TWI706835B - Clamp structure for fast changing tool head and assembling method thereof - Google Patents

Abstract

A clamp structure for fast changing tool head and assembling method thereof are provided. The clamp structure includes a clamp, two seats, and two magnetic members. The clamp is pivotally formed of two clamp bodies having a handle part and an operation part. Two operation part has an installation bore on the clamp wall. The handle of the clamp bodies are gripped for approaching or separating the clamp walls. The seat has a combination part and a head part. Each combination part includes a recess fixing the magnetic member. The combination part is in the installation bore. Each seat has an insertion bore connected with the recess. Two head parts face each other on the clamp walls. The insertion part of the tool head is efficiently inserted to be magnetically positioned and pulled to remove.

Description

Clamp structure for quick change of cutter head and its assembly method

The present invention relates to a clamp, in particular to a clamp structure for quickly changing cutter heads and an assembly method thereof.

As shown in Figures 1 to 5, there are various conventional clamps that can be equipped with a cutter head. Each clamp is mainly composed of two clamp bodies 1 pivotally connected. Each clamp body 1 has a grip 2 and one end The working part 3, this working part 3 has a clamp wall 4 for installation of the cutter head 5 to perform the clamping operation of the object. The cutter head 5 is, for example, a combination of an anvil block and a clamping block and is used for fastening It can be used in belt hole drilling by the combination of hole cutter and cutting board.

As shown in Fig. 1, the cutter head 5 is fixed with a screw 6A in the screw hole 7A of the clamp wall 4; and as shown in Fig. 2, the cutter head 5 is clamped with a cone 6B It is fixed at the positioning part 7B on the wall 4 of the clamp; and the clamp shown in FIG. 3 is fixed by the tool head 5 with a protruding post 6C in the positioning part 7C, which is clamped on a rubber ring 8C; The clamp is fixed by the clamping post 6D of the cutter head 5 in the ring sleeve 7D. In the clamp shown in Fig. 5, the clamp post 6E of the cutter head 5 passes through the clamp 7E and is clamped and fixed.

However, the above-mentioned various conventional clamps that can be installed with cutter heads have the following problems:

1. For the clamp shown in Fig. 1, it takes time to screw the thread 6A into the screw hole 7A to tighten it during installation, which is the slowest installation of the cutter head 5 among the conventional clamps.

2. For the clamps shown in Figures 2 to 4, although the installation time of the tool head 5 is faster than that of the aforementioned screw 6A and screwed on the screw hole 7A, the cone column 6B, rubber ring 8C, and ring sleeve 7D are respectively connected to the positioning portion 7B, The clamping of the protruding post 6C and the clamping post 6D will cause the components to be worn out at the contact part due to frequent use, and over time will easily cause the cutter head 5 to loosen on the clamp.

3. In the clamp shown in Figure 5, although the clamp 7E can clamp the clamp column 6E without loosening, it takes time and effort to pull the clamp 7E apart when the cutter head 5 is removed. It is inconvenient to use the clamp column 6E to detach.

4. For conventional clamps, if there is a spare blade 5, it is usually placed in the tool box that the clamps are stored in. It is inconvenient to carry the clamps together. Therefore, in order to carry the spare cutter head 5 at the same time, some conventional clamps will machine screw holes (not shown in the figure) on the clamp body 1 so that the screw cutter head 5 can be screwed on the clamp body 1. However, additional processing of screw holes on the clamp body 1 will cause the problem of increased manufacturing cost of the clamp.

Therefore, how to solve the problems of the above-mentioned conventional clamps, including the slow installation of the cutter head 5 in the clamp, or the inconvenient installation of the cutter head 5 in the clamp, or the inconvenient removal of the cutter head 5, And the problem that the spare cutter head 5 is carried with the clamp is the focus of the present invention.

In order to solve the above-mentioned problems, the present invention provides a clamp structure and an assembly method for quickly changing the cutter head, so that the cutter head can be positioned in the clamp by magnetic attraction, and can be quickly assembled and disassembled to facilitate the replacement of the cutter head.

