JPH0430004Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a blade height adjustment device for a super finishing planer.

[Background of the idea]

In the conventional blade height adjustment device, as shown in FIG. 3, grooves into which rod-shaped wedge bodies 13 are fitted are provided in the mounting surface 6 formed on the blade holder 5 from both sides in the longitudinal direction of the blade holder. There is one in which a plane blade is attached to the mounting surface 6 via an elastic body 12. In the case of the blade height adjusting device having the above structure, the blade height is adjusted by moving the wedge body 13 laterally along the groove and bending the elastic body 12 to move the plane blade in and out. Therefore, if the elastic body 12 is adjusted beyond its elastic limit during adjustment, the elastic body 12 will be permanently deformed, making adjustment impossible. In addition, not only during adjustment, but also during cutting, the cutting resistance generated during cutting may permanently deform the elastic body 12, resulting in poor operability and decreased precision, which significantly deteriorates the finished surface of the cut material. I was letting it happen. Furthermore, when replacing the permanently deformed elastic body 12, the elastic body 12 is processed with high precision and is very expensive, so it lacks practicality.

Therefore, as a method for reducing the above-mentioned drawbacks, Japanese Utility Model Application No. 11789/1983 discloses a method in which a worm and a worm wheel are used to adjust the blade height. An example of this is shown in FIG. Front blade 1 with the cutting edges aligned
and the back blade 2 are fixed with bolts 3, and the front blade 1 and the back blade 2 are attached to the mounting surface 6 of the blade holder 5 with bolts 4. The head of an adjustment screw 8 is engaged with a lateral groove 7 provided in the lower part of the back blade 2 in the longitudinal direction of the blade. Further, the adjustment screw 8 is screwed into the inner peripheral part of a worm wheel 10 which is held by a stopper 9, and the outer peripheral part of the worm wheel 10 is a worm supported rotatably from the outer part of the blade holder 5. The shafts 11 engage.

With the above configuration, by rotating the worm shaft 11, the adjustment screw 8 is moved up and down in an oblique direction via the worm wheel 10, thereby adjusting the blade height. In the case of this configuration, the front blade 1 and the back blade 2 have a groove in order to ensure that the cutting edges are in close contact with each other, so the tightening force of the bolt 3 cannot be increased too much. For this reason, the tightening force of the bolt 4 becomes relatively large, and only the back blade 2 provided with the lateral groove 7 moves, making it difficult to adjust the position of the front blade 1 in practice. Bolt 4 when adjusting the blade edge position
It is difficult to manage the tightening force. In addition, since the worm wheel 10 is held between the stoppers 9, there is play in the direction of adjustment of the cutting edge position, and when actual adjustment is performed, the worm shaft 11 must be rotated many times. The work was time consuming and it was not possible to make accurate adjustments. Furthermore, since the adjustment work can only be done from one side of the blade holder 5, if the adjustment part is moved to the rear side due to the installation direction of the machine, the blade holder 5 must be rotated each time the adjustment is made.
Workers had to go around to the rear of the machine to make adjustments, reducing operability and efficiency.

[Purpose of invention]

The purpose of this invention is to eliminate the drawbacks of the prior art described above, improve the blade height adjustment mechanism, improve operability,
This is to improve accuracy and reduce costs.

[Summary of the idea]

The present invention provides two worm wheels and two worm shafts at two locations behind the plane blade, and by supporting the two worm shafts on both sides of the blade holder, it is possible to access the blade from either side of the blade holder. Focusing on the ability to adjust the height of the left and right blades, the design was designed to improve operability.

