A machine tool feed system dynamic torque detection device and method

Abstract

The present application relates to the technical field of dynamic torque detection, and particularly relates to a machine tool feeding system dynamic torque detection device and method, which comprises a base, a dynamic torque sensor, a feeding mechanism, a pressure applying mechanism and a traction mechanism; the pressure applying mechanism comprises a pulley frame, a downward driving, a downward clamping seat and a feeding mounting seat; the downward driving is connected with the downward clamping seat to simulate a horizontal load working condition, indirectly apply a reverse traction force to the feeding mounting seat, avoid overturning moment caused by direct connection of the traction rope and the feeding mounting seat, ensure stable and reliable detection process, improve accuracy of detection results, reduce wear and tear, and improve service life; meanwhile, the downward driving applies a downward pressure to the feeding mounting seat to meet detection requirements under horizontal and vertical direction load conditions, so that the detection results are more comprehensive and effective; meanwhile, the downward driving is matched with the base through the pulley frame to avoid manual load adjustment, reduce operation difficulty, and improve detection efficiency.

Description

Technical Field

[0001] This invention relates to the field of dynamic torque detection technology, and specifically to a dynamic torque detection device and method for a machine tool feed system. Background Technology

[0002] The dynamic torque of a machine tool feed system is a core parameter reflecting its transmission accuracy, load-bearing capacity, and operational stability, directly affecting workpiece machining quality and equipment lifespan. Currently, the industry commonly uses an external load simulation device in conjunction with a torque sensor for dynamic torque detection. The core principle is to apply reverse resistance to the feed mounting base through the load device to simulate actual machining conditions, and then collect the torque response data of the transmission chain through the torque sensor.

[0003] The existing load application methods of detection devices mainly have the following conventional designs: First, the protective structure of the feed system needs to be manually disassembled, and the connecting parts of the load device are bolted to the feed mounting base for positioning and calibration. The detection is started only after the load is assembled. Second, the load traction mechanism is usually directly and rigidly connected to the feed mounting base, and a horizontal reverse traction force is applied through the traction rope to simulate cutting resistance. Third, the load device can usually only provide load simulation in a single direction, and it mainly simulates horizontal resistance.

[0004] In existing technologies, since the traction rope is directly fixed to the feed mounting seat, the mounting seat is prone to overturning torque due to factors such as installation deviation and fluctuations in the traction direction during the traction process. This causes the mounting seat to tilt during the traction process, resulting in an external force at the drive connection of the mounting seat (such as the lead screw and coupling) that forms an angle with the axial direction, causing local wear during the traction process. At the same time, the overturning torque will disrupt the stable contact between the feed mounting seat and the guide rail, causing fluctuations in the friction coefficient, interfering with the signal acquisition of the torque sensor, and resulting in low accuracy of dynamic torque detection. Furthermore, existing load devices can mostly only simulate cutting resistance in a single direction, resulting in an incomplete detection range that cannot meet the actual application requirements. Summary of the Invention

[0005] The purpose of this invention is to provide a dynamic torque detection device and method for machine tool feed systems, thereby solving the technical problem of low reliability of existing torque detection devices.

[0006] The solution of the present invention to the above-mentioned technical problems is as follows: A dynamic torque detection device for a machine tool feed system includes a base, a dynamic torque sensor, a feed mechanism, a pressure application mechanism, and a traction mechanism; the pressure application mechanism includes a pulley frame, a downward drive, a downward clamping seat, and a feed mounting seat. The dynamic torque sensor works in conjunction with the feeding mechanism. The feeding mounting base is slidably connected to the base via the feeding mechanism. The traction mechanism is movably connected to the fixed end of the downward drive. The fixed end of the downward drive is movably connected to the base via a pulley frame. The pulley frame is sleeved on the outside of the feeding mounting base. The downward clamp is located directly above the feeding mounting base and connected to the output end of the downward drive.

[0007] Further specified, the feeding mechanism includes a feed motor, a feed screw, and a mounting base guide rail; The fixed end of the feed motor is connected to the drive end of the base. The output end of the feed motor is connected to one end of the feed screw through a dynamic torque sensor. The outer wall of the dynamic torque sensor is connected to the base. The other end of the feed screw is rotatably connected to the traction end of the base. The mounting base guide rail is set on the base along the length direction of the feed screw. The feed mounting base is sleeved on the outside of the feed screw and threadedly connected to the feed screw. The bottom of the feed mounting base cooperates with the mounting base guide rail.

[0008] Further defining the downward drive, the drive body includes a drive body and a drive frame. The drive frame is sleeved on the outside of the drive body and connected to the fixed end of the drive body. The drive body is vertically arranged, and the output end of the drive body is connected to the top of the downward pressure seat. The pulley frame is connected to the top of the drive frame.

