JP5741120B2 - Portable cutting machine - Google Patents

Description

  The present invention relates to a portable cutting machine, and more particularly to a portable cutting machine provided with a mechanism for adjusting a cutting depth of a cutting blade.

  A conventional portable cutting machine will be described with reference to FIGS.

  As shown in Patent Document 1, the portable cutting machine includes a cutting depth adjusting mechanism so that the protruding amount of the circular saw blade 15 from the bottom surface of the base 17 can be adjusted.

  The cut depth adjusting mechanism includes a link 5 that is rotatably fixed to the base 17, a pin portion 4a that is provided in a long hole 5a of the link 5 provided in the cutting machine body, and holds the link 5 together with the pin portion 4a. A cam-like fixing member 3 that rotates, and the fixing member 3 rotates in conjunction with the operation of the operating portion 8, so that the link 5 is sandwiched between the pin portion 4 a and the fixing member 3, and the cutting machine main body with respect to the link 5 It is comprised so that movement of can be controlled.

JP 2010-36269 A

  In the conventional portable cutting machine, when the size of the cam-like fixing member 3 and the thickness of the link 5 vary due to processing accuracy, the amount pressed by the cam of the fixing member 3 is not necessarily as shown in FIG. In some cases, the link 5 cannot be pressed toward the cutting machine body (pin portion 4a) and the cutting machine body cannot be fixed. In addition, when the elastic portion (elastic body) 13 is provided between the cam-like fixing member 3 and the link 5, the elastic portion 13 is deformed during long-term use, and the cutting machine main body is deformed. Fixing force (pressing force to the pin portion 4a) becomes weak, and fixing of the cutting machine body and the link 5 may become unstable.

  In order to solve the above-described problem, the object of the present invention is to make it possible to adjust the fixing force due to variation in the dimensions of parts such as a fixing member in a portable cutting machine having a cutting depth adjusting mechanism having a cam-like fixing member. It is an object of the present invention to provide a portable cutting machine capable of adjusting a stable cutting depth.

  In order to solve the above problems, the present invention can be achieved by providing an adjustment mechanism that can move the fixing member relative to the guide member and can arbitrarily adjust the position of the fixing member.

That is, the present invention provides a main body including a cutting blade that is driven by a motor to cut a workpiece, a housing that houses the motor, and a saw cover that is fixed to the housing and covers a part of the outer periphery of the cutting blade. And a base that is connected to the main body and that is in contact with the workpiece and has an opening that projects the cutting blade from the contact surface with the processing member, and the contact surface of the cutting blade. A protrusion amount adjusting mechanism for adjusting a protrusion amount of the base member, the protrusion amount adjusting mechanism provided on either the base or the housing, and a link portion extending from either the base or the housing. And a fixing member that restricts movement of the cutting blade relative to the abutment surface together with the link portion, wherein the fixing member restricts movement of the cutting blade. In this state, an adjustment member capable of adjusting the position of the fixing member with respect to the link portion is provided.

  According to such a configuration, even when there is a dimensional error or the like of the fixing member, the fixing force of the link portion and the fixing member can be adjusted by adjusting the position of the fixing member, and stable. The depth of cut can be adjusted.

  Moreover, it is preferable that the said adjustment member adjusts the fixing force of the said link part and the said fixing member by moving the said fixing member to the said link part side.

  According to such a structure, the fixing force of a link part and a fixing member can be easily adjusted by adjusting the position of a fixing member, and the stable cutting depth adjustment can be performed.

  In addition, a long hole formed in the link portion and extending along the extending direction, and a pin portion provided in the main body and positioned in the long hole, the fixing member is moved to the pin portion side by the adjusting member. It is preferable that the pinching force between the pin portion and the fixing member is adjusted by moving the pin portion toward the link portion.

  According to such a configuration, it is possible to adjust the fixing force between the pin portion and the fixing member by the adjusting member, and it is possible to reliably adjust the penetration depth.

  Further, the protrusion amount adjusting mechanism includes an operation unit and a guide member that connects the operation unit and the fixing member, and is configured such that the front fixing member moves in conjunction with the operation of the operation unit, The fixing member is formed with a hole having an inner diameter larger than the outer diameter of the guide member while the guide member is inserted, and the fixing member can be moved within the range of the hole by the adjusting member. Is preferred.

