JP2001241416A - Shaft installing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the manufacturing cost of a device equipped with two shafts supporting an object such as carriage movably without using any high- torque motor in such an arrangement that they are parallel in the specified direction in compliance with the object movement. SOLUTION: Two shafts are arranged in the specified direction between supporting members for supporting an object movably in the axial direction of the two shaft, and in installing these shafts, at least one of them is positioned on the plane of an opening bored in the supporting members, energized by an energizing means toward the plane of the opening, and is made slidable on the plane against the energizing force exerted by the energizing means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for arranging a shaft, and more particularly, to a method for arranging a shaft suitable for arranging a shaft movably supporting an object such as a carriage. .

[0002]

2. Description of the Related Art Conventionally, as a mechanism for movably supporting an object such as a carriage in a predetermined direction, for example, a mechanism using a linear guide and a rolling bearing is known.

Specifically, the linear guide is disposed in a predetermined direction, the carriage is supported on the linear guide via a rolling bearing, and when the carriage is urged by driving a motor, the carriage is moved along the linear guide. Move in a predetermined direction.

[0004] However, according to the mechanism described above, parts such as the linear guide are costly.
When the linear guide is mounted on an apparatus, there is a problem that manufacturing costs and the like increase, and the apparatus has to be expensive.

[0005] Further, since the rolling bearing is a component which is easily affected by dust, for example, when the above method is used in a cutting apparatus for cutting a workpiece by a cutting means such as a cutter, the workpiece is cut. Because it is very difficult for the rolling bearing to prevent dust from
There is a problem that the rolling bearing may be adversely affected by dust such as cutting pieces of the workpiece.

As a method for solving such problems, a mechanism using a shaft and a slide bearing instead of a linear guide and a rolling bearing is known.

Specifically, a shaft is disposed in a predetermined direction, the carriage is supported on the shaft via a slide bearing, and when the carriage is urged by driving a motor, the carriage is moved in a predetermined direction along the shaft. The thing that moves to.

This mechanism using such a shaft and a plain bearing can be used in a cutting device,
In addition, although it is inexpensive because a linear guide is not used, in order to reduce the sliding resistance between the shaft and the sliding bearing, it is necessary to secure a sufficient clearance between the shaft and the sliding bearing. There is a problem that a design limitation is caused.

On the other hand, if the clearance between the shaft and the slide bearing is not sufficiently ensured and the clearance between the slide bearing and the shaft is small, the sliding resistance between the slide bearing and the shaft increases. Sufficient motor torque is required, and such a high-torque motor with a large motor torque is expensive.If such a high-torque motor is mounted on a device, the manufacturing cost increases, and the device becomes expensive. A new problem that would arise.

In the above-mentioned mechanism, two shafts are provided in a predetermined direction between the support members.
In the case where the carriage supported on the two shafts via the sliding bearings is moved by the driving force of the motor, the two shafts are accurately moved in a predetermined direction.
In other words, they need to be arranged in parallel within a certain parallelism range.

However, in practice, the predetermined parallelism range is exceeded due to an error caused by component accuracy or the like, so that the two shafts are not accurately arranged in parallel, and the two shafts are not precisely arranged in parallel. A large sliding resistance has been generated due to the friction between the shaft and the sliding bearing.

For this reason, a sufficient motor torque is required, and if a high-torque motor is mounted on a device, there is a problem that the manufacturing cost increases and the device becomes expensive.

[0013]

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 use a high-torque motor without using a high-torque motor. Two shafts that movably support an object such as a carriage are arranged in parallel in a predetermined direction in accordance with the movement of the object.
It is an object of the present invention to provide a method for disposing a shaft, which can reduce the manufacturing cost of a device on which the shaft is disposed.

