JPH10277832A - Tool set holder and cutting method using the same - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To form a plurality of grooves having different depths in a workpiece by using a plurality of tools, so that relative position adjustment between each tool and the workpiece can be performed collectively. . SOLUTION: A plurality of bytes 40a, 40b,.
Is attached to the tool set holder 10. This tool set holder 10 is a tool table 2 on which each tool is fixed.
., 40f fixed to the byte bases 20, 20,... 40f are parallel to each other and movable in the cutting direction C of the byte bases 20, 2,.
And bases 11 for supporting 0,.
40f are individually moved in the cutting direction C to adjust the positions of the cutting tools in the cutting direction C.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool set holder for holding a tool used for planing or shaping, and a cutting method using the same.

[0002]

2. Description of the Related Art Conventionally, when a plurality of grooves having different depths are formed in a flat plate, the flat plate is machined using a full-form bite having a cutting edge portion corresponding to each groove shape, or a plurality of single-cutting bits are formed. Is used to process flat plates.

However, when the difference between the depths of the plurality of grooves is small, the manufacturing cost of the complete cutting tool is very high. Further, when the difference between the depths of the grooves is several tens of microns to several microns, Manufacture of the form bite is virtually impossible. For this reason, in the case where a plurality of relatively fine grooves are formed with high precision, at present, processing is mostly performed using a plurality of single-blade cutting tools.

[0004] When a plurality of relatively fine grooves are formed using a plurality of single-edged tools, the accuracy of the difference in depth between the plurality of grooves is determined by the mounting accuracy of each single-edged tool and the positioning accuracy of the processing machine. In other words, it depends on the relative positional accuracy between each single blade tool and the workpiece. Therefore, first, a single incision tool is used to perform micro-cutting on the workpiece, and the machining depth at this time is measured with a measuring instrument such as a tool microscope or an electric micro. After calculating the relative position of, the workpiece is machined with this single-edged tool, then this single-edged tool is removed from the machine and another single-edged tool is attached to the machine. Similarly, the workpiece is machined from the relative position with respect to the workpiece. Since a series of these operations, that is, minute cutting for adjustment, measurement with a tool microscope, and the like are all delicate operations, considerable skill is generally required.

[0005]

However, in the case of machining a plurality of relatively fine grooves using a plurality of single-edged tools, each time the single-edged tool is changed, a minute notch for adjustment, a tool microscope, or the like is used. Set, measurement using this tool microscope, etc., and adjustment of the relative position between the single-edged bite and the workpiece based on the measurement results, which has the problem that it takes a lot of time and labor. . Furthermore, when measuring with a tool microscope, etc., there is a difference in the measurement results depending on the measurement direction, etc., so if you set a tool microscope, etc. every time you change the single-edged tool, the measurement results for each single-edged tool will vary, and the results will vary. There is also a problem that a plurality of fine grooves cannot be processed with high accuracy.

Accordingly, the present invention focuses on such conventional problems, and makes it possible to form a plurality of relatively fine grooves and the like with high accuracy in a relatively short time and without much trouble. An object of the present invention is to provide a set holder and a cutting method using the tool set holder.

[0007]

According to a first aspect of the present invention, there is provided a tool set holder for maintaining a state in which a plurality of the tools are arranged substantially in parallel with each other and a plurality of the tools in a state substantially parallel to each other. And a byte position adjusting means for individually moving the plurality of bytes relative to the base in the cutting direction to adjust the positions of the plurality of bytes in the cutting direction. It is characterized by the following.

[0008] Here, the byte position adjusting means includes: a plurality of byte tables to which the plurality of bytes are respectively fixed; and a plurality of the bit tables individually movable relative to the base in the cutting direction. There may be provided a position adjusting member that connects the base and the plurality of cutting tools and adjusts the position of each cutting tool fixed to the plurality of cutting tools in the cutting direction. In this case, it is preferable that a protrusion is formed on one of the plurality of cutting tools and the base, and the other is fitted with the protrusion to form a guide groove that is long in the cutting direction.

