CN114559368A

CN114559368A - Multifunctional fast-assembling flat grinding tool

Info

Publication number: CN114559368A
Application number: CN202111545510.3A
Authority: CN
Inventors: 汪增福
Original assignee: Hangzhou Dahe Thermo Magnetics Co Ltd
Current assignee: Hangzhou Dahe Thermo Magnetics Co Ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-05-31

Abstract

The invention discloses a multifunctional fast-assembling flat grinding tool, which comprises at least one layer of tool main body, wherein the tool main body comprises a polygonal arrangement groove arranged in the middle, the polygonal arrangement groove comprises a core corner, through grooves are arranged on groove walls on two sides of the core corner, and a limiting rod is movably arranged in each through groove; the groove walls opposite to the core corners are core groove walls, and the limiting rods can move in the direction of the core groove walls to adjust the area of a clamping area of the placement groove. Through set up polygon arrangement groove in the frock main part, but the gag lever post of translation adjustment polygon arrangement groove clamping area realizes the quick clamping of the work piece that the draw ratio is high, and the structure is simplified, and it is convenient to use.

Description

Multifunctional fast-assembling flat grinding tool

Technical Field

The invention relates to the technical field of tool fixtures, in particular to a multifunctional fast-assembling flat grinding tool.

Background

The fixed grinding process that takes magnetism to fix on the grinding machine disk by work piece material itself usually of present flat grinder processing, but long tubular part, because with the sucking disc area of contact undersize, can make the part topple over and arouse the incident owing to receiving thrust action at flat grinder processing, do not take the magnetism work piece to do not consider usually to process or use the frock fixed on flat grinder, but current frock commonality is poor, lead to the frock cost of manufacture too high, and the precision can not satisfy the drawing tolerance requirement, finally lead to the work piece bad more, the grinding machine utilization ratio is relatively poor.

The existing tool has the main defects that:

1. the conventional magnetic workpiece usually utilizes a magnetic disc of a grinding machine workbench to fix a product, and a common product can be normally processed, but the workpiece with high processing length-diameter ratio is difficult to fix and control precision;

2. under the condition that magnetic force cannot be used for fixing, machining of an upper grinding machine is usually not considered, so that part of tolerance cannot be realized, a special tool needs to be manufactured, but the universality is poor, the cost of a workpiece is high, and the precision control is difficult;

3. the long-tube part is small in contact area with the sucker, so that the part can be toppled over due to the thrust effect during plane grinding, the part cannot be normally machined, and safety accidents are caused simultaneously.

For example, a "fixture for welding steel pipes" disclosed in chinese patent document, whose publication number "CN 207757154U" includes a joint fixture, a centering rod, a sleeve retractable mechanism, a welding gun positioning and clamping mechanism, and a platform fixture, where the lower end of the bracket is fixed on a welding rotating platform, the fixed end of the welding gun positioning and clamping mechanism is installed at the upper end of the bracket, one end of the centering rod is connected with the top end of the bracket through the sleeve retractable mechanism, the other end of the centering rod is located above the clamping end of the welding gun positioning and clamping mechanism, the joint fixture is clamped on the platform fixture arranged on the welding rotating platform, the joint to be welded is sleeved into the joint fixture, and the joint to be welded can be placed into the platform fixture, one end of the steel pipe to be welded is inserted into the self-fusing step of the joint to be welded, and then the pipe body of the steel pipe to be welded is inserted into the elastic nip arranged on the centering rod, so that the axis of the steel pipe to be welded, which is centered by the centering rod, and the axis of the steel pipe to be welded are on the same straight line, And is in a vertical state. According to the scheme, the workpieces with the high length-diameter ratio can be fixed, but follow-up processing interference possibly caused by clamping opening fixation needs to be adjusted for multiple times, clamping precision cannot be guaranteed, clamping efficiency is low, the number of the clamped workpieces is limited every time, and production efficiency is affected.

Disclosure of Invention

The problem of clamping stability, clamping precision and clamping efficiency can't be compromise to the work piece that the draw ratio is high among the prior art is aimed at. The invention provides a multifunctional fast-assembly flat grinding tool, which is simple in structure and convenient and fast to use.

The second invention aims to solve the problem that when a clamping tool clamps a workpiece with a high length-diameter ratio, the clamping position along the length of the workpiece is prone to deviation, so that the whole clamping accuracy is not ideal.

