CN112936032A - Flexible precision grinding operation platform - Google Patents
Flexible precision grinding operation platform Download PDFInfo
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- CN112936032A CN112936032A CN202110254618.0A CN202110254618A CN112936032A CN 112936032 A CN112936032 A CN 112936032A CN 202110254618 A CN202110254618 A CN 202110254618A CN 112936032 A CN112936032 A CN 112936032A
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- grinding head
- connecting plate
- wheel
- operation platform
- servo motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- B24B21/18—Accessories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- B24B21/18—Accessories
- B24B21/20—Accessories for controlling or adjusting the tracking or the tension of the grinding belt
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a flexible precise grinding operation platform, which comprises an XY-axis sliding table for clamping a workpiece and a grinding head mechanism which is positioned above the XY-axis sliding table and moves along the Z-axis direction; the grinding head mechanism comprises a first servo motor, a lead screw, an elastic body and a grinding head, wherein the elastic body stretches along the Z-axis direction; the first servo motor drives the screw rod to move up and down; the bottom end of the lead screw is abutted against the upper end of the elastic body. In the flexible precise grinding operation platform, the grinding head can realize flexible contact and constant pressure floating relative to the workpiece, so that vibration can be effectively reduced, and the quality of the processed surface of the workpiece and the service life of the grinding head are guaranteed. Because the pressure applied to the workpiece by the grinding head depends on the displacement of the lead screw and the elastic modulus of the elastic body, the pressure applied to the workpiece by the grinding head can be accurately obtained by controlling and obtaining the rotation angle output outwards by the first servo motor by the flexible precise grinding operation platform, and technicians can conveniently analyze the grinding and polishing mechanism of the workpiece and materials thereof.
Description
Technical Field
The invention relates to the field of machining, in particular to a flexible precise grinding operation platform.
Background
The abrasive belt grinding is an ideal and compatible grinding and polishing method capable of realizing flexible fairing and precise quality control, can obtain good processing surface quality and improve grinding processing efficiency and product percent of pass, and is gradually and successfully applied to the precise grinding processing field of high-performance components such as aircraft engine blades, blisks and the like.
However, for the research on the polishing mechanism of the materials difficult to process, such as single crystal high temperature alloys, titanium alloys, composite materials, and the like, which are adopted in the field of national defense, the currently used numerical control abrasive belt grinding machine is only suitable for production and processing, and is not suitable for the research and analysis on the polishing mechanism.
Therefore, it is a technical problem to be solved by those skilled in the art to provide a grinding apparatus which can satisfy the elastic grinding characteristics peculiar to the belt grinding and can be used for studying the material surface forming mechanism.
Disclosure of Invention
The invention aims to provide a flexible precise grinding operation platform which can accurately control the pressure applied by a grinding head to a workpiece on the basis of meeting the flexible machining requirement between the grinding head and the workpiece, is convenient for workers to obtain relevant machining parameters and is used for grinding and polishing mechanism research of the workpiece and materials thereof.
In order to achieve the aim, the invention provides a flexible precise grinding operation platform which comprises an XY-axis sliding table for clamping a workpiece and a grinding head mechanism which is positioned above the XY-axis sliding table and moves along the Z-axis direction; the grinding head mechanism comprises a first servo motor, a lead screw, an elastic body stretching along the Z-axis direction and a grinding head arranged at the bottom of the elastic body; the first servo motor drives the lead screw to move up and down; the bottom end of the lead screw abuts against the upper end of the elastic body.
Preferably, the device further comprises a Z-axis sliding table; the grinding head mechanism further comprises a connecting plate, a lead screw nut seat and a first sleeve; the connecting plate is fixed on the mounting seat of the Z-axis sliding table; the first servo motor and the first sleeve are both fixed on the connecting plate; the screw nut seat is pivoted to a first position of the connecting plate through the first sleeve; the first servo motor drives the lead screw nut seat to rotate in a fixed shaft mode.
Preferably, the first servo motor drives the lead screw nut seat to rotate through a synchronous belt mechanism.
Preferably, the grinding head mechanism further comprises a chute plate and a blocking stick; the sliding groove plate is provided with a sliding groove which is horizontally arranged in a through manner; one end of the blocking rod is fixedly connected with the lead screw, and the other end of the blocking rod is embedded into the sliding groove to slide up and down.
Preferably, the grinding head is a grinding wheel; the elastic body comprises a first spring; the grinding head mechanism further comprises a driving assembly arranged between the first spring and the abrasive belt wheel.
