CN214489695U - Processing tool - Google Patents

Abstract

The utility model relates to a processing frock technical field discloses a processing frock, include: a base and a positioning seat; the base is provided with at least two first positioning parts; the positioning seat is provided with at least two second positioning parts which are matched and positioned with the first positioning parts one by one, the positioning seat can rotate around the base between at least two processing positions and is locked at the processing positions, and when the positioning seat rotates to the processing positions, at least one second positioning part on the positioning seat is matched and positioned with at least one first positioning part on the base. The utility model discloses guarantee the quality of part chamfer closed slot processing, effectively improved machining efficiency.

Description

Processing tool

Technical Field

The utility model relates to a processing frock technical field especially relates to a processing frock.

Background

As shown in fig. 12-16, in the component 10, it is necessary to cut a closed groove 1001 penetrating through the upper and lower ends of the surface of the component, and to process a chamfer 1002 at a certain angle at both ends of the closed groove 1001, in order to ensure that the surface roughness of the component and the width of the groove are within 1.36+ 0.05/-0.02, the currently adopted processing method includes:

1) the precision of a machined part can be ensured by one-step forming by adopting a five-axis cutting machine tool with a large rotation angle, but the method has very high equipment cost and examines the technical level of technicians

2) Adopts the following steps: a. firstly, processing a section of straight groove; b. processing a section of chamfer of 62 degrees; c. processing the last section of chamfer angle of 62 degrees; however, this method has the following disadvantages:

a. the dimensional accuracy of the part is difficult to ensure to be 1.36 plus 0.05/-0.02 and the angle is 45 +/-0.5 degrees;

b. the clamping error, the mechanical error and the surface defect and the size deviation caused by the human error which are generated by multiple processes are difficult to ensure;

c. the clamping time and the line changing time of the adjusting machine caused by multiple processes easily cause the efficiency to be lower and occupy more equipment.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: compared with the step-by-step processing, the processing tool can avoid the bad quality phenomenon caused by secondary clamping and mechanical coordinate error, remarkably improves the quality stability of the processed part, effectively improves the processing efficiency and saves the equipment resource; compared with the five-axis cutting machine tool with a large rotation angle, the equipment using cost is obviously reduced.

In order to achieve the above object, the utility model provides a processing tool, include: a base and a positioning seat; the base is provided with at least two first positioning parts; the positioning seat is provided with at least two second positioning parts which are matched and positioned with the first positioning parts one by one, the positioning seat can rotate around the base between at least two processing positions and is locked at the processing positions, and when the positioning seat rotates to the processing positions, at least one second positioning part on the positioning seat is matched and positioned with at least one first positioning part on the base.

In some embodiments, the base comprises: a mounting seat and a supporting block; the supporting block is arranged on one side surface of the mounting seat; the positioning seat is arranged on the same side face of the mounting seat and is positioned at the top of the supporting block; the top of the supporting block is provided with a first positioning surface, the bottom of the positioning seat is provided with a second positioning surface which is matched and abutted against the first positioning surface, the first positioning surface is limited to form one of the first positioning parts, and the second positioning surface is limited to form one of the second positioning parts.

In some embodiments, a rotating part is arranged at the bottom of the positioning seat, and a rotating part which is matched with the rotating part to rotate is arranged on the supporting block; the mounting seat is provided with a first positioning hole, the positioning seat is provided with a second positioning hole matched and positioned with the first positioning hole, the first positioning hole is limited to form one of the first positioning parts, the second positioning hole is limited to form one of the second positioning parts, and a positioning part is connected between the first positioning hole and the second positioning hole.

In some embodiments, the positioning device includes two first positioning surfaces and two second positioning surfaces corresponding to the first positioning surfaces, and the two first positioning surfaces are respectively disposed on two sides of the rotation position.

In some embodiments, the two first positioning planes are symmetrically distributed on two sides of the rotation position.

In some embodiments, the rotating portion is a slot formed through a top surface of the support block.

In some embodiments, the positioning seat is provided with a first through groove penetrating through the upper end and the lower end of the positioning seat and communicating with the clamping seat.

In some embodiments, the positioning seat includes a supporting surface for supporting the part to be processed, a supporting plate is disposed at a lower end of the supporting surface, pressing plates are disposed on two sides of the supporting surface, and the supporting surface, the two pressing plates, and the supporting plate define the clamping position.

