JPH1177606A - Automatic planing and moulding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable adjustment of the height of an elevating body at left and right hand thereof through a simple construction and operation. SOLUTION: A bevel gear 21 adapted to mesh with a bevel gear 20 at a lower end of a screw shaft 6 and a ball bearing 24 are mounted on a small diameter portion 13b protruding into a gear box 3 on the other side of a driving shaft 13, and a bearing box grabbing the ball bearing 24 is fixed to the bear box 3 with a hexagon head bolt 27. In adjusting the height of a head 7 at left- and right-hand corners, the driving shaft 13 can be slidingly moved to release the meshing engagement of the bevel gear 21 only when the hexagon head bolt 27. Thus, if the driving shaft 13 continues to be rotated in that situation, only a bevel gear 15 can be rotated and only a screw shaft 9 on the left-hand side can be threadingly fed for adjustment of the inclination of the head 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic plane machine for transmitting the rotation of a drive shaft to a pair of screw shafts screwed to an elevating body via a bevel gear transmission mechanism to move the elevating body up and down. is there.

[0002]

2. Description of the Related Art In a conventional automatic plane machine, a pair of screw shafts are erected on both sides of a main body so as to be rotatable, and an elevating body which can move up and down on the main body is screwed to the screw shaft. The two screw shafts are each connected to a drive shaft that is horizontally mounted on the main body via a bevel gear transmission mechanism, and the two drive shafts are rotated by controlling the rotation of the drive shaft by a motor or manually. The lifting body is moved up and down by screw feed. However, in such an automatic plane machine, the phase adjustment of the left and right bevel gears must be performed at the time of assembly, and the assembly is troublesome, and if the phase adjustment is not accurate, the rotation angle of both screw shafts is required. Is changed, the height of the screw portion of the elevating body with the screw shaft is different between left and right, and there is a problem that the elevating body is inclined. Therefore, in Japanese Utility Model Publication No. 3-7122,
At least one of the bevel gears provided on the drive shaft side is slidably provided in the axial direction, and is normally fixed to the drive shaft by a key and a retaining ring, and after assembly, the phase of the left and right bevel gears is shifted. If this occurs, remove the retaining ring and slide the bevel gear to temporarily disengage with the bevel gear on the screw shaft side, and rotate only the free screw shaft to correct the inclination of the elevating body. The invention is disclosed.

[0003]

However, in the technique disclosed in the above-mentioned publication, the bevel gear is slid inside the guide member to disengage the bevel gear. Adjustment cannot be performed, which takes time and reduces workability during assembly. In addition, in order to slide the bevel gear with respect to the drive shaft, many extra configurations such as formation of an annular groove in the drive shaft, addition of a retaining ring, and a key are required, and the cost is increased.

Accordingly, an object of the present invention is to provide an automatic planer capable of adjusting the height of an elevating body with a simple structure and a simple procedure without impairing workability during assembly. It is intended.

[0005]

In order to achieve the above object, according to the present invention, one of the bevel gears provided on the drive shaft of the pair of bevel gear transmission mechanisms is provided with one of the bevel gears. While the engagement state is maintained, only the rotation is loosely and integrally fitted to the drive shaft, while the drive shaft is slidably provided in the axial direction, and further, at least one end of the drive shaft on the outer surface of the main body. On the side, a closing portion for restricting slide of the drive shaft by fixing to the outer surface of the main body is detachably provided, and by releasing the fixing of the closing portion, sliding operation of the drive shaft from the outer surface of the main body is enabled. It is characterized by the following. According to a second aspect of the present invention, in addition to the object of the first aspect, in order to reasonably configure the closing portion, the closing portion is provided with a bearing portion which supports the end of the drive shaft. It was done.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall explanatory view of the automatic plane machine 1,
FIG. 2 is a partial explanatory view of the lower part of the bed 2. Gear boxes 3, 3 are fixed on both sides of the lower part of the bed 2 so as to project, and are mounted on bearing holders 4, 4 fixed on the upper parts of the gear boxes 3, 3. , Thrust ball bearings 5,5 respectively
The screw shafts 6, 6 are rotatably provided vertically through the shaft. on the other hand,
Above the bed 2, a head 7 having an inverted U-shaped cross section is disposed so as to cover the upper surface and the left and right side surfaces of the bed 2, and nut portions 9, 9 fixed to the left and right end portions 8, 8 of the head 7, respectively.
However, the head 7 is supported by being screwed to the screw shafts 6 and 6, respectively. Reference numerals 10 and 10 denote upwardly retaining pins fitted to the screw shafts 6 and 6, respectively, 11 denotes a material feed roller provided on the bed 2, and 12 denotes a motor and a belt transmission mechanism (not shown). It is a plane blade whose rotation is controlled by. Also, FIG.
As shown in FIG. 2, a drive shaft 13 is horizontally hung below the bed 2, and a small diameter portion 13 a formed on one end side (left side in FIGS. 1 and 2) is supported by a ball bearing 14. A bevel gear 1 which projects into the gear box 3 and meshes with the bevel gear 15 fixed to the lower end of the left screw shaft 6 in the gear box 3 at right angles from the right side.
6 and a sleeve 17 interposed between the bevel gear 16 and the ball bearing 14 for restricting the slide of the bevel gear 16 are loosely inserted. The bevel gear 16 and the drive shaft 13 are integrally rotated only by a key 18, and a recessed portion 17 a on the inner periphery of the sleeve 17 which allows the key 18 to enter by sliding the drive shaft 13, which will be described later.
Is provided around.

