JPS59224215A - Polishing device for metal working saw - Google Patents

Abstract

PURPOSE:To enable a special set saw tooth to be polished by making a rocking plate, which swings around its fulcrum that is a contact point between an abrasive wheel and the saw tooth, to support the elevating mechanism of the abrasive wheel and alternately converting the movement of this rocking plate in a state inclined to right and left and in a horizontal state, following saw feed. CONSTITUTION:A band saw 7 is held on the front surface of a device body 6 by means of a saw receiver 5, and a feed pin 2' of a feed member 2 is engaged with one of blades of said band saw in proper timing with the rocking state of the abrasive wheel 16. When a main shaft is turned by means of a reduction motor in this state, the cam 9 of a reciprocating mechanism A forces a lever 3 to turn clockwise and the saw tooth to be sent out by one pitch via a saw feed member 2 fixed on a metal segment 4 by a pin. Further, the cam 17 of an elevating mechanism B forces a bell crank 19 to be turned clockwise to permit an elevating plate 12 to be pulled down via an interlocking lever 21 causing the abrasive wheel 16 to cut into the saw tooth, e.g., swung in the left direction. Further, the cam of the rocking mechanism forces at this time the bell crank to be turned anticlockwise to permit the upper part of the rocking plate 22 to be pushed via the interlocking lever, allowing the abrasive wheel 16 to be inclined in the left direction.

Description

[Detailed description of the invention] This article relates to a plane polishing device.

This is because the saw lU was originally used to cut metal, and as shown in Figure 1 of the drawing, it is a special type of saw with left-handed teeth a, right-handed teeth b, and straight teeth C alternately provided.

Currently, there is no equipment to sharpen the saw 1, so the saw 1 is discarded once its teeth are no longer sharp.

The present invention was made in response to this current situation.

By supporting the lifting mechanism of the grinding wheel on a rocking plate that swings around the contact point between the grinding wheel and the sawtooth, and by converting the rocking plate to left tilt, right tilt, and horizontal as the saw feeds, By switching the cutting into the serrations of the grinding wheel into left-handed, right-handed, and horizontal directions, it is possible to grind serrations with a special setting in which straight teeth are added to left-handed and right-handed teeth. It is an object of the present invention to provide a polishing device for a metal saw that eliminates the above-mentioned conventional drawbacks.

Next, an example of the implementation of the device related to non-invention will be explained with reference to the drawings.

Drawing $2 - 'fJSll- In the drawing, 2 is a saw feed member driven by a saw blade, and a piece 4 attached to the upper end of the lever 3.
Hepia 1 is configured so that the feed pin 2'' at the tip engages with each of the left-handed, right-handed, and straight saw teeth a, b, and c of a band saw 7 supported on the front of the machine body 6 by a support 5. A is a reciprocating mechanism that gives reciprocating motion to the saw feed member 2 described above, in which a cam 9 fixed to the main shaft 8 is engaged with a roller attached to the lever 3, and the large diameter portion of the cam 9 Coro] 0
When engaging with the roller 10, the lever 3 is rotated clockwise to advance the feeding member 2, and the small diameter portion engages with the roller 10.

The action of rotating the lever 3 to the left by the force of the spring 11 and retracting the feeding member 2 is repeated alternately.

Saw feeding by the feeding member 2 is performed regularly.

Reference numeral 12 denotes an elevating plate that engages with a guide 13 erected on a rocking table, which will be described later, and a motor 14 is attached to the negative side.
A grinding wheel 6 for grinding the saw teeth a, b, and c of the band saw 7 described above is attached to the shaft 15 of 4.