In some embodiments, the base is provided with a second through groove penetrating through the base, the positioning seat is provided with a first connection hole matched with the second through groove, a rotating shaft is installed between the second through groove and the first connection hole, and the positioning seat is rotatably connected with the base around the rotating shaft.

In some embodiments, the base is provided with a third through groove penetrating through the base, the positioning seat is provided with a second connecting hole corresponding to the third through groove, the cross section of the third through groove is arc-shaped with the rotation axis of the positioning seat as the center of a circle, and a fastener is installed between the third through groove and the second connecting hole.

In some embodiments, the clamping position is provided with a mounting hole, and a magnet for adsorbing a part to be processed is arranged in the mounting hole.

A processing method of a chamfer closed groove uses the processing tool, a first through groove penetrating through the upper end and the lower end of a positioning seat is formed in a clamping position, and the processing method comprises the following steps:

clamping a part to be processed to the clamping position of the positioning seat;

forming a through hole in the middle of a region to be processed on the part, sequentially penetrating a molybdenum wire through the through hole and the first through groove, locking the positioning seat to a processing position, and processing a straight groove on the part through the molybdenum wire;

and rotating the positioning seat and locking to the other processing position, and processing a chamfer on one side of the straight groove through the molybdenum wire.

The utility model provides a processing frock compares with prior art, and its beneficial effect lies in: the processing method comprises the following steps that a part to be processed is placed on a clamping position of a positioning seat, the clamping position is matched with a supporting plate to fix the part, after a straight groove is processed on the part, the positioning seat rotates relative to a base, when a second positioning surface at the bottom of the positioning seat is abutted against any first positioning surface of a supporting block, the part is chamfered by the position of the fixing positioning seat, chamfering is completed on one side, and chamfering processing on the other side is performed on the other side, the part does not need to be dismounted in the processing process, a tool does not need to move, the straight groove and chamfering processing of the part can be completed only by controlling the rotation of the positioning seat, the quality stability of a processed product is remarkably improved, the processing efficiency is also remarkably improved, and the equipment cost is also reduced; furthermore, the rotating shaft is arranged between the positioning seat and the mounting seat, so that the positioning seat can rotate relative to the mounting seat, and meanwhile, the position of the positioning seat is locked through the fastening piece, so that a part mounted on the positioning seat is ensured to be stable during processing, and the processing quality is ensured; through the inclination angle design to two first locating surfaces of holding surface inclination and supporting shoe to the parts machining of different processing demands of matching, the application is wider.

Drawings

FIG. 1 is an assembly diagram of the overall structure of the present invention;

fig. 2 is an exploded view of the overall structure of the present invention;

FIG. 3 is a schematic view of the assembly of the tool and the parts of the present invention;

fig. 4 is a schematic view of the base structure of the present invention;

FIG. 5 is a schematic view of the connection plate structure of the present invention;

fig. 6 is a front view of the positioning seat structure of the present invention;

fig. 7 is a side view of the positioning seat structure of the present invention;

FIG. 8 is a schematic view of the supporting block structure of the present invention;

FIG. 9 is a first schematic view of the processing of the present invention;

FIG. 10 is a second schematic view of the processing procedure of the present invention;

FIG. 11 is a third schematic view of the processing procedure of the present invention;

fig. 12 is a schematic view of the finished part of the present invention;

FIG. 13 is a schematic view of the finished parts of the present invention;

FIG. 14 is an elevation view of the finished part of the present invention;

FIG. 15 is a cross-sectional view taken at line A-A of FIG. 14;

fig. 16 is a cross-sectional view at fig. 15B-B.

In the figure, 110, the base; 120. a mounting seat; 1. a first connecting plate; 101. a top plate; 102. a middle plate; 103. a base plate; 104. a first step surface; 105. a second step surface; 2. a second connecting plate; 3. positioning seats; 301. a first through groove; 302. a support plate; 303. pressing a plate; 304. mounting holes; 305. a rotating part; 306. a support surface; 307. a second positioning surface; 4. a support block; 401. rotating; 402. a first positioning surface; 5. a magnet; 6. a screw; 7. a positioning column; 8. a rotating shaft; 9. a fastener; 10. a part; 1001. closing the groove; 1002. chamfering; 11. a third positioning hole; 12. a first fixing hole; 13. a second fixing hole; 14. a fourth positioning hole; 15. a first positioning hole; 16. a third through groove; 17. a second through groove; 18. a sixth connection hole; 19. a second positioning hole; 20. a second connection hole; 21. a first connection hole; 22. a fourth connection hole; 23. a fifth connecting hole; 24. molybdenum wire; 25. a positioning member.

