JPS596982Y2 - Circular saw vertical position adjustment device in circular saw cutting machine - Google Patents

Description

[Detailed description of the invention] This invention uses an electric motor to adjust the protruding position of the table top of a circular saw for cutting aluminum profiles at high speed as appropriate depending on the type of work or dimensional errors caused by saw blade polishing. This invention relates to a circular saw vertical position adjustment device that can be adjusted in stages.

As shown in FIGS. 7 and 8, the conventional adjustment device has a support plate C equipped with a circular saw B that is rotated at high speed by an electric motor A installed at the bottom of the table. At the same time, an operating lever F is fixed to the outer end of the pivot shaft D, and a positioning plate H is fixed to the table machine frame G, and holes I are provided at predetermined intervals below the positioning plate H. ..., align the hole J drilled in the operating lever F with the desired one of these holes ■..., and insert the pin K.
The operating lever F is fixed in position,
In this selective insertion fixing method of pins K and holes ■..., even if the number of holes I in the positioning plate H is increased and the pitch is made smaller, there are limits to the circular saw B.
The amount of protrusion of the circular saw B can only be adjusted stepwise after all, and therefore, there is a problem in that minute displacement adjustments of the circular saw B cannot be made, for example, when correcting dimensional errors due to saw tooth polishing.

The purpose of the present invention is to provide a circular saw vertical position adjustment device that can solve the problems of the conventional devices as described above. I will explain.

In the drawings, reference numeral 1 denotes an operating lever, one end of which is fixed to the outer end of a pivot 3 that pivots a support plate for mounting a circular saw (not shown) on the lower side of the table 2, and the other end is attached to the inner surface of the table 2. The mounting block 4 is fixed with screws 5.

Reference numeral 6 denotes an arch-shaped rail for positioning guide, which is arranged at a required radius position centered on the axis of the pivot shaft 3 on the outer surface of the side plate 8 fixed to one side of the table machine frame 7. and is fixed by the operating lever 1.
is in sliding contact with the circumferential surface 6a of the positioning guide rail 6, and also in contact with the inner end surface 4 of the mounting block 4.
a rotates around the pivot 3 while maintaining a required gap from the outer circumferential surface 6b of the rail 6.

In addition, on the outer peripheral surface of the positioning guide rail 6, scales 10 are provided at regular intervals in the circumferential direction so that the amount of displacement of the circular saw (not shown), which moves up and down with the rotation of the operating lever 1, relative to the top surface position of the table 2 can be confirmed. It is engraved.

As shown in FIGS. 4 and 5, a cutout groove 11 is provided at the inner end of the mounting block 4 fixed to the free end of the operating lever 1, and a fixing piece is inserted into this groove 11. The pieces 12 are lightly fitted together, and the tip of the piece 12 is made to protrude from the inner end surface 4a of the block 4, so that the tip 12a is brought into light contact with the outer peripheral surface 6b of the positioning guide rail 6, and The addition block 4 is provided with a tapped hole 13 that penetrates from its outer end surface 4b to the bottom surface of the groove 11 at its inner end. By screwing them together and rotating the handle portion 14b, the tip of the threaded portion 14a presses the fixing piece 12 against the outer peripheral surface 6b of the positioning guide rail 6, thereby allowing the operating lever 1 to be rotated as desired. It can be fixed in any moving position.

Further, as is clear from FIGS. 4 and 6, a slide piece 15 is arranged in the cutout groove 11 at the inner end of the mounting block 4 so as to be adjacent to the fixing piece 12. , this slide piece 15 is screwed into a threaded rod 17 which is axially mounted on both side walls 16, 16 of the notch groove 11, and the slide piece 15
A scale indicating piece 18 is protruded from the tip and extends through the gap between the inner end surface 4a of the block 4 and the outer circumferential surface 6b of the positioning guide rail 6 so as to be exposed on the upper surface side of the block 4,
By rotating the threaded rod 17 via the handle portion 17a, the slide piece 15 is moved in the axial direction of the rod 17, so that the reference position of the scale indicating piece 18 can be adjusted as appropriate.

Furthermore, as is clear from FIGS. 2 and 4, a plurality of holes 19 are provided at predetermined intervals in the circumferential direction of the circumferential surface 6a of the positioning guide rail 6. On the other hand, a hole 20 is drilled in a required part of the operating lever 1 corresponding to this hole 19, and by aligning the hole 2o of the lever 1 with a desired hole 19 on the rail 6 and inserting a pin 21, the lever 1 can be opened. It is designed to fix the position.

