JPH021611B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention enables a circular saw with any number of blades to be easily corrected and polished to a blade that has become sharp due to wear due to use, and has good sharpness. This invention relates to a circular saw correction and polishing machine that can correct and polish the outer periphery of any number of circular saws into a well-balanced shape using the same machine.

Prior Art Conventionally, as shown in FIG. 17, a circular saw a, which has a plurality of cutting edges b whose outer circumferential ends c have an acute angle, are provided around the circumference at equal intervals, is attached to a rotating shaft d. Agricultural work that efficiently cuts planted grass, stem culms, or other agricultural products using the high-speed rotating action of a circular saw is commonly performed and is well known. The outer circumferential end c of the cutting edge b is worn round within a short period of time due to the impact with the object to be cut, clods of earth, stones, etc., and the sharpness is significantly reduced.

Therefore, when the cutting edge b of the circular saw a becomes worn and its sharpness deteriorates as described above, it cannot be used again unless the outer peripheral edge c of the cutting edge b is corrected and polished to have the same acute angle shape as the original shape. Can not.

Therefore, if the cutting edge b of the circular saw a is worn round as described above, use a commercially available correction ruler e as shown in Fig. 18 (Utility Model Registration No. 34576) to correct the worn circular saw a. A circular saw with an acute angle on the outer peripheral edge c' of the cutting edge b' on the surface and a blade length of a specified size.
Draw a new figure a' with a scriber f (see the chain line in Figure 17), then apply the circular saw a to a grinder and polish it according to the drawing, and regenerate the circular saw.
The idea was to obtain a' and use it again.

Therefore, in order to perform the conventional circular saw correction and polishing work, it is necessary to perform the troublesome drawing work of drawing a new accurate circular saw shape using a correction ruler on the worn surface of the circular saw.
Since it is not possible to obtain a re-polished circular saw without manually re-polishing the outer periphery of the worn circular saw according to the drawing, the work efficiency is significantly reduced and it goes without saying that the re-polishing time takes a considerable amount of time. about,
Due to the necessity of drawing work, considerable skill is required, and it is difficult for amateurs to draw the drawings.The drawn circular saw figures are drawn by hand, so they are smaller than necessary compared to worn circular saws. , As a result, the degree of wear and tear on the circular saw increases.

Furthermore, all of the outer circumferential polishing work is done manually by the worker, making it impossible to finish and polish the circular saw's external shape to an accurate shape, resulting in the entire circular saw being unbalanced, and when working in agriculture. Circular saws rattle and make abnormal noises, making it impossible to efficiently achieve stable cutting work.In addition, when grinding the blade, the entire blade is ground at once with a grinder, which causes the blade to deteriorate due to frictional heat. However, there were drawbacks such as extremely poor sharpness.

Therefore, the inventor completely abolished the conventional drawing work and manual peripheral polishing work,
The circular saw can be adjusted to move forward and backward with respect to a stationary grinder, and the blade edge of the circular saw is rotated eccentrically by the back and forth reciprocating operation of the operating handle, and the cutting edge of the circular saw is rotated in one direction one by one. By setting it up like this, the back and forth movement of the circular saw can be used to correct and polish the cutting edge of the circular saw, and the back and forth rotation of the operating handle can be used to correct and polish the outer periphery of the circular saw to a balanced and normal shape. We have developed a circular saw repair and polishing machine that allows anyone to easily and efficiently repair and polish worn circular saws. Showa 59-
No. 102276 (May 21, 1980) and patent application 1982-
This application was filed as No. 177639 (August 27, 1982).

Problems to be Solved by the Invention However, in all of the previously developed circular saw correction and polishing machines, the circular saw rotating body, which is rotated from side to side by the operation handle, is erected on a sliding table. The shaft is mounted on a fixed support shaft, and the mounting shaft to which the rotation guide plate and the circular saw are attached is suspended on the circular saw rotating body so that it can rotate eccentrically with respect to the support shaft. When the rotating body of the circular saw was rotated back and forth in the left and right directions around the support shaft for cutting edge polishing work and outer periphery correction work, the shaft part of the support shaft was damaged several hundred times. Rotation operations cause wear and play in the rotation, making it difficult to accurately rotate the rotary guide plate or circular saw eccentrically with respect to the support shaft, and accurately accomplish blade edge polishing work and outer periphery correction polishing work. Perhaps because the grinding dust generated during the above-mentioned polishing work enters the shaft frame between the support shaft and the circular saw rotating body and the sliding surface between the circular saw rotating body and the sliding table, the shaft Problems such as accelerated wear of the frame portion and uneven rotation of the circular saw rotating body occurred.

