JP2579145Y2 - Fluid pressure actuator - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a fluid pressure actuator.

[0002]

2. Description of the Related Art A known fluid pressure actuator uses a shock absorber as a table stopping means as described in Japanese Utility Model Laid-Open Publication No. 61-191506.

[0003]

The present invention is to provide a Therefore, the conventional technique
In operation, shock absorbers are relatively large and expensive products
The entire actuator is relatively large and expensive
Relatively large shock absorbers
If you do not attach the sober to the table exactly,
Installation work takes a lot of trouble and time
There is a disadvantage, tooth be after the installation of the shock absorber,
The inability to adjust the stop position of the table
is there.

[0004]

This invention SUMMARY OF THE INVENTION In view of the above points, which has been devised to solve the problems found in the prior art, in order to achieve this object, subjected to fluid pressure
A table that moves relative to the body by feeding,
Table stop means for stopping table movement
And the table stopping means is provided on the body.
A stopper, and a method of moving the stopper and the table
Stopper provided on the table so as to face in opposite directions
Part and a screw hole formed in the one stopper part.
A screw that is screwed so that the position can be adjusted and comes into contact with the other stopper
A bolt-shaped member for adjusting the cable stop position.
When the stopper is directed to the outside of the fluid pressure actuator
Provided is a fluid pressure actuator characterized by being provided so as to protrude .

[0005]

[Action] Fluid pressure actuator of the present invention having the above configuration
The stopper part is either a body or a table.
Is an overhang provided in such a simple structure
Table stop means is constituted by a combination of overhangs
In this way, relatively small and inexpensive table stopping means can be provided.
It becomes possible to configure. Also formed on the stopper
Bolt-shaped member for adjusting the table stop position is screwed into the screw hole.
The bolt is screwed so that the position can be adjusted, and this bolt-shaped member is
This bolt is used because it comes into contact with the topper.
Stop the table by changing the screw position of the member
The position can be adjusted arbitrarily.

Further, each stopper portion is provided with the fluid pressure actuator.
Is provided so as to protrude outside the data
Space for adjusting the screw position of the bolt-shaped member.
And a stopper is provided adjacent to the piston.
To minimize the generation of moments.
Can be.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

As shown in FIGS. 1 to 3, a cylinder chamber 2 is provided in a body 1 and a piston 3 is reciprocally accommodated in the cylinder chamber 2. A table 4 is arranged outside the body 1, and the piston 3 and the table 4 are connected via a rod 5 and a moving end block 6. The table 4 and the tip block 6 may be an integral body. Table 4, this table 4
A linear guide 8 fixed to the lower surface of, depending on the guide 7 composed of a combination of guide rails 9 provided on the upper surface of the ball di 1
Thus, the piston 3 is supported so as to be able to reciprocate in the same direction as the direction in which the piston 3 reciprocates. And piping block 10 on the fixed side is fixed to the body 1, a pair of pressure supply ports 11 and 12 are opened in the piping block 10. The body 1 and the piping block 10 may be integrated. And supplying fluid pressure such as compressed air alternately to the front and rear of the piston 3 of the cylinder chamber 2 from the pressure supply port 11, the piston 3 reciprocates, table 4 which via a rod 5 and the tip block 6 Reciprocates following

[0009] the upper surface of the body 1, the external <br/> an stopper portion first flared portion 13 of the hydraulic actuator
It is integrally molded upwards which is one direction toward the
Cage, also on the side surface of the table 4, the second and third projecting portions 14 and 15 so as to sandwich the first flared portion 13 is the other of the stopper portion of the hydraulic actuator external
Is another direction toward the toward laterally integrally molded
Cage, these overhangs 13, 14, 15 a table stopping means for stopping the movement of the table 4 is constructed. Also are the second and third projecting portions 14, 15 Niso <br/> Resolution, are threaded holes (not shown) is formed, into the screw hole
Screw-in bolts 16, 17 which are bolt-like members are screwed in , and these screw-in bolts 16, 17 constitute table stroke adjusting means for adjusting the stroke of the table 4. Reference numerals 18 and 19 are lock nuts, and the lock nuts 18 and 19 are tightened.
The screwing positions of the bolts 16 and 17 are fixed. The table stopping means including the overhang portions 13, 14, 15 is disposed substantially directly above the cylinder chamber 2, that is, beside the thrust center of the piston 3.