[0009] Further defined, the lower surface of the pressing seat is provided with multiple locking strips, the locking strips are set perpendicular to the moving direction of the feed mounting seat, and the multiple locking strips are set at equal intervals along the moving direction of the feed mounting seat; the upper surface of the feed mounting seat is provided with multiple locking slots, the locking slots match the locking strips, and the multiple locking slots are set at equal intervals along the moving direction of the feed mounting seat.

[0010] Furthermore, the dynamic torque detection device for the machine tool feed system also includes a locking mechanism; The locking mechanism is located at the locking position of the base and is movably connected to the traction end of the base. The locking mechanism cooperates with the pulley frame to limit or release the pulley frame located at the locking position.

[0011] Further defined, the locking mechanism includes an elastic follower, a stabilizing pulley frame, an extension connecting frame, and a locking unit; The stabilizing pulley frame has an L-shaped structure. The horizontal section of the stabilizing pulley frame is slidably connected to the base, and the vertical section of the stabilizing pulley frame is located outside the traction end of the base. The contact end of the elastic follower is directly opposite the side wall of the feed mounting seat, and the connecting end of the elastic follower extends through the traction end of the base to connect with the vertical section of the stabilizing pulley frame. The feed mounting seat is used to push the stabilizing pulley frame to move through the elastic follower. The fixed end of the extension connecting frame is connected to the vertical section of the stabilizing pulley frame, and the movable end of the extension connecting frame is located on the side of the pulley frame along the length direction of the base. The movable end of the locking unit is movably connected to the movable end of the extension connecting frame. The reciprocating movement of the stabilizing pulley frame causes the locking unit to move closer to or away from the locking position of the pulley frame.

[0012] Further specified, the base sidewall is provided with a pulley guide rail, and the pulley bracket is located between the pulley guide rail and the base and cooperates with the pulley guide rail; The locking unit includes a pull linkage, a locking plate, and a return spring; the pulley guide rail is provided with a shrinkage hole, which is located at the locking position; The extension connecting frame is located outside the pulley guide rail. The pulling link includes an arc segment and a strip segment connected to the arc segment. The arc segment is rotatably connected to the movable end of the extension connecting frame around a vertical axis. The strip segment is movably connected to the connecting end of the locking plate. The locking end of the locking plate passes through the contraction hole and is close to the side wall of the base. One end of the return spring is connected to the connecting end of the locking plate, and the other end of the return spring is connected to the side wall of the pulley guide rail.

[0013] Further defined, the traction mechanism includes a traction rope, a rope guide carriage, a main wheel frame, a main pulley, a secondary pulley, a straightening unit, and a traction device; Both the main wheel frame and the guide rope slide are connected to the traction end of the base. The guide rope slide is inclined, and the straightening unit is movably connected to the guide rope slide. Both the main pulley and the auxiliary pulley are rotatably connected to the main wheel frame. The traction device is located outside the guide rope slide. One end of the traction rope is connected to the output end of the traction device, and the other end of the traction rope passes through the main pulley, the straightening unit, and the auxiliary pulley in sequence before being movably connected to the fixed end of the downward drive.

[0014] Further defined, the straightening unit includes a guide rope wheel, a spring connector, and a guide rope spring; the guide rope slide has a guide rope groove, the guide rope slide is located between the guide rope wheel and the spring connector, and the traction rope is engaged with the lower side of the guide rope wheel; The guide rope groove is opened along the length of the guide rope slide, the guide rope wheel is movably connected to the guide rope groove, the spring connector is rotatably connected to the guide rope wheel along the axis of the guide rope wheel, and the guide rope spring is connected between the spring connector and the bottom of the guide rope slide.

[0015] A method for dynamic torque detection in a machine tool feed system, based on the aforementioned dynamic torque detection device for a machine tool feed system, includes the following steps: The feed mechanism moves the feed mounting base to directly below the downward drive; The downward drive moves the downward pressure bracket downward, applying downward pressure to the feed mounting seat; The traction mechanism applies traction force to the downward drive according to the detection requirements; The feed mechanism drives the feed mounting base, which in turn moves the downward drive on the base. Data is collected and torque is determined using a dynamic torque sensor.

[0016] The beneficial effects of this invention are as follows: 1. The traction mechanism of this invention connects to the downward pressure bracket via a downward pressure drive, simulating a horizontal load condition. This indirectly applies a reverse traction force to the feed mounting seat, avoiding the overturning moment caused by the direct connection between the traction rope and the feed mounting seat. This ensures a stable and reliable testing process, improves the accuracy of test results, reduces wear, and extends service life. Simultaneously, the downward pressure drive applies downward pressure to the feed mounting seat, meeting the testing requirements under both horizontal and vertical load conditions, resulting in more comprehensive and effective test results. Furthermore, the downward pressure drive, through the pulley bracket and base, eliminates the need for manual load adjustment, reducing operational difficulty and improving testing efficiency.

