Numerically controlled gear forming machine

Abstract

The application discloses a numerical control forming gear grinding machine, which comprises a moving adjusting assembly, a gear grinding mechanism and a wear sensing mechanism, wherein the moving adjusting assembly is further provided with a wear compensation mechanism, the wear compensation mechanism is connected with the wear sensing mechanism through linkage components, and the moving adjusting assembly is driven to perform micro-motion according to the sensed wear amount, so as to compensate the influence of the reduction of the grinding wheel diameter on the grinding depth; in order to solve the technical problem that the grinding wheel of the ordinary numerical control forming gear grinding machine is continuously worn during long-time use, manual regular detection and manual adjustment are needed, and the machining efficiency is low, the wear sensing and compensation structure integrated in the machine tool is designed, the up-down reciprocating motion of the grinding wheel itself is taken as a trigger source, the continuous compensation of the grinding process can be realized without intervention, the stability of the tooth depth precision of the batch machining gears is ensured, and the numerical control forming gear grinding machine is especially suitable for high-precision forming gear grinding occasions.

Description

Technical Field

[0001] This application relates to the field of gear processing equipment technology, and in particular to a CNC forming gear grinding machine. Background Technology

[0002] CNC profile grinding machine is a key piece of equipment for high-precision gear processing. It uses a profile grinding wheel with a specific tooth shape to grind gear workpieces to obtain high-precision tooth shape and tooth direction.

[0003] In the existing gear grinding machine, during the grinding process, the high-speed rotating grinding wheel continuously contacts and rubs against the workpiece. The abrasive grains will gradually fall off and become dull, resulting in a reduction in the diameter of the grinding wheel and a change in the forming profile. This wear directly leads to a shallower grinding depth and an increase in gear tooth thickness, which seriously affects the consistency of gear tooth depth accuracy in batch processing. Currently, in routine production practices, operators typically use periodic machine shutdowns to manually measure the grinding wheel diameter using measuring tools such as outside micrometers, or indirectly determine the wear condition of the grinding wheel by trial grinding of the workpiece and checking its tooth thickness. Subsequently, based on the measurement results, the machine tool's CNC system needs to be manually operated to adjust the grinding depth or the center distance between the workpiece and the grinding wheel. The above-mentioned detection methods are discontinuous and cannot reflect the wear status during the processing in real time, resulting in compensation lag. Secondly, frequent machine stoppages for measurement and manual input severely disrupt the continuous processing cycle, reducing equipment utilization and production efficiency.

[0004] In other words, existing technologies suffer from the following technical problems: the grinding wheels of ordinary gear grinding machines wear down after prolonged use, resulting in insufficient machining accuracy. Therefore, a CNC forming gear grinding machine is proposed to address the above problems. Summary of the Invention

[0005] This application provides a CNC forming gear grinding machine to solve the problem of insufficient machining accuracy caused by wear of ordinary gear grinding machine grinding wheels after long-term use in the prior art.

[0006] According to one aspect of this application, a CNC forming gear grinding machine is provided, comprising: A movable adjustment assembly, comprising a movable base; The gear grinding mechanism includes a reciprocating linear guide seat, on which a rotatable grinding wheel is mounted for grinding the gear blank. The wear sensing mechanism is fixedly installed on the movement path of the grinding wheel to sense the amount of diameter reduction of the grinding wheel due to wear. The movable adjustment component is also equipped with a wear compensation mechanism, which is connected to the wear sensing mechanism through a linkage component.

[0007] Furthermore, a positioning block is fixedly installed on the upper surface of the movable base, a rectangular support shell is fixedly connected to the upper surface of the positioning block, and a movable plate is installed on the upper surface of the rectangular support shell.

