Complex molded surface part ultrasonic vibration grinding device suitable for surface grinding machine and operation process of complex molded surface part ultrasonic vibration grinding device

Abstract

The invention discloses a complex profile part ultrasonic vibration grinding device suitable for a surface grinding machine and an operation process thereof, a workpiece is fixed at the output end of a stepped amplitude-change pole of an ultrasonic vibration device through a bolt, and a sliding bearing supporting seat is mounted in the middle of a shell of the ultrasonic vibration device and plays a role in supporting a sliding bearing; the tail portion of the ultrasonic vibration device is fixed to the indexing chuck through a chuck, the servo motor drives the indexing chuck to achieve accurate indexing, and the sliding bearing supporting seat and the indexing chuck are fixed to a surface grinding machine workbench through bolts. The ultrasonic generator is started, a high-frequency electric signal is transmitted to the piezoelectric ceramic transducer assembly through the cable, the high-frequency electric signal is converted into high-frequency longitudinal vibration, and the high-frequency longitudinal vibration is transmitted to the workpiece after being amplified by the stepped amplitude-change pole, so that the workpiece generates high-frequency ultrasonic vibration. Ultrasonic vibration auxiliary grinding of complex surface parts on a surface grinding machine is achieved, the removal rate of grinding materials is increased, the grinding force and the grinding temperature are reduced, and grinding burns are reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of precision and ultra-precision machining and special machining, and in particular relates to an ultrasonic vibration grinding device for complex surface parts suitable for a surface grinder. Background Art

[0002] Grinding of aviation parts is characterized by high-strength materials, complex shapes and strict precision requirements. These factors make the grinding process face multiple difficulties: the need for special machine tools and grinding tools increases costs and limits applicability; since it is difficult for grinding fluid to enter the processing area, the grinding temperature rises, which can easily cause surface burns; complex surfaces often require high-precision process control, which increases the difficulty of processing. These challenges limit processing efficiency and the overall quality of parts. Therefore, a new processing method is needed to improve the quality and efficiency of complex surface parts.

[0003] Ultrasonic vibration-assisted processing, especially ultrasonic vibration-assisted grinding, has attracted attention due to its many advantages in the processing of aviation parts. The grinding of aviation parts faces challenges such as high-strength materials, complex shapes and strict precision requirements, resulting in high processing costs, low efficiency and difficult to ensure surface quality. The introduction of ultrasonic vibration has effectively improved these problems. By applying high-frequency vibration, the cutting force and cutting temperature are significantly reduced, reducing the heat generated during the grinding process, thereby preventing surface burns and improving the processing quality. At the same time, ultrasonic vibration causes the contact between the grinding wheel and the workpiece to become intermittent. This innovative grinding mechanism not only improves the stability of the processing, reduces tool wear, but also extends the service life of the tool. In addition, ultrasonic vibration also improves the penetration effect of the grinding fluid, enhances the cooling and lubrication effects, and further improves the processing efficiency. Ultrasonic vibration-assisted grinding provides an efficient and stable solution for the processing of aviation parts, which helps to improve the overall processing quality and efficiency and meet the aviation industry's demand for high-precision and high-performance parts.

[0004] The patent application document with application number CN202111374987.X submitted by Nanjing University of Aeronautics and Astronautics discloses an ultrasonic vibration device suitable for ultrasonic vibration-assisted grinding of gears. The piezoelectric ceramic element in the device generates high-frequency longitudinal vibration under the excitation of the electrical signal of the ultrasonic generator, amplifies the vibration displacement through the hollow conical amplitude transformer, and transmits the amplified vibration displacement to the gear to be processed which is fastened by the center fixing bolt. An annular vibration isolation groove is provided inside the hollow conical amplitude transformer, and a flange is installed circumferentially. The flange is also provided with a vibration isolation groove. These structures can not only effectively weaken the ultrasonic vibration effect at the position of the center fixing bolt, but also enhance the vibration transmission ability of the contact surface between the gear and the amplitude transformer, thereby generating high-frequency ultrasonic vibration on the gear processing surface.

