CN115502824A

CN115502824A - Adjustable lifting assembly, grinding machine, control method and system, equipment and medium

Info

Publication number: CN115502824A
Application number: CN202210964378.8A
Authority: CN
Inventors: 徐德军; 马飞
Original assignee: Qingdao Gaoce Technology Co Ltd
Current assignee: Qingdao Gaoce Technology Co Ltd
Priority date: 2022-08-11
Filing date: 2022-08-11
Publication date: 2022-12-23

Abstract

The invention relates to the technical field of grinding machines, and particularly provides an adjustable lifting assembly, a grinding machine, an adjustable lifting control method and system of the grinding machine, computer equipment and a computer-readable storage medium assembly, wherein the control method comprises the following steps: judging whether the state of the workpiece to be machined meets the condition for grinding the workpiece by the grinding assembly or not according to the detection result of the detection assembly; if not, selectively placing the workpiece to be machined on the feeding device, and: the first driving part is operated, and the plurality of lifting wheels are driven to rotate by the first driving part so as to lift the supporting plate and the workpiece to be machined arranged on the supporting plate; operating the adjusting part such that the elevation heights of the pallet are different corresponding to the positions of the plurality of elevating wheels. According to the invention, the workpiece to be machined meets the grinding condition in a mode of directly placing the workpiece to be machined in the feeding device again and repeatedly adjusting the feeding device.

Description

Adjustable lifting assembly, grinding machine, control method and system, equipment and medium

Technical Field

The invention relates to the technical field of grinding machines, and particularly provides an adjustable lifting assembly, a grinding machine, an adjustable lifting control method of the grinding machine, an adjustable lifting control system of the grinding machine, computer equipment and a computer readable storage medium.

Background

The grinding machine is equipment for grinding hard and brittle materials. Such as grinding machines, typically include a loading assembly, a feeding assembly, and a grinding assembly. Taking a piece made of hard and brittle materials as a silicon rod as an example, firstly fixing the cut silicon rod to a feeding assembly, performing certain initial adjustment on the position and posture of the feeding assembly, and then conveying the silicon rod to a position between two chucks of the feeding assembly, wherein for example, the two chucks can be both movable chucks or one chuck is a movable chuck and the other chuck is a fixed chuck. And the silicon rod is conveyed to the grinding component through the axial movement of the silicon rod, so that the first group of surfaces to be ground is subjected to grinding processing including rough grinding and fine grinding. Thereafter, the silicon rod is rotated to a second group of surfaces to be ground by rotating the silicon rod, and the second group of surfaces to be ground is subjected to grinding including rough grinding and finish grinding. And repeating the steps until all surfaces to be ground of the silicon rod are ground according to the set grinding standard.

Taking the hard and brittle material as an example of the silicon rod, since the specifications of the silicon rods are different and the external dimensions of the silicon rods of the same specification are different, when the silicon rods are placed on the loading platform, a certain position deviation usually exists between the axis of the silicon rod and the axes of the two chucks. In addition, because the surface of the silicon rod before grinding is uneven, a certain angle deviation exists between the axis of the silicon rod and the axes of the two chucks. Obviously, the existence of the position deviation and the angle deviation can affect the coaxiality of the two axes, and the coaxiality between the two axes is shown as the feeding precision of the silicon rod on the grinding machine. The unqualified position deviation and angle deviation will affect the feeding precision of the silicon rod, and the reduction of the feeding precision is usually represented by the increase of the silicon rod grinding amount and the improvement of silicon loss in different degrees, so that the processing efficiency of the grinding machine is reduced, and the surface quality of the silicon rod is reduced.

Disclosure of Invention

The present invention is directed to solve at least some of the above problems, and more particularly, to improve the feeding accuracy of a silicon rod by suppressing or eliminating any one of the positional deviation and the angular deviation, thereby improving the machining efficiency of a grinding machine and the surface quality of the silicon rod. More specifically, the present invention mainly performs locally different height adjustment in the height direction in the positional deviation.

In a first aspect, the present invention provides an adjustable lift assembly comprising: a first drive member; the lifting wheel set comprises a plurality of lifting wheels, and the first driving part is in driving connection with the lifting wheels; the lifting wheel is operatively connected with the supporting plate; the first driving part can drive at least one part of the plurality of lifting wheels to rotate so as to lift the supporting plate and the workpiece to be machined arranged on the supporting plate; the lift assembly further comprises: an adjustment portion in signal connection with at least the lifting wheel so as to: the lifting heights of the supporting plate corresponding to the positions of the plurality of lifting wheels are different.

By this construction, one possible form of construction of the lift assembly is given. For example, the workpiece to be processed is a silicon rod to be ground.

Compared with the mode of carrying out manual participation after the workpiece to be processed is directly blanked (bar withdrawing), the workpiece to be processed is directly placed in the feeding device for readjustment, so that the adjustment efficiency is improved. Compared with the mode of adjusting through a (fixed or movable) chuck in the feeding direction, the feeding device has the advantages that due to the fact that the number of parts involved in the structure of the feeding device is relatively large, feeding precision adjustment in four dimensions can be achieved through different parts. In addition, because the feeding device and the (fixed and movable) chuck are structurally separated, the adjustment of corresponding dimensions is easier to realize by means of adding parts and the like.

It should be noted that the operative connection in "the first drive member is in driving connection with the elevator wheel" is to be understood as: when the first driving component drives, the lifting wheel can concomitantly generate actions related to the driving action, namely the lifting wheel can generate actions such as lifting and the like in response to the driving of the first driving component. For example, the first driving part and the lifting wheel can be in direct driving connection or indirect driving connection.

It should be noted that the operative connection in the "operative connection of the lifting wheel to the pallet" is understood to mean: when one of the lifting wheels and the supporting plate acts, the other one concomitantly acts in association with the action, namely, the two have an association at the operation level, for example, the two can be in direct association or indirect association.

It should be noted that the signal connection in "the adjustment portion, which is at least in signal connection with the lifting wheel" should be understood as: according to different control instructions of the adjusting part, the lifting wheel can generate a lifting height corresponding to the instructions. It is obvious that a person skilled in the art can make a mapping relationship between the control command and the lifting height according to actual requirements. Alternatively, based on such signal connection, the mapping relationship between the control command and the lifting height can be flexibly selected according to actual requirements, the map can be known, conventionally selected or flexibly made according to actual situations, and the like.

It is understood that the structural form, the number, the relative position between each lifting wheel (in the case that the lifting wheels include a plurality of lifting wheels) and the relative position between the lifting wheels and the supporting plate can be determined by those skilled in the art according to actual needs. Such as may be: the lifting wheels comprise two groups, and the two groups of lifting wheels are arranged at positions close to two ends of the silicon rod; the silicon rod lifting device comprises four lifting wheels, wherein the four lifting wheels are respectively marked as A, B, C and D, A and C are a group, the silicon rod arranged on a supporting plate can realize the lifting in the first form by means of the lifting wheels (A and C), B and D are a group, and the silicon rod arranged on the supporting plate can realize the lifting in the second form by means of the lifting wheels (B and D); and so on.

It can be understood that, a person skilled in the art can determine the specific form of the displacement of the lifting wheel set driven by the first driving component and the corresponding relationship between the driving component and the lifting wheel set according to actual needs. For example, the first driving component can directly drive or indirectly drive the lifting wheel set to displace. The form of indirect drive may be: the power output end of the first driving component is directly connected with one or more intermediate components, and when the state of the intermediate components driven by the first driving component is changed, the lifting wheel can generate displacement along the height direction based on the state change. And the corresponding relationship between the first driving component and the lifting wheel group can be one-to-one, one first driving component corresponds to a plurality of lifting wheels, one lifting wheel corresponds to a plurality of first driving components, and the like. Illustratively, the lifting wheels comprise two, and the two first driving parts respectively drive the two lifting wheels in a relatively independent manner.

It is understood that the direction of the displacement of the lifting wheel driven by the first driving member and the displacement amount can be determined by those skilled in the art according to actual needs. For example, the displacement may be in a direction including only the height direction, or may be in other directions including but not limited to the horizontal direction. For the displacement amount, a person skilled in the art can set how the driving component can cause the lifting wheel to generate the expected displacement amount according to a driving mode of the lifting wheel driven by the first driving component to generate the displacement, a displacement amount required by the workpiece to be processed, and the like.

It can be understood that a person skilled in the art can determine the specific structural form of the supporting plate according to actual requirements, such as directly arranging the supporting plate or adding a corresponding functional structure on the supporting plate and then arranging the workpiece to be processed on the functional structure.

With regard to the above-mentioned adjustable lifting assembly, in a possible embodiment, the lifting assembly further comprises a restricting component, and the supporting plate is displaced along the height direction under the cooperation of the restricting component, and thus lifts the supporting plate and the workpiece to be processed arranged on the supporting plate.

Through the structure, the supporting plate can be lifted in the set vertical direction under the limiting and/or guiding action of the limiting component, and the lifting reliability is ensured.

It is understood that the structural form, the number of the guide and limit stop members, the relationship between the guide and limit stop members and the supporting plate, etc. can be determined by those skilled in the art according to actual requirements. Such as may be: the guide limiting component comprises a vertical baffle or a vertical baffle rib or a guide rail matched with the outer edge of the supporting plate and the like, wherein the supporting plate is surrounded/partially surrounded.