  According to such a structure, since a fixing member can be moved within the range of a hole part, the fixing force of a link part and a fixing member can be adjusted.

  The guide member has a shaft portion disposed in the hole portion and provided with a guide member side plane portion. The hole portion has a fixed member side plane portion that engages with the plane portion. It is preferable that the dimension along the direction is formed so that the fixed-member-side planar portion is larger than the guide-member-side planar portion, and the dimensions in the direction perpendicular to the planar surface are substantially equal.

  According to such a configuration, the fixing member can be moved along the plane, and the fixing member can be rotated in conjunction with the operation unit. Therefore, the fixing force can be adjusted and the cutting depth can be easily set.

  Moreover, it is preferable that the said fixing member has a fixing | fixed part connected with the said guide member, and an elastic part extended from this fixing | fixed part and contactable with the said link part.

  According to such a configuration, even when the fixing member is moved excessively, the link portion and the fixing member can be fixed and released by elastic deformation of the elastic portion.

  Moreover, it is preferable that the said adjustment member is screwed together with the said main body while being comprised from a screw member.

  According to such a configuration, the fixing force can be easily adjusted by simply turning the screw.

  Further, it is preferable that one end of the adjusting member is in contact with the fixing member, and the other end is arranged to be operable from the outside. Moreover, it is preferable that the other end of the said adjustment member is located on extension of the said opening part.

  According to such a configuration, the adjustment member can be easily operated from the outside. Moreover, if it is located on the opening extension of the base, there is no need to provide an adjustment hole or the like of the adjustment member.

  In addition, the link part and the fixing member are located on the side surface side of the cutting blade, the adjustment member is located on the opposite side of the link part with respect to the fixing member, and the adjustment member includes the fixing member. It is preferable to move in parallel with the side surface of the cutting blade.

  According to such a configuration, the fixing force can be adjusted while maintaining the parallelism of the cutting blade with respect to the base.

  Furthermore, according to the present invention, a cutting blade that is driven by a motor to cut a workpiece, a housing that holds the motor, and a saw cover that is connected to the housing and covers approximately half of the outer periphery of the cutting blade are provided. A main body, a base connected to the main body and formed with an opening that abuts against the workpiece and projects the cutting blade from a surface abutting against the workpiece; and from the opening of the cutting blade A protrusion amount changing mechanism capable of changing the protrusion amount, and the protrusion amount adjusting mechanism is disposed at a position on a side surface side of the cutting blade and a link portion extending from either the base or the housing. A fixed state that is provided on either the base or the housing and moves in one direction in a direction orthogonal to the rotation axis of the cutting blade and is fixed to the link portion, and moves in the other direction and moves forward. A fixing member that is movable relative to the link portion; a guide member that movably attaches the fixing member to the base or the housing; and guides the operation of the fixing member; A portable cutting machine provided with a fixed member and operating an operation of the fixed member, wherein the guide member is an axis member parallel to a rotation axis of the cutting blade, and the guide member is connected to the fixed member. Is provided with a surface for transmitting the rotation of the guide member to the fixed member at the fitting portion of the guide member and the fixed member, and the fixed member is movable with respect to the guide member. The position of the fixing member that is arranged in the main body on the opposite side of the link portion with respect to the fixing member and is movable with respect to the guide member in the fixed state. It is characterized in that an adjustment member for adjusting the angle is provided.

  According to such a configuration, even when there is a dimensional error such as the fixing member, the fixing force of the link portion and the fixing member can be adjusted while maintaining the parallelism with respect to the base of the cutting blade, Stable cutting depth adjustment can be performed.

  The present invention further includes a cutting blade that is driven by a motor to cut a workpiece, a housing that houses the motor, and a saw cover that is fixed to the housing and covers a part of the outer periphery of the cutting blade. A main body, a base connected to the main body and formed with an opening for contacting the workpiece and projecting the cutting blade from a contact surface with the processing member; and the contact surface of the cutting blade A protrusion amount changing mechanism that adjusts a protrusion amount from the base, and the protrusion amount adjusting mechanism includes a link portion that extends from either the base or the housing, and either the base or the housing. A portable cutting machine provided with a fixed member that restricts movement of the cutting blade with respect to the contact surface together with the link portion, and the amount of protrusion adjustment of the cutting blade from the contact surface is adjusted in front A step of moving the fixing member so that movement of the cutting blade relative to the link portion can be regulated; and a position of the fixing member with respect to the link portion is adjusted, and the fixing member is linked to the link portion until the fixing member and the link portion abut on each other. And a step of moving to the part side.

