JP2000272293A - Sculpture depth control unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To set a sculpturing depth by a nose guard in a state having a chip collection adapter secured to the nose guard by disposing a chip collection part or the like being rotatably fitted in an interposed part, and having an opening for collecting cut pieces generated by cutting an object to be sculptured by the blade of a cutter. SOLUTION: This sculpture depth control unit 10 is formed by disposing a nose guard 30 combined by screwing a nose guard screw part 32a in the main screw part 114b of a main shaft 1114, a chip collection attachment 20 fastened on the outer circumference thereof by a set screw, and a chip collection adaptor 40 arranged sliding rotatably on the outer circumference thereof. The cutter 112 and the nose guard 30 are dimensionally designed so that the blade 112a of the cutter 112 projects downward of a tip end opening part 34a of the tip end part of the nose guard 30. Also, the nose guard 30 and chip collection adapter 40 are dimensionally set so that the opening end part 34a projects downward of a chip collection opening 42b of the chip collection adapter 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engraving depth adjusting unit, and more particularly, to a unit used for cutting an object to be engraved in a two-dimensional engraving apparatus such as a two-dimensional engraving apparatus. Sculpture depth adjustment unit.

[0002]

2. Description of the Related Art Conventionally, a microcomputer, a cutter for cutting an object to be engraved such as a thermoplastic resin material or a light metal material, and a motor for moving the cutter in a two-dimensional direction under the control of the microcomputer. The cutter is arbitrarily moved in a two-dimensional direction using the drive unit under the control of a microcomputer according to a predetermined program, thereby engraving a thermoplastic resin material or a light metal material. 2. Description of the Related Art There is known a two-dimensional engraving apparatus in which a desired name tag, display tag, or the like can be produced by engraving an arbitrary character or figure on an object.

FIG. 1 is an explanatory view showing a partial sectional structure of a spindle head for supporting a cutter in the two-dimensional engraving apparatus as described above.

[0004] Here, a spindle head 100 supporting a cutter 112 described later is a spindle 1 formed in a substantially cylindrical body.
14, a rotating shaft 118 rotatably supported on the inner peripheral side of the main shaft 114 via a bearing 116, and a blade portion 112a
A cutter 112 fixed with a screw (not shown) to a rotating shaft 118;
A pulley 120 positioned above the rotary shaft 118 and fixed to the rotary shaft 118 using screws (not shown);
Screw portion 1 formed on the outer peripheral surface of lower end portion 114a
Nose guard screw portion 13 formed on the inner peripheral surface at 14b
The nose guard 130 includes a nose guard 130 to which a screw 0d is screw-coupled, and a dust collection adapter 140 fixed to the outer peripheral surface of the nose guard 130 using a screw (not shown).

The nose guard 130 has a substantially cylindrical base member 130a provided with a nose guard screw portion 130d which is screwed to the main shaft screw portion 114b, and a substantially tapered cylinder provided with an open end portion 130c which comes into contact with the object to be engraved. Is separated from the end member 130b in the shape of a circle.
By connecting the base member 130a and the tip member 130b with each other, the base member 130a and the tip member 1
30b are integrated.

The cutter 112 and the nose guard 13
0, the blade 112a of the cutter 112 is positioned at the open end 130b of the tip member 130b of the nose guard 130.
The position is such that it protrudes downward from c.
The positional relationship between the nose guard 130 and the dust collection adapter 140 is such that the opening end 130c of the tip member 130b of the nose guard 130 is
The positional relationship is such that it protrudes downward from 42b.

Reference numeral 133 denotes a sleeve arranged on the outer peripheral surface of the rotating shaft 118 for positioning the bearing 116.

In the above configuration, a belt (not shown)
The rotational force of a motor (not shown) is
0 to rotate pulley 120, pulley 1
The rotation shaft 118 rotates with the rotation of the rotation shaft 20, and the rotation shaft 118
The cutter 112 rotates with the rotation of.