An embodiment of the present invention provides a clamp structure for quick-change tool heads, which includes a clamp, two seat bodies, and two magnetic suction parts. The clamp is composed of two clamp bodies pivotally connected, and each clamp body has a The grip part has a working part at the end different from the grip part. The two working parts have two pliers walls facing each other. Two mounting holes are arranged opposite to each other on the two pliers walls. The grip parts of the two pliers bodies can be held Hold the drive to drive the two clamp walls to move closer or farther away. The two seat bodies respectively have an installation part and a head. The head extends radially at one end of the installation part. Each installation part has a receiving slot. Each installation part is placed in the aforementioned installation hole. And a stopper located on the outer periphery of the installation part is blocked and positioned on both sides of the clamp wall. Each seat body has a head axially through a socket to communicate with the groove, and the two heads are in the two clamps. The walls face each other. The two magnetic components are respectively fixed in the aforementioned cavity. The cutter head has a magnetically attracted inserting part, and the inserting part can be inserted into each socket to contact the magnetic component and be magnetically attracted. Positioning, and can be pulled out forcefully and quickly replaced.

In a preferred embodiment, each seat has a level in the mounting part, the level is formed by the hole being smaller than the cavity, and each magnetic attraction member is placed in the cavity with one end against the level, and the other end is The limit part protruding in the containing groove is blocked to position each magnetic attraction member in each containing groove.

In a preferred embodiment, each accommodating slot penetrates the mounting part where it is located, and each accommodating slot is longer than the magnetic attraction member to form an inserting section, and the inserting section and the socket of each seat body are located at the set The two ends of the magnetic attraction piece, and the inserting section is for the cutter head to insert the inserting part into the magnetic attraction piece to be positioned by magnetic attraction.

An embodiment of the present invention also provides a method for assembling a clamp structure. The mounting portion of each seat body is provided with a first ring groove in advance on the circumference, and the length of the first ring groove in the axial direction is greater than that in the radial direction. Depth, before or after the two pliers bodies are pivotally connected to form the pliers, each mounting part is first placed in the corresponding mounting hole until the head is blocked on one side of the pliers wall, and then each seat body The two ends of the pliers are pressed inward to the first ring groove to be squeezed and deformed to form the stopper and block on the other side of the pliers wall to assemble and position each seat body on the pliers wall. on.

In a preferred embodiment, the mounting portion of each seat body is provided with a second ring groove in advance on the circumference, and the length of the second ring groove in the axial direction is greater than the depth in the radial direction. Before the pliers wall, first place each magnetic component in the corresponding pocket until one end abuts against the stage, and then press the two ends of each seat until the second ring groove is also squeezed and deformed as described above. The limiting part is formed to block at the other end of the magnetic attraction member, so as to assemble and position each magnetic attraction member in the cavity.

Thereby, when a suitable cutter head is to be assembled in the clamp structure of the present invention, only the inserting part of the cutter head needs to be aligned with the socket of the seat body and inserted, and the inserting part can be touched by the magnetic attraction member. Magnetic force attracts and locates, you can operate the grips of the two pliers bodies to bring the blades positioned by the two seat bodies close to perform the clamping operation of the object, and when you want to replace the blades, the plug and the magnetic It is attracted by magnetic force, and it is easy to apply force to the cutter head to pull the plug-in part out of the socket, so as to achieve the effect of quickly replacing the cutter head.

In addition, when there is a spare cutter head to be carried with the clamp, because the receiving part of the installation part has an insertion section at the end different from the socket, except for the cutter head, the socket part can be inserted into the socket and be magnetically attracted In addition to being used after being held and positioned by the magnetic force, the spare cutter head can also be inserted into the insertion section with the insert part, and the magnetic part is magnetically attracted and positioned, so the clamp itself does not need to be processed, but only through The inserting section of the seat body can be installed for the spare cutter head so that the spare cutter head can be carried with the clamp.

In order to facilitate the description of the central idea of the present invention expressed in the column of the above-mentioned summary of the invention, specific embodiments are used to express it. The various objects in the embodiment are drawn according to the proportion, size, deformation or displacement suitable for explanation, rather than drawn according to the proportion of the actual element, which will be described first.

Referring to FIGS. 6 to 12, the present invention provides a clamp structure for quick-change tool heads and an assembly method thereof. The clamp structure 100 includes a clamp 10, two seat bodies 20, and two magnetic attraction members 30. The cutter head 40 can be installed to perform the clamping operation. In the first embodiment, the cutter head 40 is an example of a fastener clip set capable of installing fasteners, in which:

The pliers 10 is composed of two pliers bodies 11 pivotally connected. Each pliers body 11 has a grip portion 12 and a working portion 13. The working portion 13 is located on the pliers body 11 at an end different from the grip portion 12 . The working part 13 of each pliers body 11 has a pliers wall 14, and the pliers walls 14 of the two pliers bodies 11 are arranged facing each other, and each pliers wall 14 has a mounting hole 15 respectively, and the two mounting holes 15 of the two pliers walls 14 are arranged oppositely. The gripping parts 12 of the two pliers bodies 11 can be gripped and driven, for example, by holding the two gripping parts 12 close together, so that the two gripping parts 12 are relatively close, and at this time, the two pliers walls 14 are also brought closer; Open, so that the two gripping parts 12 are relatively far away, and at this time, the two forceps walls 14 are also moved relatively far away.

