JPH0872006A - Woodworking wheel machine - Google Patents

Abstract

PURPOSE: To constitute a belt so that the belt is neither hurted nor damaged nor broken nor extended through, by providing a motor floatably on a spindle side at the time of a shock to the belt. CONSTITUTION: A motor base 10 is arranged turnably counterclockwise centering around a frame shaft 8 within a range of a movement of an edge piece 15 of a pipe 14 to the upper part by a rotation of the pipe 14. When the edge of a blade is caught strongly by a work at the time of cutting, a hasty and strong load is applied to a rotation of a spindle, the strong load is applied to a belt 3 and though force in the direction opposite to a running direction of a belt 34 is generated, at this time a motor base 10 is turned counterclockwise centering around a frame shaft 8 until a projecting piece 16 abuts against a head 17a of a bolt 17. Since the pipe 14 is turned further until the edge piece 15 attains to the upper part, the belt 34 is prevented from being damaged or hurted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a woodworking lathe.

[0002]

2. Description of the Related Art In a conventional woodworking potter's wheel, a motor is fixed to the main body of the woodworking potter's wheel, and a belt is stretched between a pulley attached to the drive shaft of the motor and a pulley attached to the spindle. The spindle is rotationally driven by and the workpiece is chucked at one end of the spindle to be rotated and is cut by the blade while being rotated.

[0003]

However, in such a conventional woodworking lathe, the work material and the spindle are temporarily stopped by the work material being strongly caught at the cutting edge during cutting of the work material by the blade. Then, when a strong and sudden impact is applied to the belt, there is a problem that the belt is damaged, broken, broken, or completely extended. An object of the present invention is to provide a woodworking lathe that solves such problems.

[0004]

In order to achieve the above object, according to the present invention, in a woodworking lathe for rotating a spindle by a belt laid between a pulley attached to a drive shaft of a motor and a pulley attached to a spindle, It is characterized in that the motor can be lifted up to the spindle side when the belt is impacted.

[0005]

As described above, in the woodworking lathe of the present invention, when the belt is impacted, the motor can be lifted to the spindle side, so that the impact on the belt is absorbed.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a woodworking lathe according to an embodiment of the present invention. On the upper surface of the base 1, first and second frame plates 2 and 3 are attached at their lower ends at right angles to mounting pieces 2a and 3
It is fixed by a screw 4 at a.

The first and second frame plates 2 and 3 are connected and fixed by pipe-shaped frame shafts 5, 6 and 7, 8 which are parallel to each other at their upper ends and intermediate portions. A plate-shaped motor base 10 is attached to the frame shafts 7 and 8. The motor 20 is fixed to the upper surface of the motor base 10 such that the drive shaft 21 is parallel to the frame shafts 5, 6, 7, and 8. A plurality of stages of pulleys 22 are fixed to a drive shaft 21 of the motor 20.

A spindle 32 is rotatably mounted above the first and second frame plates 2 and 3 by U-shaped supports 30 and 31 in parallel with the frame shafts 5, 6, 7 and 8. Has been. A pulley 33 is provided on the spindle 32.
Is fixed to the pulley 33 and the motor 2
A belt 34 spans between the pulley 22 fixed to the drive shaft 21 of 0.

An annular flange portion 35 is provided on one end side of the spindle 32, and a threaded surface 36 is provided on the outer periphery of the tip end side thereof. The spindle 32 is provided with a concentric shaft hole 37 penetrating in the longitudinal direction. An inclined portion 37 a whose inner diameter gradually increases toward the opening 38 is provided on one end side of the shaft hole 37.

The cover 40 has the first and second frame plates 2,
It is attached to the upper end of 3 by a hinge (not shown) so as to be openable and closable, and the spindle 32 projects outward from the notches 41 and 42 on both sides thereof. An L-shaped table 50 is attached to the second frame plate 3.

A long hole 51 parallel to the spindle 32 is provided in the center of the table 50.
A saddle 60 is attached at any position and in any orientation along the. That is, the long plate-shaped saddle 60 is provided with the long hole 61 so that the long hole 51 and the long hole 61 are aligned with each other, and the bolt 6
The nut 63 is attached to the screw 2, and the tightening lever 64 fixed to the head of the bolt 62 is rotated to fix the saddle 60. Note that 65a and 65b are spacers.

A cylindrical support body 66 is provided at one end of the saddle 60.
A columnar post 71 of a tool rest 70 is rotatably fitted into the support 66, and the post 71 is pressed by the tip of a tightening screw 68 mounted in a screw hole 67 of the support 66. By doing so, the column 71 can be fixed in any direction and at any height.

Therefore, the saddle 60 is moved along the long hole 51 of the table 50 and selected in an arbitrary direction, and further, the saddle 60 is moved in the direction along the long hole 61 of the saddle 60, and the tightening lever 64 is used. Saddle 60 table 50
Further, by fixing to the
By selecting the height of 1 and fixing it with the tightening screw 68, the tool rest 70 is positioned at an arbitrary position, height and direction.

3 and 4 show an embodiment in which the material to be processed is held at both ends. In this embodiment, in addition to the first and second frame plates 2 and 3, a third frame plate 8 is further provided.
0 is provided and these frame plates 2, 3, 80
Are fixed by two pipe-shaped frame shafts 81, 82, 83, 84 which are parallel to each other in the horizontal direction.

Two upper frame shafts 81, 82
A movable body 90 is slidably attached to the. The movable body 90 is formed by connecting two substantially triangular plate bodies 91 and 92 with a vertical plate 93 and a horizontal plate 94 below the plate 93, and insertion holes 95, 95, ... The frame shafts 81 and 82 are inserted through.