In order to achieve the purpose, the invention adopts the following technical scheme:

a multifunctional fast-assembling flat grinding tool comprises at least one layer of tool main body, wherein the tool main body comprises a polygonal arrangement groove arranged in the middle, the polygonal arrangement groove comprises a core corner, through grooves are formed in groove walls on two sides of the core corner, and limiting rods are movably arranged in the through grooves; the groove walls opposite to the core corners are core groove walls, and the limiting rods can move in the direction of the core groove walls to adjust the area of a clamping area of the placement groove. The core corner is the clamping benchmark of frock main part, and when operating personnel removed the gag lever post, the gag lever post was at logical inslot translation, and core corner position unchangeable, therefore the region between gag lever post and the core corner is adjustable clamping region promptly, no matter work piece quantity, only need remove the gag lever post until work piece butt core corner both sides cell wall, then show that the work piece clamping targets in place, the simple operation, and clamping efficiency is showing and is promoting, can the clamping several treat the flat grinding work piece.

The core groove wall is provided with a mounting hole, a control rod is arranged in the mounting hole and perpendicular to the limiting rod, and the control rod can drive the limiting rod to move horizontally towards the core corner direction. Furthermore, a bearing is arranged between the front end of the operating rod and the limiting rod, and the operating rod is in threaded connection with the mounting hole. Furthermore, the position that the upper end face of frock main part corresponds the mounting hole is provided with the locking hole, locking hole female connection has locking screw, locking screw in locking hole and butt fixed operating lever. The handle is arranged at the tail end of the operating rod, and the handle is detachably connected with the operating rod.

The operating rod is used for assisting an operator to accurately adjust the position of the limiting rod, when clamping work starts, the operator rotates the operating rod, the operating rod is screwed into the mounting hole, the limiting rod is fed along the axial direction of the operating rod, adjustment of a triangular clamping area formed by the limiting rod and two side groove walls of the core corner is achieved, after a workpiece is fixed in the clamping area in a butting mode and positioning is completed, the locking hole is locked through the locking screw, the locking screw butts against an external thread structure of the operating rod, fixing of the operating rod is achieved, and therefore determination of the clamping area is guaranteed. Above-mentioned clamping scheme easy operation, the clamping is efficient, and utilizes the clamping region of triangle-shaped to ensure that the high cast work piece clamping of draw ratio is stable, can not appear the work piece drunkenness problem after locking screw is fixed. An operator can select a handle with a proper force arm length according to the weight and the number of the workpieces so as to ensure that the rotating handle does not need to waste too much when pushing the workpieces to be concentrated, and the labor intensity is reduced.

In particular, the through slots extend from both sides of the core corners to both sides of the core slot walls. No matter how many the side quantity in polygon arrangement groove, lead to the groove and must run through and set up whole frock main part, and this kind of design can guarantee that the butt of work piece figure is fixed to the homoenergetic in the uncertain all kinds of clamping circumstances of work piece figure, can not appear because of the unable fixed circumstances of work piece figure is few. Preferably, the polygonal arrangement groove is of a triangular structure, the structure has an optimal fixing mode for the cylindrical workpiece, the number of corners of the polygonal arrangement groove in the clamping area can be reduced as far as possible, the larger the number of corners is, the larger the angle of a single corner is, and the possibility of workpiece movement is undoubtedly increased.

Preferably, the bottom of the tool main body is provided with an equipment workbench which is a magnetic part, and the equipment workbench can be used for fixing the tool main body in a suction mode. Still accessible magnetic force of frock main part is connected fixedly with equipment work platform, and this kind of mode is used for fixing a position the frock main part on low floor most suitably, need not additionally to set up location structure, and it is comparatively convenient to use.

Preferably, the frock main part includes base module and heightening module, heightening module is last to be provided with a plurality of connecting holes along circumference, and heightening module's lower terminal surface is provided with the joint post through the connecting hole connection, the up end of base module corresponds the joint post and is provided with a plurality of joggles, the joggle upwards is provided with the mounting from the bottom, mounting run-through joggle and with the joint post connection. The height increasing module is connected with the base module through the joint column, because the connecting hole corresponds the setting with the joint hole, consequently, utilize the joint column to link up connecting hole and joint hole, the cooperation mounting locks the joint column, can realize the stable connection of height increasing module and base module, make whole tool equipment obtain extending on work piece length direction, avoid the clamping of work piece to produce the skew, the polygon mounting groove that can guarantee the base module simultaneously corresponds from top to bottom with the polygon mounting groove that increases the module, ensure work piece vertical positioning, the problem that follow-up processingquality is influenced in the slope can not appear.

