JPS5920444B2 - Ant, sickle "Hozu" - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vertical saw blade angle adjusting device for a dovetail and sickle handle cutting machine that processes flat handles, dovetail handles, and sickle handles.

1 and 2 show a vertical saw blade angle adjusting device for a conventional dovetail and sickle handle removal machine, FIG. 1 being a cross-sectional plan view, and FIG. 2 being a right side view of FIG. 1.

In the figure, 1 and 2 are vertical saw blades, 3 is a horizontal saw blade, 5 and 6 are movable frames, and 7.8 is a fixed frame.

A left-handed male thread 38 and a right-handed male thread 39 are rotatably supported on the fixed frame 7°8, and the male thread 38 has a female thread 40, and the male thread 39 has a female thread. 41 is screw-fitted.

One end of links 42 and 43 is connected to each of the female threads 40 and 41, and the other ends of the links 42 and 43 are connected to right and left movable frames 21 and 22, respectively.

A spline 23 is fitted into the male threads 38 and 39, and an angular opening/closing handle 13 is attached to one end of the spline 23.

Note that 18 is a support.

In the above structure, by rotating the angle opening/closing handle 13, the female screws 40 and 41 move to the position indicated by the two-dot chain line, and the link 4 connected to the female screws 40 and 41 moves accordingly.
2, 43 rotates the right and left movable frames 2L22,
The right vertical saw blade 1 and the left vertical saw blade 2 attached to the right movable frame 7 and the left movable frame 6 are positioned on a line passing through the outer circumference tip of the horizontal saw blade and the outer circumferential tip of the vertical saw blade, respectively, as the rotation center 46.
It was possible to rotate as

However, in order to rotate the movable frames 5 and 6,
It is necessary to increase the length of the male screws 38, 39 by the amount of movement of 0.410, and the size of the housing portion for the male screws 38, 39 increases, making it impossible to downsize the product.

Further, there is a drawback that the amount of displacement per rotation of the angle opening/closing handle required for angular displacement is small and the angle opening/closing operation is troublesome.

The present invention has been made in view of the above-mentioned circumstances, and it is an object of the present invention to provide a vertical saw blade angle adjustment device for a dovetail and sickle handle removal machine that can be miniaturized and is easy to open and close. .

The ant and sickle delivery machine of the present invention includes a head slidably attached to a column planted on a base, a right and left fixed frame and a right and left movable frame supported on the head in right and left pairs, respectively. A horizontal saw blade driven by a motor supported on the fixed frame, and an arc formed by a predetermined radius whose rotation center is a position on a line passing through the outer peripheral tip of the horizontal saw blade and the vertical saw blade, respectively. and the vertical saw blade driven by a motor on the movable frame which is rotatably driven, and the motors of the horizontal saw blades are each fixed to one opening/closing screw having threads in opposite directions. The right and left fixed frames are screwed and slidably attached to the head, and the right and left fixed frames are rotatably supported by the right and left fixed frames, are twisted in opposite directions, and are rotationally driven via speed increasing means and splines. the right and left movable frames to which are fixed a worm and a gear formed in an arc shape guided by respective arcuate ends formed on the right and left fixed frames at a predetermined radius from the center of rotation and driven by the worm; It has been established.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the vertical saw blade angle adjusting device for a dovetail and sickle handler according to the present invention will be described below with reference to FIGS. 3 to 8, with the same parts as in FIGS.

Figure 3 is a plan view of the main part, Figure 4 is a right side view, Figure 5 is an enlarged cross-sectional view of the V-■ arrow section in Figure 4, and Figure 6 is Vl in Figure 4.
- An enlarged cross-sectional view of the section viewed from arrow VI, Figure 7 is an explanatory diagram of the rotation of the vertical saw blade when machining the sickle handle using the mechanism shown in Figure 6, and Figure 8 is viewed from the ■-■ arrows of Figure 6. It is a partial cross-sectional enlarged view.

