JP2018094675A - Disk blade grinder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk blade grinder not requiring adjustment of an inclination angle of a disk grindstone in the middle of a cutting operation, having good cutting efficiency and easy to handle.SOLUTION: A disk blade grinder includes: a disk blade support means 24 supporting a disk blade 1; a grinder support means 26 supporting a grinder 12; a link mechanism 50 moving the grinder support means in parallel and making the grinder 12 and the disk blade 1 separate from each other or approach to each other; an engagement member 54 rotating the disk blade 1 counterclockwise; a biasing means 80 applying biasing force rotating a cutting surface 8 of the grinder 12 around a rotation axis 53 in a single direction; an inverse rotation means 94 inversely rotating the cutting surface 8 around a rotation axis 53 against the biasing force of the biasing means 80; and an interlocking means 100 interlocking with the rotation at a rotation angle for one blade of the disk blade 1 by the engagement member 54 to change the rotation direction of the cutting surface 8 alternately in one direction or in an inverse direction.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a disk blade grinding device for grinding a disk blade such as a brush cutter or an electric saw.

  2. Description of the Related Art Conventionally, a disk blade grinding device for grinding a disk blade has been used in order to use a disk blade such as a brush cutter many times without discarding it after use. The invention of the disk blade grinding apparatus has been filed by the present inventor (see Patent Document 1). In the disk blade grinding apparatus shown in Patent Document 1, the grinding surface of the grinder disk grindstone fixed to the grinder fixing base is manually brought into close contact with the blade part of the disk blade attached to the disk blade support means. The blade part of the disk blade is ground.

  FIG. 12 shows a disk blade 1 as an example of the disk blade. The disk blade 1 has 32 blade portions 2. Each blade portion 2 is brazed with a chip 3 made of cemented carbide that cuts grass. The tip surface 4 of the blade part 2 including the tip 3 is inclined at an inclination angle θ1 toward the central axis C1 as it goes from one surface 5 to the other surface 6 as shown in FIG. As shown in FIG. 12 (d), as it goes from the other surface 6 to the one surface 5, it is inclined toward the central axis C1 at an inclination angle θ2. The blade portion 2 whose tip surface 4 is inclined at an inclination angle θ1 and the blade portion 2 whose tip surface 4 is inclined at an inclination angle θ2 are alternately arranged in the outer peripheral circular direction of the disk blade 1 16 pieces each. This is because the saw principle is used to cut other bushes and twigs. θ1 or θ2 is about 4 to 10 degrees.

  When the disk blade 1 is ground by a conventional disk blade grinding apparatus, first, the grinder is rotated in the vertical direction, and the inclination angle φ1 of the grinder disk grindstone 7 is the inclination of the grinding surface 8 as shown in FIG. By adjusting the angle (vertical angle) θ1, the sixteen blade portions 2 inclined at the inclination angle θ1 are ground every other one. Next, the grinder is rotated in the vertical direction, and as shown in FIG. 12D, the grinding surface 8 of the grinder's disk grindstone 7 is adjusted to have an inclination angle (vertical angle) θ2, and the inclination angle θ2 Grind every 16 blade portions 2 inclined at. For this reason, in order to grind all the 32 blade portions 2, it is necessary to adjust the inclination angle of the grinding surface during the grinding operation, and the grinding operation is time consuming and the grinding efficiency is poor. In addition, many people who grind and use the disc blades of the brush cutters that cut the grass many times are elderly people who work as mowing by dispatching silver, etc., so handle the disc blade grinding device. Need to be easy.

Japanese Patent Laying-Open No. 2015-128805

  SUMMARY OF THE INVENTION An object of the present invention is to provide a disk blade grinding apparatus that does not require artificial adjustment of the inclination angle of a disk grinding wheel during grinding work, has good grinding efficiency, and is easy to handle.

The disk blade grinding device of the present invention is a disk blade grinding device for contacting the grinding surface of the disk grinding wheel provided in the grinder with the blade part of the disk blade and grinding the blade part,
A base, and a disk blade support means provided on the base, the disk blade being mounted on the base so as to be rotatable in a direction parallel to the outer circumferential direction of the disk blade and parallel to the base. And a grinder support means for mounting the grinder so that the grinding surface is rotatable about a rotation axis parallel to the substrate, and a grinder disk grindstone attached to the grinder support means is attached to the disk blade support means. A parallel movement mechanism for moving the grinder support means in parallel with the base so that the blade portion of the disc blade is brought into close contact with or separated from the blade portion, and a grinder attached to the grinder support means. When the disc grindstone is brought close to the blade portion of the disc blade attached to the disc blade support means, it engages with a part of the disc blade and imparts rotational force to the disc blade. And an urging means for applying an urging force for rotating the grinding surface of the grinder attached to the grinder support means in one direction around the rotation axis. Reverse rotation means for rotating the grinding surface of the grinder against the urging force of the urging means in a direction opposite to the one direction around the rotation shaft, and one of the disk blades by the engaging member. In conjunction with the rotation of the blade rotation angle, the biasing force means rotates the grinding surface of the grinder in one direction around the rotation axis, or the reverse rotation means moves around the rotation axis. And interlocking means for rotating in one direction and in the opposite direction.
The rotation angle for one blade is an angle for rotating the disk blade by one blade. If the number of blade portions of the disk blade is N, it is [360 / N] degrees. For example, in the case of a 32-blade disk blade, the rotation angle for one blade = [360/32] degrees = 11.25 degrees. For example, in the case of a 16-blade disk blade, the rotation angle for one blade = [360/16] degrees = 22.5 degrees.
The disk blade grinding apparatus of the present invention is the disk blade grinding apparatus, wherein the biasing means is an arm member fixed to the grinder and rotating together with the grinder, and a biasing means for applying a biasing force to the arm member. The reverse rotation means includes a pressing portion that presses the arm member to rotate the grinding surface of the grinder in the reverse direction, and the interlocking means is a gear that rotates together with the disk blade. And a follower mechanism that is driven by the rotation of the gear at a certain angle to cause the pressing member to press the arm member to rotate the grinding surface of the grinder in the reverse direction. To do.
Further, the disk blade grinding apparatus of the present invention is the disk blade grinding apparatus, wherein the motion mechanism includes a first rocking bar and a second rocking bar that are rotatably connected to the base and the grinder support means. The base, the first swing bar, the grinder support means, and the second swing bar constitute a four-joint chain, and the four-joint chain is a parallelogram parallel link. It is characterized by being.

