JPH0141544Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a center position variable device used as a jig when, for example, assembling parts by aligning the centers of the parts.

[Technical background of the invention and its problems] When fitting or attaching a second part to a fixedly provided first part, the center of the second part is aligned with the center of the first part and assembled. movably supporting the second component if necessary;
It is necessary to move the second part to match the center of the first part.

Therefore, conventionally, a center position variable device as shown in FIGS. 1 and 2 has been used to center the parts.

In Figure 1 A and B, 1 is the base, which is a fixed stand, and 2
is the centering head which is a movable table. A centering head 2 is movably supported on the base 1 by a sliding mechanism 3. Also, base 1
Spring receivers 4, 4 are provided on the left and right sides of the centering head 2, and compression springs 5, 5 are provided between the spring receivers 4, 4 and the centering head 2.
is mediated. These compression springs 5, 5 maintain balance and keep the centering head 2 in the center.

FIGS. 2A and 2B show the centering head 2 being held against the base 1 via the sliding mechanism 3, the centering head 2 provided with a conical groove 6, and the steel ball 7 provided on the head 1 being held by the spring 8. It is adapted to come into pressure contact with the conical groove 6. Therefore, the steel ball 7 pressed by the spring 8 engages with the conical groove 6, thereby keeping the centering head 2 balanced at the center.

Therefore, when a part is chucked to the centering head 2 and this part is assembled to another part, centering can be performed by moving the centering head 2.
However, in the case of Fig. 1, the balance of the centering head 2 is maintained by the compression springs 5, 5, which has the disadvantage that the center position is unstable and accuracy cannot be obtained. for,
Due to the engagement and disengagement between the conical groove 6 and the steel ball 7, the centering head 2 does not slide smoothly, and it is impossible to change the center position.

[Purpose of the invention] This invention was made with attention to the above-mentioned circumstances, and its purpose is to enable smooth sliding of the movable base with respect to the fixed base, and to easily finely adjust the center position. The purpose of this invention is to provide a center position variable device that is capable of changing the center position.

[Summary of the invention] A movable base supported so as to be linearly movable relative to a fixed base is moved linearly by a rotary lever provided at both ends in the direction of movement, and an adjustment screw and biasing spring screwed into the rotary lever. By making it possible to arbitrarily adjust the center position of the movable base, it is possible to eliminate misalignment during assembly of parts, etc.

[Example of the invention] This invention will be described below based on an example shown in the drawings. In FIGS. 3 to 6, 11 is a base which is a fixed table, and 12 is a centering head which is a movable table. The base 11 and the centering head 12 have a rectangular shape, and the centering head 12 is formed to be slightly narrower than the base 11. A concave groove 13 is formed in the center of the joint surface of the base 11 in the lateral direction thereof, and a protrusion 14 that is inserted into the concave groove 13 is formed on the centering head 12 facing this.
A sliding mechanism 15 is provided on the opposing surface of the groove 13 and the protrusion 14, and the centering head 12 is supported with respect to the base 11 so as to be linearly movable. Further, center position adjustment mechanisms 16A, 1 are provided at both ends of the centering head 12 in the moving direction.
6B is provided. Since these center position adjustment mechanisms 16A and 16B have the same structure, one center position adjustment mechanism 16A side will be explained. Reference numerals 17 and 17 are support stands provided at both ends of the centering head 12, and these support stands 1
A gap 18 is formed between 7 and 17. A rotary lever 19A is interposed in this gap 18, and the longitudinally intermediate portion of this rotary lever 19A is rotatably connected to the supports 17, 17 by pins 20. That is, the rotary lever 19A is rotatable in the direction of movement of the centering head 12, with one end 19a facing the end surface of the base 11 and the other end 19b facing the centering head 12.
are facing the end faces of each. Furthermore, a stopper 2 consisting of a bolt for adjusting the position of the rotary lever 19A in parallel is provided at the midpoint of the rotary lever 19A.
1 is screwed into the centering head 12, and the tip of this stopper 21 is in contact with the end surface of the centering head 12. Also,
An adjusting screw 2 is attached to one end 19a of the rotating lever 19A.
2A is screwed in, the tip of which is in contact with the end surface of the base 11, and the other end 19b is provided with a screw 25, for example, a ball plunger, which has a biasing spring 23 inside. It is pressed against the end surface of the centering head 12 via a ball 24 provided at the tip. Therefore,
The rotating lever 19A is rotated by the restoring force of the biasing spring 23.
The other end 19b is urged in a direction away from the end surface of the centering head 12.

