JPH081434A - Circular saw correction polishing machine - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] The setting position of the grinder and the cutting edge of the saw blade can be easily selected, and the cutting edge of the saw blade and the contour of the circular saw can be easily cut. [Structure] At a front and rear position of a fixed base 1, a grinder capable of adjusting a cutting angle and a front and rear movement and a rotation reference disk 11 are provided to face each other. The rotation reference disk 11 has a lever 17
A rotating body 12 is provided that can rotate left and right within a specified range. A circular saw 24 is provided on the bearing tube 16 which is erected at the eccentric position of the rotating body 12.
Then, the rotation guide board 22 having the same number of engaging portions as the saw blades 25 on the periphery is attached. On the fixed base 1, in a state of being engaged with the locking portion of the rotation guide board 22, the compression saw 21 is braked when the lever 17 is rotated in the reverse direction, so that the circular saw 24 remains in the non-rotation state and becomes a grinder. The saw blade 25 is moved forward to cut the blade edge of the saw blade 25, and the tooth back surface 26 of the circular saw 24 is pressed against the grinder while the tooth back surface of the circular saw 24 is pressed against the grinder when the lever 17 is rotated forward.
Provide a cutting control device that cuts only the length.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is
The blade of a circular saw that has become poor in sharpness can be easily corrected and polished to a blade with good sharpness, and the back of the teeth of the circular saw can also be corrected and polished.
The present invention relates to an improvement of a circular saw correction polishing machine capable of correcting the outer shape of a circular saw into a well-balanced shape.

[0002]

2. Description of the Related Art Conventionally, a sliding base which can be moved forward and backward with respect to a grinder is provided, and the sliding base is provided with a rotating body which can rotate in a prescribed range in the left-right direction around a rotation reference disk as an axis. The eccentric position of the bearing cylinder is equipped with a circular saw having a plurality of saw blades and tooth backs alternately arranged on the peripheral edge, and a rotary guide plate having the same number of engaging portions as the saw blade on the peripheral edge. , And a mounting shaft that is braked by the urging elastic force of the wound compression machine so as not to unintentionally rotate in the left-right direction is mounted on the sliding base.
A stopper device that has a locking claw that is locked to the locking portion of the rotation guide board and a rotation handle that is mounted on the rotation body are regulated so that they can be set at the position where the saw blade hits the grinder, or rotation When the forward movement of the handle is completed, a restricting device for restricting the rotation range of the rotating handle is provided between the engaging portion and the engaging claw so that a space corresponding to the grinding allowance of the saw blade is formed. The handle is provided with a feeding device having a feed claw that engages with the locking portion of the rotation guide board, and the circular saw is rotated by one piece by the reciprocating rotation operation of the rotating handle, and the saw becomes poor in sharpness. A circular saw polishing machine that can correct and polish the back surface of a circular saw tooth that has become unbalanced with the blade's corrective polishing is disclosed before the present application, for example, in Japanese Patent Publication No. 5-32166. Is.

[0003]

By the way, in the conventional circular saw grinding machine of this kind, a feed device for rotating the circular saw to one frame is attached to the rotary handle, or the rotary handle is rotated clockwise. Since the rotary guide plate and the circular saw mounted on the mounting shaft are eccentrically rotated toward the grinder in the non-rotated state when the forward rotation is performed, the entire polishing machine is configured. Becomes complicated and becomes expensive, which causes failure.

In addition, during the work for correcting the cutting edge of the saw blade and for the work for correcting the shape of the tooth back of the circular saw, the circular saw on the sliding base stops the rotation of the grinder by the rotating operation of the rotary screw rod with the handle. In order to move the grinder toward the upper grinder, the grinder may seize and break down, or the grindstone may be extremely worn and must be replaced immediately. In order to be able to slide in the front-rear direction with respect to the grinder along the inclined guide rail of the book, the inclined sliding pieces mounted on the lower portions on both sides of the slide base are fitted to the inclined guide rail. Therefore, there is a problem in that cutting dust generated during the correction polishing work enters between the sliding surfaces of the slant guide rails and the sliding pieces, and makes the front and rear movement of the slide base unsmooth. Was there.

