JP2561102Y2 - Elevating device on planer board - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting device for vertically moving a surface plate or a cutting head of a planer.

[0002]

2. Description of the Related Art A conventional lifting device will be described with reference to FIG. Two parallel lifting screws 8 are pivotally supported on the surface plate 2 and are screwed to the base 1. Driven bevel gears 9 and 10 are provided at one end of the lifting screw 8, and are fitted with drive bevel gears 12 and 13 at both ends of the transmission shaft 11. A handle 17 is fixed to one end of the transmission shaft 11, and the lifting screw 8 rotates by the rotation of the handle 17, and the platen 2 moves up and down.

[0003]

In the conventional lifting device, the amount of bag lash between the driven bevel gear 9 and the driving bevel gear 12 and the driven bevel gear 10 and the driving bevel gear 13 which are the connecting portions between the lifting screw 8 and the transmission shaft 11 are respectively left and right. Due to the difference, the rotation of the left and right elevating screws 8, 8 associated with the rotation of the transmission shaft 11 is not synchronized, and the platen 2 is tilted. In addition, due to the non-synchronization, the parallelism between the surface plate 2 and the planer blade 5 is deviated, and when the work material is cut, the right and left thicknesses and dimensions are deviated, thereby deteriorating the processing accuracy. The purpose of the present invention is to synchronize the rotation of the left and right lifting screws,
The aim is to improve the processing accuracy of the processed material .

[0004]

Means for Solving the Problems The above object is achieved on a base.
The surface plate for supporting the materials provided, opposed to the cutting head having a planing cylinder and Okuzai device having a planer blade to the surface plate to the base, driven in the plate is disposed at one end bevel gear The lifting screw is pivotally supported, the other end of the lifting screw is screwed into the female thread portion of the base , and a transmission shaft having a drive bevel gear meshing with the driven bevel gear is provided at both ends to form a lifting device. In this case, the surface plate is provided with an adjusting screw for adjusting the drive bevel gear so as to mesh with the driven bevel gear, and one drive bevel gear is fixed to the transmission shaft. The other drive bevel gear is fitted so as to be slidable in the axial direction, and is achieved by urging the other drive bevel gear to the non -meshing side by a spring. or
Is provided with a surface plate for supporting the material on the base, and on the surface plate
Cutting f having a or I a cylinder and Okuzai device having a planer blade
The base is provided facing the surface plate, and the base is provided at one end.
Supporting multiple lifting screws with driven bevel gears
Then, the other end of the lifting screw is screwed into the female thread of the cutting head.
And a drive bevel gear that meshes with the driven bevel gear at both ends.
By forming a lifting shaft by providing a transmission shaft with
In a planer that allows the cutting head to move up and down,
The drive bevel gear is driven by a driven bevel gear on the outer circumference of the transmission shaft.
With an adjustment screw adjusted to mesh with
The moving bevel gear is fixed to the transmission shaft, and the other driving bevel
The gear is fitted slidably in the axial direction, and another
By biasing one of the drive bevel gears to the anti-meshing side.
Is achieved.

[0005]