In the circular saw vertical position adjustment device constructed as described above, if the protruding position of the circular saw relative to the top surface of the table 2 needs to be roughly set or adjusted, the clamp rod 14 may be loosened. Positioning guide rail 6
Align the hole 20 drilled in the operating lever 1 with the desired hole 19 drilled in the circumferential side of the pin 2.
By inserting the pin 21, the lever 1 is fixed, and the circular saw is held in a position where it protrudes the required amount from the top surface of the table 2 via the pivot 3 and the support plate (not shown). By removing the pin 21, the lever 1 is rotated. This means that you can move freely.

On the other hand, if the radius of the circular saw changes slightly after polishing the saw teeth, loosen the clamp rod 14 that constitutes the clamping means to release the pressing action of the fixing piece 12 on the rail 6. First, the operating lever 1 is rotated around the pivot 3 via the handle portion 14b, and the upper edge of the circumferential edge of the circular saw with polished saw teeth is aligned with the upper surface position of the table 2 (the position of zero protrusion), and this alignment is performed. In this state, rotate the slide piece 15 to position the tip of the scale indicating piece 18 on the guide rail 6.
A so-called zero point adjustment is performed in accordance with the reference point, that is, the zero point, of the scale 10 on the outer circumferential surface, and the tip of the scale indicating piece 18 is placed above the scale 10 by a scale corresponding to a predetermined amount of protrusion from the top surface of the table 2 of the circular saw. After rotating the operating lever 1 until it reaches a predetermined position, the clamp rod 14 is rotated in the tightening direction via the handle portion 14b to press the piece 12 against the outer peripheral surface of the rail 6 and fix the operating lever 1 in position. .

In addition, when changing the protrusion amount of the circular saw depending on the type of aluminum profile cutting work, loosen the clamp rod 14 and remove the piece 12.
All that is required is to release the pressing action on the outer peripheral surface of the rail 6, rotate the lever 1 while aligning the tip of the scale indicating piece 1B to a predetermined position on the scale 10, and tighten the clamp rod 14.

In the above embodiment, the mounting block 4 is separately fixed to the inner surface of the free end of the operating lever 1, but according to the present invention, the block 4 can be formed integrally with the lever 1. .

In addition, the clamp rod 14 is arranged parallel to the longitudinal direction of the operating lever 1, and the fixing piece 12 is positioned on the guide rail 6.
However, the present invention is not limited to such a structure; the clamp rod 14 is screwed in a direction transverse to the lever 1, and the piece 12 is pressed against the rail 6. The structure may be such that it is brought into pressure contact with the peripheral side surface 6a of the.

Furthermore, the scale 10 is arranged on the outer circumferential surface 6b or the circumferential side surface 6a of the rail 6.
It may be provided in either.

As explained above, the circular saw vertical position adjustment device of the present invention has
An arch-shaped rail for positioning guide is arranged on the table machine frame, and the operating lever is equipped with a clamping means that presses against the circumferential surface of the arch-shaped rail, and a clamp means is provided on the circumferential surface of the rail near the pressure-contacting surface of the operating lever. Since it is equipped with a scale indicating piece that can be finely adjusted along the scale, the vertical position of the circular saw can be adjusted steplessly by tightening and loosening the clamp means and moving the lever up and down. , and even sawtooth polishing,
Or, when making minute displacement adjustments of a circular saw, such as when correcting dimensional errors due to wear, by adjusting the zero point with the scale indicator piece, the displacement adjustment can be done more accurately and quickly. .

[Brief explanation of drawings]

Fig. 1 is a side view of a circular saw vertical position adjustment device according to an embodiment of the present invention, Fig. 2 is a perspective view of the same, Fig. 3 is an enlarged view taken from arrow III in Fig. 1, and Fig. 4 is a side view of a circular saw vertical position adjusting device according to an embodiment of the present invention. IV-IV in Figure 3
5 is a sectional view taken along the line ■-V in FIG. 4, FIG. 6 is a sectional view taken along the VI-VI line in FIG. 4, FIG. 7 is a side view of the conventional device, and FIG. 8 is the same as above. FIG. 1... Operation lever, 2... Table,
3... Pivot, 6... Positioning guide rail, 7... Table machine frame, 10...
Scale, 12...Fixing piece, 14...
Clamp rod, 1B...Scale indicator piece.

Claims (1)

[Scope of utility model registration request] A support plate equipped with an electric motor and a circular saw that rotates at high speed is attached to the lower part of the table by a pivot, one end of an operating lever is fixed to the outer end of the pivot, and the other end of the lever is attached to the outer end of the pivot. In a device in which a circular saw is moved up and down with respect to the top surface of the table by rotating around the operating lever, an arch-shaped rail for positioning and guiding is provided on the table machine frame in the rotating direction of the operating lever, and the operating lever is is equipped with a clamping means that presses against the circumferential surface of the arched rail, and is equipped with a scale indicator near the pressure contacting surface of the clamping means that can be finely adjusted along a scale carved on the circumferential surface of the rail. A circular saw vertical position adjustment device in a circular saw cutting machine, which is characterized by: