JPH0339202Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention relates to a chamfering plane mainly used for processing the edges of plasterboards and new construction materials, and in particular, for chamfering planes that are thin like the spare blades of cutters. This is an invention related to a replaceable blade type chamfering plane that utilizes.

[Conventional technology]

The general structure of conventional planes is that a relatively thick plane body (blade body) is fitted into a groove in the plane stand, with the cutting edge protruding from the blade mouth to the bottom surface. With a single-blade plane, the blade was held in place by the frictional force of inserting it into the groove, and with a two-blade plane, a presser metal was pushed between the blade and the push rod to press the blade. In any case, conventional planes use thick-walled planes and are always sharpened accurately.

In addition, only the cutting edge of the plane blade is separate, making handling such as polishing easier.

[The problem that the idea aims to solve]

With conventional planes, it is by no means easy to polish the plane blade and keep it in optimal condition.

In recent years, various types of gypsum boards and new construction materials have been used as construction materials. These materials differ in hardness and machinability from wood, so conventional expensive planes do not necessarily work well when processing their edges.
In addition, the blade was damaged and was virtually unusable. In view of these points, we have devised a replaceable blade type chamfering plane that is sharper, has excellent cutting performance, and has a simple structure in which thin blade plates, which are supplied at low cost, can be replaced as appropriate.

[Means to solve the problem]

The back surface of the planer stand 1 is provided with notches 2 that are continuous in the longitudinal direction, and a contact surface 2 that contacts different surfaces of the workpiece is provided.
Form a and 2b. The surface of the planer stand 1 has a notch 2 in a direction that intersects with the longitudinal direction and whose tip is on the back side.
A notch 3 having a substantially V-shaped cross section is provided so as to form a cutting edge 4 that intersects with the front and back sides and penetrates from the front to the back, and the slope thereof is used as a surface fitting 5. A thin blade plate 6 whose cutting edge protrudes from the blade mouth 4 to the back side is provided on the surface fitting 5, and a support 7 is provided behind the thin blade plate 6 whose tip abuts the rear end of the blade plate 6. Then, a presser foot 8 is placed above the receiver 7. Then, the screws 9, 9 are fixed to the plane stand 1 by penetrating the presser foot 8 and the receiver 7 in a freely movable state, and the head 9a of the screw 9 and the presser foot 8 are engaged. An adjustment screw 10 that moves forward and backward toward the receiver 7 is provided at the rear end of the presser foot 8.

[Effect]

A blade plate 6 is placed in front of a receiver 7 which is located at a predetermined position on the surface of a plane stand 1 through the penetration of a screw 9, with the blade edge protruding from a blade mouth 4. After that, when the adjustment screw 10 is turned and the tip is pushed out in the direction of the holder 7, the rear end of the presser foot 8 rises and the front part is exposed using the head 9a of the engaged screw 9 as a fulcrum. Pressed towards the familiar side. At this time, the blade plate 6 in front of the receiver 7 is pressed and fixed by the tip of the presser foot 8.

As shown in FIG. 4, the contact surface 2a on the back side of the planer stand,
2b is brought into contact with different surfaces of the workpiece A, for example, the surface A' and the side A'', and the entire plane is moved, chamfering a fixed shape according to the dimensions of the cutting edge protruding into the notch 2 of the plane stand 1. will be performed accurately.

To remove the blade plate 6, contrary to the above case, loosen the adjustment screw, the rear end of the presser foot will drop, the pressure on the blade plate at the tip of the presser foot will be released, and the blade plate 6 can be freely removed.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

The plane stand 1 is usually made of hard and undeformable wood such as oak. On the back side of the planer stand 1, there is a mark in Fig. 3
As shown in the figure, a right-angled V-shaped cut 2 is provided. The shape of this cut may be modified depending on the shape and angle of the end of the workpiece. On the other hand, a V-shaped cut 3 is provided on the surface of the planer stand 1, but in the illustrated example, it is not directed in the longitudinal direction of the planer stand, but is inclined approximately 30 degrees with respect to the longitudinal direction. Therefore, the blade opening 4 appears as a trapezoid, and the tip of the blade plate 6 protrudes from this blade opening. In such a blade, the blade plate is not perpendicular to the direction of movement of the plane, but is inclined in accordance with the inclination angle of the cut 3, making it easier to cut into the workpiece. However, the cut in which the inclined surface forms the surface fit 5 may be in a direction perpendicular to the longitudinal direction of the planer stand.