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.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

As shown in fig. 1-3, a machining tool according to some embodiments of the present application includes: a base 110 and a positioning seat 3; at least two first positioning parts are arranged on the base 110; a clamping position for clamping a part 10 to be processed is defined on the positioning seat 3, at least two second positioning portions which are matched and positioned with the first positioning portions one by one are arranged on the positioning seat 3, the positioning seat 3 can rotate around the base 110 between at least two processing positions and is locked at each processing position, and when the positioning seat 3 rotates to each processing position, at least one second positioning portion on the positioning seat 3 is matched and positioned with at least one first positioning portion on the base.

Based on the above scheme, the part 10 to be processed is placed on the clamping position of the positioning seat 3, when the part 10 to be processed is processed, the positioning seat 3 can rotate relative to the base 110 through the matching positioning of the first positioning part and the second positioning part, and the position of the positioning seat 3 is locked after the positioning seat 3 rotates, so that the processing of different position angles of the part 10 is realized; the part 10 does not need to be disassembled and assembled in the machining process, the tool does not need to be moved, the machining of the closed groove 1001 and the chamfer 1002 of the part 10 can be completed only by controlling the rotation of the positioning seat 3, the stability of the quality of the machined product is obviously improved, the machining efficiency is obviously improved, and meanwhile, the equipment cost is also reduced.

In some embodiments, the base 110 includes: a mounting seat 120 and a supporting block 4; the supporting block 4 is mounted on one side surface of the mounting seat 120; the positioning seat 3 is mounted on the same side surface of the mounting seat 120 and is positioned at the top of the supporting block 4; the top of the supporting block 4 is provided with a first positioning surface 402, the bottom of the positioning seat 3 is provided with a second positioning surface 307 which is matched and abutted against the first positioning surface 402, the first positioning surface 402 defines one of the first positioning parts, and the second positioning surface 307 defines one of the second positioning parts;

a rotating part 305 protruding downwards is arranged in the middle of the bottom of the positioning seat 3, the central axial direction of the rotating part 305 is perpendicular to one side surface of the mounting seat 120, and a rotating part 401 rotating in a matching manner with the rotating part 305 is arranged on the supporting block 4; a first positioning hole 15 is formed in the mounting seat 120, a second positioning hole 19 matched with the first positioning hole 15 for positioning is formed in the positioning seat 3, one of the first positioning portions is defined and formed by the first positioning hole 15, one of the second positioning portions is defined and formed by the second positioning hole 19, and a positioning element 25 is connected between the first positioning hole 15 and the second positioning hole 19; the positioning piece 25 is connected with the first positioning hole 15 and the second positioning hole 19, so that the relative positions of the mounting seat 120 and the positioning seat 3 are limited, the positioning seat 3 is ensured to be in a horizontal state before the part 10 is processed, and the part 10 placed on the clamping position is ensured to be positive, and a straight groove meeting the requirement can be processed.

Based on the above scheme, the part 10 to be processed is placed on the clamping position of the positioning seat 3, after the straight groove is processed on the part 10, the positioning seat 3 rotates relative to the mounting seat 120, the protruded rotating part 305 is arranged in the sunken rotating position 401 of the supporting block 4, the central position of the positioning seat 3 during rotation is ensured to be unchanged, when the bottom of the positioning seat 3 abuts against any first positioning surface 402 of the supporting block 4, the part 10 is chamfered by the position of the fixed positioning seat 3, after chamfering is completed on one side, the positioning seat 3 is rotated again, so that the bottom of the positioning seat 3 abuts against the other first positioning surface 402 of the supporting block 4, then chamfering on the other side is performed, the part 10 does not need to be dismounted and mounted in the processing process, the tool does not need to be moved, the processing of the straight groove and the chamfer of the part 10 can be completed only by controlling the rotation of the positioning seat 3, and the quality stability of the processed product is obviously improved, and the processing efficiency is also obviously improved, and the equipment cost is also reduced.

In some embodiments, the processing tool includes two first positioning surfaces 402 and two second positioning surfaces 307 corresponding to the first positioning surfaces 402, where the two first positioning surfaces 402 are respectively disposed on two sides of the rotating position 401; the two first positioning planes 402 are symmetrically distributed on two sides of the rotating position 401.

