JPH0653053U - Corner forming equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] It is an object of the present invention to allow anyone to perform a certain amount of chamfering and to polish a polished portion of a concave portion even with a stepped member. [Structure] A groove is formed by a narrow width guide surface having an L-shaped cross section, and a long window is formed from the back side of this groove so as to enter both guide surfaces in the middle to form a guide, and the hand grinder is used in this long window. It is characterized in that the polishing surfaces are combined and arranged so that the polishing surface slightly projects from the long window into the groove.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an apparatus for deburring various metal parts formed by a lathe, extrusion, etc. and for forming a corner.

[0002]

[Prior art]

 In the past, deburring was done by trimming with a deburring die or by hand with a file. Further, the corners are formed by manual work with a file or by abrading the surface to be polished with a grinder as in the above.

Further, in order to make the chamfering amount of the object to be polished constant with a grinder when forming the corner, a guide for supporting the object to be polished may be used.

[0004]

[Problems to be solved by the device]

 However, there is a problem that the amount of corner polishing is not constant due to manual work with a file or a grinder, which requires considerable skill, and workability is very poor. Therefore, in the case of a stepped member, it may be said that the convex portion abuts on the guide surface and the portion to be ground in the concave portion does not hit the grinder when using a guide that can be chamfered to a certain degree.

[0005]

[Means for Solving the Problems]

 Therefore, in the present invention, a groove is formed by a narrow width guide surface having an L-shaped cross section, and a long window is formed so as to enter both guide surfaces in the middle from the back side of this groove to form a guide. It is characterized in that the polishing surface of the hand grinder is aligned with and the polishing surface is arranged so as to slightly project into the groove from the long window.

[0006]

[Advantageous Effects] According to the above configuration, the polishing target can be chamfered or deburred by moving the position to be polished of the object to be polished along the long window along the groove of the guide.

[0007]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 1 is an explanatory view, FIG. 2 is a rear perspective view of a guide, and FIG. 3 is an explanatory view showing an example of a chamfering amount adjusting mechanism. In the figure, 1 is a hand grinder, and a polishing surface 2 is directed upward. It is fixed by a clamp (not shown).

Reference numeral 3 denotes a guide, which is provided with guide surfaces 5 and 6 having an L-shaped cross section to form a groove 4, and the widths of the guide surfaces 5 and 6 are, for example, 5 mm for the guide surface 5 and 6 for the guide surface 6. It has a very narrow width such as 10 mm. A long window 7 is formed in the middle of the guide 3 from the back side of the groove 4 by entering both guide surfaces 5 and 6, and a long hole 9 is formed in a supporting arm 8 thereof to move with respect to a base 10. It is installed as possible.

The polishing surface 2 of the hand grinder 1 is aligned with the long window 7 of the guide 3 thus arranged, and the polishing surface 2 is arranged so as to slightly project from the long window 7 into the groove 4. The amount of protrusion of the polishing surface 2 with respect to the groove 4 is the chamfering amount, and is adjusted by moving the support arm 8 along the elongated hole 9. According to the above configuration, the polishing surface 2 can be chamfered by a necessary amount by moving the polishing target portion of the polishing target object along the long window 7 in alignment with the groove 4 of the guide 3.

Further, even in the case of the stepped member, since the guide surface has a very narrow width, the convex portion does not interfere with the chamfering or deburring of the corner of the concave portion. Further, by exchanging the guides 3 having different widths of the guide surfaces 5 and 6, it becomes possible to deal with objects of various shapes to be polished. FIG. 3 shows an example of a chamfering amount adjusting mechanism. A nut 12 is attached to a support arm 8 of a guide 3 or a support base 11 (a support base is shown in the drawing), and a worm wheel 13 is attached to the end of the nut 12. The attached screw 14 is screwed, and the worm wheel 13 is engaged with the worm 16 connected to the handle 15.

With this configuration, the handle 15 can move the guide 3 by a small amount, and the chamfering amount can be finely adjusted.

[0012]

[Effect of device]

 According to the present invention described in detail above, a groove is formed by a guide surface having an L-shaped cross section and a very narrow width, and a long window is formed so as to enter both guide surfaces in the middle from the back side of the groove. As a guide, the grinding surface of the hand grinder was aligned with this long window so that the grinding surface slightly protrudes from the long window into the groove. By moving along the window, chamfering and deburring can be performed by the polishing surface, and it is possible to reliably perform chamfering by an amount corresponding to the protruding amount of the polishing surface.

Further, since the groove is formed by the guide surface having an L-shaped cross section and having an extremely narrow width, even if the member has a step, the convex portion does not obstruct the chamfering of the corner of the concave portion. It has the effect of enabling deburring.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an embodiment.

FIG. 2 is a rear perspective view of the guide.

FIG. 3 is an explanatory view showing an example of a chamfering amount adjusting mechanism.

[Explanation of symbols]

 1 Hand grinder 2 Polishing surface 2 3 Guide 4 Grooves 5 and 6 Guide surface 7 Long window

Claims (1)

[Scope of utility model registration request] 1. A groove is formed by a narrow-width guide surface having an L-shaped cross-section, and a long window is formed so as to enter both guide surfaces from the back side of this groove to the middle, to form a guide. A corner forming device characterized in that the polishing surfaces of a hand grinder are aligned and arranged so that the polishing surface slightly projects from a long window into a groove.