JP2015221540A - Cutting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutting machine which includes a cutting blade angle adjustment mechanism, is easily manufactured, and makes errors less likely to occur with a simple structure.SOLUTION: A cutting machine includes: a motor; an output shaft 42D which is rotated by rotation of the motor, the output shaft 42D to which a cutting blade is detachably attached; a housing which supports the motor and the output shaft; and a base connected with the housing and having a contact surface which may contact with a processed material. The housing includes: a first housing 41A; and a second housing 45. The first housing includes a first bearing 43 which pivotally supports the output shaft. The second housing includes a second bearing 44 which pivotally supports the output shaft. The cutting machine includes adjustment means 6, 8 which adjust a position of the second housing relative to the first housing so as to adjust a position of the second bearing relative to the first bearing.

Description

  The present invention relates to a cutting machine, and more particularly to a cutting machine capable of adjusting the angle of a cutting blade.

  For example, the cutting machine described in Patent Document 1 includes a slide mechanism, and adjusts the angle of the housing with respect to the slide shaft using a screw and an adjustment shaft included in the slide mechanism, thereby adjusting the angle of the cutting blade. it can.

JP 2000-158401 A

  In the cutting machine as described above, since the angle of the heavy main body is directly adjusted, the angle adjustment may be difficult. In addition, since the supporting portion of the heavy main body is provided with an angle adjusting mechanism that allows displacement and deformation, errors are likely to occur. Furthermore, in order to reduce the error, it is necessary to make the angle adjustment mechanism large and complicated, and there are problems such as difficulty in manufacturing or an increase in manufacturing cost. In view of the above, an object of the present invention is to provide a cutting machine with excellent operability that can adjust the angle of a cutting blade with a simple structure and a simple operation.

  In order to solve the above problems, the present invention relates to a motor, an output shaft that is rotated by the rotation of the motor, and a cutting blade is detachably attached, a housing that supports the motor and the output shaft, and a housing connected to the housing. A cutting machine having a base having a contact surface capable of abutting against a workpiece, wherein the housing has a first housing and a second housing, and the first housing has the output shaft. The second housing has a second bearing that supports the output shaft, and the position of the second bearing with respect to the first bearing can be adjusted. Provided is a cutting machine comprising adjusting means for adjusting the position of the second housing relative to the first housing.

  According to the cutting machine having such a configuration, the relative position of the first bearing and the second bearing can be adjusted by adjusting the position of the second housing with respect to the first housing. As a result, the user can change the direction of the output shaft. Therefore, the user can adjust the angle between the cutting blade attached to the output shaft and the contact surface with a simple operation. Note that the position adjustment of the first housing and the second housing can be adjusted by horizontally displacing each other, changing the angle of each other, and combining these.

  In addition, the cutting machine having such a configuration does not adjust the direction of the housing, the slide mechanism, etc. as seen in the prior art, but adjusts the angle of the cutting blade by a simple method of adjusting the direction of the output shaft. Is realized. Therefore, it is not necessary to move a housing or the like having a large mass, and an angle adjustment mechanism that does not easily cause an error can be realized with a simple configuration. Therefore, the angle adjustment mechanism of the cutting blade can be realized with easy manufacturing and low manufacturing costs.

  Furthermore, the first bearing has a first inner ring attached to the output shaft, a first outer ring attached to the first housing, and a plurality of balls provided between the first inner ring and the first outer ring. A second inner ring attached to the output shaft; a second outer ring attached to the second housing; and a plurality of balls provided between the second inner ring and the second outer ring. It is preferable that it is a ball bearing which has.

  According to the cutting machine having such a configuration, by using the ball bearing as the bearing, the output shaft can be rotated even if the directions of the axial centers of the inner ring and the outer ring do not coincide with each other. Therefore, the angle adjusting mechanism of the cutting blade can be realized with a simple configuration.

  Furthermore, it is preferable that the adjusting means is an attachment member that connects the first housing and the second housing and is capable of adjusting the positional relationship between the first housing and the second housing.

  According to the cutting machine having such a configuration, the mounting member connects the first housing and the second housing, and the relative displacement between the first housing and the second housing is adjusted in a state where the relative positional relationship between the two is adjusted. Can be prevented. Therefore, the angle of the cutting blade is prevented from changing during work, and the processing accuracy can be maintained. That is, work quality can be improved. In addition, it is easy to manufacture, and an angle adjusting mechanism for the cutting blade can be realized at a low manufacturing cost.

  Further, the attachment member is configured to attach the second housing to the first housing, and the position of the second housing relative to the first housing can be adjusted by operating the attachment member. preferable.

  According to the cutting machine having such a configuration, it is possible to adjust the position of the second housing relative to the first housing by operating the attachment member. Therefore, the angle of the cutting blade can be adjusted with a simple structure and operation. Therefore, the angle adjustment mechanism of the cutting blade can be realized with easy manufacturing and low manufacturing costs.

  Further, it is preferable that at least three mounting members are provided, and the position of the second housing with respect to the first housing can be adjusted by operating at least one of the mounting members.