[0008] Furthermore, the gear grinding mechanism also includes a fixed frame, a U-shaped fixed frame, and a linear guide rod, with the U-shaped fixed frame fixedly connected to the side wall of the fixed frame; A linear guide rod is fixedly connected between the upper and lower ends of the U-shaped fixing frame. The linear guide rod passes through the linear guide seat and slides with the linear guide seat. A grinding wheel bracket is fixedly connected to the side wall of the linear guide seat. A grinding wheel is rotatably connected to one end of the grinding wheel bracket. A rotary motor is fixedly installed on the side wall of the grinding wheel bracket. The output shaft of the rotary motor is fixedly connected to the grinding wheel.

[0009] Furthermore, the wear sensing mechanism includes a connecting frame, a guide crossbar, a guide seat, and a reference surface contact plate; A guide plate is fixedly connected to the connecting frame. The guide plate is positioned above the movement trajectory of the grinding wheel and is fixedly installed. A guide seat is slidably connected to the guide plate. One end of a connecting rod is fixedly connected to the side wall of the guide seat. The other end of the connecting rod is fixedly connected to a reference surface contact plate, which is used to contact the grinding wheel assembly to sense its position.

[0010] Furthermore, a magnetic suction part is fitted and fixedly installed on the side wall of the reference surface contact plate, and a steel flange is provided on the side wall of the grinding wheel to generate magnetic attraction with the magnetic suction part.

[0011] Furthermore, the guide seat is connected to a displacement amplification structure, which includes a moving rack, a transmission rod, and a gear; A movable rack is fixedly installed on the upper surface of the guide seat, and a transmission rod is rotatably connected to the upper surface of the connecting frame. A gear is fixedly connected to the arc-shaped wall of the transmission rod, and the gear meshes with the movable rack. One end of the transmission rod is fixedly connected to a long arm, one end of the long arm is rotatably connected to one end of a connecting rod, and the other end of the connecting rod is rotatably connected to a hinge frame.

[0012] Furthermore, the wear compensation mechanism includes a compensation moving block and a screw. The rectangular support shell has an internal cavity, and the compensation moving block is disposed in the internal cavity of the rectangular support shell and slides against the inner wall of the rectangular support shell. The compensation moving block and the moving plate are fixedly connected.

[0013] Furthermore, a screw is rotatably connected to the inner cavity of the rectangular support shell via a bearing. The screw passes through the compensation moving block and is threadedly engaged with the compensation moving block. One end of the screw is also fixedly connected to a drive shaft, and a drive gear is fixedly connected to the arc-shaped wall of the drive shaft. A drive rack is also slidably connected in the inner cavity of the rectangular support shell, and the drive rack and the drive gear mesh with each other. There is a linkage component connecting the transmission rack and the wear sensing mechanism.

[0014] Furthermore, the linkage component includes a first fixed cylinder and a second fixed cylinder; A first piston is slidably connected in the inner cavity of the first fixed cylinder. One end of the first guide rod is fixedly connected to one side of the first piston, and the other end of the first guide rod is fixedly connected to the hinge frame. The second fixed cylinder is fixedly installed on the side wall of the rectangular support shell. The second piston is slidably connected in the inner cavity of the second fixed cylinder. One end of the second guide rod is fixedly connected to one side of the second piston, and the other end of the second guide rod is fixedly connected to the transmission rack. The inner cavity of the second fixed cylinder is connected to the inner cavity of the first fixed cylinder via a connecting pipe.

[0015] In order to solve the technical problem in the prior art that the grinding wheel of a conventional CNC forming gear grinding machine will wear continuously during long-term use, requiring manual inspection and adjustment, resulting in low processing efficiency, this application designs a wear sensing and compensation structure integrated inside the machine tool. By using the up-and-down reciprocating motion of the grinding wheel itself as the trigger source, continuous compensation of the grinding process can be achieved without human intervention, thereby ensuring the stability of tooth depth accuracy of batch-processed gears, which is particularly suitable for high-precision forming gear grinding applications. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of one embodiment of this application; Figure 2 This is a three-dimensional structural diagram of a movable adjustment component according to an embodiment of this application; Figure 3 This is a schematic diagram of the structure of a gear grinding mechanism according to an embodiment of this application; Figure 4 This is a schematic diagram of the connection structure of a start-stop control structure according to an embodiment of this application; Figure 5 This is a schematic diagram of the structure of a wear sensing mechanism according to an embodiment of this application; Figure 6 This is a schematic diagram of the connection structure of a reference surface contact plate according to an embodiment of this application; Figure 7 This is a connection diagram of a displacement amplification structure according to an embodiment of this application; Figure 8 This is a schematic diagram of the structure of a linkage component according to an embodiment of this application; Figure 9 This is a schematic diagram of the structure of a wear compensation mechanism according to an embodiment of this application; Figure 10 This is one embodiment of the present application. Figure 9 A magnified schematic diagram of the structure at point A.