According to the present invention, a grinder capable of adjusting a tilt angle and a movement in a front-rear direction can be provided at a front-back position of a fixed base without using a stopper or a feeder, as well as a sliding base. By simply providing the circular saw, which is eccentrically rotated about the dynamic reference disk, as an axis, the set position of the grinder and the cutting edge of the saw blade can be easily selected, and at the same time, the configuration can be simplified. Perhaps the manufacturing cost can be reduced, even if the circular saw is not strongly advanced toward the grinder, the cutting control device provided on the fixed base operates as a locking guide and the compression machine mounted on the mounting shaft brakes. By the operation, the backward rotation operation of the lever can cut the blade edge of the saw blade with good sharpness, and the forward rotation operation of the lever continuously corrects the outer shape of the circular saw to be a balanced and normal shape. And its object is to provide a circular saw modifications grinding machine capable cutting is.

[0006]

In order to achieve the above-mentioned object, in the circular saw correction / polishing machine of the present invention, the constitution of the first item is such that the cutting angle is adjusted and the cutting angle is adjusted in the front-back direction of the fixed base. A grinder capable of movement adjustment and a rotation reference disk are provided so as to face each other, and the rotation reference disk is capable of rotating left and right within a specified range by a forward / backward rotation operation of a lever around the rotation reference disk. A rotating saw provided with a circular saw having a plurality of saw blades and tooth backs alternately arranged on the peripheral edge and a locking portion having the same number as the saw blades on the peripheral edge of the bearing cylinder which is provided upright at the eccentric position of the meeting conductor. A guide shaft is attached to each of the guide plates, and mounting shafts are braked so as not to be rotated in the left and right directions by the urging elastic force of the wound compression machine. While engaged with the locking part of the While rotating, move the saw blade edge length forward with respect to the grinder to cut the blade edge of the saw blade, and while the lever is moving forward, press the circular saw tooth back surface against the grinder A cutting regulation device is provided for continuously cutting the tooth back surface of the circular saw by rotating the lever forward in the same direction as the direction of forward movement of the lever by the length of the tooth back surface.

According to the second aspect of the present invention, in the cutting control device, the cutting shaft is provided with a support shaft erected on a fixed base, one end of which is attached to the fixed base, and a central portion is wound around the support shaft. The other end is pivotally attached to the upper end of the support shaft, and is constituted by a biasing ammunition attached to a guide body having on one side a standing guide piece that engages with the locking portion of the rotation guide disc. is there.

Further, according to the structure of the third aspect of the present invention, when the forward rotation of the lever is completed, the fixed guide is engaged with the rotation guide plate by elastically pushing back the lever in the direction opposite to the forward rotation direction. The elastic regulating member for holding the engagement between the stopper and the standing guide piece of the guide, and the blade positioning device for defining the backward rotation position of the lever are provided.

[0009]

[Function] The cutting edge of the circular saw and the outer circumference thereof are abraded by the cutting work of grass, stem culms or other agricultural products, and the sharpness of the circular saw is greatly reduced. When it is desired to correct and grind (8 blades) and reuse it, the lever 17 is first moved to the position A ′ in FIG. 4 by the hook 37 of the blade positioning device 34 provided at the one position on the rear side on the fixed base 1. Lock it as it is.

Next, under the above conditions, the mounting shaft 18
The 8-blade circular saw 24 is adjusted so that the saw blade 25 of the circular saw 24 and one of the locking portions 23 provided at eight locations on the outer circumference of the rotary guide plate 22 are aligned with each other, and then tightened with a knob nut 28. To do.

By the way, 8 provided on the rotation guide plate 22
Whether the standing guide piece 32 of the cutting control device 29 is locked to one of the locking parts 23 at a distance L corresponding to the polishing allowance, or between the lever 17 and the blade positioning device 34. Also, an interval L corresponding to the grinding allowance of the saw blade 25 is automatically provided.

