JP2016117150A - Processing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To finely adjust the lower movement end position of a processing machine main body without requiring an additional manual tool by solving a problem in that, in a processing machine such as a grooving cutter, a manual tool such as a wrench or screw driver is required in order to finely adjust a stopper face of a conventional stopper device when the cutting depth of a rotary cutter is switched through altering the lower movement end position of a processing machine main body, that is, the improvement of the operability is required in this point.SOLUTION: A processing machine is provided with a fine adjustment dial 24 for adjusting the height-direction position of a stopper block 25 having stopper faces of four step, 25a, 25b, 25c, 25d. The fine adjustment dial 24 is screwed and fitted on a screw shaft part 23a, and can easily be rotationally operated by manual operation. When the fine adjustment dial 24 is vertically displaced by rotational operation, the stopper faces are integrally displaced vertically and their height positions are finely adjusted.SELECTED DRAWING: Figure 15

Description

  The present invention relates to a processing machine that is used when, for example, a groove having a certain depth is cut or cut into a workpiece such as an aluminum material.

  A grooving machine used for grooving includes a base that is brought into contact with the upper surface of a workpiece, and a processing machine body that is supported on the upper surface side of the base so as to be vertically displaceable. The processing machine body includes an electric motor and a cutter blade that rotates using the electric motor as a drive source. The processing machine main body can be displaced up and down between a processing position in which the cutter blade protrudes toward the lower surface with respect to the base and a retracted position in which the cutter blade is retracted upward with respect to the lower surface of the base. With the cutter blade protruding from the lower surface of the base, by rotating the cutter blade into the workpiece and moving the grooving machine, a groove with a certain width and depth is formed on the upper surface of the workpiece. Can be processed.

  From this, the protruding dimension of the cutter blade with respect to the lower surface of the base is the depth of the processed groove, and the depth of the processed groove is arbitrarily set by adjusting the protruding dimension of the cutter blade with respect to the lower surface of the base. Can do. The protruding dimension of the cutter blade with respect to the lower surface of the base can be arbitrarily set by adjusting the vertical position of the processing machine body with respect to the base. Conventionally, techniques for positioning the vertical position of the processing machine main body with respect to the base are disclosed in the following patent documents. The mechanism disclosed in Patent Document 1 has a configuration in which a stopper 163 provided on the processing machine body side is brought into contact with a stopper 161 provided on a blade case on the base side to position the vertical position of the processing machine body. The vertical position of the processing machine main body positioned by changing the position of the stopper 161 can be switched. This mechanism has a configuration in which the vertical position of the processing machine body to be positioned cannot be finely adjusted accurately.

  In contrast, by using multiple standard bolts as conventional positioning members, it is possible to switch the lower end position of the processing machine main body, and by adjusting the tightening amount of each bolt, the lower movement of the processing machine main body A technique has been provided that enables the end position to be finely adjusted.

JP 2007-30314 A

  However, according to the above-described conventional fine adjustment mechanism, the lower moving end position (depth of the groove to be machined) can be finely adjusted by rotating each bolt using a hand tool such as a wrench. It has become. For this reason, in order to finely adjust the depth of the groove portion, it is necessary to prepare a hand tool such as a wrench in order to adjust the tightening amount of the bolt, and it is necessary to further improve the operability in this respect. An object of the present invention is to make it possible to finely adjust the lower end position of a processing machine body without requiring a hand tool such as a wrench from the viewpoint of further improving the operability of the processing machine.

  The above-described problems are solved by the following inventions. A first invention includes a base having an abutting surface that abuts against a workpiece, and a processing machine main body supported so as to be close to and away from the base. The processing machine main body includes an electric motor and a drive source for the electric motor. As a processing machine for processing a workpiece by causing the main body of the processing machine to approach the base and projecting the rotary cutting tool from the contact surface of the base. In 1st invention, the stopper apparatus which regulates the movement end position of the approach side of the processing machine main body with respect to a base is provided. The stopper device has a fine adjustment mechanism that can finely adjust the moving end position on the approaching side by manual operation (toolless).

  According to the first invention, the stopper device can be finely adjusted by manual operation without using a hand tool such as a wrench as in the prior art, and the operability of the processing machine can be further enhanced in this respect. .