The members placed on the surface fitting 5 are shown in FIG. In other words, the support 7 is placed behind the blade plate 6, and the presser foot 8 is placed above it. Hole 1 with a slightly larger diameter than the diameter of screw 9
2,12 are drilled. Further, a screw hole 13 into which an adjustment screw 10 is screwed is provided at the rear end of the presser foot 8. By making the through hole of the receiver 7 a long hole, it is possible to move the blade plate 6 along the surface of the mating surface 5 while supporting the rear end of the blade plate 6 at the tip of the receiver, and adjust the protrusion. can do. In other words, the blade mouth 4
The blade plate 6 is placed on the surface fitting 5 in a state in which it protrudes by a desired dimension, and is positioned below the tip of the presser foot 8. At this time, the rear end of the blade plate 6 is brought into contact with the leading edge of the receiver 7. When the adjustment screw 10 is tightened in this state, the tip thereof contacts the surface of the receiver, and the presser foot 8 and the receiver 7 are spread apart at the upper end of the presser foot 8.
When the presser foot 8 lifts up at the upper end, the tip moves downward using the screw 6 as a fulcrum, and the blade plate 6
is firmly pressed against the surface fitting 5 and fixed in a predetermined position.

When used as a plane, a huge force will be applied to the blade plate 6, but the blade plate 6 is pressed by the presser foot 8, and its rear end is supported by the holder 4. This means that there is no possibility of it moving erratically and it will be securely fixed.

FIG. 5 shows a modified embodiment of the present invention, in which the tip of the receiver 7 is fixed to the presser foot 8.
For example, the area indicated by X in FIG. 5a is fixed by pivot welding or the like. In this embodiment, the elongated hole 12' of the same shape and size as the elongated hole 11 of the receiver 7 is inserted into the presser foot 8.
The presser foot and the receiver can be moved integrally. Thereby, the amount of protrusion of the blade plate disposed in front of the receiver 7 from the blade opening can be adjusted. Figure 5a
When the presser foot and receiver are parallel as shown in the figure, the blade plate 6 moves freely.From this state, tighten the adjustment screw.
As the tip protrudes toward the receiver, the presser foot 8 tilts forward and presses and fixes the blade plate 6 with the tip, as shown in FIG. 5b. At this time, the retainer 7 is elastically deformed and the part fixed to the presser foot 8 lifts up a little, but the presser foot 8 itself engages with the head 9a of the screw 9 and tilts forward using this engagement position as a fulcrum. That will happen.

[Effect of idea]

According to the replaceable blade type chamfering plane of the present invention, the thin blade plate, which is sharp and can be supplied at low cost like the spare blade of a cutter knife, can be replaced as appropriate and used by fixing it to the surface of the plane stand. is extremely easy to adjust. Therefore, by aligning the cuts on the back of the plane stand with different surfaces of the workpiece, such as gypsum boards and various new building materials, which were difficult to machine with conventional planes due to blade spillage, etc. It is possible to perform chamfering with accurate shapes and angles.

[Brief explanation of the drawing]

The attached drawings show an embodiment of the chamfering plane of the present invention, in which Figure 1 is an overall plan view, Figure 2 is an exploded perspective view excluding the plane stand, Figure 3 is a cross-sectional view taken along the line -- of Figure 1,
Fig. 4 is a cross-sectional view showing the usage state of processing, Fig. 5 a and b show modified embodiments, and Fig. 5 a
5 is a sectional view showing a state in which the blade plate is not fixed, and FIG. 5b is a sectional view showing a state in which the blade plate is fixed. 1... Planer stand, 2... Notch, 2a, 2b... Contact surface, 3... Notch, 4... Blade mouth, 5... Surface familiarity, 6... Blade plate, 7... Receiver, 8... ...presser foot, 9
...screw, 9a...head, 10...adjustment screw, 1
1... Long hole, 12... Hole, 13... Screw hole.

Claims (1)

[Scope of utility model registration request] Cuts 2 that are continuous in the longitudinal direction are provided on the back surface of the planer stand 1, and contact surfaces 2a, 2 that contact different surfaces of the workpiece are provided.
On the other hand, the surface of the planer stand 1 has a roughly V-shaped cross section in order to form a cutting edge 4 in a direction intersecting the longitudinal direction, the tip of which intersects the notch 2 on the back surface and penetrates both the front and back sides. A notch 3 is provided, and its slope is defined as a surface cutting edge 5, and the cutting edge 5 includes a thin blade plate 6 whose cutting edge protrudes from the blade opening 4, and a support behind the thin blade plate 6 whose tip abuts against the rear end of the blade plate 6. 7, a presser foot 8 is arranged above the blade plate 6 and the receiver 7, and screws 9, penetrating the presser foot 8 and the receiver 7 in a freely movable state
9 is fixed to the plane stand 1, the head 9a of the screw 9 and the presser foot 8 are engaged, and the rear end of the presser foot 8 is provided with an adjustment screw 10 that moves forward and backward toward the receiver 7. A chamfering plane with replaceable blades.