Preferably, the drive assembly comprises a second servo motor, a drive wheel and a sanding belt; the driving wheel is fixed on an output shaft of the second servo motor, and the abrasive belt is tensioned between the driving wheel and the abrasive belt wheel.
Preferably, the grinding head mechanism further comprises a drive connecting plate;
the top end of the driving connecting plate is fixedly connected to the first spring;
the middle part of the driving connecting plate is fixedly connected with the second servo motor;
the bottom end of the driving connecting plate is hinged with the abrasive belt wheel fixed shaft.
Preferably, a tensioning mechanism is further included, arranged next to the sanding belt, for adjusting the degree of tensioning of the sanding belt; the tensioning mechanism comprises a tensioning wheel, a central shaft and a tensioning connecting rod connected between the tensioning wheel and the central shaft; the periphery of the tension wheel is attached to the inner ring of the abrasive belt; when the central shaft rotates, the tensioning connecting rod is driven to swing in the plane of the abrasive belt.
Preferably, the grinding head is embodied as a single abrasive grain assembly; the elastic body comprises a first spring; the abrasive tips of the single abrasive particle assembly face downward.
Preferably, a driving connecting plate, a second sleeve, a second spring and a grinding head connecting plate are further arranged between the lower end of the first spring and the grinding head;
the second spring is arranged in the second sleeve and is coaxial with the first spring; the grinding head is positioned on the grinding head connecting plate; the top end of the second spring is connected to the driving connecting plate, and the bottom end of the second spring is connected to the grinding head connecting plate.
Compared with the background technology, the flexible precise grinding operation platform provided by the invention comprises an XY-axis sliding table for clamping a workpiece and a grinding head mechanism which is positioned above the XY-axis sliding table and moves along the Z-axis direction.
In the flexible precise grinding operation platform, a grinding head mechanism comprises a first servo motor, a lead screw, an elastic body stretching along the Z-axis direction and a grinding head arranged at the bottom of the elastic body; the first servo motor drives the screw rod to move up and down; the bottom end of the lead screw is abutted against the upper end of the elastic body.
It can be seen that, with this flexible precision grinding operation platform, the pressure applied to the workpiece by the grinding head depends on the displacement amount of the screw in the up-down direction and the elastic modulus of the elastic body. Therefore, a technician can accurately control the grinding pressure applied to the workpiece by the grinding head through the first servo motor to realize constant-pressure floating, so that the flexible contact and constant-pressure floating of the grinding head and the workpiece are met, the vibration in the grinding process is effectively reduced, the processing surface quality of the workpiece and the service life of the grinding head are guaranteed, the pressure applied to the workpiece by the grinding head is conveniently acquired by acquiring the corner output outwards by the first servo motor, and the grinding and polishing mechanism of the workpiece and the material thereof can be conveniently analyzed by the technician in combination with the specific processing effect of the workpiece.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a grinding head mechanism table provided in an embodiment of the present invention;
fig. 2 is a sectional view of a grinding head mechanism provided in an embodiment of the present invention.
The automatic grinding machine comprises a 6-abrasive belt, a 7-connecting plate, an 8-synchronous belt, a 9-first servo motor, a 10-first sleeve, a 11-sliding groove plate, a 12-blocking rod, a 13-lead screw, a 14-lead screw nut seat, a 15-first spring, a 16-second servo motor, a 17-driving wheel, an 18-spring clamping shaft, a 19-driving connecting plate, a 21-second sleeve, a 22-second spring, a 23-supporting shaft, a 24-grinding head connecting plate, a 25-supporting fork, a 26-abrasive belt wheel, a 27-adjusting bolt, a 28-tensioning wheel, a 29-tensioning wheel mounting seat, a 30-tensioning connecting rod, a 31-central shaft and a 32-adjusting shaft.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a grinding head mechanism provided in an embodiment of the present invention; fig. 2 is a sectional view of a grinding head mechanism provided in an embodiment of the present invention.
The invention provides a flexible precise grinding operation platform which comprises an XY axis sliding table and a grinding head mechanism; the XY-axis sliding table is used for clamping a workpiece and driving the workpiece to move along the X-axis direction and the Y-axis direction; the grinding head mechanism is positioned above the XY-axis sliding table, moves along the Z-axis direction and is used for grinding a workpiece clamped on the XY-axis sliding table.