Therefore, the present invention is capable of adjusting the movement in the front and rear directions with respect to a polishing device that is pre-positioned at a position that can be changed in two stages to suit circular saws with different numbers of cutting edges, and that can be adjusted by moving the operating handle back and forth once. The blades of the circular saw are set so that they are rotated eccentrically by the rotation operation, and the blades of the circular saw are sequentially fed and rotated in one direction, and the correction and polishing work of circular saw blades with different numbers of cutting edges can be performed by simply moving the circular saw back and forth. The operating handle allows one back and forth reciprocating movement, making it easy to correct and polish the outer periphery of a circular saw with a different number of blades to a well-balanced and normal shape. A mounting shaft equipped with a saw and a rotation guide plate is rotatably set up at an eccentric position, and a rotation plate with a downward facing flange on the periphery is attached to a rotation reference disk provided on a sliding table. The fitting connection is made so that the rotating plate can be rotated left and right by a predetermined rotation angle for one back and forth reciprocating operation by the operation handle along the circumferential wall of the rotation reference disk. Even if the plate is rotated many times using the operating handle, the rotating plate can be rotated along the circumferential wall of the rotating reference disk without rattling due to wear.
This allows the circular saw and rotating guide plate to always trace an accurate eccentric rotation trajectory with respect to the rotating disc, and also prevents cutting dust from entering, allowing for long-term cleaning of the circular saw's blade and its outer periphery. The present invention aims to provide a circular saw correction and polishing machine that can accurately and smoothly perform correction and polishing operations.

Means for Solving the Problems Therefore, the technical problem of the present invention is to accurately prevent a circular saw and a rotary plate with a mounting shaft provided with a rotary guide plate from rotating loosely due to wear. At the same time, it is possible to prevent cutting dust from entering between the rotating parts as much as possible, and to ensure smooth rotation at all times, thereby achieving efficient cutting edge polishing work and outer periphery correction polishing work. be.

In order to solve this technical problem, we specifically designed the structure to include a sliding base on the mounting base that can adjust the sliding length in the front and back direction using a sliding adjustment device, and a mounting position with respect to the sliding base that corresponds to the number of cutting edges. A polishing device that can be changed in two stages to suit different circular saws is installed oppositely, and circular saws with different numbers of cutting edges can be removably attached to the rotating reference disk installed on the sliding table. A rotating plate with a flange, in which a mounting shaft directly connected to a rotating guide plate with a plurality of locking parts on the periphery is rotatably set up at an eccentric position, is rotated in a prescribed direction along the circumferential wall of the rotation reference disk. They are fitted and connected so that they can be rotated in the left and right direction by an angle, and a feed claw is pivotally attached to one side of the rotating plate to engage one of a plurality of locking portions provided on the periphery of the rotation guide plate. This is a circular saw correction and polishing machine characterized by being equipped with an operating handle.

Operation The above technical means operates as follows (see Figures 1 to 16). In other words, the cutting edge and outer periphery of the circular saw were both worn out due to agricultural work of cutting grass, stem culms, or other agricultural products, and the cutting edge and outer periphery of the circular saw became unbalanced. When you want to correct and sharpen a circular saw 21, 21', 21'', 21 such as a single-blade, 3-blade, 2-blade, etc. and use it again, first, the number of blades of the circular saw 21 to be corrected and sharpened is 8. When using a single blade,
After setting the grinder 4 at the position X shown by the solid line in FIG.
is rotated so as to collide with the stop position and stopped at position B, and the rotary plate 11 is erected in a free-standing manner so as to be able to freely rotate.
An 8-blade circular saw 2 is attached to a mounting shaft 18 to which a rotary guide plate 19 having locking portions 20 arranged at equal intervals is directly connected in advance.
1 is attached via the fastening fitting 24 while adjusting so that the cutting edge 22 of the circular saw 21 and the locking part 20 are aligned.