  According to the cutting machine having such a configuration, the angle of the cutting blade can be easily adjusted in all directions by using at least three attachment members. Therefore, the angle of the cutting blade in all directions can be adjusted with a simple structure and easy operation. Therefore, the angle adjustment mechanism of the cutting blade can be realized with easy manufacturing and low manufacturing costs.

  Furthermore, it is preferable that the attachment member has a screw member extending in the axial direction of the output shaft.

  According to the cutting machine having such a configuration, since the mounting member has a screw, the angle of the cutting blade can be adjusted by an easy operation using a tool such as a screwdriver. Therefore, the angle adjustment mechanism of the cutting blade can be realized with easy manufacturing and low manufacturing costs.

  Furthermore, it is preferable that the attachment member has a screw member extending in a direction orthogonal to the output shaft.

  According to the cutting machine having such a configuration, since the attachment member extends in the direction orthogonal to the output shaft, adjustment can be performed without interfering with the cutting blade. Therefore, the angle adjustment mechanism of the cutting blade can be realized with easy manufacturing and low manufacturing costs. Further, since the mounting member has a screw, the angle of the cutting blade can be adjusted by an easy operation using a tool such as a screwdriver.

  Furthermore, it is preferable that the adjusting means further includes a deformable interposition member located between the first housing and the second housing.

  According to the cutting machine having such a configuration, the interposition member is deformed corresponding to the gap between the first housing and the second housing due to the presence of the interposition member between the first housing and the second housing. Force can be generated. This makes it possible to prevent loose mounting of the first housing and the second housing. Therefore, the angle of the cutting blade is prevented from changing during the operation, and the processing accuracy can be maintained. That is, work quality can be improved. In addition, it is easy to manufacture, and an angle adjusting mechanism for the cutting blade can be realized at a low manufacturing cost.

  Furthermore, it is preferable that this interposition member is an elastic body.

  According to the cutting machine having such a configuration, the interposed member between the first housing and the second housing is an elastic body such as a leaf spring, rubber, or resin, so that the first housing and the second housing can be attached. It becomes possible to prevent looseness. Therefore, the angle of the cutting blade is prevented from changing during the operation, and the processing accuracy can be maintained. That is, work quality can be improved. In addition, it is easy to manufacture, and an angle adjusting mechanism for the cutting blade can be realized at a low manufacturing cost.

  Further, the second housing is provided so as to be rotatable with respect to the first housing, and the second bearing is installed such that the axis of the second bearing does not coincide with the center of rotation of the second housing. Preferably, the position of the second bearing can be adjusted with respect to the first bearing by rotating the second housing with respect to the first housing.

  According to the cutting machine having such a configuration, the position of the second bearing can be adjusted by the rotation of the second housing by providing the second bearing eccentrically with respect to the second housing. Therefore, it is easy to adjust the angle of the cutting blade with a simple operation without removing the cutting blade. Further, the angle adjusting mechanism of the cutting blade can be realized with a simple configuration.

  Further, it is preferable that the housing has a surface on the side of the cutting blade and a surface on the side of the anti-cutting blade, and the housing is configured such that the mounting member can be operated from the surface side on the side of the anti-cutting blade. .

  According to the cutting machine having such a configuration, adjustment work can be performed without interfering with the cutting blade. Therefore, the user can adjust the angle between the cutting blade and the contact surface with a simple operation without removing the cutting blade. Further, it is possible to realize an angle adjusting mechanism between the cutting blade and the contact surface that is easy to manufacture and low in manufacturing cost.

  Furthermore, it has a support part provided between the base and the cutting blade and supporting the housing on the base, and the contact surface of the base is located on the cutting blade side, and the support part It is preferable to have a swinging support portion that pivotally supports the housing so that it can be moved closer to and away from the base.

  According to the cutting machine having such a configuration, since the cutting machine has the support portion and the swing support portion, it is possible to create a state where the housing is separated from the base and a state where the housing is close to the base. Therefore, the user can install and process the workpiece by a simple operation. In addition, even with such a cutting machine, it is possible to realize an angle adjustment mechanism between the cutting blade and the contact surface that is easy to manufacture and low in manufacturing cost.

  Furthermore, the support portion includes a holder extending from the base and a slide pipe supported by the holder and extending in parallel with the contact surface, and the housing is provided to be slidable with respect to the slide pipe. Preferably it is.

  According to the cutting machine having such a configuration, the user can cut the workpiece while sliding the cutting blade with respect to the slide pipe. Therefore, the user can process the workpiece with a simple operation. Further, even in the cutting machine having such a configuration, it is possible to realize an angle adjustment mechanism between the cutting blade or the sliding direction and the contact surface, which is easy to manufacture and inexpensive to manufacture.

  Furthermore, the support portion includes a holder extending from the base, and a slide pipe that is slidably supported by the holder and extends in parallel with the contact surface, and the housing is fixed to the slide pipe. Is preferred.

  According to the cutting machine having such a configuration, the user can cut the workpiece while sliding the cutting blade integrally with the slide pipe with respect to the holder. Therefore, the user can process the workpiece with a simple operation. Further, even in the cutting machine having such a configuration, it is possible to realize an angle adjustment mechanism between the cutting blade or the sliding direction and the contact surface, which is easy to manufacture and inexpensive to manufacture.