  According to the disk blade grinding apparatus of the present invention, the grinding surface of the grinder attached to the grinder support means is tilted by rotating it around the rotation axis in one direction by the biasing means (the tilt angle at this time). Is defined as “one-way inclination angle”), the disk blade is rotated by the rotation angle of one blade by the engaging member, and the grinding surface of the grinder is rotated by the reverse rotation means in conjunction with the rotation of the rotation angle of one blade. Rotate around the rotation axis in the other direction (opposite direction to one direction) and incline (the inclination angle at this time is defined as “inclination angle in the other direction”), and bring the grinding surface into contact with the blade part of the disk blade Grind the blade. Next, the disk blade is further rotated by the rotation angle of one blade by the engaging member, and in conjunction with the rotation of the rotation angle of one blade, the grinding surface of the grinder is rotated again in one direction by the biasing means and tilted. Then, the grinding portion can be ground by bringing the grinding surface into contact with the blade portion of the disk blade.

  For this reason, every time the engaging member rotates the disk blade by one rotation angle, the inclination angle of the grinding surface of the grinder can be alternately changed to the one-direction inclination angle or the other-direction inclination angle. As a result, if the disk blade is rotated by the rotation angle by one blade by the engaging member, the blade portion whose tip surface is inclined in one direction and the blade portion whose tip surface is inclined in the opposite direction are alternately arranged in the outer circumferential direction. It is possible to grind the disk blades arranged in. That is, there is no need to adjust the tilt angle of the disk grinding wheel during the grinding operation. Therefore, the disk blade grinding device of the present invention has good grinding efficiency and is easy to handle.

It is a top view of the disk blade grinding device concerning the invention in this application. It is an enlarged front view of the disk blade grinding apparatus of FIG. FIG. 2 is a partially enlarged plan view of the disk blade grinding device of FIG. 1. It is a top view for demonstrating the action | operation of the disk blade grinding apparatus of FIG. It is an enlarged front view for demonstrating the action | operation of the disk blade grinding device of FIG. It is a top view for demonstrating the action | operation of the disk blade grinding apparatus of FIG. It is an enlarged front view for demonstrating the action | operation of the disk blade grinding device of FIG. It is a figure which shows the other aspect of the disk blade ground with the disk blade grinding apparatus which concerns on this invention, The figure (a) is a partially expanded plan view, The figure (b) is a blade whose front end surface inclines [theta] 1. FIG. 4C is a partially enlarged sectional view showing a blade portion whose tip surface is not inclined, and FIG. 4D is a blade portion whose tip surface is inclined by θ2. It is a partially expanded sectional view. It is a top view which shows the aspect of this invention at the time of grinding the disk blade shown in FIG. 8 with the disk blade grinding apparatus which concerns on this invention. It is a top view which shows other embodiment of the disk blade grinding device which concerns on this invention. It is a top view which shows the use condition in the case of using the disk blade grinding device which concerns on this invention as a conventional disk blade grinding device. It is a figure which shows the conventional disk blade, The figure (a) is a top view, The figure (b) is a partially expanded plan view, The figure (c) shows the blade part which the front end surface inclines [theta] 1. FIG. 4D is a cross-sectional view showing a blade portion whose tip surface is inclined by θ1.

  Next, an embodiment of the present invention will be described in detail based on the drawings. In the drawings, reference numeral 10 denotes a disk blade grinding apparatus of the present invention. As shown in FIGS. 1 and 2, the disk blade grinding apparatus 10 is an apparatus that grinds the grinding surface 8 of the disk grindstone 7 included in the grinder 12 by contacting the blade portion 2 of the disk blade 1. The disk blade grinding apparatus 10 includes a base 22 installed in a horizontal direction in a grinding work field. On the base 22, a disk blade support means 24 for attaching the disk blade 1 and a grinder support means 26 for attaching the grinder 12 are provided. is set up.

(Disc blade support means)
As shown in FIGS. 1 and 2, the disk blade support means 24 includes a frame base 23 fixed on the base 22, a frame 28 fixed to the frame base 23, and a male rotatable relative to the frame 28. And a screw 30. The disk blade support means 24 is engaged with a male screw 30 with a gear 32, the disk blade 1 is overlapped with the gear 32, the disk blade 1 is pressed with a pressing plate 34, and a nut 36 is tightened to tighten the gear 32 and the pressing plate 34. The disc blade 1 is attached in a state where the disc blade 1 is sandwiched. As shown in FIG. 2, a spring 38 is attached to the male screw 30, and a nut 40 is screwed into the male screw 30 while pressing the spring 38. The frictional force between the frame 28 and the gear 32 is adjusted by the tightening depth of the nut 40 to the male screw 30. The male screw 30, the gear 32, the disk blade 1, the pressing plate 34, the nut 36 and the nut 40 are integrally configured to rotate with respect to the frame 28 in a direction parallel to the base 22.

  As shown in FIGS. 1 and 2, the frame 28 is fixed to the long arc hole 46 of the frame base 23 by bolts 42 and nuts 44. By loosening the bolts 42 and nuts 44, the position of the frame 28 with respect to the frame base 23 can be changed along the long arc hole 46, and the positions of the disk blade 1 and the gear 32 with respect to the frame base 23 can be changed. Yes. The long circular arc hole 46 is configured in a shape capable of maintaining the meshing between the gear 32 and a gear 48 described later. The functions of the gear 32 and the gear 48 will be described in detail in the description of the interlocking means 100 described later.

(Grinder support means)
As shown in FIGS. 1 to 3, the grinder support means 26 includes a moving plate 52 that can be moved in parallel to the base 22 by a link mechanism (parallel moving mechanism) 50 described later. Two frames 55 (arranged in the Y-axis direction) each having a rotation shaft 53 parallel to the base 22 are fixed on the moving plate 52. A cover 58 that holds the grinder 12 is attached to the frame 55 via two rotating shafts 53, and the grinder 12 can rotate around the rotating shaft 53. A disc attached to the frame 55 so that the distance in the X-axis direction between the disc blade 1 and the disc grindstone 7 is substantially the same regardless of whether the grinder 12 is rotated clockwise or counterclockwise in FIG. The height of the blade 1 and the height of the rotary shaft 53 are configured to be the same.

(Link mechanism)
As shown in FIGS. 1 and 2, the link mechanism 50 includes a first swing bar 60 and a second swing bar 62 between the base 22 and the moving plate 52 of the grinder support means 26. The first swing bar 60 is rotatably connected (pin coupled) to the base 22 at the rotation pair O1 and is rotatably connected to the moving plate 52 at the rotation pair O2. The first swing bar 60 is continuously provided with a lever 64 that is gripped by hand and swings in the horizontal direction. The second swing bar 62 is provided in parallel with the first swing bar 60, is rotatably connected to the moving plate 52 at the rotation pair O3, and is rotatably connected to the base 22 at the rotation pair O4.

  As shown in FIG. 1, the base 22 constitutes the link L1, the first swing bar 60 constitutes the link L2, the grinder support means 26 (including the moving plate 52) constitutes the link L3, and the second The swing bar 62 constitutes a link L4, and a four-joint chain (limited chain) R is constituted by the four one-degree-of-freedom links L1, L2, L3, and L4.

