Axial displacement driving mechanism for driving oilstone to rotate based on magnetic suspension

Abstract

The utility model discloses an oilstone axial displacement driving mechanism based on magnetic suspension driving oilstone to rotate, which comprises an oilstone mechanism, a frame, stators, rotors, a traction rope and a conductive slip ring, the stators can horizontally move on the frame, the oilstone mechanism is penetratingly arranged on the inner side of the stators, the two rotors are fixed at two ends of the oilstone mechanism, and the traction rope is fixed on the frame. Power lines of the two rotors are correspondingly connected to the two conductive slip rings, the rotors are powered on and drive the oilstone mechanism to rotate in the stator, the stator pulls the two conductive slip rings through the two pulling ropes, and the stator horizontally moves and is pulled until the rotors and the oilstone mechanism synchronously and horizontally move. Axial movement of the oilstone is achieved in a traction mode of the traction rope, the use effect is good, the blank in the prior art is filled up, and the phenomenon that the spindle swings downwards and shifts due to the fact that the spindle is too long is avoided by combining the oilstone mechanism with the magnetic suspension function.

Description

Technical Field

[0001] The utility model relates to an oilstone axial displacement driving mechanism which drives the oilstone to rotate based on magnetic suspension. Background Art

[0002] Due to the high aspect ratio of the inner hole of the component, the spindle of the honing machine is required to be thin and long during processing. Therefore, the spindle will swing slightly due to insufficient rigidity during processing of the slender hole, resulting in the straightness failing to meet the processing requirements. In order to overcome this phenomenon, the applicant has made structural innovations based on the principle of magnetic levitation. Since the use of magnetic levitation eliminates the feed spindle, that is, the rotation of the oilstone mechanism is achieved through magnetic levitation, and the axial feed must be ensured during grinding (that is, the oilstone mechanism must be axially displaced). For this reason, the present invention provides a traction mechanism for achieving the axial displacement of the oilstone driven by magnetic levitation. Summary of the invention

[0003] The utility model provides an oilstone axial displacement driving mechanism based on magnetic suspension to drive the oilstone to rotate in order to solve the problems existing in the prior art.

[0004] The technical solutions adopted in this utility model are:

[0005] The invention discloses an oilstone axial displacement driving mechanism for driving the oilstone to rotate based on magnetic suspension, comprising an oilstone mechanism, a frame, a stator, a rotor, a traction rope and a conductive slip ring. The stator can move horizontally on the frame. The oilstone mechanism is arranged inside the stator. Two rotors are fixed at two ends of the oilstone mechanism. Power lines of the two rotors are connected to two conductive slip rings respectively. The rotor is energized and drives the oilstone mechanism to rotate inside the stator. The stator pulls the two conductive slip rings through two traction ropes. The stator moves horizontally and pulls the rotor to move horizontally synchronously with the oilstone mechanism.

[0006] Furthermore, the stator includes a permanent magnet and a stator shell, the permanent magnet is fixed on both sides of the inner cavity of the stator shell, a linear actuator structure is provided on the frame, the linear free end of the linear actuator structure is connected to the stator shell, and drives the stator to move horizontally.

[0007] Furthermore, the traction rope includes an outer skin and a rope core, the rope core can move inside the outer skin, the outer skin is fixed to the frame, one end of the two traction rope cores are respectively fixed to the two ends of the stator shell, and the other ends of the two rope cores are fixed to the two conductive slip rings accordingly.

[0008] Furthermore, the oilstone mechanism and the rotor are connected via a key and a keyway.

[0009] Furthermore, a plurality of rubber balls are evenly distributed on the outer wall surface of the moving end of the conductive slip ring, and the moving end of the conductive slip ring is connected to the rotor.

[0010] Furthermore, the frame is provided with two fixed seats arranged at intervals, the fixed seats are provided with support holes and studs arranged along the radial direction of the support holes, and the bottom ends of the studs extend into the support holes.

