JPS6055253B2 - Sine bar type tilting mechanism for flexible holding jig - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field of the Invention The present invention relates to a workholding jig for fine manual work, and more particularly to a tilting mechanism for a chucking head that provides a stable predetermined posture to a workpiece with a multi-head indexing head. .

(b) Background of the technology In many cases, fine manual work in the manufacturing process of mass-produced electronic components is performed by holding the workpiece in the proper shape with a holding jig, and the workpiece posture accompanying the indexing motion of the multi-headed head is often performed. It has been desired to provide a simple and highly reliable workpiece regulating means that uniformly regulates.

(c) Prior art and problems Most of the methods for controlling the inward tilt of the posture regulating means rely on angle adjustment using cantilever hinges and angle fixing means using bolt tightening, which lacks workability in adjustment and also poses problems in angle reliability. It was hot.

(d) Purpose of the Invention In view of the above-mentioned problems, it is an object of the present invention to provide a tilting mechanism for a chucking head of a flexible holding jig that has high angle reliability and excellent adjustment workability. .

(e) Structure of the Invention The present invention provides a holding jig equipped with means for imparting horizontal rotation and arbitrary inclination to a chucked workpiece, in which a first substrate that rotates horizontally has an opposing surface orthogonal to the substrate surface. A pair of brackets are formed, a concentric fulcrum pin parallel to the board surface is planted in the brackets, and a second board on which the chucking head is to be mounted is mounted so that the parallel side surface on one edge side of the board is attached to the bracket. The second board is screwed by being formed so that it can be fitted into the opposing surfaces without play, and by providing an elongated hole that extends through the parallel side surface and is parallel to the board surface and has a width that matches the fulcrum pin. An angular pin engraved on the upper surface of the bracket of the first substrate is engaged with the first substrate in a shape of a shape, and a concentric angle pin with the same diameter is planted on the opposite side of the long hole on the parallel side of the second substrate. The invention is characterized in that a predetermined inclination angle of the second substrate is set by resting in a pair of notch grooves.

(f) Embodiments of the Invention Preferred embodiments of the invention will now be described with reference to the drawings.

Fig. 1 is a partially sectional side view of a two-head flexible holding jig, Fig. 2 is a perspective explanatory view of one embodiment of the tilting mechanism of the jig, and Fig. 3 is a perspective explanatory diagram of another embodiment. And,
1 is a chucking head, 2 is a tilting table (second board), 3
is a turntable (first board), 4 is a stand, 5 is a pallet,
6 is the fulcrum pin (first sine bar), 7 is the rest pin (second sine bar)
(sine bar), 8 indicates a parallel long hole, Vn indicates a resting V groove, and W indicates a workpiece. In FIG. 1, a chucking head 1 that grips a workpiece W is a stand 4 set up on a conveying pallet 5.
The rotary table 3 rotates around , and is placed on a child rotary table at a symmetrical position with respect to the center of rotation on the inclined table 2 which extends to opposite sides of the rotary table 3 .

The present invention provides an accurate and highly workable angle setting means for the tilt table 2, and one embodiment thereof will be described in detail with reference to the perspective view shown in FIG. 2. That is, on the top surface of the turntable 3,
A wide groove in which the outer width of the bay 22 of the inclined table 2 having a straight reference surface 21 and a fork-shaped parallel arm 22 is regulated and the straight surface can be sufficiently sunk. 31, and the inclined table 2 is engaged with the groove from both sides. Completely symmetrical elongated holes 8 of predetermined dimensions are provided in the side surfaces of the pair of fork-shaped arms 22, and the upper surface of the elongated holes is formed so as to be completely parallel to the straight reference plane 21 and maintain a known dimension. has been done. and,. A fulcrum pin (first sine bar) having exactly the same diameter and concentricity is projected to a position symmetrical to the center of rotation of the pair of side walls 32 of the rotating table 3 (only one is shown in the figure) and engaged with the elongated hole 8. let Further, a resting pin 7 (second sine bar) having the same diameter and concentricity is installed at a specified distance from the elongated hole 8 on the outer end surface of the base of the fork-like arm 22, and the resting pin 7 is connected to the rotary table. A plurality of resting V grooves n (for example, V
1, V2).
In addition, 33 in the figure is the relief of the tip of the fork-like arm of l when the inclined table is provided. The tilting mechanism of the present invention as explained above is stabilized according to the known sine bar theory by eliminating variations in the diameter of the first sine bar, the diameter of the second sine bar, and the X-Z coordinates of the resting groove from head to head. An angle can be obtained, and the angle can be converted in one operation using the elongated hole.
In the case of another embodiment shown in FIG. 3, the rotary table (first substrate)
A tilting table (
It has a structure in which a fork-like arm 22 of a second board 52 is disposed, a fulcrum pin (first sine bar) 6, a resting pin (second
The configuration of the sine bar) 7, the parallel elongated hole 8, and the rest groove ■n is the same as in FIG. 2, and the function is also exactly the same. (g) Effects of the Invention Although the present invention has a simple structure, it is capable of extremely accurate and stable angle conversion with good workability, and therefore a tilting mechanism, which is a functional element of a multi-head holding jig, can be provided at a low cost.

[Brief explanation of the drawing]

FIG. 1 is a side view of the two-headed holding jig, and FIGS. 2 and 3 are perspective views of the tilting mechanism of the jig. In the figure, 1 is a chucking head, 2 is a tilting table (second board), 3 is a rotating table (first board), 4 is a stand, and 5 is a chucking head.
6 is a pallet, 6 is a fulcrum pin (first sine bar), 7 is a resting pin (second sine bar), 8 is a parallel long hole, Vn is a resting groove, and W is a workpiece.

Claims (1)

[Claims] 1. In a holding jig equipped with a means for imparting horizontal rotation and arbitrary inclination to a chucked workpiece, a pair of brackets having opposing surfaces perpendicular to the substrate surface are formed on a first substrate that rotates horizontally, and A concentric fulcrum pin parallel to the substrate surface is planted in the bracket, and the second substrate on which the chucking head is to be mounted can be inserted into the bracket without play between the parallel surfaces on one edge side of the substrate. The second substrate is engaged with the first substrate in a spiral manner by forming an elongated hole through the parallel side surface and parallel to the substrate surface and having a width matching the fulcrum pin. and further resting an angular pin of the same diameter and concentricity installed on the parallel side surface of the second board opposite to the elongated hole in at least one pair of notch grooves carved in the upper surface of the bracket of the first board. 1. A sine bar type tilting mechanism for a flexible holding jig, characterized in that a predetermined tilting angle of a second substrate is set according to the following.