Each seat body 20 has an installation portion 21 and a head 22. The head 22 is located at one end of the installation portion 21 and extends radially. Therefore, the width of the head 22 is larger than the installation portion 21, and each installation There is a container 23 in the part 21. When the seat body 20 is installed on the pliers 10, each seat body 20 has its mounting portion 21 placed in the mounting hole 15 of a pliers wall 14. The mounting portion 21 has a stop 211 on the outer periphery, with the head 22 and the stop The portions 211 block positioning on both sides of the clamp wall 14 (as shown in FIG. 7). Each seat body 20 has an insertion hole 24, and each insertion hole 24 is axially penetrated from one end of the seat body 20 with a head 22 and communicates with the receiving groove 23. The two heads 22 face each other on the two clamp walls 14 provided. Assume. Said facing each other means that one and the other of the two heads 22 located on the two clamp walls 14 are facing each other, and it is not limited to the two heads 22 being directly facing each other, and a difference in angle (such as two The angle caused by the inclination of the clamp wall 14 when relatively far away).

Each magnetic attraction member 30 is respectively fixed in the receiving groove 23 of the base body 20. The cutter head 40 has an inserting portion 41, and the inserting portion 41 can be inserted into each socket 24 until one end of the inserting portion 41 contacts The magnetic attraction member 30 located in the accommodating slot 23 is therefore attracted and positioned by the magnetic force (as shown in FIG. 8), and can be pulled out by force for quick replacement. In this embodiment, each magnetic attraction member 30 is a permanent magnet, and the insertion portion 41 is an iron material that can be magnetically attracted.

In this embodiment, each seat body 20 has a level 25 in the installation portion 21. This level 25 is formed by the insertion hole 24 being smaller than the receiving groove 23, that is, the installation portion 21 has an insertion hole 24 and a receiving groove 23. The difference in diameter forms a step 25. Each magnetic attraction member 30 in the containing groove 23 is located at one end against the step 25, and the other end is blocked by a limit part 212 (as shown in FIG. 7). The portion 212 protrudes in the receiving groove 23 to position each magnetic attraction member 30 in each receiving groove 23.

In this embodiment, each accommodating slot 23 penetrates the mounting portion 21 where it is located, and each accommodating slot 23 is longer than the magnetic attraction member 30 provided, so the accommodating slot 23 forms an insertion section outside the magnetic attraction member 30 231, the insertion section 231 and the insertion hole 24 of each seat body 20 are located at the two ends of the magnetic attraction member 30, and the insertion section 231 is for the cutter head 40 to be inserted into the set by the insertion portion 41 The magnetic attraction member 30 is magnetically attracted and positioned (as shown in FIG. 8).

In this embodiment, the pliers 10 is shown in FIG. 6, and its two pliers bodies 11 each have a shaft hole 16. Each shaft hole 16 is located in the pliers body 11 adjacent to the working part 13, and the two shaft holes 16 The position of the clamp body 11 is symmetrically arranged. A shaft member 17 penetrates through each shaft hole 16, and two shaft members 17 are pivotally connected to the two pliers body 11 at the two ends on the same side of the pliers tool 10 by a connecting member, so that the two pliers body 11 can pivot relatively. Furthermore, the connecting member is a piece of body 18 in a preferred embodiment. The piece of body 18 is elongated and has two perforations 181. The two perforations 181 are adjacent to the two ends of the piece of body 18. The two ends on the same side of the forceps 10 respectively pass through the two through holes 181 and are pivotally connected to the sheet 18.

