JPH0319772A - Position setting method for shot peening nozzle - Google Patents

Abstract

PURPOSE:To accurately and easily set the position of a shot peening nozzle by projecting a beam of light, having an optical axis agreeing with the axis of a nozzle hole, from a light source in a nozzle position setting jig to a workpiece and adjusting a relative position between the workpiece and the shot peening nozzle. CONSTITUTION:By setting a nozzle position setting jig 2 in the top end part of a shot peening nozzle 1, a beam of light 5 is irradiated to a workpiece from a light source 3 via a small diameter hole 4, and a position of the shot peening nozzle is adjusted by moving a bracket in a vertical direction along a long hole, while seeing an irradiation condition of the beam of light, so that the shot peening nozzle 1 is placed in the desired position for the workpiece. Further by rotating the bracket along two long holes to adjust its angle and by fixing this bracket with a bolt when the shot peening nozzle is decided to be set in the desired position, the position of the shot peening nozzle 1 is set in the desired position.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for setting the position of a shot peening nozzle. The present invention relates to a method for setting the position of a shot peening nozzle that uses steel shot to strike the steel shot using an air flow.

BACKGROUND OF THE INVENTION In order to improve the surface hardness of a workpiece, a shot peening nozzle is known in which a steel shot made of a large number of steel balls is struck onto the workpiece surface using an air stream.

In this shot peening nozzle, in order to hit the steel shot at the desired position on the workpiece, it is necessary to set the nozzle position accurately every time the size or type of workpiece changes. The nozzle position was set by testing the shot on the workpiece and observing the position of the steel shot on the workpiece.

Problems to be Solved by the Invention However, it is extremely troublesome to test the workpiece with steel shot and set the nozzle position every time the size or type of the workpiece changes. Therefore, it was not always possible to accurately set the nozzle position.

Purpose of the Invention The present invention provides a method for setting the position of a shot peening nozzle that projects steel shot onto a workpiece using an air flow, and provides a shot peening nozzle that allows the position of the shot peening nozzle to be set accurately and easily. The purpose is to provide a position setting method.

Structure and Function of the Invention An object of the present invention is to set a nozzle positioning jig equipped with a light source capable of emitting a light beam having an optical axis coinciding with the axis of the nozzle hole at the tip of a shot pinning nozzle. This is accomplished by projecting a light beam from the light source onto the workpiece, the optical axis of which coincides with the axis of the nozzle hole, and adjusting the relative position of the workpiece and the shot peening nozzle.

According to the present invention, a nozzle position setting jig equipped with a light source capable of emitting a light beam having an optical axis coinciding with the axis of the nozzle hole is set at the tip of the shot peening nozzle, and the nozzle position setting jig is set at the tip of the shot peening nozzle. By projecting a light beam whose optical axis coincides with the workpiece onto the workpiece, the relative position between the shot peening nozzle and the workpiece can be accurately determined. Therefore, steel shot can be easily and accurately detected without the need for trial shots. This makes it possible to set the position of the shot peening nozzle as desired.

In a preferred embodiment of the present invention, the nozzle position setting jig has a small diameter hole such that the axis thereof is coaxial with the axis of the nozzle hole when set in the shot peening nozzle. According to this embodiment, the light emitted from the light source becomes a light beam having an optical axis that coincides with the axis of the nozzle hole through this small diameter hole, and is irradiated onto the workpiece, so that the shot pi-nin nozzle and the workpiece are It is possible to accurately know the relative position, and therefore, it is possible to easily and accurately set the position of the shot peening nozzle as desired without having to test steel shot.

In another preferred embodiment of the present invention, the nozzle position setting jig is adjustable in position, and when the nozzle position setting jig is set on the shot pinning nozzle, the axis of the nozzle hole and the light source are aligned. It has a lens system in which the optical axes connecting the lens center and the lens center coincide with each other. According to this embodiment,
By adjusting the position of the lens system, the light rays emitted from the light source can be focused on the surface of the workpiece, making it possible to accurately know the relative position of the shot peening nozzle and the workpiece. The position of the shot peening nozzle can be easily and accurately set as desired without trial firing.

Furthermore, in another preferred embodiment of the present invention, the light source provided on the nozzle position setting jig is constituted by a laser light source that emits a laser beam having an optical axis coinciding with the axis of the nozzle hole. According to this embodiment, since a coherent laser beam is emitted, the workpiece can be irradiated with a beam having an optical axis that coincides with the axis of the nozzle hole without providing a small diameter hole or a lens system. The relative position between the shot peening nozzle and the workpiece can be accurately known, making it possible to easily and accurately set the shot peening nozzle position as desired without having to test steel shot. Become.