  As shown in FIGS. 1 and 4, the four-joint chain R is a parallelogram parallel link and has one degree of freedom. For this reason, when the lever 64 continuing to the first swing bar 60 constituting the link L2 is rotated around the rotation pair O1, the links L2 and L4 simultaneously rotate in the same direction at the same speed, and the link (node) L2 And the link L3 connected to L4 moves in the state which maintained the angle with respect to the link L1 which is a fixed node at 0 degree | times. Thereby, the disc grindstone 7 of the grinder 12 attached to the grinder support means 26 constituting the link L3 is brought into close contact with the disc blade 1 while maintaining an angle with respect to the base 22. The four-bar chain R is disposed between the base 22 and the moving plate 52 in consideration of safety so that the operator does not pinch his / her finger.

  As shown in FIG. 1, the longitudinal direction of the grinder 12, the first swing bar 60 and the second swing bar 62 are parallel to the long side 25 of the base 22, and the grinder 12 is farthest from the disk blade 1. The positions of the moving plate 52, the frame 55, the grinder 12, the first swing bar 60, the second swing bar 62, etc. are defined as “original positions”. Further, the longitudinal direction of the first swing bar 60 and the second swing bar 62 is the Y-axis direction, and the direction perpendicular to the Y-axis direction in FIG. 1 is the Z-axis direction, the X-axis direction, and the Y-axis direction. The direction is defined as the Z-axis direction.

(Engagement member)
The engaging member 54 shown in FIGS. 1 and 4 is configured to rotate the disk blade 1 counterclockwise. The engaging member 54 includes a pin 68 to be engaged with the circumferential groove 66 of the disk blade 1, a rotating arm 70 to which the pin 68 is fixed, and a rotating arm 70 that rotatably supports a shaft 72. Rotating arm support fitting 74 fixed to 52, a spring 76 for applying a clockwise urging force around the shaft 72 to the rotating arm 70 in FIGS. 1 and 4, and a rotation to which the urging force is applied by the spring 76. And a stopper 78 for stopping the rotation of the arm 70.

  The engaging member 54 rotates the lever 64 and the swing bar 60 clockwise with respect to the base 22 around the rotation pair O1, and the movable plate 52 of the grinder support means 26 (the swing bar at the rotation pair O2). The pin 68 connected to the moving plate 52 via the rotary arm 70 or the like is moved by moving the disk blade 1 attached to the disk blade support means 24 in a direction approaching the disk blade 1. The circumferential groove 66 is pressed in the counterclockwise direction around the central axis C1, so that the disk blade 1 rotates counterclockwise. Even if the lever 64 and the swing bar 60 are rotated counterclockwise around the rotation pair O1 with respect to the base 22, the frame 28 and the gear 32 (rotate integrally with the disk blade 1). The disk blade 1 is configured not to rotate due to the frictional force.

(Biasing means)
The urging means 80 shown in FIGS. 1 to 3 is configured to apply an urging force that rotates the grinding surface 8 of the grinder 12 attached to the grinder support means 26 in one direction around the rotation shaft 53. . The urging means 80 is an arm member 82 fixed to the cover 58 that holds the grinder 12, and a compression that applies an urging force that causes the arm member 82 to rotate around the rotation shaft 53 in one direction (clockwise in FIG. 2). A coil spring (biasing means) 84. The grinder 12 rotates around the rotation shaft 53 together with the arm member 82. The rotation of the arm member 82 in one direction is restricted by the stopper 86. The arm member 82 stops at the position shown in FIG. 2 due to the biasing force by the spring 84 and the restriction by the stopper 86, and the grinding surface 8 of the grinder 12 is inclined at φ1. A bolt 88 is provided for adjusting the position where the arm member 82 is moved along the elongated hole 91 extending in the X-axis direction and the rotation of the arm member 82 is stopped by the stopper 86. A bolt 90 and a nut 92 for adjusting the position of the arm member 82 with respect to the cover 58 of the grinder 12 are provided. By adjusting the position where rotation of the arm member 82 is stopped by the stopper 86 or the position of the arm member 82 with respect to the cover 58, the arm member 82 is moved around the rotation axis 53 of the grinder 12 when the arm member 82 is brought into contact with the stopper 86. By changing the position, φ1 of the grinding surface 8 of the disc grindstone 7 can be adjusted.

(Reverse rotation means)
The reverse rotation means 94 shown in FIGS. 1 to 3 is configured to rotate the grinding surface 8 of the grinder 12 in the reverse direction around the rotation shaft 53 against the biasing force of the biasing means 80. The reverse rotation means 94 includes a pressing wheel 98 having a plurality of pressing portions 96. A recess 108 is formed between the plurality of pressing portions 96. With the grinder 12 approaching the disk blade 1, the pressing portion 96 presses the arm member 82 in the positive direction of the X axis in FIG. 2, so that the arm member 82 rotates in the reverse direction and the grinding surface 8 rotates in the reverse direction. And is tilted at φ2 (shown in FIG. 5). By adjusting the position of the arm member 82 with respect to the cover 58, the position of the cover 58 and the grinder 12 around the rotation shaft 53 is changed when the pressing portion 96 presses the arm member 82, and the pressing portion 96 moves the arm member 82. It is configured to adjust φ2 when pressed.

(Interlocking means)
The interlocking means 100 shown in FIG. 1 to FIG. 3 interlocks with the rotation of the disk blade 1 by a single blade rotation angle (an angle corresponding to one blade portion 2) by the engaging member 54, and the grinding surface of the grinder 12 The rotational direction of 8 can be alternately changed to one direction or the reverse direction. The interlocking means 100 includes a gear 32 that rotates together with the disk blade 1, a gear 48 that meshes with the gear 32, a gear 102 that meshes with the gear 48, and a gear 104 that meshes with the gear 102 and rotates with the pressing wheel 98. The The gear 48, the gear 102, and the gear 104 are disposed on the interlocking platform 49. A pressing wheel 98 is fitted in the gear 104 in the Z-axis direction, and the gear 104 and the pressing wheel 98 are rotated together by a key groove (not shown). The interlocking means 100 presses or releases the arm member 82 by the pressing portion 96 of the pressing wheel 98 each time the grinder 12 is brought close to the disk blade 1 and the engaging blade 54 rotates the disk blade 1 by a rotation angle. By alternately repeating the above, the rotation direction of the grinding surface 8 of the grinder 12 can be alternately changed to one direction or the opposite direction. The function of the interlocking means 100 will be described in detail in the description of the operation described later.

(Operation of the present invention)
The operation of the disk blade grinding apparatus 10 will be described below. When the number of blade parts 2 of the disk blade 1 is 32, the number of teeth of the gear 32 is 32, the number of teeth of the gears 48, 102 and 104 is 16, and the number of the pressing parts 96 of the pressing wheel 98 is eight. explain. Since the number of teeth of the gear 32 is 32, the rotation angle for one blade is [360/32] degrees = 11.25 degrees.