Next, the sliding length of the sliding table 8 was adjusted by the sliding adjustment device 35 so that the base end of the cutting edge 22 of the circular saw 21 attached to the mounting shaft 18 came into contact with the outer peripheral edge of the stationary grinder 4. After that, move the slide table 8 back all the way to the front side again, and then remove the grinder 4.
is rotated at high speed and the sliding table 8 is reciprocated in the front and back direction by the sliding length.The blade edge 22 whose outer peripheral end 22a has been worn into a round shape is regenerated by the grinder 4 so that it becomes an acute angle due to the polishing action. Polished.

When the regrinding work of one blade of the circular saw 21 is completed by the above-mentioned front-rear sliding adjustment operation, move the slide table 8 fully backwards toward you again, counterclockwise to return the operating handle 17 from the B position to the A position. direction.
Then, the rotating plate 11 with the flange 12 on which the mounting shaft 18 is erected is smoothly rotated in the same direction along the peripheral wall 10 of the rotating reference disk 9.

However, when the operating handle 17 starts rotating counterclockwise, the rotation guide plate 19
0 and the stopper 28, a play interval l of a certain length is provided in advance, so that the rotation plate 11 rotates eccentrically in the same counterclockwise direction as the rotating disc 11 within the range of the play interval l. However, once the play distance l range is exceeded, the stopper 28 is attached to the locking portion 20.
is locked, and the rotation of the rotation guide plate 19 in the counterclockwise direction is forcibly prevented, so both the rotation guide plate 19 and the circular saw 21 are rotated until the operation handle 17 is rotated to the A position. The circular saw 2 is rotated eccentrically around the mounting shaft 18 in a direction opposite to the rotating direction of the moving plate 11.
The outer peripheral end 22a of the blade 1 is automatically eccentrically moved so as to match the set position of the grinder 4 (see FIG. 4). Therefore, if the operation handle 17 is rotated clockwise from the A position to the B position under this condition, the rotation plate 11 will be moved from the rotation reference disk 9.
At the same time, the rotation guide plate 19, which is integrally attached to the mounting shaft 18, is rotated by 45 degrees clockwise along the peripheral wall 10 of the feed pawl 25, which is engaged with the locking portion 20 from the beginning. For operation, it is rotated by the same angle clockwise, and the circular saw 21 is eccentrically rotated by one frame around the mounting shaft 18 so that the next cutting edge 22 is at the position of the grinder 4.

Therefore, when the next cutting edge 22 is rotated to the grinder 4 position by one back-and-forth reciprocating operation of the operating handle 17 as described above, the sliding length of the sliding table 8 that was previously adjusted is By reciprocating back and forth by a certain amount, the next cutting edge 22 is also reground by the grinder 4 in the same manner as described above.

Therefore, when the number of blades of the circular saw 21 is 8, by repeating the above-mentioned operation 8 times, it is possible to efficiently regenerate and polish the blade edge of the circular saw 21 with 8 blades.

Furthermore, if the blade edge re-polishing operation as described above is repeated many times, the outer periphery of the circular saw 21 may become deformed and become unbalanced during use, making it impossible to perform accurate cutting operations. Of course, it generates noise. In such a case, use the operating handle 1.
7 is rotated to position A, and then the slide table 8 is moved fully backward toward the front side, and then the slide adjustment device 3
5, the slide table 8 is moved forward to a position where the grinder 4 and the outer circumferential end 22a of the cutting edge of the circular saw 21 coincide with each other, and the operating handle 17 is rotated clockwise from the A position to the B position. .
Then, the rotating plate 11 will align with the peripheral wall 10 of the rotating reference disk 9.
At the same time, the rotation guide plate 19 directly connected to the mounting shaft 18 is also rotated clockwise by the same angle for the rotation operation of the feed pawl 25 that has been engaged with the locking portion 20 from the beginning. , the circular saw 21 is eccentrically rotated by one frame with respect to the rotary plate 11 so that the next cutting edge 22 is at the position of the grinder 4.