In the flexible precise grinding operation platform, the grinding head mechanism comprises a first servo motor 9, a lead screw 13, an elastic body and a grinding head. The first servo motor 9 is connected with the lead screw 13 and is used for driving the lead screw 13 to move along the Z-axis direction, namely the up-down direction; the bottom end of the screw 13 is attached to the upper end of the elastic body, and the screw 13 drives the elastic body to stretch along the Z-axis direction, namely the up-down direction, when moving up and down; the bottom of elastomer is located to the grinding head, and when the work piece in XY axle slip table was installed and blocked in the grinding head contact, first servo motor 9 opened and control lead screw 13 and reciprocate the distance to exert decurrent effort to the grinding head through the elastomer, combine the work piece along with the motion of XY axle slip table, realize the abrasive machining of grinding head to the work piece.
It can be seen that the flexible precision grinding operation platform can control the rotation angle of the first servo motor 9 to enable the lead screw 13 to move upwards and downwards by a determined displacement amount, so that a specific pressure is applied to the grinding head through the elastic body, and finally the grinding head applies a constant pressure to the workpiece and completely grinds the workpiece. Because the pressure applied to the workpiece by the grinding head depends on the displacement of the screw rod 13 and the elastic modulus of the elastic body, the flexible precise grinding operation platform can obtain the pressure applied to the workpiece by the grinding head by controlling and obtaining the rotation angle output outwards by the first servo motor 9, and a technician can conveniently analyze the grinding and polishing mechanism of the workpiece and the material thereof by combining the specific machining effect of the workpiece.
In addition, in the flexible precise grinding operation platform, the grinding head mechanism is small in size and small in inertia moment and can be in flexible contact with a workpiece; can follow the displacement volume of Z axle direction through lead screw 13 accurate control grinding head, and then the grinding pressure that accurate control grinding head applyed to the work piece realizes that the constant voltage floats, has effectively reduced the vibration of grinding process, ensures the machined surface quality of work piece and the life of grinding head.
The flexible precision grinding operation platform provided by the invention is further explained with reference to the attached drawings and the embodiment.
The flexible precision grinding operation platform adopted by the invention also comprises a Z-axis sliding table, and the Z-axis sliding table can be arranged on one side of the XY-axis sliding table; the grinding head mechanism adopted by the flexible precise grinding operation platform further comprises a connecting plate 7, a lead screw nut seat 14 and a first sleeve 10; the connecting plate 7 is fixed on a mounting seat of the Z-axis sliding table and used as a mounting base of other mechanisms in the grinding head mechanism.
Besides, the XY-axis sliding table can also comprise a P-axis sliding table which slides in the same direction as the Y-axis sliding table, besides the X-axis sliding table and the Y-axis sliding table which are horizontally distributed and are perpendicular to each other. No matter be above-mentioned X axle slip table, Y axle slip table, Z axle slip table, still P axle slip table, arbitrary slip table can carry out axial displacement alone, and every slip table is equipped with the spacing card of two directions and carries out spacing protection.
For the grinding head mechanism, the first servo motor 9 and the first sleeve 10 are both fixed on the connecting plate 7; the screw-nut base 14 is pivotally mounted to the connection plate 7 at a first position through the first sleeve 10, in other words, the first sleeve 10 restricts the freedom of movement of the screw-nut base 14 such that the screw-nut base 14 has only a rotational freedom, and the screw-nut base 14 has only a rotational freedom about the Z-axis in terms of the relationship of movement between the screw-nut base 14 and the screw 13.
In the grinding head mechanism, the first servo motor 9 drives the screw nut base 14 to rotate in a fixed axis manner, and the screw nut base 14 has no freedom of movement, so that the screw 13 matched with the screw nut base 14 moves in the Z-axis direction. Obviously, if the screw nut base 14 drives the screw 13 to move upward when the first servo motor 9 rotates forward, the screw nut base 14 drives the screw 13 to move downward when the first servo motor 9 rotates backward.
As for the way of the first servo motor 9 driving the lead screw nut seat 14 to rotate, a gear transmission mechanism or a belt wheel transmission mechanism is adopted and is not limited.
Illustratively, both the first servomotor 9 and the lead screw nut base 14 realize transmission using a pulley mechanism. In this example, a first pulley is provided on an output shaft of the first servomotor 9, a second pulley is coaxially fixed to the screw nut holder 14, and the first servomotor 9 drives the screw nut holder 14 to rotate in a fixed axis manner via the first pulley, the second pulley, and the timing belt 8 stretched between the two pulleys.
