CN216542699U - Polishing cutter - Google Patents

Abstract

The application discloses polishing cutter includes: the cutter comprises a cutter handle component and a cutter head component, wherein the cutter handle component is used for being connected with a rotatable or movable power source; the tool bit assembly is connected to the tool handle assembly and comprises a tool bit main body and a clamp, the clamp is detachably mounted on the tool bit main body to clamp or loosen a flexible polishing piece, and the polishing piece forms a polishing surface for polishing the surface of a product in a clamping state. The polishing tool can be used for polishing the surface of a product, and in the polishing process, the polishing part is used for polishing the surface of the product, so that grinding wheel grains generated in machining can be removed, and the working efficiency is improved; compared with manual polishing treatment, the consistency and the polishing quality of product surface polishing can be improved.

Description

Polishing cutter

Technical Field

The application relates to the technical field of surface processing equipment, in particular to a polishing cutter.

Background

Among the prior art, when the surface to the stainless steel product is polished through the emery wheel, the phenomenon that the grit can appear falling by oneself after the cutting force descends on the emery wheel, the sand grain that drops can block up on the gas pocket of emery wheel, lead to the emery wheel passivation, easily cause the emery wheel line to appear on the product surface, the appearance of emery wheel line seriously influences product appearance, can not satisfy the requirement of customer to product appearance, the emery wheel line also can cause serious influence to the use sense of touch of product simultaneously, reduce product feel. And the grinding wheel lines are not easy to remove, and the efficiency of manually removing the grinding wheel lines is lower.

In summary, how to remove the grinding wheel pattern efficiently is a problem to be solved by those skilled in the art.

Disclosure of Invention

In view of this, an object of the present application is to provide a polishing tool, which can clamp and fix a polishing member to a tool bit body during use, form a polishing surface on the polishing member in a clamped state, and mount the polishing tool on a rotating or moving power source, so as to polish the surface of a product, remove the grinding wheel pattern on the surface of the product, and remove the grinding wheel pattern on the surface of the product with high efficiency compared to the prior art.

In order to achieve the above purpose, the present application provides the following technical solutions:

a polishing tool, comprising:

a tool shank assembly for connection to a rotatable or movable power source;

the tool bit assembly is connected to the tool handle assembly and comprises a tool bit main body and a clamp, the clamp is detachably mounted on the tool bit main body to clamp or loosen a flexible polishing piece, and the polishing piece is provided with a polishing surface used for polishing the surface of a product in a clamping state.

Optionally, the clamp includes two clamping portions, and the two clamping portions are respectively disposed on two opposite sides of the tool bit main body and are respectively used for clamping two ends of the polishing member to the tool bit main body.

Optionally, the clamping part comprises a profiling pressing block and a jacking piece, the jacking piece is movably arranged on the cutter head main body, the profiling pressing block is positioned between the jacking piece and the cutter head main body, and the jacking piece is used for pushing the profiling pressing block to jack the polishing piece to the cutter head main body;

the tool bit main body is provided with a groove used for being matched with the profiling pressing block.

Optionally, the profiling pressing block comprises a first profiling pressing block and a second profiling pressing block, in the polishing member clamping state, the first profiling pressing block and the second profiling pressing block are located on the same side of the polishing surface, and the second profiling pressing block is closer to the polishing surface than the first profiling pressing block;

the jacking piece comprises a first jacking piece matched with the first profiling pressing block and a second jacking piece matched with the second profiling pressing block.

Optionally, the inner side surfaces of the first groove and the second groove are both cambered surfaces.

Optionally, the tool bit main body comprises a main body part and an outer frame support arranged on the periphery of the main body part; the profiling pressing block and the jacking piece are movably arranged on the outer frame bracket;

the outer frame support is provided with a reset elastic piece for resetting the copying press block, one end of the reset elastic piece is abutted against the copying press block, and the other end of the reset elastic piece is abutted against the outer frame support;

and when the profiling pressing block is in a pressing position, the reset elastic piece is in a compressed state.

Optionally, the top fastening piece is a bolt in threaded connection with the outer frame support, and one end of the bolt facing the main body part abuts against the profiling pressing block.

Optionally, the outer frame support is provided with a guide groove matched with the copying press block, and the copying press block is movably arranged in the guide groove along the depth direction of the guide groove.