[0014]

In order to achieve the above object, according to the first aspect of the present invention, the two shafts disposed in a predetermined direction between the support members are used for the above-mentioned two shafts. In the method of arranging the two shafts for supporting an object movably along the axial direction of the two shafts, at least one of the two shafts may include the support shaft. It is located on the plane of the opening formed in the member and is urged by the urging means against the plane of the opening, and is slidable on the plane against the urging force of the urging means. It is said that.

Therefore, according to the first aspect of the present invention, at least one of the two shafts is located on the plane of the opening formed in the support member, and The opening is urged against the plane of the opening by the urging means, but is movable on the plane against the urging force of the urging means. The slide absorbs errors caused by component accuracy and the like, and the two shafts can be arranged in parallel within a certain parallelism range.

[0016] For this reason, the generation of large sliding resistance due to friction between the two shafts and the object is avoided,
Since the object can be moved along two shafts without using a high torque motor or the like,
The apparatus on which the shafts are arranged can be made inexpensive.

According to a second aspect of the present invention, in the first aspect of the present invention, the object supported by the two shafts is driven in accordance with a predetermined driving force.
When moving along the axial direction of the book shaft, on the plane of the opening, the one shaft approaches or separates from the other shaft against the urging force of the urging means. And the two shafts are positioned in parallel.

Therefore, according to the second aspect of the present invention, the object supported by the two shafts moves along the axial direction of the two shafts according to a predetermined driving force. At this time, the one shaft slides on the plane of the opening so that the one shaft approaches or separates from the other shaft against the urging force of the urging means, and the two shafts are parallelized. Therefore, errors such as component accuracy are absorbed by this slide, and the two shafts can be disposed in parallel within a certain parallelism range.

In the invention according to any one of the first and second aspects, as in the third aspect of the present invention, the urging means may be a coil spring. Good.

In the invention according to any one of claims 1, 2 and 3, as in the invention according to claim 4, the one shaft is a columnar body. You may make it.

With this arrangement, the frictional resistance between the shaft and the plane against which the shaft is pressed is reduced, and the shaft can slide more smoothly on the plane.

In the invention according to any one of the first, second, third and fourth aspects of the present invention, as in the fifth aspect of the present invention,
The two shafts may be supported movably along the axial direction of the two shafts via a slide bearing.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a method for arranging a shaft according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic structural explanatory view of a cutting apparatus in which an example of an embodiment of a method for disposing a shaft according to the present invention is shown.

The cutting apparatus 10 includes a fixed base member 12, side members 14L and 14R disposed at right and left ends of the base member 12 at right and left ends of the base member 12, and left and right two members.
Rear member 16 connecting the two side members 14L, 14R
And two rails 18-extending on the base member 12 in the Y-axis direction (refer to a reference diagram showing the coordinate system in FIG. 1) and arranged in a positional relationship parallel to each other.
1, 18-2, a table 20 movably disposed in the Y-axis direction on the two rails 18-1 and 18-2, and a Y-axis direction between two left and right side members 14L and 14R. A front shaft 22 and a rear shaft extending in an orthogonal X-axis direction (refer to a reference diagram showing a coordinate system in FIG. 1) and arranged in parallel with each other to connect two left and right side members 14 </ b> L and 14 </ b> R. 24 and the front shaft 2
A carriage (not shown) fixedly disposed on a wire (not shown) disposed in parallel with the rear member 16 while being movably disposed in the X-axis direction on the rear shaft 2 and the rear shaft 24 via a slide bearing. And a right shaft extending in a Z-axis direction (refer to a reference diagram showing a coordinate system in FIG. 1) perpendicular to the X-axis direction and the Y-axis direction with respect to the carriage 28 and disposed in parallel with each other. 30 and left shaft 32
A support member 34 movably disposed in the Z-axis direction on the right shaft 30 and the left shaft 32 via a slide bearing,
It has a cutter 36 fixedly disposed on the support member 34 so as to face the table 20.

The entire operation of the cutting apparatus 10, including the drive control of a motor (not shown), is controlled by a microcomputer.

The three-dimensional object 100 is fixedly placed on the table 20.