[0009] In addition, a cutting method for achieving the above object comprises a plurality of tools necessary for cutting a workpiece, a tool set holder having a plurality of tools mounted thereon, and the workpiece fixed. And a cutting device provided with a moving means for relatively moving the table and the head, and a plurality of the cutting tools are attached to the cutting tool holder. At the same time, the tool set holder is fixed to the head, the workpiece is fixed to the table, and one of a plurality of bytes is set as a reference byte, and the moving unit is driven to drive the tool. Moving the cutting edge to a target position with respect to the workpiece, setting the target position of the reference bit with respect to the cutting edge as a reference position, and excluding the reference bit. With regard to the cutting tool, the cutting tool position adjusting means adjusts the position of the cutting edge of the cutting tool in the cutting direction to the reference position, or to a position at a predetermined distance from the reference position, for the other cutting tool, In the direction perpendicular to the cutting direction, the relative position of the cutting edge of the other cutting tool with respect to the reference position is measured, and the cutting edge of the other cutting tool is positioned relative to the reference position in the cutting direction, and perpendicular to the cutting direction. The relative position of the cutting edge of the other bite with respect to the workpiece is determined from the position with respect to the reference position in a desired direction, and based on the relative positions of the plurality of bits with respect to the workpiece, each bite with respect to the workpiece is determined. Characterized in that the moving means is operated so that the operation of Than it is.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A tool set holder according to an embodiment of the present invention and a cutting method using the tool set holder will be described below.

First, a tool set holder according to an embodiment of the present invention will be described with reference to FIGS. As shown in FIG.
Are fixed to a plurality of byte bases 20, 20,... To which the bytes 40a, 40b,.
40f are parallel to each other and can move in parallel so that the base 11 supports the plurality of cutting tools 20, 20,..., And connects the base 11 and the cutting tools 20, 20,. Bites 20, 20, ... for
Position adjustment bolts 30, 30, ... for adjusting the relative positions of
And

The tool 40 attached to the tool set holder 10 has a blade 41 and a shank 42 to which the tool 41 is fixed. The shank 42 has a substantially rectangular parallelepiped shape, and the blade 41 is fixed to one end of the shank 42 in the longitudinal direction C.

As shown in FIG. 3, each of the bite tables 20, 20,... Has an inverted L-shaped side surface, and a portion corresponding to the long side of L forms a bite receiving seat portion 21, The portion corresponding to the short side of L constitutes the bite rotation restricting portion 25. The tool receiving seat portion 21 has a substantially rectangular parallelepiped shape, and the shank 42 of the tool 40 contacts one surface (hereinafter referred to as a tool contact surface) 22 of two opposing surfaces parallel to the longitudinal direction thereof, A guide projection 24 is formed on the other surface (hereinafter, referred to as a sliding contact surface) 23. The bite rotation restricting portion 25 is formed with a bite rotation restricting surface 26 with which an end face of a substantially rectangular parallelepiped shank 42 contacts. In addition, the cutting tool contact surface 22 and the cutting tool rotation regulating surface 26 form 90 °. With the shank 42 of the tool 40 in contact with the tool contact surface 22, the tool holders 20, 20,... Are screwed into the tool receiving seat 21 through the shank 42 by tool fixing bolts 29. , Byte 40 are fixed.
Each of the byte tables 20, 20,...
A screw hole 28 parallel to the longitudinal direction of the cutting tool 40 fixed to 0, 20,... Is formed.

As shown in FIG. 2, the base 11 has an inverted L-shaped side surface, a portion corresponding to the long side of the L forms a bite base sliding contact portion 12, and a side corresponding to the end of the L. Corresponding portions constitute the position adjusting bolt mounting portion 15. As shown in FIG. 1, a plurality of bite tables 20, 20,... Are attached to the bite table sliding contact portion 12 of the base 11 so as to be parallel to each other and to be individually movable in parallel. As shown in FIG. 3, each of the bite tables 20,
Are fitted in the guide projections 24, 24,..., And are long in the direction parallel to the longitudinal direction C of the cutting tool fixed to each of the cutting tools 20, 20,.
Are formed. A bolt hole 18 penetrating in a direction parallel to the longitudinal direction C of the cutting tool fixed to the cutting tools 20, 20,...
Are formed by the quantity of the bite tables 20, 20,....