  In a second aspect based on the first aspect, the stopper device is a processing machine including a first adjustment mechanism and a second adjustment mechanism. In the second invention, the first adjustment mechanism has a stopper surface for switching the moving end position on the approaching side of the processing machine body. The second adjustment mechanism functions as a fine adjustment mechanism.

  According to the second invention, by making both the first and second adjusting mechanisms toolless, the operability of the processing machine can be further enhanced.

  A third invention is the processing machine according to the second invention, wherein the first adjustment mechanism has a plurality of stopper surfaces whose positions in the approaching and separating directions with respect to the base differ stepwise.

  According to the third invention, the first adjustment mechanism can be quickly switched to a different stopper surface by, for example, a rotation operation or a slide operation, and in this respect, the operability of the first adjustment mechanism and thus the processing machine can be improved. .

  A fourth invention is a processing machine according to any one of the first to third inventions, wherein the fine adjustment mechanism has a reduction function of decelerating and outputting the operation amount of the operation member for fine adjustment. .

  According to the fourth invention, it is possible to easily perform precise fine adjustment by operating the operation member.

  A fifth invention is the processing machine according to the fourth invention, wherein an operating member is fitted to the screw shaft portion and the fine adjustment mechanism has a speed reducing function.

  According to the fifth aspect of the invention, the rotational operation amount of the operation member is decelerated based on the lead of the screw shaft portion and output as a displacement in the screw shaft direction. Accurate fine adjustment can be easily performed by the deceleration function mainly composed of the screw shaft.

  According to a sixth aspect of the present invention, in any one of the first to fifth aspects, the first adjustment mechanism is configured such that the engaging portion provided on the processing machine main body abuts against the stopper surface and the base approaching side of the processing machine main body. It is the processing machine which used as the positive stop mechanism which regulates the movement end position.

  According to the sixth aspect of the present invention, it is possible to quickly switch the moving end position on the base approaching side of the processing machine main body, thereby improving work efficiency. Further, the reproducibility or repeatability of the moving end position on the base approaching side of the processing machine main body can be improved.

  According to a seventh invention, in any one of the second to sixth inventions, the first adjustment mechanism includes a stopper block having a stopper surface on the upper surface and provided for rotation, and the stopper block on the upper surface is elastic. It has a cradle that is pressed automatically. According to the seventh aspect of the invention, a corrugated engagement convex portion is provided on the lower surface of the stopper block and the upper surface of the cradle. According to the seventh aspect of the present invention, the rotation operation position of the stopper block is positioned and the stopper surface is switched by the engagement of the engaging projections.

  According to the seventh invention, the rotation operation position of the stopper block is positioned by meshing between the engaging convex portion on the stopper block side and the engaging convex portion on the cradle side. When the stopper block is rotated, the meshing position of the engaging convex part on the stopper block side and the engaging convex part on the cradle side changes to switch the stopper surface. Depth switches.

It is a right view of the processing machine which concerns on embodiment of this invention. It is the top view which looked at the processing machine from the arrow (II) direction in FIG. It is the front view which looked at the processing machine from the arrow (III) direction in FIG. It is the rear view which looked at the processing machine from the arrow (IV) direction in FIG. It is the left view which looked at the processing machine from the arrow (V) direction in FIG. FIG. 6 is a cross-sectional view taken along line (VI)-(VI) in FIG. 5, and is a vertical cross-sectional view of a cut depth adjusting unit. It is the (VII)-(VII) sectional view taken on the line of FIG. In this figure, the cutter case cover is removed and the cutter is exposed. This figure shows a state in which the processing machine main body is positioned at the upper moving end position. It is a right view of the processing machine of the state which removed the cover part of the cutter case similarly to FIG. 7, and exposed the cutter. This figure shows a state where the processing machine body is moved down to the processing position. It is the bottom view which looked at the processing machine from the arrow (IX) direction in FIG. FIG. 4 is a sectional view taken along the line (X)-(X) in FIG. 3, and is a longitudinal sectional view of the stopper device. This figure shows a state in which the processing machine main body is positioned at the upper moving end position. FIG. 4 is a sectional view taken along the line (X)-(X) in FIG. 3, and is a longitudinal sectional view of the stopper device. However, in this drawing, the processing machine main body is shown in a state where it is moved down to the processing position. It is the longitudinal cross-sectional view which looked at the processing machine from the (X)-(X) arrow direction in FIG. This figure shows a state in which the processing machine main body is positioned at the upper moving end position. This figure shows a state where the stopper block is finely adjusted to a position higher than the position shown in FIG. It is the longitudinal cross-sectional view which looked at the processing machine from the (X)-(X) arrow direction in FIG. This figure shows a state in which the processing machine main body is positioned at the upper moving end position. This figure shows a state where the stopper block is finely adjusted to a position lower than the position shown in FIG. It is a side view of the stopper device concerning a 1st embodiment. In this figure, the stopper block is shown in a developed view. It is a side view of the stopper device concerning a 2nd embodiment. In this figure, the stopper block and the cradle are shown in a developed view.

