JPH0616006U - 2-stage router bit - Google Patents

Abstract

(57) [Summary] [Purpose] To make it possible to perform a hole finishing work on a plate material to be processed with high efficiency, to significantly reduce the time required for the work, and to make the price of the blade economical. [Structure] A bottom blade 3 is provided on the bottom surface of a rod-shaped blade body 1 integrally provided with a mounting shaft 2 at the upper end, and a linear side blade 4 is provided continuously above the bottom blade 3 to form a straight line shape. A side surface finish forming blade 5 having an arbitrary shape other than a straight line is provided continuously above the side surface blade 4. First, the jig 10 supported on the table 7 of the router is supported at a predetermined position on the support base 9.
The fixed side plate material 14 is formed with a straight side blade 4 to make a prepared hole 15, and then the side surface forming blade 5 is used to finish the inner peripheral surface of the prepared hole 15 into a formed surface having a desired shape.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a two-stage router bit used for cutting and forming a wood edge into a desired shape.

[0002]

[Prior art]

 Conventionally, when punching holes of a desired shape in a large number of plate materials and cutting and forming the inner peripheral surface of the holes into, for example, an arc shape, first use a straight bit to complete all pre-drilling with a router. Therefore, a method of finishing the inner peripheral surface of the pilot hole into an arc shape by using an arc-shaped forming bit was then adopted.

[0003]

[Problems to be solved by the device]

 In the case of the above-mentioned conventional method, the work of attaching and detaching to / from the jig is performed twice for all the plate materials, which requires two steps of the preliminary drilling work and the finishing work. It was difficult to carry out efficiently.

The present invention solves the above-mentioned problems of the related art, enables the drilling and finishing work to be performed with high efficiency, and significantly reduces the time required for the work, and makes the price of the blade economical. That is the purpose.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the two-stage router bit according to the present invention has a bottom blade 3 provided on the bottom surface of a rod-shaped blade body 1 integrally provided with a mounting shaft 2 at the upper end, and an upper side of the bottom blade 3 Is provided with a straight side blade 4, and above the straight side blade 4 is continuously provided a side finish forming blade 5 having an arbitrary shape other than a straight line.

[0006]

[Action]

 When using the two-stage router bit according to the present invention to make a hole of a desired shape in the plate material 14 to be machined and to finish the inner peripheral surface of the hole into a molding surface of a desired shape, first, referring to FIG. As shown, the mounting shaft 2 in the two-stage router bit according to the present invention is mounted on the rotating main shaft 6 of the router, while the jig 10 supported on the table 7 of the router is mounted on the support base 9 in a predetermined manner. While the plate material 14 is supported at the position, and while the plate material 14 is fixed by the material retainer 11, the rotary spindle 6 is rotated and the straight side surface blade 4 is formed. After cutting the plate material 14 by raising the table 7 until it comes into contact with the inner peripheral surface of the hole 15, the profile mold 13 of the mold plate 12 fixed to the lower surface of the support base 9 is attached to the center pin 8 of the router. Jig 1 When the plate material 14 to be processed and the plate material 14 are horizontally moved integrally with each other, the prepared hole 15 is formed in the processed plate material 14, so that the side surface finish forming blade 5 is continuously formed on the inner peripheral surface of the prepared hole 15 as shown in FIG. As the table 7 is raised until it comes to the abutting position, the tracing die 13 of the die plate 12 is applied to the center pin 8 of the router in the same manner as described above, and the jig 10 and the work sheet material 14 are made horizontal integrally. When moved, a hole 16 having a desired shape is made in the plate material 14 to be processed, and the inner peripheral surface of the hole 16 is finished into a molding surface having a desired shape.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a rod-shaped blade body having a mounting shaft 2 provided at the upper end thereof as a body, and a pair of left and right bottom blades 3 is provided on the bottom surface of the blade body 1. A pair of left and right straight side blades 4 are provided continuously in the upper direction, and any shape except straight lines is continuously provided above the straight side blade 4, for example, concave-convex left and right side finishes as shown in the drawings. Forming blade 5 is provided. The minimum diameter of the side surface finishing blade 5 is set slightly larger than the diameter of the straight side surface blade 4.

In the above embodiment, the bottom surface blade 3, the linear side surface blade 4 and the side surface finish forming blade 5 are provided in the number of two, but the number may be greater than this.

3 and 4, 6 is a rotary spindle in a router, 7 is a table in the router, 8 is a center pin, 9 is a support base in a jig 10, and 11 is a support base. 9 is a material retainer provided at the upper end of the base plate, 12 is a template fixed to the lower surface of the support base 9, 13 is a profile mold of the template 12, 14 is a plate material to be processed, and 15 is a bottom plate opened in the plate material 14 to be processed. Holes 16 are finished holes.

[0011]

[Effect of device]

 For example, in the case of making a hole of a desired shape in a square plate material having a thickness of 1 to 1.5 cm and a side of about 10 cm, and finishing the inner peripheral surface of the hole to a forming surface of a desired shape, According to the conventional method, one hour is required for each of the pre-drilling work and the finishing work for drilling 300 to 400 holes, and a total work time of 2 hours is spent. However, when the two-stage router bit according to the present invention is used, the work for attaching and detaching the jig to and from the jig for one work piece has conventionally been performed twice, but only once. Since the work and finishing work can be performed continuously, it is possible to complete the work in about 1 hour. Therefore, the time required for the drilling and finishing work is significantly shortened, so that the burden on the operator is reduced and the labor cost is significantly reduced.

[0012] Although two router bits, that is, a straight bit and a molding bit, have been conventionally required, one router bit is sufficient, and thus a large practical effect such as a reduction in blade cost can be achieved.

[Brief description of drawings]

FIG. 1 is a front view of a two-stage router bit according to the present invention.

FIG. 2 is a bottom view of the above.

FIG. 3 is a sectional view showing a usage state of the two-stage router bit according to the present invention.

FIG. 4 is a sectional view of the same.

[Explanation of symbols]

 1 Blade 2 Mounting Shaft 3 Bottom Blade 4 Linear Side Blade 5 Side Finishing Blade

Claims (1)

[Scope of utility model registration request] 1. A bottom blade is provided on the bottom surface of a rod-shaped blade body integrally provided with an attachment shaft at the upper end, and a linear side blade is provided continuously above the bottom blade. A two-stage router bit that is provided with a side finish forming blade of any shape except a straight line that is continuous upward.