[0018] In the picture: 1. Fixed base; 101. Guide rail; 2. Moving adjustment assembly; 201. Moving base; 202. Positioning block; 203. Rectangular support shell; 204. Moving plate; 205. First ball screw; 206. Adjusting motor; 3. Gear rotation assembly; 301. Round base; 302. Gear clamp; 303. Rotary drive motor; 4. Tooth blank; 5. Grinding mechanism; 501. Fixed frame; 502. U-shaped fixed frame; 503. Linear guide rod; 504. Linear guide seat; 505. Grinding wheel support; 506. Grinding wheel; 507. Rotary motor; 508. Steel flange; 509. Second ball screw; 510. Drive motor; 6. Wear sensing mechanism; 601. Connecting frame; 602. Guide plate; 603. Guide seat; 604. Connecting rod; 605. Reference surface contact plate; 606. Magnetic suction part; 607. Moving rack; 608. Fixed leg; 609. Transmission rod; 610. Gear; 611. Long arm; 612. Connecting rod; 613. Hinge frame; 7. Linkage components; 701. First fixed cylinder; 702. First piston; 703. First guide rod; 704. Connecting pipe; 705. Second fixed cylinder; 706. Second piston; 707. Second guide rod; 8. Wear compensation mechanism; 801. Compensation moving block; 802. Screw; 803. Drive shaft; 804. Drive gear; 805. Drive rack; 9. Start / stop control structure; 901. Contact rod; 9011. First sleeve rod; 9012. Second sleeve rod; 9013. Connecting spring; 902. Press switch. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0020] Please see Figure 1 As shown, a CNC forming gear grinding machine includes: The movable adjustment component 2 includes a movable base 201, on which a gear rotation component 3 is provided. The gear rotation component 3 is used to clamp the gear blank 4 and drive it to rotate.

[0021] The gear grinding mechanism 5 includes a reciprocating linear guide 504, on which a rotatable grinding wheel 506 is provided for grinding the gear blank 4 clamped in the gear rotating assembly 3.

[0022] Wear sensing mechanism 6 is fixedly installed on the moving trajectory path of grinding wheel 506 and is used to sense the reduction in diameter of grinding wheel 506 due to wear.

[0023] The movable adjustment component 2 is also equipped with a wear compensation mechanism 8. The wear compensation mechanism 8 is connected to the wear sensing mechanism 6 through a linkage component 7. It is used to drive the movable adjustment component 2 to make micro-movements according to the sensed wear amount, so as to compensate for the impact of the reduction of the grinding wheel diameter on the grinding depth.

[0024] This application uses the reciprocating motion of the grinding wheel itself as a trigger source, which can achieve continuous compensation in the grinding process without human intervention, thereby ensuring the stability of tooth depth accuracy of batch-processed gears, and is particularly suitable for high-precision forming gear grinding applications.

[0025] In one specific embodiment of this application, see [reference]. Figure 1 and Figure 2 As shown, the movable seat 201 is disposed on the upper surface of the fixed base 1 and slides in conjunction with the fixed base 1. Specifically, a guide rail 101 is provided on the upper surface of the fixed base 1, and a sliding groove that cooperates with the guide rail 101 is provided on the bottom of the movable seat 201 to form a sliding pair, so that the movable seat 201 can move in a horizontal direction parallel to the axis of the tooth blank 4.