In this way, by rotating the spindle head 100 in a two-dimensional direction and vertically in a state where the cutter 112 is rotated, the engraved object is cut by the blade portion 112a of the cutter 112. Thus, characters and figures are engraved on the object.

FIG. 2 is a conceptual explanatory view showing a state in which the blade 112a of the cutter 112 cuts an object to be engraved. The tip member 13 of the nose guard 130 is shown in FIG.
With the opening end 130c of Ob abutting on the surface of the object to be engraved, the blade 112a of the cutter 112 cuts the object to be engraved.

That is, when the object to be engraved is cut by the blade 112a of the cutter 112, the open end 130c of the tip member 130b of the nose guard 130 comes into contact with the surface of the object to be engraved. When the length of the blade portion 112a of the cutter 112 protruding from 130c is longer than the length H1 (see FIG. 1), the blade portion 112a of the cutter 112 does not enter the object to be engraved. The cutting depth (hereinafter referred to as “engraving depth”) H2 (see FIG. 2) that enters the object is the opening end 1.
Blade portion 112a of cutter 112 protruding from 30c
Is equal to the length H1.

Here, the opening end 1 of the nose guard 130
Adjustment of the length H1 of the blade portion 112a of the cutter 112 protruding from the nose guard 130 is performed by adjusting the nose guard screw portion 130d of the nose guard 130 with respect to the main shaft screw portion 114b of the main shaft 114.
Can be performed by adjusting the screwing amount at the time of screw connection.

That is, when the screwing amount of the nose guard 130 into the main shaft 114 is changed, the position of the opening end 130c of the nose guard 130 with respect to the main shaft 114 changes vertically in the axial direction of the main shaft 114, and the opening end of the nose guard 130 is changed. Cutter 11 protruding from section 130c
The length H1 of the second blade 112a changes.

Therefore, by adjusting the screwing amount of the nose guard 130 into the main shaft 114, the engraving depth H can be adjusted.
2 can be set to a desired value, and the object to be engraved can be cut by the blade 112a of the cutter 112 while maintaining the engraving depth H2 set to the desired value.

FIG. 3 is a schematic perspective view of the configuration of the dust collecting adapter 140.
Is formed, for example, from plastic.

The dust collecting adapter 140 has a substantially cylindrical dust collecting body 14 fixed on the outer periphery of the nose guard 130.
2 and a cylindrical dust collecting pipe 144 arranged on a peripheral wall 142c of the dust collecting body 142 described later.

The dust collector 142 is provided with the nose guard 1.
Nose guard connection opening 14 fitted on the outer periphery of 30
2a and a dust collecting opening 1 that opens below the dust collecting body 142 with an inner diameter larger than the nose guard connection opening 142a.
42b, a peripheral wall 142c that is a side surface of the dust collector 142 and is orthogonal to the nose guard connection opening 142a and the dust collection opening 142b, and a dust collector end 142d in which the peripheral wall 142c and the dust collecting pipe 144 are integrated. Has a side opening 142e opened orthogonal to the nose guard connection opening 142a and the dust collection opening 142d, and a screw hole 142f located near the nose guard connection opening 142a in the peripheral wall 142c.

A screw (not shown) is screwed into the screw hole 142f, and the dust collecting adapter 140 is fixed on the outer periphery of the nose guard 130 by screwing the screw.

The dust collecting pipe 144 is provided at the end 142 of the dust collecting body.
At d, it communicates with the circular opening surface 142g.

Further, a suction device (not shown) is connected to the end 144a of the dust collection tube 144 so that the cut piece of the engraving object is suctioned to the suction device via the dust collection adapter 140. It has been done.

That is, the cutting pieces generated when the blade portion 112a of the cutter 112 cuts the object to be engraved are moved from the dust collecting opening 142b to the side opening 1 by the suction force of the suction device.
After being sucked into the dust collecting tube 144 via 42e, it is removed from the vicinity of the surface of the object to be engraved.

