High-precision intelligent grinding and polishing head

Abstract

The utility model provides high accuracy intelligence grinding and polishing machine head, including fixed frame, machine head seat and grinding and polishing disc, one end of fixed frame is provided with lifting assembly, the inside of fixed frame is provided with the sliding frame of sliding, lifting assembly is used for driving the sliding of sliding frame, fixedly connected with hollow permanent magnet synchronous motor in the sliding frame, machine head seat fixed connection is away from one end of lifting assembly of fixed frame, the sliding sleeve is slidably arranged in the machine head seat, the sliding sleeve fixed connection is away from one end of lifting assembly of sliding frame, the rotation is connected with the main shaft in the sliding sleeve, one end of main shaft is fixedly connected with the rotor of hollow permanent magnet synchronous motor in the same shaft, grinding and polishing disc fixed connection is in the other end of main shaft, has the effect that improves grinding and polishing machine head machining accuracy.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of grinding and polishing, and particularly relates to a high-precision intelligent grinding and polishing head. BACKGROUND

[0002] The transparency of crystal products depends on the precision of grinding and polishing process, and as the market demands higher and higher quality of crystal products, the precision of grinding and polishing process is also required to be higher and higher. The grinding and polishing process generally includes rough grinding, fine grinding and polishing procedures. In the grinding and polishing process, the grinding and polishing head distributed in different stations is used to perform different processing procedures on the product. In the related art, the grinding and polishing head uses an ordinary motor to transmit rotary power to the grinding and polishing head through a belt and main shaft linkage to drive the main shaft to rotate and grind the workpiece.

[0003] For the related art described above, when the grinding and polishing head adjusts the angle, the belt will be pulled, the belt will be loosened, the transmission efficiency will be reduced, the rotation speed of the main shaft will be reduced, and thus the grinding and polishing precision will be affected. At the same time, the belt will generate a transverse pulling force on the main shaft during the machining process, causing the main shaft to deviate from the center axis, the plane of the grinding disc or polishing disc is not parallel to the plane of the workpiece, and thus machining errors are generated. Therefore, there is a problem of insufficient grinding and polishing precision of the grinding and polishing head.

[0004] Therefore, it is necessary to provide a high-precision intelligent grinding and polishing head to solve the above problems. SUMMARY

[0005] The utility model discloses a high-precision intelligent grinding and polishing head to solve the problem of insufficient grinding and polishing precision of the grinding and polishing head.

[0006] To achieve the above object, the utility model discloses a high-precision intelligent grinding and polishing head adopts the following technical scheme:

[0007] The high-precision intelligent grinding and polishing head comprises a fixed frame, a head seat and a grinding and polishing disc, one end of the fixed frame is provided with a lifting assembly, a sliding frame is slidably arranged in the fixed frame, the lifting assembly is used to drive the sliding frame to slide, and a hollow permanent magnet synchronous motor is fixedly connected in the sliding frame. The head seat is fixedly connected to the end of the fixed frame away from the lifting assembly, a sliding sleeve is slidably arranged in the head seat, the sliding sleeve is fixedly connected to the end of the sliding frame away from the lifting assembly, a main shaft is rotatably connected in the sliding sleeve, one end of the main shaft is coaxially fixedly connected to the rotor of the hollow permanent magnet synchronous motor, and the grinding and polishing disc is fixedly connected to the other end of the main shaft.

[0008] As an optimization of the high-precision intelligent grinding and polishing head, the inner walls of the two ends of the fixed frame are provided with limiting pieces, the limiting pieces are made of optimax glue material, and the limiting pieces are used to abut against the sliding frame.

[0009] As the optimization of high-precision intelligent polishing head, the sliding frame comprises an upper plate and a lower plate, a distance adjusting cylinder is fixedly connected to the upper plate, and an auxiliary square frame is fixedly connected to the lower plate, and the telescopic rod of the distance adjusting cylinder is fixedly connected to the auxiliary square frame.

