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 present invention relates to a processing apparatus, and more particularly to a processing apparatus.

Background

With the development of modern technology, the precision of ultra-precision machining (ultraprecision machining) is improved by at least more than one order of magnitude compared with traditional precision machining. Further, ultra-precise machining has special requirements on workpiece materials, machining equipment, tools, measurement, environmental conditions and the like. For example, the workpiece material must be very fine and uniform, the machining apparatus must have very high motion accuracy, and the machining environment must be kept constant temperature, constant humidity and clean air in most cases, so as to ensure that the machining error can be controlled to be at least about 0.1 μm.

In general, in many conventional machining apparatuses, a cutter head is disposed, and a cutter is disposed on the cutter head. However, the number of tools in the existing machining apparatus is limited because of the limited space available for the tools to be secured by the cutterhead. Therefore, the existing processing device often needs to frequently replace the tool, resulting in delay of processing time.

Disclosure of Invention

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

The processing device provided by the invention 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.

In an embodiment of the invention, the first surface may have a first positioning structure. The second cutterhead can be provided with two second positioning structures corresponding to the two first positioning structures, and the second cutterhead is arranged on the first surface through the two second positioning structures and the two first positioning structures.

In an embodiment of the invention, the two first positioning structures include two first positioning holes, and the two second positioning structures include two first positioning posts corresponding to the two first positioning holes.

In an embodiment of the invention, the processing device further includes a third cutter head 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 surface is connected with the fourth surface. The third cutter is arranged on the third cutter head and is provided with a third processing end protruding from the third side face. The first, second and third working ends are axially offset from one another.

In an embodiment of the present invention, the two first positioning structures are arranged along a first radial direction of the first cutterhead. The second surface has two third positioning structures, for example. The second 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 can be 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.

In an embodiment of the invention, the 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 second positioning structure may include two second positioning posts, and the second positioning structure may include two second positioning holes corresponding to the two second positioning posts.

In an embodiment of the invention, the first cutter is disposed along a circumferential direction of the first cutterhead, and surrounds the two first positioning structures. The second cutter can be arranged along the circumferential direction of the second cutter head and surrounds the second positioning structures. The third cutter can be arranged along the circumferential direction of the third cutter head and surrounds the two fourth positioning structures.

In an embodiment of the invention, the 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 piece passes through the first surface from the groove and stretches into the first rib.

In an embodiment of the invention, the first fixing member may have a head portion and a stem portion connected to each other. The head is embedded in the first cutterhead from the second surface. The stem passes through the first surface and extends into the first rib.

In an embodiment of the invention, the second surface further has a tool slot, and the first tool is fixed in the tool slot. The sipe is spaced apart from the groove in a 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 a circumferential direction, and the second rib has a second width in the circumferential direction, the second width being greater than or equal to the first width.

In an embodiment of the invention, the processing device may further include a second fixing member, and the second fixing member is disposed through the second rib. The first cutter is fixed in the cutter groove through the second fixing piece.

In an embodiment of the present invention, the sipe has a depth in an axial direction, and the depth is equal to the first width.

In an embodiment of the invention, the processing device further includes a fixing member, for example. The second surface is provided with a groove, and the second cutter corresponds to the groove. The fixing piece penetrates through the first surface from the groove and stretches into the second cutter.

In an embodiment of the present invention, the processing apparatus may further include a cutter cover, and the first cutter head is sandwiched between the cutter cover and the second cutter head.

In an embodiment of the invention, the processing device further includes a tool post. The cutter cover is provided with a surface opposite to the first cutter head, and the cutter seat is arranged on the surface.

The processing device adopts the first cutter disc and the second cutter disc which are overlapped with 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 staggered with each other in the axial direction of the first cutter disc. Based on the above, the processing device of the invention can provide more space for arranging the cutters, so that the number of the cutters can be increased, and the cutter arrangement of various specifications can be provided. Therefore, the processing device of the invention not only can reduce the time cost required by maintenance and maintenance, avoid delaying the processing time course, but also has the advantage of good expansibility.

The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of the invention, as illustrated in the accompanying drawings.

Drawings

Fig. 1 is a schematic view of a processing apparatus according to an embodiment of the present invention.

Fig. 2 is a schematic illustration of the first cutterhead of fig. 1 separated from the second cutterhead.

Fig. 3 is a schematic top view of the processing apparatus of fig. 1.

Fig. 4 is a schematic side view of the processing device of fig. 1.

