JPH085000Y2 - Corner chamfering device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corner chamfering device.

[0002]

[Prior Art and Problems to be Solved by the Invention]
The chamfering by chamfering the corner edge of a prismatic work or the like can be easily processed by a normal polishing device.
In the L-shaped rectangular work 1 as shown in (1), it was not possible to cleanly polish the inner edge 1a 'to the inner edge 1a'.

Therefore, conventionally, there is no choice but to grind the inner corner inner edge 1a 'separately by hand.
It was said to be a very troublesome processing operation.

The present invention has been made in view of these problems, and an object thereof is to provide a chamfering chamfering device capable of chamfering the chamfering edge up to the inner edge of the inner corner in one step.

[0005]

The gist of the present invention will be described with reference to the accompanying drawings.

Bearing guide edges 16 are provided on the left and right above the polishing portion 2 along the front-rear direction, and the outer edges of the positioning plate 3 are slidably fitted to the bearing guide edges 16 to slide the positioning plate 3 on the polishing portion 2. It is installed so as to be slidable upward, and an inverted V-shaped positioning groove 4 is formed on the upper surface of the positioning plate 3 so as to be connected to at least the front side edge of the positioning plate 3 and formed to have a predetermined length along the sliding movement direction. When the rectangular work 1 is brought into contact with at least one side tapered surface of the positioning groove 4 at the V-shaped bottom of the positioning groove 4, the corner edge 1a of the work 1 projects toward the polishing portion 2 below. The present invention relates to a chamfered chamfering device, characterized in that the projecting groove hole 5 is formed continuously at least at the front side edge of the positioning plate 3.

[0007]

For example, when chamfering the corner edge 1a of the work 1 as shown in FIG. 1, the taper surface of the positioning groove 4 of the positioning plate 3 is brought into contact with the portion 1A of the work 1 to be chamfered.
When the vertical portion 1B of the work 1 is brought into contact with the front side surface of the positioning plate 3 for positioning, the protruding groove hole 5 at the bottom of the positioning groove 4 is formed.
The corner edge 1a on the side of the portion 1A to be chamfered is the inner corner inner edge 1 of the boundary between the side of the portion 1A to be chamfered and the vertical portion 1B.
All of the corner edges 1a from a'are arranged in a protruding state toward the polishing portion 2. When the positioning plate 3 is slid along with the work 1, the protruding corner edge 1a is chamfered and polished by the polishing section 2.

[0008]

EXAMPLE In this example, the edge 1a of the L-shaped rectangular work 1 as shown in FIG. 1 is also chamfered from the tip of the portion 1A to the inner corner inner edge 1a 'of the boundary with the vertical portion 1B. Chamfered and polished.

First, the configuration will be described.

Mounting plates 7 are installed on the left and right at a height suitable for work on the mounting base plate 6 with a predetermined interval in the center, and the inside of the mounting plate 7 is positioned as a bearing guide edge 16 on the bearing guide edge 16. The outer edge of the plate 3 is slidably fitted, and the positioning plate 3 is provided between the mounting plates 7 so as to be horizontally slidable in the front-rear direction.

On the rear side of the positioning plate 3, there is provided a spring 8 for constantly biasing the positioning plate 3 backward, and
A positioning stopper rod 9 for positioning the position of the positioning plate 3 at the time of starting is provided by the biasing force of the spring 8.

Below the positioning plate 3, a polishing section 2 employing a rotary grindstone method is arranged in proximity. Reference numeral 10 in the figure is a rotary drive motor.

Further, the mounting base plate 6 is provided with a polishing portion height adjusting mechanism 11 for adjusting the chamfering degree by vertically moving the polishing portion 2 to adjust the distance to the positioning plate 3.

The polishing portion height adjusting mechanism 11 rotates a handle 12 to rotate a screw rod 14 via a gear 13 and vertically move a nut portion 15 screwed to the screw rod 14, The polishing section 2 integrated with the nut section 15 is configured to move up and down.

The positioning plate 3 has a positioning groove 4 having a wide angle of 45 degrees and a V-shaped cross section, which is formed at the center of the plate surface and has a V-shaped cross section. Is formed in a predetermined length in the front-back direction.

When the chamfered portion 1A of the workpiece 1 is brought into contact with both tapered surfaces of the positioning groove 4 at the V-shaped bottom portion of the positioning groove 4, a corner edge 1a serving as a lower top edge of the chamfered portion 1A is formed. The projecting slot 5 is formed so as to be continuous with the front edge of the positioning plate 3.

Therefore, this embodiment operates as follows.

As shown in FIG. 3, the tapered surface of the positioning groove 4 of the positioning plate 3 is brought into contact with the side 1A of the workpiece 1 to be chamfered, and the side surface of the positioning plate 3 is brought into contact with the vertical portion 1B of the workpiece 1. After positioning, as shown in FIG. 4, a portion 1A to be chamfered from the protruding groove hole 5 at the bottom of the positioning groove 4
The side edge 1a is a portion 1A to be chamfered and a vertical portion 1a.
From the inner corner inner edge 1a ′ of the boundary with the B side, all the corner edges 1a are arranged in a protruding state toward the polishing portion 2.

At the starting position shown in FIGS. 3 and 4, the inner side corner inner edge 1a 'is ground because it is positioned by abutting against the stopper rod 9. From this point, when the positioning plate 3 is slid forward while pressing the work 1, the protruding corner edge 1a is chamfered and polished by the polishing section 2.

The present invention is not limited to this embodiment, and the work 1
And the positioning plate 3 and the sliding structure can be designed appropriately, and the positioning groove 4 and the projecting groove hole 5 can be designed appropriately according to the shape and size of the work 1.

[0021]

EFFECTS OF THE INVENTION Since the present invention is constructed as described above, chamfering the corner edge to the inner corner inner edge cleanly only by a series of moving steps by simply applying the work to the positioning groove and sliding it together with the positioning plate. Since it is not a method that can be processed and the work itself slides by sliding the positioning plate against which the work is applied during this sliding movement, the work can be held in the positioned state, so it is possible to finish accurately and cleanly It is an extremely excellent chamfering machine for corner edges.

[Brief description of drawings]

FIG. 1 is a perspective view of a work in this embodiment.

FIG. 2 is a perspective view of the present embodiment.

FIG. 3 is a plan view at the start of chamfering processing according to the present embodiment.

FIG. 4 is a side sectional view of the present embodiment at the start of chamfering processing.

FIG. 5 is a perspective view of the present embodiment at the end of chamfering.

FIG. 6 is a side sectional view at the end of the chamfering process according to the present embodiment.

FIG. 7 is a front view of the present embodiment.

[Explanation of symbols]

 1 Work 1a Square edge 2 Polished part 3 Positioning plate 4 Positioning groove 5 Projection groove hole 16 Bearing guide edge

Claims (1)

[Scope of utility model registration request] 1. A bearing guide edge is provided oppositely to the left and right above the polishing portion along the front-rear direction, and an outer edge of a positioning plate is slidably fitted to the bearing guide edge so that the positioning plate slides above the polishing portion. The positioning plate is freely installed, and an inverted V-shaped positioning groove is continuously formed on the upper surface of the positioning plate at least along the front edge of the positioning plate to form a predetermined length along the slide movement direction. When a rectangular work is brought into contact with at least one tapered surface of the positioning groove, a projecting groove hole in which a corner edge of the work projects toward the lower polishing portion is connected to at least the front edge of the positioning plate. A corner edge chamfering device, which is formed in an installed state.