[0010] As the optimization of high-precision intelligent polishing head, a through-flow pipe is embedded in the center of the main shaft, one end of the through-flow pipe is used for injecting grinding fluid, the other end of the through-flow pipe is communicated with the polishing disc, and a plurality of through holes are arranged on the side of the polishing disc away from the main shaft.

[0011] As the optimization of high-precision intelligent polishing head, the polishing disc comprises a grinding disc and a mounting disc, a plurality of through holes are arranged on the grinding disc in a circumferential direction, an annular groove is arranged on the mounting disc, the annular groove is located on the circumference of the through holes, a flow guide groove is further arranged on the mounting disc in a radial direction, one end of the flow guide groove is communicated with the through-flow pipe, and the other end of the flow guide groove is communicated with the annular groove.

[0012] As the optimization of high-precision intelligent polishing head, a hollow cavity is arranged on the side wall of the hollow permanent magnet synchronous motor, and a liquid injection pipe is arranged on the circumferential side of the hollow permanent magnet synchronous motor, the liquid injection pipe is used for injecting cooling liquid into the hollow cavity.

[0013] As the optimization of high-precision intelligent polishing head, the lifting assembly comprises a servo motor, a lead screw and a pulley, the servo motor is arranged on the fixed frame, the lead screw is arranged in the fixed frame, the pulley is fixedly connected to one end of the lead screw, a synchronous belt is arranged between the output shaft of the servo motor and the pulley, a nut pair is embedded on the sliding frame, and the nut pair is threadedly connected to the circumferential side of the lead screw.

[0014] Compared with the prior art, the utility model has the advantages of:

[0015] (1) eliminating the transverse tension on the main shaft, making the main shaft rotate around the center axis, thereby making the polishing plane more uniform and improving the machining precision of the polishing head; (2) reducing the steps of adjusting the tightness of the belt and cleaning the dropped slag of the belt, which is beneficial to improving the efficiency of the machine adjustment; (3) the hollow permanent magnet synchronous motor reduces the power loss of the mechanical structure transmission, improves the energy utilization rate, accelerates the polishing speed, and is beneficial to improving the machining precision. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor under the premise of the drawings.

[0017] Figure 1 It is a whole structure schematic diagram of the high-precision intelligent grinding and polishing head of the embodiment of the present application.

[0018] Figure 2 It is a cross-sectional structure schematic diagram of the high-precision intelligent grinding and polishing head of the embodiment of the present application.

[0019] Figure 3 It is an exploded structure schematic diagram of the grinding and polishing disc of the embodiment of the present application.

[0020] In the figure: 1, fixed frame; 11, top plate; 12, bottom plate; 13, guide rod; 2, head seat; 3, grinding and polishing disc; 31, through hole; 32, grinding disc; 33, mounting disc; 331, annular groove; 332, flow guide groove; 4, lifting assembly; 41, servo motor; 42, screw rod; 43, pulley; 44, nut pair; 5, sliding frame; 51, upper plate; 52, lower plate; 53, distance adjusting cylinder; 54, auxiliary square frame; 6, hollow permanent magnet synchronous motor; 61, stator; 62, rotor; 63, containing cavity; 64, liquid injection pipe; 7, sliding sleeve; 8, main shaft; 81, through-flow pipe; 9, limiting piece. DETAILED DESCRIPTION

[0021] In order to make the technical solutions and advantages of the present application more clear, the following will combine specific implementation manners and the drawings of the specification to make further detailed description on the present application and its beneficial effects, but the implementation manners of the present application are not limited to this.

[0022] In the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0023] The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, the machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, and details are not described herein.

[0024] The following will be described in detail with reference to the accompanying drawings. Figures 1-3 The application will be further described in detail.