In the fluid pressure actuator having the above-described structure, for example, the body 1 is fixed to a pedestal (not shown), and a machine tool (not shown) is mounted on the table 4 to reciprocate the machine tool. , Overhang parts 13, 14,
The movement of the table 4 is stopped by the table stopping means 15. Each of the overhang portions 13, 14, and 15 is a protrusion integrally protruded from the body 1 or the table 4. Since the table stop means is constituted by such a protrusion having a simple structure, it is compared with the prior art. It has the characteristics of being small, inexpensive, and easy to process and of providing high accuracy. Further, since the table stroke adjusting means including the screw bolts 16 and 17 is provided in the overhang portions 14 and 15, the stop position of the table 4 can be arbitrarily adjusted by adjusting the screwing amount. Lock nuts 18 and 19 are attached to bolts 16 and 17.
To the bolts 16 and 17
Even if the impact due to the contact with the
To prevent the displacement of the screw positions of the screws 16 and 17
be able to. In addition, each overhang portion 13, 14, 15
Installed so that it protrudes outward from the fluid pressure actuator.
The screwing of the screw bolts 16 and 17
This allows for space for position adjustment work, which
Operability can be improved. That is,
The space extends from above the fluid pressure actuator to the side
Is provided at a substantially right angle,
Screw bolts 16 and 17 and lock nuts 18 and 19
Insert a jig such as a spanner into this space when rotating
Easy to insert and rotate the jig at a stretch over a wide angle
Can improve workability.
Things. In order placing the table stop means consisting of the overhang 13, 14, 15 on the side of the thrust center of the piston 3, it is possible to reduce the moment M by reducing the distance L in the following Equation A, thus stopping the table 4 The displacement can be prevented.

M = L × F (A) where L is the thrust center of the bolts 16 and 17 and the piston 3
And F is the thrust of the piston 3.

[0012] The fluid pressure actuator having the above-described structure may be modified as described below . a) As shown in FIG. 4, shock absorbing members 20 and 21 for absorbing a shock at the time of contact are attached to the first overhang portion 13. b) As shown in FIG.
The shock absorbing members 20 and 21 for absorbing the shock at the time of contact are attached. The shock absorbing member 20, common to the items a and b,
Urethane rubber is suitable for the material 21. c) Although the screwing bolts 16 and 17 have a large diameter head as shown in FIGS. 1 to 5, even if they do not have a large diameter head as shown in FIG. good. d) The overhang portions 13, 14, 15 may be formed separately from the body 1 or the table 4. FIG. 7 shows an example in which the first overhang portion 13 is provided separately from the body 1 and fixed to the bolt 22.

[0013]

[Effects of the Invention] The present invention has the following effects.

[0014] That is, the fluid of the present invention having the above configuration
In the pressure actuator, first, the table stopping means
Because it is composed of a combination of stoppers
The table stopping means is a shock absorber
Constitutes a small and inexpensive table stopping means as compared with
And can be taped into the screw holes formed in the stopper.
Screw position adjustment of the bolt-shaped member for adjusting the stop position
Screw this bolt-shaped member into contact with the other stopper.
The screw-in position of this bolt-shaped member
The stop position of the table by changing
Can be clause You.

[0015] Furthermore, each stopper portion is
It is provided so that it projects outside the tutor.
To adjust the screwing position of the bolt-shaped member
Time, which improves its workability
Can be

[Brief description of the drawings]

FIG. 1 is a perspective view of a hydraulic actuator according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the actuator.

FIG. 3 is a perspective view showing the operation of the actuator.

FIG. 4 is a partially cutaway plan view of a main part of a fluid pressure actuator according to another embodiment of the present invention.

FIG. 5 is a partially cutaway plan view of a main part of a fluid pressure actuator according to another embodiment of the present invention.

FIG. 6 is a partially cutaway plan view of a main part of a fluid pressure actuator according to another embodiment of the present invention.

FIG. 7 is a perspective view of a hydraulic actuator according to another embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Body 2 Cylinder chamber 3 Piston 4 Table 5 Rod 6 Tip block 7 Guide 8 Linear guide 9 Guide rail 10 Piping block 11, 12 Pressure supply port 13 First overhanging part (stopper part) 14 Second overhanging part (stopper part) ) 15 third extending portion (stopper portion) 16, 17 threaded bolts (bolt-like member) 18 and 19 lock nut 20, 21 shock absorbing member 22 volts

Claims (1)

(57) [Scope of request for utility model registration] 1. The body (1) is supplied by supplying fluid pressure.
A table (4) that moves relative to each other, and the table (4)
Table stopping means for stopping the movement of the table, wherein the table stopping means is provided on the body (1).
The stopper (13), the stopper (13) and the front
The table (4) is opposed to the moving direction of the table (4).
Stoppers (14) and (15) provided on the bull (4)
And the stopper portions (14) and (15).
It is screwed into the screw hole so that the screwing position can be adjusted, and the other stopper
Bolt for adjusting the stop position of the table that contacts the part (13)
(16) and (17), and each of the stoppers (13) (14) (15) is
Is provided so as to project outside the pressure actuator.
Hydraulic actuator, characterized by being.