The carriage 28 is disposed on the front shaft 22 and the rear shaft 24 via a sliding bearing so as to be movable in the X-axis direction. More specifically, by driving a wire (not shown) by a predetermined driving force of a motor (not shown) controlled by a microcomputer, the wire is fixedly disposed on the wire (not shown). The carriage 28 moves in the X-axis direction through a sliding bearing along the axial direction of the two shafts, the front shaft 22 and the rear shaft 24, as the wire (not shown) is driven. is there.

The front shaft 22 and the rear shaft 24 are tightly inserted into the inner diameter side of the slide bearing provided on the carriage 28.

In the same manner as the carriage 28, the support member 3
Reference numeral 4 denotes a motor (not shown) which is disposed on the right shaft 30 and the left shaft 32 via a sliding bearing so as to be movable in the Z-axis direction. More specifically, the motor 4 is controlled by a microcomputer. With the predetermined driving force, the support member 34 is moved in the Z-axis direction along two shafts, the right shaft 30 and the left shaft 32, via a sliding bearing.

The right shaft 30 or the left shaft 32 is tightly inserted into the inner diameter side of the sliding bearing provided on the support member 34.

The cutter 36 is driven by a motor (not shown) controlled by a microcomputer to cut the workpiece 100.

A front shaft 22 and a rear shaft 24, which are disposed in parallel with each other in the X-axis direction,
Right shaft 3 arranged parallel to each other in the axial direction
0 and the left shaft 32 are all cylindrical bodies.

Here, FIGS. 2A and 2B are partially enlarged views as viewed from the direction indicated by the arrow A in FIG. 1, and FIG. 2A is a view in which the side members 14L and 14R are disposed. Front shaft 2
2 and the rear shaft 24 are shown, with (b)
Front opening 40 formed in side members 14L and 14R
_left , 40 _right and rear opening 50 _left ,
50 _right is shown.

FIG. 3 shows a front shaft 22, a rear shaft 24, a right shaft 30, and a left shaft 32.
Is an explanatory diagram schematically showing a state in which is disposed.

The front shaft 22 includes two left and right side members.
Rectangular front openings drilled in 14L and 14R, respectively
Part 40_left, 40_rightWhich penetrates
Front opening 40_left, 40_rightOn the bottom of
Plane 40a_left, 40a _rightIt's located above
(See FIGS. 2B and 3).

At this time, the front shaft 22 is connected to the front side surfaces 40b of the front openings 40 _left and 40 _right.
left , 40b _right and rear side 40
d _{l eft, 40d right} and upper surface portion 40c
_Left and 40 _right have a predetermined gap.

The front openings 40 _left , 40 _left
right of the bottom portion of the flat _{40a l} eft, 40a
_{The light} has the same height in the Z-axis direction.

Then, the front openings 40 _left , 40
end 22 of front shaft 22 _passing through _right
a includes coil springs 42 _left as urging means, 4
One end of the 2 _{ri ght} and is engaged, in the coil spring _{42 left, 42. Right} at the other end Z front opening in the axial direction _{40 left, 40. Right} screw ₄₄ for locking located below the _{left, 44. Right} It is locked (see FIG. 2A).

This coil spring 42_left, 42
_rightIs the biasing force (spring force) in the contraction (compression) direction
Therefore, the coil spring 42
_left, 42 _rightDue to the urging force (spring force) of
Thus, the front shaft 22 is moved in the direction of arrow C in FIG.
Energized downward in the Z-axis direction, the front opening 40
_left, 40_{r light}Plane 40a at the bottom
_left, 40a_rightPressed against the top
Will be.

Further, the coil spring 42_left, 4
2_rightOf the urging force (spring force) of the cutting device
At 10, the cutter 36 cuts the workpiece 100.
And the motor (not shown)
The carriage 28 is moved forward in accordance with the predetermined driving force.
When moving along the shaft 22 and the rear shaft 24
The coil spring 42_left, 42_rightAttached
The front shaft 22 moves rearward against the force (spring force).
Front opening so as to be close to or away from the
40_left, 40_rightPlane 40a at the bottom
_left, 40a _rightSo that you can slide on
It has been set.