[0005] The patent application document with application number CN201920465515.7 submitted by Nanjing Hangpu Machinery Technology Co., Ltd. discloses a vacuum adsorption ultrasonic flexible vibration device, which is composed of an ultrasonic vibrator, a vibration adapter plate, a stage and a first quick pneumatic joint; the ultrasonic vibrator is provided with a center hole at the front end and a side wall hole is opened on the side wall, the vibration adapter plate is fixed to the front end of the ultrasonic vibrator, and its center hole is connected to the center hole of the ultrasonic vibrator; the stage is fixed to the vibration adapter plate, and its center hole is connected to the center hole of the vibration adapter plate; the first quick pneumatic joint is connected to the side wall hole of the ultrasonic vibrator. The device combines vacuum adsorption technology with ultrasonic vibration, and is suitable for the processing of 3C glass, ceramics and other materials, thereby improving the processing efficiency of hard and brittle materials.

[0006] However, the current ultrasonic vibration equipment is expensive, there are few types of ultrasonic vibration grinding equipment available on the market, and there is still a lack of optimized equipment for specific materials and complex shapes. Ultrasonic vibration devices for large and complex surface parts are still a difficult problem to solve. Aviation parts processing has problems such as complex shapes and difficulty in applying ultrasonic vibration. Summary of the invention

[0007] In order to solve the deficiencies of the prior art, the present invention provides an ultrasonic vibration grinding device for complex surface parts suitable for surface grinders and its operating process, which has the characteristics of strong machine tool adaptability, easy operation, easy implementation and good grinding effect.

[0008] In order to realize the above invention, the technical solution adopted by the present invention is: An ultrasonic vibration grinding device for complex surface parts suitable for surface grinders comprises a grinding wheel, parts to be processed, an ultrasonic vibration device, a sliding bearing support seat, a dividing chuck, a servo motor and a machine tool workbench.

[0009] The part to be processed is fixed to the ultrasonic vibration device by bolts, the tail of the ultrasonic vibration device is fixed to the over-indexing chuck by the claws on the indexing chuck, the servo motor drives the indexing chuck to realize rotation and precise indexing, the indexing chuck is connected to the machine tool workbench by threads, and the sliding bearing support seat is placed in the middle position of the ultrasonic vibration device and is connected to the machine tool workbench by threads.

[0010] The workpiece rotation system includes a servo motor, a dividing chuck, and a sliding bearing support seat, wherein the dividing chuck is driven by the servo motor to perform rotational motion and achieve precise dividing; the dividing chuck is fixed to the machine tool workbench by bolts; the sliding bearing support seat is composed of an upper and lower part connected by bolts, and is fixed to the machine tool workbench by bolts.

[0011] The ultrasonic vibration horn assembly includes a piezoelectric ceramic transducer assembly and a horn; wherein, the transducer is fixed together with a rear end cover, a piezoelectric ceramic sheet, an electrode sheet, and a front end cover by insulating bolts to form a piezoelectric ceramic transducer assembly, and the front end of the piezoelectric ceramic transducer assembly is connected to the horn to form an ultrasonic vibration horn assembly, and the horn flange is threadedly connected to the shell through the end cover and pressed tightly in the shell; when the ultrasonic generator is turned on, a high-frequency electrical signal is transmitted to the aviation plug connected to the piezoelectric ceramic transducer assembly through a cable, and then transmitted to the piezoelectric ceramic transducer assembly, and the high-frequency electrical signal is converted into a high-frequency longitudinal vibration, and is amplified by the stepped horn and transmitted to the workpiece, so that the workpiece generates high-frequency ultrasonic vibration, and ultrasonic vibration-assisted grinding of the workpiece is realized. The processed parts are complex surface parts such as gears or impellers.

[0012] The sliding bearing support seat includes a lower support seat and an upper matching sleeve, and its inner ring is provided with an oil groove with a width of 3mm and a depth of 2mm. The upper matching sleeve is provided with an oil injection threaded hole. The lower support seat and the upper matching sleeve are fixed to the mounting groove of the shell through a threaded connection. Grease is injected through the oil injection threaded hole to form an oil film on the contact surface between the inner ring of the sliding bearing support seat and the mounting groove, thereby realizing the sliding bearing function and support function during the rotation of the vibration device.

[0013] The end of the shell is provided with a boss, which cooperates with the flange of the horn, and the end of the shell is threadedly connected to the end cover. The horn is fixed to the shell by applying a pre-tightening force. The middle of the shell is provided with a sliding bearing installation groove, and the side is provided with an aviation socket for connecting the ultrasonic generator. The horn is a stepped horn, and a flange is provided at the displacement node. The horn is installed on the shell with the help of the flange combined with the end cover thread.

