JPS63283844A - Index - Google Patents

Abstract

PURPOSE:To index a table equally and reliably into two, in an index to be employed for assembling of parts, by inducing rotation of a guideboard through a cam board and locking a sliding rod being supported on the guideboard when the guideboard is rotated by 180 deg.. CONSTITUTION:When a piston rod 3 advances, a lower roller 13b is moved along an inclined face 14a of a cam board 14 because the cam board 14 is stopped by a stopper 15, so as to rotate a guideboard 7 for supporting the sliding rod 10 to the upper portion of a shaft body through a roller 13a together with a spindle 4 thus starting rotation of a table. As the rod 3 advances furthermore, the shaft body 13 moves while being restricted by the cam board 14 so as to advance the sliding rod 10 in an elongated groove 11, and the guideboard 7 passes through 90 deg. position while being pushed by the shaft body 13 and rotating around the spindle 4. Consequently, the shaft body 13 separates from the inclined face 14a of the cam board 13, and when the rod 3 advances furthermore, the guideboard 7 rotates by 180 deg. as shown by dot and dash lines. Upon further advance of the rod 3, a projection 10b projects into a receiving member 15 and fitted therewith so as to stop rotation of the guideboard 7 thus stopping the table.

Description

Detailed Description of the Invention (a) Technical field The present invention relates to an index (21 indexing stand) used for various purposes such as assembling and processing parts, etc., and particularly relates to an index with a simple configuration for indexing into two equal parts. This invention relates to a compact index that can be performed at high speed and with high accuracy.

(B) Prior art When performing indexing into two equal parts using a conventional cylinder-driven index, the rotational angle of the table is large (that is, the table rotates 180 degrees), so the rotation stop position must be accurately positioned. Not only is it difficult, but
If this is done at high speed, the inertia will also be large, and the table will be 18
Since the impact when stopping at the 0 degree rotation position is large,
There is a risk of wear and tear on the stop mechanism, and the mechanism is more complicated when indexing into small numbers.

(C) Disclosure of the Invention The present invention eliminates the above-mentioned conventional drawbacks by rotating the table shaft using a new method, and enables high-speed and bisecting indexing, which has been in increasing demand recently. This paper proposes an index dedicated to bisection that can be performed with high precision.

That is, in the present invention, a rotating main shaft with an index table attached to the head end is suspended above the moving direction of the piston rod of a cylinder installed toward the inside of the container, and the lower end of the main shaft is arranged uniformly on the lower surface in the length direction. The guide plate is configured to be horizontally rotatable together with the table by supporting and fixing the upper center of the elongated guide plate in which a guide groove is formed, and a long groove parallel to the groove is formed in the guide groove F of the guide plate. The provided sliding rod is slidably inserted and supported, and at both front and rear ends of the sliding rod there are protrusions shaped so that they can be fitted into receiving members installed from the front and rear walls of the vessel inward. A base end of an arm having a shaft erected at the tip is pivoted to the tip of the piston rod so as to be able to rotate horizontally, and the upper part of the shaft at the tip of the arm is in the long groove of the sliding rod. are movably fitted together, and an elongated cam plate is arranged below the sliding rod and at the same height as the lower part of the shaft, and one end of the cam plate is erected on the cylinder side. The rotation range of the cam plate is restricted by a stopper, and the other end of the cam plate is urged to protrude upward in the direction of movement of the piston rod by a spring in contact with the stopper, and the protrusion of the cam plate is One side of the other end relates to an index formed into an inclined surface that contacts the lower part of the shaft at the tip of the L arm and pushes the shaft to the side opposite to the stopper.

Hereinafter, embodiments of the index of the present invention will be described with reference to the drawings.

(d) Embodiment FIG. 1 is a cross-sectional side view showing an example of the internal mechanism of the index of the present invention, l is a pneumatic or hydraulic cylinder attached to the outside of the container body 2, and its piston rod 3 is a 2, and the direction in which the rod 3 moves] is a rotary main shaft which has an index table 5 fixed to its head end and whose middle part is rotatably supported by a bearing 6 provided on the body 2 and the plate. 4
is hanging down.