[0025] The application provides a high-precision intelligent grinding and polishing head, and the following technical scheme is adopted:

[0026] Referring to Figure 1 and Figure 2 , the high-precision intelligent grinding and polishing head comprises a fixing frame 1, a head base 2 and a grinding and polishing disc 3. The fixing frame 1 comprises a top plate 11, a bottom plate 12 and guide rods 13, the guide rods 13 are supported and installed between the top plate 11 and the bottom plate 12, and the guide rods 13 comprise four, and the four guide rods 13 are respectively located at four corners of the top plate 11. A lifting assembly 4 is installed on the top plate 11 of the fixing frame 1, a sliding frame 5 is installed in the fixing frame 1, the sliding frame 5 moves up and down in the fixing frame 1 along the guide rods 13, a hollow permanent magnet synchronous motor 6 is fixedly installed inside the sliding frame 5, the hollow permanent magnet synchronous motor 6 is a high-efficiency motor, the core components thereof comprise a stator 61 and a rotor 62, the stator 61 is usually composed of a three-phase winding, when three-phase alternating current is input, a rotating magnetic field is generated in the internal space of the stator 61, the rotor 62 is a permanent magnet and has fixed magnetic poles, the rotating magnetic field generated by the stator 61 can attract the permanent magnet of the rotor 62, so that the rotor 62 rotates synchronously with the rotating magnetic field. The head base 2 is fixedly installed on the bottom plate 12 of the fixing frame 1, a sliding sleeve 7 is slidingly installed in the head base 2, one end of the sliding sleeve 7 is fixedly connected to the bottom end of the sliding frame 5, and a main shaft 8 is rotatably installed in the sliding sleeve 7 through a bearing. A spline shaft is integrally installed at one end of the main shaft 8, the rotor 62 of the hollow permanent magnet synchronous motor 6 is embeddedly installed with a spline sleeve, the end of the main shaft 8 is fixedly connected with the rotor 62 of the hollow permanent magnet synchronous motor 6 through the combination of the spline sleeve and the spline shaft, and the main shaft 8 rotates coaxially with the hollow permanent magnet synchronous motor 6. The grinding and polishing disc 3 is fixedly connected to the other end of the main shaft 8 and rotates synchronously with the main shaft 8.

[0027] When grinding and polishing processing is needed, the synchronous motor is used to drive the main shaft 8 to rotate, instead of driving the main shaft 8 to rotate through a belt, which not only can reduce the steps of adjusting the tightness of the belt and cleaning the belt debris and reduce the difficulty of adjusting the machine, but also can eliminate the transverse tension received by the main shaft 8, so that the main shaft 8 rotates on the central axis, the tool surface of the grinding disc or the polishing disc is parallel to the surface of the workpiece, the grinding and polishing processing is more uniform, and the grinding and polishing processing precision is improved.

[0028] In the preferred embodiments of the present application, referring to Figure 1 and Figure 2 , the inner walls of the two end portions of the fixing frame 1 are each provided with a limiting piece 9. Specifically, the limiting pieces 9 are provided on the top plate 11 and the bottom plate 12 of the fixing frame 1. The limiting pieces 9 are made of a material that is between plastic and rubber, which has the rigidity of plastic and the elasticity of rubber. When the sliding frame slides to the end portion of the fixing frame 1, the limiting pieces 9 abut against the edge of the sliding frame. The limiting pieces 9 can brake the sliding frame and absorb the kinetic energy of the sliding frame, thereby avoiding the collision between the sliding frame and the fixing frame 1 and the damage of the sliding frame, and improving the service life of the sliding frame.

[0029] In the preferred embodiments of the present application, referring to Figure 1 and Figure 2 , the sliding frame comprises an upper plate 51 and a lower plate 52. The four corners of the upper plate 51 and the lower plate 52 are each fixedly provided with a sliding seat, which is sleeved on the guide rod 13 to slide. The upper plate 51 is fixedly provided with a distance adjusting cylinder 53, and the lower plate 52 is fixedly provided with an auxiliary square frame 54. The extension rod of the distance adjusting cylinder 53 faces the auxiliary square frame 54, and the extension rod of the distance adjusting cylinder 53 is fixedly connected to one end of the auxiliary square frame 54 away from the lower plate 52. During the grinding and polishing process of the polishing disc 3, the polishing disc 3 is constantly thinned due to wear, so that the polishing disc 3 gradually moves away from the surface of the workpiece, and the processing quality gradually decreases. By elongating the distance adjusting cylinder 53, the distance between the upper plate 51 and the lower plate 52 can be adjusted, the length of the sliding frame is increased, the main shaft 8 is pushed downward, the wear thickness of the polishing disc 3 is compensated, the polishing disc 3 is always driven to abut against the surface of the workpiece, so as to ensure the processing quality of the continuous processing of the surface of the workpiece, and the processing precision of the grinding and polishing head is improved.