  Further, the base further has an inclination axis on the contact surface, and the inclination axis is capable of inclining the housing with respect to the contact surface about the axis of the inclination axis. It is preferable to hold the holder.

  According to the cutting machine having such a configuration, the user can tilt the cutting blade with respect to the contact surface. Therefore, the user can perform so-called bevel cutting, in which a workpiece is processed with a cutting surface of an arbitrary angle by a simple operation. Further, even in the cutting machine having such a configuration, it is possible to realize an angle adjustment mechanism between the cutting blade or the sliding direction and the contact surface, which is easy to manufacture and inexpensive to manufacture.

  Furthermore, the contact surface is located on the opposite side of the housing with respect to the base, and the cutting blade protrudes on the opposite side of the housing with respect to the contact surface, and the contact of the base on the workpiece It is preferable that the cutting blade can cut the workpiece by sliding the surface.

  According to the cutting machine having such a configuration, the cutting machine can be carried. Therefore, the user can process the workpiece by a simple operation without selecting a place. In addition, even with such a cutting machine, it is possible to realize an angle adjustment mechanism between the cutting blade and the contact surface that is easy to manufacture and low in manufacturing cost.

  ADVANTAGE OF THE INVENTION According to this invention, the cutting machine excellent in operativity which can adjust the angle of a cutting blade with a simple structure and simple operation can be provided.

The side view of the tabletop cutting machine which concerns on the 1st Embodiment of this invention. The front view of the tabletop cutting machine which concerns on the 1st Embodiment of this invention. Sectional drawing along the III-III line of FIG. FIG. 4 is an enlarged view of the encircled line portion in FIG. 3, showing a state where screws are attached from the cutting blade side. It is an enlarged view of the encircled line part of FIG. 3, Comprising: The figure which shows the modification which attached attachment of the screw from the opposite side to a cutting blade. It is a partial side view of the tabletop cutting machine which concerns on the 1st Embodiment of this invention, Comprising: The figure at the time of using the cutting blade for adjustment. Sectional drawing along the VII-VII line of FIG. The detailed sectional view of the gear mechanism and the bearing of the tabletop cutting machine concerning the 1st embodiment of the present invention. The detailed view which shows the state of a gear mechanism and a bearing at the time of inclining a spindle of the tabletop cutting machine which concerns on the 1st Embodiment of this invention. The detailed view which shows the state of the bearing at the time of inclining a spindle of the tabletop cutting machine which concerns on the 1st Embodiment of this invention. It is a side view of the tabletop cutting machine concerning a 1st embodiment of the present invention, and is a figure showing a cutting work state. It is a front view of the tabletop cutting machine concerning a 1st embodiment of the present invention, and is a figure in the state where a housing and a support part were inclined 45 degrees to the left. It is a front view of the tabletop cutting machine concerning a 1st embodiment of the present invention, and is a figure in the state where a housing and a support part were inclined 45 degrees to the right. The side view of the portable cutting machine which concerns on the 2nd Embodiment of this invention. It is a side view of the portable cutting machine which concerns on the 2nd Embodiment of this invention, Comprising: The figure which shows the state using the cutting blade for adjustment. FIG. 16 is a sectional view taken along line XVI-XVI in FIG. 15. The partial side view of the cutting machine which concerns on the 3rd Embodiment of this invention. Sectional drawing along the XVIII-XVIII line of FIG. The partial side view of the cutting machine which concerns on the 4th Embodiment of this invention. Sectional drawing along the XX-XX line of FIG. The partial side view of the cutting machine which concerns on the 5th Embodiment of this invention. Sectional drawing along the XXII-XXII line of FIG.

<First Embodiment>
Hereinafter, a tabletop cutting machine according to a first embodiment of the present invention will be described with reference to FIGS. A tabletop cutting machine 1 which is a cutting tool shown in FIG. 1 is mainly composed of a base portion 2, a support portion 3, and a housing 4, and a cutting blade 7 is attached to the housing 4. The housing 4 can be tilted in the direction perpendicular to the side surface of the cutting blade 7, the cutting blade 7 can be swung in the direction perpendicular to the rotation axis with respect to the base portion 2, and the cutting blade 7 with respect to the base portion 2 described later. The (housing 4) is configured to be rotatable in the vertical direction. The cutting blade 7 is configured in a disc shape having one side surface and another side surface parallel to each other, and cuts a base portion having a through hole through which a bolt penetrates in the center and a wood W as a workpiece on the outer periphery of the base portion. A blade is provided.

  The base portion 2 includes a base 21 that supports a wood W that is a housing material, a turntable 22 that is supported on the base 21 so as to be rotatable by a rotation shaft (not shown) that extends in a vertical direction, which will be described later, and a base 21. The fence 23 is provided. Further, the upper surfaces of the base 21 and the turntable 22 form a contact surface 25 on which the wood W (FIG. 1) is placed. As shown in FIG. 2, the base 21 includes a pair of a left base 21A and a right base 21B. The direction in which the left base 21 </ b> A and the right base 21 </ b> B are aligned is defined as the left-right direction, and the direction having the contact surface 25 with respect to the base portion 2 is defined as the upper side and the opposite is defined as the lower side.