In some embodiments, the rotating portion 401 is a slot formed through the top surface of the supporting block 4.

In some embodiments, the specific structures of the rotating portion 305 and the rotating portion 401 may be interchanged with each other, that is, the rotating portion 305 may be a recessed groove structure, and the rotating portion 401 may be a corresponding protruding column structure.

In some embodiments, the positioning seat 3 is provided with a first through groove 301 penetrating through the upper end and the lower end thereof and communicating with the clamping seat.

In some embodiments, the positioning seat 3 includes a supporting surface 306 for supporting the part 10 to be machined, a supporting plate 302 is disposed at a lower end of the supporting surface 306, pressing plates 303 are disposed on two sides of the supporting surface 306, and the supporting surface 306, the two pressing plates 303 and the supporting plate 302 define the clamping position therebetween. Two clamp plates 303 are installed at the both ends of positioning seat 3 through standard parts such as screw 6, the layer board 302 and the holding surface 306 of the clamp plate 303 cooperation lower extreme at both ends just form a semi-enclosed centre gripping position, part 10 is placed on holding surface 306, because holding surface 306 is the slope, part 10 slopes the landing naturally, layer board 302 holds part 10, when positioning seat 3 rotates, the part 10 is lived in the fixing that the clamp plate 303 at both ends can be fine, it guarantees steady state to have guaranteed part 10 in whole course of working, the machining precision can only be ensured like this. The pressing plate 303 is provided with a third connecting hole which is connected with the bolt or the screw 6 in a matching way, the positioning seat is provided with a fourth connecting hole 22 corresponding to the third connecting hole, and the pressing plate 303 is inserted into the fourth connecting hole 22 through the bolt or the screw 6 and then fixed on two sides of the supporting surface 306.

In some embodiments, the base 110 is provided with a second through groove 17 penetrating through the base 110, the positioning seat 3 is provided with a first connection hole 21 adapted to the second through groove 17, a rotation shaft 8 is installed between the second through groove 17 and the first connection hole 21, and the positioning seat 3 is rotatably connected to the base 110 around the rotation shaft 8; the base 110 is provided with a third through groove 16 penetrating through the base 110, the positioning seat 3 is provided with a second connecting hole 20 corresponding to the third through groove 16, the cross section of the third through groove 16 is arc-shaped with the rotation axis of the positioning seat 3 as the center of a circle, and a fastening piece 9 is installed between the third through groove 16 and the second connecting hole 20.

Based on the above solution, the rotating shaft 8 disposed between the second through slot 17 and the first connecting hole 21 is used as the center of rotation of the positioning seat 3, and the rotating shaft 8 passes through the second through slot 17 and then is inserted into the first connecting hole 21; the arc-shaped third through groove 16 is used for limiting the rotation range of the positioning seat 3, when the positioning seat 3 rotates to a certain angle relative to the mounting seat 120, the position of the second connecting hole 20 changes, which is equivalent to that the relative position of the second connecting hole 20 and the third through groove 16 changes, and the third through groove 16 and the second connecting hole 20 are locked by the fastening piece 9, so that the position of the positioning seat 3 is locked.

In some embodiments, the clamping position is provided with a mounting hole 304, and a magnet 5 for attracting a part to be processed is arranged in the mounting hole 304. When the part 10 to be machined is a metal part, the magnet 5 is placed in the mounting hole 304, the magnet 5 needs to have strong magnetism, the part 10 can be adsorbed on the clamping position, the situation that the part 10 is adsorbed on the clamping position all the time without deflection and the like can be guaranteed in the machining process, and machining precision is guaranteed.

The sum of the inclination angle a of the two first positioning surfaces 402 of the supporting block 4 and the rotation angle of the positioning seat 3 is 90 °.

In some embodiments, the support surface 306 is inclined at an angle b of 30-60, and the first positioning surfaces 402 are inclined at an angle a of 20-40. The two inclination angles a and b are adjusted adaptively according to the processing requirements of the part, when the part shown in fig. 1 is processed, the inclination angle b of the supporting surface 306 is set to be 45 degrees, the angle can have an error of plus or minus 1 degree, and the inclination angle a of the first positioning surface 402 is set to be 62 degrees.