With regard to the above-mentioned adjustable lifting assembly, in a possible embodiment, at least a part of the plurality of lifting wheels is fixedly connected to the pallet in a rotatable manner, the lifting assembly further comprising a transmission member connected on the one hand to the first drive member and on the other hand interfacing with the lifting wheels, wherein the transmission member has an inclined guide surface in a position close to the lifting wheels such that: when the first driving component drives the transmission component to move transversely, the lifting wheel rotates along the guide surface, and therefore the supporting plate and the workpiece to be machined arranged on the supporting plate are lifted.

With such a construction, a possible realisation is given of the first driving member driving the lifting wheel to displace.

It should be noted that the rotation of the "at least a part of the lifting wheel is fixedly connected to the supporting plate in a rotatable manner" is understood to be the rotating property of the lifting wheel, and the fixed connection is understood to be the connection relationship between the lifting wheel and the supporting plate. Illustratively, the lifting wheel is provided with a shaft, the shaft is fixedly connected to the supporting plate, and the lifting wheel can rotate around the shaft. Illustratively, the pallet is generally a housing structure, the workpiece to be processed is fixed to the top of the housing structure, and the lift wheels are mounted on the sides of the housing structure via axles.

It is understood that the structural form, the number of the transmission components and the specific motion form generated by the driving component according to the actual requirement can be determined by those skilled in the art. For example, the transmission component may be a plate-shaped structure, a block-shaped structure, a strip-shaped structure, etc., and the movable form of the transmission component may include moving, rotating, a combination of the two, etc. For example, the lifting wheels may share one transmission member, each lifting wheel may be provided with a plurality of transmission members, and the lifting wheels may correspond to the transmission members one to one.

A guide surface as inclined is to be understood here as: the height of the downstream side of the guide surface should be lower than the height of the upstream side of the guide surface as viewed in the traversing direction of the transmission member. The guide surface having such a characteristic may be a slant surface, a (concave, convex) curved surface, a combination thereof, or the like. Use the guide face as the inclined plane as an example, along with stretching out of the power take off end of power cylinder, the sideslip takes place for drive unit, because the setting on inclined plane, the lifting wheel will be along with rotation and the vertical ascending displacement of roll production on the inclined plane thereof, so, alright drive the layer board and produce the displacement along vertical direction to the lifting of treating the machined part has been realized. Obviously, the length of the inclined plane along the axial direction of the power output end, the slope of the inclined plane and the like can be flexibly determined by a person skilled in the art according to the actual requirements.

With regard to the above-mentioned adjustable lifting assembly, in a possible embodiment, the lifting wheels are rotatably disposed on wheel shafts, at least a portion of the wheel shafts of the plurality of lifting wheels is an eccentric shaft, the eccentric shaft is configured with a second driving component, the adjusting portion includes a controller, the second driving component and the eccentric shaft, the eccentric shaft is mechanically connected with the corresponding lifting wheel to enable the lifting wheels to rotate under the driving of the transmission component, and the controller is in signal connection with the second driving component to enable: the second driving part operates according to the instruction of the controller and thus causes the eccentric shaft to rotate.

With this configuration, a specific configuration of the adjustment portion is given.

Particularly, through the resultant motion formed by the rotation of the lifting wheels around the eccentric wheel and the rotation of the eccentric wheel, under the action of the transmission component, the lifting heights among the lifting wheels are different, so that the different lifting heights of the part to be machined are different.

It will be understood that a person skilled in the art can determine the specific specification of the eccentric shafts and the specific number and positions of the eccentric shafts configured in the lifting wheel according to actual requirements, and the like, and the lifting wheel exemplarily includes two lifting wheels, one of which is a common shaft and the other is an eccentric shaft.

It should be noted that "the second driving component selectively rotates according to the instruction of the controller, and drives the eccentric shaft to rotate under the condition that the eccentric shaft rotates" includes two conditions (taking the lifting wheel including two as an example): one is that: the lifting height difference (less) between the two lifting wheels can be realized only by the rotation of the lifting wheels around the eccentric shaft without the rotation of the eccentric shaft; the other is as follows: the lifting height difference between the two lifting wheels can be realized only by combining the rotation of the eccentric shaft and the rotation of the lifting wheels around the eccentric shaft.

In one possible embodiment for the adjustable lift assembly described above, the first drive member is a power cylinder or an electric motor.

By means of such a construction, a possible design of the first drive member is given,

for example, the power cylinder can be an electric cylinder, an air cylinder, a hydraulic cylinder and the like. At this time, the transmission member may be directly connected to the power output end (piston).

In the case where the first driving member is a motor, for example, a shaft of the motor should be indirectly connected to the transmission member through a transmission mechanism such as a lead screw nut pair to effect lateral movement of the transmission member.

With regard to the above adjustable lifting assembly, in one possible embodiment, the lifting assembly further comprises a base plate, a chamber is formed between the base plate and the pallet, the lifting wheels and the transmission member are accommodated in the chamber and/or the first driving member is disposed on a side of the base plate away from the chamber.

By this construction, a particular form of construction is given in which the transmission member and the first drive member form a lift assembly.

With respect to the adjustable lift assembly described above, in one possible embodiment, the lift assembly further comprises a base plate defining a chamber between the base plate and the platform, the restraint member being secured to the base plate.

By securing the restraining members to the base plate, the integrity of the lift assembly or the compactness of the lift assembly between the various components is ensured.

With respect to the above adjustable lift assembly, in one possible embodiment, the lift assembly further comprises a return spring disposed between the base plate and the platform.

By this construction, a specific form of construction of the lift assembly is given.

Particularly, through the setting of reset spring, guaranteed the reliable return of layer board. If the power output end of the power cylinder extends out and the supporting plate is lifted, the return spring is in a stretched state. When the power output end of the power cylinder retracts, the supporting plate descends under the combined action of the pulling force of the return spring and the self gravity of the supporting plate, and therefore the supporting plate returns.

It is understood that, those skilled in the art can determine the specifications (such as elastic modulus, etc.) of the return spring, the number of the settings, the setting position and the specific connection mode with the bottom plate and the supporting plate, etc. according to actual requirements. Illustratively, the return spring includes a plurality of springs distributed around the circumference of the connecting shaft. In addition, a return spring can also be sleeved outside the connecting shaft.

In a possible embodiment, the restraining element is a connecting shaft, and the support plate has a hole, and the connecting shaft is freely received in the hole.

By such a construction, a specific manner of connection of the restricting member is given.

Particularly, the movement of the supporting plate relative to the bottom plate along other directions in the horizontal plane is limited through the arrangement of the connecting shaft, and the lifting reliability is guaranteed. The integrity of the lift assembly, such as the bottom end of the connecting shaft, may then be fixedly secured to the base plate.

It can be understood that, a person skilled in the art can determine the number of the connecting shafts and the specific connecting mode between the connecting shafts and the bottom plate according to actual requirements. Illustratively, the connecting shaft comprises one, preferably disposed at a position in the middle of the support plate of the lift assembly.

In a possible embodiment, the position of the supporting plate near the middle of one side of the workpiece to be processed is a structure which is concave towards the direction far away from the workpiece to be processed.

With this configuration, the workpiece can be more reliably set on the pallet.

For the above adjustable lifting assembly, in a possible implementation manner, the supporting plate includes a supporting plate main body and a supporting plate, the lifting wheel is disposed on the supporting plate main body, and the workpiece to be machined is disposed on the supporting plate, wherein the supporting plate is recessed in a direction away from the workpiece to be machined at a position close to a middle portion of one side of the supporting plate close to the workpiece to be machined.

With this construction, a specific design of the pallet is given.

With regard to the above adjustable lifting assembly, in a possible embodiment, viewed along the length direction of the workpiece to be processed, the support plates include two groups which are separately arranged, each group of the support plates includes at least one support plate, and a structure which is concave towards the direction away from the workpiece to be processed is formed between the two groups of the support plates; or the supporting plate is of an integrally formed structure, and a structure which is sunken towards the direction far away from the workpiece to be machined is formed at the position, close to the middle part, of the supporting plate.

By such a construction, a possible way of forming the recesses in the carrier is given.

In a possible embodiment of the above adjustable lifting assembly, the lifting wheels are cams, each cam is in driving connection with the corresponding first driving part or in driving connection with the corresponding transmission mechanism, and accordingly, the adjusting part comprises a controller in signal connection with the first driving parts so that at least a part of the plurality of cams lifts the pallet and the workpiece to be processed arranged on the pallet has a different height from the other cams.

By means of such a configuration, an alternative design of the lifting wheel and the corresponding way of lifting the workpiece to be machined is provided. Such as a cam, disposed below the pallet and contacting the bottom surface of the pallet.

If the first driving part matched with the cam is a motor, the power output end of the motor can be in driving connection with the cam through a transmission mechanism in a belt transmission mode, a chain transmission mode or a gear transmission mode and the like.

In a second aspect, the invention provides a grinding machine comprising an adjustable lift assembly as described in any one of the preceding claims.

It will be appreciated that the grinding machine has all the technical effects of any one of the adjustable lifting assemblies described above and will not be described in detail here.

With respect to the grinding machine described above, in one possible embodiment, the grinding machine includes a loading device that includes the adjustable lifting assembly.

By such a construction, a possible association between the adjustable lifting assembly and the grinding machine is given.

For the grinding machine, in a possible embodiment, the feeding device comprises a feeding platform, and the adjustable lifting assembly is arranged on the feeding platform.

By this construction, a particular arrangement of the lifting assembly on the mill is given.

In a possible embodiment, the workpiece to be machined is a silicon rod.

By such a constitution, a specific form of the member to be worked is given.