3 to 6, reference numeral 15 denotes a base, two columns 1616 are installed on the base 15, a coiled spring 17 is fitted loosely into the column 16, and a head 14 is attached to the upper part of the spring 17. are fitted to be slidable in the vertical direction.

Sliding pipes 9 and 10 are fixed to the left and right sides of the head 14, respectively, and a right fixed frame 7 and a left fixed frame 8 are slidably fitted and attached to the sliding pipes 9 and 10, respectively.

A support 18 is fixed to one end of the sliding pipe 9, and the opening/closing screw 11, which is rotatably supported by the support 18 and has a forward and reverse screw, is fitted with a forward and reverse screw into the right fixed frame 7 and the left fixed frame 8, respectively. are combined.

By rotating the opening/closing bundle 12 fixed to the shaft support side of the opening/closing screw 11, the right and left fixed frames 7.8
is the opening direction arrow 31 using the sliding pipes 9 and 10 as guides,
It can be moved toward the closing direction arrow 33 side.

A right horizontal saw blade 3 and a regular horizontal saw blade 4 driven by a motor are attached to the right fixed frame 7 and the left fixed frame 8, respectively.

A spline 23 is pivotally supported on the support 18, and the spline 23 includes a worm 24 that is pivotally supported on the right fixed frame 7 and has a positive twist, and a worm 24 that is pivoted on the left fixed frame 8 and has a twist in the opposite direction. The worm 25 is fitted with the worm 25.

The worms 24 and 25 have right and left fixed frames 7.
A gear 19.8 having helical teeth in forward and reverse directions is pivotally supported by a gear 19.
20 are in mesh with each other, and the gears 19 and 20 are also in mesh with gears 21 and 22 which are provided on the right and left movable frames 5.degree.

The right and left movable frames 5 and 6 are arranged in an arc shape on the right and left fixed frames 7.8 with a predetermined radius, with the center of rotation 46 being a position on a line passing through the outer peripheral tips of the horizontal saw blade and the vertical saw blade, respectively. It is rotatably mounted on the ends 26,27.

Then, as shown in FIG. 8, the right movable frame 5 (same for the left movable frame 6) is attached to the arcuate dovetail groove 26 by eliminating the play with the razor 35 attached by the adjusting screw 36 and fixing nut 37. It is being

Motors having a right vertical saw blade 1 and a left vertical saw blade 2 are fixed to the right and left movable frames 5 and 6, respectively.

Further, as shown in FIG. 6, a gear 28 with a small number of teeth is fixed to the shaft support side of the spline 23.
A bundle gear 29 which is pivotally supported by the support 18 and rotated and driven by the angular opening/closing bundle 13 is meshed with the bundle gear 8 and is provided with speed increasing means.

Note that 34 is a pin that rotatably supports the gears 19 and 20, respectively.

In the above structure, by rotating the angle opening/closing handle 13, the spline 23 is rotated through the bundle gear 29 and the gear 28, and the worm wheels 24 and 25 are driven. The right and left movable frames 5 move along the arcuate ends 26.27 provided on the right and left fixed frames 7.8.
, 6 are rotated around a rotational fulcrum 46.

If this is explained using a dovetail pattern, it becomes the movement shown by the chain double-dashed line in FIG.

That is, by rotating the angle opening/closing bundle 13 in the forward direction,
The right and left movable frames 5 and 6 rotate in the directions of arrows 30, and accordingly, the right and left vertical saw blades 1 and 2 also rotate simultaneously in the directions of arrows 30 to perform dovetail machining.

Next, to explain the rotation of the vertical saw blade during sickle handle processing with reference to FIG. 7, by rotating the angle opening/closing bundle 13 in the opposite direction, the right and left movable frames 5 and 6 are rotated in the direction of the arrow 32 in FIG. The right and left vertical saw blades 1 and 2 simultaneously rotate from the position indicated by the two-dot chain line to the position indicated by the solid line, allowing sickle handle machining.