The bolts 97 are inserted into the round holes 96a of the elongated plate-like tightening plates 96 on the lower sides of the frame shafts 81 and 82 from the lower side.
Is further inserted through the screw hole of the cylindrical portion 94a of the horizontal plate 94 from below, and the tightening lever 98 fixed to the lower end of the bolt 97 is rotated to move the tightening plate 96 from below to the frame. The movable body 90 is fixed to the frame shafts 81 and 82 at arbitrary positions by pressing the shafts 81 and 82.

At the upper ends of the plate members 91 and 92, cylindrical members 100 and 101 having the same diameter are fixed so as to pass through the same axis as the spindle 32. Two cylinders 100, 1
01 with a conical portion 102a at one end
2 is slidably fitted in the axial direction.

A threaded surface 1 is provided on the outer periphery of the rear portion of the center shaft 102.
02b is provided, and a ring-shaped screw ring 103 having a threaded surface 103a on the inner peripheral wall is screwed to the center shaft 102, and is positioned closely in the gap between the two cylindrical bodies 100, 101. Therefore, when the screw ring 103 is rotated, the center shaft 102 moves in either axial direction in response to this. The cylindrical body 100 is provided with a screw hole, and the center shaft 102 can be fixed by the tip of a tightening screw 104 screwed into the screw hole.

Therefore, in order to hold the other end of the work piece held by one end of the spindle 32 by the center shaft 102, the moving body 90 is moved along the frame shafts 81 and 82 to operate the tightening lever 98. Then tighten plate 96
By fixing it to the frame shafts 81 and 82, rotating the screw ring 103, and pressing the conical portion 102a at the tip of the center shaft 102 against the other end of the workpiece to tighten the tightening screw 10.
At 4, the center shaft 102 is fixed.

The saddle 60 abuts on the upper sides of the upper two frame shafts 81 and 82, and is fixed by fastening the fastening plate 110 from the lower side of the frame shafts 81 and 82 with the fastening lever 64. Except for the above points, the embodiment of FIGS. 3 and 4 has the same configuration as the embodiment of FIG.

In the woodworking lathes of the embodiments shown in FIGS. 1 and 3, as shown in FIG.
A pipe 11 is fixed to the lower surface on one end side of the frame 11, and one frame shaft 8 is attached to the pipe 11 so as to be rotatable and axially movable. The motor base 10 and the pipe 11 are provided with a threaded hole 12 penetrating therethrough. By lightly tightening the tip of the tightening screw 13 to the frame shaft 8, the motor base 10 cannot move in the axial direction of the frame shaft 8, Rotation is possible.

On the other frame shaft 8, the pipe 1
4 is attached so as to be rotatable and axially movable. An ear piece 15 having a screw hole 15a is provided on the pipe 14 so as to project outward in the radial direction. On the other end side of the motor base 10, a protruding piece 16 is projected outward from the frame shaft 7.
The projecting piece 16 is provided with a hole 16a larger than the bolt 17 and smaller than the head 17a of the bolt 17. Bolt 17 inserted in this hole 16a
Is screwed into the screw hole 15a of the ear piece 15.

Therefore, the ear piece 15 of the pipe 14 is replaced by the pipe 1.
The motor base 10 can rotate counterclockwise (in the drawing) about the frame shaft 8 within a range in which the motor base 10 moves upward by the rotation of 4.

When the cutting edge is strongly caught on the workpiece during cutting and a sudden and strong load is applied to the rotation of the spindle 32, a strong load is applied to the belt 34 and a force in the direction opposite to the running direction of the belt is generated. But at this time, the protruding piece 1
The motor base 10 can be rotated counterclockwise about the frame shaft 8 until the abutment 6 contacts the head portion 17a of the bolt 17, and the pipe 14 is further rotated until the ear piece 15 reaches the upper side. By moving, damage and pain of the belt 34 are prevented.

[0025]

As described above, in the woodworking lathe that rotates the spindle by the belt spanned between the pulley attached to the drive shaft of the motor of the present invention and the pulley attached to the spindle, when the belt is impacted. Since the motor can be floated up to the spindle side, the work material and the spindle are temporarily stopped by the cutting edge of the work material while the work material is being cut by the tool, and the work material and the spindle are temporarily stopped, and a strong sudden impact is applied to the belt. Then, the motor floats to the spindle side to absorb this impact, and the belt is not damaged, damaged, broken, or extended.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention drawn in a partial cross section.

FIG. 2 is a perspective view of the embodiment.

FIG. 3 is a front view of another embodiment of the present invention with a partial cross section.

FIG. 4 is a perspective view showing a main part of the embodiment of FIG.

FIG. 5 is a side view with a partial cross section showing how the motor is mounted in the embodiment of FIGS. 1 and 3;

[Explanation of symbols]

 2 1st frame board 3 2nd frame board 10 Motor base 16 Projecting piece 17 Bolt 20 Motor 32 Spindle 37 Shaft hole 37a Inclined part 38 Opening 40 Cover 50 Table 51 Long hole 60 Saddle 64 Tightening lever 70 Turret 80 80th 3 frame plate 81, 82, 83, 84 frame shaft 90 moving body 102 center shaft 104 tightening screw

Claims (1)

[Claims] 1. A woodworking lathe in which a spindle is rotated by a belt spanned between a pulley attached to a drive shaft of a motor and a pulley attached to a spindle, wherein the motor can float to the spindle side when the belt is impacted. A woodworking potter's wheel that is characterized by