In a third aspect, the present invention provides an adjustable lifting control method for a grinding machine, where the grinding machine includes a feeding device and a grinding device, the feeding device includes a lifting assembly, the grinding device includes a grinding assembly and a detection assembly, the lifting assembly includes a first driving component, a lifting wheel set, a supporting plate and an adjusting portion, the lifting wheel set includes multiple lifting wheels, and the control method includes: judging whether the state of the workpiece to be machined meets the condition for grinding the workpiece by the grinding assembly according to the detection result of the detection assembly; if not, returning the workpiece to be processed to the feeding device, and: the first driving part is operated, and the plurality of lifting wheels are driven to rotate by the first driving part so as to lift the supporting plate and the workpiece to be machined arranged on the supporting plate; operating the adjusting part such that the elevation heights of the pallet are different corresponding to the positions of the plurality of elevating wheels.

With such a configuration, it is possible to seek to obtain a state in accordance with a grinding condition of the workpiece to be machined, such as a silicon rod or the like, by adjusting the dimension of the position state of different local portions of the workpiece to be machined in the vertical direction at the feeding link (hereinafter, angle adjustment along the X axis).

It will be appreciated that the base unit may adopt all possible connection means provided that it has the base unit described above and that it is ensured that the control method is implemented. In other words, this solution obviously has all the technical effects of any one of the adjustable lifting assemblies described in the foregoing, and will not be described herein again.

Compared with the mode of carrying out manual participation after the workpiece to be processed is directly discharged (rod withdrawing), the invention directly places the workpiece to be processed in the feeding device for re (repeated) adjustment, thereby improving the adjustment efficiency on the premise of ensuring the precision. Compared with the adjustment in the feeding direction by the (fixed and movable) clamping heads, the feeding precision adjustment in four dimensions can be realized by different components due to the relatively large number of components involved in the structure of the feeding device. In addition, because the feeding device and the (fixed and movable) chuck are structurally separated, the adjustment of corresponding dimensions is easier to realize by means of adding parts and the like.

It should be noted that "selectively placing the workpiece to be processed on the feeding device" should be understood as follows: the condition that the state of the workpiece to be machined does not satisfy the condition that the grinding assembly grinds the workpiece may include that a rod needs to be directly withdrawn, that readjustment is needed but the feeding device cannot achieve such adjustment, that readjustment is needed and that adjustment can be achieved by the feeding device (only by the feeding device or cooperation of the feeding device with other devices, etc.), and the like. Therefore, it is an effective control to place the member to be worked on the loading device only in a case where "readjustment is required and adjustment can be achieved by the loading device".

With regard to the above control method, in a possible embodiment, the lifting assembly further comprises a constraining member, and the supporting plate is displaced in the height direction by the cooperation of the constraining member, and thus lifts the supporting plate and the workpiece to be processed arranged on the supporting plate.

With this configuration, the pallet can be lifted in a predetermined vertical direction by the restraining member, for example, by the restraining and/or guiding function.

With regard to the above control method, in a possible embodiment, at least a portion of the plurality of lifting wheels is fixedly connected to the pallet in a rotatable manner, the lifting assembly further includes a transmission member having an inclined guide surface at a position close to the lifting wheels, and accordingly, the "driving the plurality of lifting wheels to rotate by the first driving member so as to lift the pallet and the workpiece to be processed disposed on the pallet" includes: when the first driving component drives the transmission component to transversely move, the lifting wheels rotate along the guide surface and accordingly lift the supporting plate and the workpiece to be machined arranged on the supporting plate.

By such a construction, a possible realisation of the driving member driving the lifting wheel to displace is given.

With regard to the above control method, in one possible embodiment, the lifting wheels are rotatably provided to wheel shafts, at least a part of the wheel shafts of the plurality of lifting wheels is an eccentric shaft provided with a second driving means, and the adjusting section includes a controller, the second driving means, and the eccentric shaft, and accordingly, "operating the adjusting section so that the lifting heights of the pallet corresponding to the positions of the plurality of lifting wheels are different" includes: a controller operates the second drive component to: the eccentric shaft is driven to rotate by the second driving component, so that the lifting heights of the supporting plate corresponding to the positions of the lifting wheels are different.

With this configuration, a specific configuration of the adjustment unit and a corresponding control method are provided.

With regard to the above control method, in one possible embodiment, the lifting wheel is a cam, the adjusting portion includes a controller, and accordingly, the "operating the adjusting portion so that the lifting heights of the pallet are different corresponding to the positions of the plurality of lifting wheels" includes: the height of at least a part of the plurality of cams for lifting the pallet and the workpiece to be processed disposed on the pallet is made different from the other cams, and thus the lifting height of the pallet corresponding to the positions of the plurality of lifting wheels is made different.

With this configuration, an alternative design of the lifting wheel and a corresponding control method are provided. Such as a cam, disposed below the pallet and contacting the bottom surface of the pallet.

In a fourth aspect, the present invention provides a computer readable storage medium comprising a memory adapted to store a plurality of program codes, the program codes adapted to be loaded and executed by a processor to perform a method of adjustable lift control for a grinding machine as described in any one of the preceding claims.

It can be understood that the computer readable storage medium has all the technical effects of the adjustable lifting control method of the grinding machine described in any one of the foregoing, and the details are not described herein.

It will be understood by those skilled in the art that all or part of the processes of the present invention for implementing the method for controlling the lifting of the grinding machine may be implemented by using a computer program to instruct related hardware, where the computer program may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of the above-mentioned method embodiments. Wherein the computer program includes computer program code, it is understood that the program code includes, but is not limited to, program code for performing the above-described method of grinder lift control. For convenience of explanation, only portions relevant to the present invention are shown. The computer program code may be in the form of source code, object code, an executable file or some intermediate form, and the like. The computer-readable storage medium may include: any entity or device capable of carrying said computer program code, media, usb disk, removable hard disk, magnetic diskette, optical disk, computer memory, read-only memory, random access memory, electrical carrier wave signals, telecommunication signals, software distribution media, etc. It should be noted that the computer readable storage medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable storage media that does not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.

In a fifth aspect, the present invention provides a computer apparatus comprising a memory and a processor, the memory being adapted to store a plurality of program codes, the program codes being adapted to be loaded and run by the processor to perform the adjustable lift control method of a grinding machine as claimed in any one of the preceding claims.

It will be appreciated that the apparatus has all the technical effects of the adjustable lift control method for a grinding machine as described in any one of the preceding claims, and will not be described in detail herein. The device may be a computer controlled device formed of various electronic devices.

In a sixth aspect, the present invention provides a lift control system for a grinding machine, the control system comprising a control module configured to be able to perform the adjustable lift control method of a grinding machine of any preceding claim.

It is understood that the computer readable storage medium has all the technical effects of any one of the above-mentioned adjustable lifting control methods of the grinding machine, and the detailed description thereof is omitted here.

In the description of the present invention, a "control module" may include hardware, software, or a combination of both. A module may comprise hardware circuitry, various suitable sensors, communication ports, memory, may comprise software components such as program code, or may be a combination of software and hardware. The processor may be a central processing unit, microprocessor, image processor, digital signal processor, or any other suitable processor. The processor has data and/or signal processing functionality. The processor may be implemented in software, hardware, or a combination thereof. Non-transitory computer-readable storage media include any suitable medium that can store program code, such as magnetic disks, hard disks, optical disks, flash memory, read-only memory, random-access memory, and so forth.

Further, it should be understood that, since the control module is set only for illustrating the functional units in the system corresponding to the lifting control method of the grinding machine of the present invention, the physical device corresponding to the control module may be the processor itself, or a part of software, a part of hardware, or a part of a combination of software and hardware in the processor. Thus, the number of control modules is only exemplary. Those skilled in the art will appreciate that the control module may be adaptively split according to actual situations. The specific splitting of the control module does not cause the technical solution to deviate from the principle of the present invention, and therefore, the technical solution after splitting will fall into the protection scope of the present invention.

Drawings

Preferred embodiments of the invention are described below for silicon rods to be ground (hereinafter simply referred to as silicon rods) and with reference to the drawing, in which:

FIG. 1 shows a schematic diagram of the structure of a grinding machine in accordance with one embodiment of the invention;

FIG. 2 is a first schematic diagram of a loading device of a grinding machine according to one embodiment of the invention, showing a centering assembly;

fig. 3 shows a second schematic structural view of a feeding device of the grinding machine according to an embodiment of the invention, and the centering assembly is not shown in the second schematic structural view;

FIG. 4 shows a schematic cross-sectional view of a lift assembly in a loading device of a grinding machine in accordance with one embodiment of the present invention;

FIG. 5 is a first schematic sectional view of a lifting assembly in a loading device of a grinding machine according to one embodiment of the invention, wherein the internal structure of the lifting assembly is shown;

FIG. 6 is a second cross-sectional view of the lifting assembly of the loading device of the grinding machine in accordance with one embodiment of the present invention, showing details of the mounting of the eccentric shaft;

FIG. 7 shows a schematic diagram of the eccentric shaft of the lift assembly of the grinding machine in accordance with one embodiment of the present invention;

fig. 8 shows a schematic structural diagram of a movable end clamping assembly in the clamping assembly of the feeding device of the grinding machine according to an embodiment of the invention;

fig. 9 is a schematic structural diagram illustrating a clamping fixed end assembly in a clamping assembly of a loading device of a grinding machine according to an embodiment of the invention;

fig. 10 shows a cross-sectional (partial) view of a clamping fixed end assembly in a clamping assembly of a loading device of a grinding machine in accordance with an embodiment of the present invention;

FIG. 11 is a schematic diagram of the structure of the loading table assembly in the loading device of the grinding machine according to one embodiment of the invention;

FIG. 12 illustrates a schematic structural view of a centering assembly of the grinding machine in accordance with one embodiment of the present invention;

fig. 13 is a schematic structural view showing a feed slide apparatus of a grinding machine according to an embodiment of the present invention;

fig. 14 is a schematic view showing a rough grinding wheel in the grinding apparatus of the grinding machine according to one embodiment of the invention;

fig. 15 is a schematic view showing the structure of a detecting unit in the grinding apparatus of the grinding machine according to the embodiment of the invention;

fig. 16 is a schematic view showing a detection state of a detection unit in the grinding apparatus of the grinding machine according to one embodiment of the invention; and

fig. 17 shows a flow chart of an adjustable control method of a grinding machine according to an embodiment of the invention.

