JPH1190730A - Stopper device for sliding mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stopper device for sliding mechanisms by which the position of a circular saw is not displaced when a slide is locked. SOLUTION: On the inner peripheral side of a cylindrical part 2b provided on the underside of a table 2, a fixing ring 10 is provided on the outer peripheral side of a slide bar 5 so that it can move in its radial direction, and a fixing screw 11 inserted into the cylindrical part 2b is structured to be pressed against the slide bar 5 through a screw hole 10a of the fixing ring 10. Thus, since the pressing forces of the fixing screw 11 and the fixing ring 10 are applied on opposite directions, and are the same in the magnitude, the slide bar 5 is not displaced in its radial direction, and thus the circular saw body 4 supported on the slide bar 5 cannot be also displaced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stopper device for fixing a slide position of a slide bar,
For example, the present invention relates to a stopper device for fixing a sliding position of the circular saw body in a circular saw machine in which the circular saw body is slidably supported in a table surface direction via a slide bar.

[0002]

2. Description of the Related Art Conventionally, as this type of stopper device,
For example, as disclosed in Japanese Patent Application Laid-Open No. 2-190212, a stopper device of a slide mechanism for supporting a circular saw main body of a circular saw machine so as to be slidable in a table surface direction is known. The conventional stopper device in this circular saw machine has a configuration in which a fixing screw is pressed against a slide bar for slidably supporting the circular saw main body, and the slide bar is locked so as not to move in the axial direction, thereby fixing the slide position of the circular saw main body. Had become.

[0003]

However, according to this conventional stopper device, the slide bar is displaced in the radial direction in order to lock its axial movement only by pressing the fixing screw. There has been a problem that the main body is displaced and it becomes difficult to perform high-precision cutting. In view of the above, the present invention provides a stopper device particularly effective for the slide mechanism of the circular sawing machine and the like, which can fix the slide position without displacing the slide bar in the radial direction. The purpose is to do.

[0004]

According to the present invention, there is provided a stopper device for fixing a slide position of a slide bar by pressing a stopper member against an outer peripheral surface of a slide bar movably supported in an axial direction. The stopper member is configured to press at a plurality of positions toward the axis of the slide bar, and to set the pressing forces at the plurality of positions to a size that balances each other. According to this stopper device, the stopper member is pressed from a plurality of positions with a force of a magnitude balanced with each other toward the axis of the slide bar, so that the axial position is fixed without displacing the slide bar in the radial direction. can do.

[0005] The stopper device according to the second aspect is the first aspect.
The stopper device according to claim 1, wherein a fixing ring is radially movable between an inner peripheral side of a fixed-side cylindrical portion that slide-supports the slide bar and an outer peripheral side of the slide bar, and is fixed to the cylindrical portion. The screw is pressed against the slide bar through the screw hole of the fixing ring. According to this stopper device, when the fixing screw is tightened, the tip protrudes toward the inner peripheral side of the fixing ring and is pressed against the slide bar, whereby the slide bar is pressed against the inner peripheral surface on the opposite side of the fixing ring. . In this way, the slide bar is axially immovably fixed to the fixing ring at two positions opposite to each other between the pressing position of the fixing screw and the pressing position on the fixing ring. In other words, the slide bar is sandwiched between the fixing screws and the fixing ring with the same amount of force from both sides, and the slide position is fixed. The pressing force by the fixing screw and the pressing force by the fixing ring are counterbalanced because they are in opposite directions and have the same magnitude, so that the slide bar does not move in the radial direction. Since the fixing ring cannot be moved in the axial direction because the fixing screw is inserted through the cylindrical part, the slide bar consequently moves in the axial direction without being displaced in the radial direction with respect to the cylindrical part and thus the fixed side. Fixed to impossible.

The fixing ring referred to here includes not only a ring having a perfect annular shape but also a ring having a C-shape or a U-shape, for example. The use of the U-shaped fixing ring facilitates retrofitting to the slide bar. In the case of the configuration according to the second aspect, the inner peripheral surfaces of the fixing screw and the fixing ring correspond to the stopper member according to the first aspect.