[0011] The utility model has the following beneficial effects:

[0012] The utility model realizes axial movement of the oil stone by traction of the traction rope, has good use effect, fills the gap in the prior art, and combines the oil stone mechanism with magnetic levitation effect, so that the main shaft will not be displaced due to the excessive length. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural diagram of the utility model.

[0014] Figure 2 This is a structural diagram of the utility model.

[0015] Figure 3 This is the assembly diagram between the traction rope, stator and conductive slip ring.

[0016] Figure 4 This is the assembly drawing between the oilstone mechanism and the rotor.

[0017] Figure 5 It is a schematic diagram of an oilstone mechanism in an embodiment of the utility model. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings.

[0019] like Figures 1 to 4 The utility model discloses an oilstone axial displacement driving mechanism for driving the oilstone to rotate based on magnetic suspension, comprising an oilstone mechanism, a frame 11, a stator 21, a rotor 31, a traction rope 41 and a conductive slip ring 32.

[0020] Two fixed seats 111 are arranged at intervals on the frame 11. The fixed seats 111 are provided with support holes. Both ends of the pipe workpiece 400 are supported in the support holes. A number of studs are threadedly connected on the fixed seats 111. The ends of the studs extend into the support holes and lock the pipe workpiece 400, thereby finally fixing the pipe workpiece 400 in suspension on the frame 11.

[0021] The pipe workpiece 400 is inserted into the inner side of the stator 21, and the stator 21 can be displaced along the axial direction of the pipe workpiece on the frame 11. The oilstone mechanism is inserted into the pipe workpiece 400 and is coaxial with the pipe workpiece 400. Two rotors 31 are fixed at both ends of the oilstone mechanism. The power lines of the two rotors 31 are connected to two conductive slip rings 32 respectively. The rotors 31 are energized and drive the oilstone mechanism to rotate inside the pipe workpiece 400. The stator 21 pulls the two conductive slip rings 32 through two traction ropes 41. The stator 21 moves horizontally and pulls the rotor 31 to move horizontally synchronously with the oilstone mechanism.

[0022] The stator 21 includes a permanent magnet 211 and a stator housing 212. The permanent magnet 211 is a semicircular structure. Two permanent magnets 211 form a group and are fixed on both sides of the inner cavity of the stator housing 212. The stator housing 212 is driven by a linear actuator and realizes linear displacement on the frame 11 (i.e., movement along the axial direction of the pipe workpiece 400).

[0023] The linear actuator of the embodiment of the utility model adopts a screw mechanism, and mounting plates 213 are fixed on both sides of the stator housing 212, and the mounting plates 213 are installed on the free end of the screw mechanism.

[0024] The two traction ropes 41 are arranged in an S shape. The traction ropes 41 include an outer skin 411 and a rope core 412. The rope core 412 can move inside the outer skin 411. The outer skin is passed through the mounting plates 213 at both ends of the stator housing 212, and the outer skin 411 is fixed to the frame 11. One ends of the two traction rope cores are respectively fixed to the mounting plates 213 on both sides of the stator 21, and the other ends of the two rope cores 412 are fixed to the static ends of the two conductive slip rings 32.

[0025] When the lead screw mechanism drives the stator 21 to move left and right, the stator 21 pulls the conductive slip ring 32 on the corresponding side through the traction rope 41. Since the moving end of the conductive slip ring 32 is assembled with the rotor 31, the rotor 31 and the stator 21 can move synchronously. The rotor 31 is powered to realize the synchronous rotation of the oilstone retainer 51.

[0026] The rotor 31 is energized and drives the oilstone mechanism to rotate together. The schematic diagram of an oilstone mechanism in the embodiment of the utility model is as follows: Figure 5, including an oilstone holder 51, the oilstone holder 51 and the rotor 31 are connected by a key and a keyway. A plurality of slots 510 are evenly distributed in the circumferential direction of the oilstone holder 51, an oilstone seat 521 is inserted in the slot 510, and an oilstone 52 is fixed on the top of each oilstone seat 521. Two annular springs 513 are arranged in the oilstone holder 51, and the two annular springs 513 are sleeved on all the oilstone seats 521, and the oilstone seats 521 are elastically pressed against the expansion shaft 61, and the piezoelectric ceramic 62 is fixed in the oilstone holder 51. When the piezoelectric ceramic 62 is energized, it deforms in the axial direction and causes the expansion shaft 61 to axially displace, and the inclined surface of the expansion shaft 61 slides relative to the inclined surface of the oilstone seat 521, causing the oilstone seat 521 to radially displace.