[0026] Furthermore, a positioning block 202 is fixedly provided on the upper surface of the movable seat 201, and a rectangular support shell 203 is fixedly connected to the upper surface of the positioning block 202. A movable moving plate 204 is provided on the upper surface of the rectangular support shell 203, and a gear rotating assembly 3 is fixedly connected to the upper surface of the moving plate 204 for bearing and driving the gear blank 4 to rotate.

[0027] As a preferred technical solution, in order to adjust the position of the workpiece, an adjusting motor 206 is also fixedly installed on the upper surface of the fixed base 1. The output shaft of the adjusting motor 206 is fixedly connected to a first ball screw 205. A screw nut that cooperates with the first ball screw 205 is provided on the positioning block 202, forming a precision linear feed drive pair.

[0028] With this technical solution, when the regulating motor 206 is started, it can drive the first ball screw 205 to rotate, thereby driving the positioning block 202 and the entire upper structure that are threadedly engaged with it to move along the guide slide rail 101, thereby driving the gear rotating assembly 3 and the gear blank 4 to achieve horizontal tool setting adjustment and indexing positioning.

[0029] In a preferred embodiment of this application, see [reference] Figure 2 As shown, the gear rotation assembly 3 includes a circular seat 301, a gear clamp 302, and a rotation drive motor 303. The circular seat 301 is fixedly mounted on the upper surface of the moving plate 204. The gear clamp 302 is rotatably connected to the upper surface of the circular seat 301 through a high-precision bearing, forming a stable workpiece rotation support.

[0030] A rotary drive motor 303 is also fixedly installed at the round base 301. The rotary drive motor 303 is connected to the gear clamp 302 through a synchronous belt or gear set to form a workpiece rotation drive mechanism, which is used to precisely control the rotation angle of the gear blank 4 during the grinding process.

[0031] Through the above technical solution, when the rotary drive motor 303 is working, it can drive the gear clamp 302 and the gear blank 4 clamped therein to rotate synchronously, thereby processing a complete gear tooth profile under the forming grinding of the grinding wheel 506.

[0032] In a preferred embodiment of this application, see [reference] Figure 3 As shown, the gear grinding mechanism 5 also includes a fixed frame 501, a U-shaped fixed frame 502 and a linear guide rod 503. The fixed frame 501 is fixedly installed on the upper surface of the fixed base 1, and the U-shaped fixed frame 502 is fixedly connected to the side wall of the fixed frame 501.

[0033] A linear guide rod 503 is fixedly connected between the upper and lower ends of the U-shaped fixing bracket 502. The linear guide rod 503 passes through the linear guide seat 504 and slides with the linear guide seat 504 through a linear bearing to form a high-rigidity vertical guide pair.

[0034] Furthermore, a grinding wheel bracket 505 is fixedly connected to the side wall of the linear guide 504. One end of the grinding wheel bracket 505 is rotatably connected to the grinding wheel 506 through a spindle bearing. A rotary motor 507 is fixedly installed on the side wall of the grinding wheel bracket 505. The output shaft end of the rotary motor 507 is fixedly connected to the rotating shaft of the grinding wheel 506 through a coupling, forming the main drive mechanism of the grinding wheel. Through this technical solution, when the rotary motor 507 is started, it can drive the grinding wheel 506 to rotate at high speed, thereby obtaining the required grinding speed.

[0035] Furthermore, in order to achieve precise vertical feed of the grinding wheel 506, a second ball screw 509 is rotatably connected between the upper and lower ends of the U-shaped fixing bracket 502, and a screw nut that cooperates with the second ball screw 509 is provided on the linear guide 504, forming a vertical feed drive pair.

[0036] A drive motor 510 is also fixedly installed at the upper end of the U-shaped fixing bracket 502. The output shaft end of the drive motor 510 is fixedly connected to one end of the second ball screw 509 through a coupling to form a vertical drive source for the grinding wheel.