Optionally, the tool holder assembly comprises a housing, an inner bushing disposed within the housing, and an elastic compression portion compressible in an axial direction of the inner bushing, the tool bit assembly being fixedly connected to the inner bushing;

one end of the elastic compression part is abutted against the inner lining, and the other end of the elastic compression part is abutted against the shell.

Optionally, the lateral clearance of the inner bushing to the outer shell is less than or equal to 0.01 mm.

In the process of using the polishing tool provided by the application, firstly, a flexible polishing piece needs to be clamped and fixed by a clamp, and a polishing surface is formed by the polishing piece in a clamped state; then mounting the tool bit assembly to the tool shank assembly and mounting the entire polishing tool to a source of rotational or moving power; the action of the polishing cutter is controlled by the power source, so that the surface of the product can be polished.

Compared with the prior art, the polishing tool provided by the application can be used for polishing the surface of a product, and in the polishing process, the polishing part is used for polishing the surface of the product, so that the grinding wheel grains on the surface of the product can be removed efficiently; compared with manual polishing treatment, the consistency and the polishing quality of product surface polishing can be improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic diagram of a polishing tool according to an embodiment of the present application;

FIG. 2 is a front view of the polishing tool of FIG. 1;

FIG. 3 is a side view of the polishing tool of FIG. 1;

FIG. 4 is a schematic view of the polishing tool of FIG. 3 with a portion of the housing support removed;

FIG. 5 is a schematic diagram of a particular embodiment of a cutter head assembly;

FIG. 6 is a schematic view of the tool bit assembly of FIG. 5 with portions of the frame support removed;

FIG. 7 is an exploded view of the cutter head assembly of FIG. 6;

FIG. 8 is a front view of the tool head assembly of FIG. 7 with the polishing element removed;

FIG. 9 is a schematic view of the polishing member clamped by the bit assembly of FIG. 5;

FIG. 10 is a front view of the polishing element of FIG. 9;

FIG. 11 is a schematic view of a particular embodiment of a cutter head assembly provided herein;

FIG. 12 is a front view of the cutter head assembly of FIG. 11;

fig. 13 is a schematic sectional view taken along the direction a-a in fig. 12.

In fig. 1-13:

1 is a tool shank component, 11 is a shell, 12 is an inner bushing, 13 is an elastic compression part, 14 is an adjusting nut, 15 is a fixing part, 2 is a tool bit component, 2a is a clamp, 2b is a clamping part, 21 is a profiling pressing block, 211 is a first profiling pressing block, 212 is a second profiling pressing block, 22 is a jacking piece, 221 is a first jacking piece, 222 is a second jacking piece, 23 is a tool bit main body, 231 is a main body part, 2311 is a groove, 232 is an outer frame bracket, 2321 is a guide groove, 2322 is a resetting elastic piece, 24 is a tool bar, 3 is a polishing piece, and 4 is a polishing surface.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The core of this application is to provide a polishing cutter, can carry out the centre gripping to polishing to make polishing under clamping state form the polishing face that is used for polishing product surface, polishing cutter moves under the drive of the power supply of rotation or removal, realizes the polishing to product surface, improves the processingquality on product surface.

Please refer to fig. 1 to fig. 13.

As shown in fig. 1, 2, and 3, the present embodiment discloses a polishing tool, including:

a tool shank assembly 1 for connection to a rotatable or movable power source;

and the tool bit assembly 2 is connected to the tool shank assembly 1, the tool bit assembly 2 comprises a tool bit main body 23 and a clamp 2a, the clamp 2a is detachably mounted on the tool bit main body 23 to clamp or release the polishing piece 3, and the polishing piece 3 is provided with a polishing surface 4 for polishing the surface of a product in a clamping state.

It should be noted that the polishing member 3 mentioned in this embodiment is a flexible polishing member, for example, the polishing member 3 is a sheet-like sandpaper, an abrasive cloth, etc., and of course, other polishing products may be used, depending on the actual situation.

In the process of using the polishing tool provided by the present embodiment, firstly, the flexible polishing member 3 needs to be clamped and fixed by the clamp 2a, and the polishing surface 4 is formed when the polishing member 3 is clamped; for example, the polishing member 3 is waterproof sandpaper, and forms a sandpaper surface for polishing in a clamped state; then mounting the tool bit assembly 2 to the tool shank assembly 1 and mounting the entire polishing tool to a source of rotational or translational power; the action of the polishing cutter is controlled by the power source, so that the surface of the product can be polished. The power source mentioned in the embodiment may be a related power structure in a machine tool, or a related power structure in a surface treatment device, which is determined according to actual conditions.