  According to such a configuration, after operating the fixing member so that the link portion and the fixing member are fixed when there is no dimensional error or the like of the fixing member, the fixing member is adjusted to adjust the position of the fixing member with respect to the link portion. Since the fixing force between the link portion and the fixing member in the state can be adjusted, a reliable cutting depth can be set.

  According to the present invention, since the distance between the fixing member and the main body (link portion) can be adjusted by the adjusting member, the fixing force of the link portion and the main body can be changed even if there is a dimensional error in the fixing member or the link portion. Can be adjusted to a fixed fixing force.

  Further, by using the adjusting member as a screw member, the fixing force can be easily adjusted when the fixing force between the main body and the link portion becomes weak due to deformation or wear of each member due to long-term use.

The top view of the portable cutting machine concerning embodiment of this invention. The side view of the portable cutting machine concerning embodiment of this invention. The rear view of the portable cutting machine concerning embodiment of this invention. The partially broken side view of the portable cutting machine concerning embodiment of this invention. The principal part enlarged view of FIG. 4 which shows the state which fixed the link of the portable cutting machine concerning embodiment of this invention. AA sectional drawing of FIG. The perspective view which shows one Embodiment of the fixing member concerning embodiment of this invention. The perspective view which shows one Embodiment of the guide member concerning embodiment of this invention. The principal part enlarged view of FIG. 4 which shows the state which moved the link of the portable cutting machine concerning embodiment of this invention. The principal part enlarged view of FIG. 4 which shows the case where the link of the portable cutting machine concerning embodiment of this invention cannot be made into a fixed state. The figure which moved the fixing member by the adjustment member from the state of FIG. The bottom view of the portable cutting machine concerning embodiment of this invention. The principal part enlarged view of FIG. The partially broken side view of the portable cutting machine of a prior art. The principal part enlarged view of FIG. 12 which shows the state which fixed the link of the portable cutting machine of a prior art. The principal part enlarged view of FIG. 12 which shows the case where the link of the portable cutting machine of a prior art cannot be made into the fixed state.

  A portable cutting machine according to an embodiment of the present invention will be described below with reference to FIGS.

  A portable cutting machine (hereinafter referred to as a cutting machine), for example, a circular saw, as shown in FIG. 1, includes a housing 1 containing a motor (not shown), and a gear fixed to the housing 1 and transmitting the rotation of the motor to a cutting blade 15. Etc., a cutting machine main body 4 comprising a gear case 1a, a handle 1b gripped by an operator, and a saw cover 16 that is fixed to the housing 1 (gear case) and covers a part of the cutting blade 15; It is mainly composed of a base 17 that is connected to the cutting machine main body 4 by a cutting depth adjusting mechanism (projection amount adjusting mechanism) and that has an opening 17a that slides on the workpiece and from which the cutting blade 15 projects. . The cut depth adjusting mechanism is supported by the base 17 so as to be rotatable and extends in a direction opposite to the bottom surface of the base 17 (contact surface with the workpiece), and is fixed to the body 4 and fixed to the link 5. The pin part 4a located in the elongate hole 5a and the operation part 8 which fixes and cancels | releases the movement of the main body 4 with respect to the base 17 (link 5) are provided. The link 5 is provided on the side surface side of the cutting blade 5 and between the housing 1 and the saw cover 16. Details of the cut depth adjusting mechanism will be described later. The link 5 may be provided on the main body 4 side, and the pin portion 4a may be provided on the base 17 side. The link 5 may be provided on either the main body 4 or the base 17 as long as the cutting depth can be adjusted.

  Further, as shown in FIGS. 2 and 3, the cutting machine includes a protective cover 19 that covers a portion of the cutting blade 15 positioned below the base 17 that is not covered by the saw cover 16, and the inclination of the cutting blade 15 with respect to the bottom surface of the base 17. And an inclination adjusting mechanism 20 for adjusting the angle.