List of reference numerals:

grinding machine 1, base 101, upright frame 102, loading device 11, loading assembly 111, lifting assembly 1111, first bottom plate 11111, electric cylinder 11112, transmission plate 11113, inclined surface 111131, first lifting wheel 111141, second lifting wheel 111142, closing plate 111143, supporting plate 11115, supporting plate body 111151, supporting plate 111152, connecting block 11116, connecting shaft 1117, knuckle bearing 11171, return spring 1118, first axle 111191, first adjusting motor 1111911, second axle 111192, closing plate 1921, clamping assembly 1112, clamping movable end assembly 11121, first air cylinder 111211, X-axis guide rail 111212, Y-axis guide rail 111213, movable end return spring 111214, movable clamping plate 111215, clamping fixed end assembly 11122, fixed clamping plate 111221, second bottom plate 1112221, adjusting plate 1112222, positioning block 2221113, screw 11131, second adjusting motor 1112224, adjusting top block 2225, adjusting wedge 1116, adjusting wedge 111112, third bottom plate 112, gear 1121 40, third adjusting motor 11111111111111111111111111111111111111111111111111111111, adjusting mechanism 11140, and other parts a first rack 11241, a second rack 11242, a first clamping plate 11251, a second clamping plate 11252, a clamping plate main body 112521, a first mounting plate 112522, a groove 1125221, a second mounting plate 112523, a connecting plate 112524, a supporting structure 112525, a first probe 11261, a second air cylinder 112611, a second probe 11262, a loading table assembly 113, a loading platform 1131, a unloading platform 1132, a loading and unloading motor 11331, a first ball screw 11332, a first guide rail slider 11333, an organ shield 11334, a feeding slide table device 12, a slide table housing 1201, a slide table driving motor 1202, a second ball screw 1203, a screw seat 1204, a second guide rail slider 1205, a fixed chuck 121, a fixed chuck rotating motor 1211, a movable chuck 122, a movable chuck rotating motor 1221, a movable chuck driving motor 1222, a grinding device 13, a rough grinding wheel 131, a rough grinding motor 1311, a fourth ball screw 1312, a fourth guide rail slider 1313, a bracket 1311314, a fine grinding wheel 132, a detection assembly 133133, a base 1, a base 1311, A base plate 1332, a sliding plate 1333, a third probe 1334, a third cylinder 1335, a fifth rail slide 1336 and a silicon rod 2.

Detailed Description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, although the present embodiment is described with reference to a structure including four-dimensional adjustment, this is not intended to limit the scope of the present invention, and those skilled in the art may flexibly modify the structure without departing from the principle of the present invention, such as removing one or more dimensions (e.g., in some cases, the accuracy of one or more dimensions does not meet the requirement), or replacing the structure of the feeding assembly corresponding to the adjustment of the feeding accuracy of one or more dimensions with another structure.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Furthermore, while numerous specific details are set forth in the following description in order to provide a better understanding of the invention, it will be apparent to those skilled in the art that the invention may be practiced without some of these specific details. In some instances, the principles of grinding machines and the like, which are well known to those skilled in the art, have not been described in detail in order to not unnecessarily obscure the present invention.

For the purpose of description, the present invention first defines a three-dimensional coordinate system of such a silicon rod. The center of the silicon rod is an original point, the reverse direction of the feeding direction of the silicon rod on the grinding machine is the X-axis forward direction, the feeding direction of the silicon rod on the grinding machine is the Y-axis forward direction, and the vertical upward direction is the Z-axis forward direction. Based on this, the precision adjustment realized by the feeding assembly mainly comprises four dimensions: the silicon rod is lifted a certain distance along the Z-axis (hereinafter referred to as position adjustment along the Z-axis), moved a certain distance along the X-axis (hereinafter referred to as position adjustment along the X-axis), rotated a certain angle around the Z-axis direction (hereinafter referred to as angle adjustment along the Z-axis), and rotated a certain angle around the X-axis direction (hereinafter referred to as angle adjustment along the X-axis). According to the orientation of fig. 1, the X-axis forward direction is from back to front, the Y-axis forward direction is from left to right, and the Z-axis forward direction is vertically upward. Correspondingly, the position along the X/Y/Z axis is adjusted to move a certain distance in the front-back/left-right/vertical direction, and the angle along the X/Y/Z axis is adjusted to rotate a certain distance along the axis in the front-back/left-right/vertical direction.

Fig. 1 to 16 show a schematic structural diagram of a grinding machine according to an embodiment of the present invention, fig. 2 shows a schematic structural diagram of a feeding device of the grinding machine according to an embodiment of the present invention, fig. 3 shows a schematic structural diagram of a feeding device of the grinding machine according to an embodiment of the present invention, fig. 4 shows a schematic sectional view of a lifting assembly in the feeding device of the grinding machine according to an embodiment of the present invention, fig. 5 shows a schematic sectional view of a lifting assembly in the feeding device of the grinding machine according to an embodiment of the present invention, fig. 6 shows a schematic structural diagram of a lifting assembly in the feeding device of the grinding machine according to an embodiment of the present invention, fig. 7 shows a schematic structural diagram of an eccentric spindle in the lifting assembly of the grinding machine according to an embodiment of the present invention, fig. 8 shows a schematic structural diagram of a clamping assembly in a movable end assembly in a clamping assembly in the feeding device of the grinding machine according to an embodiment of the present invention, fig. 9 shows a schematic structural diagram of a clamping assembly in the clamping device of the feeding device of the grinding machine according to an embodiment of the present invention, fig. 11 shows a grinding machine according to an embodiment of the present invention, fig. 9 shows a schematic structural diagram of a clamping assembly in a clamping device of the present invention, fig. 11 shows a clamping assembly in a clamping device of the grinding machine according to an embodiment of the present invention, fig. 9 shows a clamping device of a clamping assembly in a grinding machine according to an embodiment of the present invention, fig. 11 shows a clamping device of a grinding machine according to an embodiment of the present invention, fig. 16 is a schematic view showing a detection state of a detection unit in a grinding apparatus of a grinding machine according to an embodiment of the present invention. The present invention is described below with reference to some or all of fig. 1 to 16.

Referring mainly to fig. 1, in a possible embodiment, the main body of the grinding machine 1 mainly includes a base 101 and a vertical frame 102 disposed at the bottom, and the base 101 has a certain horizontal adjustment function, so as to provide a mounting surface with a high level for the structures of the loading device 11, the grinding device 13, and the like of the grinding machine 1. Wherein, the top of the vertical frame 102 is provided with a guide rail on which the feed slide table device 12 is mounted. The grinding machine is mainly used for grinding the silicon rod 2 after being cut as a workpiece to be machined to a set specification. Specifically, in an ideal state, the silicon rod 2 after being opened is generally a rectangular parallelepiped having the same width and height. In practice, however, the surface of the opened silicon rod 2 is not flat, as is usually the case: the middle part of the silicon rod is convex compared with the two end parts, and the size of the silicon rod knife outlet is larger than that of the knife inlet (the side length of the square of the cut end surface of the diamond wire is larger than that of the square of the cut end surface of the diamond wire). Therefore, the cut silicon rod needs to be ground to an ideal rectangular parallelepiped with a standard specification by a grinding machine.

Referring mainly to fig. 2 and 3, in one possible embodiment, the loading device 11 is mainly used for clamping the silicon rod 2 by the fixed chuck 121 and the movable chuck 122 of the feeding slide unit 12 after the silicon rod is adjusted to a proper position and angle. In order to reduce the grinding amount, reduce the silicon loss and improve the grinding efficiency, the grinding machine 1 needs a high feeding precision. Under the condition that the feeding precision reaches the standard, the ideal axis of the silicon rod 2 and the axis between the (fixed and movable) chucks have higher coaxiality. The invention mainly enables the coaxiality to reach a more ideal level through the adjustment of the feeding device.

In one possible embodiment, the feeding device 11 mainly comprises a feeding assembly 111, a centering assembly 112 and a feeding table assembly 113. Wherein the feeding assembly 111 and the feeding table assembly 113 are required to adjust the position and posture (hereinafter referred to as pose) of the silicon rod 2 in the aforementioned four dimensions, the centering assembly 112 is used to mainly determine the adjustment amount of the feeding assembly 111 to the pose of the silicon rod 2. Specifically, loading assembly 111 generally includes a lift assembly 1111 and a clamp assembly 1112. According to the detection result of the centering assembly 112, the lifting assembly 1111 is mainly used for performing position adjustment along the Z axis and angular adjustment along the X axis (rotation in a vertical plane) on the silicon rod 2, and the clamping assembly 1112 is mainly used for performing angular adjustment along the Z axis (rotation in a horizontal plane) on the silicon rod 2. The feeding table assembly 113 is mainly used for adjusting the position of the silicon rod along the X axis in the process of moving the feeding assembly 111 holding the silicon rod 2 to the centering assembly 112. Based on this, after the feeding assembly 111 completes the adjustment of the silicon rod in four dimensions, the silicon rod with the (fixed, movable) chuck clamping pose reaching the standard is made, and the feeding process is completed.