According to a third aspect of the present invention, the circular saw main body is slidable in the surface direction of the table via a slide bar supported movably in the axial direction along the surface direction of the table on which the cutting material is placed. A stopper device for fixing a sliding position of the circular saw main body in a circular saw machine supported on the table, wherein a fixing ring is provided on an inner peripheral side of a cylindrical portion provided on the table side and an outer peripheral side of the slide bar. A fixing screw is provided so as to be movable in the radial direction, and a fixing screw inserted into the cylindrical portion is pressed against the slide bar through a screw hole of the fixing ring.

According to this stopper device, when the fixing screw is tightened, its tip protrudes toward the inner peripheral side of the fixing ring and is pressed against the slide bar, whereby the slide bar is brought into contact with the inner peripheral surface on the opposite side of the fixing ring. Is pressed against. In this manner, the slide bar is sandwiched by the fixing screw and the fixing ring from both sides with the same amount of force, and is fixed to the fixing ring so that it cannot move in the axial direction. Since the fixing ring cannot be moved in the axial direction because the fixing screw is inserted into the cylindrical portion, as a result, the slide bar and thus the circular saw main body are fixed so as not to be axially movable with respect to the cylindrical portion and thus the table. You.

Further, the fixing ring is movable in the radial direction with respect to the cylindrical portion, and the fixing screw is simply inserted through the cylindrical portion. The pressing force of the fixing screw and the pressing force of the fixing ring are the same. Since the size acts in the opposite direction, the slide bar is not displaced in the radial direction by tightening the fixing screw, so that even if the circular movement of the circular saw main body is fixed, the circular saw main body is displaced as before. This makes it possible to perform cutting with higher accuracy than before.

In the third aspect, the table side is one form of the fixed side in the second aspect, and refers to the side that slides and supports the slide bar, that is, the side that does not slide.
Therefore, in addition to the configuration in which the cylindrical portion is provided on the lower surface of the table and the slide bar is slidably supported on the lower surface side of the table, the arm is extended upward from the table, and the cylindrical portion is provided at the tip of this arm, and May be slid and supported above the table.

According to the fourth aspect of the present invention, there is provided the stopper device.
Or the stopper device according to 3, wherein a regulating protrusion is provided on one of an inner peripheral surface of the cylindrical portion or an outer peripheral surface of the fixing ring, and a regulating recess is provided on the other, and the regulating protrusion is fixed to the regulating recess. The ring is engaged in the axial direction while allowing radial displacement of the ring, thereby restricting the inclination of the fixed ring in the axial direction. According to this stopper device, in addition to the operation and effect of the configuration according to claim 2 or 3, when the slide bar is slid, the fixing ring is prevented from being inclined in the axial direction due to, for example, vibration and interfering with the slide bar, Thereby, a smooth and reliable sliding operation can be obtained.

By arranging the restricting projection on the side opposite to the fixing screw in the circumferential direction, the inclination of the fixing ring can be most effectively restricted. The regulating protrusion may be provided at a plurality of positions in the circumferential direction of the cylindrical portion or the fixing ring. Further, the regulating protrusion can be provided on one of the cylindrical portion and the fixing ring, and the other can be provided with a regulating concave portion facing the regulating protrusion. Get the effect.

Various examples are conceivable as specific examples of the regulating projection. For example, a screw is screwed into the cylindrical portion and its tip (regulation protrusion) is engaged with the fixing ring, or a pin is driven into the cylinder portion and the tip (regulation protrusion) is formed.
Or a plate-like projection (restriction projection) is formed on the inner peripheral surface of the cylindrical portion, and this is inserted and engaged with a groove formed on the peripheral surface of the fixing ring. Alternatively, two protrusions (regulation protrusions) may be formed at regular intervals on the inner peripheral surface of the cylindrical portion, and the edge of the fixing ring may be sandwiched between the protrusions.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a first embodiment of the present invention will be described with reference to FIGS. In the present embodiment, as an example of the slide mechanism, a stopper device 20 of the slide mechanism that supports the circular saw body 4 of the circular saw machine 1 so as to be movable in the table surface direction will be described. FIG. 1 shows an entire circular saw 1 provided with a stopper device 20 according to the present embodiment. In the drawing, reference numeral 2 denotes a table on which a cutting material is placed, which is rotatably supported by a base 3. As shown in FIG. 2, two slide bars 5, 5 are supported on a lower surface of the table 2 via bearings 6 (linear ball bearings) so as to be parallel to each other and movable in the table surface direction. This constitutes a slide mechanism for supporting the circular saw main body 4 movably along the table surface direction.