  When the workpiece is cut by the cutting machine, the motor is rotated by operating the trigger switch 1c, and the rotation of the motor is transmitted to the cutting blade 15 via the gear and rotated. When the base 17 is placed on the workpiece and the operator holds the handle 1b and slides the main body 4 in the direction of arrow A in FIG. 2, the protective cover 19 is cut by being pressed against the workpiece. The cutting blade 15 is exposed by rotating counterclockwise around the blade shaft 15a. Thereby, the workpiece can be cut by the cutting blade 15.

  Further, when changing the angle of the cutting blade 15 with respect to the bottom surface of the base 17, that is, when performing inclined cutting, the knob of the inclination adjusting mechanism 20 is loosened, and the main body is set to a desired angle around the rotation axis in the horizontal direction of FIG. This can be done by tilting 14 and tightening the knob.

  Further, when adjusting the amount of protrusion of the cutting blade 15 from the bottom surface of the base 17 (the surface in contact with the workpiece), that is, the cutting depth, the fixing member 3 is rotated by the operation unit 8, and the main body 4 and the base 17 are rotated. The main body 4 is moved along the link 5 (long hole 5a) with the connecting portion 18 as a fulcrum, and the fixing member 3 is moved by the operation portion 8 when the desired depth of cut is reached. By rotating, the link 5 and the fixing member 3 cooperate to fix the main body 4 and the base 17, that is, the movement of the cutting blade 15 with respect to the base 17 is restricted, so that the cutting depth (cut from the bottom surface of the base 17 is cut). What is necessary is just to set the protrusion amount of the blade 17).

  Here, the cutting machine according to the present invention includes a cutting machine main body 4 due to variations in dimensions due to processing accuracy of the components of the cutting depth adjusting mechanism including the link 5 or the like, or wear of the components due to long-term use, etc. The fixing of the base 17 (link 5) is prevented from becoming unstable, and the depth of cut can be stably adjusted even when dimensional variation or wear occurs. Hereinafter, the cutting depth adjusting mechanism of the cutting machine according to the present invention will be described in detail with reference to FIGS.

  As shown in FIGS. 4 to 6, the cutting depth adjusting mechanism of the cutting machine has a pin portion 4 a fixed to the main body 4 inserted in the long hole 5 a of the link 5 that is rotatably supported by the base 17. When the main body 4 is moved with respect to the base 17, the pin portion 4a is movable in the elongated hole 5a. The link 5 is attached to the base 17 so as to be pivotable in the left-right direction in FIG. 4 with the pivot shaft 5b as a fulcrum in conjunction with the movement of the main body 4. A part of the link 5 is sandwiched between the pin part 4 a and the fixing member 3 (elastic part 13), and the plate 6 is attached to the main body by the bolt 21 so that the link 5 and the fixing member 3 are not separated from the main body 4. The movement is regulated by the plate 6. A screw 2 serving as an adjustment member is disposed on the main body 4 on the side opposite to the link 5 with respect to the fixing member 3. The adjustment member 2, the fixing member 3, the guide member 7, and the operation unit 8 are provided on the main body 4.

  As shown in FIGS. 7 and 8, the cam-shaped fixing member 3 (fixing portion) is provided with a hole (long hole) 9 through which the guide member 7 passes, and the hole 9 is formed in the cam-shaped full length direction (in FIG. 7). A pair of planes 10 parallel to the vertical direction). The guide member 7 has a hook 14 for locking with the main body 4, a shaft 11 that is inserted into each hole of the fixing member 3, the plate 6, and the operation portion 8. A pair of flat surfaces 11 a that engage with the flat surface 10 of the hole 9 are provided. A screw 7 a is cut at an end portion of the shaft portion 11 opposite to the flange 14, and the fixing member 3, the plate 6, and the operation portion 8 are fixed to the main body 4 by screwing with the nut 22. The hole 9 is a long hole that is long in the direction of the plane 10, and the hole size is longer than the length in the radial direction (plane 11 a direction) of the shaft portion 11. The relative position of the hole 9 with respect to the shaft portion 11 is It can be changed. That is, the inner diameter dimension along the plane 10 of the hole 9 is formed larger than the radial outer dimension along the plane 11a of the shaft section 11 (the plane 10 is longer than the plane 11a), and the hole 9 and the shaft section. The diameter dimensions orthogonal to the planes 10 and 11a of 11 are formed to be substantially equal. With such a configuration in which the flat surfaces are fitted to each other, the fixing member 3 is configured to be movable in the left-right direction in FIG. 5 and not movable in the vertical direction. Each plane functions as a fitting portion.