  Next, an embodiment of the present invention will be described with reference to FIGS. In the following description, with respect to the front-rear direction of the member or the like, the direction in which processing proceeds (processing progress direction) is the front side. A user is located behind the processing machine 1. Accordingly, the left and right directions of the members and the like are used with reference to the user. The left side is called the back side, and the right side is also called the front side. As shown in FIGS. 1 to 5, in this embodiment, as the processing machine 1, a cutter for aluminum grooving, a so-called plunge type processing machine is illustrated. The processing machine 1 includes a base 2 that is mainly brought into contact with the upper surface of the workpiece W, and a processing machine body 10 that is supported on the upper surface side of the base 2.

  The base 2 has a substantially rectangular flat plate shape. In FIG. 1, the lower surface of the base 2 is a contact surface 2 a that contacts the workpiece W. The right side of the upper surface of the base 2 (the surface opposite to the contact surface 2a) is provided in a state where the cutter case 3 for accommodating the cutter blade 11 which is a rotary blade is erected upward. The cutter case 3 is fixed to the upper surface of the base 2. The cutter case 3 can open the right side (front side) by rotating the cover 4 backward. When the cover 4 is opened, the cutter blade 11 accommodated therein is exposed and can be exchanged. An arrow 4 a indicating the rotation direction of the cutter blade 11 (counterclockwise when viewed from the front side) is displayed on the cover 4.

  A dust collection duct 5 is provided at the rear part of the cutter case 3. A dust collection box or a hose of a dust collector is connected to the dust collection duct 5. Dust and the like blown into the cutter case 3 by the rotation of the cutter blade 11 during the processing operation are collected in the dust collection box or dust collector through the dust collection duct 5.

  The processing machine main body 10 includes a reduction gear portion 13 in which a gear case 13a is internally provided with the cutter blade 11, an electric motor 12 as a drive source for rotating the cutter blade 11, and a gear train for reducing the rotational output of the electric motor 12. And a handle portion 14 held by the user. An electric motor 12 is coupled to the back side of the reduction gear unit 13. As shown in FIGS. 10 to 13, the drive gear 12b provided on the output shaft 12a of the electric motor 12 is engaged with the driven gear 13d provided on the spindle 13b. Through the meshing (gear train) of the drive gear 12b and the driven gear 13d, the rotational output of the electric motor 12 is decelerated at a constant reduction ratio and output to the spindle 13b.

  As shown in FIGS. 5 and 10 to 13, an arcuate insertion groove 3 a is provided on the back side of the cutter case 3. A spindle 13b which is an output shaft of the reduction gear portion 13 is projected into the cutter case 3 through the insertion groove 3a, and a cutter blade 11 is attached to the projected portion. As the cutter blade 11, a diamond wheel or a disc-shaped grindstone is used in addition to the illustrated tip saw. The electric motor 12 is a commercial AC motor that uses AC 100 V as a power source, and a power cord 16 for power supply is drawn into the rear portion of the handle portion 14.

  A support arm portion 13c is integrally provided at the rear portion of the gear case 13a so as to protrude rearward. The distal end portion of the support arm portion 13 c is coupled to the base 2 side via the main body support shaft 15. The processing machine body 10 is supported on the upper surface of the base 2 via a main body support shaft 15 so as to be swingable up and down.

  As shown in FIGS. 10 to 13, an arcuate guide groove 3 b is provided on the back side of the cutter case 3. A guide pin 18 provided on the gear case 13a side enters the guide groove 3b. The processing machine main body 10 can swing up and down within a range in which the guide pin 18 can move in the guide groove 3b. As shown in FIGS. 10, 12, and 13, the movement of the guide pin 18 is restricted by the upper end portion of the guide groove 3 b, thereby restricting the upper end position of the processing machine body 10.

