JPH0232345Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention relates to a device for polishing the saw teeth of a band saw blade.

(b) Prior Art Conventionally, as a device for polishing the saw teeth of a band saw blade, there is a device having a configuration as described in, for example, Japanese Patent Laid-Open No. 49-46292.

(c) Problems to be solved by the invention Conventional saw blade polishing devices are configured to constantly press and fix the band saw blade with a constant force using, for example, a spring. The blade may move. If the spring is made strong to increase the force that presses and fixes the band saw blade, it may become difficult for the feeding device to feed the saw blade in the longitudinal direction.

This idea was made in view of the conventional problems as described above.

(d) Means for solving the problems In view of the conventional problems as mentioned above, the present invention has the following problems:
a grinding wheel for polishing a saw blade in a band saw blade;
A guide device for guiding the band saw blade in the longitudinal direction, a fixing device for fixing the band saw blade in an immovable state during polishing of the saw tooth by the grinding wheel, and a pitch feeding device for feeding the band saw blade in the longitudinal direction at a predetermined pitch. In the sawtooth polishing device for band saw blades, the guide device includes:
The fixing device includes a guide support member having an arcuate guide surface that guides the side surface of the band saw blade, and the fixing device is capable of reciprocating toward and away from the guide surface of the guide support member, and is capable of moving the band saw blade toward and away from the guide surface of the guide support member. The pitch feeding device includes a pressing member that can be pressed and fixed to the guide surface, and the pitch feeding device includes a saw blade feeding member that has a feeding pawl that can be freely engaged with and detached from the saw teeth of the band saw blade at its tip.
The blade is swingable in the feeding direction of the band saw blade around the center of the guide surface, and when the pressing member operates to fix the band saw blade, the saw blade feeding member moves backward and the pressing member When operating to release the band saw blade, the saw blade feeding member moves forward to feed the band saw blade. One end of the link is pivotally connected to the pressing member, and the other end of the link is connected to the saw blade. The other end of the second link is pivotally connected to the sending member so that its position can be adjusted freely, and the other end of the second link is pivotally connected to a member that is reciprocated by an actuating device.

(e) Effect In the above configuration, the actuating device is actuated by the pressing member to press and fix the saw blade to the guide surface of the guide support member, and the pressing member fixes the saw blade immovably through the first link. Then, the saw blade feed member is moved backward via the second link. Next, when the actuating device is actuated to move the saw blade feeding member forward,
If the pressing member presses and fixes the saw blade, the saw blade feeding member cannot move forward, so first the pressing member releases the saw blade from fixation via the first link, and then moves the saw blade through the second link. The saw blade is fed through.
In other words, the pressing member and the saw blade feeding member are accurately interlocked.

Furthermore, by adjusting the pivot position of the second link relative to the saw blade feeding member, the pitch of the feed by the saw blade feeding member can be adjusted.

(f) Embodiment Referring to FIG. 1, the sawtooth polishing device 1 according to the embodiment is roughly installed on a bed 5 in the front-rear direction (first
A grindstone head 7 is provided which is movable in the horizontal direction (in the figure), and a whetstone wheel 9 for grinding the saw teeth of the band saw blade W is rotatably provided on the whetstone head 7. The grinding wheel 9 is rotated by a motor 11 mounted on the grinding wheel head 7. Further, the back and forth movement of the grindstone head 7 is performed manually by an operation handle 13 provided on the front side of the bed 5, or automatically by a feed motor 15 provided on the rear side. The switching mechanism for manual feeding using the operating handle 13 or automatic feeding using the feed motor 15 is the same as a normal switching mechanism, so a detailed explanation thereof will be omitted.

Table 17 attached to the top surface of the bed 5
is provided so as to be movable in the left-right direction (direction perpendicular to the paper surface in FIG. 1), and a band saw blade support device 3 for supporting the band saw blade W is provided on the table 17. This band saw blade support device 3 includes a guide device that guides the band saw blade W in the longitudinal direction, and a guide device that guides the band saw blade W in the longitudinal direction.
A fixing device that fixes the band saw blade W in an immovable state, and a pitch feeding device that feeds the bandsaw blade W in a predetermined pitch in the longitudinal direction are provided.