[Example of idea]

Examples of the present invention are shown in FIGS. 1, 4, and 5. FIG. 4 is a front view of the main body, FIG. 1 is a cross-sectional view of the knife holder of the present invention, and FIG. 5 is a longitudinal sectional view of the knife holder of the present invention. In the figure, a table 15 having a circular groove in the center is provided on the upper part of the frame 14,
A turntable 16 is rotatably fitted into the circular groove, and a blade holder 5 is removably attached to the turntable 16. Said table 15
A column 17 is fitted into the column 17, and a head 19 that can be raised and lowered by a feed screw 18 is fitted to the column 17.
engage. The head 19 is provided with a material conveying belt 20 which is rotatable by a reversible electric motor and power transmission means (not shown). A blade opening 21 is formed in the center of the blade holder 5, a sloped blade attachment surface 6 is provided on one side, and a blade base 22 is attached to the other side. The front blade 1 and the back blade 2 have their cutting edges aligned, are connected by a bolt 3 with an appropriate tightening force, and are attached to the blade mounting surface 6 by a countersunk spring 23 and a stepped bolt 24 with an appropriate pressing force. Said front blade 1
A lateral groove 7 is provided in the worm wheel 10, and two adjusting screws 26 whose heads engage with the lateral groove 7 and are prevented from rotating by a guide surface 25 are screwed into the two worm wheels 10, respectively. let The worm wheel 10 is rotatably supported by an adjuster nut 27 without play. Two worm shafts 11 which engage with the two worm wheels 10, respectively, are rotatably supported by adjuster nuts 28 from both sides of the blade holder 5 without play. Minus grooves 2 are provided on both end surfaces of the worm shaft 11.
9 is provided, and the worm shaft 11 can be rotated by inserting a flathead screwdriver or the like into the hole of the adjuster nut 28.

In the above configuration, by rotating the worm shaft 11 from the outside of the blade holder 5 using a flathead screwdriver or the like and moving the adjusting screw 26 by a small amount via the worm wheel 10, it is possible to accurately adjust the position of the cutting edge of the front blade 1. becomes. Furthermore, the two worm wheels 10 provided at the rear on both sides of the front blade 1 and the two worm shafts 11 supported on both sides of the blade holder 5 reverse the cutting direction and rotate the turntable 16. However, it is possible to adjust the blade height on the left and right sides. Further, since the cutter with its cutting edges aligned is attached to the cutter mounting surface 6 by the flat spring 23 and the stepped bolt 24, it can be attached with a constant pressing force with easy operation.

[Effect of idea]

According to the present invention, the rotational movement of the worm shaft when adjusting the blade height of the plane blade is immediately linked to the movement in and out of the plane blade,
Fine blade height adjustments can be made quickly, improving work efficiency when adjusting the blade height.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of the knife holder of the present invention, Figure 2 is a cross-sectional view of a conventional blade holder that adjusts the blade height using a worm shaft and worm wheel, and Figure 3 is a conventional elastic body and wedge. FIG. 4 is a front view of the main body of the present invention, and FIG. 5 is a longitudinal cross-sectional view of the knife holder of the present invention. In the figure, 1 is the front blade, 2 is the back blade, 3 is the bolt, 4 is the bolt, 5 is the blade holder, 6 is the mounting surface,
7 is a horizontal groove, 8 is an adjustment screw, 9 is a stopper, 10 is a worm wheel, 11 is a worm shaft, 12 is an elastic body, 13 is a wedge body, 14 is a frame, 15 is a table, 16 is a turntable, 17 is a Column, 18
is a feed screw, 19 is a head, 20 is a material conveying belt, 21 is a blade mouth, 22 is a blade mouthpiece, 23 is a flat spring, 24 is a shoulder bolt, 25 is a guide surface, 2
6 is an adjusting screw, 27 is an adjusting nut, 28 is an adjusting nut, and 29 is a minus groove.

Claims (1)

[Scope of utility model registration request] On the table of the frame, a head having a material conveying belt driven by a motor is supported by a column so as to be able to move up and down, the table is provided with a turntable having a cutter holder, and the cutter holder is provided with a front cutter and a back cutter. In a super-finishing planer equipped with a planer blade made of The worm wheels are each screwed into the inner periphery of two worm wheels whose one end is rotatably supported by an adjusting nut provided on the protrusion of the holder, and two worm shafts are engaged with the outer periphery of the two worm wheels. A super finishing plane characterized in that one end of the worm wheel is rotatably supported by an adjuster nut provided on a protrusion of the blade holder, and the worm shaft is rotatable from both sides of the blade holder. Blade height adjustment device on the board.