That is, the front shaft 22 is
The cutter 36 is pulled in the direction of gravity (in the direction of the arrow C in FIG. 2B and on the side of the base member 12 of the cutting device 10) with a spring force enough to withstand the cutting load by 2 _left and 42 _right . Withstand the cutting load of the cutting when cutting the workpiece 100, the front opening 40 _left , the flat surface 40 of the bottom surface of the 40 _right
a _left, is positioned relative _{40a r ight,}
The rigidity of the front shaft 22 required for cutting is maintained.

On the other hand, when the carriage 28 moves in the X-axis direction along the front shaft 22 and the rear shaft 24 according to a predetermined driving force of a motor (not shown),
Depending on the position of the carriage 28 supported by the front shaft 22 and the rear shaft 24 in the X-axis direction, the front shaft 22 has the front openings 40 _left , 40 _ri.
ght bottom plane 40a _left , 40a
It slides in the direction of arrow B (see FIG. 2B) on the _right .

That is, the front shaft 22 is positioned by the coil springs 42 _left and 42 _right during cutting, while being positioned by the coil springs 42 _left and 42 _right .
_{lef t, 42 right} front opening ₄₀ against the biasing force of the _{left, 40. right} of the bottom portion of the plane 40a
_It is slidable on the _left and 40a _right , and is disposed so as not to be completely fixed to the side members 14L and 14R.

In the present specification, "the state in which the shaft is slidably disposed so as not to be completely fixed" is appropriately referred to as "semi-fixed state". .

On the other hand, the rear shaft 24 passes through the rhombus-shaped rear openings 50 _left and 50 _right formed in the two left and right side members 14 L and 14 R, respectively, so that the rear openings 50 _left and 50 _right are formed. The lower V-shaped corners 50a _left and 50a _right are positioned within the corners (see FIG. 2B).

The rear openings 50 _left , 50 _left
end 24 of rear shaft 24 _passing through _right
The a, scissors spring _{52 left, 52. right} are wrapped, the scissors spring ₅₂ left, 52
Both ends of the _right are fixing screws 54 _left ,
_{Locked to} 54 _right , 56 _left , 56 _right (see FIG. 2A).

Therefore, the rear shaft 24 is provided with the scissor-shaped spring 5.
2 _left , corner 50a by 52 _right
It is arranged so as to be pressed against the _left , 50a _right and completely fixed to the side members 14L, 14R.

The front openings 40 _left , 40
_right and rear opening 50 _left , 50 _right
Are front openings 40 _left , 40 _left , respectively.
front shaft 22 and rear opening 5 penetrating _right
Rear shaft 2 penetrating 0 _left , 50 _right
4 and the two left and right side members 14L, 14R so that
The size is set and drilled.

Next, the right shaft 30 and the left shaft 32 extend in the Z-axis direction and are arranged in parallel with each other as described above.
The front shaft 22 and the left shaft 32 have the same structure as the rear shaft 24 described above.

Therefore, the right shaft 30 is a biasing means.
Coil spring 62_top, 62_{bot tom}Cutting by
The right opening 60 with enough spring force to withstand the load_top,
60 _bottomPlane 60a at the bottom_top, 60a
_bottomIn the direction perpendicular to the extension direction
To the rear member 16 side of the cutting device 10).
Since the cutter 36 is stretched, the cutter 36
Withstand the cutting load of the cutting when cutting, and
Mouth 60_top, 60_bottomPlane 60 of the bottom
a_top, 60a_bottomIs positioned with respect to
The rigidity of the right shaft 30 required during cutting must be maintained
become.