[0027] The oilstone mechanism is not the focus of the present invention, so the structure of the oilstone mechanism will not be described in more detail. This application only introduces the general principle of the oilstone mechanism.

[0028] The rotor 31 and the piezoelectric ceramic 62 both have leads. To avoid winding during rotation, the utility model connects the leads of the rotor 31 and the piezoelectric ceramic 62 to the conductive slip ring 32. The conductive slip ring 32 has a static end and a dynamic end. The utility model does not elaborate on its structure and principle. Since the traction rope 41 is to pull the conductive slip ring 32 to axially displace, a number of rubber balls 321 are evenly distributed on the outer wall surface of the dynamic end of the conductive slip ring 32. When the oilstone 52 is not in contact with the inner wall of the pipe workpiece 400, when the rotor 31 is axially displaced, the rubber balls 321 are used to guide the movement. When the oilstone 52 extends out and contacts the inner wall of the pipe workpiece 400, the axial displacement of the rotor 31 is guided by the oilstone 52.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be regarded as within the protection scope of the present invention.

Claims

1. An oilstone axial displacement driving mechanism based on magnetic suspension to drive the oilstone to rotate, comprising an oilstone mechanism, characterized in that: The invention also comprises a frame (11), a stator (21), a rotor (31), a traction rope (41) and a conductive slip ring (32). The stator (21) can move horizontally on the frame (11). An oilstone mechanism is arranged inside the stator (21). Two rotors (31) are fixed at two ends of the oilstone mechanism. Power lines of the two rotors (31) are connected to two conductive slip rings (32) respectively. The rotor (31) is energized and drives the oilstone mechanism to rotate inside the stator (21). The stator (21) pulls the two conductive slip rings (32) through two traction ropes (41). The stator (21) moves horizontally and pulls the rotor (31) to move horizontally synchronously with the oilstone mechanism.

2. The oilstone axial displacement driving mechanism based on magnetic suspension driving oilstone rotation according to claim 1, characterized in that: The stator (21) comprises a permanent magnet (211) and a stator housing (212), wherein the permanent magnet (211) is fixed to two sides of an inner cavity of the stator housing (212), and a linear actuator structure is provided on the frame (11), wherein a linear free end of the linear actuator structure is connected to the stator housing (212) and drives the stator (21) to move horizontally.

3. The oilstone axial displacement driving mechanism based on magnetic suspension driving oilstone rotation according to claim 2, characterized in that: The traction rope (41) comprises an outer skin and a rope core, the rope core is movable within the outer skin, the outer skin is fixed to the frame (11), one end of the rope cores of the two traction ropes are respectively fixed to the two ends of the stator housing (212), and the other ends of the two rope cores are fixed to the two conductive slip rings accordingly.

4. The oilstone axial displacement driving mechanism based on magnetic suspension driving oilstone rotation according to claim 1, characterized in that: The oilstone mechanism and the rotor (31) are connected via a key and a keyway.

5. The oilstone axial displacement driving mechanism based on magnetic suspension driving oilstone rotation according to claim 1, characterized in that: A plurality of rubber balls (321) are evenly distributed on the outer wall surface of the moving end of the conductive slip ring (32), and the moving end of the conductive slip ring (32) is connected to the rotor (31).

6. The oilstone axial displacement driving mechanism based on magnetic suspension driving oilstone rotation according to claim 1, characterized in that: The frame (11) is provided with two fixed seats (111) arranged at intervals, and the fixed seats (111) are provided with support holes and studs arranged in the radial direction of the support holes, and the bottom ends of the studs extend into the support holes.

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