When the engraving depth H2 is changed by adjusting the screwing amount of the nose guard 130 into the main shaft 114 as described above, the nose guard 13
0 rotates around the main shaft 114.

Since the dust collecting adapter 140 is fixed on the outer periphery of the nose guard 130, the engraving depth H2
Nose guard 130 with respect to spindle 114 for setting
When the screw is screwed, the nose guard 130 and the dust collecting adapter 140 rotate around the main shaft 114 in conjunction with each other, and the position of the dust collecting tube 144 in the main spindle head 100 changes. This causes a problem in mounting the dust tube 144 and the suction device.

That is, when the dust collecting adapter 140 is mounted on the outer periphery of the nose guard 130, the engraving depth H2 cannot be set by the nose guard 130.

For this reason, when changing the engraving depth H2 by the nose guard 130, the dust collecting adapter 140 is detached from the nose guard 130 in advance, and then only the nose guard 130 is screwed into the main shaft 114 alone to reduce the engraving depth H2. The setting is performed, and after the setting of the engraving depth H2 is completed, the dust collection adapter 140 is attached to the nose guard 130 again.

Therefore, conventionally, the nose guard 1
Nose guard 1 every time the engraving depth H2 is set by 30
It is necessary to perform the work of removing the dust collection adapter 140 from the nose guard 130 and the work of attaching the dust collection adapter 140 to the nose guard 130, and there has been a problem that the work has been extremely complicated.

[0027]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and an object thereof is to set an engraving depth by a nose guard. It is an object of the present invention to provide an engraving depth adjusting unit that does not require removing the dust collection adapter from the nose guard, and allows the nose guard to set the engraving depth while the dust collection adapter is attached to the nose guard.

[0028]

In order to achieve the above object, according to the first aspect of the present invention, a cutting depth of a cutter moving in a two-dimensional direction is set such that a cutting portion cuts an object to be engraved. In the engraving depth adjusting unit for adjusting the depth of the cutter, the opening supported by the cutter supporting means has an opening for projecting the blade side of the cutter, and the cutter is rotatably attached to the cutter supporting means. An engraving depth adjusting member that changes an attachment position to the support means, and changes a length of the cutter protruding from the opening according to a change in the attachment position to the cutter support means; An interposed member to be fitted, and an opening for dust-collecting a cutting piece which is rotatably fitted to the interposed member and the blade of the cutter cuts the engraving object. It is obtained so as to have a dust collecting member having.

Therefore, according to the first aspect of the present invention, the blade portion of the cutter having a length corresponding to the position where the engraving depth adjusting member is attached to the cutter support means is provided with the opening of the engraving depth adjusting member. Since the opening protrudes from the portion, the cutting depth at which the blade of the cutter cuts the object can be adjusted by bringing the opening into contact with the surface of the object.

Further, since the interposition member is fitted to the engraving depth adjusting member, and the interposition member and the dust collecting member are rotatably fitted, the engraving depth adjusting member is rotated to rotate the engraving depth adjusting member. When changing the length of the cutter protruding from the opening of the adjusting member, the engraving depth adjusting member can be rotated independently of the dust collecting member. For this reason, in the state where the suction device is connected to the dust collecting member, the length of the cutter protruding from the opening of the engraving depth adjusting member can be changed.

Here, the above-mentioned "engraving depth adjusting member" is referred to as "nose guard 3" in the section of "Embodiment of the invention".
0 ”, and the“ opening of the engraving depth adjustment member ”described above.
In the section “Embodiments of the Invention”
a), the above-mentioned “intervening member” corresponds to the “dust collection attachment 20” in the section of “Embodiment of the Invention”, and the above “dust collection member” corresponds to “the embodiment of the invention”. In the section, it corresponds to the “dust collection adapter 40”, and the above “opening of the dust collection member” corresponds to “the dust collection opening 42c” in the section of “Embodiment of the Invention”.