A left-right tilting mechanism 7 is attached to the rear ends (left ends in the drawing) of the slide bars 5, 5, and the circular saw main body 4 is connected to the tip of an arm 8 on the tilting side via a tilting fulcrum 9. It is mounted so that it can be tilted up and down. The present embodiment is characterized by the stopper device 20 of the slide mechanism, and the table 2 itself, the left and right tilting mechanism 7 and the circular saw main body 4 do not require any particular change.
These descriptions are omitted.

Now, the stopper device 20 according to the present embodiment will be described.
Is set for only one of the two slide bars 5 and 5. Needless to say, a stopper device 20 described below may be set for both slide bars 5 and 5. The bearings 6 and 6 are held in parallel with each other on the inner peripheral side of a cylindrical holding tubular portion 2 a formed on the lower surface of the table 2. The rear part (left end in the figure) of the holding cylinder part 2a on the upper side in the figure is a cylindrical part 2b whose diameter is slightly increased.
The stopper device 20 of the present embodiment is incorporated in the cylindrical portion 2b, and details thereof are shown in FIG. A fixed ring 10 is located on the inner peripheral side of the cylindrical portion 2b, and the slide bar 5 is inserted through the inner peripheral side of the fixed ring 10. On the top of the cylindrical portion 2b, a knob 1 for rotating operation is provided on the head.
A fixing screw 11 to which 1a is attached is mounted.
The fixing screw 11 is inserted into the inner peripheral side (insertion hole 12 a) of the sleeve 12 attached to the upper part of the cylindrical part 2 and screwed into a screw hole 10 a formed on the upper part of the fixing ring 10.

The sleeve 12 is made of urethane rubber and has an inner diameter slightly smaller than the screw diameter of the fixing screw 11. For this reason, the fixing screw 11 is
Therefore, the fixing screw 11 is held with an appropriate force by the elastic force of the sleeve 12, so that the fixing screw 11 is not loosened by vibration or the like. On the other hand, since the screw hole 10a of the fixing ring 10 penetrates the inner peripheral side, the fixing screw 11
, The tip protrudes inward. Since the fixing ring 10 is formed to have an outer diameter slightly smaller than the inner diameter of the cylindrical portion 2b, a slight annular gap is formed between the two, so that the fixing ring 10 moves with respect to the cylindrical portion 2b. It is slightly movable in the radial direction. Further, the inner diameter of the fixing ring 10 is formed to be slightly larger than the outer diameter of the slide bar 5, so that a slight gap is formed between the two, so that the inside of the cylindrical portion 2 b of the fixing ring 10 is formed. Radial movement is allowed.

According to the stopper device 20 of the present embodiment configured as described above, when the fixing screw 11 is loosened, FIG.
As shown in FIG. 1A, the tip is not pressed against the slide bar 5, so that the slide bars 5 and 5 are allowed to move in the axial direction. ). On the other hand, when the fixing screw 11 is rotated in the tightening direction, the fixing screw 11
As a result, the distal end of the fixing ring 10 is protruded toward the inner peripheral side of the fixing ring 10 and is brought into contact with the slide bar 5. When the fixing screw 11 is further tightened as it is, the slide bar 5 does not move in the radial direction, so that the fixing ring 10 is lifted upward in the cylindrical portion 2b, and thereby, the lower part of the inner peripheral surface of the fixing ring 10 Is pressed against the slide bar 5. This state is shown in FIG. Thus, the slide bar 5 is sandwiched between two positions, the pressing position A of the fixing screw 11 and the pressing position B at a position substantially 180 ° opposite to the pressing position A (the lower part of the inner peripheral surface of the fixing ring 10). As a result, the slide bar 5 is fixed to the fixing ring 10 so as not to move in the axial direction.