  The guide member 7 and the fixing member 3 are attached to the main body 4. As shown in FIG. 6, the shaft portion 11 of the guide member 7 is disposed so as to be parallel to the cutting blade shaft 15 a and penetrate the main body 4, the fixing member 3 and the plate 6. 3 is arranged. A screw 7 a is cut at the tip of the shaft portion 11, and the fixing member 3, the plate 6, and the operation portion 8 are fixed to the main body 4 by screwing with the nut 22. The plate 6 is fixed to the main body 4 with bolts 21 in contact with the pin portion 4 a of the main body 4. A link 5 is disposed on the outer periphery of the pin portion 4a.

  A part of the link 5 on the guide member 7 side is provided with an elastic portion 13 of the fixing member 3 so as to be in contact with the inner diameter of the hole 9 of the fixing member 3 and the outer periphery of the shaft portion 11 of the guide member 7. A gap 12 is formed between them. Therefore, as shown in FIG. 5, the hole 9 of the fixing member 3 is provided so that a gap 12 is formed in a direction parallel to the plane 10 even when the shaft portion 11 of the guide member 7 is inserted. The fixing member 3 can move in a direction parallel to the plane 10 with respect to the guide member 7.

  Further, the adjustment member 2 is screwed to the main body 4 (gear case 1a) so as to come into contact with the fixing member 3 on the side opposite to the link 5 with respect to the guide member 7.

  The cut depth adjusting operation by the cut depth adjusting mechanism having the above configuration will be described with reference to FIGS.

  From the state of FIG. 5 in which the main body 4 is fixed to the base 17 (link 5), the operation portion 8 is rotated clockwise around the shaft portion 11 of the guide member 7 as shown in FIG. At this time, the guide member 7 and the fixing member 3 are also rotated in conjunction with the operation of the operation portion 8, and the biasing of the elastic portion 13 against the link 5 is released, so that the main body 4 and the base 17 (link 5) are fixed. Is released, and the depth of cut can be adjusted. Since the flat surface 11 a of the guide member 7 and the flat surface 10 of the fixing member 3 are engaged (fitted), the guide member 7 is also rotated in conjunction with the rotation of the operation unit 8. Is transmitted to the fixing member 3, so that the fixing member 3 can also rotate.

  After adjusting the cutting depth to a desired position, the operation unit 8 is rotated counterclockwise to restrict the movement of the main body 4 with respect to the base 17 (link 5). If the size of the fixing member 3 and the thickness of the link 5 vary due to processing accuracy or the like, as shown in FIG. 10, the elastic portion 13 cannot contact and press the link 5 and is elastic. A gap is generated between the portion 13 and the link 5, and the main body 4 cannot be fixed at a desired cutting depth position. Alternatively, when the elastic portion 13 is deformed during long-term use and the fixing force of the main body 4 by the elastic portion 13 (the pressing force to the pin portion 4a) becomes weak, similarly, the main body 4 and the link 5 The fixing of the will become unstable.

  Therefore, in the present invention, the adjustment member 2 is provided so that the position of the fixing member 3 with respect to the link 5 can be adjusted. The adjustment member 2 is a screw member and is screwed to the main body 4 (FIG. 6). One end of the adjustment member 2 is in contact with the fixing member 3 and the other end can be operated from the outside, that is, the opening 17a of the base 17. It arrange | positions so that it may be located above. For example, the adjustment member 2 is advanced and retracted by inserting a flathead screwdriver or a hexagon wrench through the opening 17a, and rotating the adjustment member 2 by engaging with the other end. Since the fastening force (fixing force) between the link 5 and the fixing member 3 can be adjusted by the advancement / retraction of the adjustment member 2, it is possible to prevent the adjustment of the cutting depth due to the variation of the member from becoming unstable. .