The second belt wheel can be coaxially fixed at the upper end of the screw nut seat 14, and a center hole through which the screw 13 can pass is formed in the center of the second belt wheel.
In order to achieve better technical effects, the grinding head mechanism further comprises a chute plate 11 and a blocking stick 12 which are arranged on one side of the screw rod 13. Wherein, a horizontally through chute is arranged in the chute plate 11 and extends along the Z-axis direction; one end of the blocking stick 12 is fixed on the screw rod 13, and the other end is embedded in the chute. When the first servo motor 9 drives the screw 13 to move up and down, the screw 13 and the blocking rod 12 are relatively fixed, and one end of the blocking rod 12 is embedded into the chute, so that the screw 13 can drive the blocking rod 12 to slide along the Z axis in the chute, and the chute restrains the degree of freedom of movement of the screw 13 along the XY axis direction by restraining the sliding direction of the blocking rod 12. In short, the chute plate 11 and the chute thereof can be used for restricting the rotation of the lead screw 13 and restricting the lead screw from moving in the X-axis and Y-axis directions, and play a role in centering the lead screw 13.
Wherein, the chute plate 11 can be fixedly installed through the connecting plate 7.
In the above embodiment, because the blocking stick 12 slides up and down along the chute, the operator can also obtain the displacement of the lead screw 13 along the Z axis by measuring the height of the blocking stick 12 in the chute, which is convenient for realizing feedback adjustment.
As for the grinding head used for the grinding head mechanism, it may be provided as the abrasive wheel 26. Further, the elastic body may specifically employ the first spring 15. Since the abrasive belt wheel 26 is required to perform a grinding operation in conjunction with the abrasive belt 6 in a rotated state, the grinding head mechanism further includes a drive assembly provided between the lower end of the first spring 15 and the abrasive belt wheel 26 for driving the abrasive belt wheel 26 to rotate.
The drive assembly may comprise a second servo motor 16, a drive wheel 17 and an abrasive belt 6; the drive wheel 17 is fixed to the output shaft of the second servomotor 16 and the sanding belt 6 is tensioned between the drive wheel 17 and a sanding wheel 26. When the second servo motor 16 rotates the driving wheel 17, the driving wheel 17 rotates the abrasive belt 6 and the abrasive belt wheel 26. The abrasive belt 6 is used for contacting and grinding a workpiece clamped on the XY axis sliding table.
The second servomotor 16 may be fixed relative to the connecting plate 7 or may move synchronously with the grinding head.
Illustratively, the drive assembly further includes a drive connection plate 19; the top end of the driving connecting plate 19 is fixedly connected to the first spring 15, the bottom end of the driving connecting plate 19 is connected with the abrasive belt wheel 26, and the abrasive belt wheel 26 is fixedly hinged to the driving connecting plate 19; the middle part of the driving connecting plate 19 is provided with a mounting groove for the output shaft of the second servo motor 16 to pass through, and the middle part of the driving connecting plate 19 is fixedly connected with the second servo motor 16.
In the above example, the bottom end of the first spring 15 can be fixedly connected with the driving connecting plate 19 through the spring retaining shaft 18, so as to prevent the first spring 15 from sliding left and right.
The drive assembly may also comprise a tensioning mechanism, which is arranged next to the sanding belt 6 for adjusting the tightness of the sanding belt 6.
For the above tensioning mechanism, a tensioning wheel 28, a central shaft 31 and a tensioning connecting rod 30 connected between the tensioning wheel 28 and the central shaft 31 may be included.
The central shaft 31 is pivoted by the connecting plate 7, i.e. the central shaft 31 always rotates in the same mounting hole in the connecting plate 7 with respect to the connecting plate 7.
The two ends of the tension connecting rod 30 are respectively connected to the central shaft 31 and the tension wheel 28, and the axial direction of the tension connecting rod 30 is opposite to the axial direction of the central shaft 31, so that when the central shaft 31 rotates, the tension connecting rod 30 is driven to rotate around the central shaft 31, and further the tension wheel 28 is driven to rotate around the central shaft 31.
On the basis, the tension wheel 28 can be hinged to the end of the tension connecting rod 30 through the tension wheel mounting seat 29, the periphery of the tension wheel 28 is attached to the inner ring of the abrasive belt 6, the tension wheel 28 swings by taking the tension connecting rod 30 as a swing arm when the central shaft 31 rotates, and the tightness of the abrasive belt 6 can be adjusted by pulling the abrasive belt 6 in the swinging process.