Referring mainly to fig. 4 to 7, in one possible embodiment, the lifting assembly 1111 mainly includes a first base plate 11111 (base plate), an electric cylinder 11112 (first driving member), a driving plate 11113 as a driving member, a lifting wheel set including a first lifting wheel 111141 (e.g., the first lifting wheel includes two wheel units provided on a first wheel shaft 111191) and a second lifting wheel 111142, and a support plate 11115, wherein the driving plate 11113 has inclined planes 111131 inclined downward from left to right as guide planes at positions corresponding to the first lifting wheel 111141 and the second lifting wheel 111142, respectively.

In this example, the power output end of the electric cylinder 11112 and the transmission plate 11113 are connected in the following manner: the first bottom plate 11111 is provided with a connecting block 11116 as a connecting component, the connecting block 11116 is fixedly connected with a transmission plate 11113 above the first bottom plate 11111 by means of a fastener such as a screw, and the like, the lower part of the connecting block 11116 is provided with a protruding end, correspondingly, the power output end of the electric cylinder 11112 is provided with an annular groove matched with the protruding end, and the connecting block 11116 is connected with the electric cylinder 11112 by the matching of the protruding end and the annular groove.

Thus, when the power output end of the electric cylinder 11112 extends rightward, the driving plate 11113 disposed at the bottom of the housing is driven to move rightward synchronously. In addition, the two lifting wheels mounted on the supporting board 11115 can roll along the inclined plane 111131 from right to left, i.e. from low to high, and the supporting board can be driven to move in the vertical direction along with the rolling. In this way, the position of the silicon rod set on the support plate 11115 along the Z axis is adjusted. Similarly, the power output end of the electric cylinder 11112 retracts, the transmission plate 11113 moves leftwards, the lifting wheel rolls from high to low, and the supporting plate 11115 descends. For example, in order to better guide the movement of the driving plate 11113, a sliding rail adapted to the movement track of the driving plate 11113 may be provided on the first bottom plate 11111.

As described above, one of the expressions that the surface of the silicon rod 2 after the cutting is not flat is: the middle portion of the silicon rod is convex compared to the two end portions. In order to enable a more smooth placement of the silicon rod with this property on the carrier, the middle of the carrier is recessed further away from the silicon rod than on both sides, i.e. downwardly in the figure.

Illustratively, the support 11115 includes a support body 111151, two sides of the support body extending along the length direction are respectively provided with an upwardly extending support plate 111152 (mainly made of nylon, etc.), an upper surface of the support plate 111152 is a reference surface (called as reference surface a) directly contacting with a lower surface of the silicon rod 2, and the position of the support plate near the middle part forms the aforementioned recess, as a specific implementation manner: each side is provided with two spaced apart support plates 111152 which may be secured to the top of the pallet by fasteners such as screws, forming a recess therebetween. In this example, the support plate has a structure to avoid the silicon rod at a mounting portion corresponding to the fastener, such as a plurality of mounting sites provided on the support plate, the screw is provided at a position corresponding to the mounting site, and in a mounted state, the screw is completely accommodated at the mounting site and thus the top of the screw is not in contact with the bottom of the silicon rod.

It can be understood that, a person skilled in the art can flexibly adjust the manner of forming the recess in the pallet according to actual requirements, for example, two segments of separately arranged support plates can be integrally arranged, then the middle portion of the support plates can be integrally arranged to be the recess, and the support plates and the pallet body can be integrally arranged.

In one possible embodiment, the first base plate 11111 is provided with a connecting shaft 1117 engaged with the support plate 11115, and a return spring 1118 is further provided between the first base plate and the support plate. By the arrangement of the connecting shaft 1117, the movement of the supporting plate 11115 in the X-axis and Y-axis directions is restricted, so that the supporting plate 11115 can move only in the Z-axis direction under the guidance of the connecting shaft. When the electric cylinder 11112 is extended and the support plate 11115 is raised, the return spring 1118 is in a compressed/extended (compressed in this example) state. When the electric cylinder 11112 retracts, the supporting plate 11115 descends under the action of the elastic force of the return spring 1118 and the self-gravity of the supporting plate 11115, so that the supporting plate 11115 is reset. As in this example, the pallet is provided with a hole in which the connecting shaft is freely accommodated so that the pallet can smoothly rise (rise)/fall (return) in the axial direction of the connecting shaft. The bottom and the first bottom plate fixed connection or integrated into one piece of connecting axle, the top of connecting axle has the radial dimension that is greater than the hole, and the axial dimension of connecting axle can guarantee the required lifting volume of silicon rod.

As in this example, the pallet body of the pallet is substantially an open-bottomed enclosure structure, the aforementioned support plate is provided on the top of the enclosure structure, and the elevating wheels are provided on the side of the enclosure structure. Illustratively, the two lift wheels are mounted to the pallet 11115 in the manner of: first 111141 and second 111142 lift wheels are mounted to the sides of the housing structure by first 111191 and second 111192 axles, respectively. During extension/retraction of electric cylinder 11112, pallet 11115 achieves elevation/return of pallet 11115 in conjunction with the rotation of the two lift wheels and their rolling motion on incline 111131. Based on this, the function of the lifting component 1111 may be improved, and specifically, the lifting component may have a function of adjusting the position adjustment of the silicon rod along the Z axis, and may also have a function of adjusting the angle adjustment of the silicon rod along the X axis.

On the basis, in order to enable the lifting assembly to have the function of adjusting the angle adjustment of the silicon rod along the X axis besides the function of adjusting the position adjustment of the silicon rod along the Z axis. In the present invention, the functionality of lift assembly 1111 is improved.

In one possible embodiment, one of the first and

second wheel axles

111191, 111192 may be modified to an eccentric axle (also denoted as 111191), such as by modifying the first wheel axle 111191 corresponding to the first lifting wheel 111141 to an eccentric axle in the present example, and configuring the first adjustment motor 1111911 for the eccentric axle, such as by connecting the first adjustment motor (second drive member) to the eccentric axle via a reducer-coupling. In this way, when the first adjustment motor drives the eccentric shaft corresponding to the first lifting wheel to rotate by a certain angle, the first lifting wheel 111141 mounted on the eccentric shaft is lifted/lowered by a certain distance, and at this time, because a height difference occurs between the two lifting wheels, the support plate 11115 rotates by a certain angle around the X axis, thereby realizing the angle adjustment of the silicon rod along the X axis. In accordance with this, the joint bearing 11171 is mounted on the connecting shaft 1117, so that the connecting shaft is provided to restrict the movement of the pallet 11115 in the X-axis and Y-axis directions, but not to restrict the rotation of the pallet 11115 about the X-axis. In an actual product, for example, a mounting position corresponding to the first adjustment motor may be provided at a position corresponding to each of the first lifting wheel 111141 and the second lifting wheel 111142, and in this example, a removable cover plate 1111921 may be provided at a position corresponding to the second lifting wheel 111142. By removing the closure plate, the first adjustment motor can be replaced to a position corresponding to the second lift roller 111142.

Therefore, the silicon rods on the supporting plate can be lifted by a certain height along the vertical direction through the matching of the electric cylinder, the transmission plate and the (first and second) lifting wheels. Through the cooperation of first adjustment motor, eccentric shaft and first lifting wheel, can make the position of different parts along the direction of height of the silicon rod on the layer board distinguish. In this way, a position adjustment along the Z-axis and an angular adjustment along the X-axis of the silicon rod can be achieved by means of the lifting assembly.

Referring mainly to fig. 8 to 10, in one possible embodiment, the clamping assembly 1112 mainly comprises a clamping movable end assembly 11121 and a clamping fixed end assembly 11122, and the silicon rod 2 on the reference surface a of the supporting plate 11115 can be clamped in the X-axis direction by clamping the movable end assembly 11121 relative to the clamping fixed end assembly 11122. It should be noted that the clamping movable end assembly and the clamping fixed end assembly are only one specific form of the clamping assembly, and for example, both the clamping movable end assembly and the clamping fixed end assembly may be configured to be movable.

In one possible embodiment, the clamping movable end assembly 11121 mainly comprises a first air cylinder 111211, two sets of guide rail sliders (an X-axis guide rail slider 111212 and a Y-axis guide rail slider 111213), a movable end return spring 111214 and a movable clamping plate 111215, wherein after the silicon rod 2 to be ground is placed on the reference surface a of the lifting assembly 1111, the first air cylinder 111211 is extended, and the slider of the X-axis guide rail slider 111212 slides on the guide rail by pushing the bottom plate of the clamping movable end assembly 11121, so that the movable clamping plate 111215 is pushed to move towards the clamping fixed end assembly 11122, thereby clamping the silicon rod in the X-axis direction. When the (fixed and movable) chuck clamps the silicon rod, the movable chuck 122 will push the silicon rod to move a little along the Y-axis, and accordingly, the movable clamping plate 111215 will also move a little along the Y-axis in a manner that the slide block of the Y-axis guide rail slide block slides on the guide rail, such movement will make the two movable-end return springs 111214 disposed along the Y-axis direction in a compressed state and a stretched state, respectively. After the silicon rod is clamped by the (fixed and movable) chuck, the first cylinder 111211 is retracted, and simultaneously the two movable end return springs 111214 are restored, so that the movable clamping plate 111215 is restored.

