CN116511943A - Processing device - Google Patents

Abstract

The invention discloses a processing device which comprises a first cutter head, a second cutter head, a first cutter and a second cutter. The first cutterhead has a first side, a first surface and a second surface. The first surface and the second surface are opposite, and the first side is located between the first surface and the second surface. The second cutterhead is arranged on the first surface. The second cutterhead has a third surface and a second side. The third surface faces the first surface, and the second side surface is connected with the third surface. The first cutter is arranged on the first cutter head and provided with a first processing end protruding from the first side face. The second cutter is arranged on the second cutter head and is provided with a second processing end protruding from the second side face. The first machining end and the second machining end are offset from each other in the axial direction of the first cutterhead.

Description

Processing device

technical field

The invention relates to a processing device, especially a processing device.

Background technique

With the development of modern technology, compared with traditional precision machining, the precision of ultraprecision machining has been improved by at least one order of magnitude. Furthermore, ultra-precision machining has special requirements for workpiece material, processing equipment, tools, measurement and environmental conditions. For example, the material of the workpiece must be extremely fine and uniform, the processing device needs to have extremely high motion precision, and most of the processing environment must maintain constant temperature, constant humidity and clean air to ensure that the processing error can be controlled at least about 0.1 microns.

Generally speaking, most of the existing processing devices are equipped with a cutterhead, and a cutter is arranged on the cutterhead. However, because the cutterhead has limited space for fixing the cutters, the number of cutters in the existing processing device is limited. Therefore, the existing processing devices often need to change tools frequently, resulting in delays in the processing schedule.

Contents of the invention

The invention provides a processing device to provide more space for arranging cutters.

The processing device provided by the present invention includes a first cutterhead, a second cutterhead, a first cutter and a second cutter. The first impeller has a first side, a first surface and a second surface. The first surface is opposite to the second surface, and the first side is located between the first surface and the second surface. The second cutter head is disposed on the first surface. The second cutterhead has a third surface and a second side. The third surface faces the first surface, and the second side is connected to the third surface. The first cutter is arranged on the first cutter head and has a first processing end protruding from the first side. The second cutter is arranged on the second cutter head and has a second processing end protruding from the second side. In the axial direction of the first cutter head, the first processing end and the second processing end are offset from each other.

In an embodiment of the present invention, the above-mentioned first surface may have a first positioning structure. The second cutterhead may have two second positioning structures corresponding to the two first positioning structures, and the second cutterhead is disposed on the first surface via the two second positioning structures and the two first positioning structures.

In an embodiment of the present invention, the above-mentioned two first positioning structures include, for example, two first positioning holes, and the two second positioning structures may include two first positioning posts corresponding to the two first positioning holes.

In an embodiment of the present invention, the above-mentioned processing device further includes, for example, a third cutterhead and a third cutter. The third cutterhead has a fourth surface and a third side. The fourth surface faces the second surface, and the third side is connected to the fourth surface. The third cutter is arranged on the third cutter head and has a third processing end protruding from the third side. The first machined end, the second machined end and the third machined end are axially offset from one another.

In an embodiment of the present invention, the above two first positioning structures are arranged along the first radial direction of the first cutterhead. For example, the second surface has two third positioning structures. The two third positioning structures are arranged along the second radial direction of the first cutter head, and the second radial direction and the first radial direction are staggered. The third cutterhead may have two fourth positioning structures corresponding to the two third positioning structures, and the third cutterhead is disposed on the second surface via the two third positioning structures and the two fourth positioning structures.

In an embodiment of the present invention, the above-mentioned two first positioning structures may include two first positioning holes, and the two second positioning structures may include two first positioning posts corresponding to the two first positioning holes. The two third positioning structures may include two second positioning posts, and the two fourth positioning structures may include two second positioning holes corresponding to the two second positioning posts.