7 attaches a ring 8 and a key 9 to the lower end of the main shaft 4 at the center of the upper surface.
This is a thick and slender guide plate that is fixedly attached and horizontally rotatable together with the main shaft 4.A dovetail groove 7a is formed on the lower surface of the guide plate 7 along its length, and in the groove 7a is a dovetail groove 7a. A sliding rod 10 having a guide groove 11 parallel to the political situation 7a formed in the center of the lower surface is slidably inserted and supported, and the sliding rod 10 has approximately the same length as the L guide plate 7, and its Both front and rear ends have vessels l
Taper-shaped protrusions 10a and 10b are formed which can be fitted into a receiving member 17 provided toward the inside of the front wall.

Reference numeral 12 designates an arm whose base end is pivotally supported by the tip of the piston rod 3 and is pivotable in the horizontal direction.At the upper side of the tip of the arm 12, an upper portion 13a is movably fitted into the long groove 11, and a lower portion 13b is described later. A shaft body 13 is provided upright in contact with the arc-shaped side surface 14a of the cam plate 14. In addition, in the figure, the shaft body 1
3, the upper and lower parts 13a and 13b are formed into separate roller shapes with different diameters, but the invention is not limited to this, and at least the upper part is formed by the long groove 11 of the sliding rod 10.
It can also be configured with a single thick shaft that is slidably fitted inside.

Reference numeral 14 denotes an elongated cam plate disposed below the sliding rod lO and at the same height as the lower roller 13b of the shaft body 13, and one end of the cam plate 14 is erected on the cylinder l side. The rotation range is regulated by the stopper 15, and the end is pulled by the coil spring 16 and urged to always come into contact with the stopper 15. This causes the other end of the cam plate 14 to move upward in the direction of movement of the piston rod 3. Moreover, one side of the protruding portion of the cam plate 14 with respect to the rod 3 traveling direction contacts the shaft 13 (particularly the lower roller 13a) at the tip of the arm 12, causing the shaft to protrude. 13 in the direction opposite to the stopper 15
4a (arc-shaped in the figure).

Next, the operation of this device will be explained with reference to FIG. 4. When the piston rod 3 is at the retreating end, the upper roller 13a of the shaft body 13 at the tip of the arm 12 connected to the rod 3 is moved toward the sliding rod 10. Fits into the rear end (tob side) of the long groove 11,
As a result, the arm 12 is in a straight line with the rod 3, the guide plate 7 is also parallel to the rod 3, and the cam plate 14 is
The base end touches the stopper 15 and the tip slope side surface 14a
is located on the lower side of the sliding rod lO so as to obliquely intersect with the long groove 11 of the rod lO, and is in contact with the lower roller 13b at the tip of the arm 12 and a part of the cam plate inclined surface 14a (
Figure 4 (b)).

Therefore, when the piston rod 3 moves forward, the shaft lower roller 13b is forcibly moved along the cam plate inclined surface 14a to the side opposite to the stopper 15 since the cam plate 14 is not moved by the stopper 15 (in the figure, the shaft body lower roller 13b 3 to the right in the traveling direction), the arm 12 is bent from the tip of the rod 3, and at the same time the guide plate 7 supporting the sliding rod 10 is forcibly rotated together with the main shaft 4 by the shaft upper roller 13a, and the arm 12 is bent from the tip of the rod 3. 5 starts rotating (Figure 4 (b)).

As the rod 3 moves forward, the shaft body 13 is regulated by the cam plate 14 and moves laterally, and the sliding rod 10 also moves toward the long groove 11.
As the rod 3 moves forward, the bending angle of the arm 12 with respect to the rod 3 gradually increases.

The guide plate 7 is pushed by the shaft body 13 and rotates around the main shaft 4, passing through a position where the rotation angle is 90° (that is, the guide plate 7 is perpendicular to the rod 3).

The arm 12 has such a length that it maintains an obtuse angle with respect to the rod 3 even when the guide plate 7 is at the 90° rotation angle position, so that the shaft body 13 remains at the center of the L-leg long groove 11 even at this position. Please do not move until then.

When the guide plate 7 passes through the 90' rotation position, the shaft body 13 separates from the cam plate inclined surface 14a, and the rod 3 advances further, so that the shaft body 13 returns to the above-mentioned original position in the long groove 11 (
10b side), and as a result, a force is exerted on the arm 12 to make it straight with the rod 3, and at the same time the guide plate 7
is pushed by the shaft body 13 and rotates further, eventually turning 180 degrees.
This results in 6 rotations (dashed line in Figure 4 (b)).

