JPS6018274Y2 - Positioning jig for R machining - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a jig for positioning a workpiece when R processing is performed using a circular table in price processing.

Conventionally, when performing R machining of a workpiece as shown in Fig. 1 by milling or chair machining, the workpiece is first marked with a required radius dimension R, and then placed on a circular dipole plate. While rotating the circular table 17, the workpiece was positioned so that the marking line was concentric with the center of the main axis of the milling machine, and the workpiece was rounded.

L7However, this positioning method has drawbacks such as difficulty in accurate positioning and a large amount of time spent on positioning.

An object of the present invention is to provide a jig that can improve the above drawbacks and perform accurate positioning in a short time.

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 2 is a perspective view showing the structure of an embodiment of the present invention.

Reference numeral 1 designates a guide plate having grooves 2, 150H positioning pin holes 3, 4. 250TrIn positioning pin holes 5 and 6.
Equipped with positioning pin holes 7 and 8 for 300TMt.

A Y-shaped positioning plate 9 slides in this groove 2.

At the tip of the positioning plate 9, there is a positioning surface 1 having an angle of 2α (α=45 degrees in this embodiment) spaced equally in the sliding direction.
0 and 10'.

Further, a base line 11 and a pitch cosee α□ scale 12 are carved on the upper surface of each sliding portion of the guide plate 1 and the positioning plate 9.

The base line 11 and scale 12 are set so that when the rotation center 14 of the circular table board 13 and the intersection 15 of the positioning surfaces 10 and 10' coincide, the origin becomes the origin.

The distance between the centers of the positioning bin holes 3 and 4 for 150B and the circular table board 13 is the sum of the radius of the circular table board 13 (75 in this example) and the radius of the positioning bin 16.17 (4771771 in this example). There are 7 fields.

Furthermore, these positioning pin holes 3 and 4 are located at equal distances (357 TIJTL in this embodiment) from the sliding center line of the Y-shaped positioning plate 9, respectively.

Positioning pin holes 5 and 6 for 2bow, and 300
7rIJn positioning pin holes 7, 8 and "j--+1"'
) 7 = center distance of pull board 13 is circular table board 1
3 radius (in this example, 125 mm and 150 mm, respectively)
mm) and the radius of the positioning pin 16.17 (4 mm in this example), which is 129 mm, which is located in the 154th group.

The positioning pins 16, 17 are inserted into the positioning pin holes 3, 4 and 5.6 and 7, 8 corresponding to the radius of the circular table board 13.

The positioning plate 9 is fixed at a desired position using the fixing knob 18.

The operation of this embodiment will be explained using FIG. 3.

Positioning pin 16. for 150m positioning pin holes 3 and 4.
Insert the positioning pins 16 and 17 at the waist with a radius of 15o.
Tr! It is inserted and fixed at any position on the outer peripheral surface of the circular table board 13 of n.

In this fixed state, the positioning plate 9 is connected to the circular table board 1.
It can slide in the direction of the rotation center of No. 3.

Furthermore, by matching the base line 11 on the guide plate 1 and the scale 12 on the positioning plate 9 to the required R dimension of the workpiece 19, the positioning surfaces 10 and 10' of the positioning plate 9 can be adjusted to the R dimension from the rotation center of the circular table 13. It will be set at a position that is the same distance away.

In this state, the workpiece 19 is placed on the positioning surfaces 10 and 10'.
, and fix the workpiece to the circular table board 13 using the metal fittings 20.

Thereafter, the jig of the present invention is removed and the workpiece 19 is rounded as shown by the broken line.

As described above, as an embodiment of the present invention, a positioning method for R processing using a circular table board 13 with an outer diameter of about 150 mm has been described.
For 0mm and 300mm, positioning holes 5 and 6 for 25orMt and positioning holes 7 and 8 for 300wn, respectively.
Positioning can be easily performed by inserting positioning pins 16 and 17 into.

Furthermore, in the case of any circular table board with an outside diameter other than 250 mm and 300 mm, by setting the corresponding locating pin hole at the required position and inserting the locating pin, any circular table board of any outside diameter can be used. Not only is it possible to position the workpiece for R machining, but also positioning for R machining using an indexing machine or the like is possible.

As described above, according to the present invention, with an extremely simple mechanism,
It is possible to accurately position any radius R in a short time, and especially when machining a large number of R, there is no wasted time for positioning, and it is compatible, making it extremely suitable for accurate positioning. Beneficial.

[Brief explanation of drawings]

Figure 1 is a perspective view showing the workpiece subjected to R machining, Figure 2
The figure is a perspective view showing an embodiment of the present invention, and FIG. 3 is a perspective view showing the positioning state of a workpiece according to the embodiment of the present invention. In the figure, 1 is a guide plate, 2 is a groove, 3 to 8 are positioning pin holes, 9 is a positioning plate, 10 and 10' are positioning surfaces, 11 is a base line, 12 is a scale, 13 is a circular table board, and 14 is a The center of rotation of the circular table, 15 is an intersection point, 16 and 17 are positioning pins, 18 is a fixing knob, 19 is a workpiece to be cut, and 20 is a metal fitting.

Claims (1)

[Scope of utility model registration request] It is removable from the circular table board and has a groove in the radial direction of the circular table board, and the distance is the sum of the radius of the circular table board and the radius of the positioning bin, (,
Is it possible to locate the position in the groove of a guide plate having a positioning pin hole into which the positioning pin can be inserted at a position equidistant from the center line of the groove? The guide plate and the positioning plate slide, and the tip of the positioning plate in the direction of the center of the circular table opens into a Y-shape with an arbitrary angle 2α at 7 equal intervals with respect to the sliding direction, and the guide plate and the positioning plate have scales of pitch cosecα. A positioning jig for R machining, characterized in that it is provided with a base line corresponding to the base line and is configured to be fixed at an arbitrary position.