In an embodiment of the present invention, the above-mentioned first cutter is disposed along the circumferential direction of the first cutter head, and surrounds the two first positioning structures. The second cutter can be arranged along the circumference of the second cutter head and surround the two second positioning structures. The third cutter can be arranged along the circumferential direction of the third cutter head and surround the second and fourth positioning structures.

In an embodiment of the present invention, the above-mentioned processing device may further include a first fixing member. The second surface has grooves, and the third surface has first ribs corresponding to the grooves. The first fixing part passes through the first surface from the groove, and extends into the first rib.

In an embodiment of the present invention, the above-mentioned first fixing member may have a connected head and a rod. The head is embedded in the first cutterhead from the second surface. The stem passes through the first surface and into the first rib.

In an embodiment of the present invention, the above-mentioned second surface further has a knife groove, for example, and the first cutter is fixed in the knife groove. The sipe is spaced apart from the groove in the circumferential direction of the first cutterhead, and the second surface is formed with a second rib between the groove and the sipe. The sipe has a first width in the circumferential direction, the second rib has a second width in the circumferential direction, and the second width is greater than or equal to the first width.

In an embodiment of the present invention, the above-mentioned processing device may further include a second fixing member, and the second fixing member is passed through the second rib. The first cutter is fixed in the cutter groove through the second fixing member.

In an embodiment of the present invention, the above-mentioned sipe has a depth in the axial direction, for example, the depth is equal to the first width.

In an embodiment of the present invention, the above-mentioned processing device further includes a fixing member, for example. The second surface has grooves, and the second cutter corresponds to the grooves. The fixing part passes through the first surface from the groove and extends into the second cutter.

In an embodiment of the present invention, the above-mentioned processing device may further include a cutter cover, and the first cutter disc is interposed between the cutter cover and the second cutter disc.

In an embodiment of the present invention, the above-mentioned processing device further includes a knife seat, for example. The knife cover has a surface facing away from the first knife disc, and the knife seat is arranged on the surface.

The processing device of the present invention adopts a first cutterhead and a second cutterhead that overlap each other, and the first cutter and the second cutter are staggered with each other, so that the first processing end and the second processing end are in the axial direction of the first cutterhead. misaligned with each other. Based on the above, the processing device of the present invention can provide more space for arranging knives, so that not only can the number of knives be increased, but also a variety of knives with different specifications can be provided. Therefore, the processing device of the present invention can not only reduce the time cost required for maintenance and maintenance, avoid delaying the processing schedule, but also has the advantage of good expandability.

In order to make the above and other objects, features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a schematic diagram of a processing device according to an embodiment of the present invention.

Fig. 2 is a schematic diagram showing the separation of the first cutterhead and the second cutterhead in Fig. 1 .

FIG. 3 is a schematic top view of the processing device in FIG. 1 .

FIG. 4 is a schematic side view of the processing device in FIG. 1 .

Fig. 5 is a schematic diagram of a processing device according to another embodiment of the present invention.

Fig. 6 is a schematic diagram showing the separation of the first cutterhead, the second cutterhead and the third cutterhead in Fig. 5 .

FIG. 7 is a schematic top view of the processing device in FIG. 5 .

Fig. 8 is a schematic diagram of a processing device according to another embodiment of the present invention.

Fig. 9 is a schematic diagram showing the separation of the first cutter head, the second cutter head, and the third cutter head from the cutter cover in Fig. 8 .

Fig. 10 is a schematic diagram of a processing device according to another embodiment of the present invention.

FIG. 11 is a schematic diagram of the tool holder in FIG. 10 exposing the tool.