As shown in FIG. 3, the position adjusting bolt 30 has a bolt shaft 31 and a bolt head 33 fixed to an end of the bolt shaft 31, similarly to a normal bolt. And a link-shaped receiving seat 32 fixed in the middle of the bolt shaft portion 31. The position adjusting bolt 30 has a bolt shaft 31 that is formed in the bolt hole 1 of the base 11.
8 and is screwed into the screw hole 28 of the bite table 20. Bolt head 33 and receiving seat 32 of position adjusting bolt 30
Is approximately equal to the thickness of the position adjusting bolt mounting portion 15 of the base 11. For this reason, the position adjustment bolt 3
0 cannot move in the direction in which the bolt hole 18 of the base 11 extends. However, the position adjusting bolt 30 can freely rotate with respect to the base 11. A coil spring 39 is disposed between the receiving seat 32 of the position adjusting bolt 30 and the cutting tool 20 to prevent the position adjusting bolt 30 from rattling.

With the above configuration, when any of the position adjusting bolts 30 is rotated, the rotated position adjusting bolt 30 is rotated.
The tool bit 20 into which the bolt is screwed moves in the direction in which the bolt shaft portion 31 extends, in other words, in the longitudinal direction C of the tool bit 40, while being guided by the guide groove of the base 11.
In the above description, since the shape of the shank 42 of the cutting tool 40 is a substantially rectangular parallelepiped, for convenience, the moving direction of each cutting tool 40 with respect to the base 11 of the cutting tool set 10 is expressed as the longitudinal direction. ,Correctly,
The cutting direction of the cutting tool (the direction in which the depth of the groove increases when cutting the groove with the cutting tool) is C.

Next, a cutting method using the tool set holder 10 described above will be described.

In this embodiment, for convenience, it is assumed that a male mold for forming the ink jet head component 60 shown in FIG. 6 is formed by cutting. Inkjet head parts 6
Numeral 0 denotes an ink reservoir 61 in which ink is stored, and a plurality of ink flow channels 63, 63,... Communicating with the ink reservoir 61. The plurality of ink flow grooves 63 are separated from each other by a flow path partition 62. In the ink flow channel 63, a plurality of flow channels 63b, 63c,..., 63h are arranged in series, and their groove depths are different from each other. For this reason, as shown in FIG. 7, the male mold 70 that forms the inkjet head component includes a flow path partition forming section 72 that forms the flow path partition 62, and a plurality of protrusions that protrude from the flow path partition forming section 72. , 63h
, A plurality of flow path forming projections 73b, 73c,.
73 h, and an ink pool forming convex portion 71 protruding from the channel partition wall forming portion 72. Here, for the convenience of the following description, each of the molding projections 71, 73b, 73
The top surface of each of the grooves c,..., 73h, that is, the surface for forming the bottom surface of each groove is designated as surface a, b
Plane, c-plane, d-plane, e-plane, f-plane, g-plane, h-plane, and i-plane. The i-plane is at the same level as the upper surface of the flow path partition wall forming section 72, and the i-plane portion is finally cut and removed.

The cutting device used in the cutting method of this embodiment is an NC control cutting device, as shown in FIGS.
A table 51 on which a workpiece is placed while moving in the X and Y directions perpendicular to each other in a horizontal plane, a head 52 which moves in a vertical direction (Z direction) and on which the tool set holder 10 is mounted, a table 51 and a head 52 And a control unit (not shown) for controlling the operation of the moving mechanism. The table 51 of the cutting device 50 is moved using a static pressure slide mechanism.

In this embodiment, the cutting tools 40a, 40b,... 40f for forming the above-described male mold 70 for forming an ink jet head have a shank 42 made of a super-steel alloy and a cutting edge made of diamond. Is what it is. In this embodiment, the base 11 and the bit bases 20 and 2 constituting the bit set holder 10 are used.
Each of 0,... Is formed of an invar material having a small thermal expansion.

First, the tool set holder 10 is fixed to the head 52 of the cutting device 50 (step 1). On this occasion,
Using an electric micro or the like, measure the angle between the bite table sliding portion 12 of the bite set holder 10 and the table 51, and
Tool set holder 1 so that this angle is 90 °
0 is firmly fixed to the head 52. That is, each tool 40 attached to this tool set holder 10
The tool set holder 10 is fixed to the head 52 so that the cutting direction C of the cutting tool is accurately oriented in the Z direction of the cutting device.
Subsequently, the work fixing jig 53 is fixed on the table 51, and the work W made of brass is fixed on the work fixing jig 53 (step 2).