[0032] In the invention according to claim 2 of the present invention, in the invention according to claim 1 of the present invention, the dust collecting member comprises: a cylindrical dust collecting body having the opening; A dust collection tube protrudingly formed on a side surface of the dust collection body, and the dust collection tube is an elliptical cylindrical body whose major axis extends in a direction substantially orthogonal to an extension direction of the cutter. It is as it were.

Therefore, according to the second aspect of the present invention, since the dust collection tube is an elliptic cylindrical body, it takes up less space than a conventional cylindrical dust collection tube. The area of the opening surface can be increased, and the dust collection efficiency can be improved.

[0034]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an engraving depth adjusting unit according to the present invention will be described below in detail with reference to the accompanying drawings.

1 to 3 are denoted by the same reference numerals as those used in FIGS. 1 to 3, and the detailed description thereof will be omitted. I do.

FIG. 4 is a diagram illustrating the configuration of a spindle head provided with an example of an embodiment of an engraving depth adjusting unit according to the present invention. FIG. 5 is an embodiment of the engraving depth adjusting unit according to the present invention. 2 is a schematic perspective view showing an example of the configuration.

The engraving depth adjusting unit 10 includes a main shaft 1
A nose guard 30 to which a nose guard screw portion 32a, which will be described later, is screwed and coupled to the 14 main shaft screw portion 114b.
A dust collecting attachment 20 fixed on the outer periphery of the nose guard 30 by a set screw, and a dust collecting adapter 40 slidably and rotatably disposed on the outer periphery of the dust collecting attachment 20. Have been.

FIG. 6 is a perspective view of the nose guard 30, FIG. 7 is a partial cross-sectional explanatory view of the nose guard 30, and FIG. 8 is a view taken in the direction of arrow A in FIG. I have.

The nose guard 30 is made of, for example, metal and has a substantially cylindrical base member 32.
And a distal end member 34 having a tapered substantially cylindrical shape. The base member 32 and the distal end member 34 are connected by the retainer 31 to thereby form the base member 32 and the distal end member 34. 34 are integrated.

The cutter 112 and the nose guard 30
Means that the blade 112a of the cutter 112 has the nose guard 3
The nose guard 30 and the dust collection adapter 40 are dimensioned so as to protrude downward from the front end opening 34a of the front end member 34 of the nose guard 30, and the opening end 34a of the front end member 34 of the nose guard 30 is The size is set so as to protrude downward from a dust collecting opening 42b described later.

Further, the detailed configuration of the nose guard 30 will be described. The nose guard screw portion 32 screwed to the main shaft screw portion 114b is provided on the inner peripheral portion of the base member 32.
a is formed.

Further, on the outer peripheral portion of the base member 32, a scale portion 32b indicating the scale of the engraving depth, and the operator refers to the scale portion 32b to allow the operator to move the nose guard 30 with respect to the main shaft 114.
And a dust collecting attachment mounting portion 32d for mounting the dust collecting attachment 20 are formed.

Next, FIG. 9 is a perspective view schematically showing the configuration of the dust collecting attachment 20, and the dust collecting attachment 20 is formed of, for example, a resin.

The dust collection attachment 20 is entirely formed in a substantially cylindrical body, and the upper opening 20a of the dust collection attachment 20 is tightly fitted with the dust collection attachment mounting portion 32d of the nose guard 30 inserted therein. And the lower opening 20b of the dust collection attachment 20 is
The dimensions are set to have substantially the same inner diameter as a.

On the other hand, the outer peripheral portion of the dust collecting attachment 20 has an upper convex portion 20c formed adjacent to the upper opening portion 20a, and a connecting convex portion formed below and adjacent to the upper convex portion 20c. Intermediate recess 20 fitted with 42e
d and a lower convex portion 20e formed adjacent to and below the intermediate concave portion 20d and fitted with a connecting concave portion 42f described later.
Are provided.