  As shown in FIG. 5, the handle portion 14 has a loop shape extending from the upper part to the rear part of the gear case 13a. The handle part 14 has a standing part 14a extending upward from the upper part of the gear case 13a, a connecting part 14b extending rearward from the rear part of the gear case 13a, and a grip part 14c straddling between the standing part 14a and the upper end part of the connecting part 14b. ing. The grip portion 14c is mainly a portion that the user grips with one hand, and a trigger type switch lever 14d that is pulled by the fingertip of the gripped hand is provided on the lower surface thereof. When the switch lever 14d is pulled, the electric motor 12 is activated and the cutter blade 11 rotates.

  On the upper surface of the grip portion 14c, a slide operation type lock lever 14e that is operated with the fingertip of one of the gripped hands is provided. The switch lever 14d can be pulled only when the lock lever 14e is slid to the unlock side. An inadvertent pulling operation of the switch lever 14d is prevented by the lock-off function of the lock lever 14e.

  As shown in FIGS. 4 and 5, a controller 6 for mainly controlling the operation of the electric motor 12 is built in the connecting portion 14 b. Further, a rotary operation type dial 7 for increasing or decreasing the rotational speed of the electric motor 12 is provided on the upper surface of the connecting portion 14b. An intake hole 14g for introducing outside air is provided on the side of the connecting portion 14b.

  An intake hole 12 c for introducing outside air is also provided on the back surface of the electric motor 12. Although not visible in the figure, the electric motor 12 includes a cooling fan. When the electric motor 12 starts and the cooling fan rotates, outside air is introduced from the intake holes 12c and the intake holes 14g. Outside air (motor cooling air) introduced into the motor housing from the intake hole 12c flows forward, and the winding portion such as the rotor is mainly cooled. The controller 6 is cooled by the outside air introduced from the intake hole 14g. The outside air introduced from the intake hole 12c and the intake hole 4g joins in the vicinity of the front portion of the electric motor 12, and is exhausted to the outside through an exhaust port 13e provided in the side portion of the reduction gear unit 13.

  A sub-grip 14f gripped with the other hand is provided at the front portion of the upright portion 14a so as to protrude to the left. The handle portion 14 having the grip portion 14c and the subgrip 14f is grasped with both hands so that the processing machine 1 is securely supported and can be moved easily. A spindle lock lever 8 for locking the rotation of the output shaft 13 is provided on the right side of the upright portion 14a. By operating the spindle lock lever 8, the rotation of the spindle 13b can be locked, thereby making it easy to replace the cutter blade 11.

  As described above, the processing machine main body 10 is supported by the main body support shaft 15 so as to be swingable up and down. As shown in FIG. 5, the processing machine main body 10 is biased in a direction of swinging upward by a biasing force of a compression spring 17 interposed between the processing machine body 10 and the base 2. 1 to 7 show a state where the processing machine main body 10 is returned to the upper moving end position (standby position) by the urging force of the compression spring 17. As shown in FIG. 7, in a state where the processing machine body 10 is returned to the upper moving end position, the cutter blade 11 is retracted upward from the base 2 and is not protruded to the lower surface side of the base 2.

  The user can swing the processing machine body 10 downward against the urging force of the compression spring 17. FIG. 8 shows a state in which the processing machine main body 10 is pushed down and the lower portion of the cutter blade 11 protrudes toward the lower surface side of the base 2. When the processing machine body 10 is pushed down to the processing position where the lower portion of the cutter blade 11 is projected to the lower surface side of the base 2 while rotating the cutter blade 11, the lower portion of the cutter blade 11 cuts into the workpiece W into a V shape or the like. Rarely, grooving can be performed.

  The protruding amount of the cutter blade 11 to the lower surface side of the base 2 corresponds to the depth of the groove portion to be processed into the workpiece W. For this reason, the depth of the groove part to be processed can be adjusted by changing the vertical swing position of the processing machine body 10 with respect to the base 2. A stopper device 20 for restricting the lower end position (processing position) of the processing machine body 10 is provided in the vicinity of the front surface of the base 2.