The fixing screw 11 is inserted into the insertion hole 12 of the sleeve 12.
a, it is immovable in the axial direction of the cylindrical portion 2b, so that the fixing ring 10 and thus the slide bar 5 are fixed immovably in the axial direction. Since one of the slide bars 5 cannot move in the axial direction, the other slide bar 5 also cannot move in the axial direction.
Is fixed in the direction of the table surface. When the fixing screw 11 is tightened in this way, the fixing screw 11 and the fixing ring 10
Is pressed, so that the slide bar 5 is fixed to the fixing ring 10 so as not to move in the axial direction. Retaining ring 10
Is movable in the radial direction with respect to the cylindrical portion 2b, and the fixing screw 11 is merely inserted through the insertion hole 12a of the cylindrical portion 2b.
Is not constrained in the radial direction. Moreover, the fixing screw 1
The pressing force by 1 and the pressing force by the fixing ring 10 are balanced because the directions in which they act are opposite and the magnitudes are the same. For this reason, the slide bar 5 is fixed in the axial direction without being displaced in the radial direction by tightening the fixing screw 11, and as a result, the circular saw main body 4 is displaced as in the related art even if the slide operation is fixed. Therefore, the cutting process can be performed with higher precision than before.

Next, an embodiment (second embodiment) of the invention described in claim 3 will be described. This second embodiment is also the first
Similarly to the embodiment, the stopper device 30 in the slide mechanism that slides and supports the circular saw main body 4 in the table surface direction is illustrated. The stopper device 30 of the second embodiment is characterized in that a function for restricting the inclination of the fixing ring 10 in the stopper device 20 of the first embodiment is added. The description of the same components or members as in the first embodiment will be omitted, and the same reference numerals will be used in the following description. Details of the stopper device 30 of the second embodiment are shown in FIGS. This second stopper device 30
Also, as in the first embodiment, the fixing ring 31 is accommodated in one cylindrical portion 2b of both holding cylindrical portions 2a, 2a provided on the lower surface of the table 2 and the inner peripheral side of the cylindrical portion 2b. The slide bar 5 is inserted through the inner peripheral side of the fixing ring 31 so as to be movable in the axial direction. The fixing screw 33 has a screw shaft portion 33a and a knob portion 33b, and the screw shaft portion 33a is screwed into a screw hole 31a formed on an upper portion of the fixing ring 31 through an insertion hole 32 provided in an upper portion of the cylindrical portion 2b. ing. The screw hole 31a penetrates the inner peripheral side. On the other hand, the insertion hole 32 provided in the cylindrical portion 2b has a diameter sufficient to allow the screw shaft portion 33a of the fixing screw 33 to be inserted without looseness. In this regard, in the first embodiment, the inner peripheral hole of the urethane rubber sleeve 12 attached to the upper portion of the cylindrical portion 2b is used as the insertion hole 12a. The insertion hole 32 is provided by directly drilling a hole in the cylindrical portion 2b.

Next, at the lower end of the fixing ring 31, a regulating hole 31b is formed as an example of a regulating recess. In the case of the present embodiment, the restriction hole 31b is
1 is formed so as to penetrate the inner peripheral side, but it is not always necessary to penetrate the inner peripheral side, and a bottomed hole having a bottom on the inner peripheral side may be used. In short, any hole that opens to the outer peripheral side may be used. On the other hand, a screw hole 34 is formed at the lower end of the cylindrical portion 2b so as to face the regulating hole 31b. A regulating screw 35 is screwed into the screw hole 34 from the outer peripheral side, and a tip end of the regulating screw 35 is inserted into the regulating hole 31 b of the fixing ring 31 through the screw hole 34. The regulating hole 31b is formed as small as possible with a diameter that allows the screw shaft portion 35a of the regulating screw 35 to be inserted to be inserted without resistance. The length of the screw shaft portion 35a of the regulating screw 35 is such that its tip does not abut the slide bar 5 even when the regulating screw 35 is screwed into the screw hole 34 most deeply as shown in the figure. It is set as follows.

With the stopper device 30 of the second embodiment configured as described above, the same operation and effect as those of the stopper device 20 of the first embodiment can be obtained. That is, when the fixing screw 33 is tightened, the screw shaft portion 33 a is abutted against the slide bar 5. When the fixing screw 33 is further tightened in this abutting state, the fixing ring 31 is lifted upward, and the inner peripheral surface of the lower end portion is pressed against the slide bar 5. Further, fix the fixing screw 33 to the fixing ring 31.
Then, the fixing screw 33 is more firmly abutted against the slide bar 5, and the inner peripheral surface of the lower end portion of the fixing ring 31 is more firmly pressed against the slide bar 5. As described above, the upper and lower portions of the slide bar 5 are sandwiched between the fixing screw 33 and the inner peripheral surface of the lower end of the fixing ring 31, so that the slide bar 5 is fixed so as not to slide in the axial direction.