[0017] 2. By adding a locking mechanism, the present invention limits the position of the pulley frame to the locking position, which facilitates the movement of the feed mounting seat to the corresponding position to cooperate with the pressing seat, thereby improving work efficiency and ensuring the reliability of the cooperation between the two; at the same time, it can also limit the pulley frame during transportation to avoid damage to the pressing drive and the pressing seat by shaking.

[0018] 3. This invention improves the reliability of the fit between the two by setting a retaining strip at the bottom of the pressure seat and a retaining groove on the feed mounting seat, thereby achieving effective transmission of horizontal load.

[0019] 4. The traction mechanism of the present invention, by setting up a traction device, uses the guide rope spring and the spring connector to apply a downward pulling force to the guide rope wheel, and tensions the traction rope in real time, so as to prevent the traction rope from loosening and disengaging from the main pulley and the auxiliary pulley. At the same time, it also prevents the traction device from getting tangled when retrieving the traction rope, thereby further improving the reliability of detection and ensuring the service life of the detection device. Attached Figure Description

[0020] Figure 1 This is a structural diagram of the dynamic torque detection device for the machine tool feed system in Embodiment 1 of the present invention; Figure 2 for Figure 1 Enlarged diagram of part A in the middle; Figure 3 This is a structural diagram of the traction mechanism in Embodiment 1 of the present invention; Figure 4 for Figure 3 Enlarged diagram of section B; Figure 5 This is a partial structural diagram of the dynamic torque detection device for the machine tool feed system in Embodiment 3 of the present invention; Figure 6 This is a structural diagram of the positioning mechanism in Embodiment 3 of the present invention.

[0021] In the diagram, 100-base; 110-pulley guide rail; 111-contraction hole; 120-traction baffle; 200-dynamic torque sensor; 300-feed mechanism; 310-feed motor; 320-feed screw; 330-mounting guide rail; 400-pressure mechanism; 410-pulley frame; 420-downward drive; 421-drive body; 422-drive frame; 423-traction connector; 430-downward clamp; 440-feed mounting base; 5 00-Locking mechanism; 510-Elastic follower; 520-Stabilizing pulley frame; 530-Extension connecting frame; 540-Locking unit; 541-Pull linkage; 542-Locking plate; 543-Reset spring; 600-Traction mechanism; 610-Traction rope; 620-Rope guide slide; 621-Rope guide groove; 630-Main wheel frame; 631-Main pulley; 632-Secondary pulley; 640-Rope guide wheel; 641-Spring connector; 642-Rope guide spring. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] Example 1 refer to Figure 1 and Figure 2 The present invention provides a dynamic torque detection device for a machine tool feed system, including a base 100, a dynamic torque sensor 200, a feed mechanism 300, a pressure mechanism 400, and a traction mechanism 600; the pressure mechanism 400 includes a pulley frame 410, a downward drive 420, a downward clamping seat 430, and a feed mounting seat 440.

[0027] Specifically, the base 100 is mounted on the operating platform to ensure its stability. The feed mounting seat 440 is connected to the top of the base 100 and slides along the length of the base 100. The feed mechanism 300 is located on the base 100 near the drive end of the base 100. The base 100 is located between the feed mechanism 300 and the traction mechanism 600. The feed mechanism 300 is used to drive the feed mounting seat 440 to reciprocate. The traction mechanism 600 is located at the traction end of the base 100 and provides a horizontal load for the feed mounting seat 440. The dynamic torque sensor 200 works with the feed mechanism 300 to perform real-time dynamic torque detection.

[0028] To avoid overturning torque on the feed mounting base 440 when the traction rope 610 in the traction mechanism 600 is directly connected to the feed mounting base 440, it is preferable that the traction rope 610 is connected to the feed mounting base 440 through the downward drive 420 and the downward clamp 430. With the cooperation of the pulley frame 410, the downward pressure provided by the downward drive 420 compensates for the upward component force generated by the traction rope 610 on the feed mounting base 440, ensuring that the feed mounting base 440 maintains parallel movement as much as possible during the movement, avoiding squeezing with the surrounding structure, and further avoiding the wear caused by the overturning torque, which would cause fluctuations in the test results and reduce the accuracy and precision of the test results.