  The stopper device 20 includes a first adjustment mechanism 21 and a second adjustment mechanism 22. The first adjustment mechanism 21 has a function of switching the lower moving end position of the processing machine body 10 in a stepwise manner. The second adjustment mechanism 22 functions as a fine adjustment mechanism for finely adjusting the lower moving end position switched by the first adjustment mechanism 21 in the vertical direction. As shown in FIGS. 6 and 10 to 13, a stopper support column 23 is provided in a state of standing upward near the upper surface front portion of the base 2. The stopper support column 23 has a screw shaft portion 23a on the lower side in the axial direction and a support shaft portion 23b on the upper side in the axial direction. The stopper support column 23 is fixed so that the screw shaft portion 23a is screwed to the base 2 and the fixing nut 28 is tightened, so that the stopper support column 23 cannot rotate around the axis and cannot move in the axial direction.

  A fine adjustment dial 24 is supported on the screw shaft portion 23 a of the stopper support column 23. A screw hole is formed on the inner peripheral side of the fine adjustment dial 24. The screw shaft portion 23a is screwed to the screw hole. For this reason, the fine adjustment dial 24 can be displaced up and down by rotating the fine adjustment dial 24. On the peripheral surface of the fine adjustment dial 24, a plurality of ridges 24a are provided along the axial direction for preventing slipping when the user manually rotates.

  A cradle 26 is in contact with the upper surface of the fine adjustment dial 24. The cradle 26 is supported by a guide rail portion 3 c provided on the back surface of the cutter case 3 so as to be movable in parallel up and down. The rotation and inclination of the cradle 26 are regulated by the guide rail portion 3c. A stopper block 25 is in contact with the upper surface of the cradle 26. The stopper block 25 is urged in a direction (downward) to be pressed against the cradle 26 by a compression spring 27.

  The stopper block 25 is supported by the support shaft portion 23b of the stopper support column 23 so as to be rotatable and vertically movable in the axial direction. FIG. 14 shows the stopper block 25 in an unfolded state. On the upper surface of the stopper block 25, four stopper surfaces 25a to 25d having different positions in the height direction (vertical direction) are provided. The four stopper surfaces 25 a to 25 d are arranged in a step shape so that the height changes stepwise around the axis of the stopper support column 23. As shown in FIG. 2, the four stopper surfaces 25 a to 25 d occupy a fan-shaped region over a range of four equal parts in the circumferential direction. The first stopper surface 25a is the highest stopper surface, and has a function of setting a reference depth (0 point adjustment) with respect to a protruding dimension (cutting depth of the cutter blade 11) of the cutter blade 11 from the lower surface of the base 2. Yes. The first stopper surface 25a is marked with “0” indicating that it is a zero-point adjusting stopper surface.

  The second stopper surface 25b adjacent to the first stopper surface 25a in the counterclockwise direction is a stopper surface that is 3.0 mm lower than the first stopper surface 25a, and the cutting depth of the cutter blade 11 is further set to be greater than the reference depth. It has a function of deepening 3.0 mm. The second stopper surface 25b is marked with “3.0” indicating that the depth of cut is 3.0 mm deeper than the reference depth (0 point). The third stopper surface 25c adjacent to the second stopper surface 25b in the counterclockwise direction is a stopper surface that is 1.0 mm lower than the second stopper surface 25b, and the cutting depth of the cutter blade 11 is smaller than the reference depth. Furthermore, it has a function to deepen by 4.0 mm. The third stopper surface 25c is marked with “4.0” indicating that the cut depth is 4.0 mm deeper than the reference depth.

  The fourth stopper surface 25d adjacent to the third stopper surface 25c counterclockwise is the lowest of the four stopper surfaces, and is lower by 2 mm than the third stopper surface 25c. With the fourth stopper surface 25d, the cutting depth of the cutter blade 11 with respect to the workpiece W is set deeper by 6.0 mm than the reference depth. The first stopper surface 25a is positioned counterclockwise with respect to the fourth stopper surface 25d. The first stopper surface 25a is a stopper surface that is 6.0 mm higher than the fourth stopper surface 25d.