Further, a screw hole 20f is formed in the upper convex portion 20c.
Are formed, and the intermediate concave portion 20d and the lower convex portion 2 are formed.
A plurality of notches 20g extending in the axial direction of the substantially cylindrical body from 0e are formed.

The notch 20 extending along the axial direction of the substantially cylindrical body between the intermediate concave portion 20d and the lower convex portion 20e.
By forming the g at a plurality of locations, the intermediate concave portion 20d and the lower convex portion 20e can be easily elastically deformed.
This facilitates the work of inserting the “0” into the dust collection adapter 40.

Next, FIGS. 10A and 10B are schematic perspective views of the dust collecting adapter 40. The dust collecting adapter 40 is formed of, for example, metal.

The dust collecting adapter 40 comprises a substantially cylindrical dust collecting body 42, and an elliptic cylindrical dust collecting pipe 44 protruding from a peripheral wall 42a on the side surface of the dust collecting body 42. ing.

Here, the dust collecting attachment connection opening 42b located above the dust collecting body 42 is dimensioned so as to have an inner diameter large enough to be fitted to the dust collecting attachment 20. The dust collection opening 42c located at the lower part of the sample collection 42 is dimensioned to have substantially the same inner diameter as the dust collection attachment connection opening 42b.

The dust collecting body 42 in which the dust collecting pipe 44 is provided.
An opening surface 42d is formed in the peripheral wall portion 42a. The opening surface 42d has the same size as the elliptical shape of the dust collection tube 44.

Further, on the inner peripheral side near the dust collection attachment connection opening 42b of the dust collection body 42, a connection projection 42e fitted with the intermediate recess 20d of the dust collection attachment 20 is provided.
Are formed, and a connection concave portion 42f is formed adjacent to and below the connection convex portion 42e so as to be fitted to the lower convex portion 20e.

As shown in FIG. 3B, the dust collection tube 44 is formed as an elliptical cylindrical body whose major axis extends in a direction substantially perpendicular to the extension direction of the cutter 112.

A suction device (not shown) is connected to the end 44 a of the dust collection tube 44 so that the cut piece of the engraved object is suctioned to the suction device via the dust collection adapter 40. It has been done.

In the above configuration, the nose guard 30, the dust collecting attachment 20, the dust collecting attachment 20, and the exploded perspective view of the engraving depth adjusting unit 10 shown in FIG. 11 and the longitudinal sectional view of the engraving depth adjusting unit 10 shown in FIG. A method of configuring the engraving depth adjustment unit 10 shown in FIG. 5 by assembling with the adapter 40 and the operation of the engraving depth adjustment unit 10 will be described.

Nose guard 30 and dust collection attachment 2
In order to construct the engraving depth adjusting unit 10 by assembling the dust collecting adapter 40 with the dust collecting adapter 40, first, the dust collecting attachment 2
0 is inserted into the attachment connection opening 42b of the dust collecting adapter 40 from the lower convex portion 20e side, and the dust collecting attachment 20 is arranged on the inner peripheral side of the dust collecting adapter 40.

At this time, the intermediate concave portion 20d of the dust collecting attachment 20 and the connection convex portion 42e of the dust collecting adapter 40 are slidably and rotatably fitted, and the lower convex portion 20e of the dust collecting attachment 20 is The connection concave portion 42f of the dust collection adapter 40 is slidably and rotatably fitted, and the dust collection adapter 40 is slidably and rotatably disposed on the outer peripheral portion of the dust collection attachment 20. Become.

Next, the nose guard 30 and the dust collecting attachment 20 having the dust collecting adapter 40 slidably and rotatably disposed on the outer peripheral portion are assembled. That is, the nose guard 30 is moved from the tip member 34 side to the dust collection attachment 20.
The nose guard 30 is arranged on the inner peripheral side of the dust collection attachment 20 so as to be inserted into the upper opening 20a of the nosepiece.

