JPS6076952A - Corner grinder - Google Patents

Abstract

PURPOSE:To perform corner grinding efficiently thus to achieve safe, stable and high quality work, by employing a dedicated forming cutter for grinding tool correspondably against fluctuation of board thickness and projected dimension at the finishing section. CONSTITUTION:When grinding a corner, a guide 5 is moved up and down with correspondence to the board thickness (t) at the grinding portion of work 1 to set the body 3 on the work 1 through a guide 4. Then a guide 6 is slided with correspondence to the projecting dimension of grinding portion to position the body 3 in projecting direction then move a grinding block 7 assembled in the body 3 up and down by means of an adjusting system 8 to set at the grinding position simultaneously with a safety system 9. Then a cutter 12 is rotated by motor 11 to move the body 3 in longitudinal direction through a handle 10 thus to grind from upper and lower directions. Since a ball is employed at the leading edge of guide 5, the body 3 will slide smoothly to stabilize the quality while the safety system 9 will protect the cutter 12 from breakdown due to excessive pushing force.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a grinding operation, and particularly to a corner grinding device suitable for grinding the corners of large products.

[Background of the invention]

A conventional corner grinding situation is, for example, as shown in FIG. 1, in which a standard tool grinder 2 is used to grind the object 1 to be ground. Figure 2 shows the grinding process for a corner of the object to be ground 1. To obtain a curved corner finish, a variable grinder must be applied to the same finished part, resulting in poor work efficiency. The finished surface was uneven, and grinder marks remained, resulting in poor quality. Furthermore, the work was dangerous because the grinder 2 had to be applied to the corner.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a corner grinding device that can grind corners efficiently, have stable quality, and safely grind corners.

[Summary of the invention]

In the present invention, the grinding tool is changed from a standard grinder to a special general purpose cutting tool, and this cutting tool is made to be able to cope with changes in the plate thickness and protrusion size of the finished part.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 3 to 6.

The main body 3 slides with respect to the object to be ground 1, and its vertical position is adjusted by a guide 4 provided at the bottom and a guide 5 with a ball rotatably attached to the tip, and the protrusion direction of the grinding part is adjusted. The position is adjusted by a guide 6 slidably mounted in the direction of protrusion.

FIG. 4 shows a grinding block 7 that is incorporated into the main body 3. A motor 11 for rotating a general cutter 12 is mounted on the grinding block 7, and the grinding block 7 is built into the main body 3 so that it can be moved up and down by a guide 13 on the side, and it can be moved up and down by an adjustment device 8. be done.

The motor 11 and the cutting tool 2 are arranged as shown in FIG. 5, and the mounting position of the cutting tool 12 with respect to the grinding block 7 is fixed. When grinding both the upper and lower surfaces at the same time, the two grinding blocks 7 are arranged as shown in FIG. 3. They are each attached to the main body 3 with an inclination of 45 degrees in the vertical direction. Figure 6 shows the cutting tool 12.
A safety device 9 is shown to prevent the blade from being damaged due to being pressed more than necessary during grinding, and is incorporated into the grinding block 7 in the same way as the cutting tool 2.

When grinding a corner, the guide 5 is moved up and down according to the plate thickness t of the grinding part of the object 1 to be ground, and the main body 3 is set on the object 1 by the guide 4 at the bottom of the main body 3. Next, the guide 6 is slid in accordance with the protrusion dimension l of the grinding portion, and the main body 3 is positioned in the protrusion direction. And main body 3
The grinding block 7 incorporated in the grinding block 7 is moved up and down by the adjustment device 8 and set to the grinding position. At this time, the safety device 9 is also set at the same time.

When the cutting tool 12 is rotated by the motor 11 and the main body 3 is manually moved in the longitudinal direction using the handles 0 provided at both ends of the main body 3, the grinding section is ground from above and below by the cutting tool 12, and the grinding section is It will look like Figure C.

In this case, since the tip of the guide 5 uses a ball, the main body 3 slides smoothly, and the safety device 9 prevents the cutting tool 12 from being damaged even if an excessive pressing force is applied to the cutting tool 12 during grinding. be able to.

According to this embodiment, it is possible to cope with changes in the plate thickness and protrusion dimension of the grinding part, and to perform corner grinding work efficiently, stably in quality, and safely.

〔Effect of the invention〕

According to the present invention, it is possible to cope with changes in the plate thickness and protrusion dimension of the grinding part, and there is an effect that corner part grinding work can be carried out efficiently, stably in quality, and safely.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional corner grinding situation, Fig. 2 is an explanatory diagram of a conventional grinding process, Fig. 3 is a perspective view of an embodiment of the device of the present invention, and Fig. 4 is a perspective view of a grinding block. , and FIG. 5.6 are sectional views taken along lines AA and BB in FIG. 4, respectively. 1...Object to be ground, 3...Main body, 4, 5
．． 6... Guide, 7... Grinding block, 8... Adjustment device, 9... Safety device,
10...Handle, 11...Motor, yt diagram Figure 2 (Q) (b) (C) Figure 4 Figure 5

Claims (1)

[Claims] 1. The mounting position of the main body can be adjusted in the vertical direction of the object to be ground and the protrusion of the white part to be ground, and one grinding block is built into the main body so as to be movable up and down, A corner grinding device characterized in that a total cutting tool connected to a drive source is attached to the corner grinding device.