Therefore, by one reciprocating rotation operation of the operating handle 17, 1/8 of the outer periphery of the circular saw 21 is rotated while being in sliding contact with the grinder 4, so that the outer periphery of the circular saw 21 is rotated by the rotation of the rotating plate 11. Accurately polished into a circular arc surface with a radius centered on the axis. When the polishing work of the 1/8th outer circumference is completed by the above operation, if the operation handle 17 is rotated counterclockwise from the B position to the A position, the rotation guide plate 19 can be rotated within the range of the play interval l. Moving plate 1
The locking portion 20 is eccentrically rotated in the same counterclockwise direction as the rotation direction of the rotation guide plate 1, and then, when the play interval l range has passed, the locking portion 20 is locked with the stopper 28, and the rotation guide plate 1
9 is forcibly prevented from rotating counterclockwise, and both the rotation guide plate 19 and the circular saw 21 are oriented in the opposite direction to the rotation direction of the operating handle 17.
1, the outer blade end 2 of the circular saw 21
2a is automatically eccentrically moved to match the set position of the grinder 4, and the cutting edge 22 is returned to a state where it can move on to the next outer periphery polishing operation without slidingly contacting the grinder 4.

Therefore, if the operation of rotating the operating handle 17 toward the front is repeated eight times as described above, the outer periphery of the circular saw 21 consisting of eight blades will be polished into an accurate shape, and when used. A regenerated circular saw that does not rotate incorrectly or generate abnormal noise can be obtained.

Also, 4-blade, 3-blade and 2-blade circular saws 21',
When polishing the cutting edge of 21″, 21,
Each circular saw 21', 21'', the cutting edge 22' of 21,
22'', 22 are formed in a tapered shape that is inclined with respect to the center line, so after changing the mounting position of the grinder 4 to the Y position shifted to the right from the state shown in the second figure, the sliding While retracting the moving base 8 all the way to the front, turn the operating handle 1.
7 is returned to position B, attach a four-blade, three-blade, or two-blade circular saw 21, 21, 2 to the mounting shaft 18.
1 is attached so that the locking portion 20 and the cutting edges 22', 22'', 22 are aligned with each other.Then, the sliding adjustment device 35 is used to adjust the circular saws 21', 21'', 21, respectively.
After adjusting the longitudinal sliding length so that the sliding table 8 can move forward until the base end of the blade comes into contact with the outer periphery of the grinder 4, the sliding table 8 is moved back to the front side again to the full extent, and then the grinder is removed. 4 is rotated at high speed and the slide table 8 is reciprocated in the front and back direction by the sliding length, the cutting edges 22', 22'', 22 with rounded outer peripheral ends 22a', 22a'', 22a will have an acute angle shape. It is re-polished by the grinder 4 so that it becomes .

Then, by the above operation, the circular saws 21', 21'', 21
When one blade of the 3-blade circular saw 2 is re-polished,
Except for the case of 1", move the sliding table 8 all the way back to the front side again, and turn the operating handle 17 back and forth from position B twice for 4 arrow blades and 4 times for 2 blades. When the rotation guide plate 19 is moved, the rotation guide plate 19 is rotated clockwise by 2 frames (90 degrees) or 4 frames (180 degrees) by the feed operation of the feed pawl 25, and the circular saws 21' and 21 are rotated by 1/4 or 1/4, respectively. By turning 1/2 turn, the next cutting edge 22', 22 will be rotated to the grinder 4 position, so if the sliding table 8 is reciprocated relative to the grinder 4 by the sliding adjustment length, the next cutting edge will be moved to the next position. The cutting edges 22' and 22 are also reground by the grinder 4.

In the case of the three-blade circular saw 21'', since the number of locking portions 20 provided on the periphery of the rotation guide plate 19 is an even number, the rotation angle of the rotation guide plate 19 for one frame feed is 3.
Since it is not compatible with a single blade, this 3-blade circular saw 21″
In this case, the rotating plate 11 is not rotated, and the cutting edge 22'' of the three blades is set on the mounting shaft 18 so as to contact the outer periphery of the grinder 4 each time, and then the sliding plate 8 is moved back and forth back and forth. The blade edge 22'' is re-polished while moving the blade.

Also, 4-blade, 3-blade and 2-blade circular saws 21',
21'', 21 into an accurate circular shape, return the setting position of the grinder 4 to the X position shown in the second figure, and with the operation handle 17 in the B position, turn the grinder 4 onto the mounting shaft 18. Insert the single-blade, three-blade, and two-blade circular saws 21', 21'', 21, respectively, and use one hand to cut the circular saws 21', 21'', 21, respectively.
By manually rotating the circular saws 21', 21'', and 21 in one direction while applying them to the grinder 4,
The outer periphery 22a', 22a'', 22a of the saw is re-polished to an accurate circular shape, and will not cause unbalanced rotation or noise when the re-polishing is used.In addition, the three-blade circular saw 21 ″, 4-blade circular saw 2
1 has cutting edges 22'', 22 on both the front and back sides, so when polishing the cutting edges 22'', 22, it is only necessary to turn it over and perform the same operation as described above.