In one possible embodiment, clamp fixed end assembly 11122 consists essentially of a fixed clamp plate 111221 and an adjustment assembly. The fixed clamping plate is provided with a reference surface b, the first cylinder 111211 drives the movable end clamping plate to move towards the direction close to the fixed end clamping plate, and the silicon rod can be clamped along the X direction. Similar to the structure and function of the clamping movable end assembly 11121, the clamping fixed end assembly 11122 is also provided with a Y-axis guide rail slider and a fixed end return spring which can make the movable end clamping plate return. The adjusting component is mainly used for adjusting the angle of the silicon rod along the Z axis.

In one possible embodiment, the adjustment assembly mainly includes a second base plate 1112221, an adjustment plate 1112222 and a positioning block 1112223, wherein the positioning block 1112223 can be fixed on the second base plate 1112221 by a fastener such as a screw 11122231, the adjustment plate 1112222 is fixed on a fixed clamping plate at one side thereof, and the adjustment plate 1112222 is mounted on the second base plate 1112221 at the other side thereof (near the left side position) by the positioning block 1112223. Wherein, there is a gap between the positioning block 1112223 and the adjustment plate 1112222, thereby allowing the adjustment plate 1112222 to rotate about the Z-axis by a small angle. In this way, by changing the included angle between the adjusting plate 1112222 and the second bottom plate 1112221, the silicon rod 2 clamped between the fixed end clamping plate and the movable end clamping plate can be rotated around the Z axis, thereby realizing the angle adjustment of the silicon rod 2 along the Z axis.

In one possible embodiment, the adjusting assembly further includes a second adjusting motor 1112224, an adjusting top block 1112225 and an adjusting wedge 1112226, and the present invention is mainly based on the second bottom plate 1112221, the adjusting plate 1112222 and the positioning block 1112223, and the angle of the silicon rod 2 along the Z-axis is adjusted by the cooperation of the adjusting top block and the adjusting wedge. As in the present example, the second adjustment motor 1112224 is a stepping motor. In the second bottom plate 1112221, an installation space is reserved at a position corresponding to the adjustment top block (a position close to the right side), and the adjustment top block 1112225 can be freely accommodated in the installation space and fixed to the adjustment plate by means of a fastener such as a screw. In the assembled state, the side (upper side) of the adjustment top block 1112225 close to the second base plate has a portion protruding out of the base plate.

As in this example, the upper side of the adjustment top block is substantially a cambered surface structure, and the cambered surface protrudes out of the second bottom plate 1112221 at a position close to the middle. Wherein a stepper motor is coupled to the adjust wedge 1112226 to move the adjust wedge toward/away from the adjust top block 1112225. The distance between the bottom plate and a downstream position of the side of the setting wedge close to the second bottom plate is smaller than the distance between the bottom plate and an upstream position of the side of the setting wedge close to the second bottom plate, as viewed in the advancing direction of the stepping motor. For example, the side of the adjust wedge 1112226 adjacent to the second base plate may be sloped, curved, or a combination thereof. In the orientation shown in the drawings, the underside of the setting wedge is, as in the present embodiment, a ramp surface that slopes downwardly from right to left.

In one possible embodiment, for example, a stepper motor may drive the adjust wedge 1112226 to move to the left via a T-bar. Preferably, a guide rail adapted to the movement track of the adjusting wedge may be disposed on the second bottom plate 1112221, so that the stepping motor drives the adjusting wedge to move leftward along the guide rail through the T-shaped screw. According to the orientation shown in the figure, the leftward movement of the adjusting wedge pushes the adjusting top block to move downward, and the adjusting top block is fixed on the adjusting plate 1112222, so that the adjusting plate rotates clockwise around the positioning block 1112223. Similarly, when the stepping motor rotates in the reverse direction, the adjusting wedge 1112226 moves rightward, the adjusting top block 1112225 moves upward, and the adjusting plate 1112222 rotates counterclockwise around the positioning block 1112223.

It can be understood that, on the premise that the accuracy is satisfied, the bottom surface of the adjusting wedge block can be changed into a plane, and the advancing direction of the stepping motor is set to have a certain included angle with the second bottom plate.

Referring primarily to fig. 3 and 11, in one possible embodiment, the loading platform assembly 113 primarily includes a loading platform 1131, a loading platform 1132, and two sets of drive linkages disposed therebetween. As in this example, the driving transmission mechanism mainly includes a loading and unloading motor 11331, a first ball screw 11332 and a first rail slider 11333, and the loading and unloading motor drives the first ball screw to move under the guidance of the first rail slider and generate displacement along the X-axis direction. The two sets of transmission mechanisms are respectively used for driving the feeding platform 1131 and the discharging platform 1132 to move along the X-axis direction, so that the position of the silicon rod in the X-axis direction is adjusted, and the feeding process and the discharging process are completed. As in this example, an organ shield 11334 is disposed between the feeding platform and the discharging platform to perform a certain waterproof and dustproof function while ensuring that feeding and discharging can be achieved.

Referring mainly to fig. 12, in a possible embodiment, the centering assembly 112 mainly includes a third bottom plate 1121, a centering motor (not shown) disposed on the third bottom plate 1121, a rack-and-pinion mechanism, a clamp plate group, and a first probe group, in this example, the centering motor is a servo motor, the rack-and-pinion mechanism includes a gear 11240 connected to a power output end of the servo motor, and upper and lower racks (respectively denoted as a first rack 11241 and a second rack 11242) engaged with the gear 11240, the clamp plate group includes a first clamp plate 11251 and a second clamp plate 11252 disposed opposite to each other and connected to the first rack 11241 and the second rack 11242, respectively, and the first clamp plate 11251 and the second clamp plate 11252 are respectively configured with a first probe group, wherein the first probe group includes two probes (respectively denoted as a first probe 11261 and a second probe 11262) for mainly detecting an amount of adjustment of the attitude of the silicon rod.

In this example, a servo motor is provided on the back side (rear side in the drawing) of the third base plate at a substantially central position, a power output end of the servo motor protrudes out of the front side of the third base plate and is connected with a first gear 11240, a position on the left side of an upper first rack 11241 and a position on the right side of a lower second rack 11242 are engaged with the gear 11240, respectively, and the right end of the first rack 11241 and the left end of the second rack 11242 are connected to a left first bridge 11251 and a right second bridge 11252, respectively. In operation, the feeding assembly 111 conveys the silicon rod to the position below the centering assembly 112 and stops moving, and the (first and second) clamping plates respectively move from the outer side to the inner side and stop moving after clamping the silicon rod. To ensure the stability of the movement, the base plate is provided with guide rails and the (first and second) jaws are provided with guide grooves matching the guide rails, so that the rotation of the servo motor drives the gear 11240 to rotate and the (first and second) racks move inwards by means of the engagement with the gear 11240 to move the (first and second) jaws on the guide rails.

The (first and second) clamping plates of the centering assembly 112 adjust the position of the silicon rod in the Y-axis direction, so that the (movable and fixed) chuck of the feeding slide unit 12 reaches a proper position in advance before clamping the silicon rod, and the length of the silicon rod can be measured. The first probe 11261 and the second probe 11262 of the two first probe sets determine the adjustment amount of the position and angle of the silicon rod by inspecting the rear side surface and the upper side surface of the silicon rod, respectively.

The structural configuration of the first/second splint and the arrangement of the first probe set on the respective splint will be described below by taking as an example the second splint 11252 corresponding to the right side. In one possible embodiment, the second clamp 11252 mainly comprises a clamp body 112521 for holding the silicon rod 2, a first mounting plate 112522 on which a groove 1125221 is formed to fit with the aforementioned guide rail on the third base plate, and a second mounting plate 112523 on which a first probe 11261 is formed, a second mounting plate 112523 substantially parallel to the first mounting plate and formed at a position behind the lower side of the first mounting plate, and a second probe 11262 is formed. The second mounting plate is attached to the first mounting plate by a transverse attachment plate 112524. In order to ensure the reliability of the second clamping plate, a supporting structure 112525 is provided at the junction between the second mounting plate 112523 and the connecting plate 112524.

In this example, the first probe 11261 is required to calculate the outer dimension of the silicon rod 2 according to the magnitude of the amount of compression of the head portion of the first probe 11261 after the head portion thereof is protruded to hit the upper side surface of the silicon rod 2. After the completion of the inspection, it is necessary to keep the head thereof away from the upper side surface of the silicon rod 2. In order to realize the extension and contraction of the head part of the first probe 11261, for example, a second cylinder 112611 may be provided for the first probe 11261, and for example, when the second cylinder 112611 is mounted on the first mounting plate, the head part of the first probe may be pushed to extend, and the head part of the first probe may be compressed after hitting the surface of the silicon rod 2. The second probe 11262 is fixed to the second mounting plate 112523 without using a cylinder. Specifically, the second probe 11262 may be compressed by moving the silicon rod 2 toward the second probe 11262 by the loading device 11, so as to obtain the amount of compression. Namely: the detection of the rear side surface of the silicon rod by the second probe 11262 can be achieved along with the movement of the silicon rod in the X-axis direction.

Based on this, the working principle of the centering assembly 112 is: after the silicon rod 2 is clamped by the pair of clamping plates of the centering assembly 112 and then released, the feeding platform 1131 continues to advance for a certain distance along the X-axis direction, the two second probes 11262 are compressed, so that the external dimension (width) of the silicon rod 2 along the X-axis direction is obtained, and the width difference of the two ends of the silicon rod 2 is obtained through the pair of second probes 11262. Then, the second cylinders 112611 corresponding to the two first probes extend out to drive the heads of the two first probes 11261 to contact with the upper surface of the silicon rod and compress for a certain distance, so that the external dimension (height) of the silicon rod along the Z-axis direction is obtained, and the height difference between the two ends of the silicon rod is obtained through the pair of first probes 11261. And calculating the required adjustment amount of the silicon rod through the detected width difference and height difference, adjusting the adjustment amount through the feeding device 11, and enabling the (fixed and movable) chuck to clamp the silicon rod 2 after the adjustment is finished so as to finish feeding.