  As shown in FIGS. 1 and 2, the turntable 22 is arranged between the right base 21B and the left base 21A. The turntable 22 includes a substantially circular turntable main body 22A, a projecting portion 24 projecting from the turntable main body 22A in one direction orthogonal to the axial direction of the rotation shaft (not shown), and the turntable main body 22A. It is comprised by the housing support part 27 which is provided in the other and supports the support part 3 mentioned later. The direction in which the protruding portion 24 protrudes from the turntable main body portion 22A and is orthogonal to the left-right direction is defined as the front and the opposite is defined as the rear.

  A series of grooves (not shown) are formed on the upper surface of the turntable 22 from the vicinity of the housing support 27 to the protrusion 24. This groove (not shown) is located at the same position as the line of intersection when the cutting blade 7 (FIG. 1) swings downward and crosses the turntable 22, and the cutting edge of the cutting blade 7 is received and passed through. is there.

  As shown in FIGS. 1 and 2, the projecting portion 24 is provided with a regulating operation portion 28 that serves as an operating portion when regulating the rotation of the turntable 22 relative to the base 21. The restricting operation portion 28 is supported by the protruding portion 24, and extends forward from the protruding portion 24 and can be gripped by the user. In FIG. 5, the control unit 28B includes a regulating portion 28B having a rear end surface that is movable in the direction of the turntable main body portion 22A and the direction of the anti-turntable main body portion 22A and that can contact and separate from the base 21. When the rear end surface (not shown) of the restricting portion 28B is pressed against the base 21, the turntable 22 is fixed to the base 21, and the turntable 22 is prevented from rotating relative to the base 21.

  As shown in FIG. 1, the housing support portion 27 is disposed at a position opposite to the protruding portion 24 with respect to a rotation shaft (not shown) of the turntable 22 (a position rotated by 180 ° around a rotation shaft (not shown)). . That is, it is arranged on the rear end side of the turntable 22. The housing support part 27 has a tilting shaft part 27A located on an extension line of a groove part (not shown) and a tilting support part 27B standing upright from the rear end part, as shown in FIG. In addition, bolts 27C and 27C are respectively screwed into the upper surface of the turntable 22 on both the left and right sides of the tilt shaft portion 27A. The tilting shaft portion 27A corresponds to the tilting shaft in the present invention.

  As shown in FIGS. 1 and 2, the tilt support portion 27 </ b> B is formed with an arc-shaped long hole 27 b that penetrates in the front-rear direction and extends in the left-right direction. A clamp 31A described later is inserted into the long hole 27b. A stopper pin 29 serving as a positioning member at a right angle is attached to the hole formed in the tilting support portion 27B.

  The bolts 27 </ b> C and 27 </ b> C shown in FIG. 2 can abut on a holder 31 described later, and define the maximum tilt position of the holder 31 in the left-right direction.

  As shown in FIGS. 1 and 2, the fence 23 is provided on the base 21 and above the turntable 22. As shown in FIG. 2, the fence 23 has a left fence 23A and a right fence 23B corresponding to the left base 21A and the right base 21B, and the front surfaces of the left fence 23A and the right fence 23B are flush with each other. It arrange | positions so that it may be located, and the position of the timber W (FIG. 1) is prescribed | regulated.

  As shown in FIGS. 1, 2, and 11, the support portion 3 is mainly configured by a holder 31, a slide support portion 33, a swing support portion 35, and a slide portion 36. The holder 31 is supported on the housing support portion 27 by the tilt shaft portion 27A. A clamp 31A is screwed into the holder 31, and the clamp 31A is inserted into the elongated hole 27b (FIG. 2) of the tilt support portion 27B, and the holder 31 is fixed to the tilt support portion 27B by tightening the clamp 31A. The holder 31 can be tilted in the left-right direction by loosening the clamp 31A. Further, since the clamp 31A is inserted into the long hole 27b, the angle at which the holder 31 can be tilted with respect to the tilting support portion 27B is limited to a range in which the clamp 31A can move within the long hole 27b.

  As shown in FIGS. 1 and 2, the slide support 33 has two guide bars 33A and 33B (FIG. 2). Each of the guide bars 33A and 33B has a substantially identical pipe shape, and as shown in FIG. 1, the guide bars 33A and 33B are parallel to the upper surface of the base portion 2 in parallel in the vertical direction so that the respective axial directions coincide with the front-back direction. , Fixed to the holder 31. Specifically, these guide bars 33A and 33B are fixed to the holder 31 so as not to be detachable by bolts (not shown) screwed to the holder 31, respectively. The guide bars 33A and 33B correspond to the slide pipe in the present invention.

  A connecting member 33C is provided at the front end of the two guide bars 33A and 33B. Two guide bars 33A and 33B are connected to each other by the connecting member 33C. Specifically, two holes extending in the front-rear direction are formed in the connecting member 33C, and the front end portions of the two guide bars 33A and 33B are inserted and fixed in the holes.