  Engaging recesses 25aa, 25ba, 25ca, and 25da are provided on the lower surface of the stopper block 25 corresponding to the stopper surfaces 25a, 25b, 25c, and 25d. The engaging recesses 25aa, 25ba, 25ca, and 25da are provided at four equal positions on the same circumference. On the other hand, a ball plunger 26 a having a steel ball biased by a spring is embedded in the upper surface of the cradle 26. When the steel ball of the ball plunger 26a is elastically fitted in each engagement recess 25aa (or 25ba, 25ca, 25da), the stopper block 25 is held in the quarter position. Conversely, the user can manually rotate the stopper block 25 against the urging force of the ball plunger 26a.

  By rotating the stopper block 25, a stopper surface arbitrarily selected from the first stopper surface 25a to the fourth stopper surface 25d can be moved to the rearmost position. In this embodiment, as will be described later, the stopper surface located at the rearmost position is effective. In FIG. 2, the first stopper surface 25a located at the rearmost position is effective. By switching the effective stopper surface, the lower end position of the processing machine body 10 can be changed, and therefore the cutting depth of the cutter blade 11 with respect to the workpiece W can be switched in four stages.

  At the front part of the gear case 13a of the processing machine body 10, an engaging part 19 is provided in a state of protruding forward. As shown in FIG. 11, when the processing machine body 10 is swung downward, the engaging portion 19 comes into contact with the stopper surface 25a (or 25b, 25c, 25d) located at the rearmost side. The lower end position (processing position) of the processing machine main body 10 is positioned by the contact of the engaging portion 19 with the stopper surface 25a (or 25b, 25c, 25d) located on the rearmost side. By positioning the lower end position of the processing machine body 10, the protruding dimension (cut depth) of the cutter blade 11 from the lower surface of the base 2 is determined. As described above, in the present embodiment, the cutting depth can be switched in four stages: reference depth, reference depth +3.0 mm, reference depth +4.0 mm, and reference depth +6.0 mm.

  The reference depth can be set using the second adjustment mechanism 22. When the user grips and rotates the fine adjustment dial 24 of the second adjustment mechanism 22 with the fingertip, the fine adjustment dial 24 itself is displaced up and down by screw fitting between the screw hole on the inner periphery and the screw shaft portion 23a. . As shown in FIG. 12, when the fine adjustment dial 24 is rotated and displaced upward from the height position shown in FIG. 10, the cradle 26 translates upward. As the cradle 26 moves upward in parallel, the stopper block 25 is integrally displaced upward. The cradle 26 and the stopper block 25 are displaced upward against the compression spring 27. Conversely, when the fine adjustment dial 24 is rotated as shown in FIG. 13 to be displaced downward from the height position shown in FIG. 10, the cradle 26 and the stopper block 25 are pushed down by the urging force of the compression spring 27. To move downward. In this way, the fine adjustment dial 24 is manually rotated to finely adjust the vertical position (height position) of the stopper block 25 continuously, thereby the first stopper surface for setting the reference depth. By finely adjusting the height position of 25a, the reference depth position of the cutter blade 11 can be accurately set.

  Further, by rotating the fine adjustment dial 24 to be displaced up and down, the positioning heights formed by the second to fourth stopper surfaces 25b, 25c and 25d can be finely adjusted continuously. The positioning by the stopper surfaces 25b, 25c, and 25d can be finely adjusted continuously by rotating the fine adjustment dial 24 manually.

  According to the stopper device 20 configured as described above, the first adjustment mechanism 21 that switches the cutting depth of the cutter blade 11 with respect to the workpiece W at the lower moving end position of the processing machine body 10 is a so-called positive stop. Since it can function as a mechanism, the desired depth of cut can be reproduced quickly and accurately, thereby improving work efficiency.

  In addition, when the cutting depth of the cutter blade 11 is switched in four stages, it is sufficient if the stopper block 25 of the first adjustment mechanism 21 is gripped with a fingertip and rotated, and a hand tool such as a wrench or screwdriver is required separately. Since there is no (toolless), good operability of the stopper device 20 can be ensured.

  Further, the height positions of the stopper surfaces 25 a to 25 d of the first adjustment mechanism 21 can be finely adjusted by the second adjustment mechanism 22. In the case of fine adjustment, since it is sufficient to pick and rotate the fine adjustment dial 24 with the same fingertip, there is no need to separately prepare a hand tool such as a wrench or screwdriver as in the prior art. The operability of the device 20 is further enhanced. Thus, according to the stopper device 20 of the present embodiment, the first adjustment mechanism 21 that switches the cutting depth of the cutter blade 11 in stages, and the second adjustment that finely adjusts each cutting depth by the first adjustment mechanism 21. Since the user can operate the mechanism 22 by manual operation without using a separate hand tool, the operability can be further improved as compared with the conventional case.