Referring primarily to fig. 13, in one possible embodiment, feed slide assembly 12 generally includes a slide assembly, which generally includes a slide housing 1201 and a slide drive system, a stationary clamp 121, and a movable clamp 122. The slide table driving system mainly includes a slide table driving motor 1202, a second ball screw 1203, a screw base 1204, and a second rail slider 1205. The screw base 1204 and the second rail slide 1205 are both installed on the vertical frame 102 of the grinding machine 1, and the sliding table driving motor 1202 drives the ball screw to move under the guidance of the second rail slide 1205 and generate displacement along the X-axis direction, so that the sliding table assembly moves along the Y-axis direction. The slide table housing 1201 is mounted on the second rail slider 1205, and the stationary chuck 121 is fixed to the slide table housing 1201 to move along the Y axis in synchronization with the slide table assembly. The movable chuck 122 is mounted on the slide housing 1201 by a movable chuck driving system, which includes a movable chuck driving motor 1222, a third ball screw (not shown), and a third rail slider (not shown), as similar to the slide driving system. Thus, the movable chuck 122 can move along the Y-axis synchronously with the slide assembly via the slide drive motor 1202, or can move along the Y-axis relative to the slide assembly via the movable chuck drive system. In addition, the fixed chuck 121 and the movable chuck 122 are provided with a fixed chuck rotation motor 1211 and a movable chuck rotation motor 1221, respectively, in order to rotate the silicon rod after the (fixed, movable) chuck has gripped the silicon rod, for example, to rotate the silicon rod from one surface to be ground to the other surface to be ground.

Referring mainly to fig. 1, 14 to 16, in one possible embodiment, the grinding device 13 mainly includes a pair of oppositely disposed rough grinding wheels 131 for rough grinding of the silicon rod 2, a pair of oppositely disposed finish grinding wheels 132 for finish grinding of the silicon rod 2, and a detection assembly 133. The finish grinding wheel 132 is located on the downstream side of the rough grinding wheel 133 in the silicon rod feeding direction so as to finish grinding after rough grinding of a certain grinding surface, and the detection unit 133 is disposed on the rough grinding wheel 131 and mainly used for detecting the position of the silicon rod 2 before the grinding operation is started.

In one possible embodiment, the rough grinding motor 1311 drives the fourth ball screw 1312 to drive the carriage 1314 carrying the rough grinding wheel 131 to move in the X-axis direction by the guide of the fourth rail block 1313. The detection unit 133 is mounted on a carriage 1314 for carrying the rough grinding wheel 131. For example, the finishing grinding wheel 132 may move in a manner similar to that of the rough grinding wheel 131, and will not be described herein.

In one possible embodiment, the detection assembly 133 mainly includes a base 1331, a base plate 1332, a slide plate 1333, a second probe set, a third air cylinder 1335 and a fifth rail slide 1336. Among them, the base plate 1332 is fixed on the base 1331, and the slide plate 1333 is disposed on the base plate 1332 through the fifth rail block 1336, for example, the second probe group includes three third probes 1334 arranged in the vertical direction and installed on the slide plate 1333. During detection, the third cylinder 1335 extends to push the sliding plate 1333 to extend along the X-axis direction, and after detection is finished, the third cylinder 1335 retracts to pull the sliding plate 1333 to retract.

It can be seen that in the feeding device of the grinding machine, the position of the silicon rod along the Z axis is adjusted through the matching of the transmission plate, the connecting shaft and the lifting wheel in the lifting assembly. On the basis, by configuring an eccentric shaft for one of the lifting wheels, the silicon rod can be simultaneously adjusted in angle along the X axis by the lifting assembly. And the adjusting assembly is added to the clamping fixed end assembly of the clamping assembly, and the adjusting plate fixed to the fixed end clamping plate rotates around the positioning block based on the matching of the adjusting wedge block and the adjusting top block, so that the silicon rod is adjusted along the Z axis. The feeding table component is added to enable the position of the silicon rod to be adjusted along the X axis in the moving process of the feeding component holding the silicon rod. Based on the scheme of the invention, the silicon rod can be adjusted in four dimensions through the feeding device, so that the feeding precision of the grinding machine is ensured.

Based on the above structure, an embodiment of the adjustable lift control method of the grinding machine of the present invention will be described below with reference mainly to fig. 17.

Referring to fig. 17, fig. 17 is a flowchart showing a control method of a grinding machine according to an embodiment of the invention. As shown in fig. 17, in a possible embodiment, the adjustable lifting control method of the grinding machine of the present invention mainly includes the following steps:

s1701, after the silicon rod is initially adjusted by the feeding device, the silicon rod is sent to the grinding area by the feeding slide table device.

Specifically, after the feeding device 11 finishes adjusting the pose of the silicon rod 2, and the feeding slide unit 12 reaches a predetermined position according to the length of the silicon rod measured by the centering assembly 112, the movable chuck 122 moves along the Y-axis relative to the slide unit, so that the silicon rod is clamped by the cooperation between the fixed chuck 121 and the movable chuck 122. Thereafter, the feed slide table device 12 moves along the Y axis, transporting the silicon rod 2 to the grinding area.

S1703, detecting the silicon rod by a detection component in the grinding device, and judging whether the state of the silicon rod meets the condition for grinding the silicon rod by the grinding component according to the detection result of the detection component; if not, the process proceeds to S1705, and if so, the process proceeds to S1707.

Before grinding, the detection component 133 detects the silicon rod 2. In a possible embodiment, the detecting assembly 133 detects the silicon rod 2 by: when the silicon rod 2 stops moving after reaching the first detection position, the third cylinder 1335 of the detection assembly 133 extends to push the third probe 1334 to move along the X-axis direction, and the position of the third probe 1334 is advanced with respect to the grinding wheel. Then, the rough grinding wheel 131 and the inspection unit 133 continue to move in the X-axis direction by the driving of the rough grinding motor 1311 until the third probe contacts the silicon rod and the inspection is completed (spot-grinding is not performed). Along with the movement of the silicon rod along the Y-axis direction, the third probe can detect the knife inlet position, the middle position along the length of the silicon rod and the knife outlet position of the silicon rod in sequence, then the chuck drives the silicon rod to rotate 90 degrees, and the detection process is repeated.

The determination result of determining, by the detection result of the detection unit 133, that the state of the silicon rod does not satisfy the condition for grinding by the grinding unit specifically includes: 1) If the maximum grinding size of the silicon rod is smaller than the standard size after grinding, the size of the rod is judged to be unqualified, the rod cannot be ground, and the silicon rod can be returned to the blanking platform (returned). 2) On the premise that the silicon rod is qualified, the position deviation and the angle deviation between the axis of the (fixed or movable) chuck and the axis of the silicon rod can be measured through the measurement of the second probe group on the three positions of the silicon, and if the deviation is greater than a specified value, the state of the silicon rod is considered to be not satisfied with the condition that the grinding component grinds the silicon rod. The cases where the condition is not satisfied mainly include two types: 21 Angle of the silicon rod along the Y-axis has a deviation, which can be adjusted, for example, by rotating the (stationary, movable) chuck; 22 Has a deviation in position/angle of the silicon rod along the (X, Z) axis, which is the case discussed in the present invention, the process may proceed to S1705..

And S1705, directly replacing the silicon rod (without manual intervention) on the feeding device, and adjusting the position state of different parts of the silicon rod along the vertical direction through a lifting component of the feeding device.

Specifically, the silicon rod is directly placed on a feeding platform of the feeding device, and the pose of the silicon rod is secondarily adjusted on the feeding platform. As mentioned in the foregoing, the position state of different parts of the silicon rod along the Z-axis can be adjusted by means of the eccentric shaft in the lifting assembly. The principle of the regulation is as follows: on the one hand, when the electric cylinder as the first driving means drives the driving plate as the driving means to traverse from left to right, (the first and second) lifting wheels rotate counterclockwise along the respective inclined surfaces (inclined downward from left to right), and thus lift the pallet and the silicon rod disposed thereon. On the other hand, the rotation of the first adjusting motor as the second driving part can drive the eccentric shaft to rotate. The lifting heights of different parts of the silicon rods arranged on the supporting plate are different by rotating the first lifting wheel around the first wheel shaft (eccentric shaft), rotating the second lifting wheel around the second wheel shaft and driving the eccentric shaft to rotate through the first adjusting motor.

And after the adjustment is finished, returning to S1703 for re-detection, and after the detection is finished and the condition for grinding the workpiece by the grinding assembly is met, turning to S1707.

And S1707, grinding the silicon rod by the grinding component.

Specifically, the grinding assembly mainly includes a rough grinding wheel and a finish grinding wheel, and during the aforementioned detection process, the grinding amount of the rough grinding wheel 131 can be calculated, and according to the grinding amount, the rough grinding wheel advances a certain distance toward the X-axis to perform rough grinding. After the rough grinding is finished, the detection assembly repeats the previous detection process to calculate the grinding amount of the finish grinding wheel 132, and the finish grinding wheel advances a certain distance to the X axis similarly according to the grinding amount to carry out finish grinding.

S1709, finishing grinding and blanking.