  As shown in FIGS. 1 and 2, the slide portion 36 has two through holes extending in parallel in the front-rear direction, and two guide bars 33A and 33B are inserted into the through holes. By sliding the slide portion 36 with respect to the two guide bars 33A and 33B, the swing support portion 35 can be moved back and forth. Further, a knob 36A (FIG. 2) that can be screwed and protruded into the slide portion 36 is screwed into the slide portion 36. Therefore, the slide portion 36 can be fixed to the guide bars 33A and 33B by screwing the knob 36A. As shown in FIG. 2, the swing support portion 35 has a pair of arm portions 35 </ b> B that open upward in the front-rear direction, and moves integrally with the slide portion 36. The shaft 35 </ b> A is passed between the pair of arm portions 35 </ b> B so as to pivotally support the housing 4. In addition, a spring (not shown) is mounted on the swing support portion 35 and applies an urging force to the housing 4 so that the housing 4 moves upward (away from the upper surface of the base portion 2).

  The housing 4 includes a first housing 41, a second housing 45, and a handle 4B that are pivotally supported by the swing support portion 35. As shown in FIG. 3, the first housing 41 includes a gear housing portion 41A, a motor housing portion 41B, and a saw cover 41C. 41 A of gear accommodating parts are supported by the arm part 35B so that rocking is possible, and are equipped with the gear mechanism 42 and the 1st ball bearing 43 inside as FIG. 3 shows. The first ball bearing 43 corresponds to the first bearing in the present invention.

  As shown in FIG. 3, the gear mechanism 42 includes a pulley 42A, a first gear 42B having a smaller diameter than the pulley 42A and rotating integrally with the pulley 42A, and a first gear 42B having a larger diameter than the first gear 42B and meshing with the first gear 42B. The two gears 42C and a spindle 42D (FIG. 9) that rotates coaxially with the second gear 42C are configured. The spindle 42D corresponds to the output shaft in the present invention. A support member 41G is fixed to the first housing 41 with screws 41F, and a bearing 41H is supported on the support member 41G. The pulley 42A is provided so as to rotate coaxially with a rotation shaft 41J that is rotatably supported by a bearing 41H. A bearing 41K that is supported by the first housing 41 and supports the rotating shaft 41J is provided on the opposite side of the bearing 41H with respect to the pulley 42A. The first gear 42B is provided so as to be rotatable integrally with the rotation shaft 41J. The outer ring of the first ball bearing 43 is fixed to the first housing 41. The inner ring is fixed to the spindle 42D. The first ball bearing 43 includes a plurality of balls between the outer ring and the inner ring.

  As shown in FIG. 1, a handle 4B is connected to the gear accommodating portion 41A, and a trigger 4C for controlling rotation on / off of the motor 5 is provided on the handle 4B.

  The saw cover 41 </ b> C is attached to the left side surface of the gear housing portion 41 </ b> A and is configured to cover the upper half of the cutting blade 7. In the saw cover 41C, a saw cover 41E having a shape covering the outer periphery of the lower side of the cutting blade 7 exposed from the saw cover 41C is provided to be rotatable around the rotation axis of the cutting blade 7. As shown in FIG. 1, the saw cover 41E rotates to a position covering the outer periphery of the portion of the cutting blade 7 exposed from the saw cover 41C when the housing 4 is swinging upward. As shown, when the housing 4 is swinging downward, it is rotated by a link mechanism (not shown) and stored in the saw cover 41C, and the lower half of the cutting blade 7 is exposed from the saw cover 41C.

  The motor housing portion 41B has a shape extending leftward from the upper portion of the gear housing portion 41A, and is disposed above the cutting blade 7. The motor 5 is housed inside the motor housing portion 41B. Further, in the motor accommodating portion 41B, as shown in FIG. 11, a sub handle 4D is provided at a position that becomes the uppermost portion in a state where the housing 4 swings downward most.

  As shown in FIG. 3, the motor 5 is disposed in the motor housing portion 41 </ b> B and has an output shaft portion 51 that protrudes toward the right side. A fan 52 and a motor-side pulley 53 are provided on the output shaft portion 51. It is mounted so that it rotates coaxially. The motor-side pulley 53 is disposed at the same position as the pulley 42A in the left-right direction, and a belt 54 is hung between the pulley 42A and the driving force is transmitted to the pulley 42A.

  The rotating shaft 41J receives a driving force by rotating coaxially and integrally with the pulley 42A, and further transmits the driving force to the second gear 42C via the first gear 42B. The second gear 42C that has received the driving force transmits the driving force to the spindle 42D that is coaxially connected. Furthermore, the spindle 42D transmits a driving force to the cutting blade 7 connected to the left end, and rotates the cutting blade 7.