EXAMPLES Hereinafter, examples of the present invention will be described in detail based on the accompanying drawings.

FIG. 1 is a schematic vertical cross-sectional view showing a shot peening nozzle with a nozzle position setting jig set therein.

In FIG. 1, a nozzle position setting jig 2 is set at the tip of a shot peening nozzle 1. As shown in FIG. The nozzle position setting jig 2 is equipped with a light source 3, and a small diameter hole 4 is formed at the end opposite to the shot pinning nozzle 1. This small diameter hole 4 is shaped so that when the nozzle position setting jig 2 is placed at the tip of the shot peening nozzle 1, its axis coincides with the axis of the shot peening nozzle 1. Therefore, the light emitted from the light source 3 passes through the small diameter hole 4 and becomes a light beam 5 whose tip axis coincides with the axis of the shot pinning nozzle 1.
By irradiating the workpiece (not shown), the workpiece 1 and the shot peening nozzle 1
In other words, the steel shot projection direction of the shot peening nozzle (2) relative to the workpiece can be accurately detected.

FIG. 2 is a front view of a shot peening apparatus having a shot peening nozzle 1. FIG.

In FIG. 2, the shot pinning nozzle 1 is attached to a fixed bracket 8 fixed to a mounting table 7 via a bracket 9 so as to face the workpiece 6. The fixing bracket 8 has two elongated holes 1 extending downward.
0, and the bracket 9 is movable in the vertical direction while being guided by the elongated hole 10. On the other hand, although not shown, the fixed bracket 8 also has a horizontal direction. The bracket 9 is guided by the two long holes, and the bracket 9 is guided by the two long holes.
It is designed to be able to rotate within a predetermined angular range. In FIG. 2, reference numeral 11 is a workpiece supporter that supports the workpiece 6, and reference numeral 12 is a bolt that fixes the bracket 9. In FIG. 2, the bracket 9 and therefore the shot peening nozzle 1 are shown in their lowest position.

Therefore, as shown in FIG. 1, a nozzle position setting jig 2 is set at the tip of the shot peening nozzle l, and a light beam 5 is directed from the light source 3 through the small diameter hole 4 to the workpiece 6.
While observing the irradiation state, move the bracket 9 vertically along the elongated hole 10 so that the shot peening nozzle 1 is located at a desired position relative to the workpiece 6. In addition to adjusting, 2 (not shown)
When it is determined that the shot peening nozzle 1 is set at the desired position, the shot peening nozzle 1 is positioned as desired by fixing the bracket 9 with the bolt 12. Can be set to .

According to this embodiment, after the nozzle position setting jig 2 is set at the tip of the shot peening nozzle 1, the light source 3
The light beam 5 is emitted through the small diameter hole 4, and the light beam 5 whose optical axis coincides with the axis of the shot peening nozzle 1 is irradiated onto the workpiece 6. can be detected accurately, so by adjusting the position and angle of the bracket 9 while observing the position of the light beam irradiated onto the workpiece 6, the shot peening nozzle 1 can be adjusted without making a trial shot with steel shot. It becomes possible to set the workpiece 6 at a desired position.

The present invention is not limited to the above-mentioned examples, but various modifications can be made within the scope of the invention described in the claims, and these are also included within the scope of the present invention. Needless to say.

Effects of the Invention According to the present invention, it is possible to accurately and easily set the position of a shot peening nozzle that projects steel shot onto a workpiece using an air flow.

[Brief explanation of drawings]

FIG. 1 is a schematic vertical cross-sectional view showing a shot peening nozzle with a nozzle position setting jig set therein. FIG. 2 is a front view of a shot peening device having a shot peening nozzle. 1... Shot peening nozzle, 2...
... Nozzle position setting jig, 3... Light source,
4...Small diameter hole, 5...Light ray,
6... Workpiece, 7... Placement table, 8... Fixing bracket 9...
... Bracket, 10 ... Long hole, q 10 1 1 Work support, 1 2 1 1 ... Bolt. Figure 1

Claims (1)

[Claims] In a method for setting the position of a shot peening nozzle that projects steel shot onto a workpiece using an air flow, the nozzle position is provided with a light source capable of emitting a light beam having an optical axis coinciding with the axis of a nozzle hole at the tip of the shot peening nozzle. A setting jig is set, and a light beam having an optical axis coinciding with the axis of the nozzle hole is projected from the light source onto the workpiece to adjust the relative position of the workpiece and the shot peening nozzle. How to position the shot peening nozzle.