After grinding is completed, the feeding sliding table device returns to the blanking area of the feeding device, and at the moment, the (fixed and movable) chuck loosens the silicon rod, so that the silicon rod falls to the blanking platform corresponding to the blanking area, and blanking is completed.

It can be seen that in the adjustable lifting control method of the grinding machine of the invention, such adjustment is achieved by means of the lifting assembly comprising the eccentric shaft, by returning to the loading device, according to the detection result of the detection assembly: the position states of different local parts of the silicon rod along the vertical direction are differentiated, and the feeding progress of the grinding machine is ensured based on the position states. Obviously, the compliance of the feeding accuracy includes compliance corresponding to one dimension achieved by the adjustable lifting control method described above, but also compliance of several other dimensions (such as another dimension based on the lifting assembly, one dimension based on the drive transmission system, one dimension based on the centering assembly, one dimension based on the (fixed, movable) chuck), therefore, the control method of the present invention essentially belongs to one branch of the compliance of the feeding accuracy, namely: only the logic of this branch is illustrated, and those skilled in the art may adopt the same or different structure as the foregoing structure to implement precision adjustment of the corresponding dimension according to actual requirements.

It should be noted that, although the foregoing embodiments describe each step in a specific sequence, those skilled in the art may understand that, in order to achieve the effect of the present invention, different steps do not have to be executed in such a sequence, and may be executed simultaneously or in other sequences, and some steps may be added, replaced or omitted. Such as may be: the specific switching mode between the rough grinding and the fine grinding can be adjusted according to actual situations; on the premise that the silicon rod does not meet grinding conditions, the feeding device is returned to adjust only one part (four dimensions (main) and position adjustment along the Y axis corresponding to the centering component), and the rest part is realized by rotation between (fixed and movable) chucks in the feeding sliding table device, namely on the premise that the angle state along the Y axis needs to be adjusted and the states of the four dimensions need to be adjusted through the feeding device, the sequence can be set according to actual conditions; and so on.

It should be noted that, although the method for controlling the lifting of the grinding machine configured in the above-described specific manner is described as an example, those skilled in the art will appreciate that the present invention should not be limited thereto. In fact, the user can flexibly adjust the relevant steps and the parameters and other elements in the steps according to the situation such as the actual application scene, for example, when the adjustment of two dimensions is realized through the lifting assembly, the two adjustments can be performed simultaneously or sequentially, and the like.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is apparent to those skilled in the art that the scope of the present invention is not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims

1. An adjustable lift assembly, the lift assembly comprising:

a first drive member;

a lifting wheel set comprising a plurality of lifting wheels, the first drive member being in driving connection with the lifting wheels; and

the supporting plate is used for arranging the workpiece to be machined, and the lifting wheel is operatively connected with the supporting plate;

the first driving component can drive the plurality of lifting wheels to rotate so as to lift the supporting plate and the workpiece to be machined arranged on the supporting plate;

the lift assembly further comprises:

an adjustment portion in signal connection with at least the lift wheel to:

the lifting heights of the supporting plate corresponding to the positions of the plurality of lifting wheels are different.

2. The adjustable lift assembly of claim 1 further comprising a constraining member, wherein the platform is adapted to displace in a height direction in cooperation with the constraining member and thereby lift the platform and a member to be processed disposed thereon.

3. An adjustable lift assembly as defined in claim 2 wherein at least a portion of said lift wheels are rotatably fixedly attached to said platform,

the lifting assembly further comprises a transmission component, the transmission component is connected with the first driving component on one hand and is butted with the lifting wheel on the other hand,

wherein the transmission member has an inclined guide surface at a position close to the lifting wheel so that:

when the first driving component drives the transmission component to move transversely, the lifting wheel rotates along the guide surface, and therefore the supporting plate and the workpiece to be machined arranged on the supporting plate are lifted.

4. An adjustable lift assembly as claimed in claim 3 wherein the lift wheel is rotatably mounted to an axle,

at least a part of the axles of the plurality of lifting wheels is an eccentric shaft, which eccentric shaft is provided with a second driving member,

the adjusting part includes a controller, the second driving part, and the eccentric shaft,

the eccentric shaft is mechanically connected with the lifting wheel corresponding to the eccentric shaft so that the lifting wheel is driven by the transmission component to rotate, and the controller is in signal connection with the second driving component so that:

the second driving part operates according to the instruction of the controller and thus causes the eccentric shaft to rotate.

5. An adjustable lift assembly as defined in claim 1 wherein said first drive member is a power cylinder or an electric motor.

6. An adjustable lift assembly as claimed in claim 3 or 4, further comprising a base plate, the base plate and the blade forming a chamber therebetween,

the transmission component is accommodated in the chamber and/or the first driving component is arranged on the side of the bottom plate far away from the chamber.

7. The adjustable lift assembly of claim 2 further comprising a base plate, said base plate and said platform defining a chamber therebetween,

the restricting member is fixed to the base plate.

8. The adjustable lift assembly of claim 6 further comprising a return spring disposed between the base plate and the platform.

9. An adjustable lift assembly as claimed in claim 2 wherein the restraint member is a connecting shaft and the support plate is provided with an aperture in which the connecting shaft is freely received.

10. The adjustable lift assembly of claim 1 wherein said blade is recessed away from the workpiece at a location near the middle of the side of the blade near the workpiece as viewed along the length of the workpiece.

11. The adjustable lift assembly of claim 10 wherein said pallet includes a pallet body and a support plate, said lift wheels being disposed on said pallet body and said work piece being disposed on said support plate,

the supporting plate is of a structure which is sunken towards the direction far away from the workpiece to be machined at the position, close to the middle, of one side close to the workpiece to be machined.

12. The adjustable lift assembly of claim 11 wherein said support plates comprise two spaced apart sets, as viewed along the length of the workpiece, each set of support plates comprising at least one support plate, the two sets of support plates defining a structure therebetween that is concave in a direction away from the workpiece; or

The supporting plate is of an integrally formed structure, and a structure which is sunken towards the direction far away from the workpiece to be machined is formed at the position, close to the middle, of the supporting plate.

13. An adjustable lift assembly according to claim 1 or 2 wherein the lift wheels are cams, each cam being in driving connection with a corresponding first drive member or via a transmission mechanism, respectively,

the adjusting part comprises a controller which is in signal connection with the first driving part so that at least one part of the cams lifts the supporting plate and the height of the workpiece to be machined arranged on the supporting plate is different from that of other cams.

14. A grinding machine comprising an adjustable lift assembly as claimed in any one of claims 1 to 13.

15. A grinding machine as claimed in claim 14 wherein the parts to be machined are silicon rods.

16. An adjustable lifting control method of a grinding machine is characterized in that the grinding machine comprises a feeding device and a grinding device, the feeding device comprises a lifting assembly, the grinding device comprises a grinding assembly and a detection assembly, the lifting assembly comprises a first driving part, a lifting wheel set, a supporting plate and an adjusting part, the lifting wheel set comprises a plurality of lifting wheels,

the control method comprises the following steps:

judging whether the state of the workpiece to be machined meets the condition for grinding the workpiece by the grinding assembly or not according to the detection result of the detection assembly;

if not, selectively placing the workpiece to be machined on the feeding device, and:

the first driving part is operated, and the plurality of lifting wheels are driven to rotate by the first driving part so as to lift the supporting plate and the workpiece to be machined arranged on the supporting plate;

operating the adjusting part such that the elevation heights of the pallet are different corresponding to the positions of the plurality of elevating wheels.

17. The control method according to claim 16, wherein the lifting assembly further comprises a restricting member, and the pallet is displaced in a height direction by cooperation of the restricting member, and thereby lifts the pallet and the member to be processed provided on the pallet.

18. Control method according to claim 16 or 17, characterized in that at least a part of the lifting wheels is fixedly connected to the carrier in a rotatable manner,

the lift assembly further comprising a transmission member having an inclined guide surface at a position adjacent to the lift wheel,

accordingly, the "driving the plurality of lifting wheels to rotate by the first driving part so as to lift the pallet and the workpiece to be processed arranged on the pallet" includes:

19. The control method according to claim 18, wherein the lifting wheel is rotatably provided to a wheel shaft,

accordingly, "operating the adjusting part so that the elevation heights of the pallet are different corresponding to the positions of the plurality of elevating wheels" includes:

a controller operates the second drive component to:

the eccentric shaft is driven to rotate by the second driving component, so that the lifting heights of the supporting plate corresponding to the positions of the lifting wheels are different.

20. The control method according to claim 16 or 17, wherein the lifting wheel is a cam, the adjusting portion includes a controller,

accordingly, the "operating the adjusting part so that the elevation heights of the pallet are different corresponding to the positions of the plurality of elevating wheels" includes:

the height of at least a part of the plurality of cams for lifting the pallet and the workpiece to be processed disposed on the pallet is made different from the other cams, and thus the lifting height of the pallet corresponding to the positions of the plurality of lifting wheels is made different.

21. A computer readable storage medium comprising a memory adapted to store a plurality of program codes, wherein the program codes are adapted to be loaded and executed by a processor to perform the method of adjustable lift control for a grinding machine as claimed in any one of claims 16 to 20.

22. A computer apparatus comprising a memory and a processor, the memory adapted to store a plurality of program codes, wherein the program codes are adapted to be loaded and run by the processor to perform the adjustable lift control method of a grinding machine according to any one of claims 16 to 20.

23. An adjustable lift control system for a grinding machine, the control system including a control module configured to perform the adjustable lift control method for a grinding machine of any one of claims 16 to 20.