JPS5811527Y2 - Adjustable chamfer cutter - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a cutter with variable chamfering.

Chamfering of tenons formed at joints between frame members of wooden houses and the like is generally done manually using chisels and other tools.

However, recently, electric mortise cutting machines have become popular, and those that combine the mortise saw with a chamfer cutter to perform chamfering at the same time as the tenon cutting operation are used. There is the inconvenience of having to replace it with a chamfer cutter that is compatible with the
Since it is necessary to prepare a chamfer cutter with a numerical value that matches the length of the groove, it is economically impractical.

In order to solve these conventional drawbacks, this invention has a plurality of chamfer cutters variably provided on one side of the chisel saw, so that the chamfer cutters can be easily and reliably adapted to the length of the tenon. This not only improves work efficiency, but also improves workability and economic efficiency.

One embodiment of the invention will be described below with reference to the drawings. In the drawings, reference numeral 1 denotes a tenon chip saw fixed to a rotating shaft 4 via flanges 5, 5', and a plurality of chamfer cutters (three in the embodiment) are mounted on the side surface of the saw. ) 2 are provided in a radial manner so that they can be moved forward and backward in and out directions through arbitrary variable means by rotating the adjustment flange 3, and this chamfer cutter 2 is integrally connected to the tenon cutting saw 1 and the adjustment flange 3 by a clamp nut 6. The structure is such that it can be done.

In the embodiment, as the variable means, a long hole 7 of a certain length a is bored in the chisel saw 1, and a pin 8 fixed near the tip of the chamfering cutter 2 is loosely fitted into the long hole 7 so that it can slide. At the same time, the pin 9 fixed on the adjustment flange 3 is fitted into the hole 10 made in the proximal band of the chamfering cutter 2 so that it can rotate freely, and the adjustment flange 3 is rotated, for example, to the left at a certain angle. When the chamfering cutter 2 is rotated by The structure is such that the chamfer cutter 2 can be accurately fitted to the chamfer cutter 2.

In addition, in the figure, 11 is a snap ring to prevent the tenon cutting saw 1, chamfering cutter 2, and adjustment flange 3 from being removed, which is fitted to the flange 5', and 12 is a saw with a barrel, and a notch that forms the groove B. It is intended to contain.

In the above configuration, when adjusting the chamfering cutter 2, by loosening the clamp nut 6 and rotating the adjustment flange 3, the chamfering cutter 2 is pressed and moved by the pin 9,
Since it can be moved inward and outward within a certain range (for example, the range of the elongated hole 7), it can be easily adapted to the length of the tenon B, and after adjustment, the clamp nut 6
By tightening, the chip saw 1 and the cutter 2 can be integrally connected, allowing the desired tenon and chamfering operations to be performed at the same time.

As explained above, this idea has a simple structure in which multiple chamfering cutters are variably installed on one side of the chisel cutting saw, making it easy to use chamfering cutters even when the chisel length is different. Since it is possible to reliably match the chamfers of tenons of different lengths, the chamfers can always be machined to a constant size.

Therefore, the most effective tenon in terms of strength and structure can be formed.

In addition, it eliminates the need to change the chamfer cutter for each tenon length as in the past, which significantly improves work efficiency, and eliminates the need to prepare several separate cutters, making it economical. This is a device with many practical benefits in actual use, as the relative position of the chip saw and cutter can be adjusted accurately by simply loosening the handle and rotating the adjustment flange, improving work efficiency.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of this invention, and FIG. 2 is a longitudinal side view. 1... Chiseled chip saw, 2... Chamfering cutter, 3... Adjustment flange, 4...
... Rotating shaft, 6... Clamp nut.

Claims (1)

[Scope of utility model registration request] A variable chamfering cutter characterized in that a plurality of chamfering cutters 2 are provided on one side of a chisel cutting saw 1 so that they can be moved forward and backward through an arbitrary variable means by rotating an adjustment flange 3.