  Further, the fine adjustment dial 24 is displaced up and down to finely adjust the vertical positions of the first to fourth stopper surfaces 25a to 25d of the first stopper mechanism 21. In the illustrated embodiment, the fine adjustment dial 24 is screwed to the screw shaft portion 23a. For this reason, the fine adjustment dial 24 can be displaced up and down by rotating around the axis of the screw shaft portion 23a. From this, the rotational operation amount of the fine adjustment dial 24 is decelerated based on the lead of the screw shaft portion 23a and is output as a displacement in the vertical direction. The rotational operation amount of the fine adjustment dial 24 is decelerated by the deceleration function of the screw shaft portion 23a and is output as a vertical displacement. Compared to a configuration in which the fine adjustment dial is directly displaced up and down for fine adjustment operation. Thus, more precise fine adjustment can be easily performed.

  In the stopper device 20 according to the present embodiment, as illustrated above, the function of the first adjustment mechanism 21 is to switch the lower end position of the processing machine body 10 step by step (four steps in the present embodiment). 2 The function of the adjustment mechanism 22 is to perform fine adjustment of the stopper surfaces 25a, 25b, 25c, and 25d that are switched in stages by the first adjustment mechanism 21, and the function of the second adjustment mechanism 22 is as follows. It can be understood as a stopper mechanism that continuously changes the lower end position of the processing machine body 10, and therefore the stopper device 20 can be regarded as a configuration having two independent stopper mechanisms different in adjustment form. it can.

  Various modifications can be made to the embodiment described above. For example, the stopper surface provided in the stopper block 25 may be configured to be provided in two stages, three stages, or five or more stages in addition to the structure provided in four stages as illustrated. A configuration may be adopted in which the stopper block is provided with one stopper surface and fine adjustment in the height direction is performed by the second adjustment mechanism 22 exemplified.

  Further, in the stopper device 20, in order to position the first to fourth stopper surfaces 25a to 25d with respect to the cradle 26, a ball plunger 26a is provided on the cradle 26, and the ball of the ball plunger 26a is placed on the stopper block 25 side. Although it was set as the structure engaged with the provided engagement recessed parts 25aa-25da, it is good also as a structure using the corrugated curved surface as shown in FIG. The members and structures that are the same as those in the first embodiment exemplified above and do not need to be changed are not described using the same reference numerals.

  In the case of the stopper device 30 of the second embodiment, four corrugated engagement convex portions 31, 32, 33, 34 are provided on the lower surface of the stopper block 25 corresponding to the stopper surfaces 25a, 25b, 25c, 25d. Is provided. The four engaging convex parts 31 to 34 are provided at the quarterly positions on the same circumference. On the other hand, four corrugated engagement convex portions 35, 36, 37, and 38 are also provided on the upper surface of the cradle 26. The four engaging convex portions 31 to 34 on the stopper block 25 side and the engaging convex portions 35 to 38 on the cradle 26 side are formed in a waveform that meshes with each other almost without any gap.

  The four engaging convex portions 31 to 34 on the stopper block 25 side and the four engaging convex portions 35 to 38 on the cradle 26 side are engaged with each other, so that the stopper block 25 is positioned at the circumferentially equally divided position. Thus, any one of the first stopper surface 25a to the fourth stopper surface 25d can be switched to an effective stopper surface.

  The stopper block 25 is rotated against the urging force of the compression spring 27. In the stopper block 25, the engagement positions of the engaging convex portions 31 to 34 and the engaging convex portions 35 to 38 are gradually shifted and raised by the rotation operation, and the engaging convex portions 31 to 34 are engaged with the engaging convex portions 35 to 38. If you get over it, it will shift to the next and mesh again. According to the stopper device 30 of the second embodiment, the effective stopper surface 25a (or 25b, 25c, 25d) can be switched quickly and accurately, and the desired cutting depth can be reproduced quickly and accurately. As a result, work efficiency can be improved. Further, similarly to the first embodiment, the stopper device 30 of the second embodiment also has a toolless structure that is sufficient if the stopper block 25 is picked and rotated by a fingertip. Sex is secured.