At this time, the dust collecting attachment mounting portion 32d of the nose guard 30 abuts on the inner peripheral side of the upper opening 20a of the dust collecting attachment 20, and the upper opening 20
The dust collection attachment 20 and the nose guard 30 are integrally connected by screwing the set screw 21 into the screw hole 20f drilled in a.

Therefore, as described above, the nose guard 3
In the engraving depth adjusting unit 10 configured by assembling the dust collecting attachment 20 and the dust collecting adapter 40, the nose guard 30 and the dust collecting adapter 40 are slidably and rotatably connected via the dust collecting attachment 20. As a result, the nose guard 30 and the dust collection adapter 40 can be rotated independently of each other. That is,
Even if the nose guard 30 is rotated, the dust collection adapter 40 does not rotate with it.

To attach the engraving depth adjusting unit 10 configured as described above to the spindle 114 to constitute the spindle head 100, the nose guard screw portion 32a of the nose guard 30 and the spindle screw portion 114b of the spindle 114 are screwed. It is what combines. Thus, the spindle head 100 shown in FIG. 4 is configured.

The cutter 112 and the nose guard 30
2 is in a state similar to that of the conventional configuration shown in FIG. 2, in which the blade 112a of the cutter 112 protrudes from the distal opening 34a of the nose guard 30, and the distal opening 34a of the nose guard 30 is Touching the surface of
The object to be engraved can be cut while the engraving depth set by the blade portion 112a is kept constant.

Further, the cut pieces generated when the blade portion 112a cuts the object to be engraved are generated by the suction force of the suction device.
The dust is sucked from the dust collecting opening 42c through the opening surface 42d to the dust collecting pipe 44 and removed.

The length H1 of the blade 112a protruding from the opening 34a, that is, the depth of engraving, is adjusted by adjusting the nose guard screw portion 32a of the nose guard 30 to the main shaft screw portion of the main shaft 114 in the same manner as in the above-described conventional configuration. This is performed by adjusting the amount of screwing when screwing into 114b.

At the time of adjusting the engraving depth, the nose guard 30 and the dust collecting adapter 40 can rotate independently of each other, so that only the nose guard 30 rotates about the main shaft 114 and collects. The dust adapter 40 does not rotate about the main shaft 114 in conjunction with the nose guard 30.

Therefore, when adjusting the engraving depth, there is no need to remove the dust collecting adapter 40 from the spindle head 100, and it is not necessary to remove the dust collecting adapter 40 from the spindle head 100, and it is necessary to reattach it. Therefore, there is no need to perform the complicated work of removing and attaching the dust collection adapter 40.

For example, the tip opening 3 of the nose guard 30
Length H1 of blade 112a protruding from 4a (see FIG. 4)
Is set to 5 mm, the operator grips the grip 32c so that the scale of "5" of the scale 32b matches the reference position (not shown) for measuring the engraving depth.
To rotate the nose guard screw portion 32 of the nose guard 30
a may be screwed into the spindle screw portion 114b of the spindle 114.

As a result, only the nose guard 30 rotates about the main shaft 114, and the screw connection position of the nose guard 30 with respect to the main shaft 114 changes, so that the nose guard 3
0 from the tip opening 32a to the blade 112 of the cutter 112.
a is projected by 5 mm, but the spindle head 10
The position of the dust collection tube 44 at 0 does not change before and after the setting of the engraving depth.

In the above-described embodiment, the dust collecting pipe 144 (see FIG. 3) of the conventional dust collecting adapter 140 is formed of a cylindrical body, whereas the dust collecting pipe of the dust collecting adapter 40 is formed. Reference numeral 44 denotes an elliptical cylindrical body whose major axis extends in a direction substantially perpendicular to the direction in which the cutter 112 extends.