Compared with the prior art, the polishing tool provided by the embodiment can be used for polishing the surface of a product, sand paper is used for polishing the surface of the product in the polishing process, sand grains falling from the polishing piece 3 can flow away along with cutting fluid, the surface of the product is prevented from being scratched by the sand grains, grinding wheel grains generated by processing can be removed, and the working efficiency is improved; compared with manual polishing treatment, the consistency and the polishing quality of product surface polishing can be improved.

As shown in fig. 3 to 8, in a specific embodiment, when the polishing member 3 is a flexible polishing member, during the clamping process, the flexible polishing member 3 needs to be tensioned and fixed to ensure the flatness of the polishing surface 4; two clamping portions 2b may be provided, the two clamping portions 2b being respectively provided at opposite sides of the bit body 23 for clamping both ends of the flexible polishing member 3 to the bit body 23; after the two ends of the flexible polishing piece 3 are respectively clamped and fixed, the polishing surface 4 of the polishing piece 3 can be tensioned, and the flatness of the polishing surface 4 can be guaranteed.

In addition, at an angle shown in fig. 5, the two clamping portions 2b may be provided in the front-rear direction or the left-right direction of the head main body 23, and the polished surface 4 may be formed on the left side, the right side, or the lower side of the head main body 23; the method is determined according to actual conditions.

The clamping part 2b can be a clamping jaw type structure which can be opened and closed, can also be a sliding block type structure which can be relatively close to or far away from, and can also be other structures meeting the requirement; in the process of clamping the polishing element 3, the polishing element 3 can be manually clamped, or the polishing element 3 can be automatically clamped through related automatic equipment, which is determined according to actual conditions.

In the embodiment, the two clamping parts 2b are arranged, so that the flexible polishing piece 3 can be fixed, and the fixing reliability of the polishing piece 3 is improved; in addition, the polishing piece 3 is clamped by two ends of the polishing piece, so that the operation is convenient, and the tensioning degree of the polishing surface 4 is easy to grasp in the clamping process.

In a specific embodiment, as shown in fig. 7, the clamping portion 2b includes a copying press block 21 and a tightening member 22, the copying press block 21 is movably disposed on the tool bit main body 23 in a direction of clamping the polishing member 3, and the tightening member 22 is movably disposed on the tool bit main body 23 and is used for pushing the copying press block 21 to tighten the polishing member 3 against the tool bit main body 23; the bit body 23 is provided with a groove 2311 for mating with the profiling compact 21.

In the process of clamping the polishing element 3, when the polishing element 3 is a flexible polishing element, the polishing element 3 may be bent first, as shown in fig. 9 and 10, the polishing element 3 may be bent into a U shape, one side of the U-shaped polishing element 3 is clamped to the tool bit body 23 by one of the clamping portions 2b, and the other side of the U-shaped polishing element 3 is clamped to the tool bit body 23 by the other clamping portion 2 b; of course, the polishing member 3 may be bent into other shapes as required by the actual fixing manner. During clamping, the tightening member 22 pushes the profiling pressing block 21 to press the polishing member 3 into the groove 2311 of the cutter head main body 23 until the polishing surface 4 of the polishing member 3 is tensioned.

The shape of the groove 2311 needs to be matched with the copying press block 21, so that the polishing piece 3 is conveniently clamped, and the polishing piece 3 is prevented from being broken and the like in the clamping process, as shown in fig. 7, one side, facing the tool bit main body 23, of the copying press block 21 can be set to be an arc surface, and the groove 2311 is set to be a groove with the arc surface; further, an arc-shaped chamfer may be provided at the edge of the groove 2311 to avoid cutting or severing the polishing member 3.

The tightening member 22 mentioned in this embodiment may be a bolt-like structure, which is pushed to move the copying press block 21 by converting a rotational motion into an axial motion, or a slider-like structure, which is pushed to move by a power component and pushed to push the copying press block 21 to move in the moving process; the profiling pressing block 21 can be made of metal materials or plastic materials with low hardness, and is determined according to actual conditions.

