JPS586651Y2 - Planer with blade angle adjustment device - Google Patents

Description

[Detailed explanation of the idea] In planer shaving, in order to make the shaving rougher or finer, it is common to slide the plane blade and adjust the length of the cutting edge that comes out from the cut. It takes considerable skill to make the blade edge parallel to the cut and to produce the appropriate length evenly, and it is difficult for an amateur to do so.The applicant therefore proposed a planer blade angle adjustment using a screw pestle based on a different principle. The device was filed in 1975 as Utility Application No. 72899 (Utility Model Publication No. 16874, 1975).

However, since this device uses the same flat planer blade as the conventional one, it is necessary to hold the entire planer blade at a steep angle in order to secure the necessary blade angle for planing. It is structurally impossible to provide a push spring to support this and a screw punch accommodating part for adjusting the blade angle in front of the cut end and shavings discharge port of the plane table, so the plane table is placed in front and behind the plane blade. It is not possible to form a sliding surface, which may reduce work efficiency and reduce precision in the cutting process.

In addition, in this device, the cutting edge in contact with the contact surface is supported only by the elasticity of the push spring on the head side, which uses the screw punch as a fulcrum, so if strong scraping resistance is applied to the cutting edge, the cutting edge will float and touch the contact surface. There is a risk that shavings may enter the gaps between the parts, which greatly impedes efficiency, and there is a need to improve these defects.

The present invention is an attempt to eliminate the above-mentioned defects of the conventional planer, and a recess 3 is provided on the lower surface of the planer stand 1 to communicate the rear end with the cut 2. Part 5
A planer blade 6 whose cutting edge 7 is bent significantly downward is fitted through a wide leaf spring 4 provided with a
A screw punch 9 for adjusting the blade angle is passed through the plane blade 6, the plate spring 4 and the plane table 1, and the head 10 of the screw punch 9 is used to lock the plane blade 6 and the plate spring. A nut 11 is screwed onto the other end of the screw punch 9 on a planer stand 1, and the blade angle of the planer blade 6 is adjusted by the degree of tightening of the nut 11. The purpose of this planer is to provide a plane with high cutting accuracy and efficiency, no intrusion of swarf, easy to sharpen, and accurate and easy adjustment of the blade angle. be.

To explain the embodiment of the present invention in detail with reference to the drawings, reference numeral 3 denotes a shallow recess provided on the lower surface of the planer table 1, the bottom surface of which is gently sloped backward, and the rear end serves as a cut and shavings discharge port 2. A planer blade 6 is fitted into the recess 3 via a plate spring 4, and each fitting hole 12 of the planer blade 6, plate spring 4, and planer stand 1 is connected to the recess 3.
A screw punch 9 is inserted through it from below, the planer blade 6 and leaf spring 4 are supported by the head 10 of the screw rod 9, and a nut 11 is screwed onto the other end of the screw punch 9 on the planer stand 1. By tightening the nut 11, the planer blade 6 and the leaf spring 4 are pressed against the bottom surface of the recess 3, and the angle of the planer blade 6 is adjusted by the degree of tightening of the nut 11, in combination with the elasticity of the leaf spring 4. Is the front end of the planer blade 6 11
is in contact with the wall surface of the recess 3 and serves as a fulcrum when adjusting the blade angle with the screw punch 9.

The planer blade 6 is installed in the shallow recess 3 on the bottom surface of the planer table 1. Conventional flat planer blades have a gentle angle and cannot secure the necessary blade angle for planing, but in the present invention, the blade edge 7 is Even if the planer blade 6 itself is at a gentle angle due to a large bend downward, the cutting edge 7
By adopting the planer blade 6 with the refracted cutting edge 7, the planer blade 6 can be used for the first time on the underside of the planer table 1. The planer blade 6 can be mounted on the blade 6, and a sliding surface can be formed on the front and rear of the planer blade 6.

Incidentally, the bent cutting edge 7 has the advantage of significantly reducing the area to be ground on the cutting surface, especially the back surface, thereby improving the grinding efficiency.

The planer blade 6 is supported by the leaf spring 4, but the fulcrum of the planer blade 6 is locked to the wall surface of the recess 3 at the front end katana 8, or the rear end of the leaf spring 4 is raised at a position close to the bent blade edge 7. 5, even if large cutting resistance is applied to the cutting edge 7, there is little room for a gap to form between the two, and the elasticity of the raised portion 5 of the leaf spring 4 is strong, and the response is quick. Therefore, there is almost no fear of shavings entering the gap, and the shavings cut by the cutting edge 7 slide smoothly along the raised portion 5 of the leaf spring 4 and are discharged from the cut end and shavings discharge port 2. .

As described above, the plane with the blade angle adjustment device according to the present invention employs the plane blade 6 in which the blade edge 7 is bent downward.
A sliding surface on the lower surface of the planer table 1 can be formed before and after the planer table 1, improving cutting accuracy, and the top surface of the planer table 1 is smooth and easy to work with, and there is no fear of shavings entering the gap between the planer blades 6. It greatly improves cutting efficiency,
In addition, the sharpening area of the planer blade 6 is significantly reduced, which has the advantage of reducing polishing time.Furthermore, the blade angle of the planer blade 6 can be freely adjusted by tightening the nut 11 screwed into the screw punch 9. Anyone can freely adjust the cutting method to make it coarser or finer, which is a great benefit to the industry.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a plan view, Fig. 2 is a bottom view, Fig. 3 is a vertical sectional view, Fig. 4 is a perspective view of the planer blade 6, and Fig. 5 is a plan view. 1 is a perspective view of a leaf spring 4. FIG.

Claims (1)

[Scope of utility model registration request] A recess 3 is provided on the lower surface of the planer table 1, the rear end of which communicates with the cutting/shaving/scrape discharge port 2, and the fourth part 3 is provided with a wide leaf spring 4 having a raised part 5 at the rear end. The planer blade 6 with the cutting edge 7 bent significantly downward is fitted, the front end holder 8 is brought into contact with the wall surface of the recess 3 and locked, and the screw pestle 9 for adjusting the blade angle is inserted between the planer blade 6, the leaf spring 4 and The planer blade 6 and the leaf spring 4 are passed through the planer stand 1, and the head 10 of the screw pestle 9 is used to remove the planer blade 6 and the leaf spring 4.
The blade angle adjusting device is characterized in that a nut 11 is screwed onto the other end of the screw punch 9 on a planer stand 1, and the blade angle of the planer blade is adjusted by the degree of tightening of the nut 11. Tsukikanna.