[0029] The top of the downward drive 420 is connected to the base 100 via a pulley frame 410, which is fitted onto the outside of the feed mounting base 440. The pulley frame 410 has an n-shaped structure, and load pulley groups are provided at the bottom of the vertical rods on both sides of the pulley frame 410 to cooperate with the base 100. The load pulley groups include bottom pulleys and top pulleys. The top pulleys are used to support the pulley frame 410, the downward drive 420, and the downward clamping base 430. The bottom pulleys are used to cooperate with the base 100 to form a reaction force when the downward drive 420 applies vertical downward pressure to the feed mounting base 440, ensuring that the movement of the pulley frame 410 is stable and reliable.

[0030] Specifically, pulley guide rails 110 are provided on both opposite sides of the base 100. The pulley guide rails 110 are arranged along the length of the base 100. The top pulley and the bottom pulley are respectively arranged on the upper and lower sides of the pulley guide rails 110. Preferably, a guide groove is reserved between the pulley guide rails 110 and the side wall of the base 100. The vertical rod of the pulley frame 410 passes through the guide groove and is slidably connected to the guide groove. At this time, the load pulley group is located outside the vertical rod.

[0031] Preferably, there are two pulley frames 410, which are spaced apart on the front and rear sides of the downward drive 420 to ensure the force balance of the downward drive 420. The downward drive 420 can push the downward clamp 430 to move downward and contact the feed mounting seat 440. Under the vertical limit, the pulley frame 410 can apply downward pressure to the feed mounting seat 440 as a vertical load, so that the horizontal load applied by the traction rope 610 can be transmitted to the feed mounting seat 440. The feed mechanism 300 drives the feed mounting seat 440 to move while driving the pulley frame 410 to move, thereby realizing dynamic torque detection under horizontal and vertical load conditions. This conforms to the actual force state of the machine tool during processing, adapts to the actual working environment, improves the reliability of the detection results, and the load adjustment is convenient and quick, avoiding manual replacement of the vertical load, further improving detection efficiency and meeting detection requirements.

[0032] Preferably, to ensure a reliable connection between the pressure holder 430 and the feed mounting base 440, multiple locking strips are arranged on the lower surface of the pressure holder 430. The locking strips are set perpendicular to the moving direction of the feed mounting base 440, i.e., the width direction of the base 100. The multiple locking strips are evenly spaced along the moving direction of the feed mounting base 440. Correspondingly, multiple slots are formed on the upper surface of the feed mounting base 440. The multiple slots are evenly spaced along the moving direction of the feed mounting base 440. The slots match the locking strips, so that the movement between the two can be synchronized. This avoids slippage between the pressure holder 430 and the feed mounting base 440 in the moving direction during the testing process, which would cause unstable horizontal load and further improve the reliability of the testing results.

[0033] To further explain, the feed mechanism 300 includes a feed motor 310, a feed screw 320, and a mounting guide rail 330. The fixed end of the feed motor 310 is connected to the drive end of the base 100, and the output end of the feed motor 310 is connected to one end of the feed screw 320 through a dynamic torque sensor 200. The output end of the feed motor 310 and the corresponding end of the feed screw 320 are both connected to the dynamic torque sensor 200 through a coupling. The outer wall of the dynamic torque sensor 200 is connected to the base 100 to ensure stability during the detection process and prevent shaking.

[0034] A traction baffle 120 is vertically installed at the traction end of the base 100. The other end of the feed screw 320 is rotatably connected to the traction baffle 120. The feed screw 320, the dynamic torque sensor 200, and the feed motor 310 are all coaxially arranged. The mounting guide rail 330 is arranged on the base 100 along the length direction of the feed screw 320. Preferably, there are two mounting guide rails 330. The two mounting guide rails 330 are located on opposite sides of the feed screw 320 and are parallel to the feed screw 320. The feed mounting seat 440 is sleeved on the outside of the feed screw 320 and threadedly connected to the feed screw 320. The opposite sides of the bottom of the feed mounting seat 440 cooperate with the mounting guide rail 330, so that the feed motor 310 rotates and drives the feed screw 320 to rotate, which in turn drives the feed mounting seat 440 to move along the length direction of the mounting guide rail 330.

[0035] To further explain, the downward drive 420 includes a drive body 421 and a drive frame 422. The drive frame 422 is sleeved on the outside of the drive body 421 and connected to the fixed end of the drive body 421. The drive body 421 is vertically arranged. The output end of the drive body 421 is connected to the top of the downward card holder 430. The pulley frame 410 is connected to the top of the drive frame 422.

[0036] The downward drive 420 is preferably located in the middle of the pulley frame 410. The drive body 421 extends to drive the downward clamp 430 to move downward and cooperate with the feed mounting seat 440, so as to facilitate the transfer of horizontal load to the feed mounting seat 440. The drive body 421 continues to extend to drive the downward clamp 430 to apply downward pressure to the feed mounting seat 440 to form a vertical load. The load pulley group cooperates with the pulley guide rail 110 to ensure the stability and controllability of the vertical load.

