeved on the driven shaft 2, with its two ends fixedly connected to the second disk 33 and the circular plate 36 respectively. In the initial state of the spring 37, the first disk 31 and the ratchet protrusion 32 on the second disk 33 mesh with each other.

[0040] The limit monitoring component 4 includes a mounting ring 38 fixedly connected to the housing of the servo motor 12. The drive ring 5 is rotatably connected to the mounting ring 38. An arc-shaped plate 39 is fixedly connected to the mounting ring 38. Two limit baffles 41 are symmetrically arranged on the arc-shaped plate 39. A deflection plate 42 is fixedly connected to the grinding wheel 13. When the servo motor 12 drives the grinding wheel 13 to deflect, the limit baffles 41 block and limit the deflection plate 42.

[0041] Furthermore, a conductive cylinder 43 is fixedly connected to the end of the deflection plate 42. Both ends of the conductive cylinder 43 are located outside the deflection plate 42 so as to contact the two limiting baffles 41. The contact ends of the limiting baffles 41 and the conductive cylinder 43 are designed with conductive material. A controller 44 electrically connected to the conductive cylinder 43 is provided on the grinding wheel 13.

[0042] Specifically, the deflection plate 42 is located between the two limiting baffles 41, and the distance between the two limiting baffles 41 is the range that the deflection plate 42 can deflect, which is the normal swing amplitude of the grinding wheel 13 when it is working.

[0043] An arc-shaped groove 45 is provided on the arc-shaped plate 39, and a screw 46 is fixedly connected to the limiting baffle 41. One end of the screw 46 slides through the arc-shaped groove 45 and is connected to the limiting knob 47 by thread. Specifically, the distance between the two limiting baffles 41 can be adjusted by sliding along the arc-shaped groove 45 to improve the practicality of the device. Then, by rotating the limiting knob 47, the arc-shaped plate 39 is pressed to fix the limiting baffle 41.

[0044] Multiple toothed protrusions 65 are evenly fixedly connected to the outer side of the drive ring 5. A drive motor 66 is fixedly connected to the housing of the servo motor 12. A shaft 68 is fixedly connected to the output shaft of the drive motor 66. A gear disk 67 that meshes with the toothed protrusions 65 is fixedly connected to one end of the shaft 68. When the drive motor 66 is started, it drives the shaft 68 and the gear disk 67 to rotate, thereby driving the drive ring 5 to rotate.

[0045] The docking component 6 includes a slider 48 that is slidably connected to the circular plate 36. A horizontal guide groove 49 is provided on the slider 48. When the circular rod 52 is located in the horizontal guide groove 49, the position between the second disk 33 and the circular plate 36 can be fixed relative to each other, thereby making the output shaft of the servo motor 12 and the driven shaft 2 rigidly connected, improving the stability of the device during operation. A strip plate 51 is fixedly connected to the second disk 33. A circular rod 52 that slides through the horizontal guide groove 49 is fixedly connected to one end of the strip plate 51.

[0046] Furthermore, a right-angled triangular groove 53 is provided on the slider 48, which is connected to the horizontal guide groove 49. A mounting plate 54 is fixedly connected to one side of the circular plate 36, and a rectangular plate 55 is fixedly connected to the mounting plate 54. A guide rod 56 is fixedly connected to one end of the slider 48, and one end of the guide rod 56 slides through the rectangular plate 55. A spring 57 is sleeved on the guide rod 56, with its two ends respectively contacting and abutting against the rectangular plate 55 and the slider 48.

[0047] A circular iron plate 58 is fixedly connected to the guide rod 56, and a rectangular plate 59 is fixedly connected to the mounting plate 54. A ring electromagnet 61 is fixedly connected to the rectangular plate 59, and the ring electromagnet 61 is electrically connected to the controller 44. One end of the guide rod 56 slides through the ring electromagnet 61 and the rectangular plate 59 in sequence, and is fixedly connected to an arc-shaped friction plate 62.