Further, the central shaft 31 may be pivotally mounted through a fixed sleeve and a deep groove ball bearing and a spacer thereof provided in the fixed sleeve. The fixing sleeve is fixed to the connecting plate 7, and the center shaft 31 is inserted into the fixing sleeve through the deep groove ball bearing and the spacer thereof and rotatably connected to the inside of the fixing sleeve. The central shaft 31 can be connected with a torsion spring and an adjusting shaft 32 for driving the central shaft 31 to rotate, and further driving the tension wheel 28 to swing.
In order to achieve better technical effects, in the above embodiment, the center planes of the abrasive belt wheel 26, the driving wheel 17 and the tension wheel 28 are all located in the same vertical plane, which plays a role in preventing the abrasive belt 6 from deviating.
In addition to employing the abrasive wheel 26 as the grinding head of the present invention, the grinding head may be provided as a single abrasive grain assembly. Compared with the abrasive belt wheel 26, the abrasive particle tip of the single abrasive particle component faces downwards, when the first servo motor 9 drives the screw 13 and the first spring 15 which is an elastic body to move up and down, the single abrasive particle component downwards presses the surface of the workpiece under the action of the first spring 15, and the scribing and grinding of the abrasive particle tip on the surface of the workpiece are realized in combination with the movement of the workpiece along with the XY-axis sliding table, so that no additional driving component is needed to be arranged for the single abrasive particle component.
Whether a grinding head using the abrasive wheel 26 or a grinding head using a single abrasive grain assembly, the grinding head mechanism may be provided with the drive connection plate 19, the second sleeve 21, the second spring 22, and the grinding head connection plate 24 between the lower end of the first spring 15 and the abrasive wheel 26.
Wherein, the second spring 22 is arranged in the second sleeve 21 and is coaxial with the first spring 15; the grinding head is positioned at the grinding head connecting plate 24; the top end of the second spring 22 is connected to the driving connecting plate 19, and the bottom end of the second spring 22 can be connected to the grinding head connecting plate 24 through a supporting shaft 25 penetrating the second sleeve 21. Therefore, for the grinding head mechanism, the first servo motor 9 drives the screw 13 to move up and down, and when the screw 13 moves down, the screw 13 presses down the first spring 15, the driving connecting plate 19, the second spring 22 and the grinding head connecting plate 24, so that the grinding head presses down the surface of the workpiece. The second spring 22 may also be provided with anchor ears 20 at both ends.
When the grinding head is provided with the abrasive belt wheel 26, the grinding head connecting plate 24 can be connected with the supporting fork 25 through the adjusting bolt 27, and the abrasive belt wheel 26 is hinged on the supporting fork 25 through the fixed shaft. Thus, with the foregoing structure, the mounting height of support fork 25 can be adjusted by adjusting the position of adjusting bolt 27, thereby serving to pretension-mount abrasive belt 6.
According to the flexible precise grinding operation platform, the first servo motor 9 drives the lead screw 13, the first spring 15 and the second spring 22 to generate adjustable contact pressure to a workpiece, meanwhile, floating of a grinding head in a machining process is achieved, the flexible precise grinding operation platform can be used for finishing flexible scribing and grinding of various aerospace difficult-to-machine materials such as single crystal high-temperature alloy, titanium alloy, reaction sintering silicon carbide and the like, so that a precise removal mechanism of the materials in a flexible contact state can be researched, and the defect that related researches are difficult to directly and efficiently finish by an existing rigid scribing platform and numerical control equipment is overcome.
When the flexible precise grinding operation platform is used, if the contact pressure of the abrasive belt wheel 26 and the abrasive belt 6 on the workpiece needs to be increased, the first servo motor 9 is started in the forward direction, the first servo motor 9 rotates forwards for a certain angle, the driving screw 13 is driven to downwards generate a precise linear displacement corresponding to the angle, the first spring 15 and the second spring 22 are connected in series, the first spring 15 and the second spring can be coupled into a determined elastic modulus, and the determined pressure is applied to the workpiece by combining the linear displacement. Conversely, if the contact pressure of the abrasive belt wheel 26 and the abrasive belt 6 thereof on the workpiece needs to be reduced, the second servo motor 16 is reversely started. Since the movement of both the drive wheel 17 and the abrasive belt wheel 26 in the Z-axis direction is uniform, the tension of the abrasive belt 6 fitted over both the drive wheel 17 and the abrasive belt wheel 26 can be maintained constant.