[0037] The drive frame 422 is provided with a traction connector 423. The traction connector 423 faces the traction mechanism 600 and is used to connect with the corresponding end of the traction rope 610. The traction connector 423 includes a collar and a traction rod. The traction rod is connected to the drive frame 422 in the horizontal direction. The collar is sleeved on the traction rod, so that the collar can rotate around the axis of the traction rod and slide along the length of the traction rod. The collar is connected to the end of the traction rope 610.

[0038] Example 2 refer to Figure 3 and Figure 4Based on the dynamic torque detection device for a machine tool feed system described in Embodiment 1, this embodiment provides a dynamic torque detection device for a machine tool feed system. The traction mechanism 600 includes a traction rope 610, a rope guide carriage 620, a main wheel frame 630, a main pulley 631, a secondary pulley 632, a straightening unit, and a traction device. To prevent the traction rope 610 from becoming loose, which could cause the traction device to retract the traction rope 610 or the traction rope 610 to become knotted or entangled in the external structure when the feed screw 320 rotates, the straightening unit can be used to tension the traction rope 610, thereby improving the overall service life and ensuring stable and efficient detection.

[0039] Specifically, the main wheel frame 630 is vertically installed on the top of the traction baffle 120. The top of the main wheel frame 630 is provided with a pulley groove, which is directly opposite the traction connector 423. The main pulley 631 is installed on the upper side of the pulley groove and is rotatably connected to the pulley groove. The auxiliary pulley 632 is installed on the lower side of the pulley groove and is rotatably connected to the pulley groove.

[0040] The guide rope slide 620 is located outside the traction baffle 120. The bottom of the guide rope slide 620 is connected to the bottom of the base 100. The guide rope slide 620 is inclined, and the top of the guide rope slide 620 faces between the main pulley 631 and the auxiliary pulley 632. The straightening unit is movably connected to the guide rope slide 620. The traction device is located outside the guide rope slide 620. One end of the traction rope 610 is connected to the output end of the traction device. The other end of the traction rope 610 passes through the main pulley 631, the straightening unit and the auxiliary pulley 632 in sequence and is movably connected to the traction connector 423. The straightening unit moves downward along the guide rope slide 620 to tension the traction rope 610.

[0041] To further explain, the straightening unit includes a rope pulley 640, a spring connector 641, and a rope spring 642; a rope guide slide 620 is provided with a rope guide groove 621, the rope guide slide 620 is located between the rope pulley 640 and the spring connector 641, and the traction rope 610 is engaged with the lower side of the rope pulley 640.

[0042] The rope guide groove 621 is formed on the side wall of the rope guide slide 620 along the length direction of the rope guide slide 620. The rope guide wheel 640 is movably connected to the rope guide groove 621 through the connecting shaft, so that the rope guide wheel 640 can rotate around the connecting shaft in the rope guide groove 621 and slide along the length direction of the rope guide groove 621. The connecting shaft passes through the rope guide groove 621 and is rotatably connected to the spring connector 641. The rope spring 642 is connected between the spring connector 641 and the bottom of the rope guide slide 620.

[0043] Preferably, to ensure stable and reliable tensioning of the traction rope 610, two rope guides 620, two spring connectors 641, and two rope springs 642 are used. The two rope guides 620 are arranged in the same direction, and the rope pulley 640 is located between the two rope guides 620. At this time, the two sides of the connecting shaft extend to the outer side of the corresponding rope groove 621 and are connected to the rope springs 642 through the spring connectors 641, so that the rope pulley 640 is balanced on both sides. When the traction rope 610 is loose, the rope spring 642 drives the rope pulley 640 to move downward along the rope groove 621, increasing the distance between the rope pulley 640 and the main pulley 631 and the auxiliary pulley 632, thereby ensuring the tension of the traction rope 610, improving service life and detection reliability.

[0044] Example 3 refer to Figure 4 and Figure 5 Based on the dynamic torque detection device for machine tool feed system described in Embodiment 1 or 2, this embodiment provides a dynamic torque detection device for machine tool feed system, which also includes a locking mechanism 500 for limiting the pulley frame 410 at the locking position. By limiting the pulley frame 410, on the one hand, it can prevent the pulley frame 410 from moving unrestrained and being damaged by sliding collisions during transportation; on the other hand, it can set the initial position of the pressing seat 430, so as to control the feed mounting seat 440 to move to this position and face the pressing seat 430, so that the locking strip and the locking groove are aligned. The pressing drive 420 drives the pressing seat 430 to directly cooperate with the feed mounting seat 440, avoiding manual alignment, reducing the difficulty of operation, and improving the efficiency of operation.