Among them, reference signs:

100, 100a, 100b, 100c: processing device

110: The first cutter head

111: first side

112: first surface

113: second surface

120: Second cutter head

121: third surface

122: second side

123: Second positioning structure

130: The first tool

131: The first processing end

140: Second tool

141: The second processing end

150: the first fixing part

151: head

152: stem

160: the second fixing piece

170: The third cutter head

171: The fourth surface

172: third side

173: The fourth positioning structure

174, 191: surface

180: The third tool

181: The third processing end

190: knife cover

1120: The first positioning structure

1121: second rib

1130: The third positioning structure

1210: first rib

A: Axial

B: Knife seat

C: Circumferential

D: Depth

F:Fixer

G1: Groove

G2: knife groove

H1: The first positioning hole

H2: The second positioning hole

N: Knife

P1: The first positioning post

P2: Second positioning post

R1: first radial

R2: second radial

SC: screw

W1: first width

W2: second width

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Fig. 1 is a schematic diagram of a processing device according to an embodiment of the present invention. Fig. 2 is a schematic diagram showing the separation of the first cutterhead and the second cutterhead in Fig. 1 . FIG. 3 is a schematic top view of the processing device in FIG. 1 . FIG. 4 is a schematic side view of the processing device in FIG. 1 .

Please refer to FIG. 1 and FIG. 2 , the processing device 100 includes a first cutterhead 110 , a second cutterhead 120 , a first cutter 130 and a second cutter 140 . The first cutterhead 110 has a first side 111 , a first surface 112 and a second surface 113 . The first surface 112 is opposite to the second surface 113 , and the first side 111 is located between the first surface 112 and the second surface 113 . The second cutter head 120 is disposed on the first surface 112 . The second cutterhead 120 has a third surface 121 and a second side 122 . The third surface 121 faces the first surface 112 , and the second side 122 is connected to the third surface 121 . The first cutter 130 is disposed on the first cutter head 110 and has a first processing end 131 protruding from the first side 111 . The second cutter 140 is disposed on the second cutterhead 120 and has a second processing end 141 protruding from the second side 122 . In the axial direction A (also shown in FIG. 3 ) of the first cutterhead 110 , the first processing end 131 and the second processing end 141 are offset from each other.

Both the first cutter head 110 and the second cutter head 120 are disc-shaped, for example, and the second cutter head 120 can be stacked on the first cutter head 110 along the axial direction A of the first cutter head 110 . Furthermore, the first cutter head 110 and the second cutter head 120 can be substantially coaxially arranged, and can be arranged on the machine shaft of the processing machine together, but the application of the processing device 100 is not limited in the present invention.

Please refer to FIG. 2 and FIG. 3 , in this embodiment, the first surface 112 (marked in FIG. 2 ) can have two first positioning structures 1120, wherein the two first positioning structures 1120 of this embodiment are based on two first positioning holes H1 Example; more specifically, the two first positioning holes H1 are, for example, through holes passing through the first surface 112 and the second surface 113 , but the present invention does not limit the specific features of the two first positioning structures 1120 . In this embodiment, the second cutterhead 120 can have two second positioning structures 123 corresponding to the two first positioning structures 1120, and the second cutterhead 120 is arranged on the second positioning structure 123 and the two first positioning structures 1120. first surface 112 . In detail, the two first positioning structures 1120 are arranged around the axial direction A of the first cutter head 110 , for example. On the other hand, the shapes of the two second positioning structures 123 can be complementary to the shapes of the two first positioning structures 1120 , and the positions of the two second positioning structures 123 can correspond to the positions of the two first positioning structures 1120 . In this way, the two first positioning structures 1120 can be combined with the two second positioning structures 123 , so that the first cutter head 110 and the second cutter head 120 are superimposed on each other and can be substantially coaxially arranged. Specifically, as mentioned above, the two first positioning structures 1120 may include two first positioning holes H1, and the two second positioning structures 123 may include two first positioning posts P1 corresponding to the two first positioning holes H1. In this way, by aligning the two first positioning columns P1 of the second cutter head 120 and extending into the two first positioning holes H1 of the first cutter head 110, the second cutter head 120 can be superimposed on the first cutter head 110. first surface 112 . Incidentally, in this embodiment, the first cutterhead 110 and the second cutterhead 120 are, for example, two cutterheads formed by the same mold, and are additionally passed through two first positioning structures 1120 and two second positioning structures 123 The location design of , so that the first tool 130 and the second tool 140 can be misaligned with each other in the axial direction A.