  As shown in FIG. 3, the second housing 45 is attached to the first housing 41 so as to cover the gear mechanism 42. The second housing 45 has a spindle 42D extending in the left-right direction and a second ball bearing 44 that rotatably supports the left shaft of the spindle 42D (FIG. 3). The outer ring of the second ball bearing 44 is fixed to the second housing 45, and the inner ring is fixed to the spindle 42D. The second ball bearing 44 includes a plurality of balls between the outer ring and the inner ring. The left end portion of the spindle 42D protrudes to the left from the left side surface of the gear housing portion 41A, and the cutting blade 7 is attached to the left end portion via a bolt and a flange. The second ball bearing 44 corresponds to the second bearing in the present invention. The right end portion of the spindle 42D is rotatably supported by the first ball bearing 43.

  As shown in FIG. 6, the second housing 45 is attached to the first housing by three screws 6. The three screws 6 are arranged at substantially equal intervals in the circumferential direction around the spindle 42D. FIG. 4 shows an enlarged view of a mounting portion between the second housing 45 and the first housing 41. The three screws 6 are configured to be attached from the left side surface of the second housing 45. That is, the second housing 45 is attached from the surface on the cutting blade 7 side in the direction from the second housing 45 toward the first housing 41. On the other hand, in the modification shown in FIG. 5, the three screws 6 </ b> A are configured to be attached from the right side surface of the first housing 41. That is, it is attached in a direction from the first housing 41 toward the second housing 45.

  Between the second housing 45 and the first housing, there is an interposed member 8 made of an elastic body made of resin such as rubber, and the second housing 45 resists a reaction force due to elastic deformation of the interposed member 8 and is screwed. 6 is attached to the first housing. The screw 6 and the interposed member 8 correspond to the adjusting means of the present invention.

  By adjusting the tightening of the three screws 6, the angle of the cutting blade 7 with respect to the contact surface 25 can be adjusted. Here, by using the adjusting cutting blade 7 </ b> A instead of the cutting blade 7, the angle can be easily adjusted. As shown in FIG. 6, the adjustment cutting blade 7 </ b> A has an adjustment hole, and the position of the hole substantially coincides with the position of the screw 6. As shown in FIG. 7, the tightening of the screw 6 can be adjusted using a tool through this hole. Further, when the head of the screw 6 is located on the side opposite to the cutting blade 7 as shown in FIG. 5, the angle of the cutting blade 7 can be adjusted without using the adjusting cutting blade 7A. Since the three screws 6 are arranged at substantially equal intervals in the circumferential direction around the spindle 42D, the angle adjustment of the cutting blade 7 can be easily performed in each direction.

  FIGS. 8 to 10 show examples of the angle adjustment of the cutting blade 7 in detail. In any of the drawings, the angle of the spindle 42D obtained by the adjustment is highlighted to clearly describe the state of the angle adjustment. By adjusting the tightening of the individual screws 6 and changing the angle of the second housing relative to the first housing, the angle of the axis of the spindle 42D is adjusted. 8 to 10 show a state in which the lower screw 6 is loosened and the upper screw 6 is tightened. In this case, the second housing is inclined upward with respect to the first housing. Therefore, the axis of the spindle 42D is adjusted so that the left end is upward.

  Specifically, as shown in FIGS. 9 and 10, the axis of the inner ring of the second ball bearing 44 has its right end inclined downward and the left end inclined upward, and the axis of the spindle 42D is also inclined accordingly. It is done. As the axis of the spindle 42D is inclined, the axis of the inner ring of the first ball bearing 43 is also inclined in the same direction as the spindle 42D. On the other hand, since the outer ring of the second ball bearing 44 is fixed to the second housing 45, the angle of the axis of the outer ring does not change. Similarly, since the outer ring of the first bearing is fixed to the first housing 41, the angle of the shaft center does not change. As described above, the angle of the spindle 42D can be changed by shifting the angles of the axial centers of the outer ring and the inner ring for each of the first ball bearing 43 and the second ball bearing 44. Further, by using a ball bearing as the bearing, the spindle 42D can be rotatably supported even when the angle between the outer ring and the inner ring is deviated.

  The cutting operation of the tabletop cutting machine 1 will be described. The user can move the housing 4 downward by grasping the handle 4B and pushing it down. At this time, the housing 4 is rotated about the swinging support portion 35, so that the housing 4 moves downward. Thereafter, the user pushes the trigger 4 </ b> C in contact with the wood W, starts the motor 5, and rotates the cutting blade 7. Further, the user slides the swing support portion 35 with respect to the slide support portion 33 (guide bars 33A and 33B) to move the housing 4 rearward, and starts cutting the wood W.

In order to cut the wood W diagonally, both side surfaces of the cutting blade 7 are tilted with respect to the contact surface 25, that is, when the housing 4 is tilted in either of the left and right directions as shown in FIGS. The stopper pin 29 may be completely retracted from the holder 31 and the clamp 31A may be loosened. As a result, the support portion 3 and the housing 4 carried by the support portion 3 can be tilted to the left and right with respect to the base portion 2. The maximum inclination angle of the housing 4 tilted to the left or right is determined by the holder 31 coming into contact with the left or right bolt 27C. Therefore, for example, in order to set the maximum inclination angle to 45 °, the protrusion amount of the bolt 27C may be determined so that the holder 31 is in contact with the holder 31 in a state where the holder 31 is inclined at 45 °.
<Second Embodiment>

  The present invention is not limited to a tabletop cutting machine, and can also be implemented for a portable cutting machine. As a second embodiment, a portable circular saw 100 is shown in FIGS. In the second embodiment, the parts and members corresponding to the parts and members constituting the tabletop cutting machine 1 according to the first embodiment shown in FIGS. 1 to 13 are the same as those in the first embodiment. 100 is added to a drawing reference number, and description is abbreviate | omitted.