[0045] The locking mechanism 500 is located at the locking position of the base 100. The locking mechanism 500 is movably connected to the traction end of the base 100. The locking mechanism 500 cooperates with the pulley frame 410 to limit or release the pulley frame 410 located at the locking position.

[0046] Specifically, the positioning mechanism 500 includes an elastic follower 510, a stabilizing pulley frame 520, an extension connecting frame 530, and a positioning unit 540. The stabilizing pulley frame 520 has an L-shaped structure. The horizontal section of the stabilizing pulley frame 520 extends into the base 100 and is slidably connected to the base 100. The vertical section of the stabilizing pulley frame 520 is located outside the traction baffle 120. The stabilizing pulley frame 520 can approach or move away from the traction baffle 120.

[0047] The contact end of the elastic follower 510 is directly opposite the side wall of the feed mounting base 440. When the feed mounting base 440 moves closer to the traction baffle 120, it can contact the contact end of the elastic follower 510. The connecting end of the elastic follower 510 extends through the traction baffle 120 to the outside of the traction baffle 120 and connects with the vertical section of the stabilizing pulley frame 520. A compression spring is provided between the contact end of the elastic follower 510 and the traction baffle 120, so that the feed mounting base 440 can push the elastic follower 510 closer to the traction baffle 120. In this process, the stabilizing pulley frame 520 is driven away from the traction baffle 120. After the feed mounting base 440 moves away from the elastic follower 510, the elastic follower 510 can move in the opposite direction under the action of the compression spring, so that the stabilizing pulley frame 520 moves closer to the traction baffle 120.

[0048] The fixed end of the extension connecting frame 530 is connected to the vertical section of the stabilizing pulley frame 520. The movable end of the extension connecting frame 530 is located on the side of the pulley frame 410 along the length direction of the base 100. The movable end of the locking unit 540 is movably connected to the movable end of the extension connecting frame 530. The reciprocating movement of the stabilizing pulley frame 520 drives the locking unit 540 to move closer to or away from the locking position of the pulley frame 410, thereby limiting or releasing the position of the locking position of the pulley frame 410.

[0049] Preferably, in order to ensure the force balance of the elastic follower 510, the number of the stabilizing pulley frame 520, the extension connecting frame 530 and the locking unit 540 are all two and are symmetrically arranged on opposite sides of the elastic follower 510.

[0050] To further explain, the locking unit 540 includes a pull rod 541, a locking plate 542, and a return spring 543; the pulley guide rail 110 is provided with a shrinkage hole 111, which is located at the locking position.

[0051] The extension connecting frame 530 is located outside the pulley guide rail 110. In order to make the retraction length of the positioning plate 542 correspond to the movement length of the elastic follower 510, the pulling link 541 includes an arc segment and a strip segment connected to the arc segment, which can increase the distance between the rear end of the pulling link 541 and the surface of the positioning plate 542, and avoid the positioning plate 542 from being obstructed.

[0052] The center of the arc segment faces the base 100. The arc segment is rotatably connected to the movable end of the extension connecting frame 530 around the vertical axis, so that the pulling rod 541 can move closer to or away from the pulley guide rail 110 around the vertical axis. The connecting end of the strip segment is movably connected to the locking plate 542, so that the locking plate 542 can rotate relative to the strip segment and move along the length of the strip segment. The locking end of the locking plate 542 extends through the shrinkage hole 111 to the guide groove and is close to the side wall of the base 100. One end of the return spring 543 is connected to the connecting end of the locking plate 542, and the other end of the return spring 543 is connected to the side wall of the pulley guide rail 110.

[0053] Preferably, the cross-section of the positioning plate 542 is a right-angled trapezoid, the inclined surface of the positioning plate 542 faces away from the traction baffle 120, and the length of the connecting end of the positioning plate 542 is greater than the length of the locking end of the positioning plate 542.

[0054] Work process: In the initial state, the pulley frame 410 is in the snap-fit ​​position, and the snap-fit ​​end of the snap-fit ​​plate 542 extends between the two pulley frames 410 to limit both sides of the pulley frame 410.

[0055] When preparing for testing, the feed screw 320 drives the feed mounting seat 440 to move and contact the elastic follower 510, so that the feed mounting seat 440 is directly opposite the pressure holder 430. Then, the pressure drive 420 drives the pressure holder 430 to move down and engage with the feed mounting seat 440.