Next, in FIG. 4, a tool 40a to be attached to the tool table 20 on the most (+) Z side (the rightmost tool in FIG. 1) of the tool set holder 10 is used as a reference tool.
The reference bite 40a is brought into contact with the bite contact surface 22 and the bite rotation regulating surface 26 of the bite table 20, and the reference bite 40a is fixed to the bite table 20 with the bite fixing bolt 29.
(Step 3). When the reference tool 40a is attached to the tool set holder 10, a tool microscope is set on the table 51, and while viewing the tool microscope,
By operating the moving mechanism, the cutting edge of the reference cutting tool 40a is brought into contact with the workpiece W on the table 51 (step 4). Then, the position of the cutting edge of the reference cutting tool 40a is input to the control unit of the cutting device 50 as a reference position (step 5).

Next, the byte 40b to be attached next to the reference byte 40a is attached to the byte base 2 in the same manner as the reference byte 40a.
0, and operating the position adjustment bolt 30 while viewing the cutting edge of the cutting tool 40b with a tool microscope.
The position of the cutting edge in the Z direction of 0b is adjusted to the reference position. Similarly, the remaining cutting tools 40c, 40d,... 40f are fixed to the cutting tools 20, 20,..., And the positions of the cutting edges of the cutting tools 40c, 40d,.

All bytes 40a, 40b,... 40f
Are attached to the tool set holder 10, the intervals between the cutting edges of the tools 40a, 40b,... 40f in the X direction are measured on a micron order with a tool microscope (step 7). Then, the measurement result is input to the control unit of the cutting device 50 (Step 8).

The above steps 1 to 8 may be performed in the order described above, but the present invention is not limited to this, and may be performed in another order. Good. For example, before fixing the tool set holder 10 to the head 52 of the cutting device 50 (step 1), the workpiece W is fixed on the table 51 (step 2).
May be. Before the tool set holder 10 is fixed to the head 52 of the cutting device 50 (step 1), each of the tools 40a, 40b,.
0 (Steps 3 and 6), and in this process, another cutting tool 4 is positioned at the position of the cutting edge of the reference cutting tool 40a in the Z direction.
40f are aligned with each other, and the distance between the cutting edges of each cutting tool 40a, 40b,... 40f is measured (step 7), and then each cutting tool 40a, 40b,.
0f is fixed to the cutting device 50 (step 1).
The cutting edge in the Z direction is brought into contact with the workpiece W (step 4), and the position of the cutting edge of the reference cutting tool 40a is input to the control unit of the cutting device 50 as a reference position (step 5), and each cutting tool 40a, 40b, .. May be inputted to the control unit of the cutting device 50 in the X direction at 40f (step 8).

The control unit of the cutting device 50 determines that the cutting edges of all the cutting tools 40a, 40b,... 40f are at the reference position in the Z direction, and the cutting edges of the cutting tools 40a, 40b,. .. 40f are determined relative to the workpiece W assuming that the position relative to the reference position is based on the measurement value input in step 8 (step 9). .. 40f, relative to the workpiece W, in other words, the cutting edges of the cutting tools 40a, 40b,... 40f with respect to the reference position. Are incorporated (step 10).

When the above-described steps 1 to 10 are completed, the operator gives an instruction to start cutting to the control unit of the cutting device 50, and operates the moving mechanism of the cutting device 50, thereby The cutting of the workpiece W by the cutting tools 40a, 40b,... 40f is started (step 11).

In the actual cutting operation, as shown in FIG. 8A, first, the surface a is machined by the cutting tool 40c. At that time, the moving mechanism of the cutting device 50 is operated to first adjust the position of the cutting edge of the cutting tool 40c in the X direction to a target position, and then the cutting tool 40c is moved to a position where the cutting edge of the cutting tool 40c is cut into the workpiece W. The table 40 is moved in the Y direction while the tool 40c is moved in the Z direction and the cutting tool 40c is fixed at this position, and the workpiece W is cut with the cutting tool 40c. When the cutting by the movement of the table 51 in the Y direction is completed, the table 51 is slightly moved in the X direction, and then the table 51 is moved in the Y direction again to cut the workpiece W. The above operation is repeated to process the surface a.