[0014] Before grinding is implemented, the part to be processed is fixed to the small end of the stepped horn of the ultrasonic vibration system by bolt connection, and the end of the shell of the ultrasonic vibration system is clamped on the indexing chuck. At the same time, the shell is supported by a sliding bearing support seat to improve processing stability. Turn on the ultrasonic generator, and the high-frequency electrical signal is transmitted to the piezoelectric ceramic transducer assembly through the cable. The piezoelectric ceramic transducer converts the high-frequency electrical signal transmitted by the ultrasonic generator into high-frequency longitudinal vibration, which is amplified and transmitted to the workpiece through the stepped horn, thereby realizing ultrasonic vibration-assisted grinding of the workpiece. During grinding, the servo motor is controlled to drive the indexing chuck to rotate, so that the workpiece rotates according to the processing requirements. According to the shape of the workpiece, the machine tool spindle rotates and moves, and the worktable moves to meet the processing requirements, so that complex surface parts can be ultrasonically vibration-assisted grinding on the surface grinder.

[0015] The beneficial effects of the present invention are: 1. The ultrasonic vibration grinding device for complex surface parts can be used for surface grinders. The equipment is easy to disassemble, easy to operate, easy to implement and has good grinding effect. Compared with special machine tools, the cost is greatly reduced and the applicability is wide. Compared with ordinary grinding, the grinding force and grinding temperature are effectively reduced, and the surface quality is also improved.

[0016] 2. The present invention utilizes ultrasonic vibration technology in combination with mechanical processing technology to realize ultrasonic vibration composite processing of complex surface parts. The parts to be processed are fixed to the small end of the stepped horn of the ultrasonic vibration system by bolt connection. The shell end of the ultrasonic vibration system is clamped on the indexing chuck. At the same time, the shell is supported by a sliding bearing support seat to improve processing stability. The ultrasonic generator is turned on, and the high-frequency electrical signal is transmitted to the piezoelectric ceramic transducer assembly through a cable. The piezoelectric ceramic transducer converts the high-frequency electrical signal transmitted by the ultrasonic generator into a high-frequency longitudinal vibration, which is amplified and transmitted to the workpiece through the stepped horn, thereby realizing ultrasonic vibration-assisted grinding of the workpiece. During the grinding process, the indexing chuck is driven to rotate by controlling the servo motor, so that the workpiece rotates according to the processing requirements. According to the shape of the workpiece, the machine tool spindle rotates and moves, and the worktable moves to meet the processing requirements, so as to realize ultrasonic vibration-assisted grinding of complex surface parts on a surface grinder.

[0017] 3. The present invention realizes ultrasonic vibration-assisted grinding of complex-shaped aviation parts on a surface grinder. The parts can be disc-shaped, gear-shaped or impeller-shaped. It not only increases the grinding material removal rate, reduces the grinding force and grinding temperature, and reduces grinding burns, but also greatly improves the grinding quality. It has broad application prospects and good economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of the ultrasonic vibration assisted grinding device for a surface grinder of the present invention; Figure 2 is a side view of the ultrasonic vibration assisted grinding device for a surface grinder of the present invention; Figure 3 It is a structural schematic diagram of the indexing chuck 5; Figure 4 The structure diagram of the ultrasonic vibration system; (a) sectional view, (b) right view; Figure 5 The shell structure diagram; (a) appearance diagram, (b) BB line section view; (c) AA line section view; Figure 6 The end cover structure diagram; (a) front view; (b) side view; Figure 7 The structural diagram of the sliding bearing support seat; (a) front view; (b) side view; Figure 8 It is a structural schematic diagram of a piezoelectric ceramic transducer assembly; Fig. 9 This is a structural diagram of a stepped horn; Fig.10 This is a comparison chart of the grinding surface and roughness curve under a 3D video microscope; Fig.11 This is the displacement cloud diagram of the gear assembly amplitude rod finite element harmonic response analysis; it can be seen that through the harmonic response analysis, the maximum displacement is 5μm at 20.9kHz. Among them: (a) vibration displacement cloud diagram; (b) deformation in the x direction, (c) deformation in the y direction; (d) frequency response diagram; Fig.12 This is the amplitude and frequency test diagram of the gear ultrasonic vibration system. The ultrasonic amplitude is measured by a laser displacement sensor. At 20.9KHz and 30% power, the vibration amplitude is 5μm.