Therefore, as shown in FIG. 5, when the center 11a of the base 11 and the center 12a of the centering head 12 are aligned, the rotating levers 19A and 19B on the upper and lower sides in the figure It is held parallel to the end face. From this state, as shown in FIG. 6, when the lower adjusting screw 22B is screwed in and protruded, the lower rotating lever 19B rotates counterclockwise about the pin 20 and lowers. The centering head 12 is pushed upward by the other end 19b of the side pivot lever 19B. Therefore, centering head 12 with respect to base 11
moves upward, that is, in the direction of arrow A, and moves to the center 12.
a is deviated upward from the center 11a of the base 11. When this deviation amount is e, the upper rotating lever 1
A gap e is created between the adjusting screw 22A of 9A and the base 11, which is the same as the amount of deviation e. At this time, the upper and lower rotating levers 19A, 19B are biased by the biasing springs 23,
23 always applies a biasing force toward the center, so when the lower adjusting screw 22B is loosened and retracted, the lower rotating lever 19B is moved toward the pin 20 by the biasing force of the biasing spring 23. The centering head 12 rotates clockwise using the centering head as a fulcrum, and the centering head 12 returns to the
As shown in the figure, the center 11a of the base 11 and the center 12a of the centering head 12 coincide.

In this manner, the center 12a of the centering head 12 can be varied by adjusting the adjustment screws 22A, 22B of the center position adjustment mechanisms 16A, 16B provided on the left and right sides of the centering head 12. For this reason, when the centering head 12 is assembled with a chuck provided on the upper or lower surface of the centering head 12 to chuck a component, and to assemble this component in alignment with the center of other fixedly provided components, Position adjustment mechanism 1
6A and 16B allow mutual centering of the parts. Therefore, it is possible to eliminate horizontal variations when assembling parts.

[Effects of the invention] As explained above, according to this invention, the movable base can be smoothly slid with respect to the fixed base, and the center position of the movable base can be arbitrarily and precisely adjusted by operating the adjustment screw. Can be adjusted. Therefore, when used as a parts assembly jig, it becomes easy to center the parts, and there is an effect that variations in parts and devices can be canceled.

[Brief explanation of the drawing]

1 and 2 show different conventional examples, A is a plan view, B is a side view, and FIGS. 3 to 6 show an embodiment of this invention.
FIG. 3 is a perspective view, FIG. 4 is a side view, and FIGS. 5 and 6 are partially sectional plan views for explaining the operation. 11... Base (fixed base), 12... Centering head (movable base), 19A, 19B... Rotating lever, 22A, 22B... Adjustment screw, 23...
Biasing spring, 21... stopper, 25... screw.

Claims (1)

[Scope of utility model registration request] A center position variable device that adjusts the mutual center positions of a pair of parts by restraining them on separate stands, which includes a fixed stand, and a device that is provided on the fixed stand via a sliding mechanism and that is parallel to the fixed stand. a movable base supported so as to be linearly movable in the horizontal direction; a support base provided on both end faces of the movable base in the moving direction; a plurality of rotating levers, one end of which faces the fixed base and the other end of which faces the respective end faces of the movable base;
An adjustment screw is screwed into one end of the rotating lever on the fixed base side, the tip of which touches the end face of the fixed base, and adjusts the center position of the movable base with respect to the fixed base depending on the screwing amount; a screw screwed into one end of the movable lever on the side of the movable base and interposed between the rotary lever and the movable base, and having a biasing spring therein that always biases the rotary lever in a direction away from the movable base; and a stopper that is screwed into the intermediate portion of the rotary lever and that sets the center alignment position of the movable base with respect to the fixed base by bringing the tip end surface into contact with both end faces of the movable base in the moving direction. A center position variable device characterized by: