JPS624558A - Inclined centerless grinder - Google Patents

Abstract

PURPOSE:To enable a shank to be ground with high accuracy even if the head of a bolt-like work is large compared with the shank and the shank has the small diameter by providing an abrasive wheel shaft, an adjusting wheel shaft and a blade which are inclined to a vertical plane in the same direction. CONSTITUTION:A mounting surface 16 of a bed 11 is inclined and a shaft 12' of an abrasive wheel 12, a shaft 13' of an adjusting wheel 13 and a blade 14 are provided inclined to a vertical plane in the same direction. Also, when the end face of stepped portion between the head and shank and the shank of a bolt-like work W are ground at the some time as the shank, and when only the shank is ground, a stopper 15 is provided to locate the work W. Thus, even if the head of the work W is large compared with the shank or the shank has the small diameter, the work W is stably supported on the blade 14 so that the shank can be ground with high accuracy.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is an inclined centerless grinder that is used for grinding the shaft of a workpiece having a bolt-shaped head in grinding with a centerless grinder. .

[Prior Art] Grinding of the shaft of a workpiece having a bolt-shaped head shown in Figs. 3(a), (b), and (c) is performed using the conventional centerless grinding machine shown in Figs. 4 and 5. When carrying out the work, the workpiece 1 is supported by the adjustment wheel 3 and the blade 4 provided on the bed 1.
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Depending on the shape of the workpiece, the top of the shaft to be ground may be held down with a roller to stabilize the workpiece on the blade. In either case, the machining accuracy is poor, especially for workpieces with large heads compared to the shaft, which cannot be ground with conventional centerless grinders and must be ground with cylindrical grinders. In this case, the machining process for the center hole increases, resulting in poor productivity.
Furthermore, when the shaft portion has a small diameter, there is a drawback that the shaft portion is deflected by the grinding wheel, making it impossible to obtain highly accurate grinding.

[Purpose of the Invention] As described above, grinding of the shaft of a bolt-like workpiece with a large head compared to the shaft, or a workpiece whose shaft has a small diameter and a head, is possible.
The present invention is proposed to solve this problem by using a tilted centerless grinding machine with high processing accuracy and productivity.

[Structure of the Invention] In order to solve the above-mentioned problems, the present invention provides a grinding machine without a tilt center, which grinds a workpiece by tilting a grinding wheel axle, an adjusting axle, and a blade in the same direction on a vertical plane. It is.

[Example] The present invention will be explained based on FIGS. 1 and 2 of the example.

As shown in the figure, the grinding wheel axle 12' of the grinding wheel 12,
The adjustment axle 13' of the adjustment wheel 13 and the blade 14 are inclined in the same direction on a vertical plane, and the bed 11 has a mounting surface 16 inclined therebetween. Therefore, even if the bolt-shaped workpiece has a large head compared to the shaft, or the shaft has a small diameter, it can be stably supported on the blade I4.
Even when performing grinding operations, the same automation and processing accuracy as with conventional centerless grinders can be achieved. Reference numeral 15 denotes a stopper during grinding of the workpiece, which is used for adjustment when grinding the end face of the step between the head and the shaft of the workpiece W at the same time as the detail, or when only the detail is being ground.

Although not shown, the mounting surface of the bed may be a horizontal surface, and the grinding wheel 12, the adjusting wheel 13, and the blade 14 may be mounted on the top surface by mounting a mounting base that tilts the bed in the same direction to a vertical plane. Furthermore, the grinding wheel 12, the adjusting wheel 13, and the blade 14 may be mounted on the mounting base so as to have a variable inclination.

[Effects of the invention] (1) Stable rotation during centerless grinding of bolt-shaped workpieces with a larger head than the shaft or workpieces with a small diameter shaft. This improves the accuracy of grinding.

(2) There is no need for center hole machining using a cylindrical grinder, streamlining productivity and saving labor.

(3) Recently, there has been an increasing demand for automated grinding of the shafts of workpieces with heads of automobile parts and improved productivity, and it has now become possible to meet these demands.

[Brief explanation of the drawing]

FIG. 1 is a front view of the present invention. FIG. 2 is a sectional view of FIG. 1. Figure 3 is an example of a shaft with a bolt-shaped workpiece head. Figure 4 is a front view of a conventional centerless grinder. Figure 5 shows
A cross-sectional view of FIG. 4 is shown. 11... Bed, 12... Grinding wheel, 12'...
Grinding wheel axle, 13...adjustment wheel, 13'...adjustment axle, 14...blade, 15...stopper, 16...
・Mounting surface, W...workpiece. Fig. 4 Fig. 5 Fig. 3 (a) Fig. 1 Fig. 2 Fig. 11 Bed 12 γ wheel east 12' Wheel axle 14 Blade 15 Stroke +9 pa 16 M1 attached surface W Workpiece

Claims (1)

[Claims] A centerless grinder that uses a grinding wheel to grind a workpiece supported by an adjusting wheel and a blade, characterized in that the wheel axle, the adjusting axle, and the blade are tilted in the same direction on a vertical plane. Grinding machine without tilt center.