When the fixing screw 33 is tightened, an external force is applied to the slide bar 5 in the direction of displacing downward by the fixing screw 33, while the slide bar 5 is displaced upward by the inner peripheral surface of the lower end of the fixing ring 31. External force is applied. Since both external forces act in opposite directions and have the same magnitude, they cancel each other out. As a result, the slide bar 5 does not displace in the radial direction, so that the circular saw main body 4 does not displace even if the sliding operation is fixed. . Moreover, in the case of the second embodiment, the displacement of the fixing ring 31 in the axial direction is restricted by the restriction screw 35 being inserted into the insertion hole 31b provided at the lower end of the fixing ring 31 without looseness. According to this,
Since the inclination of the fixing ring 31 is restricted, for example, when the slide bar 5 is slid, the fixing ring 31 is inclined by vibration or the like, so that the fixing ring 31 interferes with the slide bar 5 and hinders the sliding operation of the slide bar 5. Is prevented.

In the first and second embodiments described above,
Various changes can be made. For example, in the first embodiment (similarly in the second embodiment), a configuration in which the slide bar 5 is constrained in the axial direction at two positions, a pressing position A of the fixing screw 11 and a pressing position B of the fixing ring 10 is exemplified. However, the slide bar 5 is formed on the inner peripheral surface of the fixing ring 10 at two positions in the circumferential direction 120 ° with respect to the screw holes 10a so as to protrude toward the inner peripheral side, thereby allowing the slide bar 5 to move in the circumferential direction. Can be restrained in several places. By increasing the number of constrained portions in this way, more stable (no misalignment)
A slide lock can be realized.

Also, according to the illustrated configuration, the fixing screw 11
Is a so-called point contact, and the pressing position B of the fixing ring 1 is a so-called line contact. However, between the fixing screw 11 and the slide bar 5, the inner peripheral surface contacts the slide bar 5. By interposing a piece formed on the circular arc surface and forming a fixed angle range of the lower inner peripheral surface of the fixed ring 10 with a curvature that comes into contact with the slide bar 5, two places in the circumferential direction of the slide bar 5 are formed. It is possible to restrain the circular saw main body 4 more securely by fixing the circular saw main body 4 without shifting the position thereof. Furthermore, although the fixing ring 10 having a perfect annular shape is illustrated as the fixing ring, it may be a C-shaped or U-shaped fixing ring, for example. By making the fixing ring U-shaped, the fixing ring can be easily attached to the slide bar 5 later.
Further, a fixing ring having an elliptical shape or an oval shape may be used.

The pressing force exerted on the slide bar 5 by the stopper member does not necessarily have to be the same. In other words, if the two pressing positions are point-symmetrical positions, the pressing forces applied to both positions can be made equal by setting the same pressing force. When the above pressing positions are not at equal positions around the axis, the vertical and horizontal component forces can be balanced by appropriately differentiating the pressing forces. In short, it is only necessary to set so that the pressing force of the stopper member at a plurality of positions is balanced with each other so that a force for displacing the slide bar in the radial direction is not generated.

In the second embodiment, various types of regulating protrusions may be used instead of the regulating screw 35 shown in the drawings. For example, the regulating pin is driven in such a manner as to protrude toward the inner peripheral side of the cylindrical portion 2b, and the distal end is fixed to the fixing ring 31.
May be inserted into the restriction hole 31b. In addition, a plate-shaped regulating plate is formed on the inner peripheral surface of the cylindrical portion 2b as a regulating protrusion so as to protrude toward the inner peripheral side, and this regulating plate is inserted into a groove formed on the peripheral surface of the fixed ring to thereby prevent its axial direction. May be restricted. Further, two regulating plates may be formed so as to protrude, and the edge of the fixing ring 31 may be sandwiched between the two regulating plates to regulate the inclination thereof. or,
The restricting protrusion is not limited to one as illustrated, but the cylindrical portion 2b
May be provided at a plurality of locations on the inner peripheral surface.

Further, in the second embodiment, the configuration in which the regulating protrusion (for example, the regulating screw 35) is provided on the cylindrical portion 2b side is exemplified. The restriction hole may be provided on the cylindrical portion side. In this case as well, in addition to the screws described above, various forms such as pins or control plates may be used as the control projections.