In this embodiment, the first cutter 130 and the second cutter 140 are, for example, diamond cutters, but the invention is not limited thereto. In addition, the first processing end 131 is, for example, the end where the first tool 130 processes the workpiece, and this embodiment is shown as the tip of the first tool 130 , but other embodiments are not limited thereto. Likewise, the second processing end 141 is, for example, the end of the second tool 140 for processing the workpiece, and this embodiment is shown as the tip of the second tool 140 , but the invention is not limited thereto. The first cutter 130 in this embodiment is disposed along the circumferential direction C (shown in FIG. 3 ) of the first cutter head 110 , and surrounds the two first positioning structures 1120 . The second cutter 140 can be disposed along the circumferential direction C of the second cutter head 120 and surround the two second positioning structures 123 . Specifically, the first cutter 130 can be disposed along the edge of the second surface 113 , and surround the axial direction A of the first cutter head 110 together with the two first positioning structures 1120 and the two third positioning structures 1130 . Similarly, the second cutter 140 can be disposed along the edge of the third surface 121 and surround the axial direction A of the first cutterhead 110 together with the two second positioning structures 123 .

Compared with the prior art, the processing device 100 of this embodiment adopts the first cutterhead 110 and the second cutterhead 120 stacked on top of each other, and the first processing end 131 and the second processing end 141 are positioned at the edge of the first cutterhead 110 They are misaligned with each other in the axial direction A. Based on the above, the processing device 100 of this embodiment can provide more space for arranging knives, so that not only can the number of knives be increased, but also a variety of knives with different specifications can be provided. Therefore, the processing device 100 of this embodiment can not only reduce the time cost required for maintenance and maintenance, avoid delaying the processing schedule, but also has the advantage of good expandability.

Please refer to FIG. 2 and FIG. 4 . Incidentally, the processing device 100 may further include a first fixing member 150 . The second surface 113 has a groove G1, and the third surface 121 has a first rib 1210 corresponding to the groove G1. The first fixing member 150 passes through the first surface 112 from the groove G1 and extends into the first rib 1210 to further fix the first cutter head 110 and the second cutter head 120 . Specifically, the groove G1 can reduce the thickness of a part of the first cutter head 110 so as to allow the first fixing member 150 to pass through. In addition, as shown in FIG. 3 , the first rib 1210 can overlap the groove G1 in the axial direction A of the first cutter head 110 , so that the end of the first fixing member 150 can be inserted and fixed. Please refer to FIG. 4 again, further speaking, the first fixing member 150 may have a connected head 151 and a rod 152 . The head 151 is embedded in the first cutter head 110 from the second surface 113 . The rod portion 152 passes through the first surface 112 and extends into the first rib portion 1210 . In this way, the first fixing member 150 can be further prevented from being loosened by an external force, so as to more firmly fix the first cutter head 110 and the second cutter head 120 . In this embodiment, the first fixing member 150 can be a screw, but the invention is not limited thereto.

Please refer to FIG. 2 and FIG. 3 together. In this embodiment, the second surface 113 further has a knife groove G2, for example, and the first cutter 130 is fixed in the knife groove G2. The sipe G2 is spaced apart from the groove G1 in the circumferential direction C of the first cutterhead 110, and the second surface 113 is formed with a second rib 1121 between the groove G1 and the sipe G2 (also marked in FIG. 4 ). As shown in FIG. 3 , the sipe G2 has a first width W1 in the circumferential direction C, and the second rib 1121 has a second width W2 in the circumferential direction C, and the second width W2 is greater than or equal to the first width W1 . In detail, because the first cutter 130 is fixed between two adjacent second ribs 1121 , the second ribs 1121 can have basic structural strength to further enhance the durability of the first cutter head 110 . In one embodiment, the first width W1 of the sipes G2 is, for example, about 6 mm-20 mm, and the second width W2 of the second rib 1121 is about 6 mm-20 mm, but the present invention is not limited thereto. Incidentally, in this embodiment, the second cutter 140 is fixed between two adjacent first ribs 1210, so the width conditions of the first ribs 1210 can be similar to the width conditions of the second ribs 1121, but this The invention is not limited to this.