  The position adjustment of the fixing member 3 is performed according to the following procedure. The operating portion 8 is operated, and the fixing member 3 is rotated to a position where the link 5 is pressed against the main body 4 (pin portion 4a) by the cam portion (elastic portion 13) of the fixing member 3 as shown in FIG. Since one end of the fixing member 3 and the adjusting member 2 are in contact with each other, as shown in FIGS. 12 and 13, a minus driver or a hexagon wrench is inserted into the other end side of the adjusting member 2 from the opening 17 a of the base 17 to adjust By rotating the member 2, the fixing member 3 moves in the direction of arrow B shown in FIG. At this time, since there is a gap 12 between the outer periphery of the shaft portion 11 of the guide member 7 and the inner periphery of the hole 9 of the fixing member 3, the fixing member 3 is guided by the plane 10 of the hole 9 and the plane 11 a of the guide member 7. To move in the direction of arrow B. The elastic part 13 abuts on the link 5, the link 5 is sandwiched between the pin part 4 and the elastic part 13, and the urging force by the elastic part 13 reliably and stably fixes the main body 4 and the base 17 (link 5). The adjustment member 2 is rotated until the force is reached. Therefore, according to the present invention, since the position of the fixing member 3 can be adjusted by moving the position of the adjusting member 2, the fixing force of the main body 4 and the link 5 by the fixing member 3 (elastic portion 13) can be arbitrarily set. It can be adjusted and a stable fixing force can be obtained. The rotation of the adjustment member 2 can be operated from the base opening 17a through which the cutting blade 15 passes as shown in FIG. Moreover, the other end side of the adjustment member 2 can be easily operated (rotated) from the base opening 17a attached to the main body 4 so as to face the base opening 17a. The link 5 is fixed to the base 17 so as to be rotatable by a link holding member 5b. In addition, the link 5 is disposed on the side surface of the cutting blade 15 and the fixing member 3 tightens the link 5 in the direction parallel to the side surface of the cutting blade 15, that is, the cutting direction (parallel to the arrow A in FIG. 2). A highly accurate cutting operation can be performed without deviation of the parallelism of the cutting blade 15 with respect to the base 17 after the height adjustment. Furthermore, since the adjustment member 2 also adjusts the fixing member 3 in a direction parallel to the side surface of the cutting blade 15, the parallelism of the cutting blade 15 with respect to the base 17 does not shift even after the position adjustment of the fixing member 3.

  In the above-described embodiment, the pin portion 4a is inserted into the long hole 5a of the link 5, and a part of the link 5 is sandwiched between the pin portion 4a and the fixing member 3 (elastic portion 13). Instead of forming the long hole 5a, the fixing member 3 may be provided on one side with respect to the link 5, and the member corresponding to the pin portion 4a may be provided on the other side to sandwich the link 5. Furthermore, the fastening direction of the fixing member 3 is a direction parallel to the side surface of the cutting blade 15, but may be a direction orthogonal to the side surface (a direction parallel to the shaft 15a). Further, the adjustment member 2 is configured to be operable from the base opening 17a, but may be operated from a place other than the base opening 17a. For example, an adjustment member adjustment hole is provided in the base 17, or a lever connected to the fixing member 3 is provided on the side surface side (the front side in FIG. 5) of the fixing member 3. You may comprise so that it may push on. That is, any configuration may be used as long as the fixing force between the link 5 and the fixing member 3 can be adjusted.

  1 is a housing, 2 is an adjustment member, 3 is a fixing member, 3a is a hole, 4 is a main body, 4a is a pin portion, 5 is a link, 5a is a long hole, 5b is a rotating shaft, 6 is a plate, 7 is a guide member , 8 is an operation part, 9 is a hole, 10 is a plane of a fixing member, 11 is a shaft part, 11a is a plane of a guide member, 12 is a gap, 13 is an elastic part (elastic body), 14 is a hook, 15 is a cutting blade , 16 is a saw cover, 17 is a base, 18 is a connection portion, 19 is a protective cover, 20 is an inclination adjusting mechanism, 21 is a bolt, and 22 is a nut.