[0048] Specifically, during normal operation, the device uses the rotation of the servo motor 12 to drive the grinding wheel 13 to swing, performing chamfering on the workpiece. If a program malfunction occurs in the control system, such as when the servo motor 12 drives the grinding wheel 13 to deflect towards the workpiece with an excessive deflection amplitude, the grinding wheel 13 will simultaneously deflect the deflection plate 42. A limit baffle 41 then limits the deflection plate 42, preventing the grinding wheel 13 from continuing to deflect towards the workpiece. The conductive cylinder 43 on the deflection plate 42 contacts the limit baffle 41 and conducts current, which is received by the controller 44. The controller 44 then uses a program to energize the annular electromagnet 61, which in turn attracts the iron circular plate 58, causing the guide rod 56 to move a certain distance, thereby moving the slider 48. When the round rod 52 is disengaged from the horizontal guide groove 49, the second disc 33 loses its support. Consequently, the rotation of the servo motor 12 will drive the first disc 31 to rotate, and it will not be blocked by the second disc 33, thus preventing the servo motor 12 from being jammed. Subsequently, if the servo motor 12 continues to rotate towards the workpiece, that is, the conductive cylinder 43 continues to contact the limit baffle 41, then the controller 44 increases the current of the annular electromagnet 61, so that it further attracts the iron circular plate 58, thereby driving the arc-shaped friction plate 62, which is fixedly connected to the guide rod 56, to press against the inner wall of the drive ring 5. At the same time, the inclined side of the right-angled triangular groove 53 on the slider 48 pushes the round rod 52, so as to drive the ratchet protrusion 32 on the second disc 33 to completely disengage from the ratchet protrusion 32 on the first disc 31 to avoid interference. Then the drive ring 5 uses friction to drive the grinding wheel 13 to deflect away from the workpiece.

[0049] If the servo motor 12 drives the grinding wheel 13 to deflect away from the workpiece, and the deflection amplitude exceeds the normal value, since the limit baffle 41 is fixed on the arc plate 39 by the limit knob 47, we can loosen the limit knob 47 of the limit baffle 41 a little in advance. Then, when the servo motor 12 continues to deflect in this direction, it can push the limit baffle 41 to move a distance, providing reaction time for the subsequent docking of the arc friction plate 62 and the drive ring 5.

[0050] If the servo motor 12 drives the grinding wheel 13 to deflect, and the deflection amplitude is less than the normal value, the conductive cylinder 43 will not be able to contact the limit baffle 41 in time, which will also control the arc-shaped friction plate 62 to dock with the drive ring 5.

[0051] The bottom end of the slider 48 is fixedly connected to a guide protrusion 63 with a T-shaped cross section. A guide groove 64 with a T-shaped cross section is provided on the circular plate 36. One end of the guide protrusion 63 is located in the guide groove 64 and is slidably connected to its inner wall to guide and limit the movement of the slider 48 relative to the circular plate 36.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A gear chamfering machine tool, comprising a base (1) and a rotating fixture (11) disposed on the base (1) for fixing a workpiece, wherein a servo motor (12) is disposed on the base (1), and a grinding wheel (13) is mounted on the output shaft of the servo motor (12), characterized in that, It also includes: Driven shaft (2) is fixedly connected to grinding wheel (13), and one end of driven shaft (2) is rotatably connected to the output shaft of servo motor (12); The connector (3) is located between the driven shaft (2) and the drive shaft of the servo motor (12) and is used to connect the servo motor (12) and the grinding wheel (13). Limit monitoring component (4) is set between servo motor (12) and grinding wheel (13) to monitor the deflection amplitude of grinding wheel (13); The drive ring (5) is set on the housing of the servo motor (12) and it maintains a continuous rotation state when the device is working; The docking part (6) is set on the grinding wheel (13) and is used to disconnect the connecting part (3) first when the limit monitoring part (4) detects the abnormal deflection and floating of the grinding wheel (13), and then dock the driven shaft (2) with the drive ring (5) to drive the grinding wheel (13) to deflect and disengage from the workpiece. The limit monitoring component (4) includes a mounting ring (38) fixedly connected to the housing of the servo motor (12), the drive ring (5) being rotatably connected to the mounting ring (38), an arc plate (39) fixedly connected to the mounting ring (38), two limit baffles (41) symmetrically arranged on the arc plate (39), and a deflection plate (42) fixedly connected to the grinding wheel (13). When the servo motor (12) drives the grinding wheel (13) to deflect, the limit baffles (41) block and limit the deflection plate (42). A conductive cylinder (43) is fixedly connected to the end of the deflection plate (42). The contact end between the limiting baffle (41) and the conductive cylinder (43) is designed with conductive material. A controller (44) electrically connected to the conductive cylinder (43) is provided on the grinding wheel (13).