Embodiment The present invention will be described with reference to a preferred embodiment shown in the accompanying drawings.

Reference numeral 1 denotes a mounting base with legs that can be installed at any location, and a long mounting hole 3 is provided on the front side of the mounting base 1. The polishing device 2 is installed so as to be movable along the long mounting hole 3 via the mounted mounting device 5. A grinder 4 directly connected to the distal end of the polishing device 2 is configured to rotate at high speed at an angle of 45 degrees with respect to the horizontal plane. When the mounting device 5 is installed in the X position of the long mounting hole 3 via the fastener 6, it can be used not only for the cutting edge polishing work and the outer circumferential polishing work of the 8-blade circular saw 21, but also for the 4-blade and 3-blade circular saws. Also, when the mounting device 5 is changed from the X position of the long mounting hole 3 to the Y position, the outer circumferential polishing work of the two-blade circular saws 21', 21'', and 21 can be easily accomplished. The blade edge polishing work of the single-blade and two-blade circular saws 21', 21'', and 21 can be easily performed.

On the opposite side of the mounting base 1, two left and right inclined guide rails 7, 7 are installed parallel to each other with an interval along the front and back direction with respect to the polishing device 2 set at the X position. In addition, between the two left and right inclined guide rails 7, 7, in order to be able to slide in the front and back direction along the two inclined guide rails 7, 7, there are provided lower portions on both sides of a flat sliding platform 8. A sliding table 8a is bent diagonally outward and downward so as to have a slightly more acute angle than the inclination angle of the inclined guide rails 7, 7.
8a is fitted. A cylindrical rotation reference disk 9 with a peripheral wall 10 erected thereon is attached to a substantially central position on the sliding table 8 via a tensioning device,
The upper part of the rotation reference disk 9 is covered with a rotation plate 11 which is provided with a collar 12 bent downward over the entire circumference so that it can be fitted to the peripheral wall 10 from above. It is fitted. Arc-shaped elongated holes 13, 13 having a length of 45 degrees to 50 degrees are concentrically drilled at symmetrical positions on the upper surface of the rotation reference disk 9, and the upper surface of the rotation plate 11 on the fitting side is symmetrical. Connection holes 14, 14 that match the arcuate elongated holes 13, 13 are bored at the positions, and the arcuate elongated holes 13, 13 and the connection holes 14,
Connectors 15, 15 passing through 14 connect the two so that the rotary plate 11 can freely rotate in the left and right directions within a rotation range of 45 degrees to 50 degrees.

A bearing cylinder 16 is provided upright at the eccentric position of the rotating plate 11, and an operating handle 17 is attached to one side of the rotating plate 11.
By rotating the plate toward the front from the A position to the B position, the entire rotating plate 11 is rotated within a rotation range of 45 degrees to 50 degrees along the peripheral wall 10 of the rotating reference disk 9. A mounting shaft 18 is rotatably mounted on the bearing sleeve 16, and the mounting shaft 18 has an even number of locking portions 2, for example eight, on its circumference.
A rotary guide disk 19 in the form of a saucer-shaped disc in which the blades are equally divided is directly connected to the rotary guide disk 19, and the upper surface of the rotary guide disk 19 has eight cutting edges 22, four cutting edges 22', 3
Circular saws 21, 21', 21'', 21 each having one cutting edge 22'' and two cutting edges 22 are inserted and placed on the mounting shaft 18 in a freely replaceable manner. Landing plate 23 and mounting shaft 18
It is firmly attached by a fastening fitting 24 screwed into the tip of the. In addition, 8-blade circular saws 21 and 4
When attaching the circular saw 21' with a single blade to the mounting shaft 18, the locking portion 20 and the cutting edges 22, 22' are adjusted so that they are aligned with each other. Therefore, according to the above setting conditions, the cutting edges 22, 21, 21' of the circular saws 21, 21'
The grinder 4 is positioned at the outer peripheral ends 22a, 22a' of the grinder 22'. The above-described operation handle 17 has a rotary plate 11 at one end on the distal end side.
The structure includes a square-shaped bending rod 17a fixedly fixed to the bending rod 17a, and on the bending rod 17a, a substantially central portion of the feed pawl 25 is pivotally mounted, and the base end of the feed pawl 25 and the operating handle are attached. 17, and the tip side of the feed pawl 25 is locked to one of the locking parts 20 provided on the periphery of the rotary guide plate 19 by the biasing elasticity of the towing bullet machine 26. urge

