JPH071250Y2 - Workrest in tabletop grinder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a work rest in a table grinder in which a grindstone is fixed to a rotary shaft of a motor.

(Prior Art) In a conventional table-top grinder, as shown in FIG. 3, a work rest A has an L shape when viewed from the side and a horizontal portion B.
A long hole C in the horizontal direction is provided in the work piece, and a work support portion E horizontally projects from the top of the vertical portion D to form a shape when viewed from the front. The work rest A is tightened and fixed to the lower surface of the grindstone cover G by a tightening bolt F penetrating the elongated hole C near the motor H. And grindstone I
It is specified that the clearance between the peripheral surface and the front surface of the work support E must be 3 mm or less at all times to prevent danger. The clearance must be adjusted by approaching the wheel surface.

(Problems to be solved by the invention) The table-top grinder is useful because it can be installed at a low price and is easy to use. However, in the case of a work with a complicated shape as shown in Fig. 4, the corners a, b, c, d,
When polishing e, etc., it may not be possible to polish unless the work is tilted vertically or horizontally. However, in the conventional table grinder, since the work support portion E of the work rest is located at substantially the center in the vertical direction at the opening of the grindstone cover G, even if the work W is inclined like the two-dot chain line in FIG. There is a problem that the work supporting part E cannot be tilted as desired because it is in the way, and the work efficiency is poor.
In such a case, an operator often removes the work rest A in order to improve work efficiency, but it is extremely dangerous.

Further, conventionally, the tightening bolt F of the work rest A is located between the grindstone cover G and the motor H at the lower part where it is difficult to use a spanner, so the work of loosening or tightening the tightening bolt F is troublesome, and the grindstone The adjustment of the clearance between the peripheral surface and the work supporting portion E was poor.

The present invention aims to provide a work rest in a table grinder in which the clearance between the grindstone and the peripheral surface of the grindstone can be easily and quickly adjusted, and the posture of the work can be arbitrarily set during polishing without being influenced by the work rest. It is a thing.

(Means for Solving the Problem) In order to achieve the above-mentioned object, the present invention provides a grindstone cover surrounding a grindstone with a fan-shaped opening in the front when viewed from the side, as in the conventional case, and an opening is provided. Rails are fixed along the lower edges on the outside of the front lower edges on both the left and right sides of the opening, and convex edges are provided on both the left and right ends of the back surface of the square plate. A work rest is configured by providing a groove that is slidably fitted to the work rest, and the groove of the work rest is fitted to the rail and is screwed to one convex edge so that the tip can project into the groove. The work rest is fixed to the rail.

(Operation) When the grindstone circumferential surface is worn, loosen the set screw to push up the workrest, and tighten the set screw again to fix the workrest at a position where the gap with the grindstone circumferential surface is appropriate.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

The grindstone cover 2 that surrounds the grindstone 1 is provided with an opening 3 by cutting out the front part in a fan shape as viewed from the side, as in the conventional case. On the outer surface of the lower edges 4, 5 along the lower edges 4, 5, rails 6,
7 are fixed to each. Reference numeral 8 denotes a work rest, which is a convex edge provided at both left and right sides on the back surface of the square plate 9.
Grooves 12, 13 are provided on the surfaces of 10, 11 facing each other, a screw hole 14 is provided on one convex edge 10 through the bottom of the groove 12, and the thickness of the grindstone 1 is approximately in the center of the upper side of the square plate 9. A slightly wider notch
15 are provided. In the work rest 8, the grooves 10 and 11 are slidably fitted to the rails 6 and 7, respectively, and the bottom 16 of the notch 15 is formed.
The gap between the wheel and the circumference of the grindstone is adjusted, and it is fixed by the set screw 17 screwed into the screw hole 14 (effect of the invention). The work rest is slidably fitted to the rails provided along the
Since the work rest is tilted downward at the lower part of the opening of the grindstone cover, even if the work to be polished is tilted in any posture, the work rest does not get in the way and the work is easy and the work efficiency can be improved. Further, since the set screw for fixing the workrest is close to the lower edge position of the opening of the grindstone cover, the gap between the grindstone circumferential surface and the workrest can be easily adjusted in a short time.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a top view of a main part of the same, FIG. 3 is a perspective view of a conventional grinder, FIG. 4 is a perspective view showing an example of a work, and FIG. The figure is a side view of a conventional grinder. 1 …… Whetstone, 2 …… Whetstone cover, 3 …… Opening, 4,5 ……
Lower edge, 6,7 ... Rail, 8 ... Work rest, 9 ... Square plate, 10,11 ... Convex edge, 12,13 ... Groove, 17 ... Set screw.

Claims (1)

[Scope of utility model registration request] 1. A grindstone cover 2 which surrounds the grindstone 1 is provided with an opening 3 formed by cutting out a front part thereof in a fan shape as viewed from the side, as in the conventional case, and a lower edge of a front falling on both left and right sides of the opening 3. Rails 6 and 7 are fixed along the lower edges 4 and 5, respectively, and convex edges 10 and 11 are provided at both left and right ends of the back surface of the square plate 9, and the convex edges 10 and 11 face each other. The rail on the surface
The work rest 8 is configured by providing the grooves 12 and 13 slidably fitted to the rails 6 and 7, and the grooves 12 and 13 of the work rest 8 are fitted to the rails 6 and 7, and one convex edge 10 is formed. Screwed to the groove 1
Work rest 8 with setscrew 17 that can project to 2
Workrest in a tabletop grinder characterized by being fixed to a rail 6.