In some embodiments, as shown in fig. 8, the supporting block 4 is provided with a fifth connecting hole 23 in matching connection with the pin or screw 6, the mounting base 120 is provided with a sixth connecting hole 18 corresponding to the fifth connecting hole 23, and the supporting block 4 is inserted into the sixth connecting hole 18 through the fifth connecting hole 23 by the pin or screw 6 and then fixed on the mounting base 120.

In some embodiments, the support block 4 and the mount 120 are an integral piece.

In some embodiments, the rotating portion 305 has an arc-shaped cross-section. The rotating part 305 is arranged in the rotating position 401, and when the positioning seat 3 rotates, the friction between the rotating part 305 and the rotating position 401 is small, so that the rotation is smoother.

In some embodiments, as shown in FIG. 7, the bearing surface 306 is corrugated. Because the part 10 is placed on the inclined supporting surface 306, the part 10 can slide downwards under the action of gravity, the friction force between the part 10 and the supporting surface 306 is increased by designing the surface of the supporting surface 306 into a corrugated shape, and the part 10 can be stably installed on a clamping position by matching with the magnet 5, the pressing block 303 and the supporting plate 302.

In some embodiments, as shown in fig. 4, the mounting seat 120 includes a first connecting plate 1 and a second connecting plate 2, the first connecting plate 1 includes a top plate 101, a middle plate 102 and a bottom plate 103, one end of the top plate 101 is connected to one end of the middle plate 102, the other end of the middle plate 102 is connected to one end of the bottom plate 103, the top plate 101 and the middle plate 102 are perpendicular to each other, the middle plate 102 and the bottom plate 103 are perpendicular to each other, and the second connecting plate 2 is mounted on the bottom plate 103;

the surface of the bottom plate 103 is stepped, and includes a first step surface 104 and a second step surface 105, the horizontal height of the first step surface 104 is higher than the horizontal height of the second step surface 105, and the second connecting plate 2 is mounted on the second step surface 105 through a bolt or a screw 6.

In some embodiments, the second step surface 105 is provided with at least two third positioning holes 11 and at least two first fixing holes 12, the second connecting plate 2 includes a first plate body extending along the bottom thereof toward the base and adapted to the second step surface 105, and a second plate body coupled to the positioning seat 3 in a matching manner, the first plate body is vertically connected to the second plate body, the first plate body is provided with a fourth positioning hole 14 corresponding to the third positioning hole 11, and a second fixing hole 13 corresponding to the first fixing hole 12, a positioning column 7 is disposed between the third positioning hole 11 and the fourth positioning hole 14 for connection and positioning, and a screw 6 or a bolt is disposed between the first fixing hole 12 and the second fixing hole 13 for fixation.

A processing method of a chamfer closed groove uses the processing tool, a first through groove penetrating through the upper end and the lower end of a positioning seat is formed in a clamping position, and the processing method comprises the following steps:

clamping a part 10 to be processed to the clamping position of the positioning seat 3;

a through hole is formed in the middle of the area to be processed on the part 10, the molybdenum wire 24 penetrates into the through hole and penetrates out of the first through groove 301, a straight groove, namely a closed groove 1001, is formed by firstly walking a rectangular route with the width of 1.36 mm on the part 10 through the molybdenum wire 24, and the area shown in the block A of fig. 9 is a processing area;

rotating the positioning seat 3 to make the second positioning surface 307 at the bottom of the positioning seat 3 abut against the first positioning surface 402 of the supporting block 4, and similarly, processing a chamfer 1002 at one side of the straight groove by a rectangular route with a width of 1.36 mm, wherein the area shown by the box B in fig. 10 is a processing area;

the positioning seat 3 is rotated to make the second positioning surface 307 at the bottom of the positioning seat 3 abut against the other first positioning surface 402 of the supporting block 4, a rectangular path with a width of 1.36 mm is also taken to process a chamfer 1002 at the other side of the straight groove, and the area shown in the box C of fig. 11 is a processing area.

The difference from the processing method of the chamfer closed slot in the embodiment is that the processing method comprises the following steps:

a straight groove is processed on the part 10 by screwing the fastening piece 9 to lock the position of the positioning seat 3;

loosening the fastener 9, rotating the positioning seat 3 to enable a second positioning surface 307 at the bottom of the positioning seat 3 to abut against a first positioning surface 402 of the supporting block 4, tightening the fastener 9 to lock the position of the positioning seat 3, and machining a chamfer 1002 on one side of a straight groove of the part 10;

and (3) loosening the fastener 9, rotating the positioning seat 3 to enable a second positioning surface 307 at the bottom of the positioning seat 3 to be abutted against the other first positioning surface 402 of the supporting block 4, tightening the fastener 9 to lock the position of the positioning seat 3, and machining a chamfer 1002 at the other side of the straight groove of the part 10.