Please refer to FIG. 2 and FIG. 4 together, the processing device 100 may further include a second fixing member 160 , and the second fixing member 160 is passed through the second rib 1121 . The first cutter 130 is fixed in the cutter groove G2 via the second fixing member 160 . Specifically, the second fixing member 160 can extend from the groove G1 through the second rib 1121 into the knife groove G2 to fix the first knife 130 . In this embodiment, the second fixing member 160 is, for example, a screw, and the head of the screw can be embedded in the second rib 1121 to prevent loosening. It will be appreciated that the second cutter head 120 can hold the second cutter 140 in a similar manner to the first cutter head 110 . Incidentally, the sipe G2 has a depth D in the axial direction A, and the depth D is, for example, equal to the first width W1. In short, the depth D and the first width W1 of the knife groove G2 can be designed according to the size of the second fixing member 160 and the structural strength requirement of the first knife head 110 . In one embodiment, the depth D of the sipe G2 may be about 6 mm˜20 mm. In another embodiment, the depth D of the groove G1 may be slightly greater than half of the depth D of the groove G1 , such as about 3 mm˜13 mm, but the present invention is not limited thereto.

Incidentally, the processing device 100 further includes a fixing part F, for example. The second cutter 140 may correspond to the groove G1. The fixing part F passes through the first surface 112 from the groove G1 and extends into the second cutter 140 . In this way, the first cutter head 110 and the second cutter head 120 can be further fixed, and the second cutter 140 can also be further fixed. In detail, the orthographic projection of one of the second cutters 140 on the second surface 113 overlaps the groove G1 , and the fixing member F can pass through the first cutter head 110 and extend into the second cutter 140 . Similarly, the part of the fixing part F outside the second cutter 140 can be embedded in the first cutter head 110 to prevent it from falling off from the first cutter head 110 .

Fig. 5 is a schematic diagram of a processing device according to another embodiment of the present invention. Fig. 6 is a schematic diagram showing the separation of the first cutterhead, the second cutterhead and the third cutterhead in Fig. 5 . FIG. 7 is a schematic top view of the processing device in FIG. 5 . The structure and advantages of the processing device 100a of this embodiment are similar to the embodiment of FIG. 1 , and only the differences will be described below. Please refer to FIG. 5 and FIG. 6 , the processing device 100 a further includes a third cutterhead 170 and a third cutter 180 , for example. The third cutterhead 170 has a fourth surface 171 and a third side 172 . The fourth surface 171 faces the second surface 113 (marked in FIG. 6 ), and the third side 172 is connected to the fourth surface 171 . The third cutter 180 is disposed on the third cutter head 170 and has a third processing end 181 protruding from the third side 172 . The first processed end 131 , the second processed end 141 and the third processed end 181 are offset from each other in the axial direction A. As shown in FIG. In short, the second cutterhead 120 and the third cutterhead 170 can be disposed on opposite sides of the first cutterhead 110, so that the number of cutters of the processing device 100a can be further increased.