Next, referring to FIG. 4, the hook 37 is removed, and the lever 17 is advanced from the position A'to the position A until the standing guide piece 32 of the cutting control device 29 engages with the next engaging portion 23. When the lever 17 is rotated (clockwise in FIG. 4), the lever 17 is received by the elastic restricting body 39, and at the same time, the standing guide piece 32 and the locking portion 23 are securely locked by the elastic action. Is retained.

When the blade position is determined as described above, the grinder 3 provided with the grindstone 5 whose inclination is adjusted to, for example, an inclination angle of 45 degrees, and the grinder 3 provided on the front side of the fixed base 1 is used as a circular saw. After moving toward 24, the outer peripheral tip of the saw blade 25 and the outer peripheral end of the grindstone 5 are adjusted so as to coincide with each other as shown in FIG. 5, and then the grinder 3 is operated.

Next, as shown in FIG. 4, when the lever 17 is rotated backward (clockwise) from the position A toward the position A ″ which is in contact with the blade positioning device 34, the lever 12 is pivoted to the eccentric position. The mounted mounting shaft 18 is eccentrically rotated from the B position to the B'position, and the rotation guide plate 22 and the circular saw 24 mounted on the mounting shaft 18 are also mounted on the mounting shaft 18. By the braking action of 21, the blade is moved forward with respect to the grinder 3 by the length of the cutting edge of the saw blade 25 so as to be in the C'position from the C position and from the D position to the D'position in the non-rotating state.

By the way, the turning guide plate 22 is moved backward from the C position to the C'position by the backward turning operation of the lever 17 toward the grinder 3 by the length of the cutting edge of the saw blade 25. In this state, the upright guiding piece 32 of the cutting control device 29 locked by the locking portion 23 resists the biasing elastic force about the support shaft 30 as a shaft under the sliding contact state with the locking portion 23. Since the rotation guide plate 22 is forcibly rotated in the clockwise direction, the rotation guide plate 22 faces the grinder 3 while being guided by the sliding contact with the standing guide piece 32 toward the counterclockwise direction so as to have a slight arc shape. As a result, the circular saw 24 mounted on the mounting shaft 18 together with the rotation guide plate 22 is moved forward.
The saw blade 25 is cut by the grindstone 5 in an arc shape by the length of the cutting edge.

Next, as shown in FIG. 6, the lever 17
Is rotated forward (counterclockwise) from the A ″ position to the A position, the rotation guide plate 22 is moved from the E position to the E ′ position by the braking action of the compression ammunition machine 21 wound around the mounting shaft 18. Target saw blade 1
The frame is moved forward by the same amount as the forward direction of rotation of the lever, and the mounting shaft 18 is also eccentrically moved from the position B'to the position B.

On the other hand, the circular saw 24 also advances about the mounting shaft 18 in the same direction as the forward rotation direction of the lever 17 so as to reach the F'position of the tip of the saw blade 25 next to the F position with respect to the grinder 3. It is rotated. By the way, since the grinder 3 that has finished cutting the saw blade 25 by the backward rotation operation of the lever 17 is at the blade tip position of the saw blade 25 and is in sliding contact with the tooth back surface 26 of the circular saw 24, the lever 17 is When it is rotated forward from the "" position toward the A position, the grinder 3 moves the circular saw 24
While the circular saw 24 is rotated in the forward rotation direction while being in sliding contact with the tooth back surface 26, the tooth back surface 26 is also corrected and ground to have an accurate shape.

As described above, when the one blade saw blade 25 and the one tooth back surface 26 have been corrected and polished by one rotation operation by the backward rotation and the forward rotation of the lever 17, as described above, Similarly, if the saw blade 25 and the tooth back surface 26 are sequentially rotated backward and forward by the number of times (e.g., eight times in this embodiment), the cutting and polishing of the saw blade 25 and the correction grinding of the tooth back surface 26 can be efficiently continued. You can do it.