2. The gear chamfering machine tool according to claim 1, characterized in that: The connector (3) includes a disk one (31) fixedly connected to the output shaft of the servo motor (12). Multiple ratchet protrusions (32) are evenly fixedly connected on the disk one (31). A disk two (33) is provided on the driven shaft (2). Multiple ratchet protrusions (32) are also evenly fixedly connected on the disk two (33). The ratchet protrusions (32) on the disk one (31) and the disk two (33) mesh with each other. The disk two (33) is slidably connected to the driven shaft (2). A sliding protrusion (34) is fixedly connected to its inner wall. A sliding groove (35) is provided on the driven shaft (2). One end of the sliding protrusion (34) is located in the sliding groove (35) and is slidably connected to its inner wall to guide and limit the sliding of the disk two (33). A circular plate (36) is fixedly connected to the driven shaft (2), and a spring (37) is sleeved on the driven shaft (2) and its two ends are fixedly connected to the circular disk (33) and the circular plate (36) respectively.

3. The gear chamfering machine tool according to claim 2, characterized in that: The arc plate (39) has an arc groove (45), and a screw (46) is fixedly connected to the limiting baffle (41). One end of the screw (46) slides through the arc groove (45) and is connected to a limiting knob (47) by a thread.

4. The gear chamfering machine tool according to claim 3, characterized in that: Multiple toothed protrusions (65) are uniformly fixedly connected to the outer side of the drive ring (5). A drive motor (66) is fixedly connected to the outer shell of the servo motor (12). A shaft two (68) is fixedly connected to the output shaft of the drive motor (66). A gear disk (67) that meshes with the toothed protrusions (65) is fixedly connected to one end of the shaft two (68). When the drive motor (66) is started, it drives the drive ring (5) to rotate.

5. The gear chamfering machine tool according to claim 4, characterized in that: The docking component (6) includes a slider (48) that is slidably connected to the circular plate (36). A transverse guide groove (49) is provided on the slider (48). A strip plate (51) is fixedly connected to the second disk (33). A circular rod (52) that slides through the transverse guide groove (49) is fixedly connected to one end of the strip plate (51). A right-angled triangular groove (53) is provided on the slider (48), the right-angled triangular groove (53) is connected to the horizontal guide groove (49), a mounting plate (54) is fixedly connected to one side of the circular plate (36), a rectangular plate (55) is fixedly connected to the mounting plate (54), a guide rod (56) is fixedly connected to one end of the slider (48), one end of the guide rod (56) slides through the rectangular plate (55), and a spring (57) is sleeved on the guide rod (56) with its two ends respectively contacting and abutting the rectangular plate (55) and the slider (48).

6. The gear chamfering machine tool according to claim 5, characterized in that: A circular iron plate (58) is fixedly connected to the guide rod (56), a rectangular plate (59) is fixedly connected to the mounting plate (54), a ring electromagnet (61) is fixedly connected to the rectangular plate (59), and the ring electromagnet (61) is electrically connected to the controller (44). One end of the guide rod (56) slides through the ring electromagnet (61) and the rectangular plate (59) in sequence, and is fixedly connected to an arc-shaped friction plate (62).

7. The gear chamfering machine tool according to claim 6, characterized in that: The bottom end of the slider (48) is fixedly connected to a guide protrusion (63) with a cross-section of T. The circular plate (36) is provided with a guide groove (64) with a cross-section of T. One end of the guide protrusion (63) is located in the guide groove (64) and is slidably connected to its inner wall. It is used to guide and limit the movement of the slider (48) relative to the circular plate (36).

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