[0037] With this technical solution, when the drive motor 510 starts, it can drive the second ball screw 509 to rotate, thereby driving the linear guide seat 504 and the entire grinding wheel assembly to reciprocate vertically along the linear guide rod 503, thereby realizing the cutting, grinding and retraction actions of the gear blank 4.

[0038] In a preferred embodiment of this application, see [reference] Figure 5 and Figure 6 As shown, the wear sensing mechanism 6 includes a connecting frame 601, a guide plate 602, a guide seat 603, and a reference surface contact plate 605.

[0039] The connecting frame 601 is fixedly installed on the side of the fixed frame 501. A guide plate 602 is fixedly connected to the connecting frame 601. The guide plate 602 is located above the moving trajectory of the grinding wheel 506 and is fixedly installed. A guide seat 603 is slidably connected to the guide plate 602. Specifically, in order to provide low friction and high precision guidance, the guide plate 602 is provided with a precision guide groove, and the bottom of the guide seat 603 is provided with a protrusion that matches the guide groove. The two slide together to form a horizontal guide mechanism.

[0040] One end of a connecting rod 604 is fixedly connected to the side wall of the guide seat 603, and the other end of the connecting rod 604 is fixedly connected to a reference surface contact plate 605, which is used to contact the grinding wheel assembly to sense its position.

[0041] When the reference surface contact plate 605 is in its initial position, its inner detection plane is in contact with the grinding wheel 506 when it stops rotating and rises to its highest point.

[0042] Furthermore, in order to generate an adsorption force when the grinding wheel moves upward and contacts, a magnetic suction part 606 is fitted and fixedly provided on the side wall of the reference surface contact plate 605, and a steel flange 508 is provided on the side wall of the grinding wheel 506 to generate a magnetic attraction force with the magnetic suction part 606.

[0043] When the grinding wheel 506 stops rotating and moves up to near its highest point, the outer cylindrical surface of its steel flange 508 attracts the magnetic suction part 606, thereby transmitting the actual position of the outer contour of the grinding wheel in the horizontal direction to the reference surface contact plate 605. In turn, the movement of the guide seat 603 reflects the radial position change of the grinding wheel caused by wear.

[0044] As a preferred technical solution, in order to avoid wear or interference caused by the high-speed rotating grinding wheel contacting the reference surface plate, a start-stop control structure 9 is also provided at the grinding mechanism 5. The start-stop control structure 9 is used to control the grinding wheel 506 to stop rotating before it contacts the sensing mechanism on its upward movement.

[0045] The start / stop control structure 9 includes a contact rod 901 and a push switch 902. The contact rod 901 is fixedly installed on the side of the linear guide 504, forming a trigger component that moves up and down synchronously with the grinding wheel.

[0046] The push switch 902 is fixedly installed at the bottom end of the U-shaped bracket 502. The push switch 902 is electrically connected to the rotary motor 507 that drives the grinding wheel 506 through the machine tool control system. It is used to send a stop signal to the rotary motor 507 when the wheel is separated.

[0047] The contact rod 901 includes a first sleeve rod 9011 and a second sleeve rod 9012. The first sleeve rod 9011 and the second sleeve rod 9012 are slidably sleeved together to form a retractable buffer structure. A connecting spring 9013 is fixedly connected between the first sleeve rod 9011 and the second sleeve rod 9012 to provide buffering.

[0048] With this technical solution, when the linear guide 504 drives the grinding wheel 506 to move upward to near the highest point, the lower end of the contact rod 901 will separate from the push switch 902, triggering the rotary motor 507 to stop. Subsequently, after the grinding wheel stops due to inertia, it continues to move upward in a stationary state until its outer contour contacts the reference surface contact plate 605, thereby completing position sensing in a stationary state and avoiding errors caused by dynamic contact.

[0049] Furthermore, in order to amplify and transmit minute horizontal displacement signals, see [reference needed]. Figure 7As shown, the guide seat 603 is connected to a displacement amplification structure, which includes a moving rack 607, a transmission rod 609, and a gear 610.

