Cutting force monitoring device installed on main shaft

Abstract

The utility model relates to a cutting force monitoring device installed on a main shaft, which belongs to the technical field of main shaft cutting force monitoring devices, and comprises a shaft body seat, the main shaft and a shaft body ring, a vibration reduction mechanism is arranged on the outer wall of the shaft body seat, and the vibration reduction mechanism comprises an installation seat movably installed on the outer wall of the bottom of the shaft body ring. And a screw is movably installed in the shaft body ring, a mounting plate is fixedly installed on the outer wall of the bottom of the mounting base, the outer wall of the mounting plate is sleeved with a rubber sleeve, and a movable plate is slidably connected into the mounting plate. According to the cutting force monitoring device mounted on the main shaft, transmission of vibration force on the mounting plate is reduced under the action of a rubber sleeve, the influence of vibration on monitoring equipment is reduced under the action of a damping spring, a friction plate, an arc-shaped plate and a rubber plate, and friction limiting is performed on the movable plate under the action of a threaded rod and a rubber limiting block; the distance between the monitoring equipment and the main shaft can be conveniently adjusted, and the accuracy of monitoring the cutting force of the main shaft is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spindle cutting force monitoring devices, in particular to a cutting force monitoring device installed on a spindle. Background Art

[0002] Spindle-mounted cutting force monitoring devices are a key tool for detecting cutting forces in precision machine tools. They use sensors to measure the forces generated during the cutting process and convert these forces into usable data. At the heart of these devices is a self-decoupling force / torque sensor capable of detecting both axial and torque cutting forces. The sensor achieves self-decoupling via two decoupling nodes: the first, consisting of three guide bearings, eliminates translational effects; the second, a graphite gasket, eliminates torsional effects. The sensor incorporates two magnetostrictive materials as sensing elements in the force-sensitive and torque-sensitive regions, respectively, to detect axial force and torque. This sensor, based on the Villari effect, achieves passive and wireless characteristics and has been demonstrated through the fabrication and testing of full-scale prototypes, demonstrating its applicability in actual machine tool cutting processes.

[0003] At present, in order to effectively detect the spindle cutting force, the monitoring device is generally installed on the shaft seat. However, when the shaft seat drives the spindle to rotate, a certain vibration will be generated. Therefore, the monitoring device is affected by the vibration force when monitoring the spindle cutting force, which will interfere with the output of the sensor and affect the accuracy of the measurement results. Therefore, a cutting force monitoring device installed on the spindle is proposed. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a cutting force monitoring device installed on the spindle, which has the advantages of improving the accuracy of monitoring equipment monitoring, and solves the problem that the monitoring device is affected by vibration force when monitoring the spindle cutting force, which interferes with the output of the sensor and affects the accuracy of the measurement results.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cutting force monitoring device installed on a spindle, comprising a shaft seat, a spindle and a shaft ring, wherein a vibration reduction mechanism is provided on the outer wall of the shaft seat;

[0006] The cam is fixedly mounted on the outside of the bottom of the shaft ring, and a screw is movably mounted inside the shaft ring, and a mounting plate is fixedly mounted on the outside of the bottom of the mounting seat, and a rubber sleeve is sleeved on the outer wall of the mounting plate, and a movable plate is slidably connected to the inside of the mounting plate, and a fixing plate is fixedly mounted on the right outer wall of the movable plate, and a monitoring device is fixedly mounted on the right outer wall of the fixing plate, and two connecting plates are fixedly mounted on the right outer wall of the mounting plate, and two vibration-damping springs are fixedly mounted on the outer walls of opposite sides of the two connecting plates, and an arc plate is fixedly mounted on the side of the vibration-damping spring away from the connecting plate, and a rubber plate is mounted on the side of the arc plate close to the monitoring device, and two adjusting plates are fixedly mounted on the left outer wall of the mounting plate, and the internal thread of the adjusting plate is connected to a threaded rod, and a rubber limit block is fixedly mounted on the side of the threaded rod close to the movable plate.

[0007] Furthermore, a mounting hole is provided inside the shaft ring, a threaded groove is provided on the top of the mounting seat, and the screw passes through the internal thread of the mounting hole and is connected to the inside of the threaded groove and has a matching size.

[0008] Furthermore, an adjustment hole is opened inside the mounting plate, and the movable plate is slidably connected to the inside of the adjustment hole and is adapted in size.

[0009] Furthermore, four friction plates are fixedly mounted on the outer walls of the two connecting plates on opposite sides, and the damping spring is slidably connected between the two friction plates.