[0056] Subsequently, the feed screw 320 drives the feed mounting seat 440 to approach the traction baffle 120. When the feed mounting seat 440 pushes the elastic follower 510 to approach the traction baffle 120, the stabilizing pulley frame 520 drives the extension connecting frame 530 away from the traction baffle 120. When the extension connecting frame 530 moves, it drives the pulling rod 541 to deflect away from the pulley guide rail 110, so that the locking end of the locking plate 542 moves into the contraction hole 111, releasing the limit on the pulley frame 410. At this time, the feed screw 320 reverses and drives the feed mounting seat 440 to pass through the locking position and start the detection.

[0057] At this time, under the action of the compression spring, the elastic follower 510 moves away from the traction baffle 120, and the snap-fit ​​end of the snap-fit ​​plate 542 slowly extends to the guide groove.

[0058] After the test is completed, the feed mounting base 440 and the pulley bracket 410 move synchronously towards the locking position. When the pulley bracket 410 contacts the inclined surface of the locking plate 542, the feed mounting base 440 continues to move, causing the pulley bracket 410 to push the locking plate 542 along the inclined surface, so that the locking end of the locking plate 542 moves into the contraction hole 111. The return spring 543 is compressed, and the pulley bracket 410 blocks the contraction hole 111 until the pulley bracket 410 moves to the locking position and disengages from the contraction hole 111. Under the action of the return spring 543, the locking plate 542 extends back between the two pulley brackets 410, thereby limiting the pulley bracket 410.

[0059] Subsequently, the downward drive 420 drives the downward clamp 430 to move upward and disengage from the feed mounting base 440, thus ending the process.

[0060] Example 4 Based on any one of Embodiments 1 to 3, this embodiment provides a method for dynamic torque detection of a machine tool feed system, including the following steps: The feed mechanism 300 drives the feed mounting base 440 to move directly below the pressure drive 420; The downward drive 420 moves the downward pressure holder 430 downward to apply downward pressure to the feed mounting base 440; The traction mechanism 600 applies traction force to the downward drive 420 according to the detection requirements; The feed mechanism 300 drives the feed mounting base 440, which in turn drives the pressure drive 420 to move on the base 100. Data is acquired and torque is determined using a dynamic torque sensor 200.

[0061] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the 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 illustrative and non-limiting in all respects, 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 scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0062] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dynamic torque detection device for a machine tool feed system, characterized in that, It includes a base (100), a dynamic torque sensor (200), a feed mechanism (300), a pressure application mechanism (400), and a traction mechanism (600); the pressure application mechanism (400) includes a pulley frame (410), a downward drive (420), a downward clamping seat (430), and a feed mounting seat (440); The dynamic torque sensor (200) cooperates with the feed mechanism (300). The feed mounting base (440) is slidably connected to the base (100) through the feed mechanism (300). The traction mechanism (600) is movably connected to the fixed end of the pressure drive (420). The fixed end of the pressure drive (420) is movably cooperated with the base (100) through the pulley frame (410). The pulley frame (410) is sleeved on the outside of the feed mounting base (440). The pressure holder (430) is located directly above the feed mounting base (440) and is connected to the output end of the pressure drive (420).

2. The dynamic torque detection device for a machine tool feed system according to claim 1, characterized in that, The feeding mechanism (300) includes a feeding motor (310), a feeding screw (320), and a mounting guide rail (330). The fixed end of the feed motor (310) is connected to the drive end of the base (100). The output end of the feed motor (310) is connected to one end of the feed screw (320) through the dynamic torque sensor (200). The outer wall of the dynamic torque sensor (200) is connected to the base (100). The other end of the feed screw (320) is rotatably connected to the traction end of the base (100). The mounting guide rail (330) is set on the base (100) along the length direction of the feed screw (320). The feed mounting seat (440) is sleeved on the outside of the feed screw (320) and threadedly connected to the feed screw (320). The bottom of the feed mounting seat (440) cooperates with the mounting guide rail (330).

3. The dynamic torque detection device for a machine tool feed system according to claim 1, characterized in that, The downward drive (420) includes a drive body (421) and a drive frame (422). The drive frame (422) is sleeved on the outside of the drive body (421) and connected to the fixed end of the drive body (421). The drive body (421) is vertically arranged. The output end of the drive body (421) is connected to the top of the downward card holder (430). The pulley frame (410) is connected to the top of the drive frame (422).

4. The dynamic torque detection device for a machine tool feed system according to claim 3, characterized in that, The lower surface of the pressure holder (430) is provided with multiple card strips, which are arranged perpendicular to the moving direction of the feed mounting base (440). The multiple card strips are arranged at equal intervals along the moving direction of the feed mounting base (440). The upper surface of the feed mounting base (440) is provided with multiple card slots, which match the card strips. The multiple card slots are arranged at equal intervals along the moving direction of the feed mounting base (440).