Further, the joint column comprises a column body and a column head arranged at one end of the column body, and a threaded hole groove is formed in the other end of the column body; the column cap can be in threaded connection with the connecting hole of the heightening module, and the fixing piece is connected with the threaded hole groove. The joint column utilizes the column cap to carry out the pre-connection with increasing the module, and the rethread screw hole groove is connected with the mounting in the joint hole, has improved the location efficiency that increases the module, ensures that the polygon mounting groove that increases the module can correspond the polygon mounting groove of base module fast, and the assembly is convenient, and the location is accurate.

Furthermore, a clamping table is arranged between the column head and the column body, a countersunk groove is formed in an orifice of the connecting hole, and the clamping table can be connected with the countersunk groove in a clamping mode. Whether the column cap screw in connecting hole is screwed in place or not can be judged rapidly by checking the matching condition of the clamping table and the countersunk groove, so that the parallelism of the height increasing module and the base module is optimized, the orthographic projection of the polygonal arrangement groove of the height increasing module is ensured to be overlapped with the orthographic projection of the polygonal arrangement groove of the base module, and the positioning consistency of the workpiece in the length direction is met.

Furthermore, equal-height grooves are formed in the column body, the equal-height grooves of the column body correspond to the external threads of the column head, and the equal-height grooves and the external threads are in consistent corresponding relation in different joint columns. The equal-height grooves can facilitate an operator to use a wrench to twist the joint columns to complete disassembly and assembly, and meanwhile, as the equal-height grooves are consistent with the external threads of the column heads on all the joint columns in terms of corresponding modes, for example, the rightmost side line of the equal-height groove of one joint column is on the same vertical line with the starting position point of the external thread of the column head of the joint column, and the rightmost side line of the equal-height groove of the other joint column is also on the same vertical line with the starting position point of the external thread of the column head.

Therefore, the invention has the following beneficial effects: (1) the workpiece with high length-diameter ratio is quickly clamped by arranging the polygonal arranging groove in the tool main body and matching with the limiting rod capable of adjusting the clamping area of the polygonal arranging groove in a translation manner, so that the structure is simple and the use is convenient; (2) the connecting holes and the joint holes are connected by the joint columns, and the joint columns are locked by matching with the fixing piece, so that the height increasing module and the base module can be stably connected, the whole tool equipment is extended in the length direction of a workpiece, the clamping of the workpiece is prevented from deviating, the polygonal arrangement grooves of the base module and the height increasing module can be ensured to vertically correspond to each other, the workpiece is ensured to be vertically positioned, and the problem that the subsequent processing quality is influenced by the inclination is avoided; (3) whether the column cap is screwed into the connecting hole and screwed in place can be quickly judged by checking the matching condition of the clamping table and the countersunk groove, so that the parallelism of the height increasing module and the base module is optimized, the orthographic projection of the polygonal arrangement groove of the height increasing module is ensured to be overlapped with the orthographic projection of the polygonal arrangement groove of the base module, and the positioning consistency of the workpiece in the length direction is met; (4) the equal-height grooves of the column body correspond to the external threads of the column head, the equal-height grooves and the external threads are consistent in corresponding relation in different joint columns, an operator can quickly judge whether the joint columns are screwed to a position according to the orientation of the equal-height grooves after screwing down each joint column, the phenomenon that a certain joint column is not screwed to the position due to thread slipping and thread missing possibly can be checked, unstable connection is avoided, and the distance between the heightening module and the base module at the joint of each joint column is ensured to be consistent.

Drawings

Fig. 1 is a schematic structural diagram of the present invention in embodiment 1.

Fig. 2 is a schematic structural view of the operation lever in fig. 1.

Fig. 3 is a schematic structural view of the tool body in fig. 1.

Fig. 4 is a schematic structural diagram of the present invention in embodiment 2.

Fig. 5 is a top view of the present invention in example 2.

Fig. 6 is a schematic view of the structure of the bond post of fig. 4.

Fig. 7 is an assembly process diagram of the present invention in example 3.

Fig. 8 is a schematic structural view of the present invention in embodiment 3.

In the figure: 100. the device comprises an equipment workbench, 200, workpieces, 1, a tool main body, 2, a polygonal arrangement groove, 21, a core corner, 22, a through groove, 23, a core groove wall, 24, a clamping area, 3, a limiting rod, 31, an operating rod, 32, a bearing, 33, a handle, 4, an installation hole, 41, a locking hole, 42, a locking screw, 5, a base module, 51, a joint hole, 52, a fixing piece, 6, a heightening module, 61, a connecting hole, 62, a countersunk groove, 7, a joint column, 71, a column body, 72, a column head, 721, an external thread, 73, a threaded hole groove, 74, a clamping platform, 75, an equal-height groove, 8 and a top module.