[0010] Furthermore, the rubber plate is arc-shaped and is attached to the outer wall of the monitoring device.

[0011] Furthermore, a threaded hole is provided inside the adjustment plate, the threaded rod is threadedly connected to the inside of the threaded hole and is adapted in size, friction limit grooves are provided on the top and bottom of the movable plate, the rubber limit block is circular, and the rubber limit block is movably installed inside the friction limit groove and is adapted in size.

[0012] Furthermore, the main shaft is installed inside the shaft seat and extends downward, and the shaft ring is installed on the outer peripheral wall of the shaft seat.

[0013] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0014] The cutting force monitoring device installed on the main spindle reduces the transmission of vibration force to the mounting plate through the action of the rubber sleeve, reduces the influence of vibration on the monitoring equipment through the action of the vibration-damping spring, friction plate, arc plate and rubber plate, and frictionally limits the movable plate through the action of the threaded rod and rubber limit block, thereby facilitating the adjustment of the distance between the monitoring equipment and the main spindle and improving the accuracy of the main spindle cutting force monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the utility model;

[0016] Figure 2 For this utility model Figure 1 A is an enlarged structural diagram;

[0017] Figure 3 This is a schematic diagram of the top view of the movable plate of the utility model;

[0018] Figure 4 This is a schematic diagram of the connection structure of the arc plate and the rubber plate of the utility model.

[0019] In the figure: 1. Shaft seat; 2. Main shaft; 3. Shaft ring; 4. Mounting seat; 5. Screw; 6. Mounting plate; 7. Rubber sleeve; 8. Movable plate; 9. Fixed plate; 10. Monitoring equipment; 11. Connecting plate; 12. Shock-absorbing spring; 13. Friction plate; 14. Arc plate; 15. Rubber plate; 16. Adjustment plate; 17. Threaded rod; 18. Rubber limit block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figures 1 to 4 In this embodiment, a cutting force monitoring device installed on a spindle includes a shaft seat 1, a spindle 2 and a shaft ring 3. The outer wall of the shaft seat 1 is provided with a vibration reduction mechanism.

[0022] The main shaft 2 is installed inside the shaft seat 1 and extends downward, and the shaft ring 3 is installed on the outer peripheral wall of the shaft seat 1.

[0023] The vibration reduction mechanism includes a mounting seat 4 movably mounted on the outer wall of the bottom of the shaft ring 3, a screw 5 is movably mounted inside the shaft ring 3, a mounting hole is opened inside the shaft ring 3, a threaded groove is opened on the top of the mounting seat 4, the screw 5 passes through the inner thread of the mounting hole and is connected to the inside of the threaded groove and is adapted in size, a mounting plate 6 is fixedly mounted on the outer wall of the bottom of the mounting seat 4, a rubber sleeve 7 is sleeved on the outer wall of the mounting plate 6, a movable plate 8 is slidably connected to the inside of the mounting plate 6, an adjustment hole is opened inside the mounting plate 6, and the movable plate 8 is slidably connected to the inside of the adjustment hole and is adapted in size.

[0024] A fixed plate 9 is fixedly installed on the right outer wall of the movable plate 8, a monitoring device 10 is fixedly installed on the right outer wall of the fixed plate 9, two connecting plates 11 are fixedly installed on the right outer wall of the mounting plate 6, two damping springs 12 are fixedly installed on the outer walls on opposite sides of the two connecting plates 11, four friction plates 13 are fixedly installed on the outer walls on opposite sides of the two connecting plates 11, the damping springs 12 are slidably connected between the two friction plates 13, an arc-shaped plate 14 is fixedly installed on the side of the damping spring 12 away from the connecting plate 11, a rubber plate 15 is installed on the side of the arc-shaped plate 14 close to the monitoring device 10, the rubber plate 15 is arc-shaped, and the rubber plate 15 fits the outer peripheral wall of the monitoring device 10.

[0025] Two adjustment plates 16 are fixedly installed on the left outer wall of the mounting plate 6. The internal threads of the adjustment plates 16 are connected to threaded rods 17. A rubber limit block 18 is fixedly installed on the side of the threaded rods 17 close to the movable plate 8. A threaded hole is provided inside the adjustment plate 16. The threaded rods 17 are threadedly connected to the inside of the threaded hole and are adapted in size. Friction limit grooves are provided on the top and bottom of the movable plate 8. The rubber limit block 18 is circular and movably installed inside the friction limit groove and is adapted in size.

[0026] In this embodiment, the mounting base 4 and the screws 5 facilitate the installation and removal of the mounting plate 6 .