On the other hand, on the other end side (right side in FIGS. 1 and 2) of the drive shaft 13, a bevel gear 20 fixed to the lower end of the right screw shaft 6 is attached to the small diameter portion 13 b at the tip protruding into the gear box 3. Bevel gear 21 that meshes orthogonally from the right
However, the small-diameter portion 13b has a bearing box 2 serving as a closing portion.
3 is supported by a ball bearing 24 that is gripped. The ball bearing 24 is prevented from falling off by a flat washer 25 and a hexagonal bolt 26 attached to the small diameter portion 13b. Therefore, the bearing box 23 is fitted with the insertion portion 23a, which is slightly smaller, into the square hole 3a on the side of the gear box 3, and the hexagon bolts 27, 27.
By fixing to the gear box 3 by means of
3b and the slide regulation of the bevel gear 21 are maintained. A lifting motor 28 is disposed in the bed 2 in parallel with the drive shaft 13, and a belt wound between a sprocket 29 fixed to the motor shaft and a sprocket 30 fixed to the drive shaft 13. By 31
The rotation of the lifting motor 28 can be transmitted to the drive shaft 13. Above the nuts 9, 9, cylindrical covers 32, 32 for protecting the screw shafts 6, 6 are provided, respectively. Below the nuts 9, 9, bearing covers 4, 4 are provided. The bellows 33 are connected between them.

In the automatic plane machine 1 configured as described above, when the drive shaft 13 is rotated by the drive of the elevating motor 28, the bevel gears 16 and 21 at both ends rotate in synchronism.
The bevel gears 15 and 20 on the side of the screw shafts 6 and 6 meshing with each other are rotated, and the screw shafts 6 and 6 are synchronously rotated. Due to the rotation of the screw shafts 6, 6, the nuts 9, 9 are screwed in the axial direction, and the head 7 integrated with the nuts 9, 9 moves up and down. When the nuts 9 and 9 are out of synchronization and the head 7 is tilted when assembling the automatic plane machine 1 or during use after assembling, the hexagon in the gear box 3 on the right side in FIG. When the bolts 27 are removed and the fixing of the bearing box 23 to the gear box 3 is released, the drive shaft 13 is moved rightward together with the bearing box 23, the ball bearing 24, and the bevel gear 21 as shown in FIG. Pull and slide, bevel gear 2
1 can be disengaged from the bevel gear 20 on the screw shaft 6 side. At this time, on the left side of the drive shaft 13, the key 1
8 is allowed to slide into the recessed portion 17a, but the slide of the bevel gear 16 is restricted by the sleeve 17 and the engagement of the bevel gear 16 with the key 18 cannot be released. , The bevel gears 15,1 here
The meshing of the six is maintained. Therefore, if the drive shaft 13 is rotated as it is, only the bevel gear 15 rotates and only the left screw shaft 9 can be screwed forward (or the drive shaft 13 is left as it is and the right screw shaft 9 becomes free). Axis 9
By rotating only the head 7), the inclination of the head 7 can be corrected.