The backlash adjusting mechanism constructed as described above pushes the fixed drive bevel gear from the back side of the tooth surface with an adjusting screw, so that the drive bevel gear moves integrally with the transmission shaft and is adjusted to a proper backlash. . Opposite drive
As with the fixed side, the moving bevel gear is pushed out by the adjusting screw, but the transmission shaft does not move, and only the driving bevel gear moves. The transmission shaft and the drive bevel gear are connected via a spring by the urging force of the spring. The adjustment amount at this time is the compression amount of the spring, and is converted into a pressing load of the driving bevel gear. Therefore, the movement of the transmission shaft in the axial direction after the adjustment of the backlash is suppressed.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG. FIG. 1 shows an automatic planer of a table-plate elevating type. In the figure, a guide member 3 for elevating and lowering a surface plate 2 is provided on a base 1 so that the surface plate 2
Is fitted. The cutting head 4 is fixed to the upper end of the guide member 3. The cutting head 4 is provided with a planer cylinder 6 having a planer blade 5 and material feeding devices 7 before and after the planer cylinder 6. The platen 2 supports one end of two vertically moving screws 8, 8 parallel to each other in the vertical direction, and a female screw portion 1 formed on the base 1.
The driven bevel gears 9 and 10 are fixed to one end of each of the lifting screws 8. The rotation of the two lifting screws 8 is transmitted by a transmission shaft 11 provided in the base 2 and drive bevel gears 12 and 13 disposed at both ends of the transmission shaft 11. The drive bevel gear 12 is fixed to the transmission shaft 11 while meshing with the driven bevel gear 9, and the drive bevel gear 13 is connected to the transmission shaft 11 movably in the axial direction while meshing with the driven bevel gear 10, and the transmission on the drive bevel gear 13 side The drive bevel gear 13 is urged by a spring 14 attached to one end of the shaft 11 to the anti-meshing side (to the right in FIG. 1). Further, on the outer periphery of the transmission shaft 11, adjustment screws 15, 15 screwed to the platen 2 are provided, and the adjustment screw 15 is rotated and moved in the left-right direction, thereby being driven in conjunction with the adjustment screw 15. The bevel gears 12 and 13 are extruded toward the driven bevel gears 9 and 10, and after setting, the adjustment screw 15 is fixed with a nut 16. The transmission shaft 11 is connected to a manual handle (not shown) or an electric motor, and transmits rotational power to the lifting screw 8. In the above configuration, the amount of backlash between the driven bevel gears 9 and 10 and the driving bevel gears 12 and 13 differs from each other due to assembly errors and variations in processing accuracy of parts. Therefore, first, the backlash adjustment is performed while pushing the drive bevel gear 12 on the fixed side toward the driven bevel gear 9 with the adjustment screw 15.
Next, the backlash adjustment of the driving bevel gear 13 on the moving side is performed. In this case as well, the driving bevel gear 13 is pushed out to the driven bevel gear 10 by the adjusting screw 15 similarly to the fixed side. However, the transmission shaft 11 does not move, and only the drive bevel gear 13 moves. At this time, the drive bevel gear 13
The amount of movement of the spring 14 is converted into the amount of compression of the spring 14 by the urging force of the spring 14, and the transmission shaft 11 and the drive bevel gear 13
4 is deterred. Therefore, after the adjustment, the drive bevel gear 13 and the transmission shaft 11 are integrally engaged with each other, so that the movement of the transmission shaft 11 in the axial direction is suppressed, and the transmission shaft 11 is fixed to the base 2. This allows the right and left lifting screws to move with the rotation of the transmission shaft 11.
The rotation of 8, 8 is synchronized, and the parallelism between the surface plate 2 and the planer blade 5
Is maintained, and the platen 2 moves up and down smoothly.
The thickness and dimensions on the right are always constant. Next, another embodiment will be described with reference to FIG. FIG. 2 relates to an automatic planing machine of a cutting head 4 elevating type, and a surface plate 2 on which a material is placed.
One end of two lifting screws 8 is pivotally supported on the base 1 having a screw shaft, and is screwed into a female thread formed on the guide member 3 of the cutting head 4. , 10 are fixed. The rotation of the two lifting screws 8 is transmitted by a transmission shaft 11 provided in the base 1 and drive bevel gears 12 and 13 provided at both ends of the transmission shaft 11. Other configurations are the same as those of the surface plate 2 elevating type.

[0007]

According to the present invention, since the backlash of the meshing portion of the bevel gear of the elevating device can be adjusted, the rotation of the left and right elevating screws is synchronized, so that the elevating operation is smooth, and at the same time, the plane plate and the plane are fixed. Since the parallelism of the blade is also maintained, high processing accuracy can be obtained.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a front view showing an embodiment of the present invention in a cutting head elevating type.

FIG. 3 is a front view showing a conventional technique.

[Explanation of symbols]

1 is a base, 2 is a surface plate, 4 is a cutting head, 5 is a planer blade, 6 is a planer trunk, 7 is a material feeder, 8 is a lifting screw, 9,
10 is a driven bevel gear, 11 is a transmission shaft, 12 and 13 are drive bevel gears, 14 is a spring, and 15 is an adjusting screw.

Claims (2)

(57) [Scope of request for utility model registration] A platen for supporting a material is provided on a base,
Provided a cutting head having a planing cylinder and Okuzai device having a planer blade to the surface plate opposite to the surface plate, a plurality of which has a driven bevel gear which is disposed on one <br/> end to said platen The lifting screw is pivotally supported, the other end of the lifting screw is screwed into the female thread portion of the base , and a transmission shaft having a drive bevel gear meshing with the driven bevel gear is provided at both ends to form the lifting device. In a planer board in which the surface plate can be moved up and down, an outer peripheral portion of the transmission shaft is provided with an adjusting screw for adjusting the drive bevel gear to mesh with a driven bevel gear side, and one drive bevel gear is fixed to the transmission shaft, and the other is fixed to the transmission shaft. The drive bevel gear is fitted slidably in the axial direction, and another
A lifting device for a planing board, wherein one of the drive bevel gears is biased toward the non -meshing side. 2. A base plate for supporting a material is provided on a base,
Opposed to the cutting head plate having a Okuzai device and planing cylinder having a planer blade to the surface plate, a plurality of lifting with the driven bevel gear in the base which is arranged to <br/> end The cutting head is formed by supporting a screw, screwing the other end of the lifting screw into a female thread portion of the cutting head, and providing a transmission shaft having a drive bevel gear meshing with the driven bevel gear at both ends to form a lifting device. In the planer board capable of moving up and down, the outer peripheral portion of the transmission shaft is provided with an adjusting screw adjusted so that the drive bevel gear meshes with the driven bevel gear side,
One of the driving bevel gear is fixed to the transmission shaft, the other driving bevel gear is slidably fitted in the axial direction, Planer, characterized in that urges the other driving bevel gear to the counter-engagement side by a spring Elevating device.