Therefore, by rotating the operating handle 17 from the A position to the B position, the rotation guide plate 19 directly connected to the mounting shaft 18 is rotated 45 degrees by the feeding operation of the feed pawl 25 about the mounting shaft 18. At the same time, the rotation guide plate 19 is rotated clockwise over a range of ~50 degrees.
The mounting shaft 18 equipped with this is eccentrically rotated with respect to the rotation plate 11.

A bending support member 27 is provided at the rear position of the sliding table 8.
A substantially central portion of a stopper 28 is pivotally attached to the upper surface of the bending support member 27, and a support member erected on the slide table 8 near one end of the stopper 28 and the bending support member 27 29 and towed aircraft 30
is stretched, and the distal end side of the stopper 28 is brought into pressure contact with the periphery of the rotation guide disk 19 by the pulling elasticity.

The locking portion 20 of the rotation guide plate 19 and the feed pawl 25
and the relative positional relationship with the stopper 28 is the fourth
As shown in the figure, in a state in which the feed pawl 25 is forcibly engaged with one of the locking portions 20 by the biasing elasticity of the towing bomb 26, the stopper 28 is not engaged with the other locking portion 20, and the stopper 28 is not engaged with the other locking portion 20. A play interval l of a certain length is provided between the locking part 20 and the other locking part 20. Therefore, by setting the play distance l as described above, when the operating handle 17 is rotated from the B position to the A position, the rotating plate 11 will move along the peripheral wall 10 of the rotating reference disk 9. While being rotated counterclockwise, the rotation guide plate 19 is eccentrically rotated in the counterclockwise direction in the same direction as the rotation direction of the operating handle 17 together with the rotation plate 11 up to a certain length of play interval l range. , Once the play interval l range is passed, the stopper 28 is locked to the locking part 20 by the biasing elasticity of the towing projectile 30, forcing the rotation guide plate 19 to rotate counterclockwise. Therefore, not only the rotation guide plate 19 but also the 8-blade circular saw 21, the 4-blade circular saw 21', or the 2-blade circular saw 21 mounted on the mounting shaft 18 are operated by the operation handle. Until the restoring rotation by 17 is completed (position B), the operating handle 17 is sequentially eccentrically rotated with respect to the rotation plate 11 while being slightly rotated about the mounting shaft 18 in the opposite direction to the rotation direction of the operating handle 17. , the cutting edges 22, 2 of the circular saws 21, 21', 21
2', 22 outer peripheral parts 22a, 22a', 22a
is automatically eccentrically moved so as to match the outer periphery of the grinder 4.

Note that the above effect can be achieved by reciprocating the operating handle 17 twice in the case of the four-blade circular saw 21', and four times in the case of the two-blade circular saw 21. can.

The rotation range of the operating handle 17 above is from the A position.
In order to stop accurately at the 45 degree B position,
A stop device 31 is provided at the B position. This stopping device can finely adjust the rotational range of the operating handle 17 by moving back and forth a screw rod 33 with a handle, which has a compression bullet 34 wound around the distal end of an overhanging plate 32 whose base end is attached to a sliding table 8. .

Note that the A position requires that the stopper 28 is engaged with the locking portion 20 and that the arcuate elongated hole 1 of the rotation reference disk 9
A stop device is not required in the A position, since the engagement with the connectors 15, 15 inserted in the A position prevents the operating handle 17 from being rotated further counterclockwise.