In this embodiment, it further includes a reset elastic member, which is arranged between the two pliers body 11, so that when the force of the gripping portion 12 of the two pliers body 11 is lost, the reset elastic member drives the two pliers The grip 12 of the body 11 is opened, so that the two working parts 13 are relatively far away. Preferably, the reset elastic member is a torsion spring 19, which includes a loop portion 191 and two elastic arms 192 (as shown in FIG. 8). The two elastic arms 192 extend from both ends of the loop portion 191, and the loop portion 191 is a snare There is a shaft 17 (the two shafts 17 can choose one to snare), and the two elastic arms 192 abut against the inner sides of the two holding parts 12 respectively. Therefore, when no force is applied to the two gripping parts 12 held, the two gripping parts 12 will be automatically opened by the elastic force of the two elastic arms 192.

The following further describes the assembly method of the clamp structure of the present invention, especially the assembly and positioning of the seat body 20 on the pliers arm 14, in that the mounting portion 21 of each seat body 20 is pre-arranged with a first ring groove 213 and a second The second ring groove 214 (shown in FIG. 9), the first ring groove 213 and the second ring groove 214 have a longer axial length than a radial depth, and the first ring groove 213 is located at the mounting portion 21 The position corresponds to the blocking portion 211 after forming, and the position of the second ring groove 214 on the mounting portion 21 corresponds to the limiting portion 212 after forming. Before or after the two pliers bodies 11 are pivotally connected to form the pliers 10, each mounting portion 21 is placed in the corresponding mounting hole 15 until the head 22 is blocked on one side of the pliers wall 14 and the Each magnetic member 30 is placed in the corresponding pocket 23 until one end abuts against the stage 25 (as shown in FIG. 10), and then the clamp 50 is used to press the two ends of each seat 20 inward with axial pressure (such as 11), until the first ring groove 213 is squeezed and deformed to form a stop 211, which is blocked on the other side of the clamp wall 14 so as to assemble and position each seat 20 on the clamp wall 14 and squeeze and deform at the second ring groove 214 to form a limiting portion 212, which is blocked at the other end of the magnetic attraction member 30 to assemble and position each magnetic attraction member 30 in the cavity 23 provided .

Therefore, when the cutter head 40 is to be mounted on the pliers 10 to perform clamping operations on the object, the operator only needs to hold the cutter head 40 and align the insertion portion 41 with the insertion hole 24 and insert it until the insertion portion One end of 41 contacts the magnetic attraction member 30 and is attracted by the magnetic force to be positioned. As long as the magnetic force of the magnetic attraction member 30 is not weakened, the insertion portion 41 will always be attracted by the magnetic attraction member 30 and will not be separated from the base body 20. If you want to replace the cutter head 40 from the base 20, the magnetic force of the magnetic attraction member 30 holding the plug-in portion 41 can be detached by the force of the hand. At this time, the operator only needs to hold the cutter head 40 and perform a little Pull out the plug-in portion 41 by force, and the magnetic force of the magnetic attraction member 30 can be separated from the base body 20. The operator then inserts the plug-in portion 41 of another bit 40 into the socket 24 to complete the assembly.

In addition, if there is a spare cutter head 40 to be carried with the pliers 10, it is only necessary to change the insertion portion 41 of the cutter head 40 into the insertion section 231, and also allow one end to be attracted by the magnetic attracting member 30. The spare cutter head 40 is also magnetically positioned on the base body 20 and can be carried along with the pliers 10.

From the above description, it is not difficult to find that the characteristics of the present invention are:

1. If the cutter head 40 is to be assembled into the clamp structure 100 of the present invention, the operator only needs to align the inserting part 41 of the cutter head 40 with the insertion hole 24 and insert it into the seat body 20. One end of the inserting part 41 is at When touching the magnetic member 30, it can be attracted by the magnetic force and positioned. The operator can operate the grip 12 of the two pliers body 11 to make the cutter heads 40 located on the two seat bodies 20 relatively close to perform the object clamping operation And, if you want to replace the cutter head 40, you only need to apply the pulling force to the cutter head 40. Because the connector 41 and the magnetic attraction member 30 are magnetically attracted, it is not difficult to remove the connector 41 from the socket. It can be pulled out in 24 to achieve the effect of quick plugging and pulling to replace the cutter head 40.

2. If the pliers 10 has a spare cutter head 40 that needs to be carried, since the installation part 21 has an insertion section 231 and a socket 24 in the receiving groove 23 at different ends, except for the cutter head 40, the insertion The connecting portion 41 is inserted into the insertion hole 24 and is magnetically attracted and positioned by the magnetic attraction member 30 to perform the clamping operation of the object. The spare cutter head 40 can also be inserted into the insertion section 231 with the inserting portion 41, and the same The magnetic attraction member 30 is attracted and positioned by magnetic force. Compared with the conventional clamp, the clamp of the present invention does not need to be processed in any way, and only through the installation of the inserting section 231 of the base body 20, it can be provided. The spare cutter head 40 is installed so that the spare cutter head 40 can be carried with the clamp to achieve the convenience of using the clamp.