[0030] In the preferred embodiments of the present application, referring to Figure 2 , the center of the main shaft 8 is embeddedly provided with a through-flow pipe 81. One end of the through-flow pipe 81 is connected with an external water pipe through the hollow permanent magnet synchronous motor 6, and grinding fluid is introduced into the through-flow pipe 81. The other end of the through-flow pipe 81 is communicated with the polishing disc 3, and a plurality of through holes 31 are formed in the surface of the polishing disc 3 away from the main shaft 8. The grinding fluid is injected into the top end of the through-flow pipe 81, flows into the center of the polishing disc 3 from the bottom end of the through-flow pipe 81, and penetrates into the surface of the workpiece through the through holes 31 around the polishing disc 3. On the one hand, the grinding fluid cools the workpiece to keep the temperature of the grinding process stable. On the other hand, the grinding fluid can flush the powder on the surface of the workpiece to the edge under the centrifugal force, so as to keep the surface of the workpiece clean, improve the processing quality of the surface of the workpiece, and improve the processing precision of the grinding and polishing head.

[0031] Further, referring to Figure 2 and Figure 3The grinding and polishing disc 3 comprises a grinding disc 32 and a mounting disc 33. The mounting disc 33 is fixedly mounted on the main shaft 8, and the grinding disc 32 is detachably mounted on the mounting disc 33. The grinding disc 32 is selected according to actual machining requirements, and the through holes 31 are equidistantly arranged along the circumferential direction of the grinding disc 32. The mounting disc 33 is provided with an annular groove 331, which is located at the circumference of the through holes 31 on the grinding disc 32. The mounting disc 33 is provided with a flow guide groove 332 in the radial direction. One end of the flow guide groove 332 is communicated with the bottom end of the through flow pipe 81, and the other end of the flow guide groove 332 is communicated with the annular groove 331. In this embodiment, three flow guide grooves 332 are arranged. When the grinding fluid enters the grinding and polishing disc 3, under the centrifugal force of the grinding and polishing disc 3, the grinding fluid flows from the center of the grinding and polishing disc 3 to the annular groove 331 through the flow guide groove 332, and then is uniformly distributed to the through holes 31 on the grinding disc 32 through the annular groove 331, so that the distribution of the grinding fluid is more uniform.

[0032] In the preferred embodiment of the present application, with reference to Figure 1 and Figure 2 The side wall of the hollow permanent magnet synchronous motor 6 is provided with a containing cavity 63, and the peripheral side of the hollow permanent magnet synchronous motor 6 is fixedly connected with two liquid injection pipes 64. One liquid injection pipe 64 is used for injecting cooling liquid into the containing cavity 63, and the other is used for discharging the cooling liquid in the containing cavity 63, so that the cooling liquid circulates in the containing cavity 63 and carries away the heat generated by electromagnetic rotation of the hollow permanent magnet synchronous motor 6, thereby improving the service life of the hollow permanent magnet synchronous motor 6.

[0033] In the preferred embodiment of the present application, with reference to Figure 1 and Figure 2 The lifting assembly 4 comprises a servo motor 41, a lead screw 42 and a pulley 43. The servo motor 41 is mounted on the top plate 11 of the fixed frame 1, the lead screw 42 is installed at the top end of the fixed frame 1, and the pulley 43 is fixedly installed at the top end of the lead screw 42. A synchronous belt (not shown in the figure) is sleeved between the output shaft of the servo motor 41 and the pulley 43. The upper plate 51 of the sliding frame 5 is centrally embedded with a nut pair 44, and the nut pair 44 is threadedly connected to the peripheral side of the lead screw 42. When the servo motor 41 drives the pulley 43 to rotate, the lead screw 42 rotates forward or reversely with the pulley 43, drives the nut pair 44 to ascend or descend, and drives the sliding frame 5 to move up and down relative to the fixed frame 1, thereby realizing the function of driving the sliding frame 5 to slide.