Detailed Description

The invention is further described with reference to the following detailed description and accompanying drawings.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Example 1

As shown in fig. 1, 2 and 3, the multifunctional fast-assembling flat grinding tool is used for clamping a workpiece with a smaller length-diameter ratio, and comprises at least one layer of tool main body 1, wherein the tool main body 1 comprises a polygonal placing groove 2 arranged in the middle, the polygonal placing groove 2 comprises a core corner 21, through grooves 22 are formed in groove walls on two sides of the core corner 21, and limiting rods 3 are movably arranged in the through grooves 22; the groove wall opposite to the core corner 21 is a core groove wall 23, and the limiting rod 3 can move in the direction of the core groove wall 23 to adjust the area of the clamping area 24 of the placement groove. The core corner 21 is the clamping benchmark of the tool main body 1, when an operator moves the limiting rod 3, the limiting rod 3 translates in the through groove 22, and the position of the core corner 21 is unchanged, so that the area between the limiting rod 3 and the core corner 21 is the adjustable clamping area 24, no matter the number of the workpieces 200, the limiting rod 3 only needs to be moved until the workpieces 200 abut against the groove walls on two sides of the core corner 21, the workpiece 200 is clamped in place, the operation is convenient, the clamping efficiency is obviously improved, and the workpieces 200 to be subjected to flat grinding can be clamped for a plurality of times.

The core groove wall 23 is provided with a mounting hole 4, the mounting hole 4 is internally provided with an operating rod 31, the operating rod is perpendicular to the limiting rod 3, and the operating rod can drive the limiting rod 3 to move horizontally towards the core corner 21. A bearing 32 is arranged between the front end of the operating rod and the limiting rod 3, and the operating rod is in threaded connection with the mounting hole 4. The upper end face of the tool main body 1 is provided with a locking hole 41 corresponding to the mounting hole 4, the locking hole 41 penetrates through the mounting hole 4, a locking screw 42 is connected to the inner thread of the locking hole 41, and the locking screw 42 is screwed into the locking hole and abuts against the fixed operating rod. The handle 33 is arranged at the tail end of the operating rod, and the handle 33 is detachably connected with the operating rod.

The action bars are used for assisting operators to accurately adjust the position of the limiting rod 3, when clamping work starts, the operators twist the action bars and screw the action bars into the mounting holes 4, so that the limiting rod 3 is fed along the axial direction of the action bars, adjustment of a triangular clamping area 24 formed by the groove walls on the two sides of the limiting rod 3 and the core corner 21 is achieved, after a workpiece 200 is fixed to the clamping area 24 in a butting mode and positioned, the locking holes are locked through the locking screws 42, the locking screws 42 press against the external threads 721 of the action bars, fixation of the action bars is achieved, and determination of the clamping area 24 is guaranteed. The clamping scheme is simple to operate and high in clamping efficiency, the triangular clamping area 24 is used for ensuring that the tubular workpiece 200 with high length-diameter ratio is stably clamped, and the problem of movement of the workpiece 200 cannot occur after the locking screw 42 is fixed. An operator can select the handle 33 with a proper arm length according to the weight and the number of the workpieces 200, so that the labor is not excessively wasted when the handle 33 is rotated to push the workpieces 200 to be concentrated, and the labor intensity is reduced.

In particular, the through slots 22 extend from both sides of the core corner 21 to both sides of the core slot wall 23. No matter how many the side quantity of polygon arrangement groove 2, lead to groove 22 and must run through and set up whole frock main part 1, this kind of design can guarantee among the uncertain all kinds of clamping circumstances of work piece 200 figure, and the homoenergetic is accomplished fixedly to work piece 200, can not appear because of the work piece 200 figure is few and the unable fixed circumstances. Preferably, the polygonal placing groove 2 is of a triangular structure, which has an optimal fixing mode for the cylindrical workpiece 200, and can reduce the number of corners of the polygonal placing groove 2 in the clamping area 24 as much as possible, and the larger the number of corners is, the larger the angle of a single corner is, which undoubtedly increases the possibility of the workpiece 200 shifting.

In this embodiment, the bottom of the tool body 1 is provided with an equipment workbench 100, the equipment workbench 100 is a magnetic member, and the equipment workbench 100 can be used for fixing the tool body 1 in a suction manner.