(Initial setting)
As shown in FIG. 2, the disk blade 1 is superposed on the gear 32, the disk blade 1 is pressed by the pressing plate 34, the nut 36 is tightened, and the disk blade 1 is clamped and fixed by the gear 32 and the pressing plate 34. The disk blade 1 is attached to the disk blade support means 24 of the disk blade grinding apparatus 10. The pin 68 is engaged in the circumferential groove 66, and the pin 68 is pressed against the inner wall of the circumferential groove 66 by the biasing force of the spring 76. As shown in FIG. 1, the pressing wheel 98 is manually rotated so that the concave portion 108 and the arm member 82 are positioned in the positive X-axis direction of the central axis C2 of the pressing wheel 98, and as shown in FIG. The pressing portion 96 of 98 is not in contact with the arm member 82. The one-way inclination angle of the grinding surface 8 at this time is adjusted by adjusting the position where the rotation of the arm member 82 is stopped by the stopper 86 and the position of the arm member 82 with respect to the cover 58. Next, in a state where the pressing wheel 98 is manually rotated so that the pressing portion 96 and the arm member 82 are positioned in the positive X-axis direction of the central axis C2 of the pressing wheel 98, and the grinder 12 is brought close to the disk blade 1. The pressing unit 96 rotates the arm member 82 in the reverse direction by pressing the arm member 82 in the positive X-axis direction in FIG. The other direction inclination angle at this time is adjusted by adjusting the position of the arm member 82 with respect to the cover 58. By repeating the adjustment of the one-way inclination angle and the adjustment of the other-direction inclination angle, the one-direction inclination angle and the other-direction inclination angle are brought closer to a predetermined angle. For example, the one-direction inclination angle and the other-direction inclination angle are adjusted to be the same angle in the reverse direction.

(Grinding of the first blade)
With the disc blade 1 attached to the disc blade support means 24, the disc grindstone 7 of the grinder 12 installed on the grinder support means 26 is driven to rotate. Next, the lever 64 is gripped, and as shown in FIG. 4, the lever 64 and the swinging bar 60 continuing to the lever 64 are rotated in the clockwise direction around the rotation pair O1 and the four-bar chain R The links L2 and L4 rotate, and the link L3 moves parallel to the X-axis negative direction in an acute angle direction while maintaining an angle with respect to the base 22. Thereby, the movable plate 52 constituting the link L3 moves in parallel in an acute angle direction with respect to the X-axis negative direction. The arm member 82 installed on the moving plate 52 moves in parallel in an acute angle direction with respect to the X-axis negative direction. The pin 68 of the engaging member 54 fixed to the moving plate 52 presses the circumferential groove 66 so that the disk blade 1 rotates counterclockwise around the central axis C1 as a rotation axis. When the pin 68 presses the circumferential groove 66, the disk blade 1 is rotated counterclockwise together with the gear 32 by a rotation angle (11.25 degrees) by one blade.

  When the gear 32 having 32 teeth rotates counterclockwise by a rotation angle by one blade, the gear 48 meshing with the gear 32 and having 16 teeth which is half of the gear 32 is 22.50 clockwise. Rotate degrees (2 * 11.25 degrees). When the gear 48 rotates 22.50 degrees clockwise, the gear 102 that meshes with the gear 48 and has the same number of teeth 16 as the gear 48 rotates 22.50 degrees counterclockwise. When the gear 102 rotates 22.50 degrees counterclockwise, the gear 104 that meshes with the gear 102 and has the same number of teeth 16 as the gear 102 rotates 22.50 degrees clockwise around the central axis C2. To do. When the gear 104 is rotated 22.50 degrees clockwise, the pressing wheel 98 is rotated 22.50 degrees clockwise around the central axis C2 together with the gear 104.

  The pressing wheel 98 rotates 22.50 degrees clockwise together with the gear 104, so that the recess 108 and the arm member 82 are positioned in the positive X-axis direction of the central axis C2 of the pressing wheel 98 as shown in FIG. From this state, as shown in FIG. 4, the pressing portion 96 and the arm member 82 are positioned in the positive X-axis direction of the central axis C2. Further, as described above, the arm member 82 moves in parallel with the moving plate 52 in an acute angle direction with respect to the negative X-axis direction and moves closer to the pressing portion 96. For this reason, as shown in FIG. 5, the pressing portion 96 presses the arm member 82 to rotate it counterclockwise around the rotation shaft 53. Since the arm member 82 is fixed to the cover 58 of the grinder 12, the grinder 12 and the cover 58 fixed to the grinder 12 rotate counterclockwise around the rotation shaft 53, and the disc grindstone 7 and the grinding surface provided in the grinder 12. 8 rotates counterclockwise around the rotation axis 53.

  Thereby, as shown in FIG.4 and FIG.5, the grinding surface 8 of the disk grindstone 7 inclines at an other direction inclination angle in the reverse direction with respect to FIGS. In a state where the grinding surface 8 is inclined at the other direction inclination angle, the grinding surface 8 comes into contact with the blade portion 2 of the disk blade 1 and the blade portion 2 is ground at the other direction inclination angle.

(Return to the original position of the moving plate, etc.)
The lever 64 is gripped, the lever 64 and the swing bar 60 continuing to the lever 64 are rotated counterclockwise about the rotation pair O1, the links L2 and L4 of the four-bar chain R are rotated, and the link L3 Moves in an acute angle direction with respect to the positive direction of the X axis while maintaining an angle with respect to the base 22. The disk blade 1 is not rotated by the frictional force between the frame 28 and the gear 32, and the engaging member 54 is separated from the circumferential groove 66 of the disk blade 1. The rotary arm 70 rotates around the shaft 72 and clockwise in FIGS. 1 and 4, and the pin 68 falls into the adjacent circumferential groove 66 when it passes over one blade portion 2 by the biasing force of the spring 76. Engage. Thereby, the moving plate 52 returns to the original position shown in FIG. The arm member 82 is separated from the pressing portion 96 of the pressing wheel 98, and the arm member 82, the grinder 12 and the disc grindstone 7 are returned to the original positions shown in FIG.

(Grinding the second blade)
As in the case of the grinding of the first blade, the lever 64 is gripped, and the lever 64 and the rocking bar 60 continuous with the lever 64 are rotated in the clockwise direction around the rotation pair O1 and moved. The pin 52 of the engaging member 54 fixed to the moving plate 52 is moved counterclockwise around the central axis C1 as the rotation axis. The circumferential groove 66 is pressed so as to rotate. As a result, as in the case of grinding the first blade portion, the disk blade 1 rotates together with the gear 32 counterclockwise by the rotation angle (11.25 degrees) by one blade, and the gear 48 rotates clockwise. The gear wheel 102 is rotated 22.50 degrees counterclockwise, the gear 104 is rotated 22.50 degrees clockwise around the central axis C 2, and the pressing wheel 98 is moved together with the gear 104. It rotates 22.50 degrees clockwise around the central axis C2.