[0050] A movable rack 607 is fixedly installed on the upper surface of the guide seat 603. Fixed feet 608 are fixedly connected to both sides of the upper surface of the connecting frame 601. A transmission rod 609 is rotatably connected to the fixed feet 608 via bearings. A gear 610 is fixedly connected to the arc-shaped wall of the transmission rod 609. The gear 610 meshes with the movable rack 607 to convert the horizontal linear motion of the guide seat 603 into the rotational motion of the transmission rod 609.

[0051] One end of the transmission rod 609 is fixedly connected to a long arm 611, one end of the long arm 611 is rotatably connected to one end of a connecting rod 612, and the other end of the connecting rod 612 is rotatably connected to a hinge frame 613, forming a lever amplification mechanism.

[0052] With this technical solution, when the guide seat 603 moves horizontally due to sensing the wear of the grinding wheel, it will drive the moving rack 607 to move, thereby driving the gear 610 and the transmission rod 609 to rotate. The rotation of the transmission rod 609 will cause the long arm 611 to swing, and then transmit the amplified displacement to the hinge frame 613 through the connecting rod 612.

[0053] In a preferred embodiment of this application, see [reference] Figure 9 As shown, the wear compensation mechanism 8 includes a compensation moving block 801 and a screw 802. The rectangular support shell 203 has an inner cavity. The compensation moving block 801 is disposed in the inner cavity of the rectangular support shell 203 and slides with the inner wall of the rectangular support shell 203 through a guide key or guide rail.

[0054] The compensation moving block 801 and the moving plate 204 are fixedly connected by a connector to form a synchronous moving relationship, so that the movement of the compensation moving block 801 can be directly transmitted to the moving plate 204 and the entire gear rotating assembly 3.

[0055] A screw 802 is rotatably connected to the inner cavity of the rectangular support shell 203 via a bearing. The screw 802 passes through the compensating moving block 801 and is threadedly engaged with the compensating moving block 801, so that the rotation of the screw 802 can be converted into the horizontal micro-motion of the compensating moving block 801.

[0056] Further, see Figure 10As shown, a drive shaft 803 is fixedly connected to one end of the screw 802, and a drive gear 804 is fixedly connected to the arc-shaped wall of the drive shaft 803. A drive rack 805 is also slidably connected in the inner cavity of the rectangular support shell 203. The drive rack 805 and the drive gear 804 mesh with each other to convert the horizontal linear motion of the drive rack 805 into the rotational motion of the drive gear 804 and the screw 802. A linkage component 7 is connected between the transmission rack 805 and the wear sensing mechanism 6, which is used to receive the displacement signal from the wear sensing mechanism 6 and drive the transmission rack 805 to move.

[0057] As a specific technical solution, the linkage component 7 includes a first fixed cylinder 701 and a second fixed cylinder 705.

[0058] The first fixed cylinder 701 is fixedly mounted on the upper surface of the fixed frame 501. The first piston 702 is slidably connected in the inner cavity of the first fixed cylinder 701. One end of the first guide rod 703 is fixedly connected to one side of the first piston 702. The other end of the first guide rod 703 is fixedly connected to the hinge frame 613, so that the output of the displacement amplification structure can drive the first piston 702 to move.

[0059] The second fixed cylinder 705 is fixedly installed on the side wall of the rectangular support shell 203. The second piston 706 is slidably connected in the inner cavity of the second fixed cylinder 705. One end of the second guide rod 707 is fixedly connected to one side of the second piston 706. The other end of the second guide rod 707 is fixedly connected to the transmission rack 805 to form a driving relationship.

[0060] Furthermore, the inner cavities of the second fixed cylinder 705 and the first fixed cylinder 701 are connected by a connecting pipe 704 to form a closed hydraulic circuit.

[0061] The inner cavities of both the second fixed cylinder 705 and the first fixed cylinder 701 are filled with incompressible hydraulic oil to achieve precise transmission and proportional amplification of displacement and force.