[0019]

An embodiment will be described with reference to the drawings.

In FIGS. 1 to 9, reference numeral 1 denotes a fixed base with legs long in the front-rear direction. On the front side of the fixed base 1, a rotary motor 4 is provided on one side and on the other side. Rotary motor 4
A grinder mounting bracket 2 having a grinder 3 rotatably mounted on a grindstone 5 that is rotated at high speed is sandwiched between the grinder 3 and the grinder 3 so that the cutting angle of the grindstone 5 can be freely adjusted. Further, it is sandwiched by the grinder mounting bracket 2 so as to be able to adjust the rotation in the left-right direction.

The grinder mounting bracket 2 is a fixed base 1
In order to adjust the movement in the front-rear direction along the guide rail 6 arranged on one side above, the horizontal base 7 of the grinder mounting bracket 2 is provided with a long hole 8 along the front-rear direction. In addition, one side edge of the horizontal base 7 is tightened by a knob nut 10 screwed into a bolt 9 inserted into the elongated hole 8 from the fixed base 1 side so that one side edge of the horizontal base 7 contacts the side surface of the guide rail 6. It is configured such that the grinder mounting bracket 2 can be moved and adjusted in the front-rear direction by a loosening operation.

On the rear side of the fixed base 1, a turning reference disk 11 having an inverted dish shape is mounted so as to face the grinder 3, and a peripheral brim is faced downward on the turning reference disk 11. The bent disk-shaped rotating body 12 is fitted and connected in a state of being crowned from above.

Arc-shaped elongated holes 13, 13 for allowing the rotating body 12 to rotate in the left-right direction by a predetermined angle about the rotation reference disk 11 are concentrically arranged at symmetrical positions on the upper surface of the rotation reference disk 11. The arc-shaped elongated holes 13 and 13 are formed at the symmetrical positions on the upper surface of the rotating body 12 on the fitted side, and the connection holes 14 and 14 that match the arc-shaped elongated holes 13 and 13 are drilled.
And connecting tools 15, 1 penetrating over the connecting holes 14, 14.
Both are connected by 5.

A bearing cylinder 16 is provided at an eccentric position of the rotating body 12.
Is installed upright and one end of a lever 17 is attached to the rotating body 12. A mounting shaft 18 is rotatably mounted on the bearing tube 16 so that the mounting shaft 18 can freely move. A tightening bolt 19 with a washer 20 is screwed into the lower end of the mounting shaft 18,
A compression ammunition machine 21 wound around the mounting shaft 18 located in the recessed portion of the bearing tube 16 is mounted, and the mounting shaft 18 is strongly braked by its biasing elastic force so as not to unintentionally rotate in the left-right direction.

On the upper side of the mounting shaft 18, there is integrally provided an inverted dish-shaped rotation guide plate 22 having a plurality (8 in this embodiment) of engaging portions 23 evenly provided on the periphery. A circular saw 24 having the same number of saw blades 25 and tooth back surfaces 26 as the engaging portions 23 of the rotary guide board 22 on the upper surface of the rotary guide board 22 can be detachably attached to the upper surface of the rotary guide board 22. The mounting shaft 18 is fitted and mounted on the mounting shaft 18, and the mounting shaft 18 is firmly mounted by a knob nut 28 screwed to the tip end side of the mounting shaft 18 via a sandwiching board 27 fitted into the mounting shaft 18.

Reference numeral 29 denotes a cutting control device disposed on the fixed base 1 in the vicinity of the rotation guide plate 22, and the cutting control device 29 has a support shaft 30 standing on the fixed base 1 and one end thereof. It is attached to the fixed base 1, the central portion is wound around the support shaft 30, the other end is pivotally attached to the upper end of the support shaft 30, and the one end is engaged with the locking portion 23 of the rotation guide board 22. The guide member 31 is integrally provided with a standing guide piece 32 for urging, and the standing guide piece 32 is always provided by the elastic force of the urging machine 33.
One end side of is pressed against the outer peripheral edge of the rotation guide plate 22.