When the guide plate 7 rotates 1000 times, the arm 12 moves to the rod 3.
As the rod 3 moves further forward, the shaft body 13 presses the inner end of the long groove IT, causing the sliding rod 10 to slide forward, thereby creating a tapered shape at the front end of the sliding rod 10. The protruding portion 10b is fitted into the receiving member 18 on the inner side of the front wall of the container body 2, and the rotation of the guide plate 7 is stopped (FIG. 4(c)).

When the guide plate 7 stops rotating 1000 times, the upper table 5 fixed via the main shaft 4 rotates exactly 1000 times and stops.

Next, when the piston rod 3 turns into a double motion and moves backward, only the shaft 13 is pulled by the arm 12 and moves backward inside the long groove 11, leaving the sliding rod 10 as it is. However, as the rod 3 moves back further, the shaft body 13 rotates around the cam shaft 18 so as to push away the cam plate 143 against the spring 16, and the inner rear end of the long groove 11 (i.e., the side 10a) (FIG. 4(d)).

Then, when the rod 3 continues to retreat, the shaft body 13 pulls the sliding rod lO, disengaging the distal end protrusion 10b from the fitting with the receiving member 17, and returning to the original position δ (FIG. 4 (a)). The rod 3 moves forward again and repeats the above movement in sequence.

Therefore, even if this reciprocating movement of the row and door 3 is made to occur rapidly, the rotational feeding of the guide plate 7 and the stopping and holding at the 180° rotation position are reliably performed.

In the figure, the guide plate 7 is stopped for 1000 rotations by inserting the tip of the sliding rod 10 into the receiving member 17 provided on the front wall of the vessel body 2. It may be configured such that the rear end of the sliding rod 10 projects into the receiving member at the retracted end of the rod 3 after installation.

In this way, the table 5 rotating together with the guide plate 7 is reliably rotated intermittently in a fixed direction by 1800 degrees.
The indexing into two parts is performed accurately and at high speed.

(e) Effects of the invention The index of the invention is constructed as described above, and by using a cam plate, it becomes a guide plate (therefore, an index table).
When the table rotates 180 degrees, the sliding rod supported by the guide plate that is integral with the table slides and locks, thereby stopping the rotation. , it is possible to reliably and quickly divide into two equal parts.

Furthermore, since the shaft body that is movably fitted into the long groove of the L2 sliding rod and rotates the guide plate is connected to the piston rod via the arm, the inertia caused by the rotation of the table is eliminated. , the table can be stopped extremely smoothly at the 180° rotation position.As with the conventional bisecting table, the rotation angle of the table is large, so if you try to stop the table all at once, a large shock will be applied and the equipment will be damaged. There is no need to worry about damage.

As described above, the index of the present invention has a simple structure and reliable operation, can perform indexing into two equal parts at high speed and with high precision, and the indexing machine as a whole can be downsized, so it can be used in various fields. can be expected.

[Brief explanation of drawings]

FIG. 1 is a side view showing an example of the internal mechanism of the index of the present invention, FIG. 2 is a plan view of the same, and FIG. 3 is an exploded perspective view of the main parts.
FIGS. 4(a) to 4(d) are action explanatory diagrams. Code explanation

Claims (1)

[Claims] A rotating main shaft with an index table attached to the head end is suspended above the moving direction of the piston rod of the cylinder installed toward the inside of the vessel, and the lower end of the main shaft has a guide groove formed uniformly in the length direction on the lower surface. The guide plate is configured to be horizontally rotatable together with the table by supporting and fixing the upper center part of the elongated guide plate, and a sliding rod having a long groove parallel to the groove is provided in the guide groove of the guide plate. The sliding rod is fitted and supported in a freely slidable manner, and at both the front and rear ends of the sliding rod are integrally formed protrusions having a shape that can be fitted into a receiving member that is attached inward from one of the front and rear walls of the container body; At the tip of the piston rod, the base end of an arm with a shaft erected at the tip is pivoted so as to be able to rotate horizontally.
The upper part of the shaft at the tip of the arm is movably fitted in the long groove of the sliding rod, and an elongated cam plate is arranged below the sliding rod and at the same height as the lower part of the shaft. One end of the cam plate has its rotation range regulated by a stopper installed upright on the cylinder side, and the other end of the cam plate is in contact with the stopper due to a spring, so that the other end of the cam plate is rotated in the direction of movement of the piston rod. The cam plate is biased to protrude upward, and one side of the protruding other end of the cam plate is inclined such that it contacts the lower part of the shaft at the tip of the arm and pushes the shaft to the side opposite to the stopper. An index characterized by being formed on a surface.