[0062] Through the above technical solution, when the wear of the grinding wheel causes the reference surface contact plate 605 and the guide seat 603 to move horizontally, the small displacement is amplified by the lever and pushed by the hinge frame 613 and the first guide rod 703 to push the first piston 702. The first piston 702 squeezes the hydraulic oil in the cylinder, and the hydraulic oil pushes the second piston 706 through the connecting pipe 704. The second piston 706 drives the transmission rack 805 to move through the second guide rod 707, which in turn drives the transmission gear 804 and the screw 802 to rotate. Finally, it drives the compensation moving block 801 and the moving plate 204 fixed thereto to move slightly towards the grinding wheel, so that the center distance between the tooth blank 4 and the grinding wheel 506 is reduced, thereby compensating for the radius lost by the grinding wheel due to wear and realizing the automatic recovery of the grinding depth.

[0063] Before using this application, it is necessary to calculate and set the arm length ratio of the displacement amplification structure and the area ratio of the two pistons in the hydraulic linkage mechanism based on the ratio of the theoretical wear amount of the grinding wheel radius to the required workpiece shaft compensation amount, so as to determine the transmission ratio of the entire system and realize the accurate conversion of the grinding wheel wear amount into the required workpiece shaft position compensation amount.

[0064] To ensure that the wear sensing and compensation signals are not distorted during transmission, all transmission components of this device, including the long arm hinge, gear and rack pair, and compensation screw, adopt high-precision structures.

[0065] The transmission system structure of this application can transmit and amplify minute wear signals. More importantly, this device is a closed-loop system based on physical contact: the starting point of each compensation cycle is the instant when the grinding wheel 506 contacts the reference surface contact plate 605. This contact action resets the absolute coordinate zero point of the system.

[0066] Therefore, the inherent, minor static errors in each component of the device, such as assembly gaps and geometric tolerances, will be "reset to zero" in this closed-loop operation. The final compensation accuracy of the device depends only on the accuracy of the repeated transmission of the displacement increment sensed in this cycle relative to the previous cycle, rather than the absolute positioning accuracy of the system as a whole. Through the above design, this device can achieve relatively reliable automatic wear compensation in practice.

[0067] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this application does not involve any improvement to the software and methods.

[0068] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A CNC forming gear grinding machine, characterized in that: include: The movable adjustment component (2) includes a movable base (201). Grinding mechanism (5), the grinding mechanism (5) includes a reciprocating linear guide (504), the linear guide (504) is provided with a rotatable grinding wheel (506) for grinding the gear blank (4); Wear sensing mechanism (6) is fixedly installed on the moving trajectory path of the grinding wheel (506) to sense the amount of diameter reduction of the grinding wheel (506) due to wear; The movable adjustment component (2) is also provided with a wear compensation mechanism (8), and the wear compensation mechanism (8) is connected to the wear sensing mechanism (6) through a linkage component (7).

2. The CNC forming gear grinding machine according to claim 1, characterized in that: A positioning block (202) is fixedly provided on the upper surface of the movable seat (201), and a rectangular support shell (203) is fixedly connected to the upper surface of the positioning block (202). A movable moving plate (204) is provided on the upper surface of the rectangular support shell (203).

3. The CNC forming gear grinding machine according to claim 2, characterized in that: The gear grinding mechanism (5) also includes a fixed frame (501), a U-shaped fixed frame (502) and a linear guide rod (503), and the U-shaped fixed frame (502) is fixedly connected to the side wall of the fixed frame (501). A linear guide rod (503) is fixedly connected between the upper and lower ends of the U-shaped fixing frame (502). The linear guide rod (503) passes through the linear guide seat (504) and slides with the linear guide seat (504). A grinding wheel bracket (505) is fixedly connected to the side wall of the linear guide (504). A grinding wheel (506) is rotatably connected to one end of the grinding wheel bracket (505). A rotary motor (507) is fixedly installed on the side wall of the grinding wheel bracket (505). The output shaft end of the rotary motor (507) is fixedly connected to the grinding wheel (506).