Furthermore, as shown in FIG. 6 and FIG. 7 , the two first positioning structures 1120 are arranged along the first radial direction R1 of the first cutter head 110 . The two second positioning structures 123 are arranged along the second radial direction R2 of the first cutter head 110 , and the second radial direction R2 and the first radial direction R1 are staggered. The third cutterhead 170 can also have two fourth positioning structures 173 corresponding to the two second positioning structures 123 , and the third cutterhead 170 is disposed on the second surface 113 via the two second positioning structures 123 and the two fourth positioning structures 173 . In detail, the first cutterhead 110, the second cutterhead 120 and the third cutterhead 170 can be three cutterheads formed by the same mold, and the first radial direction R1 between the two first positioning structures 1120 and the second radial direction R2 between the two second positioning structures 123 are arranged to be staggered with each other, so that the first processing end 131 , the second processing end 141 and the third processing end 181 are misaligned with each other in the axial direction A. Furthermore, the first cutterhead 110 , the second cutterhead 120 and the third cutterhead 170 can be arranged substantially coaxially, and the second radial direction R2 and the first radial direction R1 can intersect in the axial direction of the first cutterhead 110 a. Please continue to refer to FIG. 6 , in this embodiment, the two fourth positioning structures 173 may include two second positioning holes H2 corresponding to the two second positioning posts P2 , but the present invention is not limited thereto. Incidentally, the third tool 180 can be arranged along the circumferential direction C (also shown in FIG. 7 ) of the third cutterhead 170 and surrounds the two fourth positioning structures 173 so that the third processing end 181 protrudes from the third side 172 out.

Fig. 8 is a schematic diagram of a processing device according to another embodiment of the present invention. Fig. 9 is a schematic diagram showing the separation of the first cutter head, the second cutter head, and the third cutter head from the cutter cover in Fig. 8 . The structure and advantages of the processing device 100b in this embodiment are similar to the embodiment in FIG. 1 , and only the differences will be described below. Please refer to FIG. 8 and FIG. 9, the processing device 100b may further include a cutter cover 190, the first cutter head 110 is sandwiched between the cutter cover 190 and the second cutter head 120, and the cutter cover 190 can further prevent the first cutter 130 or The third cutter 180 falls off. For example, in this embodiment, the first cutterhead 110 is located between the third cutterhead 170 and the second cutterhead 120, and the third cutter 180 is arranged on the side of the third cutterhead 170 facing away from the first cutterhead 110. surface 174 (marked in FIG. 9 ), and a knife cover 190 covers surface 174 . In this way, the knife cover 190 can further prevent the third knife 180 from falling off from the third knife disc 170 . In addition, please refer to FIG. 1 and FIG. 8 together. In the embodiment in FIG. . Incidentally, please continue to refer to FIG. 8 , the knife cover 190 of this embodiment can be locked to the third knife head 170 via the screw SC, and the head of the screw SC can be embedded in the knife cover 190 to prevent the screw SC from loosened by external force. In the embodiment of FIG. 1 , the knife cover 190 can be locked to the first knife head 110 via a screw SC, and the features of the screw SC are similar to the present embodiment, and related descriptions are omitted here.

Fig. 10 is a schematic diagram of a processing device according to another embodiment of the present invention. FIG. 11 is a schematic diagram of the tool holder in FIG. 10 exposing the tool. The structure and advantages of the processing device 100c of this embodiment are similar to the embodiment of FIG. 8 , and only the differences will be described below. Please refer to FIG. 10 and FIG. 11 , the processing device 100c further includes a tool seat B, for example. The knife cover 190 has a surface 191 facing away from the first knife disc 110 , and the knife seat B is disposed on the surface 191 . Specifically, the tool seat B can be provided with the tool N (shown in FIG. 11 ), thereby further increasing the number of tools of the processing device 100c. It is worth mentioning that the tool holder B can be provided with a tool N having a specification, shape or size different from that of the first tool 130 , the second tool 140 and the third tool 180 , thereby further improving the expandability of the processing device 100 c.

To sum up, the processing device of the present invention adopts the first cutterhead and the second cutterhead that overlap each other, and the first processing end and the second processing end are misaligned in the axial direction of the first cutterhead. Based on the above, the processing device of the present invention can provide more space for arranging knives, so that not only can the number of knives be increased, but also a variety of knives with different specifications can be provided. Therefore, the processing device of the present invention can not only reduce the time cost required for maintenance and maintenance, avoid delaying the processing schedule, but also has the advantage of good expandability.