B is the 7-lowering mechanism for the lifting plate 12 described above, and the main shaft 8 is
A cam 17 fixed to the cam 17, a bell crank 19 with a passive roller 18 engaged with the cam 17, and a passive piece protruding from the tip of the bell crank 9 and the rear side of the elevating plate 12 are connected. When the large diameter part of the cam 7 engages with the roller 18, the lifting plate 12 is pushed up, and when the small diameter part of the cam 7 engages with the roller 18, the lifting plate 12 is lowered, thereby raising the grindstone. Every time the wheel 16 is finished being fed by the feeding member 2?
1: The serrations a, b, and c of the shape are made to cut, and when the polishing is finished, they are released upward. ρ is a rocking plate to which the above-mentioned elevating plate 12 is attached, and its base is connected to a grinding wheel 16 and three types of saw teeth a,
It is pivoted to a pivot whose center coincides with the base line X drawn parallel to the axis of the grinding wheel 16 from the contact points with b and c, and the upper end is connected to a swinging mechanism to be described later, so that it can be freely moved left and right. It looks like it's being swayed. C is the rocking mechanism of the rocking plate B described above;
The other end of the connecting rod U, whose one end is connected to the upper part of the swinging plate ρ, is connected to the tip of the bell crank 5, and the rollers provided at the base end of the bell crank 5 are connected to the main shafts 8 and 3 as described above. Reduction gear η
, is engaged with a cam joint having a thread interior A, a four-part opening, and a convex part C, which are fixed to a vertical shaft 4 connected via a path, and when the concave opening of the cam joint engages with the roller shoulder, the rocking plate n is tilted to the left, and when the two convex portions C are secured to the roller plate, the rocking plate ρ is tilted to the right.

When the inner part A engages with the roller frost, the movement of holding the rocking plate n horizontally is performed in synchronization with the lifting and lowering of the lifting plate 12 by the elevator MB. Reference numeral 31 denotes a feeding mechanism such as a screw that adjusts the height of the mowing plate 12 on the guide 13. As the grinding wheel 16 wears out, the feeding mechanism 31 is operated to lower the lifting plate 12 and remove the grinding wheel]6. The outer periphery is made to coincide with the center of rotation of the rocking plate ρ, regardless of the change in the diameter of the rocking plate ρ.

In FIG. 3, D is a rocking correction mechanism for the rocking plate η provided in the middle of the vertical shaft 4, and the input bevel gear 32 and the output bevel gear 32 having the same number of teeth are connected to a relay bevel gear having the same number of teeth. :y, gs
Using a differential gear connected to the TC, the output bevel gear is connected to a motor section that rotates at three times the speed of the vertical shaft, and when the rotation of this motor is selected by the selection switch S1, the half rotation 1 selection switch S2 is selected. When selected/rotated, in either case, the limit switch is used to reduce the rotation, so that the grinding wheel 16 rises and falls, causing the swing plate 22 to swing by this amount.

The band saw 7 was joined incorrectly, and the saw teeth were swinging to the left (a) and swinging to the right (1).
When they are not lined up in the order of straight C, but are arranged individually such as left swing a, then straight C, or left swing a, left swing a-1 right swing b, right swing, or straight cK 100. , the swinging state of the swinging plate n is corrected to match one individual arrangement, and this mechanism ensures that the saw teeth of the band saw 7 are a, 1+, c, a,
This is all that is needed when joining them in the order of b and c.

The oil is the reducer motor that drives each mechanism A, B, C, and D.
It is transmitted to the main shaft 8 by a belt and chino 39,
Each mechanism A, B, C, and D is operated in synchronization.

In the device configured as described above, the band saw 7 is held on the front side of the machine body 5 by the side support 4, and seven of its saw teeth a, b, and c are fed in accordance with the swinging state of the grinding wheel 16. Part 2
When the feed pin 2' is engaged and the reducer motor blade is operated, the main shaft 8 is driven, and the reciprocating mechanism A, the lifting mechanism B, the swinging mechanism C, and the swinging order and changing machine rotate in synchronization. do. Therefore, first, the cam 9 in the reciprocating mechanism A rotates the lever 3, which is engaged with the roller O with its large diameter part, to the right in FIG. It is moved forward to send out the sawtooth/pitch, and when the feeding is finished, the point of contact with the roller 10 is moved to the small diameter side, and the feeding member 2 is moved backward by the counterclockwise rotation of the lever 3 by the force of the spring 11, and as a result, the elevator 1% Since the cam 17 of B engages its small diameter portion with the roller 18, the bell crank 19 rotates clockwise in FIG. The depth of cut can be made on the sawtooth a. At this time, since the roller 26 is held in the recessed part of the cam companion in the swing mechanism C, the bell crank rotates to the left in FIG. 3 and pushes the upper part of the swing plate ρ by the connecting rod. The rocking plate ρ is tilted to the left as shown in Figure Ifl'I, g.
Move the whetstone $16 supported by vertical line YVcg to the left I
tilt only. For this reason, the grinding wheel 16 cuts into both eyes of the saw tooth C, and the feeding member 2 operates to feed the saw, so that the left-wing saw tooth a has its tooth back as shown in Figures g and 7 of the drawing. Polished to the left. When the grinding wheel 16, which has finished polishing the sawtooth a, is raised by the elevating mechanism B and moves away from the sawtooth a, the feeder member 2, which has advanced six steps, moves to a backward stroke.