Furthermore, if a single particle scribing experiment is to be performed, the support fork 25, the abrasive belt wheel 26 and the abrasive belt 6 can be removed and the single abrasive particle assembly replaced.
The flexible precision grinding operation platform provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A flexible precise grinding operation platform is characterized by comprising an XY-axis sliding table for clamping a workpiece and a grinding head mechanism which is positioned above the XY-axis sliding table and moves along the Z-axis direction; the grinding head mechanism comprises a first servo motor (9), a lead screw (13), an elastic body stretching along the Z-axis direction and a grinding head arranged at the bottom of the elastic body; the first servo motor (9) drives the lead screw (13) to move up and down; the bottom end of the lead screw (13) abuts against the upper end of the elastic body.
2. The flexible precision grinding operation platform of claim 1 further comprising a Z-axis slide; the grinding head mechanism further comprises a connecting plate (7), a screw nut seat (14) and a first sleeve (10); the connecting plate (7) is fixed on a mounting seat of the Z-axis sliding table; the first servo motor (9) and the first sleeve (10) are fixed on the connecting plate (7); the screw rod nut seat (14) is pivotally arranged at a first position of the connecting plate (7) through the first sleeve (10); the first servo motor (9) drives the lead screw nut seat (14) to rotate in a fixed shaft mode.
3. The flexible precision grinding operation platform according to claim 2, characterized in that the first servo motor (9) drives the lead screw nut holder (14) in rotation by a synchronous belt mechanism.
4. The flexible precision grinding operation platform according to claim 3, wherein the wheel head mechanism further comprises a chute plate (11) and a blocking stick (12); the sliding chute plate (11) is provided with a sliding chute which is horizontally arranged in a through manner; one end of the blocking stick (12) is fixedly connected with the lead screw (13), and the other end of the blocking stick is embedded into the sliding groove to realize vertical sliding.
5. The flexible precision grinding operation platform according to claim 1, characterized in that the grinding head is embodied as an abrasive wheel (26); the elastic body comprises a first spring (15); the grinding head mechanism further comprises a driving assembly arranged between the first spring (15) and the abrasive wheel (26).
6. The flexible precision grinding operation platform according to claim 5, characterized in that the drive assembly comprises a second servo motor (16), a drive wheel (17) and a sanding belt (6); the driving wheel (17) is fixed on an output shaft of the second servo motor (16), and the abrasive belt (6) is tensioned between the driving wheel (17) and the abrasive belt wheel (26).
7. The flexible precision grinding operation platform according to claim 6, wherein the wheel head mechanism further comprises a drive connection plate (19);
the top end of the driving connecting plate (19) is fixedly connected to the first spring (15);
the middle part of the driving connecting plate (19) is fixedly connected with the second servo motor (16);
the bottom end of the driving connecting plate (19) is fixedly hinged with the abrasive belt wheel (26).
8. The flexible precision grinding operation platform according to claim 7, further comprising a tensioning mechanism disposed proximate to the abrasive belt (6) to adjust the tension of the abrasive belt (6); the tensioning mechanism comprises a tensioning wheel (28), a central shaft (31) and a tensioning connecting rod (30) connected between the tensioning wheel (28) and the central shaft (31); the periphery of the tension wheel (28) is attached to the inner ring of the abrasive belt (6); when the central shaft (31) rotates, the tensioning connecting rod (30) is driven to swing in the plane of the abrasive belt (6).
9. The flexible precision grinding operation platform according to claim 1, wherein the grinding head is embodied as a single abrasive grain assembly; the elastic body comprises a first spring (15); the abrasive tips of the single abrasive particle assembly face downward.
10. The flexible precision grinding operation platform according to any one of claims 5 to 9, characterized in that a drive connecting plate (19), a second sleeve (21), a second spring (22) and a grinding head connecting plate (24) are further provided between the lower end of the first spring (15) and the grinding head;
the second spring (22) is arranged in the second sleeve (21) and is coaxial with the first spring (15); the grinding head is positioned on the grinding head connecting plate (24); the top end of the second spring (22) is connected to the driving connecting plate (19), and the bottom end of the second spring (22) is connected to the grinding head connecting plate (24).
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