On the other hand, when the support member 34 moves in the Z-axis direction along the right shaft 30 and the left shaft 32 according to a predetermined driving force of a motor (not shown), the right shaft 30 and the left shaft 32 The right shaft 30 depends on the position of the support member 34 supported by the
_Are arrows D on the planes 60a _top and 60a _bottom of the bottom portions of the right openings 60 _top and 60 _bottom.
It slides in the direction (see FIG. 3).

That is, the right shaft 30 is connected to the coil spring 6
The position of the coil spring 62 is set at the time of cutting by 2 _top and 62 _bottom .
_top , right opening 6 against urging force of 62 _bottom
0 _top , 60 _bottom bottom plane 60a
_{The top} and the 60a _bottom are slidable, and are arranged in a semi-fixed state so as not to be completely fixed to the carriage 28.

On the other hand, the left shaft 32 is
4 in the same manner as 4 above.
One left opening 70_top, 70_bottomThrough
Circular, diamond-shaped left opening 70_top, 70_bottomof
V-shaped rear corner 70a _top, 70a
_bottom(See FIG. 3).
See).

Then, the left openings 70 _top and 70
End 32 of left shaft 32 penetrating _bottom
The a, scissors spring _{72 top, 72 bottom} are wrapped, the scissors spring ₇₂ top, 72
corners 70a _top , 70a by _bottom
It is arranged so as to be pressed against the _bottom and completely fixed to the carriage 28.

The right openings 60 _top , 60
_bottom left openings _{70 top, 70 b ottom
Are} the right openings 60 _top and 60 _bottom , respectively.
Shaft 30 and left openings 70 _top , 70
_The left shaft 32 penetrating through the _bottom is positioned parallel to the same height plane in the Y-axis direction, and is dimensioned and drilled in the carriage 28.

In the above configuration, the cutting device 1 described above is used.
In the case of cutting the workpiece 100 at 0, the driving of the motor is controlled according to the predetermined data under the control of the microcomputer, and the cutter 36 is fixedly driven by the predetermined driving force of the motor. Is moved in the Z-axis direction along the right shaft 30 and the left shaft 32, the carriage 28 is moved in the X-axis direction along the front shaft 22 and the rear shaft 24, and , Table 2 on which workpiece 100 is arranged
0 is moved in the Y-axis direction along the two rails 18-1 and 18-2.

As a result, the workpiece 100 is cut by the cutter 36 according to the predetermined data.

At this time, as described above, the side member 14
L, 14R, front shafts 2 arranged parallel to each other
When the two shafts 2 and the rear shaft 24 are not arranged exactly in parallel due to an error caused by component accuracy or the like, the movement of the carriage 28 causes
Forward shaft 22 that is arranged in a semi-fixed state, the coil spring _{42 left, 42. Right} against the biasing force of the front opening _{40 le ft, 40 right} of the bottom portion of the plane _{40a left,} the upper _{40a. Right} Y It slides in the axial direction (the direction of arrow B in FIG. 2B and FIG. 3).

As a result, the front openings 40 _left , 40 are set so that the front shaft 22 approaches or separates from the rear shaft 24 so as to be parallel to each other.
plane 40a _left , 40a at the bottom of _right
Since the slider slides on the _right , an error caused by component accuracy or the like is absorbed, and the two shafts are arranged in parallel within a certain parallelism range.

Therefore, it is possible to avoid a large sliding resistance due to friction between the two shafts of the front shaft 22 and the rear shaft 24 and the carriage 28, and to use a high-torque motor without using a motor or the like. Carriage 2
8 can be moved along a front shaft 22 and a rear shaft 24.

The front shaft 22
Coil spring 42_left, 42 _rightIs
Withstands the cutting load when the cutter 36 cuts the workpiece 100.
Since it has enough biasing force, the cutter 36
When cutting the workpiece 100, the front shaft 22
Is in a fixed state to withstand the cutting load, and the workpiece 1
The cutting accuracy of 00 can be maintained.