When both eyes of the sawtooth a are aligned with the grinding wheel 16, the grinding wheel 16, which has risen once, descends and cuts into both eyes of the sawtooth a, but at this time, the opening of the concave part of the cam in the swinging mechanism C is rotated. 26 is engaged, the bell crank 5 is rotated clockwise, and the upper part of the rocking plate η is pushed to the limit by continuous effort, so that the rocking plate η is tilted to the right as shown in Figure 1 of the drawing. , a grinding wheel 16 supported by a rocking plate η
is tilted to the right by 60 degrees with respect to the vertical line Y, the grinding wheel 16 cuts into both eyes of the saw tooth a, and the saw feed member 2 operates to feed the saw, so the saw tooth b1 swinging to the right is As shown in Figure 1O and Figure 1/ of the drawings, when the grinding wheel 16 which has been polished with its back tilted to the right and has completed the primary polishing is lifted by the lifting mechanism B and away from the saw blade 1), the grinding wheel 16 is moved in the forward direction. Part 2
moves to the backward stroke, and when both eyes of the sawtooth C of W are aligned with the grinding wheel 16, the once raised grinding wheel 16 is lowered and cuts into both eyes, and the reference internal eye of the cam polish in the swing mechanism C is The bell crank 5 is rotated counterclockwise to move the upper part of the rocking plate ρ to the intermediate position.

The rocking plate n stands upright as shown in Figure 7.2 of the drawing, and the rocking plate n
The grinding wheel 16 supported by the grinding wheel 16 aligns with the vertical line Y, cuts into both eyes of the saw tooth C, and the saw feed member 2 operates to feed the saw, horizontally grinding both sides of the straight saw tooth C. Therefore, if the above operation is repeated, three types of sawteeth a, b, c
The grinding wheel 16 tilts to the left and to the right every time the pitch is fed.

Horizontally held by rotating traps, King's sawtooth a, b.

Make sure to polish C according to the set roughness.

Sharpness f! : Since it recovers, the obi @7, which has been disposable up until now, can be used repeatedly by polishing it each time the teeth can no longer be cut.

In addition, during this polishing, if the arrangement of the saw teeth a, b, and c at the joint part 4o of the band saw 7 is performed regularly as shown in the drawing sheet/l1, the polishing will complete one cycle, and the polished saw teeth n,
Even when the grinding wheel 16 grinds b and c again, the way the grinding wheel 16 hits the saw teeth a, b, c (Ci) remains constant, so the saw teeth a, b, c lose their shape. Never.

However, as shown in Figure 1S and Figure 1O of the drawing, the band saw 7
If they are joined unevenly, such as a left-handed sawtooth a followed by a straight sawtooth C, or a left-handed sawtooth a followed by a left-handed sawtooth a, When the grinding wheel 16 is ready to grind the polished saw teeth a, b, and c again after the polishing cycle, the way the saw teeth a, b, and c are raked does not match the inclination of the grinding wheel 16. , the sawtooth that was sharpened in the seventh polishing will lose its shape in the second polishing, so in this case, the cam nod in the swinging mechanism C is attached to the vertical shaft 4, as shown in Figure 3 of the drawing. A correction mechanism for the oscillation of the differential gear set is installed in the holder, and when the above-mentioned individual joint portion reaches the position of the grinding wheel 16, this portion is detected by a known sensor and the correction mechanism is activated. When activated, the grinding wheel 16 rises and rotates downward, correcting the swinging position to a position that is 1/1 pitch or more ahead of the original swinging position, adapting to the uneven arrangement of the sawtooth, It is possible to eliminate the situation where a saw tooth that has been polished at a regular angle the first time is polished at a different angle the second time, resulting in the tooth profile being disrupted.