In some embodiments, the method of processing comprises:

before a straight groove is machined on the part 10, the mounting seat and the positioning seat 3 are matched and positioned through the positioning piece 25, so that the positioning seat 3 is kept in a horizontal state, the fastening piece 9 is screwed down to lock the position of the positioning seat 3, and then the straight groove is machined on the part 10.

To sum up, the utility model provides a processing frock and method has following technological effect: (1) the quality stability is obviously improved: the processing is carried out in steps in a same proportion, and the phenomenon of poor quality caused by secondary clamping and mechanical coordinate errors can be completely avoided by the processing of the method; (2) the processing efficiency is improved, and the equipment resources are saved: compared with the prior art, the method has the advantages that the time for changing the machine and changing the wire twice and the time for clamping the workpiece twice can be saved, and two devices are saved; (3) the equipment cost is greatly reduced: if the machining is finished under the requirements of stable quality and high efficiency, a five-axis cutting machine is needed, and the equipment is few in market and extremely high in price.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims (11)

1. The utility model provides a processing frock which characterized in that includes:

the base is provided with at least two first positioning parts;

the positioning seat is limited with a clamping position for clamping a part to be machined, at least two second positioning parts which are matched and positioned with the first positioning parts one by one are arranged on the positioning seat, the positioning seat can rotate around the base between at least two machining positions and is locked at the machining positions, and when the positioning seat rotates to the machining positions, at least one second positioning part on the positioning seat is matched and positioned with at least one first positioning part on the base.

2. The tooling of claim 1, wherein the base comprises: a mounting seat and a supporting block; the supporting block is arranged on one side surface of the mounting seat; the positioning seat is arranged on the same side face of the mounting seat and is positioned at the top of the supporting block;

the top of the supporting block is provided with a first positioning surface, the bottom of the positioning seat is provided with a second positioning surface which is matched and abutted against the first positioning surface, the first positioning surface is limited to form one of the first positioning parts, and the second positioning surface is limited to form one of the second positioning parts.

3. The processing tool according to claim 2, wherein a rotating part is arranged at the bottom of the positioning seat, and a rotating part which is matched with the rotating part to rotate is arranged on the supporting block;

the mounting seat is provided with a first positioning hole, the positioning seat is provided with a second positioning hole matched and positioned with the first positioning hole, the first positioning hole is limited to form one of the first positioning parts, the second positioning hole is limited to form one of the second positioning parts, and a positioning part is connected between the first positioning hole and the second positioning hole.

4. The machining tool according to claim 3, comprising two first positioning surfaces and two second positioning surfaces corresponding to the first positioning surfaces one by one, wherein the two first positioning surfaces are respectively arranged on two sides of the rotating position.

5. The machining tool according to claim 4, wherein the two first positioning planes are symmetrically distributed on two sides of the rotating position.

6. The processing tool according to claim 4, wherein the rotating part is a slot formed through the top surface of the supporting block.

7. The processing tool according to claim 1, wherein the positioning seat is provided with a first through groove penetrating through upper and lower ends thereof and communicating with the clamping seat.

8. The machining tool according to claim 1, wherein the positioning seat comprises a supporting surface for supporting the part to be machined, a supporting plate is arranged at the lower end of the supporting surface, pressing plates are arranged on two sides of the supporting surface, and the supporting surface, the pressing plates and the supporting plate define the clamping position.

9. The processing tool according to claim 1, wherein the base has a second through hole penetrating through the base, the positioning seat has a first connecting hole matching with the second through hole, a rotating shaft is installed between the second through hole and the first connecting hole, and the positioning seat is rotatably connected to the base around the rotating shaft.

10. The processing tool according to claim 1, wherein a third through groove penetrating through the base is formed in the base, a second connecting hole corresponding to the third through groove is formed in the positioning seat, a cross section of the third through groove is arc-shaped with a rotation axis of the positioning seat as a center, and a fastening member is installed between the third through groove and the second connecting hole.

11. The processing tool according to claim 1, wherein the clamping position is provided with a mounting hole, and a magnet for adsorbing a part to be processed is arranged in the mounting hole.

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