In this embodiment, through the cooperation of profile modeling briquetting 21 and puller 22, alright with can be tight and fixed to tool bit main part 23 in the top with polishing piece 3, and tool bit main part 23 is provided with recess 2311, in the in-process of pressing from both sides tight fixed polishing piece 3, can push up tight fixed to recess 2311 with partial polishing piece 3 in, make polishing piece 3 produce the deformation similar with recess 2311 shape, and the bending appears, thereby make polishing piece 3's fixed more firm, the reliability further improves, polishing piece 3 appears not hard up condition under high-speed friction in the polishing process has been avoided.

In one embodiment, as shown in fig. 6 and 7, the profiling compact 21 comprises a first profiling compact 211 and a second profiling compact 212, and in the clamped state of the polishing member 3, the first profiling compact 211 and the second profiling compact 212 are located on the same side of the polishing surface 4, and the second profiling compact 212 is closer to the polishing surface 4 than the first profiling compact 211; top member 22 includes a first top member 221 that cooperates with first profiling block 211 and a second top member 222 that cooperates with second profiling block 212; as shown in fig. 7, grooves 2311 include a first groove that mates with first profiling feature 211 and a second groove that mates with second profiling feature 212.

The first groove and the second groove are both grooves with cambered surfaces.

In this embodiment, when clamping and fastening the polishing member 3, the first tightening parts 221 on both sides may respectively push the first profiling pressing blocks 211 on both sides to move in the direction of clamping the polishing member 3, and pre-clamp both ends of the polishing member 3, after the two first profiling pressing blocks 211 clamp both ends of the polishing member 3, the polishing surface 4 of the polishing member 3 may not be completely tensioned, and the second tightening parts 222 on both sides may further respectively push the second profiling pressing blocks 212 on both sides to move in the direction of clamping the polishing member 3, until the polishing surface 4 of the polishing member 3 is tensioned to a desired state.

Set up two sets of clamping parts 2b along the extending direction of polishing piece 3, can realize pressing from both sides tightly polishing piece 3's secondary to guarantee that polishing piece 3's polishing face 4 is by complete tensioning, and can reserve certain tight allowance of clamp, reduce the required precision to polishing piece 3 size, mounted position.

In one embodiment, the cutter head main body 23 includes a main body 231 and an outer frame support 232 disposed at the periphery of the main body 231; the profiling pressing block 21 and the jacking piece 22 are movably arranged on the outer frame support 232; the outer frame support 232 is provided with a resetting elastic member 2322 for resetting the copying press block 21, one end of the resetting elastic member 2322 is abutted against the copying press block 21, and the other end is abutted against the outer frame support 232; and when the profiling pressing block 21 is in the pressing position, the resetting elastic piece 2322 is in a compressed state. As shown in fig. 5, the outer frame support 232 is provided with a guide groove 2321 engaged with the copying press block 21, and the copying press block 21 is movably disposed in the guide groove 2321 along the depth direction of the guide groove 2321.

It should be noted that, the top member 22 may be movably disposed on the outer frame support 232 along the moving direction of the profiling pressing block 21, and in the using process, the movement of the top member 22 may directly push the profiling pressing block 21 to move toward the direction of pressing the polishing member 3; the preload part 22 can also be movably arranged on the outer frame bracket 232 along the direction perpendicular to the moving direction of the copying press block 21, and the preload part 22 is contacted with the copying press block 21 through an inclined surface, so that when the preload part 22 moves in the using process, the copying press block 21 is pushed to move towards the direction of pressing the polishing part 3 through the inclined surface; of course, the moving direction of the tightening member 22 may be other directions according to requirements, and the installation manner of the tightening member 22 may also be other manners according to requirements, which is determined according to actual conditions.

As shown in fig. 5, the main body 231 is a rectangular or square body, the upper portion of the main body 231 is provided with the tool bar 24, four peripheral side surfaces of the main body 231 correspond to one of the plate-shaped structures of the outer frame support 232, in the direction shown in fig. 5, the front side surface and the rear side surface of the main body 231 are respectively provided with a first plate-shaped structure, the left side surface and the right side surface are respectively provided with a second plate-shaped structure, the first plate-shaped structure and the second plate-shaped structure are sequentially connected end to form an annular frame, and the first plate-shaped structure is connected to the main body 231; one end of the elastic resetting member 2322 is fixed to the first plate-shaped structure, the other end is connected to the profiling pressing block 21, and the elastic resetting member 2322 may be a spring; the second plate-shaped structure is provided with a threaded hole, the tightening part 22 is a bolt matched and connected with the threaded hole of the second plate-shaped structure, and one end of the bolt facing the main body 231 is abutted against the profiling pressing block 21.