Fig. 5 is a schematic view of a processing apparatus according to another embodiment of the present invention.

Fig. 6 is a schematic diagram of the first cutterhead, the second cutterhead, and the third cutterhead of fig. 5 separated.

Fig. 7 is a schematic top view of the processing device of fig. 5.

Fig. 8 is a schematic view of a processing apparatus according to another embodiment of the present invention.

Fig. 9 is a schematic view of the first cutterhead, the second cutterhead, and the third cutterhead of fig. 8 separated from the cover.

Fig. 10 is a schematic view of a processing apparatus according to another embodiment of the present invention.

Fig. 11 is a schematic view of the tool holder of fig. 10 with the tool exposed.

Wherein, the reference numerals:

100. 100a, 100b, 100c processing apparatus

110 a first cutterhead

111 first side

112 first surface

113 second surface

120, second cutterhead

121 third surface

122 second side surface

123 second positioning structure

130 first tool

131 first working end

140 second tool

141 second processing end

150 first fixing piece

151 head part

152 rod portion

160 second fixing piece

170, third cutterhead

171 fourth surface

172 third side

173 fourth positioning structure

174. 191 surface

180 third tool

181 third processing end

190 knife cover

1120 first positioning structure

1121 second rib

1130 third positioning structure

1210 first rib

Aaxial direction

B, knife holder

C, circumferential direction

Depth D

F, fixing piece

G1 groove

G2 knife groove

H1 first positioning hole

H2 second positioning hole

N-type cutter

P1:first positioning column

P2:second positioning column

R1, first radial direction

R2:second radial direction

SC screw

W1 first width

W2 second width

Detailed Description

The invention will now be described in more detail with reference to the drawings and specific examples, which are not intended to limit the invention thereto.

Fig. 1 is a schematic view of a processing apparatus according to an embodiment of the present invention. Fig. 2 is a schematic illustration of the first cutterhead of fig. 1 separated from the second cutterhead. Fig. 3 is a schematic top view of the processing apparatus of fig. 1. Fig. 4 is a schematic side view of the processing device of fig. 1.

Referring to fig. 1 and 2, the processing apparatus 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 and the second surface 113 are opposite, and the first side 111 is located between the first surface 112 and the second surface 113. The second cutterhead 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 connects the third surface 121. The first cutter 130 is disposed on the first cutterhead 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 machining 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 working end 131 and the second working end 141 are offset from each other.

The first cutter head 110 and the second cutter head 120 are, for example, disc-shaped, and the second cutter head 120 may be stacked on the first cutter head 110 along the axial direction a of the first cutter head 110. Further, the first cutterhead 110 and the second cutterhead 120 may be disposed substantially coaxially and may be disposed on a machine axis of the processing machine, but the present invention is not limited to the application of the processing apparatus 100.

Referring to fig. 2 and 3, in the present embodiment, the first surface 112 (shown in fig. 2) may have two first positioning structures 1120, wherein the two first positioning structures 1120 of the present embodiment are exemplified by two first positioning holes H1; further, the two first positioning holes H1 are, for example, through holes passing through the first surface 112 and the second surface 113, but the specific features of the two first positioning structures 1120 are not limited in the present invention. In the present embodiment, the second cutterhead 120 has two second positioning structures 123 corresponding to the two first positioning structures 1120, and the second cutterhead 120 is disposed on the first surface 112 via the two second positioning structures 123 and the two first positioning structures 1120. In detail, the two first positioning structures 1120 are disposed around the axial direction a of the first cutterhead 110, for example. On the other hand, the shape of the second positioning structures 123 may be complementary to the shape of the first positioning structures 1120, and the positions of the second positioning structures 123 may correspond to the positions of the first positioning structures 1120. Thus, the two first positioning structures 1120 can be combined with the two second positioning structures 123, so that the first cutterhead 110 and the second cutterhead 120 are overlapped with each other and can be arranged substantially coaxially. In detail, as described 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. Thus, the second cutter 120 can be overlapped on the first surface 112 of the first cutter 110 by aligning the two first positioning posts P1 of the second cutter 120 and extending into the two first positioning holes H1 of the first cutter 110. Incidentally, in the present embodiment, the first cutter head 110 and the second cutter head 120 are, for example, two cutter heads formed by using the same mold, and the first cutter 130 and the second cutter 140 can be offset from each other in the axial direction a through the position design of the two first positioning structures 1120 and the two second positioning structures 123.