5. The dynamic torque detection device for a machine tool feed system according to claim 1, characterized in that, The dynamic torque detection device for the machine tool feed system also includes a locking mechanism (500). The locking mechanism (500) is located at the locking position of the base (100). The locking mechanism (500) is movably connected to the traction end of the base (100). The locking mechanism (500) cooperates with the pulley frame (410) to limit or release the pulley frame (410) located at the locking position.

6. The dynamic torque detection device for a machine tool feed system according to claim 5, characterized in that, The locking mechanism (500) includes an elastic follower (510), a stabilizing pulley frame (520), an extension connecting frame (530), and a locking unit (540). The stabilizing pulley frame (520) has an L-shaped structure. The horizontal section of the stabilizing pulley frame (520) is slidably connected to the base (100). The vertical section of the stabilizing pulley frame (520) is located outside the traction end of the base (100). The contact end of the elastic follower (510) is directly opposite to the side wall of the feed mounting seat (440). The connecting end of the elastic follower (510) extends through the traction end of the base (100) to connect with the vertical section of the stabilizing pulley frame (520). The feed mounting seat (440) is used to push the stabilizing pulley frame (520) to move through the elastic follower (510). The fixed end of the extension connecting frame (530) is connected to the vertical section of the stabilizing pulley frame (520). The movable end of the extension connecting frame (530) is arranged on the side of the pulley frame (410) along the length direction of the base (100). The movable end of the locking unit (540) is movably connected to the movable end of the extension connecting frame (530). The stabilizing pulley frame (520) moves back and forth, causing the locking unit (540) to move closer to or away from the locking position of the pulley frame (410).

7. The dynamic torque detection device for a machine tool feed system according to claim 6, characterized in that, The base (100) is provided with a pulley guide rail (110) on its side wall, and the pulley frame (410) is located between the pulley guide rail (110) and the base (100) and cooperates with the pulley guide rail (110); The locking unit (540) includes a pull rod (541), a locking plate (542), and a return spring (543); the pulley guide rail (110) is provided with a shrinkage hole (111), and the shrinkage hole (111) is located at the locking position; The extension connecting frame (530) is located outside the pulley guide rail (110). The pulling link (541) includes an arc segment and a strip segment connected to the arc segment. The arc segment is rotatably connected to the movable end of the extension connecting frame (530) around the vertical axis. The strip segment is movably connected to the connecting end of the locking plate (542). The locking end of the locking plate (542) passes through the shrinkage hole (111) and is close to the side wall of the base (100). One end of the return spring (543) is connected to the connecting end of the locking plate (542), and the other end of the return spring (543) is connected to the side wall of the pulley guide rail (110).

8. The dynamic torque detection device for a machine tool feed system according to claim 1, characterized in that, The traction mechanism (600) includes a traction rope (610), a rope guide carriage (620), a main wheel frame (630), a main pulley (631), a secondary pulley (632), a straightening unit, and a traction device; The main wheel frame (630) and the guide rope slide (620) are both connected to the traction end of the base (100). The guide rope slide (620) is inclined. The straightening unit is movably connected to the guide rope slide (620). The main pulley (631) and the auxiliary pulley (632) are rotatably connected to the main wheel frame (630). The traction device is located outside the guide rope slide (620). One end of the traction rope (610) is connected to the output end of the traction device. The other end of the traction rope (610) passes through the main pulley (631), the straightening unit and the auxiliary pulley (632) in sequence and is movably connected to the fixed end of the downward drive (420).

9. The dynamic torque detection device for a machine tool feed system according to claim 8, characterized in that, The straightening unit includes a rope pulley (640), a spring connector (641), and a rope spring (642); the rope slide (620) is provided with a rope groove (621), the rope slide (620) is located between the rope pulley (640) and the spring connector (641), and the traction rope (610) is engaged with the lower side of the rope pulley (640); The guide rope groove (621) is opened along the length direction of the guide rope slide (620). The guide rope wheel (640) is movably connected to the guide rope groove (621). The spring connector (641) is rotatably connected to the guide rope wheel (640) along the axial direction of the guide rope wheel (640). The guide rope spring (642) is connected between the spring connector (641) and the bottom of the guide rope slide (620).

10. A method for dynamic torque detection in a machine tool feed system, characterized in that, The dynamic torque detection device for a machine tool feed system according to any one of claims 1 to 9 includes the following steps: The feed mechanism (300) moves the feed mounting base (440) directly below the pressure drive (420); The downward drive (420) moves the downward pressure holder (430) downward to apply downward pressure to the feed mounting base (440); The traction mechanism (600) applies traction force to the downward drive (420) according to the detection requirements; The feed mechanism (300) drives the feed mounting base (440), which in turn drives the pressure drive (420) to move on the base (100); Data is acquired and torque is determined using a dynamic torque sensor (200).

Images