[0019] Among them, 1 is a grinding wheel, 3 is a part to be processed, 3 is an ultrasonic vibration system, 4 is a sliding bearing support seat, 5 is a dividing chuck, 6 is a servo motor, 7 is a machine tool worktable, 8 is a claw, 9 is a shell, 10 is an ultrasonic transducer, 11 is a stepped amplitude rod, 12 is an end cover, 13 is a lower support seat, 14 is an upper matching sleeve, 15 is an oil filling threaded hole, 16 is an aviation socket, 17 is a mounting groove, 18 is a threaded hole, 19 is a front cover, 20 is a piezoelectric ceramic, 21 is an electrode sheet, 22 is a rear cover, 23 is an insulating bolt, 24 is a threaded hole, 25 is the large end of the amplitude rod, 26 is the amplitude rod flange, 27 is the small end of the amplitude rod, 28 is the workpiece mounting position, and 29 is a threaded hole. DETAILED DESCRIPTION

[0020] The implementation process of the present invention is described in detail below with reference to specific embodiments and drawings. Example

[0021] Figure 1 The schematic diagram of the three-dimensional structure of the ultrasonic vibration assisted grinding device for a surface grinder of the present invention is shown in FIG. Figure 2 1 is a side view of the ultrasonic vibration assisted grinding device for a surface grinder of the present invention. Figure 1 As shown, an ultrasonic vibration grinding device for complex surface parts suitable for surface grinders includes: a grinding wheel 1, a machine tool table 7, a workpiece rotation system, an ultrasonic vibration system, and a sliding bearing support seat; wherein the workpiece rotation system, the grinding wheel 1, and the bottom of the sliding bearing support seat are all fixed to the machine tool table 7, one end of the ultrasonic vibration system is connected to the part to be processed, driving the part to be processed to vibrate longitudinally, and the other end is connected to the workpiece rotation system; the workpiece rotation system drives the ultrasonic vibration system and the part to be processed to rotate in the Z axis, and the grinding wheel is placed above the part to be processed and can move in the vertical plane to grind the part to be processed. The sliding bearing support is clamped in the middle of the shell of the ultrasonic vibration system.

[0022] Specifically, the above-mentioned part to be processed 2 is fixed to the ultrasonic vibration system 3 by bolts, the tail of the ultrasonic vibration system 3 is fixed to the over-indexing chuck 5 through the claws 8 on the indexing chuck 5, the servo motor 6 drives the indexing chuck 5 to achieve rotation and precise indexing, and the bottom of the indexing chuck 5 is connected to the machine tool worktable 7 by threads.

[0023] Figure 3 It is a schematic diagram of the indexing chuck structure; Figure 3 As shown, the workpiece rotation system includes a servo motor 6 and a dividing chuck 5, wherein the bottom of the dividing chuck 5 is fixed to the machine tool worktable 7 by bolts, and is driven by the servo motor 6 to perform rotational motion and achieve precise dividing.

[0024] Figure 4 is the structural diagram of the ultrasonic vibration system. Figure 8 This is a schematic diagram of the structure of the piezoelectric ceramic transducer assembly. Figure 4 , 8 As shown, the ultrasonic vibration system includes a piezoelectric ceramic transducer assembly and a horn, which are connected by bolts; wherein, the insulating bolts 23 fix the rear end cover 22, the piezoelectric ceramic sheet 20, the electrode sheet 21, and the front end cover 19 together to form a piezoelectric ceramic transducer assembly, and the front end of the piezoelectric ceramic transducer assembly is connected to the horn to form an ultrasonic vibration system. Fig. 9 For the structure diagram of the stepped horn, refer to Fig. 9 As shown, the horn used in the present invention is a stepped horn, the large end 25 of the horn is connected to the end of the ultrasonic vibration horn assembly by bolts, and the small end 27 extends out of the shell to connect the part to be processed. A horn flange 26 is provided at the displacement node, and the ultrasonic vibration system is pressed into the shell 9 through the end cover 12 and the shell 9. The ultrasonic generator is turned on, and the high-frequency electrical signal is transmitted to the aviation socket 16 connected to the piezoelectric ceramic transducer assembly through the cable, and then transmitted to the piezoelectric ceramic transducer assembly. The high-frequency electrical signal is converted into high-frequency longitudinal vibration, and is amplified by the stepped horn and transmitted to the workpiece, so that the workpiece generates high-frequency ultrasonic vibration, thereby realizing ultrasonic vibration-assisted grinding of the workpiece. Fig.11 , 12 Through finite element harmonic response analysis and laser displacement sensor measurement, the maximum displacement is 5 μm at 20.9 kHz. The processed parts are complex surface parts such as gears or impellers.

