JP2000176906A - Stationary drill for woodworking - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a hole from bending in the case of working a deep hole by installing a drill bushing to be fitted to a drill on an end of a vice device interlockably with the vertical movement of the drill, and making the drill bushing rotatable. SOLUTION: A wood 21 is fixed to a vice device 2. A drill unit 6 is moved vertically by turning a vertical movement handle 10 to set a drilling height position. A drill bushing follows the vertical movement of the drill unit 6 together with a bush holder 14 under the guidance of a longitudinal guide 12. When the drilling height position is reached, the bush holder 14 is fixed by a knob 19. A drill 9 is rotated by driving a motor. In this case, the drill bushing rotates together with the drill 9, accordingly the wear of the drill bushing is reduced. A lever 11 which moves to the right/left is transferred to the left, and the drill unit 6 is advanced to the wood side. Thus the drill 9 is penetrated in the woodworking face to open a hole.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stationary drill for woodworking, which drills a hole in the mouth of wood with a drill.

[0002]

2. Description of the Related Art In recent years, as a means for joining wood to wood, a metal fitting construction method of joining wood with metal fittings has become widespread. As shown in FIG. 5, a steel pipe is inserted into a hole 22 drilled at a depth of 200 mm to 300 mm at the center of the wood opening 21a of the wood 21, and the wood is joined via the steel pipe.

A hole 22 is formed in the wood 21 at the center of the opening 21a.
To open the drill, a stationary drill for woodworking equipped with a drill unit and a vice device for fixing wood to the base was used.

[0004]

In the case of making a deep hole with a drill, there has been a problem that the longer the drill is, the more the drill easily swings and the hole is bent.

[0005] An object of the present invention is to solve the above-mentioned problems of the prior art and prevent bending of a hole during deep hole processing.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to provide a vice device for holding wood, and a stationary drill for woodworking in which a drill held by a cutting head moves vertically and vertically with respect to the vise device. This is achieved by mounting a drill bush that fits with the drill so as to be interlocked with the vertical movement of the drill, and enabling the drill bush to rotate.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 is a front view of a stationary drill for woodworking, FIG. 2 is a left side view of FIG. 1, FIG. 3 is a sectional view taken along line AA, and FIG. 4 is a front view showing a state where the drill unit is moved.

In the figure, a pair of front and rear guides 3 are fixed on the upper surface of a base 1 in the horizontal direction, and a vise device 2 is fixed to one end of the front and rear guides 3. A slide frame 4 is fitted to the front / rear guide 3 so as to be movable in the left-right direction in FIG. 1 and supports one end of a left-right movement lever 11 extending obliquely upward to the base 1. Are linked by a link 7. Left and right moving lever 1
When 1 is tilted left and right in FIG. 1, the slide frame 4 moves in the left and right directions via the link 7 using the front and rear guide 3 as a guide.

Two vertical guides 5 are provided on the slide frame 4.
And a bridge 17 connecting the upper and lower guides 5 is fixed to the upper end of the upper and lower guides 5, and the upper and lower guides 5 hold a drill 9 and a drill 9 which project in parallel to the front and rear guides 3 toward the vise device 2. The drill unit 6 having the drill chuck 8 is mounted. A feed screw 18 located between the vertical guides 5 penetrates the bridge 17, and the vertical movement handle 10 is fixed to one end of the bridge 17. When the vertically moving handle 10 is rotated, the drill unit 6 is vertically moved by the feed screw 18.

[0010] A guide holder 12 is fixed to the drill unit 6 side of the vise device 2, and the vertical guide 1 is attached to the guide holder 12.
3 is erected. A bush holder 14 is fitted to the vertical guide 13 so as to be vertically movable, and as shown in FIG.
6 and rotatably provided, and a part of the drill 9 is supported in the drill bush 15. Drill bush 1
Reference numeral 5 denotes a length that is at least twice the outer diameter of the drill 9 in order to improve the drilling accuracy. By tightening the knob 19 provided on the bush holder 14, the bush holder 14 is fixed to the vertical guide 13. Since the drill bush 15 supports a part of the drill 9, the drill bush 15 follows the movement of the drill unit 6 together with the bush holder 14. At this time, in order to move the bush holder 14 smoothly, the length of the sliding portion between the vertical guide 13 and the bush holder 14 is set to be equal to or greater than the horizontal length of the drill bush 15.

In the above configuration, the wood opening 21 of the wood 21
A method for making a hole 22 at the center a will be described. First,
The wood 21 is fixed to the vise device 2. The vertical movement handle 10 is turned to move the drill unit 6 up and down to set the drilling height position. The drill bush 15 follows the vertical movement of the drill unit 6 together with the bush holder 14 using the vertical guide 13 as a guide. When the height of the hole is reached, the bush holder 14 is fixed with the knob 19.

Next, a drill (not shown) is driven to rotate the drill 9. At this time, the drill bush 15 rotates together with the drill 9, so that the drill bush 1
5 can be reduced. The left / right moving lever 11 is moved to the left, the drill unit 6 is advanced toward the wood 21 side, and the hole 9a is pushed into the drill 9 to make a hole. Since the drill 9 is supported by the drill bush 15, the drill 9 is always supported at two front and rear positions, and the drill 9 can move horizontally without swinging, and can make a deep hole with high accuracy.

[0013]

According to the present invention, the drill is supported back and forth by the drill bush, so that the drill can be machined with high precision without drilling or shaking during the drilling operation.

[Brief description of the drawings]

FIG. 1 is a front view of a stationary drill for woodworking showing an embodiment of the present invention.

FIG. 2 is a left side view of FIG.

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is a front view showing a state where the drill unit is moved.

FIG. 5 is an explanatory view showing a state in which a hole is made in a wood mouth surface.

[Explanation of symbols]

9 ... drill, 14 ... bush holder, 15 ... drill bush, 16 ... ball bearing.

Claims (1)

[Claims] 1. A vice device for holding wood, and a stationary bushing for woodworking in which a drill held by a cutting head moves up and down and up and down with respect to the vice device, a drill bush fitted to one end of the vise device. A stationary drill for woodworking, wherein the drill bush is rotatable in such a manner that the drill bush is rotatable.