Here, in order to increase the dust collection efficiency of the conventional dust collection tube 144, it is necessary to increase the diameter of the dust collection tube 144. In this case, however, the height of the peripheral wall portion 142c increases. And the length of the cutter 112 protruding from the main shaft 118 is increased, so that the rigidity of the cutter 112 is reduced and the engraving quality is deteriorated. Due to the restrictions, problems such as restrictions on the design of the main shaft 114 occur.

For this reason, by forming the dust collection tube 44 as an elliptical cylindrical body whose major axis extends in a direction substantially perpendicular to the direction in which the cutter 112 extends, as shown in FIG. When the diameter of the dust tube 144 and the short axis of the dust tube 44 are matched, the opening surface can be enlarged without taking up space as compared with the conventional dust tube 144, and the height of the peripheral wall portion 42a can be increased. The dust collection efficiency of the dust collection tube 44 can be increased without increasing the number of dusts or restricting the design of the main shaft 114.

In the above-described embodiment, the nose guard 30 is formed of metal, and the dust collection attachment 20 is formed of resin.
Although the dust collection adapter 40 is formed of metal, it is a matter of course that other materials may be used without being limited to this.

[0073]

Since the present invention is configured as described above, it is not necessary to remove the dust collecting adapter from the nose guard when setting the engraving depth using the nose guard, and the state in which the dust collecting adapter is attached to the nose guard is provided. This has an excellent effect that the engraving depth can be set by the nose guard.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional configuration explanatory view showing a conventional spindle head supporting a cutter in a two-dimensional engraving apparatus.

FIG. 2 is a conceptual explanatory view showing a blade portion of a cutter when cutting an object to be engraved.

FIG. 3 is a schematic configuration perspective view showing a conventional dust collection adapter.

FIG. 4 is a structural explanatory view showing a spindle head provided with an example of an embodiment of an engraving depth adjusting unit according to the present invention.

FIG. 5 is a schematic structural perspective view showing an example of an embodiment of an engraving depth adjusting unit according to the present invention.

FIG. 6 is a perspective view showing a nose guard.

FIG. 7 is a partially sectional explanatory view showing a nose guard.

FIG. 8 is a view of the nose guard in FIG.

FIG. 9 is a schematic configuration perspective view showing a dust collection attachment.

FIGS. 10A and 10B are explanatory views showing a dust collecting adapter, wherein FIG. 10A is a schematic perspective view, and FIG. 10B is a cross-sectional view taken along line BB of FIG.

FIG. 11 is an exploded perspective view showing a configuration of an engraving depth adjusting unit according to the present invention.

FIG. 12 is an explanatory longitudinal sectional view showing an engraving depth adjusting unit according to the present invention.

[Explanation of symbols]

 Reference Signs List 10 Engraving depth adjustment unit 20 Dust collection attachment 30, 130 Nose guard 40, 140 Dust collection adapter 100 Spindle head 112 Cutter 112a Blade section 114 Spindle

Claims (2)

[Claims] 1. An engraving depth adjusting unit for adjusting a cutting depth at which a blade portion of a cutter moving in a two-dimensional direction cuts an object to be engraved, wherein an opening for protruding a blade portion side of a cutter supported by cutter support means. Part, and is rotatably attached to the cutter support means, and changes the position of attachment to the cutter support means according to the amount of rotation, and the opening corresponds to the change of the attachment position to the cutter support means. An engraving depth adjusting member that changes the length of the cutter protruding from the portion; an interposition member fitted to the engraving depth adjustment member; and the blade of the cutter rotatably fitted to the interposition member. A dust collecting member having an opening for collecting a cut piece generated by cutting an object to be engraved. 2. The engraving depth adjusting unit according to claim 1, wherein the dust collecting member is a cylindrical dust collecting body having the opening, and a dust collecting pipe protruding from a side surface of the dust collecting body. An engraving depth adjustment unit, wherein the dust collection tube is an elliptical cylindrical body whose major axis extends in a direction substantially perpendicular to an extension direction of the cutter.