  Since the pressing wheel 98 rotates 22.50 degrees clockwise together with the gear 104, the pressing portion 96 is located in the positive X-axis direction of the central axis C2 of the pressing wheel 98 (shown in FIG. 4). As shown in FIG. 6, the recess 108 is positioned in the positive direction of the X axis with respect to the central axis C2. As a result, the arm member 82 that has moved in parallel with the moving plate 52 in the acute angle direction with respect to the negative X-axis direction enters the recess 108. The pressing portion 96 does not press the arm member 82, and the arm member 82 is regulated by the stopper 86 while receiving the urging force of the spring 84 as shown in FIG. In the initial setting, since the grinding surface 8 of the disc grindstone 7 at this time is adjusted so as to be inclined at an inclination angle in one direction, the grinding surface 8 comes into contact with the blade portion 2 of the disk blade 1 and the blade portion 2 becomes one. Grinding is performed at a direction inclination angle (opposite to the other direction inclination angle).

(Sequential grinding of the third and subsequent blades)
Returning the original position of the moving plate 52 and the like, and repeatedly moving the moving plate 52 in parallel with the X-axis negative direction in an acute angle direction to bring the grinding surface 8 of the disc grinding stone 7 into contact with the blade portion 2 of the disc blade 1. As a result, while the disk blade 1 is rotated by a rotation angle by one blade, the 32 blade portions 2 are sequentially ground at alternate inclination angles of the other direction inclination angle and the one direction inclination angle.

(Effect of the present invention)
The grinding surface 8 of the grinder 12 attached to the grinder support means 26 is rotated in one direction around the rotating shaft 53 by the urging means 80 and is inclined at a one-way inclination angle, and the disk is formed by the engaging member 54. The blade 1 is rotated by the rotation angle of one blade, and the grinding surface 8 of the grinder 12 is rotated in the other direction around the rotation shaft 53 by the reverse rotation means 94 in conjunction with the rotation of the rotation angle of one blade. The disk blade 1 is further rotated by the rotation angle of one blade by the engaging member 54 and the grinding surface of the grinder 12 is urged by the biasing means 80 in conjunction with the rotation of the rotation angle of one blade. It can be sequentially performed to rotate 8 in one direction again and to incline to an inclination angle in one direction.

  For this reason, every time the engaging member 54 rotates the disk blade 1 by one rotation angle, the inclination angle of the grinding surface 8 of the grinder 12 is alternately changed to the one-direction inclination angle or the other-direction inclination angle. Can do. Thereby, if the disk blade 1 is rotated by one rotation angle by the engaging member 54, the blade portion 2 in which the tip surface 4 is inclined in one direction and the blade portion 2 in which the tip surface 4 is inclined in the opposite direction, It is possible to grind the disk blades 1 arranged alternately in the outer circumferential direction. Therefore, the disk blade grinding apparatus 10 of the present invention does not need to adjust the inclination angle of the grinding surface 8 of the disk grinding wheel 7 during the grinding operation, has high grinding efficiency and is easy to handle.

(Second Embodiment)
(Configuration of Second Embodiment)
The present invention has a disc having two blade portions 2 and the blade portions 2 whose tip surfaces are inclined in one direction and the blade portions 2 whose tip surfaces 4 are inclined in the opposite direction are alternately arranged in the outer circumferential direction. It is not limited to grinding the blade 1. For example, the blade portion 112 has 40 blade portions 112 and the tip surface 4 is inclined in one direction as shown in FIG. 8B, and the blade in which the tip surface 4 is not inclined as shown in FIG. 8C. As shown in FIG. 8 (d), the blade 112 shown in FIG. 8 is arranged in the outer circumferential direction in the order of the blade 112 having the tip surface 4 inclined in the reverse direction and the blade 112 having the tip 4 not inclined. 110 may be ground by the disk blade grinding apparatus 10. The rotation angle corresponding to one blade of the disk blade 110 is [360/40] degrees = 9 degrees because the number of teeth of the gear 122 is 40. The configuration of the disk blade grinding apparatus 10 (including the reverse rotation means 94) for grinding the disk blade 110 is the same as that of the disk blade grinding apparatus 10 (including the reverse rotation means 94) shown in FIG.

  Since the disk blade 110 has a larger number of blades than the disk blade 1, the disk grindstone 7 is too close to the disk blade 110 when the frame 28 to which the disk blade 110 is attached is located at the same position as in FIG. The disk blade 110 is shaved too deep when it comes into contact with 110. Therefore, the position of the disk blade 110 is adjusted as follows so as not to cut the disk blade 110 too deeply. As shown in FIGS. 1 and 9, a contact line 106 indicating a position where the disc grindstone 7 and the disc blade 110 are in contact is represented in advance on the base 22. Next, the bolt 42 and the nut 44 are loosened to move the frame 28 along the long arc hole 46, and the X-axis positive direction end portion (the end portion on the grinder 12 side) of the outer periphery of the disk blade 110 attached to the frame 28. Adjust to be on contact line 106.

  Further, as shown in FIG. 9, the pressing wheel 98 shown in FIG. 1 having eight pressing parts 96 is replaced with a pressing wheel 116 having five pressing parts 114. The pressing wheel 116 includes a first intermediate pressing portion 118-1, a pressing portion 114 adjacent to the first intermediate pressing portion 118-1, a second intermediate pressing portion 118-2 adjacent to the pressing portion 114, and a recess 120. Five sets of element groups 121 in which four elements are sequentially arranged at equal intervals around the central axis C2 are arranged around the central axis C2. The pressing part 114 protrudes radially, the intermediate pressing part 118-1 and the intermediate pressing part 118-2 are recessed more than the pressing part 114, and the recessed part 120 is further recessed than the intermediate pressing part 118-1. When the pressing portion 114 presses the arm member 82, the urging means 80 and the reverse rotation means 94, as shown in FIG. 8B, the grinding surface 8 of the disc grindstone 7 is inclined by φ1 degree in one direction, When the pressing portion 118 presses the arm member 82, as shown in FIG. 8C, the grinding surface 8 is not inclined, and when the arm member 82 enters the recess 120, as shown in FIG. The grinding surface 8 is configured to incline in the opposite direction by φ2 degrees.