On the other hand, as in the case of the front shaft 22 and the rear shaft 24 in the X-axis direction, Z
The right shaft 30 and the left shaft 32 disposed in the axial direction in parallel with each other on the carriage 28 as described above.
If the two shafts are not arranged exactly in parallel due to an error caused by component accuracy or the like, the right shaft 30 which is arranged in a semi-fixed state with the movement of the support member 34. Are the coil springs 62 _top and 62
_Against the biasing force of the _bottom , the right opening 60 _{t op} ,
Planes 60a _top , 60a of the bottom part of 60 _bottom
Slide on the _bottom in the X-axis direction (the direction of arrow D in FIG. 3).

As a result, the right shaft 30 is
For two, right openings ₆₀ top so as to be close to or apart so as to be parallel to each _{other, 60 bottom} of the bottom part of the plane _{60a top,} since the slide on _{60a bottom,} errors in due like part accuracy such as Is absorbed, and the two shafts are arranged in parallel within a certain parallelism range.

For this reason, the right shaft 30 and the left shaft 3
A large sliding resistance due to friction between the two shafts 2 and 2 and the support member 34 is avoided, and the support member 34 is connected to the right shaft 30 and the left shaft 32 without using a high-torque motor or the like. Can move along.

[0066] Also, the coil spring ₆₂ top which is arranged on the right shaft _{30, 62 bo} ttom has a biasing force enough to withstand the cutting load when the cutter 36 to cut the object to be cut 100 So the cutter 36
When cutting the workpiece 100, the right shaft 30 is in a fixed state withstand the cutting load,
The cutting accuracy of 0 can be maintained.

As described above, in the cutting apparatus 10 for realizing the shaft disposing method according to the present invention, the front shaft 22 is connected to the coil spring 42 in the X-axis direction.
_{lef t, 42} rear shaft with _right to dispose in a semi-fixed state slidably against the biasing force of 2
4 in the Z-axis direction, while the right shaft 30 is connected to the coil springs 62 _top and 62
_The front shaft 22 and the rear shaft 24 are arranged in a semi-fixed state in which the front shaft 22 and the rear shaft 24 are slidable against the urging force of the _{bottom, and the} left shaft 32 is completely fixed. In addition, the right shaft 30 and the left shaft 32 can be easily arranged in parallel within a certain degree of parallelism with the movement of the support member 34, and the front shaft 22 and the rear shaft 24 2 shafts and carriage 2
8 and between the two shafts of the right shaft 30 and the left shaft 32 and the slide bearing of the support member 34, a large sliding resistance due to friction is avoided. Therefore, it is not necessary to mount a high-torque motor on the cutting device 10, and the cutting device 10 can be made inexpensive.

According to the configuration of the cutting device 10 described above, the front shaft 22, the rear shaft 24, the right shaft 30, and the left shaft 32 are tightly inserted into the inner diameter side of the slide bearing. It is not necessary to ensure sufficient clearance between the bearing and the sliding bearing, and there is no design restriction.

Further, in the above-described cutting device 10, in place of the linear guide and the rolling bearing, a shaft (a front shaft 22, a rear shaft 24, a right shaft 30, and a left shaft 3) that is less expensive than the linear guide is used.
2) and the slide bearing are used, so that the provision of the linear guide increases the cost of the cutting device 10 and prevents dust such as cut pieces of the workpiece 100 such as a rolling bearing. The need for dustproofing can be avoided.

Further, in the above-described cutting device 10, of the two shafts, the front shaft 22 and the rear shaft 24, which are disposed in parallel with each other in the X-axis direction, the structural load of the cutting device 10 is reduced. Since the shaft located on the rear side that becomes larger, that is, the rear shaft 24 close to the rear member 16 is completely fixed, the cutting of the workpiece 100 can be performed in a more stable state. A cutting accuracy of 100 can be maintained.