The device according to the present invention has a grinding wheel that is raised and lowered by a lifting mechanism in conjunction with the saw feed, and is linked to a swinging mechanism that has three positions: left inclined, right inclined, and horizontal.

A metalworking saw with three types of serrations: left-handed, cloth-swinging, and straight-swinging can be sharpened dynamically because the grinding wheel is rotated to match the descending slope to the left, the descending slope to the right, and the horizontal descent. Because of this, you can use a saw that you would previously throw away if the teeth became sharp, by sharpening it each time the four blades become sharp.

Not only can you save a huge amount of cutting tool costs.

If you sharpen the teeth from time to time, the sharpness of the saw blades will always be maintained well, making it possible to cut metal with accuracy, good cutting texture, and high work efficiency. Left in conjunction with lifting and lowering.

Since the rocking movement in which the horizontal position is added to the right tilt is performed in an orderly manner,
A special Asashi metalworking pot that applies straightness to left-handed and cloth-swinging is automatically polished, so the polishing cost is low, and if the grinding wheel wears out, it can be sharpened accordingly. This has the unique effect of making it possible to obtain a constant tooth profile and grinding angle by tilting the grinding wheel and centering its oscillation on its peripheral surface, regardless of the wear of the grinding wheel.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 7 is a perspective view showing a portion of a conventional metal saw. FIG. 2 is a longitudinally sectional front view of the fuselage showing an example of the implementation of the device related to the invention. Figure 3 is a plan view of the same as above. FIG. 7 is a vertically cross-sectional rear view of the rocking correction mechanism same as above. 5 to 7 are plan views showing the action of the cam of the swinging mechanism at the same time. FIG. 5 is a front view of the same as above with the grinding wheel tilted to the left and polishing the saw teeth. The second figure is an enlarged front view of the sawtooth polished by the same method as above. 7th
Figure 0 is a front view of the same as above, with the grinding wheel tilted to the right and polishing the saw teeth. FIG. 77 is an enlarged front view of the sawtooth polished as above. FIG. 72 is a front view of the -H in which the grinding wheel is horizontal and grinds the saw teeth. FIG. 73 is an enlarged front view of saw teeth polished by the same method as above. Figures 14' to 2 are perspective views showing the joint and -state of the metalworking saw, and figure 41 is the left finger.
The case where right-handed and straight saw teeth are arranged regularly is the 7th S.
Figures 1 and 2 show the case where each saw tooth is individually arranged. In the figure, 2 is a saw feeding member, A is a reciprocating mechanism, 7 is a band saw, a, b
, c is a sawtooth, 16 is a grinding wheel, B is a lifting mechanism, 22 is a rocking plate, C is a rocking mechanism, and 31 is a feeding mechanism. No to no-j

Claims (1)

[Scope of Claims] A saw feeding member that is driven by a reciprocating mechanism and sends out the saw teeth of a band saw in pitch increments, and an elevating mechanism that moves up and down in conjunction with the saw feeding to cut in and release the saw teeth with a grinding wheel. and a rocking plate that causes the lifting mechanism to rock around the contact point between the grinding wheel and the saw tooth, and converting the rocking plate into a left tilt, a right tilt, and a horizontal tilt in conjunction with the saw feed. The system also includes a swing mechanism that changes the cutting state of the grinding wheel against the saw tooth in three ways, and feeds out the grinding wheel according to wear. A copper new calendar device for metalwork, characterized in that it is equipped with a feeding mechanism that holds the outer periphery at the center of rotation of a rocking plate.