More specifically, as shown in FIG. 2, a guide support member 21 having a guide surface for guiding the side surface of the band saw blade W is fixed to the upper surface of the base plate 19 of the band saw blade support device 3. The guide surface of this guide support member 21 is formed in an arc shape in this embodiment. At a plurality of locations along the arc-shaped guide surface of the guide support member 21, in order to guide the band saw blade W along the guide surface,
A plurality of rollers 23 are rotatably provided as nipping guide members that nip and guide the bandsaw blade W between the guide surface and the band saw blade W. Further, on the upper surface of the guide support member 21, a guide block 25 is provided with a groove portion for avoiding interference with the saw teeth of the band saw blade W, and is attached via a bolt 27 so as to be freely adjustable in position. ing.

With the above configuration, the bandsaw blade W is connected to the guide support member 2.
It will be appreciated that longitudinal movement can be guided along one arcuate guide surface.

When the saw teeth of the band saw blade W are polished by the grinding wheel 9, in order to press and fix the band saw blade W to the guide surface of the guide support member 21 in an immovable state, the guide support member 2 is placed on the upper surface of the base plate 19.
A pressing member 31 is located at a position facing the guide surface 1.
is provided so as to be movable toward and away from the guide surface. More specifically, the base plate 19 is provided with a guide groove 29 extending in a direction crossing the guide surface, and a portion of the pressing member 31 is slidably engaged with the guide groove 29. .

In order for the pressing member 31 to reciprocate along the guide groove 29, an actuating device 59 is provided on the upper surface of the base plate 19 so as to be adjustable via a bolt 61. In this embodiment, this actuating device 59 is composed of a fluid pressure cylinder equipped with ports 55 and 57, and a pin 33 is attached to the tip of a piston rod 63 that is reciprocatably provided in this fluid pressure cylinder. One end of the link 35 is pivotally connected to the pressing member 31 via a pin 65, and the other end of the link 35 is pivotally connected to the pressing member 31 via a pin 65.

With the above configuration, when the pressing member 31 reciprocates along the guide groove 29 in conjunction with the reciprocating movement of the piston rod 63 and moves toward the guide surface of the guide support member 21, the band saw blade can be pressed and fixed to the guide surface. That will be understood.

In order to feed the band saw blade W at a predetermined pitch in the longitudinal direction, a saw blade feeding member 37 equipped with a feeding pawl 43 that can be freely engaged with and detached from the saw teeth of the band saw blade W is mounted on the base plate 19 so as to reciprocate in the feeding direction of the band saw blade. It is set up freely. More specifically, in this embodiment, the saw blade feeding member 37 is constituted by a swinging member whose base end is pivotally connected to the base plate 19 via a pivot shaft 39. The pivot shaft 39 is located at the center of the arcuate guide surface of the guide support member 21, and the tip of the swinging member draws an arc having the same radius as the guide surface. As shown in FIG. 5, the feed claw 43 is always urged to protrude by an internal spring 41 at the tip of the saw blade feed member (swinging member) 37, and is not engaged with the saw teeth of the band saw blade W. It is removable.

In order to reciprocate (swing) the saw blade feeding member 37, the saw blade feeding member 37 has longitudinal adjustment grooves 4.
A stroke adjustment block 47 is provided in the adjustment groove 45 so that its position can be freely adjusted, and is fixed at the adjustment position by a set screw 49. Then, the stroke adjustment block 4
The other end of the link 53 is pivotally connected to the piston rod 63 via the pin 65.

Therefore, it is understood that the saw blade feeding member 37 can be reciprocated by the operation of the differential device 59.

In the above configuration, a part of the band saw blade W is positioned between the arc-shaped guide surface of the guide support member 21 and the plurality of rollers 23, and the band saw blade W is moved in the longitudinal direction along the guide surface. Position it in advance so that it can be used. After positioning the band saw blade W, when the differential device 59 is operated to cause the piston rod 63 to protrude, the pressing member 31 is brought close to the guide surface of the guide support member 21 via the link 35, and the band saw blade is moved toward the guide surface. The blade W is pressed and fixed in an immovable state. By the protruding operation of the piston rod 63, the saw blade feeding member 37 is moved backward from the imaginary line position shown in FIG. 2 to the solid line position via the link 53.