In the portable circular saw 100, the lower surface of the base portion 102 is a contact surface 125, and the user performs a processing operation by sliding the contact surface 125 forward while making contact with the wood W. Also in such a portable circular saw 100, it is possible to adjust the angle of the cutting blades 107 and 107A by mounting the cutting blade 107 or the adjusting cutting blade 107A using a plurality of screws 106 and a plurality of interposing members 108. It is. Specifically, the user adjusts the angle of the cutting blade 107 or 107A by adjusting the tightening of the screw 106 through the hole of the adjusting cutting blade 107A (FIGS. 15 and 16). As a modified example, by attaching the screw 106 from the opposite side of the cutting blade 107 as in FIG. 5, the user can adjust the angle without interfering with the cutting blade 107.
<Third Embodiment>

  As a third embodiment, in the present invention, an orthogonal screw 209 as an adjusting means can be installed in a direction orthogonal to the axis of the spindle 42D. In the description of the third embodiment, the parts and members corresponding to the parts and members constituting the tabletop cutting machine 1 according to the first embodiment shown in FIGS. 200 is added to the drawing reference number of FIG.

  As shown in FIGS. 17 and 18, the angle of the cutting blade 7 with respect to the contact surface 25 can be easily adjusted without interfering with the cutting blade 7 by adjusting the direction of the axis of the spindle 42 </ b> D using the orthogonal screw 209. Is possible. The screw 206 is configured such that the head portion of the screw comes into surface contact with the second housing 245 and the screw portion is screwed only to the first housing 241 without being screwed to the second housing 245. . Further, the inner diameter of the hole portion of the second housing 245 for inserting the screw 206 is configured to be larger than the outer diameter of the screw portion 206, so that the second housing 245 is not shown in the figure relative to the first housing 241. 18 is movable in the left-right direction.

In the present embodiment, the number of orthogonal screws 209 is two, but any number can be set in the present invention. For example, the three orthogonal screws 209 can be equally distributed in the circumferential direction so that the angle can be adjusted in any direction. Further, the second housing 245 can be attached to the first housing 241 with only the orthogonal screw 209 so that the angle can be adjusted. In this case, the relative positions of the first housing 241 and the second housing 245 are fixed by the tip surfaces of the plurality of orthogonal screws 209 pressing the second housing 245.
<Fourth embodiment>

As the fourth embodiment, an interposition member 308 having a long hole can also be used. The interposition member 308 has a long hole when viewed from the front (FIG. 19) and has a wedge shape when viewed in cross section (FIG. 20). By moving the interposition member 308 along the long hole, the position of the second housing 45 relative to the gear accommodating portion 41A can be changed, and thereby the angle of the spindle 42D and the cutting blades 7 and 7A can be adjusted. As a modification, the user can adjust the angle without interfering with the cutting blade 7 by attaching the screw 6 from the opposite side of the cutting blade 7 as in FIG.
<Fifth embodiment>

  Although the general-purpose second ball bearing 44 is used in the first embodiment, an eccentric bearing 444 can be used instead. A fifth embodiment using the eccentric bearing 444 is shown in FIGS. In the description of the fifth embodiment, the parts and members corresponding to the parts and members constituting the tabletop cutting machine 1 according to the first embodiment shown in FIGS. 200 is added to the drawing reference number of FIG.

  In the fifth embodiment, a second housing 445 having a long hole extending in the circumferential direction is fixed to the gear accommodating portion 41 </ b> A using a screw 6. The second housing 445 includes an eccentric bearing 444 that supports the spindle 42 </ b> D therein. The shaft center of the eccentric bearing 444 is provided at a position eccentric with respect to the center of the second housing 445. When the adjustment is performed, the user may loosen the tightening of the screw 6 and rotate the second housing 445 along the long hole. At this time, the shaft center of the eccentric bearing 444 moves relative to the first housing 41. Therefore, the direction of the axis of the spindle 42D supported by the eccentric bearing 444 changes, and the angle of the cutting blade 7 or 7A attached to the spindle 42D with respect to the contact surface 25 can be adjusted.

  According to these embodiments, the angle adjustment of the cutting blade can be realized by a simple method of changing the direction of the output shaft, not the direction of the housing or the slide mechanism. Therefore, an angle adjustment mechanism can be realized with a simple configuration. Therefore, the angle adjustment mechanism of the cutting blade can be realized with easy manufacturing and low manufacturing costs. Moreover, since the angle of the bearing of the cutting blade is adjusted by using the interposition member 8, the screw 6, and the orthogonal screw 209 as the angle adjusting means of the cutting blade, the design should be easy to adjust and less likely to cause errors. I can do it.