In the present embodiment, the first cutter 130 and the second cutter 140 are, for example, diamond cutters, but the present invention is not limited thereto. In addition, the first processing end 131 is, for example, an end of the first tool 130 for processing the workpiece, and the present embodiment is illustrated as a tip of the first tool 130, but other embodiments are not limited thereto. Similarly, the second processing end 141 is, for example, an end of the second tool 140 for processing the workpiece, and the embodiment is shown as the tip of the second tool 140, but the invention is not limited thereto. The first cutter 130 of the present embodiment is disposed along, for example, a 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 may be disposed along the circumferential direction C of the second cutterhead 120 and surrounds the second positioning structures 123. Specifically, the first cutter 130 may be disposed along an edge of the second surface 113, and surrounds the axial direction a of the first cutterhead 110 along with two first positioning structures 1120 and two third positioning structures 1130. Similarly, the second cutter 140 may be disposed along an edge of the third surface 121 and around the axial direction a of the first cutterhead 110 along with the second positioning structure 123.

Compared to the prior art, the machining apparatus 100 of the present embodiment employs the first cutter head 110 and the second cutter head 120 stacked on each other, and the first machining end 131 and the second machining end 141 are offset from each other in the axial direction a of the first cutter head 110. Based on the above, the processing apparatus 100 of the present embodiment can provide more space for setting tools, so that not only the number of tools can be increased, but also a plurality of different specifications of tool settings can be provided. Therefore, the processing apparatus 100 of the present embodiment not only can reduce the time cost required for maintenance and maintenance, avoid delaying the processing time, but also has the advantage of good expandability.

Referring to fig. 2 and 4, incidentally, the processing apparatus 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 cutterhead 110 and the second cutterhead 120. Specifically, the groove G1 may reduce a thickness of a portion of the first cutterhead 110 so as to allow the first fixture 150 to pass through. In addition, as shown in fig. 3, the first rib 1210 may overlap the groove G1 in the axial direction a of the first cutterhead 110, so that the end of the first fixing member 150 extends into and is fixed. Referring to fig. 4, further, the first fixing member 150 may have a head 151 and a stem 152 connected to each other. The head 151 is embedded in the first cutterhead 110 from the second surface 113. The stem 152 passes through the first surface 112 and extends into the first rib 1210. In this way, the first fixing member 150 can be further prevented from being released by external force, and the first cutterhead 110 and the second cutterhead 120 can be further firmly fixed. In the present embodiment, the first fixing member 150 may be a screw, but the present invention is not limited thereto.

Referring to fig. 2 and 3 together, the second surface 113 of the present embodiment further has a pocket G2, and the first cutter 130 is fixed in the pocket G2. The pocket G2 is spaced apart from the groove G1 in the circumferential direction C of the first cutterhead 110, and the second surface 113 forms a second rib 1121 (also shown in fig. 4) between the groove G1 and the pocket G2. As shown in fig. 3, the pocket 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, the second width W2 being greater than or equal to the first width W1. In detail, since the first cutter 130 is fixed between two adjacent second ribs 1121, the second ribs 1121 may have a basic structural strength to further enhance the durability of the first cutterhead 110. In an embodiment, the first width W1 of the pocket G2 is about 6mm to 20mm, and the second width W2 of the second rib 1121 is about 6mm to 20mm, but the invention is not limited thereto. Incidentally, in the present embodiment, the second cutter 140 is fixed between two adjacent first ribs 1210, so the width condition of the first ribs 1210 may be similar to the width condition of the second ribs 1121, but the present invention is not limited thereto.

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

Incidentally, the processing apparatus 100 further includes a fixing member F, for example. The second tool 140 may correspond to the groove G1. The fixture F passes from the recess G1 through the first surface 112 and into the second tool 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, an orthographic projection of one of the second cutters 140 on the second surface 113 is overlapped with the groove G1, for example, and the fixing member F may pass through the first cutter head 110 and extend into the second cutter 140. Similarly, the portion of the fixture F outside the second cutter 140 may be buried in the first cutter head 110 to prevent falling off from the first cutter head 110.

Fig. 5 is a schematic view of a processing apparatus according to another embodiment of the present invention. Fig. 6 is a schematic diagram of the first cutterhead, the second cutterhead, and the third cutterhead of fig. 5 separated. Fig. 7 is a schematic top view of the processing device of fig. 5. The processing apparatus 100a of the present embodiment is similar to the embodiment of fig. 1 in structure and advantage, and only differences are described below. Referring to fig. 5 and 6, the processing apparatus 100a 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 (shown in fig. 6), and the third side 172 connects to the fourth surface 171. The third cutter 180 is disposed on the third cutterhead 170 and has a third machining end 181 protruding from the third side 172. The first, second and third working ends 131, 141 and 181 are offset from each other in the axial direction a. In short, the second cutterhead 120 and the third cutterhead 170 may be disposed on opposite sides of the first cutterhead 110, which can further increase the number of cutters of the processing apparatus 100 a.