Therefore, by retracting the handle-attached screw rod 33, the rotation range of the operating handle 17 can be adjusted to a maximum of 50 degrees, and a large margin for cutting the blade edge can be obtained during the blade edge polishing operation. 3
Reference numeral 5 denotes a sliding adjustment device for freely slidingly adjusting the sliding table 8 to a desired length with respect to the polishing device 2 installed at the X position or the Y position of the mounting table 1; The adjusting device 35, as shown in FIG.
A rotary screw rod 37 with a handle is mounted on a pair of front and rear bearing fittings 36, 36 installed at front and rear positions on the mounting base 1, and a rotary screw rod 37 with a handle is mounted between the sliding base 8 and the mounting base 1. Moving piece 38 screwed into 37
Moreover, on the front side of the sliding base 8, there is a stop metal fitting 3 that collides with the moving piece 38.
9 is provided, and the sliding length of the slide table 8 can be finely adjusted by moving the movable piece 38 back and forth along the rotary screw 37 by rotating the rotary screw 37 from side to side.

After the sliding adjustment dimension of the desired length is obtained by the above-mentioned sliding adjustment device 35, the sliding table 8
The moving piece 3 is moved to the stop fitting 39 by pushing and pulling the handle 40 attached to the front side of the slide table 8.
8 can be slid back and forth along the inclined guide rails 7, 7 until it stops colliding with each other.

Also, the grinder 4 and circular saws 21, 21', 2
A gate-shaped support fitting 41 is disposed on the mounting base 1 near the contact portion with 1'' and 21, and one end of a transparent safety cover 42 is slidably attached to the upper horizontal part of the support fitting 41 by a hinge 43. To freely perform a circular saw correction and polishing work by freely attaching a hinge to cover an upper part of a contact part and prevent cutting dust from scattering to a worker during polishing work.

Note that the installation location of polishing device 2 is set to X when using 8 blades.
The reason why we changed the setting to the Y position for 4 blades, 3 blades, and 2 blades is as follows:
The cutting edges 22 of the four-blade, three-blade, and two-blade circular saws 21', 21'', and 21 are provided along a radial line passing through the center of the circular saw 21.
2', 22'', and 22 are all formed in a tapered shape with respect to the center line, so when the polishing device has 4 blades, 3 blades, or 2 blades, compared to when it has 8 blades. This is because unless the installation position of 2 is located at the Y position rather than the X position, the cutting edge cannot be accurately polished by the back and forth reciprocating operation of the sliding table 8.

The mounting position 5 for installing the polishing device 2 at a predetermined location of X position or Y position on the mounting base 1 is the 15th position.
As shown in the figure, the base end piece of a substantially elliptical mounting frame 45 is connected by a rotation shaft 45 to an inverted T-shaped mounting base 44 mounted on the mounting base 1 via a tensioning tool 6. A screw shaft protruding from the mounting base 44 is inserted into an arcuate long hole 47 bored in the base end piece of the mounting frame 45, and a nut 48 is screwed onto the end of the screw shaft.
The mounting frame 45 is rotated by the rotation shaft 46 by loosening the nut 47.
The polishing device 2 can be rotated in the front and rear directions around the axis, and the front and rear inclination angle of the polishing device 2 can be adjusted to a position that is easy to work with.

Furthermore, as shown in Figure 16, one or more metal fittings 49 shorter than the height of the sliding table 8 are installed on the front side of the mounting base 1, and a locking pin 50 is attached to the metal fittings 49. Even if the sliding base 8 is moved toward the front side by inserting and removing it freely, it is locked so that it cannot be removed from the mounting base 1 by the locking operation of the locking pin 50, and the locking pin 50 is attached to the metal fitting. When the sliding table 8 is pulled out from the mounting table 49, the sliding table 8 can be removed from the mounting table 1 with a single touch operation and cleaned.

The rotation reference disk 9 described above does not have to be separate from the sliding table 8, but may be formed by bulging a part of the wall plate of the sliding table 8 so as to be integral with the sliding table 8 by press working.