  The gear 32 having 32 teeth shown in FIG. 1 rotating together with the disk blade 1 is replaced with a gear 122 having 40 teeth (rotating together with the disk blade 110) as shown in FIG. Further, the gear 48 shown in FIG. 1 is replaced with the gear 124 shown in FIG. 9 having 20 teeth, the gear 102 shown in FIG. 1 is changed to the gear 126 having 20 teeth shown in FIG. 9, and the gear 104 shown in FIG. Is replaced with a gear 128 having 20 teeth as shown in FIG. In the disk blade grinding apparatus 10 of the present invention, the disk blade 1 is replaced with the disk blade 110 and positioned at the position shown in FIG. 9, and the press wheel 98 or gear 32 shown in FIG. 1 is replaced with the press wheel 116 and gear 122 etc. Thus, as will be described in detail in the description of the subsequent operation, the lever 64 is gripped and rotated once in the clockwise direction around the rotation pair O1, and the disk blade 110 is rotated by a rotation angle (9 degrees). = 360 degrees ÷ 40 (number of blades 112)) Each time the rotating wheel 116 is rotated, the pitch angle between the elements (the angle around the central axis C2 between one element and the adjacent element) is shown in FIG. In this case, 360 ÷ (4 elements × 5 sets) = 18 degrees)). Accordingly, each time the lever 64 is gripped and rotated once in the clockwise direction around the rotation pair O1, the intermediate pressing portion 118-1 operates to press the arm member 82, and the pressing portion 114 causes the arm member 82 to move. The operation of pressing, the operation of the intermediate pressing portion 118-2 pressing the arm member 82, and the operation of the arm member 82 entering the recess 120 are sequentially executed.

(Operation of Second Embodiment)
In the disk blade grinding apparatus 10 of the present invention, the operation when the wheel is replaced with the pressing wheel 116 will be described below. In the following description, as shown in FIG. 9, the arm member 82 of the urging means 80 enters the recess 120 of the pressing wheel 116, and the recess 108 is positioned in the positive X-axis direction of the central axis C <b> 2 of the pressing wheel 116. The operation from the reference state will be described with reference to the state that is present. When the arm member 82 enters the recess 120, the pressing wheel 116 does not press the arm member 82, and the grinding surface 8 of the disc grindstone 7 is moved by the urging means 80 as shown in FIG. It is inclined φ1 degree with respect to the axial direction (vertical method).

(A) (Grinding of the blade 112 whose tip surface 4 is not inclined (by the intermediate pressing portion 118-1 pressing the arm member 82))
The lever 64 is gripped, the lever 64 and the swinging bar 60 continuing to the lever 64 are rotated in the clockwise direction around the rotation pair O1, the four-bar chain R is operated, and the moving plate 52 is moved along the X axis. Parallel motion in an acute angle direction with respect to the negative direction. The arm member 82 installed on the moving plate 52 moves in parallel in an acute angle direction with respect to the X-axis negative direction. The engaging member 54 fixed to the moving plate 52 rotates the disk blade 110 together with the gear 122 counterclockwise by a rotation angle (9 degrees) by one blade.

  The gear 122 having 40 teeth rotates counterclockwise by a rotation angle by one blade, so that the gear 124 that meshes with the gear 122 and has 20 teeth, which is half of the gear 122, is 18 degrees clockwise ( Rotate 2x9 degrees. When the gear 124 rotates clockwise by 18 degrees, the gear 126 that meshes with the gear 124 and has the same number of teeth 20 as the gear 124 rotates 18 degrees counterclockwise. When the gear 126 rotates 18 degrees counterclockwise, the gear 128 that meshes with the gear 126 and has the same number of teeth 20 as the gear 126 rotates 18 degrees clockwise around the central axis C2. When the gear 128 rotates clockwise by 18 degrees, the pressing wheel 116 rotates together with the gear 128 by 18 degrees clockwise with the central axis C2 as the rotation axis.

  The pressing wheel 116 rotates together with the gear 128 clockwise by 18 degrees (inter-element pitch angle), whereby the depression 108 is positioned in the positive X-axis direction of the central axis C2 of the pressing wheel 116, and the central axis C2 The pressing portion 114 is positioned in the positive X-axis direction. Further, the arm member 82 moves in parallel with the moving plate 52 in an acute angle direction with respect to the negative direction of the X axis and moves in a direction approaching the pressing wheel 116. Therefore, as in FIG. 5, the pressing portion 114 presses the arm member 82 and rotates it around the rotation shaft 53 counterclockwise. Since the arm member 82 is fixed to the cover 58 of the grinder 12, the cover 58 and the grinder 12 rotate counterclockwise around the rotation shaft 53, and the disc grindstone 7 and the grinding surface 8 rotate counterclockwise around the rotation shaft 53. Rotate to.

  Thereby, the grinding surface 8 of the disk grindstone 7 becomes substantially parallel to the Z axis, as shown in FIG. The intermediate pressing portion 118-1 has a shorter distance from the central axis C2 than the pressing portion 114, and when the pressing portion 114 presses the arm member 82 (inclination angle φ2 of the grinding surface 8 (shown in FIG. 8D)). The grinding surface 8 is substantially parallel to the Z axis. In this state, the grinding surface 8 comes into contact with the blade portion 112 whose tip surface 4 is not inclined, and the blade portion 112 is ground in a state substantially parallel to the Z-axis direction.

(B) (Grinding of the blade portion 112 whose tip surface 4 is inclined at θ2 (= φ2) (the state where the pressing portion 114 presses the arm member 82))
Next, the lever 64 is further operated, and the engaging member 54 rotates the disk blade 110 together with the gear 122 counterclockwise by another rotation angle (9 degrees). Gear 124 rotates 18 degrees clockwise (2 × 9 degrees), gear 126 rotates 18 degrees counterclockwise, and gear 128 rotates 18 degrees clockwise. When the gear 128 rotates clockwise by 18 degrees, the pressing wheel 116 rotates together with the gear 128 by 18 degrees clockwise with the central axis C2 as the rotation axis.

  When the pressing wheel 116 rotates 18 degrees clockwise (pitch angle between elements) together with the gear 128, the intermediate pressing portion 118-1 is positioned in the positive X-axis direction of the central axis C2 of the pressing wheel 116. Thus, the pressing portion 114 is positioned in the positive X-axis direction of the central axis C2. Further, as described above, the arm member 82 moves in parallel with the moving plate 52 in an acute angle direction with respect to the negative X-axis direction and moves in a direction approaching the pressing wheel 116, and the pressing portion 114 is moved to the arm member 82. Is pressed and further rotated counterclockwise, and the disc grindstone 7 and the grinding surface 8 further rotate counterclockwise.

  Thereby, the grinding surface 8 of the disk grindstone 7 is inclined at an inclination angle φ2 as shown in FIG. In a state where the grinding surface 8 is inclined at an inclination angle φ2, the grinding surface 8 comes into contact with the blade portion 112 whose tip surface 4 is inclined at θ2, and the tip surface 4 of the blade portion 112 is ground at an inclination angle θ2 (= φ2). The

(C) (Grinding of the blade 112 whose tip surface 4 is not inclined (with the intermediate pressing portion 118-2 pressing the arm member 82))
Next, the lever 64 is further operated, and the engagement member 54 rotates the disk blade 110 together with the gear 122 counterclockwise by another rotation angle (9 degrees), and the gear 124 rotates clockwise. 18 degrees, gear 126 rotates 18 degrees counterclockwise, and gear 128 rotates 18 degrees clockwise. When the gear 128 rotates clockwise by 18 degrees, the pressing wheel 116 rotates together with the gear 128 by 18 degrees clockwise around the central axis C2.