In this embodiment, as shown in fig. 6, when the polishing member 3 needs to be clamped, first, the polishing member 3 needs to be folded into a U shape, two sides of the U shape are respectively inserted between the profiling pressing blocks 21 and the main body 231 at two sides, the first pre-tightening members 221 at two sides located at the upper part are respectively screwed, the first profiling pressing block 211 is pushed to move along the guide slot 2321, and the polishing member 3 is pre-clamped; then, the second preload pieces 222 at the two sides and the lower part are respectively screwed, the second profiling pressing block 212 is pushed to move along the guide groove 2321 and clamp the polishing piece 3 until the polishing surface 4 is tensioned and fixed, and the resetting elastic piece 2322 is compressed in the process that the profiling pressing block 21 clamps the polishing piece 3; when the polishing element 3 needs to be replaced, the preload pieces 22 on the two sides can be respectively screwed to the loosening position, and under the action of the elastic force of the reset elastic piece 2322, the profiling pressing piece 21 moves along the guide slot 2321 in the direction away from the main body 231, and is disengaged from the groove 2311 in the main body 231, so that the polishing element 3 is loosened.

As shown in fig. 5, the outer frame support 232 is provided with a guide groove 2321, the profiling pressing block 21 is located in the guide groove 2321, and the depth direction of the guide groove 2321 is perpendicular to the outer peripheral side surface of the main body 231, so that the polishing element 3 can be pressed against the main body 231 or the polishing element 3 can be released during the movement of the profiling pressing block 21 along the guide groove 2321.

It should be noted that the outer frame support 232 and the main body portion 231 in this embodiment may be an integral structure or a detachably connected structure, which is determined according to actual situations.

The arrangement of the outer frame bracket 232 enables the installation of the preload part 22 and the copying press block 21 to be more convenient, and the guide groove 2321 can limit the moving direction of the copying press block 21 so as to ensure the consistency of the clamping force direction for clamping the polishing part 3; the arrangement of the resetting elastic piece 2321 enables the copying press block 21 to reset automatically, and simplifies the resetting process of the polishing piece 3 after loosening.

In one embodiment, as shown in fig. 11 to 13, the tool shank assembly 1 comprises a housing 11, an inner bushing 12 disposed inside the housing, and an elastic compression portion 13 compressible in an axial direction of the inner bushing 12, the tool bit assembly 2 being fixedly connected to the inner bushing 12; one end of the elastic compression portion 13 abuts against the inner liner 12, and the other end abuts against the outer shell 11.

As shown in fig. 13, the outer casing 11 is sleeved on the outer periphery of the inner bushing 12, an installation groove for installing the elastic compression portion 13 is formed in the inner bushing 12, the elastic compression portion 13 includes a spring and a support rod, one end of the support rod, which abuts against the inner bushing 12, is sleeved with an adjusting nut 14, the adjusting nut 14 is fixedly arranged at one end of the support rod, the other end of the support rod abuts against one end of the spring, the other end of the spring abuts against the outer casing 11, and the support rod is rotatably arranged in the inner bushing 12; the periphery of the adjusting nut 14 is provided with external threads, the inner bushing 12 is provided with a threaded hole matched with the adjusting nut 14, the adjusting nut 14 is provided with an inner hexagonal hole convenient to adjust, and the compression degree of the spring can be adjusted by screwing the adjusting nut 14, so that the spring force is adjusted.

As shown in fig. 13, the inner bush 12 is provided with a fixing portion 15 for fixing the cutter bar 24 so that the cutter head assembly 2 can rotate in synchronization with the holder assembly 1 after being mounted on the holder assembly 1.

In the process of performing surface treatment on a product by using the polishing tool provided by the embodiment, because the inner bushing 12 can move axially relative to the housing 11, the tool bit assembly 2 can move axially relative to the tool holder assembly 1 in the machining process, so that the polishing surface 4 can be effectively prevented from being in hard contact with the product to cause over-polishing and edge collapse, and the polishing quality is further improved.