In the above-described cutting device 10,
The play caused by the error caused by the precision of the parts and the like can be absorbed by the movement of the front shaft 22 and the right shaft 30, so that the precision of the parts provided in the cutting device 10 is slightly reduced. At least, the cutting accuracy of the workpiece 100 in the cutting device 10 can be maintained as long as the decrease in the accuracy of the component is within a range that is eliminated by the movement of the front shaft 22 and the right shaft 30.

In the above-described cutting device 10,
The play caused by the error caused by the precision of the parts and the like can be absorbed by moving the front shaft 22 and the right shaft 30, and therefore, when assembling the cutting apparatus 10, the various parts constituting the cutting apparatus 10 are connected to each other. It is not necessary to perform an operation for checking the balance of the cutting device 10, and the work efficiency of the assembling operation of the cutting device 10 can be improved.

Further, in the above-described cutting device 10,
Since the front shaft 22 and the right shaft 30 are columnar bodies, the front shaft 22 and the front openings 40 _left , 40 against which the front shaft 22 is pressed.
plane 40a _{le ft} , 40a at bottom of _right
right or the right shaft 30 and the right openings 60 _top , 60 against which the right shaft 30 is pressed.
plane _60a top of the bottom portion of _bottomt, 60a
The frictional resistance with the _bottom is reduced, and the front shaft 22 and the right shaft 30 are more smoothly moved to the bottom surfaces 40a _left , 40a _right , 60a.
_top , can slide on the 60a _bottom .

Note that, specifically, the cutting device as described above is used.
In the case of the condition as shown in FIG.
The front shaft 22 (right shaft 30) and the front opening
40 _left, 40_right(Right opening 60_top,
60_bottom) Side surface 40b_left, 40b
_right(Side part 60b_top, 60
b_bottom) Is approximately 1 mm, and the side portion 40
d_left, 40d_right(Side part 60d_top,
60d_bottom) Is about 1mm, upper surface
40c_{l eft}, 40c_right(Upper surface 60c
_top, 60c_bottom) Is about 2mm
In the range of approximately 0.1 to 0.05 mm
It is possible to eliminate stickiness.

The above embodiment may be modified as described in the following (1) to (7).

[0076] (1) In the above-described embodiment, the front opening _{40 left, 40 rig ht} (right opening 60
_top , 60 _bottom ) is formed in a rectangular shape, but is not limited to this, and is, of course, not limited to this. For example, it is formed in a semicircular shape as shown in FIG. That is, the front shaft 2
2 (right shaft 30) is located at the bottom surface 40a '
_left, 40a _{'r ight} (plane 60a of the bottom portion'
_top , 60a ′ _bottom ).

(2) In the above embodiment, Z
In the axial direction, the right shaft 30 is arranged in a semi-fixed state and the left shaft 32 is arranged completely fixed. However, it is needless to say that the left shaft 32 is not limited to this. The right shaft 30 may be disposed in a semi-fixed state and completely fixed.

(3) In the above embodiment, the front shaft 22 and the right shaft 30 are arranged in a semi-fixed state, while the rear shaft 24 and the left shaft 32 are arranged completely fixed. However, it is needless to say that the present invention is not limited to this.
2 and the right shaft 30 may be arranged in a semi-fixed state, and the rear shaft 24 or the left shaft 32 may be arranged in a semi-fixed state.

(4) In the above-described embodiment, the cylindrical shaft (the front shaft 22, the rear shaft 2)
4, the right shaft 30 and the left shaft 32) are used, but it is a matter of course that the invention is not limited to this. For example, a prism having a prismatic shape is used, and the shaft of the prismatic shape is in a semi-fixed state. May be arranged.

(5) In the above-described embodiment, the method of arranging the shaft according to the present invention is realized in the cutting device 10. However, it is needless to say that the present invention is not limited to this. It may be realized in a printing apparatus, and the shaft supporting the print head may be fixed by the shaft disposing method according to the present invention.