  In the pressing wheel 116, the pressing portion 114 is positioned in the positive X-axis direction of the central axis C2, and the intermediate pressing portion 118-2 is positioned in the positive X-axis direction of the central axis C2. The arm member 82 moves in parallel with the moving plate 52 in an acute angle direction with respect to the negative X-axis direction and moves in a direction approaching the pressing wheel 116, and the intermediate pressing portion 118-2 presses the arm member 82. However, the intermediate pressing portion 118-2 has a shorter distance from the central axis C2 than the pressing portion 114, and the inclination angle due to rotation is smaller than when the pressing portion 114 presses the arm member 82, and the grinding surface 8 Becomes substantially parallel to the Z-axis. In a state where the grinding surface 8 is substantially parallel to the Z-axis direction, the grinding surface 8 contacts the blade portion 112 of the disk blade 110, and the blade portion 112 is ground in a state substantially parallel to the Z-axis direction.

(2) (Grinding of the blade portion 112 in which the front end surface 4 is inclined at an inclination angle θ1 (= φ1) (a state where the arm member 82 enters the recess))
Next, the lever 64 is further operated, and the engagement member 54 rotates the disk blade 110 counterclockwise by a rotation angle (9 degrees) by one blade, and the gear 124 rotates 18 degrees clockwise. The gear 126 rotates 18 degrees counterclockwise, and the gear 128 rotates 18 degrees clockwise. Thus, the pressing wheel 116 rotates 18 degrees clockwise together with the gear 128 with the central axis C2 as the rotation axis.

  In the pressing wheel 116, the arm member 82 enters the concave portion 120 from the state where the intermediate pressing portion 118-2 is positioned in the positive X-axis direction of the central axis C2. As a result, the pressing wheel 116 does not press the arm member 82, and the arm member 82 is rotated clockwise by the biasing means 80. For this reason, the grinding surface 8 of the disc grindstone 7 is inclined at an inclination angle φ1 as shown in FIG. 8 (b). In a state where the grinding surface 8 is inclined at the inclination angle φ1, the grinding surface 8 comes into contact with the blade portion 112 whose tip surface 4 is inclined at the inclination angle θ1, and the blade portion 112 is ground at the inclination angle θ1 (= φ1).

(E) By causing the disk blade grinding apparatus 10 to repeatedly execute the operations (a) to (2) above, the recess 120 enters the arm member 82, and the arm member 82 is moved by the intermediate pressing portion 118-1. The pressing, the pressing of the arm member 82 by the pressing portion 114, and the pressing of the arm member 82 by the second intermediate pressing portion 118-2 are sequentially repeated, grinding of the blade portion 112 whose tip surface 4 is not inclined, and the tip surface 4 is θ2. Grinding of the inclined blade portion 112, grinding of the blade portion 112 where the tip surface 4 is not inclined, grinding of the blade portion 112 where the tip surface 4 is inclined at the inclination angle θ1, and entry of the recess 120 into the arm member 82 are sequentially repeated. . When the disk blade 110 rotates 360 degrees while the blade portion 112 of the disk blade 110 is ground in this way, the grinding of the disk blade 110 is completed.

(Effect of 2nd Embodiment)
As described above, the disk blade grinding apparatus 10 of the present invention replaces the disk blade with the disk blade 110 shown in FIG. 8 and positions it at the position shown in FIG. The operation of the intermediate pressing portion 118-1 pressing the arm member 82, the operation of the pressing portion 114 pressing the arm member 82, the operation of the second intermediate pressing portion 118-2 pressing the arm member 82, and the recess 120. The operation of entering the arm member 82 is sequentially repeated. Thereby, the grinding of the blade part 112 whose tip surface 4 is not inclined, the grinding of the blade part 112 whose tip surface 4 is inclined at θ2, the grinding of the blade part 112 whose tip surface 4 is not inclined, and the tip surface 4 is inclined at an inclination angle θ1. The blade 112 to be ground can be ground sequentially. Thus, the present invention can grind not only the disc blade 1 shown in FIG. 1 but also the disc blade 110 shown in FIG. By further changing the position of the disk blade and replacing the pressing wheel or the like with a pressing wheel other than the pressing wheel 116 or the like, it is possible to grind the disk blades other than the disk blade 1 and the disk blade 110. For this reason, this invention is highly versatile.

(Third embodiment)
(Configuration of Third Embodiment)
Further, in the disk blade grinding apparatus 10 of the present invention, as shown in FIG. 10, the gear 32, the gear 48, the gear 102, and the gear 104 shown in FIG. 1 are removed, and a driving pulley 130 is provided as an alternative to the gear 32. A driven pulley 132 may be provided as an alternative to 104, and rotational movement may be transmitted from the driving pulley 130 to the driven pulley 132 by the belt 134. The diameter of the driven pulley 132 is half of the diameter of the driving pulley 130. When the driving pulley 130 is rotated at a constant angle counterclockwise in FIG. 10, the driven pulley 132 is twice as large as the driving pulley 130 counterclockwise in FIG. It is comprised so that it may rotate with the rotation angle. For example, when the number of teeth of the disk blade 1 is 32 and the driving pulley 130 is rotated by one blade by a rotation angle (360/32 degrees = 11.25 degrees), the driven pulley 132 is 22.5 degrees (2 × 11. Rotate 25 degrees). Regarding the rotation angle, the relationship between the driven pulley 132 and the driving pulley 130 is that the gear 104 rotates in the opposite direction to the gear 32, but the driven pulley 132 rotates in the same direction as the driving pulley 130. It is the same for the relationship. The third embodiment has the same configuration as that of the first embodiment shown in FIG. 1 except that the gear 32 and the like are removed and a driving pulley 130, a driven pulley 132, and a belt 134 are provided.

(Operation and effect of the third embodiment)
In the case of the embodiment shown in FIG. 10, the driven pulley 132 rotates in the opposite direction to the gear 104 shown in FIG. 1, but each time the disk blade 1 is rotated by a rotation angle by one blade, the pressing portion that presses the arm member 82. 96 and the concave portion 108 that does not press the arm member 82 are alternately positioned at the X-axis positive direction end portion (end portion on the grinder 12 side), and the same effect as the first embodiment occurs. That is, every time the disk blade 1 is rotated by a rotation angle by one blade, the inclination angle of the grinding surface 8 of the grinder 12 can be alternately changed to the one-direction inclination angle or the other-direction inclination angle. Thereby, if the disk blade 1 is rotated by one rotation angle by the engaging member 54, the blade portion 2 in which the tip surface 4 is inclined in one direction and the blade portion 2 in which the tip surface 4 is inclined in the opposite direction, It is possible to grind the disk blades 1 arranged alternately in the outer circumferential direction.