Claims (11)

A cutting blade driven by a motor to cut the workpiece;
A main body comprising: a housing that houses the motor; and a saw cover that is fixed to the housing and covers a part of the outer periphery of the cutting blade;
A base connected to the main body and formed with an opening that contacts the workpiece and protrudes the cutting blade from a contact surface with the processing member;
A protrusion amount adjusting mechanism that adjusts a protrusion amount of the cutting blade from the contact surface;
The protrusion amount adjusting mechanism is provided with a link portion extending from one of the base and the housing, and rotatably provided on the other of the base or the housing, and the link portion according to a rotation position. A portable cutting machine having a fixing member that restricts movement of the cutting blade relative to the contact surface,
An adjusting member that adjusts the fixing force between the link portion and the fixing member by moving the fixing member toward the link portion by adjusting the position of the fixing member with respect to the link portion at a predetermined rotation position. A portable cutting machine characterized by comprising. The adjustment member has an operation part, and the fixing member is configured to rotate in conjunction with the operation of the operation part,
The portable cutting machine according to claim 1 , wherein the adjustment member changes a relative position between the fixing member and the operation unit by adjusting a position of the fixing member . An elongated hole formed in the link portion and extending along the extending direction, and a pin portion located in the elongated hole and provided in the main body,
3. The clamping force between the pin portion and the fixing member is adjusted by moving the fixing member toward the pin portion by the adjusting member and moving the fixing member toward the link portion. The portable cutting machine as described. The protrusion amount adjusting mechanism includes a guide member that connects the operation unit and the fixing member,
The fixing member is formed with a hole having an inner diameter larger than an outer diameter of the guide member while the guide member is inserted,
The portable cutting machine according to claim 2 or 3 , wherein the fixing member is movable within the range of the hole by the adjusting member . The guide member has a shaft portion that is disposed in the hole portion and includes a guide member side plane portion, and the hole portion has a fixed member side plane portion that engages with the guide member side plane portion,
The dimension along the plane of each plane part is such that the fixed member side plane part is formed larger than the guide member side plane part, and the dimension in the direction orthogonal to the plane is substantially equal. The portable cutting machine according to claim 4, characterized in that: The fixing member includes a fixing portion which is connected to the guide member, portable claim 4 or 5, characterized in that it has a said link portion extending from the fixing portion and the contact resilient portion Cutting machine. The adjusting member, portable cutting machine according to any of claims 1 to 6, characterized in that it is screw fitted to the body with consists screw member. The portable cutting machine according to claim 7, wherein one end of the adjustment member is in contact with the fixing member, and the other end is arranged to be operable from the outside. The portable cutting machine according to claim 8, wherein the other end of the adjustment member is located on an extension of the opening. The link part and the fixing member are located on the side surface side of the cutting blade, and the adjustment member is located on the opposite side to the link part with respect to the fixing member,
The portable cutting machine according to claim 1, wherein the adjustment member moves the fixing member in parallel with a side surface of the cutting blade. A cutting blade driven by a motor to cut the workpiece;
A main body comprising a housing that holds the motor, and a saw cover that is connected to the housing and covers substantially half of the outer periphery of the cutting blade;
A base connected to the main body and formed with an opening for contacting the workpiece and projecting the cutting blade from a surface contacting the workpiece;
A protrusion amount adjusting mechanism capable of adjusting the protrusion amount of the cutting blade from the opening,
The protrusion adjustment mechanism is
A link portion extending from either the base or the housing;
Fixing that is arranged at the side surface position of the cutting blade, is provided on either the base or the housing, moves in one direction in a direction orthogonal to the rotation axis of the cutting blade, and is fixed to the link portion A state and a fixing member that moves in the other direction and is movable relative to the link part;
A guide member for movably attaching the fixing member to the base or the housing, and guiding the operation of the fixing member;
In a portable cutting machine having an operation portion provided on the guide member or the fixing member and operating the operation of the fixing member,
The guide member is a shaft member parallel to the rotation axis of the cutting blade, and a hole through which the guide member passes is provided in the fixed member, and the guide member rotates at a fitting portion between the guide member and the fixed member. Each having a surface portion for transmitting to the fixing member, and the fixing member is configured to be movable with respect to the guide member,
In the fixed state, an adjustment member is provided in the main body on the opposite side of the link portion with respect to the fixing member, and adjusts the position of the fixing member movable with respect to the guide member. Portable cutting machine.