As shown in Figure 12, it is another embodiment of the clamp structure of the quick-change tool bit of the present invention, which includes the clamp 10, the base 20 and the magnetic member 30 as in the first embodiment. The main difference between the examples is that the cutter head 60 is a punching clamp set, for example, for belt punching. The cutter head 60 also has the inserting portion 41 of the aforementioned cutter head 40, and can be magnetically attracted 30 It is magnetically attracted and positioned on the base 20 to achieve the same effect as the first embodiment.

The above-mentioned embodiments are only used to illustrate the present invention, and are not used to limit the scope of the present invention. All modifications or changes made without violating the spirit of the present invention belong to the scope of the present invention.

[Prior Art Part]

1: Clamp body

2: Grip

3: Work Department

4: Clamp wall

5: cutter head

6A: Thread

7A: Screw hole

6B: Cone

7B: Positioning part

6C: convex post

7C: Positioning Department

8C: Rubber ring

6D: Cartridge

7D: Ring sleeve

6E: clamp column

7E: Clip

[Part of the case]

100: Clamp structure

10: Pliers

11: Clamp body

12: Grip

13: Work Department

14: Clamp wall

15: mounting hole

16: shaft hole

17: Shaft

18: sheet body

181: Piercing

19: Torsion spring

191: ring

192: Spring Arm

20: Seat

21: Installation Department

211: Block

212: Limit

213: The first ring groove

214: The second ring groove

22: head

23: container

231: Insertion section

24: jack

25: Class

30: Magnetic parts

40: cutter head

41: Socket

50: Fixture

60: cutter head

Figure 1 is a schematic diagram of the plane structure of a conventional clamp structure with a screw lock combined with a cutter head. Figure 2 is a schematic diagram of the plane structure of another conventional clamping structure using a cone to clamp the cutter head. Figure 3 is a schematic diagram of another conventional clamp structure with a convex post clamped on the plane structure of the rubber ring. Fig. 4 is a schematic diagram of a plane structure of another conventional clamp structure in which the clamp post is clamped in the ring sleeve. Fig. 5 is a schematic diagram of the plane structure of another conventional clamp structure to position the clamp post with the clamp. Fig. 6 is a three-dimensional appearance view of the clamp structure of the first embodiment of the present creation with the cutter head installed. The cutter head in the figure is a fastener clip group. Figure 7 is a partial cross-sectional view of Figure 6 taken along line 7-7. Fig. 8 is a schematic diagram showing that the clamping structure of the first embodiment of the present invention has the blades installed in the insertion holes and insertion holes of each base body. Figure 9 is a structural schematic diagram of the first embodiment of the base body in the first embodiment of the creation, where the mounting part has first and second ring grooves before the blocking part and the limiting part are formed. The figure also shows that the magnetic attraction member is fixed in front of the cavity The separate configuration. Fig. 10 is a schematic diagram of the seat body of the first embodiment of Fig. 9 with the mounting part placed in the mounting hole until the head is blocked by the clamp wall. In the figure, the magnetic attraction member has been placed in the cavity. Fig. 11 is a schematic diagram of the two ends of the seat body of Fig. 10 after being positioned on the wall of the forceps ready to press inwardly to form a stop and a stop. Fig. 12 is a perspective view of the clamp structure of the second embodiment of the present creation when the cutter head is installed. The cutter head in the figure is a punching clamp group.

13: Work Department

14: Clamp wall

15: mounting hole

20: Seat

21: Installation Department

211: Block

212: Limit

22: head

23: container

231: Insertion section

24: jack

25: Class

30: Magnetic parts

Claims (11)