Effects of the Invention A sliding table 8 on the mounting table 1 whose sliding length in the front and back direction can be adjusted by a sliding adjustment device 35, and a circular saw 2 having a different number of cutting edges at the mounting positions X and Y with respect to the sliding table 8.
1, 21', 21'', 21, because the polishing device 2 which can be changed in two stages is installed oppositely.
When the polishing device 2 is set at the X position, the sliding table 8 is adjusted to move back and forth back and forth with respect to the front and rear polishing device 2, and the rotating plate 11 is rotated by a predetermined angle along the peripheral wall 10 of the rotating reference disk 9. The cutting edges 22 of the 8-blade and 4-blade circular saws 21 and 21' are mounted on a mounting shaft 18 that is rotatably mounted on an eccentric position on the rotary plate 11 by intermittent rotational operation. , 22' can be continuously polished to regenerate sharp cutting edges, and the outer periphery of the circular saws 21, 21' can also be polished to an accurate shape to prevent the circular saws 21, 21' from turning incorrectly during use. It is possible to rotate under normal conditions without rotating or making abnormal noise, and when the polishing device 2 is set at the Y position, it is possible to rotate with a three-blade or two-blade round shape. Even though it is a saw 21, 21'', it is difficult to adjust the back and forth movement of the sliding table 8 and the mounting shaft 1.
By intermittently manually eccentrically rotating the circular saws 21'', 21'' about 8 as an axis, it is possible to easily perform polishing of the cutting edges 22'', 22'' and polishing the outer periphery. Since the rotating plate 11 is rotated along the circumferential wall 10 of the rotating reference disk 9, wear caused by rotation is minimized, and the rotating plate 11 is always rotated accurately, resulting in accurate cutting edge polishing over a long period of time. In addition to ensuring that work and peripheral polishing work can be accomplished,
Since the rotating plate 11 is fitted and connected to the rotating reference disk 9, the cutting dust generated during work will be removed from the rotating plate 11.
This has the effect of preventing the rotating plate 11 from entering between the rotating reference disk 9 and the rotating reference disk 9, smoothing the rotation of the rotating plate 11, and promoting improvement in work efficiency.

[Brief explanation of drawings]

The drawings show an embodiment of the circular saw correction and polishing machine according to the present invention, and FIG. 1 shows the blade edge polishing and outer circumference polishing of an 8-blade circular saw with the polishing device installed at the X position of the mounting base. 2 is the same plan view, 3 is an enlarged vertical sectional view of the main parts, 4 is an explanatory view of the operation, 5 is a plan view of the rotation reference disk, 6 The figure is a plan view of the rotating disc, Figure 7 is an overall plan view of a four-blade circular saw during blade edge polishing work, and Figures 8 to 1 are
Fig. 0 shows a three-blade circular saw, Fig. 8 is a plan view before use, Fig. 9 is a plan view after use, Fig. 10 is a plan view after polishing and correction, and Fig. 11. Figures 1 to 13 show a two-blade circular saw.
Fig. 1 is a plan view before use, Fig. 12 is a plan view after use, Fig. 13 is a plan view after polishing and correction, Fig. 14 is an enlarged longitudinal cross-sectional side view with a partially cutaway part of the sliding adjustment device, and Fig. 15 is a plan view after use. The figure is an enlarged front view of the mounting device, FIG.
FIG. 7 is a plan view showing a state in which a new modified circular saw is drawn using a modified ruler on the surface of the circular saw, and FIG. 18 is a front view of the modified ruler. DESCRIPTION OF SYMBOLS 1... Mounting stand, 4... Grinder, 8... Sliding stand, 9... Rotation reference disk, 10... Its surrounding wall,
11... Rotating plate, 12... Tsuba, 17... Operating handle, 18... Mounting shaft, 19... Rotating guide plate, 2
0...Locking part, 21, 21', 21'', 21...
Circular saws with different numbers of blades, 25... feed jaws.

Claims (1)

[Claims] 1. On the mounting base, there is a sliding base that can adjust the sliding length in the front and back direction using a sliding adjustment device, and the mounting position on the sliding base can be changed over two stages to suit circular saws with different numbers of cutting edges. The rotation reference disk, which is installed opposite to the polishing device and placed on the sliding table mentioned above, is equipped with a rotation guide that allows circular saws with different numbers of cutting edges to be removably attached, and has multiple locking parts on the periphery. A rotating plate with a flange, in which a mounting shaft directly connected to the plate is rotatably set up at an eccentric position, is fitted and connected along the circumferential wall of the rotation reference disk so that it can be rotated left and right by a predetermined rotation angle. Further, the circular saw is characterized in that an operation handle is attached to one side of the rotating plate, and the operation handle has a feed pawl pivotally attached to one of the plurality of locking parts provided on the periphery of the rotating guide plate. Correction polishing machine.