Reference numeral 34 is a blade positioning device for defining the backward rotation position of the lever 17 having the tip end attached to the rotary body 12, and the blade positioning device 34 is the fixed base 1
A hook 37 on which the lever 17 is fitted and locked is pivotally attached to a standing piece 36 of a mounting bracket 35 which is erected on the rear side, and when the lever 17 is locked by the hook 37. , The lever 17 is restricted to the A'position, and the circular saw 2
The saw blade 25 of No. 4 and the locking portion 23 of the rotation guide board 22 can be set so as to coincide with each other.

When the hook 37 is disengaged,
The lever 17 can be rotated clockwise so as to be stopped at the A ″ position where it abuts on the adjusting screw rod 38 screwed into the mounting bracket 35, and the saw blade 25 is provided between the A ′ position and the A ″ position. An interval L corresponding to the polishing allowance is formed.

Therefore, when the lever 17 is set to the A'position, a gap L corresponding to the polishing allowance is also provided between the locking portion 23 of the rotation guide plate 22 and the guide piece 32 of the cutting control device 29. It is formed.

Reference numeral 39 denotes an elastic restricting body for stopping the lever 17 at the position A by rotating the lever 17 forward. The elastic restricting body 39 is on the fixed base 1 in the rotating area of the lever 17. The lever 17 is erected upright, and when the forward rotation of the lever 17 is completed, the lever 17 is resiliently pushed back in the direction opposite to the forward direction (clockwise direction), and the locking portion 23 of the rotary guide board 22 and the guide piece of the guide body 31. 32 so that the engaged state can be surely maintained.

A is a forward rotation end position of the lever 17, A'is a mounting position where the saw blade 25 and the locking portion 23 are aligned with each other, and A "is a backward rotation end position of the lever 17. In addition, C and C'are levers 17 from the A position to A ″.
These are the moving positions of the rotation guide plate 2 when it is rotated backward toward the position, and D and D ′ are movements of the circular saw 24 when the lever 17 is rotated backward from the position A toward the position A ″. And E and E ′ are rotation positions of the rotation guide plate 22 when the lever 17 is forwardly rotated from the A ″ position to the A position, and F and F ′ are This is the rotational position of the circular saw 24 when the lever 17 is rotated forward from the A ″ position toward the A position.

The circular saw correction / polishing machine of the present invention can correct and grind the saw blade and the tooth back surface even with a circular saw other than the 8-flute.

[0033]

Since the present invention is constructed as described above, it has the following effects.

According to the first aspect of the present invention, even if the conventional stopper device and feeding device are omitted, the circular saw and the rotation guide plate can be kept in the non-rotation state by the forward and backward rotation of the lever. The saw blade is moved forward by the length of the cutting edge of the saw blade, or is moved forward by the length of the back of the tooth in the forward rotation direction of the lever to perform the saw blade correction cutting work and the tooth back correction cutting. Work can be performed continuously and efficiently, and a cutting control device that engages with the locking part of the rotation guide board is provided on the fixed base so that it does not rotate when performing the correct cutting of the saw blade. Depending on the condition, the saw blade is guided in an arc shape by the length of the cutting edge and moved forward toward the grinder to cut the saw blade into an arc shape, and it is possible to obtain an arc-shaped saw blade with excellent durability and sharpness. If you can, cut the grinder against the circular saw. Since to allow angle adjustment and movement regulation before and after, it is possible to reduce the Shimete manufacturing costs if significantly simplify the configuration of the entire device, of course,
It enables cutting of the saw blade and cutting of the back of the tooth without strongly advancing the circular saw with respect to the grinder.
It prevents the grinder from seizing or the grindstone from prematurely wearing, and can withstand long-term use.