[0025] Figure 7 For the structural diagram of the sliding bearing support seat, refer to Figure 7As shown, the sliding bearing support seat 4 includes a lower support seat 13 and an upper matching sleeve 14, which are assembled into a hollow structure for clamping the housing. The inner ring is provided with an oil groove with a width of 3 mm and a depth of 2 mm, and the upper matching sleeve 14 is provided with an oil injection threaded hole 15. The lower support seat 13 and the upper matching sleeve 14 are fixed in the mounting groove 17 on the outer periphery of the housing 9 through threaded connection. Grease is injected through the oil injection threaded hole 15 to form an oil film on the contact surface between the inner ring of the sliding bearing support seat 4 and the mounting groove 17, so as to realize the sliding bearing function and the supporting function during the rotation of the vibration device.

[0026] Figure 5 This is a shell structure diagram, the shell 9 end is provided with a boss, which cooperates with the amplitude rod flange 26, the shell 9 end is threadedly connected to the end cover 12, and the large end of the amplitude rod is fixed in the shell by applying a pre-tightening force, a mounting groove 17 is provided in the middle of the outer periphery of the shell, and an aviation socket 16 is provided on the side for connecting the ultrasonic generator.

[0027] The operation process of the ultrasonic vibration grinding device for complex surface parts suitable for surface grinders is as follows: (1) Before grinding, the part to be processed is fixed to the small end of the stepped amplitude rod of the ultrasonic vibration system by bolt connection. The end of the shell of the ultrasonic vibration system is clamped on the indexing chuck. At the same time, the middle part of the shell is clamped and supported by the sliding bearing support seat to improve the processing stability.

[0028] (2) Turn on the ultrasonic generator, and the high-frequency electrical signal is transmitted to the piezoelectric ceramic transducer assembly through the cable. The piezoelectric ceramic transducer converts the high-frequency electrical signal transmitted by the ultrasonic generator into high-frequency longitudinal vibration, which is amplified by the stepped amplitude rod and transmitted to the workpiece, thereby realizing ultrasonic vibration-assisted grinding of the workpiece. Fig.11 As shown in the figure, through finite element harmonic response analysis, uniform vibration displacement is formed at the part. Through the laser displacement sensor, it is measured that at 20.9kHz, a displacement of 5μm is generated, as shown in the figure. Fig.12 shown.

[0029] (3) During grinding, the servo motor is controlled to drive the indexing chuck to rotate, so that the workpiece rotates according to the processing requirements. According to the shape of the workpiece, the machine tool spindle rotates and moves, and the worktable moves to meet the processing requirements and realize ultrasonic vibration-assisted grinding of complex surface parts on the surface grinder.

[0030] Based on the above design, ultrasonic vibration assisted grinding of complex surface parts on surface grinders is realized, so that in the process of aviation parts grinding, the grinding force and grinding temperature are reduced, the processing accuracy is improved, and the surface quality is improved. Fig.10 As shown, the surface morphology and roughness comparison between ultrasonic vibration assisted grinding and conventional grinding under three-dimensional video.

Claims

1. An ultrasonic vibration grinding device for complex surface parts suitable for surface grinders, characterized in that: include: Grinding wheel (1), machine tool worktable (7), workpiece rotation system, ultrasonic vibration system, sliding bearing support seat (4); The workpiece rotating system, the grinding wheel support column and the bottom of the sliding bearing support seat are all fixed on the machine tool worktable (7); one end of the ultrasonic vibration system is connected to the part to be processed through the amplitude rod, driving the part to be processed to perform high-frequency longitudinal vibration of the amplified signal, and the other end is connected to the workpiece rotating system; the workpiece rotating system drives the ultrasonic vibration system and the part to be processed to rotate on the Z axis, and the grinding wheel is placed above the part to be processed and can move in the vertical plane, so as to perform ultrasonic vibration-assisted grinding on the part to be processed; The sliding bearing support is clamped in the middle of the housing of the ultrasonic vibration system; The machined parts are complex surface parts including but not limited to gears or impellers.