When the inclination of the head 7 is eliminated, the drive shaft 13
With bearing box 23, ball bearing 24
Into the bed 2 and bevel gears 20, 21
When the members are engaged with each other and the bearing box 23 is fixed with hexagon bolts 27, 27,... The insertion part 2 of the bearing box 23
The length in the sliding direction at 3a is the bevel gear 20,
Since the length is set longer than the stroke necessary for releasing the meshing between the shafts 21, the sliding operation of the drive shaft 13 does not shake the shaft center, and the sliding and rotating operation can be performed stably. As described above, according to the above-described embodiment, the height of the head 7 can be easily corrected from the outside of the bed 2 by simply removing the hexagon bolts 27, 27,. Even if the head 7 is assembled with a register and the height is adjusted after assembling, it can be performed quickly with good workability. In addition, since the height adjustment does not require many special processes and parts, the cost increase by adopting these structures can be minimized. In particular, here, since the closing portion is also used as the bearing box 23, the mounting of the bearing box 23 provides a rational configuration in which the bearing of the drive shaft 13 and the slide restriction are simultaneously completed.

In the above embodiment, the drive shaft 13 is pulled to release the engagement between the bevel gears. However, the engagement between one of the bevel gears is released by the pushing operation of the drive shaft 13 which becomes free by releasing the closing portion. The closing portion may be provided at both ends of the drive shaft 13 without any problem. Also, the closing portion is not used as the bearing box 23 serving as a bearing portion, and the bearing of the drive shaft 13 is connected to the bevel gear 2.
1 may be provided as a plate that simply provides a function of simply restricting the slide of the drive shaft 13 and that exposes the end 13 b of the drive shaft 13 when removed from the gear box 3. Further, the present invention, as described in the prior art, if the automatic plane machine provided with a drive shaft that synchronizes the rotation of the left and right screw shafts via a pair of bevel gear transmission mechanisms, A head mounted above a bed with a built-in head, or a head driven up and down manually by controlling the rotation of a drive shaft by operating a handle can be similarly employed.

[0011]

According to the first aspect of the present invention, the height of the elevating body can be adjusted by simply sliding the drive shaft from the outside of the main body only by attaching / detaching the closing portion. Therefore, even if the automatic planer is assembled without first considering this height adjustment, and then the adjustment is performed, the work can be quickly performed with good workability. Also, there is no need for special processing or many parts for height adjustment, so that there is no cost. According to the second aspect of the invention, in addition to the effect of the first aspect, the closing portion is also used as a bearing portion of the drive shaft, so that the bearing and the slide of the drive shaft can be restricted by being mounted on the outer surface of the main body. Is a reasonable configuration to be completed at the same time.

[Brief description of the drawings]

FIG. 1 is an overall explanatory view of an automatic plane machine.

FIG. 2 is an explanatory diagram of a drive shaft portion.

FIG. 3 is an explanatory diagram showing a state where a drive shaft is slid.

[Explanation of symbols]

1. Automatic plane machine, 2. Bed, 3. Gear box,
6. Screw shaft, 7. Head, 9. Nut part, 13.
.Drive shafts, 15, 16, 20, 21 ..Bevel gears, 2
3 ・ ・ Bearing box 、 27 ・ Hexagon bolt 、 28
..Elevating motors.

Claims (2)

[Claims] A pair of screw shafts screwed to the elevating body, a drive shaft provided between the screw shafts, and a drive shaft provided between the drive shaft and each of the screw shafts. An automatic plane machine comprising a pair of bevel gear transmission mechanisms capable of transmitting rotation of a drive shaft to the screw shaft, respectively, wherein one of the bevels provided on the drive shaft in the pair of bevel gear transmission mechanisms. The gear is loosely and integrally fitted only to the drive shaft while keeping its meshing state, while the drive shaft is provided so as to be slidable in the axial direction, and further, at least one of the drive shaft on the outer surface of the main body. On one end side, a closing portion for restricting slide of the drive shaft by fixing to the outer surface of the main body is detachably provided, and when the fixing of the closing portion is released, a sliding operation of the drive shaft from the outer surface of the main body is performed. It is characterized by being able to Dynamic planer. 2. The automatic plane machine according to claim 1, wherein the closing portion is a bearing portion that supports the end of the drive shaft.