  In the above embodiment, an elastic body made of resin such as rubber is used as the interposition member 8, but the present invention is not limited to this embodiment. It is also possible to use a metal liner, a helical spring, an air spring, a disc spring, a flat washer, a spring washer, a splice plate, etc. as the intervening member.

  Although the ball bearing is used as the bearing in the above embodiment, the present invention is not limited to this embodiment. It is also possible to use a sliding bearing or the like.

  In the present embodiment, the slide-type or tiltable tabletop cutting machine 1 is used. However, the present invention is not limited to this, and the present invention can also be applied to a cutting machine that does not use or tilt.

  In the present embodiment, the slide support portion 33 is fixed to the holder 31, but not limited to this, the slide support portion 33 may be fixed to the housing 4. In this case, the slide function can be realized by holding the slide support portion 33 in the holder 31 so as to be slidable.

  Further, the present invention is not limited to a tabletop cutting machine or a portable circular saw, but is applied to a power tool such as a brush cutter to adjust a mounting angle of a cutting blade as a rotating body, or applied to a power tool to rotate a rotating body. It is also possible to adjust the angle of the output shaft for mounting the tip tool as.

DESCRIPTION OF SYMBOLS 1 Desk cutting machine 2 Base part 3 Support part 4 Housing 4B Handle 4C Trigger 4D Sub handle 5 Motor 6 Screw 7 Cutting blade 7A Adjustment cutting blade 8 Interposition member 209 Orthogonal screw 2 Base part 25 Contact surface 27A Tilt shaft part 31 Holder 35 Swing support portion 36 Slide portion 41 First housing 42 Gear mechanism 42D Spindle 43 First ball bearing 44 Second ball bearing 45 Second housing

Claims (16)

A motor,
An output shaft that is rotated by rotation of the motor and removably attaches the cutting blade;
A housing for supporting the motor and the output shaft;
A base having a contact surface connected to the housing and capable of contacting a workpiece,
The housing has a first housing and a second housing,
The first housing has a first bearing that supports the output shaft,
The second housing has a second bearing that supports the output shaft,
A cutting machine comprising adjusting means for adjusting the position of the second housing relative to the first housing so that the position of the second bearing relative to the first bearing can be adjusted. The first bearing is a ball bearing having a first inner ring attached to the output shaft, a first outer ring attached to the first housing, and a plurality of balls provided between the first inner ring and the first outer ring. Yes,
The second bearing is a ball bearing having a second inner ring attached to the output shaft, a second outer ring attached to the second housing, and a plurality of balls provided between the second inner ring and the second outer ring. The cutting machine according to claim 1, wherein there is a cutting machine.   2. The adjusting device according to claim 1, further comprising a mounting member that connects the first housing and the second housing and adjusts a positional relationship between the first housing and the second housing. 2. The cutting machine according to 2.   The attachment member is configured to attach the second housing to the first housing, and the position of the second housing relative to the first housing can be adjusted by operating the attachment member. The cutting machine according to claim 3.   5. The mounting member according to claim 3, wherein at least three mounting members are provided, and the position of the second housing relative to the first housing can be adjusted by operating at least one of the mounting members. The cutting machine described.   The cutting machine according to any one of claims 3 to 5, wherein the attachment member includes a screw member extending in an axial direction of the output shaft.   The cutting machine according to any one of claims 3 to 6, wherein the attachment member includes a screw member extending in a direction orthogonal to the output shaft.   The cutting machine according to any one of claims 3 to 7, wherein the adjusting means further includes a deformable interposition member located between the first housing and the second housing.   The cutting machine according to claim 8, wherein the interposition member is an elastic body. The second housing is rotatably provided with respect to the first housing;
The second bearing is installed such that the axis of the second bearing does not coincide with the center of rotation of the second housing;
The position of the second bearing can be adjusted with respect to the first bearing by rotating the second housing with respect to the first housing. The cutting machine described.   The housing has a cutting blade side surface and an anti-cutting blade side surface, and the housing is configured such that the mounting member can be operated from the anti-cutting blade side surface side. The cutting machine according to any one of claims 3 to 9. A support portion provided between the base and the cutting blade and supporting the housing on the base;
The contact surface of the base is located on the cutting blade side;
12. The cutting according to any one of claims 1 to 11, wherein the support portion includes a swing support portion that pivotally supports the housing so as to be spaced apart from and close to the base. Machine.   The support portion includes a holder extending from the base and a slide pipe supported by the holder and extending in parallel with the contact surface, and the housing is provided to be slidable with respect to the slide pipe. The cutting machine according to claim 12.   The support portion includes a holder extending from the base, and a slide pipe that is slidably supported by the holder and extends in parallel with the contact surface, and the housing is fixed to the slide pipe. The cutting machine according to claim 12. The base further has an inclined axis on the contact surface;
15. The tilt axis holds the holder so that the housing can be tilted with respect to the contact surface about the axis of the tilt axis. Cutting machine. The contact surface is located on the opposite side of the housing to the base;
The cutting blade projects opposite the housing relative to the contact surface;
The cutting according to any one of claims 1 to 11, wherein the cutting blade can cut the workpiece by sliding the contact surface of the base on the workpiece. Machine.

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