  Finally, although the processing machine 1 provided with the circular cutter blade 11 was illustrated, the stopper device 20 illustrated in the router which is also used for grooving or the like by attaching a rod-shaped bit as a cutting tool can be applied.

W ... Processing material 1 ... Processing machine (grooving machine)
DESCRIPTION OF SYMBOLS 2 ... Base, 2a ... Contact surface 3 ... Cutter case, 3a ... Insertion groove hole, 3b ... Guide groove, 3c ... Guide rail part 4 ... Cover, 4a ... Arrow 5 which shows the rotation direction of the cutter blade 11 ... Dust collection duct 6 ... Controller 7 ... Dial 8 ... Spindle lock lever 10 ... Processing machine body 11 ... Cutter blade 12 ... Electric motor, 12a ... Output shaft, 12b ... Drive gear 13 ... Reduction gear part 13a ... Gear case, 13b ... Spindle, 13c ... Support Arm part, 13d ... driven gear 13e ... exhaust port 14 ... handle part 14a ... standing part, 14b ... connecting part, 14c ... grip part, 14d ... switch lever 14e ... lock lever, 14f ... sub grip 15 ... main body support shaft 16 ... Power cord 17 ... Compression spring 18 ... Guide pin 19 ... Engagement part 20 ... Stopper device (first embodiment)
21 ... 1st adjustment mechanism (positive stop mechanism)
22 ... Second adjustment mechanism (fine adjustment mechanism)
23 ... Stopper support column, 23a ... Screw shaft portion, 23b ... Support shaft portion 24 ... Fine adjustment dial, 24a ... Projection 25 ... Stopper block 25a ... First stopper surface (for zero point adjustment), 25aa ... Engaging recess 25b ... second stopper surface (for +3.0 mm), 25ba ... engagement recess 25c ... third stopper surface (for +4.0 mm), 25ca ... engagement recess 25d ... fourth stopper surface (for +6.0 mm), 25da ... Engaging recess 26 ... cradle 26a ... Ball plunger 27 ... Compression spring 28 ... Fixing nut 30 ... Stopper device (second embodiment)
31-34, 35-38 ... engagement convex part

Claims (7)

A base having an abutting surface to be brought into contact with the workpiece, and a processing machine body supported so as to be close to and away from the base;
The processing machine main body includes an electric motor and a rotary blade that rotates using the electric motor as a drive source. The processing machine main body is brought close to the base so that the rotary blade protrudes from the contact surface of the base. A processing machine for processing a workpiece,
A stopper device for restricting a moving end position on the approaching side of the processing machine main body with respect to the base, the stopper device having a fine adjustment mechanism capable of finely adjusting the moving end position on the approaching side by manual operation; Processing machine. The processing machine according to claim 1, wherein the stopper device includes a first adjustment mechanism and a second adjustment mechanism, and the first adjustment mechanism is configured to switch a moving end position on the approach side of the processing machine body. The processing machine has a stopper surface, and the second adjustment mechanism functions as the fine adjustment mechanism. 3. The processing machine according to claim 2, wherein the first adjustment mechanism has a plurality of stopper surfaces whose positions in the approaching and separating directions with respect to the base differ in stages. 4. The processing machine according to claim 1, wherein the fine adjustment mechanism has a reduction function of decelerating and outputting an operation amount of an operation member for fine adjustment. 5. The processing machine according to claim 4, wherein the operation member is fitted to a screw shaft portion and the fine adjustment mechanism has a deceleration function. The processing machine according to any one of claims 2 to 5, wherein the first adjustment mechanism causes an engagement portion provided on the processing machine body to abut against the stopper surface. A processing machine with a positive stop mechanism that regulates the position of the lower moving end. The processing machine according to any one of claims 2 to 6, wherein the first adjustment mechanism includes a stopper block having the stopper surface on an upper surface and provided to be rotatable, and the stopper on the upper surface. The block has a cradle that is elastically pressed, and a corrugated engagement convex portion is provided on the lower surface of the stopper block and the upper surface of the cradle, and the stopper block is rotated by meshing the engagement convex portion. A processing machine configured to position and switch the stopper surface.

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