Further, in the above-described two embodiments, the fixing screws 11, 33 are directly pressed against the slide bar 5, but the present invention is not limited to this, and the same operation and effect can be obtained by, for example, the following configuration. be able to. That is, although not shown, a pair of stopper members whose intervals are reduced by tightening the fixing screws may be provided, and a slide bar may be sandwiched between the two stopper members to restrict the slide operation of the slide bar. According to this stopper device, the slide bar is sandwiched by the pair of stopper members from the opposite direction with the same force, and the slide position of the slide bar is fixed. Therefore, the slide bar is fixed in the slide direction without being displaced in the radial direction. be able to. In this case, since the fixing screw is not a member pressed against the slide bar, it can be arranged at a position away from the slide bar. The same effect can be obtained by pressing the stopper member with a uniform force at three or more locations on the outer peripheral surface of the slide bar.

Lastly, the circular saw 1 of the type in which the cylindrical portion 2a is provided on the lower surface of the table 2 and the slide bar 5 is slidably supported on the lower surface side of the table 2 has been exemplified.
The present invention can be similarly applied to a circular sawing machine of a type in which an arm is extended upward from a table, and a similar cylindrical portion is provided at the end of the arm and a slide bar is slidably supported above the table.

[Brief description of the drawings]

FIG. 1 is an overall side view of a circular saw machine.

FIG. 2 is a partially cutaway plan view of the table, as viewed in the direction indicated by an arrow (2) in FIG. 1;

FIG. 3 is a longitudinal sectional view of the slide stopper device according to the first embodiment of the present invention.

FIG. 4 is a sectional view taken along line (4)-(4) of FIG.
Indicates a state in which the slide mechanism is not locked, and (B)
Indicates a state where the slide mechanism is locked.

FIG. 5 is a longitudinal sectional view of a slide stopper device according to a second embodiment of the present invention.

6 is a sectional view taken along line (6)-(6) of FIG. 5, and FIG.
Indicates a state in which the slide mechanism is not locked, and (B)
Indicates a state where the slide mechanism is locked.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Circular saw machine 2 ... Table 2a ... Holding cylinder part, 2b ... Cylindrical part 3 ... Base, 4 ... Circular saw body 5 ... Slide bar 6 ... Bearing 10 ... Fixing ring, 10a ... Screw hole 11 ... Fixing screw, 11a ... Knob 12: sleeve, 12a: insertion hole 20: slide stopper device (first embodiment) 30: slide stopper device (second embodiment) 35: regulating screw

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Masahiko Miura 3-11-8 Sumiyoshicho, Anjo City, Aichi Prefecture Makita Co., Ltd.

Claims (4)

[Claims] 1. A stopper device for fixing a sliding position of a slide bar by pressing a stopper member against an outer peripheral surface of a slide bar movably supported in an axial direction, wherein the stopper member faces an axis of the slide bar. A stopper device for a slide mechanism, wherein the stopper device is configured to be pressed at a plurality of locations and to set the pressing forces at the plurality of locations to a size that balances each other. 2. The stopper device according to claim 1, wherein:
A fixing ring is interposed radially movably on the inner peripheral side of the fixed-side cylindrical portion that slide-supports the slide bar and on the outer peripheral side of the slide bar, and a fixing screw inserted through the cylindrical portion is screwed into the fixing ring. And a stopper device for a slide mechanism configured to be pressed against the slide bar through the above. 3. A slide bar supported movably in the axial direction along the surface of the table on which the cutting material is placed,
A stopper device for fixing a sliding position of the circular saw main body in a circular sawing machine that supports a circular saw main body so as to be slidable in a surface direction of the table, wherein the inner peripheral side of a cylindrical portion provided on the table side is provided. A fixing ring is interposed radially movably on the outer peripheral side of the slide bar, and a fixing screw inserted into the cylindrical portion is pressed against the slide bar through a screw hole of the fixing ring. A stopper device for a slide mechanism in a circular sawing machine. 4. The stopper device according to claim 2, wherein a regulating projection is provided on one of an inner peripheral surface of the cylindrical portion or an outer peripheral surface of the fixing ring, and a regulating concave portion is provided on the other. A stopper device for a slide mechanism, wherein the restricting protrusion is configured to engage in the axial direction while permitting radial displacement of the fixing ring to restrict the inclination of the fixing ring in the axial direction.