[0034] According to the disclosure and teaching of the above description, the person skilled in the art of the present application can also change and modify the above embodiments. Therefore, the present application is not limited to the above specific embodiments, and any obvious improvement, replacement or modification made by the person skilled in the art on the basis of the present application belongs to the protection scope of the present application. In addition, although some specific terms are used in the specification, these terms are only for convenience of description and do not constitute any limitation on the present application.

Claims

1. A high-precision intelligent polishing head, characterized in that, Including fixed frame (1), nose base (2) and polishing disc (3), one end of the fixed frame (1) is provided with lifting assembly (4), the inside of the fixed frame (1) is slidably provided with sliding frame (5), the lifting assembly (4) is used to drive the sliding frame (5) to slide, the inside of the sliding frame (5) is fixedly connected with hollow permanent magnet synchronous motor (6); The nose base (2) is fixedly connected to the end of the fixed frame (1) away from the lifting assembly (4), the sliding sleeve (7) is slidably arranged in the nose base (2), the sliding sleeve (7) is fixedly connected to the end of the sliding frame (5) away from the lifting assembly (4), the main shaft (8) is rotatably connected in the sliding sleeve (7), one end of the main shaft (8) is coaxially fixedly connected to the rotor (62) of the hollow permanent magnet synchronous motor (6), and the polishing disc (3) is fixedly connected to the other end of the main shaft (8).

2. The high-precision intelligent polishing head of claim 1, wherein, The inner wall of the both ends of the fixed frame (1) is provided with a limiting piece (9), the limiting piece (9) is made of optimax glue material, and the limiting piece (9) is used for abutting against the sliding frame (5).

3. The high-precision intelligent polishing head of claim 1, wherein, The sliding frame (5) includes an upper plate (51) and a lower plate (52), the upper plate (51) is fixedly connected with a distance adjusting air cylinder (53), and the lower plate (52) is fixedly connected with an auxiliary square frame (54).

4. The high-precision intelligent polishing head of claim 1, wherein, The main shaft (8) is embedded with a through-flow pipe (81), one end of the through-flow pipe (81) is used for injecting grinding fluid, the other end of the through-flow pipe (81) is communicated with the polishing disc (3), and the polishing disc (3) is provided with a plurality of through holes (31) away from the main shaft (8).

5. The high-precision intelligent polishing head of claim 4, wherein, The polishing disc (3) includes a grinding disc (32) and a mounting disc (33), a plurality of through holes (31) are arranged on the grinding disc (32) in the circumferential direction, an annular groove (331) is arranged on the mounting disc (33), the annular groove (331) is located on the circumference of the through hole (31), and a flow guide groove (332) is further arranged on the mounting disc (33) in the radial direction, one end of the flow guide groove (332) is communicated with the through-flow pipe (81), and the other end of the flow guide groove (332) is communicated with the annular groove (331).

6. The high-precision intelligent polishing head of claim 1, wherein, The side wall of the hollow permanent magnet synchronous motor (6) is provided with a containing cavity (63), and the peripheral side of the hollow permanent magnet synchronous motor (6) is provided with a liquid injection pipe (64), the liquid injection pipe (64) is used for injecting cooling liquid into the containing cavity (63).

7. The high-precision intelligent polishing head of claim 1, wherein, The lifting assembly (4) comprises a servo motor (41), a lead screw (42) and a pulley (43), the servo motor (41) is arranged on the fixed frame (1), the lead screw (42) is arranged through the fixed frame (1), the pulley (43) is fixedly connected to one end of the lead screw (42), a synchronous belt is sleeved between the output shaft of the servo motor (41) and the pulley (43), and a nut pair (44) is embedded on the sliding frame (5) and is threadedly connected to the periphery of the lead screw (42).

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