  In the disk blade grinding apparatus 10 shown in FIG. 10, a driving chain sprocket is provided as an alternative to the driving pulley 130, a driven chain sprocket is provided as an alternative to the pulley 132, and a driving side chain is used as an alternative to the belt 134. A chain wound around the sprocket for use and the sprocket for the driven side may be provided. Even in this case, the same operations and effects as those of the disk blade grinding apparatus 10 shown in FIG. 10 occur.

(When grinding a disk blade by the same method of use as a conventional disk blade grinding apparatus according to the present invention)
The case where the angle (vertical angle) of the grinder 12 with respect to the Z-axis of the disc grindstone 7 is changed each time the disc blade is rotated by the rotation angle by one blade has been described. However, even if the disc blade is rotated. The disc blade grinding device 10 of the present invention may be used like the conventional disc blade grinding device so as to keep the vertical angle of the disc grindstone 7 constant. In the disc blade grinding apparatus 10 of FIG. 1, when the vertical angle of the disc grindstone 7 is kept constant, at least the pressing wheel 98 is removed from the gear 48, the gear 102, the gear 104, and the pressing wheel 98. By removing at least the pressing wheel 98, the arm member 82 is not pressed by the pressing wheel 98 even when the disk blade is rotated, and the arm member 82 is always brought into contact with the stopper 86, so that the disk grinding wheel 7 The vertical angle is kept constant.

  For example, as shown in FIG. 11, when the gear 48, the gear 102, the gear 104, and the pressing wheel 98 are removed, the interlocking unit 100 including the gear 48 and the reverse rotating unit 94 including the pressing wheel 98 is No longer exists. For this reason, as shown in FIG. 11, the arm member 82 is always brought into contact with the stopper 86, and the vertical angle of the disc grindstone 7 of the grinder 12 to which the stopper 86 is attached is always determined by the position of the stopper 86 and is constant. Maintained. The vertical angle maintained at a constant level can be adjusted by changing the position of the stopper 86 in the X-axis direction with the bolt 88 or changing the position of the arm member 82 with respect to the grinder 12 with the bolt 90 and the nut 92. It is.

  For example, after adjusting the vertical angle of the disc grindstone 7 to φ1 while maintaining φ1, every other blade 2 of the disc blade 1 (tip surface tilt angle θ1 = φ1) is ground, and then the disc grindstone 7 vertical Every other blade portion of the disk blade 1 (the inclination angle of the tip surface is θ2 = φ2) can be ground while adjusting the angle to φ2 and maintaining φ2. Thereby, the disk blade 1 can also be ground by the same method of use as the conventional disk blade grinding apparatus by the disk blade grinding apparatus 1 of the present invention.

(Other embodiment not shown)
As mentioned above, although embodiment of this invention was described based on drawing, this invention is not limited to illustrated embodiment. For example, the disk blade 1 or the disk blade 110 is not limited to grinding, and a disk blade having a size, the number of teeth, and a shape different from those of the disk blade 1 or the disk blade 110 may be ground. Further, the disk blade to be ground by the disk blade grinding apparatus of the present invention is a disk blade in which a blade portion whose tip surface is inclined in one direction and a blade portion whose tip surface is inclined in the opposite direction are alternately arranged in the outer circumferential direction. (Shown in FIG. 12), or a blade portion whose tip surface is inclined in one direction, a blade portion whose tip surface is not inclined, a blade portion whose tip surface is inclined in the reverse direction, and a blade portion whose tip surface is not inclined in this order. It is not limited to the disk blades arranged in a circular direction (the disk blade shown in FIG. 8), the blade portion whose tip surface is inclined in one direction, the blade portion whose tip surface is inclined in the opposite direction, and the blade portion whose tip surface is not inclined. The disc blades arranged in the outer circumferential direction may be used in this order. The parallel movement mechanism is not limited to the parallel link, and may be a reciprocating slide mechanism that linearly moves the grinder fixing member.

1: disc blade 2: blade portion 4: tip surface 7: disc grindstone 8: grinding surface 10: disc blade grinding device 12: grinder 22: base 24: disc blade support means 26: grinder support means 46: long arc hole 50 : Link mechanism 52: Moving plate 53: Rotating shaft 54: Engaging member 66: Circumferential groove 68: Pin 80: Biasing means 82: Arm member 94: Reverse rotation means 96: Pressing part 98: Pressing wheel 100: Interlocking means 110: Disc blade 112: Blade portion 114: Pressing portion 116: Pressing wheel

Claims (3)

It is a disk blade grinding device for contacting a grinding surface of a disk grinding wheel provided in a grinder with a blade part of a disk blade and grinding the blade part,
The base,
A disk blade support means provided on the base, and attached to the disk blade so as to be rotatable in a direction parallel to the outer peripheral circular direction of the disk blade and parallel to the base;
A grinder support means provided on the base and attached to the grinder such that the grinding surface is rotatable about a rotation axis parallel to the substrate;
The grinder support means is attached to the base so that the disc grindstone of the grinder attached to the grinder support means is brought into close contact with or separated from the blade portion of the disc blade attached to the disk blade support means. A parallel movement mechanism for moving in parallel with respect to,
When the disc grindstone of the grinder attached to the grinder support means is brought close to the blade portion of the disc blade attached to the disc blade support means, it engages with a part of the disc blade and An engagement member that rotates the disk blade by applying a rotational force;
A biasing means for applying a biasing force to rotate the grinding surface of the grinder attached to the grinder support means in one direction around the rotation axis;
Reverse rotation means for rotating the grinding surface of the grinder in a direction opposite to the one direction around the rotation axis against the biasing force of the biasing means;
The urging force means rotates the grinding surface of the grinder in one direction around the rotation axis or reversely rotates in conjunction with the rotation angle of the disk blade by the engagement member. Interlocking means for rotating around the rotation axis in a direction opposite to the one direction;
Disk blade grinding machine equipped with The urging means includes an arm member fixed to the grinder and rotating together with the grinder, and an urging means for applying an urging force to the arm member.
The reverse rotation means includes a pressing portion that presses the arm member and rotates the grinding surface of the grinder in the reverse direction.
The interlocking means is
A gear that rotates with the disk blade;
The driven mechanism according to claim 1, further comprising: a driven mechanism configured to rotate the grinding surface of the grinder in the reverse direction by causing the arm member to press the pressing portion following the rotation of the gear at the constant angle. Disc blade grinding device. The motion mechanism includes a first swing bar and a second swing bar rotatably connected to the base and the grinder support means,
The base, the first swing bar, the grinder support means, and the second swing bar form a four-bar chain, and the four-bar chain is a parallelogram parallel link. Item 3. A disk blade grinding apparatus according to item 1 or 2.

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