2. The ultrasonic vibration grinding device for complex surface parts suitable for surface grinding machines according to claim 1 is characterized in that: The workpiece rotation system comprises a servo motor (6) and a dividing chuck (5); wherein the bottom of the dividing chuck is fixed to the machine tool worktable (7) by bolts, and the servo motor drives the ultrasonic vibration system, thereby driving the workpiece to be processed to perform rotational motion and achieve precise division.

3. The ultrasonic vibration grinding device for complex surface parts suitable for surface grinders according to claim 1 is characterized in that: The ultrasonic vibration system comprises a piezoelectric ceramic transducer assembly and a horn, which are connected by bolts; wherein the insulating bolts (23) fix the rear end cover (22), the piezoelectric ceramic sheet (20), the electrode sheet (21), and the front end cover (19) together to form the piezoelectric ceramic transducer assembly, and the front end of the piezoelectric ceramic transducer assembly is connected to the horn to form the ultrasonic vibration system.

4. The ultrasonic vibration grinding device for complex surface parts suitable for surface grinding machines according to claim 3 is characterized in that: The horn is a stepped horn, the cross section of the large end (25) of the horn is cylindrical and connected to the end of the ultrasonic vibration horn assembly by bolts and internal threads, the small end (27) extends out of the shell and is used to connect to the part to be processed, and a transition section with a truncated cone cross section is directly provided between the large end and the small end; a horn flange (26) is provided at the displacement node, and is threadedly connected to the shell through an end cover (12) to press the ultrasonic vibration system into the shell (9).

5. The ultrasonic vibration grinding device for complex surface parts suitable for surface grinding machines according to claim 1 is characterized in that: The sliding bearing support seat (4) comprises a lower support seat (13) and an upper matching sleeve (14), which are assembled into a hollow structure for clamping the housing; the lower support seat (13) and the upper matching sleeve (14) are fixed in the mounting groove (17) on the outer periphery of the housing (9) by means of threaded connection.

6. The ultrasonic vibration grinding device for complex surface parts suitable for surface grinding machines according to claim 5 is characterized in that: The inner ring of the hollow structure is provided with an oil groove, and the upper matching sleeve (14) is provided with an oil injection threaded hole (15). Lubricating grease is injected through the oil injection threaded hole to form an oil film on the contact surface between the inner ring of the sliding bearing support seat and the mounting groove (17), thereby realizing the sliding bearing function and the supporting function during the rotation of the vibration device.

7. The ultrasonic vibration grinding device for complex profile parts suitable for surface grinding machines according to claim 1, characterized in that: The end of the housing (9) is provided with a boss which cooperates with the horn flange (26). The end of the housing (9) is threadedly connected to the end cover (12). The horn flange is fixed to the housing by applying a pre-tightening force. A sliding bearing mounting groove (17) is provided in the middle of the housing. An aviation socket (16) is provided on the side for connecting an ultrasonic generator.

8. The operating process of the ultrasonic vibration grinding device for complex surface parts suitable for surface grinding machines according to claim 1 is characterized in that: Here are the steps: (1) Before grinding, the part to be processed is fixed to the small end of the horn of the ultrasonic vibration system by bolt connection, and the end of the shell of the ultrasonic vibration system is clamped on the indexing chuck. At the same time, the middle part of the shell is clamped and supported by the sliding bearing support seat to improve the processing stability; (2) Turn on the ultrasonic generator, and the high-frequency electrical signal is transmitted to the piezoelectric ceramic transducer component of the ultrasonic vibration system through the cable. The piezoelectric ceramic transducer converts the high-frequency electrical signal transmitted by the ultrasonic generator into high-frequency longitudinal vibration, which is amplified by the amplitude transformer and transmitted to the workpiece, thereby realizing ultrasonic vibration-assisted grinding of the workpiece; (3) During grinding, the servo motor is controlled to drive the indexing chuck to rotate, which drives the workpiece to rotate according to the processing requirements. At the same time, according to the shape of the workpiece, the machine tool spindle rotates and moves, and the worktable moves to meet the processing requirements, and ultrasonic vibration-assisted grinding of complex surface parts on the surface grinder is realized.

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