Preferably, the elastic compression stroke of the elastic compression portion 13 is 1 mm.

In another embodiment, the lateral clearance between the inner bushing 12 and the outer shell 11 is less than or equal to 0.01mm, so that the inner bushing 12 and the outer shell 11 rotate synchronously during the rotation of the outer shell 11, and the deflection of the inner bushing 12 during the rotation is within 0.01mm, thereby effectively ensuring the length and width of the polished surface of the product.

The references to first and second urging members 221 and 222, first and second copying press blocks 211 and 212, and first and second in the first and second plate-like structures are merely for distinguishing the difference in position and are not in order.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. Any combination of all embodiments provided by the present application is within the scope of the present invention, and is not described herein.

The polishing tool provided by the present application is described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.

Claims (10)

1. A polishing tool, comprising:

a tool shank assembly (1) for connection to a rotatable or movable power source;

the tool bit assembly (2) is connected to the tool handle assembly, the tool bit assembly (2) comprises a tool bit main body (23) and a clamp (2a), the clamp (2a) is detachably mounted on the tool bit main body (23) to clamp or release the flexible polishing piece (3), and the polishing piece (3) is provided with a polishing surface (4) used for polishing the surface of a product in a clamping state.

2. The polishing tool as set forth in claim 1, wherein the holder (2a) includes two clamping portions (2b), the two clamping portions (2b) being provided on opposite sides of the head body (23), respectively, for clamping both ends of the polishing member (3) to the head body (23), respectively.

3. The polishing tool as set forth in claim 2, characterized in that the clamping portion (2b) includes a copying press block (21) and a tightening member (22), the tightening member (22) being movably provided to the head body (23), the copying press block (21) being located between the tightening member (22) and the head body (23), the tightening member (22) being for urging the copying press block (21) against the polishing member (3) to the head body (23);

the bit body (23) is provided with a plurality of grooves (2311) for cooperation with the profiling pressing block (21).

4. A polishing tool according to claim 3, characterized in that the copying press block (21) comprises a first copying press block (211) and a second copying press block (212), which first copying press block (211) and second copying press block (212) are fixed in the respective recesses in the clamped state of the polishing element (3), which second copying press block (212) is closer to the polishing surface (4) than the first copying press block (211);

the tightening member (22) comprises a first tightening member (221) cooperating with the first copying press block (211) and a second tightening member (222) cooperating with the second copying press block (212).

5. The polishing tool as set forth in claim 4 wherein the inner sides of the first and second grooves are both arcuate concave surfaces and the first and second copying compacts (211, 212) include arcuate convex surfaces that conform to the arcuate concave surfaces.

6. The polishing tool as set forth in claim 3, wherein the head main body (23) includes a main body portion (231) and an outer frame bracket (232) provided at an outer periphery of the main body portion (231); the profiling pressing block (21) and the jacking piece (22) are movably arranged on the outer frame bracket (232);

the outer frame support (232) is provided with a resetting elastic piece (2322) for resetting the copying press block (21), one end of the resetting elastic piece (2322) is abutted against the copying press block (21), and the other end of the resetting elastic piece is abutted against the outer frame support (232);

and when the profiling pressing block (21) is positioned at the pressing position, the resetting elastic piece (2322) is in a compressed state.

7. The polishing tool as set forth in claim 6, characterized in that the tightening member (22) is a bolt screwed with the outer frame bracket (232), and an end of the bolt facing the main body portion (231) abuts against the copying press block (21).

8. The polishing tool as set forth in claim 6, wherein the outer frame bracket (232) is provided with a guide groove (2321) engaged with the copying press block (21), and the copying press block (21) is movably disposed in the guide groove (2321) in a depth direction of the guide groove (2321).

9. The burnishing tool of any one of claims 1 to 8, wherein the shank assembly (1) comprises a housing (11), an inner sleeve (12) disposed within the housing (11), and a resilient compression portion (13) compressible in an axial direction of the inner sleeve (12), the bit assembly (2) being fixedly connected to the inner sleeve (12);

one end of the elastic compression part (13) is abutted against the inner bushing (12), and the other end is abutted against the outer shell (11).

10. The polishing tool as set forth in claim 9, characterized in that the lateral clearance with which the inner bushing (12) cooperates with the outer housing (11) is less than or equal to 0.01 mm.

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