As described above, when the band saw blade W is pressed and fixed in an immovable state, the saw teeth of the band saw blade 9 are polished by the grinding wheel 9.

Next, the piston rod 6 in the actuating device 59
3, the pressing member 31 is separated from the guide surface via the link 35, and the bandsaw blade W is released from being fixed. At the same time, the saw blade feeding member 37 is moved forward via the link 53 from the position shown by the solid line shown in FIG. 2 to the position shown by the imaginary line. Therefore, the band saw blade W is pushed forward by the feed pawl 43 and moved by a predetermined pitch in the longitudinal direction, and the next saw blade is positioned at a position corresponding to the grinding wheel 9, and the band saw blade W is moved by the pressing member 31. After being pressed and fixed again, the next saw tooth will be polished, and the saw teeth of the band saw blade will be polished one after another.

If the pitch of the saw teeth in the band saw blades differs depending on the band saw blades, and if the pitch feed amount of each band saw blade differs, this can be easily done by adjusting the position of the adjustment block 47 provided on the saw blade feeding member 37. can correspond to

(g) Effect of the invention As can be understood from the explanation of the embodiments above, the gist of the invention is as stated in the claims for registration of a utility model, and as is clear from the description, the invention The device is equipped with a fixing device that fixes the band saw blade in an immovable state and a pitch feeding device that feeds the band saw blade in the longitudinal direction at predetermined pitches, and the pressing member 31 in the fixing device is
and the saw blade feeding member 37 in the pitch feeding device are interlocked with each other through a link 35 having one end pivotally connected to the pressing portion 31 and a link 53 having one end pivotally connected to the saw blade feeding member 37. The pressing member 31 and the saw blade feeding member 37 are operated by a common actuating device 59.

Therefore, according to the present invention, the fixing of the band saw blade by the pressing member 31 in the fixing device and the feeding action of the band saw blade by the saw blade feeding member 37 in the pitch feeding device can be performed alternately and reliably. . Further, since the band saw blade is immovably fixed during polishing of the saw teeth, polishing can be performed in a stable state, and accurate polishing can be performed. Furthermore, by sharing the actuating device 59, the configuration is further simplified. Further, one end of the link 53 is connected to the saw blade feeding member 3.
7 is pivotally connected to adjust the position, so by adjusting the pivot connection position, the pitch feed amount can be adjusted appropriately, and it can easily accommodate saw blades of various pitches. be.

[Brief explanation of drawings]

The attached drawings show examples, and FIG.
A front view of the device according to the embodiment of this invention, FIG. 2 is a plan view of the main part, and FIG.
4 is a cross-sectional view, and FIG. 5 is a cross-sectional view. 5... Bed, 7... Grinding wheel, 9... Grinding wheel,
21... Guide support member, 31... Pressing member,
37... Saw blade feeding member, 43... Feeding claw, 59...
...actuating device.

Claims (1)

[Scope of claim for utility model registration] A grinding wheel for polishing the saw blade of a band saw blade, a guide device for guiding the band saw blade in the longitudinal direction,
A band saw blade saw tooth polishing device comprising: a fixing device for fixing the band saw blade in an immovable state during polishing of the saw tooth by the grinding wheel; and a pitch feeding device for feeding the band saw blade at predetermined pitches in the longitudinal direction; The device includes a guide support member 21 having an arcuate guide surface that guides the side surface of the band saw blade, and the fixing device reciprocates in a direction toward and away from the guide surface of the guide support member 21. The pitch feeding device includes a saw blade feeding member 37 which is equipped with a feeding pawl 43 at its tip that can be freely engaged with and detached from the saw teeth of the band saw blade. is swingable in the feeding direction of the band saw blade around the center of the guide surface, and when the pressing member 31 operates to fix the band saw blade, the saw blade feeding member 37 operates backward; The other end of the link 35 has one end pivotally connected to the pressing member 31 so that when the pressing member 31 operates to release the band saw blade, the saw blade feeding member 37 moves forward to perform a feeding action on the band saw blade. and the other end of the link 53, whose one end is pivotally connected to the saw blade feeding member 37 in a position adjustable manner, are pivotally connected to a member that is reciprocated by an actuating device 59. Sawtooth polishing device for band saw blades.