According to the second aspect of the invention, the saw blade, which has been moved forward in the non-rotated state by the backward rotation operation of the lever with respect to the grinder, is rotated while slidingly contacting the engaging portion. Although it is possible to correct and grind the arcuately guided saw blade into an arcuate blade having a good sharpness by the standing guide piece, the back surface of the circular saw can be corrected and ground by the forward rotation operation of the lever.

According to the third aspect of the present invention, the forward rotation end position and the reverse rotation end position of the lever are accurately regulated by the elastic regulating body and the blade positioning device provided on the fixed base. The saw blade correction grinding work and the tooth back surface correction grinding work can be performed continuously, and the lever is forced back in the backward rotation direction by the elastic action of the elasticity regulator. Permitting that the engagement between the stopper and the standing guide piece can be reliably maintained, the positioning of the saw blade and the engaging portion can be easily performed at the start of the cutting operation.

[Brief description of drawings]

FIG. 1 is a side view of a circular saw correction polishing machine according to the present invention.

2 is a partially cutaway plan view of FIG. 1. FIG.

FIG. 3 is an enlarged front view with a part of a main part cut away.

FIG. 4 is an explanatory view of an operation when the lever is rotated in a backward direction.

FIG. 5 is a partially cutaway enlarged plan view showing a set state of the grinder and the circular saw.

FIG. 6 is an explanatory view of the operation when the lever is rotated forward.

FIG. 7 is a plan view of a rotation reference disk.

FIG. 8 is a plan view of a rotating body.

FIG. 9 is an enlarged plan view of a saw blade with a part cut away.

[Explanation of symbols]

 1 Fixed Stand 3 Grinder 5 Grindstone 11 Rotation Reference Disk 12 Rotating Body 16 Bearing Tube 17 Lever 18 Mounting Axis 21 Compressor 22 Rotating Guide Board 23 Locking Part 24 Circular Saw 25 Saw Blade 26 Teeth Back 29 Cutting Control Device 30 Support shaft 31 Guide body 32 Standing guide piece 33 Energizing ammunition machine 34 Blade positioning device 39 Elasticity regulation body

Claims (3)

[Claims] 1. A grinder capable of adjusting a cutting angle and a movement in the front-rear direction and a rotation reference disk are provided at a front and rear position of a fixed base so as to face each other, and the rotation reference disk has a rotation reference disk. Is provided with a rotating body that can be rotated left and right within a specified range by a forward and backward rotating operation of a lever, and a plurality of saw blades and tooth back surfaces are alternately provided on the peripheral edge of a bearing cylinder that is erected at an eccentric position of the rotating body. A circular saw and a rotating guide board with the same number of locks as the saw blade on the periphery, and brake so as not to rotate in the left-right direction by the urging elastic force of the wound compressed compression machine. The mounting saw is mounted on the fixed base, and the circular saw is not rotated by the compression of the compression ammunition when the lever is moved backward while being engaged with the locking portion of the rotation guide plate on the fixed base. In this state, move the saw blade edge length forward with respect to the grinder to cut the saw blade edge, and , When the lever is rotated forward, the tooth back of the circular saw is pressed against the grinder, and is rotated forward in the same direction as the lever forward rotation direction by the length of the tooth back of the circular saw. A circular saw correction / polishing machine, which is equipped with a cutting control device that continuously cuts. 2. The cutting control device comprises a support shaft erected on a fixed base, one end of which is attached to the fixed base, a central portion of which is wound around the support shaft, and the other end of which is pivotally attached to the upper end of the support shaft. 2. The circular saw according to claim 1, further comprising a biasing ammunition attached to a guide body having a standing guide piece that engages with a locking portion of the rotation guide board on one side. Corrective polishing machine. 3. On the fixed base, at the end of the forward rotation of the lever, the lever is resiliently pushed back in the direction opposite to the forward rotation direction, and the locking portion of the rotation guide board and the standing guide piece of the guide body are provided. 2. The circular saw correction / polishing machine according to claim 1, further comprising an elastic restricting body for holding the engagement of the blade and a blade positioning device for defining a backward rotation position of the lever.