When the a-plane is formed, as shown in FIG. 8B, the g-plane is machined in the same manner as the a-plane machining with the cutting tool 40c. When the g-plane is formed, as shown in FIG. 8C, the b-plane and the c-plane are processed by the cutting tool 40c.

When the b-plane and the c-plane are formed, FIG.
As shown in (4), the d, e and f surfaces are machined with a cutting tool 40d. Also in the cutting by the cutting tool 40d, after adjusting the position of the cutting edge of the cutting tool 40d in the X direction to the target position, the cutting tool 40d is moved in the Z direction until the cutting edge of the cutting tool 40d is cut into the workpiece W, and , Byte 40d is fixed at this position, and table 51
Is moved in the Y direction, and the workpiece W is cut by the cutting tool 40d. When the cutting by the movement of the table 51 in the Y direction is completed, the table 51 is slightly moved in the X direction,
Again, the table 51 is moved in the Y direction to cut the workpiece W. The above operations are repeated to process the d-plane, e-plane, and f-plane.

After the d-plane, e-plane, and f-plane are formed, the h-plane and the i-plane are machined with a cutting tool e, as shown in FIG.

When the a-plane, b-plane,..., I-plane are formed on the workpiece W, the workpiece W is removed from the workpiece fixing jig 53 (step 12), and the i-plane portion of the workpiece W is removed. Then, the male mold 70 is completed. After the above-described cutting, the workpiece W may be immersed in a chemical polishing liquid or the like for the purpose of removing burrs formed at the corners of the workpiece W or the like.

As described above, in this embodiment, a plurality of bytes 40a, 40b,..., 40f are successively set in the byte set holder 10, and each byte 40a, 40b,.
.., 40f and the relative position of the workpiece W are collectively adjusted, so that each time a cutting tool is used, a small notch for adjustment, a set of a tool microscope, and the like are used. Measurement, and the relative position adjustment between the tool and the workpiece based on the measurement result becomes unnecessary.
A plurality of fine grooves can be formed in a short time and without much trouble. In particular, in this embodiment, each cutting tool is attached to the cutting tool set holder 10 so that each cutting direction C is parallel, and each cutting tool 40a, 40b,.
.. 40f in the cutting direction C can be easily adjusted to the reference position. Furthermore, in this embodiment, once the tool microscope or the like is set, the position of the cutting edge of each of the cutting tools 40a, 40b,... 40f can be measured in the set state. A simple groove can be machined with high accuracy.

When the male mold 70 was actually cut by the cutting method described above using the tool set holder 10 described above, the maximum roughness of the processed surface was 0.1 μm or less. It was also confirmed that the dimensional error was reduced to 0.5 μm or less and that there was repeated stability.

In the above embodiment, the position of the bite table 20 is changed by the bite position adjustment bolt 30. Instead of the bite position adjustment bolt 30, for example, the position between the base 11 and the bite table 20 is changed. A piezo element may be provided, the piezo element may be used to connect the cutting tool base 20 to the base, and the voltage applied to the piezo element may be controlled to change the position of the cutting tool table 20.

In the above embodiment, the cutting edges of all the cutting tools are uniformly set to the reference position in the Z direction. However, the cutting edges of a certain cutting tool are set at a position slightly shifted from the reference position, and the shift amount is set. May be input to the control unit. For example, the step between the a-plane and the g-plane is 20 microns, and a
When the surface is machined with the tool 40c and the g surface is machined with the tool 40d, the cutting edge of the tool 40c is positioned at the reference position in the Z direction, and the tool 40d is moved from the reference position to (+) Z.
The direction is shifted by 20 microns, 20 microns is input to the control unit, and the byte 40c and the byte 40d are used.
The a-plane and the g-plane may be cut at a time.

[0037]

According to the present invention, a plurality of tools can be continuously attached to the tool set holder, and the relative position between each tool and the workpiece can be adjusted collectively.
Each time a cutting tool is used, a minute cut for adjustment, setting of a tool microscope, etc., measurement using the tool microscope, etc., and adjustment of the relative position between the cutting tool and the workpiece based on the measurement result are performed. This eliminates the necessity, and a plurality of fine grooves can be formed in a short time and without much trouble. Furthermore, according to the present invention, once the tool microscope or the like is set, the position of the cutting edge of each cutting tool can be measured in the set state, so that the measurement results are less scattered and the plurality of fine grooves are accurately machined. be able to.