4. The CNC forming gear grinding machine according to claim 2, characterized in that: The wear sensing mechanism (6) includes a connecting frame (601), a guide plate (602), a guide seat (603), and a reference surface contact plate (605). A guide plate (602) is fixedly connected to the connecting frame (601). The guide plate (602) is located above the moving trajectory of the grinding wheel (506) and is fixedly installed. A guide seat (603) is slidably connected to the guide plate (602). One end of a connecting rod (604) is fixedly connected to the side wall of the guide seat (603). The other end of the connecting rod (604) is fixedly connected to a reference surface contact plate (605) for contacting the grinding wheel assembly to sense its position.

5. The CNC forming gear grinding machine according to claim 4, characterized in that: A magnetic suction part (606) is fitted and fixedly provided on the side wall of the reference surface contact plate (605), and a steel flange (508) is provided on the side wall of the grinding wheel (506) for generating magnetic attraction with the magnetic suction part (606).

6. The CNC forming gear grinding machine according to claim 4, characterized in that: The guide seat (603) is connected to a displacement amplification structure, which includes a movable rack (607), a transmission rod (609), and a gear (610). A movable rack (607) is fixedly provided on the upper surface of the guide seat (603), and a transmission rod (609) is rotatably connected to the upper surface of the connecting frame (601). A gear (610) is fixedly connected to the arc-shaped wall of the transmission rod (609), and the gear (610) meshes with the movable rack (607). One end of the transmission rod (609) is fixedly connected to a long arm (611), one end of the long arm (611) is rotatably connected to one end of a connecting rod (612), and the other end of the connecting rod (612) is rotatably connected to a hinge frame (613).

7. The CNC forming gear grinding machine according to claim 2, characterized in that: The wear compensation mechanism (8) includes a compensation moving block (801) and a screw (802). The rectangular support shell (203) has an internal cavity. The compensation moving block (801) is disposed in the internal cavity of the rectangular support shell (203) and slides against the inner wall of the rectangular support shell (203). The compensation moving block (801) is fixedly connected to the moving plate (204).

8. The CNC forming gear grinding machine according to claim 7, characterized in that: A screw (802) is rotatably connected to the inner cavity of the rectangular support shell (203) via a bearing. The screw (802) passes through the compensation moving block (801) and is threadedly engaged with the compensation moving block (801). One end of the screw (802) is also fixedly connected to a drive shaft (803), and a drive gear (804) is fixedly connected to the arc-shaped wall of the drive shaft (803). A drive rack (805) is also slidably connected in the inner cavity of the rectangular support shell (203), and the drive rack (805) and the drive gear (804) mesh with each other. A linkage component (7) is connected between the transmission rack (805) and the wear sensing mechanism (6).

9. The CNC forming gear grinding machine according to claim 8, characterized in that: The linkage component (7) includes a first fixed cylinder (701) and a second fixed cylinder (705); A first piston (702) is slidably connected in the inner cavity of the first fixed cylinder (701). One end of a first guide rod (703) is fixedly connected to one side of the first piston (702), and the other end of the first guide rod (703) is fixedly connected to the hinge frame (613). The second fixed cylinder (705) is fixedly installed on the side wall of the rectangular support shell (203). The second piston (706) is slidably connected in the inner cavity of the second fixed cylinder (705). One end of the second guide rod (707) is fixedly connected to one side of the second piston (706). The other end of the second guide rod (707) is fixedly connected to the transmission rack (805). The inner cavity of the second fixed cylinder (705) and the first fixed cylinder (701) are connected by a connecting pipe (704).

10. The CNC forming gear grinding machine according to claim 3, characterized in that: The gear grinding mechanism (5) is also provided with a start-stop control structure (9), which includes a contact rod (901) and a push switch (902); the contact rod (901) is fixedly installed on the side of the linear guide (504); The push switch (902) is fixedly installed at the bottom of the U-shaped bracket (502). The push switch (902) is electrically connected to the rotary motor (507) and is used to send a stop signal to the rotary motor (507) when the push switch (902) is separated from the contact rod (901).

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