Although the present invention has been disclosed above with the embodiments, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field of the present invention can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the scope of the appended patent application.

Claims (15)

1. A processing apparatus, comprising:

the first cutter head is provided with a first side surface, a first surface and a second surface, wherein the first surface is opposite to the second surface, and the first side surface is positioned between the first surface and the second surface;

the second cutter head is arranged on the first surface and is provided with a third surface and a second side surface, the third surface faces the first surface, and the second side surface is connected with the third surface;

the first cutter is arranged on the first cutter head and is provided with a first processing end protruding out of the first side face; and

the second cutter is arranged on the second cutter head and is provided with a second processing end protruding out of the second side face;

wherein the first and second machining ends are offset from each other in an axial direction of the first cutterhead.

2. The processing apparatus of claim 1, wherein the first surface has two first positioning structures, the second cutterhead further has two second positioning structures corresponding to the two first positioning structures, and the second cutterhead is disposed on the first surface through the two second positioning structures and the two first positioning structures.

3. The processing apparatus of claim 2, wherein the two first positioning structures comprise two first positioning holes, and the two second positioning structures comprise two first positioning posts corresponding to the two first positioning holes.

4. The apparatus of claim 2 further comprising a third cutterhead having a fourth surface facing the second surface and a third side surface connecting the fourth surface and a third cutter disposed on the third cutterhead and having a third machining end protruding from the third side surface, the first, second and third machining ends being offset from each other in the axial direction.

5. The processing apparatus of claim 4, wherein:

the two first positioning structures are arranged along a first radial direction of the first cutter head;

the second surface is provided with two third positioning structures which are arranged along a second radial direction of the first cutter head and are staggered with the first radial direction;

the third cutterhead is provided with two fourth positioning structures corresponding to the two third positioning structures, and the third cutterhead is arranged on the second surface through the two third positioning structures and the two fourth positioning structures.

6. The processing apparatus of claim 5, wherein the two first positioning structures comprise two first positioning holes, the two second positioning structures comprise two first positioning posts corresponding to the two first positioning holes, the two third positioning structures comprise two second positioning posts, and the two fourth positioning structures comprise two second positioning holes corresponding to the two second positioning posts.

7. The apparatus of claim 5, wherein the first cutter is disposed along a circumference of the first cutter and surrounds the two first positioning structures, the second cutter is disposed along a circumference of the second cutter and surrounds the two second positioning structures, and the third cutter is disposed along a circumference of the third cutter and surrounds the two fourth positioning structures.

8. The apparatus of claim 1, further comprising a first fastener, wherein the second surface has a recess, the third surface has a first rib corresponding to the recess, and the first fastener extends from the recess through the first surface and into the first rib.

9. The machining device of claim 8, wherein the first fixing member has a head portion and a stem portion connected to each other, the head portion being embedded in the first cutterhead from the second surface, the stem portion passing through the first surface and extending into the first rib portion.

10. The machining device of claim 8, wherein the second surface further has a pocket, the first cutter is fixed in the pocket, the pocket is spaced apart from the recess in a circumferential direction of the first cutter head, and the second surface is formed with a second rib between the recess and the pocket, the pocket has a first width in the circumferential direction, the second rib has a second width in the circumferential direction, the second width is greater than or equal to the first width.

11. The apparatus of claim 10, further comprising a second fastener disposed through the second rib, wherein the first tool is secured in the pocket via the second fastener.

12. The machining apparatus of claim 10, wherein the pocket has a depth in the axial direction that is equal to the first width.

13. The apparatus of claim 1, further comprising a fixture, wherein the second surface has a recess, the second tool corresponds to the recess, and the fixture extends from the recess through the first surface and into the second tool.

14. The apparatus of claim 1, further comprising a cutter head, wherein the first cutter head is sandwiched between the cutter head and the second cutter head.

15. The apparatus of claim 13, further comprising a tool holder, wherein the tool cover has a surface facing away from the first tool head, and the tool holder is disposed on the surface.