[0081] (6) In the above-described embodiments, the coil spring _{42 lef} t, 4 as a biasing means
2 _right , 62 _top , and 62 _bottom are used, but it is a matter of course that the present invention is not limited to this. For example, various springs such as a disc spring and a leaf spring, and other elastic bodies may be used. it can.

(7) The above-described embodiments and the modifications shown in (1) to (6) may be appropriately combined.

[0083]

According to the present invention, since the present invention is constructed as described above, it is possible to use a high-torque motor without using a high-torque motor.
Manufacture of a device in which two shafts are arranged so that two shafts movably supporting an object such as a carriage are arranged in parallel in a predetermined direction according to the movement of the object. An excellent effect that cost can be reduced is exhibited.

[Brief description of the drawings]

FIG. 1 is a schematic configuration explanatory view showing an example of a cutting device that implements an example of an embodiment of a shaft arranging method according to the present invention, and a reference view showing a coordinate system thereof.

FIG. 2 is a partially enlarged view as viewed from an arrow A in FIG. 1;
FIG. 2 is an explanatory view showing a front shaft and a rear shaft provided on a side member, and FIG. 2B is an explanatory view showing a front opening and a rear opening formed on a side member and coordinates thereof. It is a reference drawing showing a system.

FIG. 3 is an explanatory diagram schematically showing a state in which a front shaft, a rear shaft, a right shaft, and a left shaft are provided, and a reference diagram showing a coordinate system thereof.

FIG. 4 (a) is an explanatory view showing specific conditions of a shaft disposing method according to the present invention, and FIG. 4 (b) shows another embodiment of a shaft disposing method according to the present invention. FIG.

[Explanation of symbols]

 Reference Signs List 10 cutting device 12 base member 14L, 14R side member 16 rear member 18-1, 18-2 rail 20 table 22 front shaft 22a end 24 rear shaft 24a end 28 carriage 30 right shaft 30a end 32 left shaft 32a end 34 support member 36 cutter 40_left, 40_right Front opening 40a_left, 40a_right Flat bottom
Face 40b_left, 40b_right, 40d_left,
40d_right Side part 40c_left, 40c_rightUp
Face part 42_left, 42_right, 62_top, 62
_bottom Coil spring 44_left, 44_right, 64_top, 64
_bootto Locking screw 50_left, 50_right Rear opening 50a_left, 50a_right Corner 52_left, 52_right, 72_top, 72
_bottom   Scissor spring 54_left, 54_right, 56_left, 56
_right, 74_top, 74_bottom, 76
_top, 76_bottom   Fixing screw 60_top, 60_bottomm Right opening 60a_top, 60a_bottom On the bottom
Plane 60b_top, 60b_bottom, 60d_top, 6
0d_bottom Side part 60c_top, 60c_bottomUp
Face part 70_top, 70_bottom  Left opening 70a_top, 70a_bottom Corner 100 Workpiece

Claims (5)

[Claims] A first member disposed between support members in a predetermined direction;
The method of arranging the two shafts, the method comprising: arranging the two shafts when the object is movably supported along the axial direction of the two shafts by the two shafts; The one shaft is located on the plane of the opening formed in the support member, and is urged by the urging means against the plane of the opening, against the urging force of the urging means. And a shaft slidable on the plane. 2. The method according to claim 1, wherein the object supported by the two shafts moves along an axial direction of the two shafts according to a predetermined driving force. At this time, the one shaft is slid on the plane of the opening so as to approach or separate from the other shaft against the urging force of the urging means, and the two shafts are parallelized. The method of arranging the shaft to be located at 3. The method for arranging a shaft according to claim 1, wherein said urging means is a coil spring. 4. The method for arranging a shaft according to claim 1, wherein the one shaft is a columnar body. 5. The method for arranging a shaft according to any one of claims 1, 2, 3, and 4, wherein the object is provided between the two shafts via a slide bearing. A method of arranging a shaft that is movably supported in an axial direction.