The bottom of the equipment workbench 100 is provided with an electromagnet to control magnetism, the tool body 1 can still be fixedly connected with the equipment workbench 100 through magnetic force, the mode is most suitable for positioning the tool body 1 on a lower layer, a positioning structure is not required to be additionally arranged, and the use is convenient.

Example 2

As shown in fig. 4 and 5, different from embodiment 1, in this embodiment, the tool is used for clamping a workpiece with a medium aspect ratio, the tool main body 1 includes a base module 5 and a height module 6, the height module 6 is provided with a plurality of connecting holes 61 along a circumferential direction, a lower end face of the height module 6 is provided with a plurality of engaging posts 7 through the connecting holes 61, an upper end face of the base module 5 is provided with a plurality of engaging holes 51 corresponding to the engaging posts 7, the engaging holes 51 are provided with fixing pieces 52 upward from a bottom end, and the fixing pieces 52 penetrate through the engaging holes 51 and are connected with the engaging posts 7.

The heightening module 6 is connected with the base module 5 through the joint column 7, because the connecting hole 61 is correspondingly arranged with the joint hole 51, the joint column 7 is utilized to be connected with the connecting hole 61 and the joint hole 51, the joint column 7 is locked by the matching fixing piece 52, the stable connection of the heightening module 6 and the base module 5 can be realized, the polygonal placing groove 2 of the base module 5 and the polygonal placing groove 2 of the heightening module 6 can be ensured to be vertically corresponding, the vertical positioning of a workpiece 200 is ensured, and the subsequent processing quality is not influenced by the inclination.

Specifically, as shown in fig. 6, the coupling post 7 includes a post 71 and a post head 72 provided at one end of the post 71, and the other end of the post 71 is provided with a threaded hole 73; the stud 72 can be screwed into the coupling hole 61 of the height increasing module 6, and the fastener 52 can be coupled to the threaded hole 73. A clamping table 74 is arranged between the column head 72 and the column body 71, a countersunk groove 62 is arranged at the opening of the connecting hole 61, and the clamping table 74 can be clamped and connected with the countersunk groove 62.

The joint post 7 utilizes column cap 72 and increases module 6 to carry out the pre-connection, and rethread screw hole groove 73 is connected with the mounting 52 in the joint hole 51, has improved the location efficiency that increases module 6, ensures that the polygon mounting groove 2 that increases module 6 can correspond base module 5 fast and disposes groove 2, and the assembly is convenient, and the location is accurate. Whether the column cap 72 is screwed into the connecting hole 61 and screwed in place or not can be judged rapidly by checking the matching condition of the clamping table 74 and the countersunk groove 62, so that the parallelism of the height increasing module 6 and the base module 5 is optimized, the orthographic projection of the polygonal arrangement groove 2 of the height increasing module 6 is ensured to be overlapped with the orthographic projection of the polygonal arrangement groove 2 of the base module 5, and the positioning consistency of the workpiece 200 in the length direction is met.

In this embodiment, the equal-height groove 75 is formed on the column 71, the equal-height groove 75 of the column 71 is disposed corresponding to the external thread 721 of the column cap 72, and the equal-height groove 75 and the external thread 721 are in the same corresponding relationship in different joint columns 7. The equal-height grooves 75 can facilitate the operator to use a wrench to screw the joint columns 7 to complete the disassembly and assembly, and simultaneously, as the equal-height grooves 75 and the external threads 721 of the column heads 72 on all the joint columns 7 have the same mode, for example, the rightmost line of the equal height groove 75 of one of the coupling posts 7 is on the same vertical line with the starting point of the external thread 721 of the post head 72 of the coupling post 7, and the rightmost line of the equal height groove 75 of the other coupling post 7 is on the same vertical line with the starting point of the external thread 721 of the post head 72, in this way, after the operator tightens each coupling post 7, whether the joint columns 7 are screwed to the right position or not is judged rapidly according to the orientation of the equal-height grooves 75, the phenomenon that one joint column 7 is not screwed to the right position due to smooth wires and wrong wires which possibly exist is checked, unstable connection is avoided, and ensures that the junction of each bond post 7 is at a consistent distance from the booster module 6 to the base module 5.