Note that even if the opening/closing bundle 12 is rotated to drive the opening/closing screw 11 and slid in the opening direction 31 and the closing direction 33 in FIG. The angle of the vertical saw blade does not change just by sliding.

In this way, the vertical saw blade angle adjustment device of the dovetail and sickle handle removal machine of this embodiment rotates the movable frame to which the right and left vertical saw blades are attached via the worm driven by the spline shaft and the gear that meshes with the worm. In addition, since the angular displacement speed can be increased, operability and work efficiency can be improved.

In addition, since the worm only rotates and does not move on the spline shaft, the storage space for the worm is small, and the product can be made smaller.

FIG. 9 shows another embodiment, which differs from the above embodiment in that the above embodiment drives an arcuate gear via a normal worm driven by a spline shaft and a gear that meshes with this worm. In this embodiment, the gears 21, 22 of the movable frames 5, 6 are directly driven via trapezoidal worms 44, 45 driven by the spline 23.

In this embodiment, since the worms 24, 25 and the gears 19 and 20 are replaced with trapezoidal worms 44, 45, the number of parts can be reduced and the size can be reduced, and the same effects as in the above embodiment can be obtained.

As mentioned above, the angle adjusting device of the present invention has a configuration in which the movable frame is driven by a worm and an arcuate gear, so it can be configured compactly with few moving parts, and since it is gear driven, it can be operated with a constant small force. It has excellent practical effects in that there is little backlash and highly accurate angle adjustment is possible.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the vertical saw blade angle adjustment device of a conventional dovetail and sickle removal machine, Fig. 2 is a right side view of Fig. 1, and Fig. 3 is a vertical view of the dovetail and sickle handle removal machine of the present invention. A plan view of an embodiment of the saw blade angle adjustment device, FIG. 4 is a right side view of FIG. 3, and FIGS. 5 and 6 are cross sections taken along the arrows V-■ and ■-■ of FIG. 4, respectively. Fig. 7 is the same cross-section as Fig. 6, and is an explanatory diagram of the vertical saw blade rotation during sickle handle processing, Fig. 8 is a large cross-sectional view of the section taken along the ■-■ arrows in Fig. 6, and Fig. 9 is the invention of the present invention. FIG. 6 is a sectional view of the same part as FIG. 6 of another embodiment of the vertical saw blade angle adjusting device for the dovetail and sickle handler. 1...Right vertical saw blade, 2...-Left vertical saw blade, 3...
...Right horizontal saw blade, 4...Left horizontal saw blade, 5...
...-Right movable frame, 6...Left movable frame, 7...Right fixed frame, 8...Left fixed frame, 11-...Opening/closing screw, 13...
...Angle opening/closing...Handle, 14...Head, 1
5.. ...Base, 16...Column, 19,20,
21゜22.2B...Gear, 23--Spline, 24゜25...Worm, 26, 2
7...Circular dovetail portion, 29...Bundle gear, 34...Pin, 46...Rotation center.

Claims (1)

[Scope of Claims] 1. A head that is supported by a column installed on a base so as to be slidable up and down, and a horizontal saw blade is attached and supported on the head so that it can be opened and closed left and right by an opening and closing screw that has left and right threads. In the dovetail and sickle handle removal machine having a pair of fixed frames, each of the fixed frames is provided with an arcuate groove centered at the intersection of the vertical saw blade and the horizontal saw blade, and the vertical saw blade is attached to the circular arc groove. The movable frame is fitted to form an arcuate gear part on the outer periphery of the movable frame, and the pair of fixed frames rotatably support a worm having a right-hand thread and a worm having a left-hand thread. A vertical saw blade angle adjusting device in which the left and right worms are rotated simultaneously by having a spline shaft slidably pass through the part, and the left and right worms are engaged with an arcuate gear part of the movable frame. 2. The vertical saw blade angle adjusting device according to claim 1, wherein the spline shaft is connected to a handle shaft via speed increasing means.