[0027] In this embodiment, the threaded rod 17 and the rubber limit block 18 generate frictional force that prevents the movable plate 8 from adjusting and moving, thereby fixing the monitoring device 10 so that it cannot move.

[0028] In this embodiment, the damping spring 12 and the friction plate 13 absorb the conducted vibration, thereby reducing the impact of the vibration on the monitoring device 10 .

[0029] The working principle of the above embodiment is:

[0030] When it is necessary to adjust the distance between the monitoring device 10 and the main shaft 2, the movable plate 8 is pulled left and right to drive the monitoring device 10 to adjust its position. After the position adjustment of the monitoring device 10 is completed, the threaded rod 17 is rotated to drive the rubber limit block 18 to move toward the movable plate 8. When the two rubber limit blocks 18 are respectively attached to the top and bottom of the movable plate 8, the fixing of the monitoring device 10 is completed. When the main shaft 2 rotates, vibration will be generated. The vibration transmitted to the mounting plate 6 is weakened by the action of the rubber sleeve 7. At this time, the vibration-damping spring 12 will drive the arc plate 14 and the rubber plate 15 to expand and contract back and forth slightly after being vibrated. At this time, the vibration-damping spring 12 will rub against the friction plate 13 to further weaken the vibration, thereby improving the accuracy of the monitoring device 10 in monitoring the cutting force of the main shaft 2.

[0031] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cutting force monitoring device mounted on a spindle, comprising a shaft seat (1), a spindle (2) and a shaft ring (3), characterized in that: The outer wall of the shaft seat (1) is provided with a vibration reduction mechanism; The vibration reduction mechanism comprises a mounting seat (4) movably mounted on the outer wall of the bottom of the shaft ring (3); a screw (5) is movably mounted inside the shaft ring (3); a mounting plate (6) is fixedly mounted on the outer wall of the bottom of the mounting seat (4); a rubber sleeve (7) is sleeved on the outer wall of the mounting plate (6); a movable plate (8) is slidably connected inside the mounting plate (6); a fixed plate (9) is fixedly mounted on the right outer wall of the movable plate (8); a monitoring device (10) is fixedly mounted on the right outer wall of the fixed plate (9); and two connecting plates are fixedly mounted on the right outer wall of the mounting plate (6). (11), two damping springs (12) are fixedly mounted on the outer walls of the two connecting plates (11) on opposite sides, an arc-shaped plate (14) is fixedly mounted on the side of the damping spring (12) away from the connecting plate (11), a rubber plate (15) is mounted on the side of the arc-shaped plate (14) close to the monitoring device (10), two adjusting plates (16) are fixedly mounted on the left outer wall of the mounting plate (6), a threaded rod (17) is connected to the inner thread of the adjusting plate (16), and a rubber limit block (18) is fixedly mounted on the side of the threaded rod (17) close to the movable plate (8).

2. The cutting force monitoring device mounted on a spindle according to claim 1, characterized in that: A mounting hole is provided inside the shaft ring (3), a threaded groove is provided on the top of the mounting seat (4), and the screw (5) passes through the internal thread of the mounting hole and is connected to the inside of the threaded groove and has a size that matches the screw.

3. The cutting force monitoring device installed on a spindle according to claim 1, characterized in that: An adjustment hole is provided inside the mounting plate (6), and the movable plate (8) is slidably connected to the inside of the adjustment hole and has a size that matches the adjustment hole.

4. The cutting force monitoring device installed on a spindle according to claim 1, characterized in that: Four friction plates (13) are fixedly mounted on the outer walls of the two connecting plates (11) on one side opposite to each other, and the damping spring (12) is slidably connected between the two friction plates (13).

5. The cutting force monitoring device installed on a spindle according to claim 1, characterized in that: The rubber plate (15) is arc-shaped, and the rubber plate (15) is attached to the outer peripheral wall of the monitoring device (10).

6. The cutting force monitoring device installed on a spindle according to claim 1, characterized in that: A threaded hole is provided inside the adjusting plate (16), the threaded rod (17) is threadedly connected to the inside of the threaded hole and is adapted in size, the top and bottom of the movable plate (8) are provided with friction limit grooves, the rubber limit block (18) is circular, and the rubber limit block (18) is movably installed inside the friction limit groove and is adapted in size.

7. The cutting force monitoring device installed on a spindle according to claim 1, characterized in that: The main shaft (2) is installed inside the shaft seat (1) and extends downward, and the shaft ring (3) is installed on the outer peripheral wall of the shaft seat (1).

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