A clamp structure for quickly changing cutter heads, comprising: a clamp consisting of two clamp bodies pivotally connected, each of the clamp bodies has a grip part and a working part at an end different from the grip part, The two working parts have two pliers walls facing each other, and two mounting holes are respectively arranged opposite to each other on the two pliers walls. The grip portions of the two pliers bodies can be gripped and driven to drive the two pliers walls to move closer or farther away; The two seat bodies respectively have an installation part and a head, the head extends radially at one end of the installation part, each of the installation parts has a cavity, and each of the installation parts is placed in an aforementioned installation hole , And the head and a stopper located on the outer periphery of the mounting part are blocked and positioned on both sides of the clamp wall, each of the seat body has its own end of the head and axially penetrates a hole to communicate with the container Slot, the two heads are arranged opposite to each other on the two clamp walls; and two magnetic attraction members are respectively fixed in the aforementioned cavity, the cutter head has an inserting part that can be magnetically attracted, the The plug-in part can be inserted into each of the insertion holes to contact the magnetic attraction member and be attracted and positioned by the magnetic force. The clamp structure for quick-change tool heads according to claim 1, wherein each of the seat bodies has a level in the mounting part, and the level is formed by the insertion hole being smaller than the pocket, and each of the magnetic components is located One end of the accommodating groove abuts against the stage, and the other end is blocked by a limiting portion protruding in the accommodating groove to position each of the magnetic attraction members in each of the accommodating grooves. The clamp structure for quick-change tool heads according to claim 2, wherein the mounting part of each seat body is provided with a first ring groove and a second ring groove around the circumference, the first ring groove and the second ring groove The length of the second ring groove system in the axial direction is greater than the depth in the radial direction. Each of the seat bodies presses both ends inward to the first ring groove to be compressed and deformed to form the stop portion, and the second The ring groove is squeezed and deformed to form the limiting portion. As described in any one of claims 1 to 2, the quick-change tool bit clamp structure, which Wherein, each of the accommodating slots penetrates the mounting part where it is located, and each of the accommodating slots is longer than the magnetic attraction member to form an insertion section, and the insertion section and the socket of each seat body are located in the The two ends of the magnetic attraction member, and the insertion section allows the cutter head to be inserted into the magnetic attraction member by the insertion portion to be positioned by magnetic attraction. According to any one of claims 1 to 2, the quick-change cutter head clamping structure, wherein each of the magnetic attraction members is a permanent magnet, and the inserting part of the cutter head is an iron material that can be magnetically attracted. According to any one of claims 1 to 2, the quick-change tool bit clamp structure, wherein each of the two clamp bodies has a shaft hole, each of the shaft holes is adjacent to the working part of the clamp body, and the two shaft holes The positions of the two pliers bodies are symmetrically arranged, and each shaft hole is penetrated with a shaft member, and the two shaft members are pivotally connected to the two pliers body by a connecting member at the two ends on the same side of the pliers. The quick-change tool bit clamp structure of claim 6, wherein the connecting piece is a piece, the piece is elongated and has two perforations adjacent to both ends, and the two shaft pieces are located on the same clamp Two ends of the side respectively pass through the two through holes to be pivotally connected to the sheet body. According to claim 6, the quick-change tool bit clamping structure further includes a reset elastic member arranged between the two pliers bodies to allow the grips of the two pliers bodies to be gripped and driven When the force disappears, the restoring elastic member drives the grip parts of the two pliers bodies to open, so that the two working parts are relatively far away. According to claim 8, the quick-change tool bit clamp structure, wherein the reset elastic member is a torsion spring, and includes a loop portion and elastic arms extending from both ends of the loop portion, and the loop portion is looped around a In the aforementioned shaft, the two elastic arms respectively abut against the inner sides of the two grip parts. A method for assembling the clamp structure according to claim 2, wherein a first ring groove is pre-arranged on the circumference of the mounting portion of each seat body, and the length of the first ring groove in the axial direction is greater than that in the radial direction. Depth, before or after the two pliers bodies are pivotally connected to form the pliers, the mounting parts are first placed in the corresponding In the mounting hole, the head is blocked on one side of the clamp wall, and the two ends of each seat are pressed inward to the first ring groove to be squeezed and deformed to form the blocking portion The other side of the clamp wall is blocked to assemble and position each seat body on the clamp wall. The assembling method of claim 10, wherein the mounting portion of each seat body is provided with a second annular groove in advance on the circumference, and the length of the second annular groove in the axial direction is greater than the depth in the radial direction, and in each of the Before the seat body is assembled and positioned on the pliers wall, each of the magnetic components is first placed in the corresponding cavity until one end abuts against the stage, and then the two ends of each seat body are pressed until said The second ring groove is also squeezed and deformed to form the limiting portion and block at the other end of the magnetic attraction member to assemble and position each magnetic attraction member in the cavity.

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