[Brief description of the drawings]

FIG. 1 is a front view of a tool set holder as one embodiment according to the present invention.

FIG. 2 is a view taken in the direction of the arrow II in FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a front view of a cutting device as one embodiment according to the present invention.

FIG. 5 is a view as seen from the arrow V in FIG. 4;

FIG. 6 is a perspective view of an inkjet head component.

FIG. 7 is a cross-sectional view of a male mold for molding an inkjet head component.

FIG. 8 is an explanatory view showing a processing procedure as one embodiment according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Tool set holder, 11 ... Base, 12 ... Tool holder sliding contact part, 14 ... Guide groove, 15 ... Position adjustment bolt mounting part, 18 ... Bolt hole, 20 ... Tool holder, 21 ... Tool holder seat part, 22 ... Tool contact surface, 24 ... guide convex part, 2
5: Tool rotation restricting portion, 26: Tool rotation restricting surface, 28
... Screw hole, 29 ... Bite fixing bolt, 30 ... Bite position adjusting bolt, 31 ... Bolt shaft part, 32 ... Receiving seat, 33 ...
Bolt head, 40, 40a, 40b, 40c, 40d, 4
0e, 40f: Tool, 41: Blade, 42: Shank, 5
0: Cutting device, 51: Table, 52: Head, 60:
Inkjet head parts, 61 ... Ink pool, 62 ...
Channel partition, 63 ... Ink channel, 63b, 63c, 63
d, 63e, 63f, 63g, 63h ... flow path part, 70 ...
Male mold for forming inkjet head parts, 71: convex portion for forming ink reservoir, 72: channel partition wall forming portion, 73b, 73
c, 73d, 73e, 73f, 73g, 73h...

Claims (4)

[Claims] 1. A tool set holder to which a tool is attached, wherein a base on which a plurality of the tools are arranged substantially in parallel with each other;
Byte position adjusting means for individually moving the plurality of bytes relative to the base in the cutting direction to adjust the positions of the plurality of bytes in the cutting direction, respectively. Tool set holder. 2. The tool set holder according to claim 1, wherein said tool position adjusting means comprises: a plurality of tool tables to which a plurality of said tools are fixed; and a plurality of said tool tables in said cutting direction with respect to said base. A position adjusting member that connects the base and the plurality of bites so as to be relatively movable individually and adjusts the positions of the respective bits fixed to the plurality of bites in the cutting direction, respectively. A tool set holder comprising: 3. The tool according to claim 2, wherein one of the plurality of cutting tools and the base has a convex portion, and the other has the convex portion fitted therein, and the guide is long in the cutting direction. A tool set holder characterized in that a groove is formed. 4. A cutting method for cutting a workpiece using a plurality of bits, wherein a plurality of bits necessary for cutting the workpiece and a plurality of the bits are attached. A cutting device comprising: a tool set holder according to claim 1; a table to which the workpiece is fixed; a head to which the tool set holder is fixed; and a moving unit for relatively moving the table and the head. Are prepared in advance, and a plurality of the tools are attached to the tool set holder, the tool set holder is fixed to the head, the workpiece is fixed to the table, and one of the tools is selected from a plurality of tools. Using the cutting tool as a reference cutting tool, the moving means is driven to move the cutting edge of the reference cutting tool to a target position with respect to the workpiece. The reference position is a target position to be set, and for the other bytes except the reference bit, the position of the cutting edge of the other bit in the cutting direction is adjusted to the reference position by the bit position adjusting means, or the reference position is set. With respect to the position of a predetermined distance from, for the other cutting tool, in a direction perpendicular to the cutting direction, measure the relative position of the cutting edge of the other cutting tool with respect to the reference position, From the position with respect to the reference position in the cutting direction and the position with respect to the reference position in a direction perpendicular to the cutting direction, a relative position of the cutting edge of the other bite with respect to the workpiece is determined, and Based on the respective relative position with respect to the workpiece, the operation of each bite with respect to the workpiece can be adjusted to a respective desired operation. A cutting method, wherein the moving means is operated so as to produce a work.