Further, as shown in fig. 6 and 7, the two first positioning structures 1120 are arranged along the first radial direction R1 of the first cutterhead 110. The second positioning structures 123 are arranged along the second radial direction R2 of the first cutterhead 110, and the second radial direction R2 and the first radial direction R1 are staggered. The third cutterhead 170 further has 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 through the two second positioning structures 123 and the two fourth positioning structures 173. In detail, the first cutter head 110, the second cutter head 120 and the third cutter head 170 may be three cutter heads molded by the same mold, and the first processing end 131, the second processing end 141 and the third processing end 181 may be offset from each other in the axial direction a by arranging 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 to be staggered with each other. Further, the first cutter head 110, the second cutter head 120, and the third cutter head 170 may be disposed substantially coaxially, and the second radial direction R2 and the first radial direction R1 may intersect the axial direction a of the first cutter head 110. With reference to fig. 6, in the present embodiment, the second 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 cutter 180 may be disposed along the circumferential direction C (also shown in fig. 7) of the third cutterhead 170 and around the two fourth positioning structures 173 such that the third processing end 181 protrudes from the third side 172.

Fig. 8 is a schematic view of a processing apparatus according to another embodiment of the present invention. Fig. 9 is a schematic view of the first cutterhead, the second cutterhead, and the third cutterhead of fig. 8 separated from the cover. The processing apparatus 100b of the present embodiment is similar to the embodiment of fig. 1 in structure and advantage, and only differences are described below. Referring to fig. 8 and 9, the processing apparatus 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 from falling off. For example, in the present embodiment, the first cutter head 110 is located between the third cutter head 170 and the second cutter head 120, the third cutter 180 is disposed on a surface 174 (shown in fig. 9) of the third cutter head 170 opposite to the first cutter head 110, and the cutter cover 190 covers the surface 174. In this way, the cover 190 can further prevent the third cutter 180 from falling off the third cutterhead 170. In addition, referring to fig. 1 and 8, in the embodiment of fig. 1, the cutter cover 190 may cover the second surface 113 of the first cutter head 110 to further prevent the first cutter 130 from falling off the first cutter head 110. Incidentally, with continued reference to fig. 8, the cover 190 of the present embodiment may be locked to the third cutterhead 170 via the screw SC, and the head of the screw SC may be embedded in the cover 190 to prevent the screw SC from being loosened due to external force. In the embodiment of fig. 1, the blade cover 190 may be locked to the first cutterhead 110 via a screw SC, and features of the screw SC are similar to those of the present embodiment, and related descriptions are omitted here.

Fig. 10 is a schematic view of a processing apparatus according to another embodiment of the present invention. Fig. 11 is a schematic view of the tool holder of fig. 10 with the tool exposed. The processing apparatus 100c of the present embodiment is similar in structure and advantage to the embodiment of fig. 8, and only differences are described below. Referring to fig. 10 and 11, the processing device 100c further includes a tool holder B, for example. The cutter cover 190 has a surface 191 facing away from the first cutter head 110, and the cutter seat B is disposed on the surface 191. Specifically, the tool holders B may be provided for tools N (shown in fig. 11), so as to further increase the number of tools of the processing apparatus 100 c. It should be noted that the tool rest B may be provided for the tools N having different specifications, shapes or sizes from the first tool 130, the second tool 140 and the third tool 180, so as to further enhance the expandability of the processing apparatus 100 c.

In summary, the processing device of the present invention adopts the first cutter and the second cutter that are overlapped with each other, and the first processing end and the second processing end are offset from each other in the axial direction of the first cutter. Based on the above, the processing device of the invention can provide more space for arranging the cutters, so that the number of the cutters can be increased, and the cutter arrangement of various specifications can be provided. Therefore, the processing device of the invention not only can reduce the time cost required by maintenance and maintenance, avoid delaying the processing time course, but also has the advantage of good expansibility.

Although the present invention has been described with reference to the above embodiments, it should be understood that the invention is not limited thereto, but rather is capable of modification and variation without departing from the spirit and scope of the present invention.

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.