Example 3

As shown in fig. 7 and 8, different from embodiments 1 and 2, in this embodiment, the tool is used for clamping a workpiece with a large length-diameter ratio, the tool main body 1 further includes a top module 8, the top module 8 has a specification consistent with that of the base module 5, and is arranged in axial symmetry with the base module 5 by taking a center line of the heightening module 6 along the height direction; the height increasing module 6 is used as a sandwich element of the top module 8 and the base module 5, the upper end surface and the lower end surface of the height increasing module 6 are both connected with the joint column 7, specifically, the upper end surface and the lower end surface of the height increasing module 6 are both in threaded connection with a column cap 72 of the joint column 7, a fixing element 52 which is screwed from top to bottom is arranged in the joint hole 51 of the top module 8, and correspondingly, a fixing element 52 which is screwed from bottom to top is also arranged in the joint hole 51 of the base module 5. The connecting structures symmetrically arranged on the upper side and the lower side of the heightening module 6 can effectively extend the clamping point positions of the flat grinding tool in the length direction of the workpiece 200. By analogy, the workpieces 200 in various height ranges can be accurately clamped by increasing the number of the height increasing modules 6 and matching the top module 8 with the bottom module.

In addition to the above embodiments, the technical features of the present invention can be re-selected and combined to form new embodiments within the scope of the claims and the specification of the present invention, which are all realized by those skilled in the art without creative efforts, and thus, the embodiments of the present invention which are not described in detail should be regarded as the specific embodiments of the present invention and are within the protection scope of the present invention.

Claims

1. A multifunctional fast-assembling flat grinding tool is characterized by comprising at least one layer of tool main body, wherein the tool main body comprises a polygonal arrangement groove arranged in the middle, the polygonal arrangement groove comprises a core corner, through grooves are formed in groove walls on two sides of the core corner, and a limiting rod is movably arranged in each through groove; the groove wall opposite to the core corner is the core groove wall, and the limiting rod can move in the direction of the core groove wall to adjust the clamping area of the placement groove.

2. The multifunctional fast-assembling flat grinding tool as claimed in claim 1, wherein a mounting hole is formed in a wall of the core slot, an operating lever is arranged in the mounting hole, the operating lever is perpendicular to the limiting rod, and the operating lever can drive the limiting rod to move in a translational manner towards a core corner direction.

3. The multifunctional fast-assembling flat grinding tool as claimed in claim 2, wherein a bearing is arranged between the front end of the operating rod and the limiting rod, and the operating rod is in threaded connection with the mounting hole.

4. The multifunctional fast-assembling flat grinding tool as claimed in claim 2, wherein a locking hole is formed in a position, corresponding to the mounting hole, of the upper end face of the tool main body, the locking hole penetrates through the mounting hole, a locking screw is connected to the locking hole through a thread, and the locking screw is screwed into the locking hole and abuts against the operating rod.

5. The multifunctional fast-assembling flat grinding tool as claimed in claim 2, wherein a handle is arranged at the tail end of the operating rod, and the handle is detachably connected with the operating rod.

6. The multifunctional fast-assembling flat grinding tool of claim 1 is characterized in that an equipment workbench is arranged at the bottom of the tool main body, the equipment workbench is a magnetic part, and the equipment workbench can be used for sucking and fixing the tool main body.

7. The multifunctional fast-assembling flat grinding tool as claimed in any one of claims 1 to 6, wherein the tool main body comprises a base module and a heightening module, the heightening module is circumferentially provided with a plurality of connecting holes, the lower end face of the heightening module is provided with a connecting post through the connecting holes in a connecting manner, the upper end face of the base module is provided with a plurality of engaging holes corresponding to the connecting post, the engaging holes are provided with fixing members upward from the bottom end, and the fixing members penetrate through the engaging holes and are connected with the connecting post.

8. The multifunctional fast-assembling flat grinding tool as claimed in claim 7, wherein the joint column comprises a column body and a column head arranged at one end of the column body, and a threaded hole groove is formed at the other end of the column body; the column cap is provided with external threads, the column cap can be in threaded connection with a connecting hole of the heightening module, and the fixing piece is connected with the threaded hole groove.

9. The multifunctional fast-assembling flat grinding tool as claimed in claim 8, wherein a clamping table is arranged between the column head and the column body, a countersunk groove is arranged at the orifice of the connecting hole, and the clamping table can be connected with the countersunk groove in a clamping manner.

10. The multifunctional fast-assembling flat grinding tool as claimed in claim 8, wherein the column body is provided with equal-height grooves, the equal-height grooves of the column body are arranged corresponding to the external threads of the column cap, and the equal-height grooves and the external threads are in consistent corresponding relation in different joint columns.