JPS59201734A - Oil pressure coupling mechanism - Google Patents

Abstract

PURPOSE:To provide selectively for operating positions with many choices and thereby enhance the degree of utility, by boring a plurality of tapped holes around oil pressure supply ports, forming a pluality of oil pressure inputs around bolt hole in connection with said oil pressure supply ports, and by putting them together and coupling fast. CONSTITUTION:In a pallet P, oil pressure supply ports leading from an inner oil- pressure passage 10 are arranged longitudinally and transversely, and four tapped holes 2 are bored around these supply ports. In a jig HC, four oil pressure inputs 4 are bored around bolt hole into which a fastening bolt 11 is penetrated, and thereby the a passage 12 is got through. The jig HC is fastened onto the pallet P by said fastening bolt 11, and an operational piston 6 heaves one end 8a of a push metal 8 by turning it with a bolt 9 as fulcrum, so as to allow the other end 8b to fasten a work W onto the pallet P. The tapped holes 2 are set in co- ordination with bolt hole, and the oil pressure supply ports 1 are put in combination with the four oil pressure inputs 4.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hydraulic coupling mechanism, and its purpose is to provide a general-purpose hydraulic coupling mechanism capable of selecting a number of operating positions of hydraulic equipment coupled to one hydraulic supply port. The present invention aims to provide a hydraulic coupling mechanism with high performance.

For example, when using a machining center that can perform various processing on a workpiece from any angle.

Machine processing is performed by using a pallet and clamping and fixing various workpieces using hydraulic clamp cylinders for jigs on the pallet, but when the workpiece changes, the tightening position can be selected arbitrarily. Therefore, not only does it take time to tighten the workpiece, but it also has the disadvantage that the entire surface of the pallet cannot be used effectively. Therefore.

In order to set the hydraulic clamp cylinder for the jig at a position suitable for clamping the workpiece, it is proposed that the hydraulic pressure supply port and the tap holes for mounting the hydraulic clamp cylinder to the hydraulic clamp cylinder be provided on the entire surface of the pallet. Not only does machining cost increase, but the more hydraulic supply ports there are, the more sensitive the hydraulic system must be to maintain the confidentiality of the hydraulic system. It is necessary to deal with this by attaching the following.

Therefore, in order to secure as many hydraulic operation positions as possible with as few hydraulic supply ports as possible, the inventors of the present invention have conducted extensive research and found that in a model where a hydraulic clamp cylinder is attached to a pallet, there are multiple ( m) tapped holes are provided.

If a plurality of (n (hard)) hydraulic input ports are provided around the bolt hole that cooperates with the tap hole on the hydraulic clamp cylinder side and are connected to the hydraulic pressure supply ports, and the two are appropriately combined and connected,
It was discovered that the hydraulic operating position can be set according to the multiplier of the number of taps (m) and the number of hydraulic input ports n, and the present invention was completed.

The hydraulic coupling mechanism of the present invention is not only a coupling mechanism of a hydraulic clamp cylinder to such a pallet.

It can be widely applied as various hydraulic coupling mechanisms.

The present invention will be described in detail below based on representative examples shown in the accompanying drawings.

Fig. 1 is a plan view showing a part of the balent P, Fig. 2 is a plan view of the hydraulic clamp jig Hc, and Fig. 3 is a plan view of the hydraulic clamp jig 11c shown in Fig. 2 attached to the pallet P shown in Fig. 1. , is a cross-sectional explanatory view showing a state in which a workpiece W is tightened and fixed using the jig Hc.

As is clear from the drawing, hydraulic supply ports 1 and 1 are arranged in columns and rows from the internal hydraulic flow path 10 at intervals of 4J7β on the pallet P, and around each supply port 1 there is a radius l around the supply port 1. Four tapped holes 2 are bored at 90° intervals on the X-axis and Y-axis on the circumference.

Note that 7 is a spare tapped hole for the fulcrum bolt 9 of the presser foot 8.

On the other hand, the jig Hc has four hydraulic input ports 4 arranged at 90° intervals on the X-axis or Y-axis on a mountain surface with a radius β centered around the bolt hole 3 into which the fixing bolt 11 penetrates. 4...
The cylinder chamber 5, which has the center 6a of the actuating piston 6 at a position 2β apart from the bolt hole 3, and the hydraulic input port 4■ adjacent thereto communicate with each other through a flow path 12. (See Figure 3)
. Note that 14 is a piston return spring.

As shown in FIG. 3, such a jig Hc is mounted on a pallet P with a fixing bolt 11, and with the fulcrum bolt 9 as a fulcrum, the operating piston 6 pushes up one end 8a of the presser foot 8) and the other end 8b to hold the workpiece W. It is designed to be tightened and fixed on the bullet P.

In the present invention, the four tapped holes 2- and bolt holes 3 are
combination with hydraulic supply port 1 and four hydraulic input ports 4-
By combining these, it is possible to select and adopt 16 working piston center positions around each hydraulic pressure supply port 1 at intervals of J'Eβ, as shown in FIG. ■→〜■−■ in drawings
The former number indicates the adoption number of the hydraulic input ports 4■-■, and the latter number indicates the adoption number of the tapped holes 2■-■. That is, when the hydraulic input port 4■ of the jig 11c is connected to the hydraulic pressure supply port 1 and the bolt hole 3 of the jig 11c and the tapped hole 2■ are connected via the fixing bolt 11, the center position of the 3-operating piston is - Come to position ■. Therefore, hydraulic input port 4■
is connected to hydraulic pressure supply port 1.

When the jig 11c is rotated clockwise by 90° and the bolt holes 3 are successively connected to the tap holes 2■ to ■, the center position of the 1 working piston is located on the circumference of the radius 11 with the hydraulic supply port 1 as the center. It will turn by 90 degrees and move from ■-■ to ■-■. Similarly, if the hydraulic supply port 4■ is connected to the hydraulic supply port 1 and the bolt hole 3 is successively connected to the tap holes 2■ to ■, the center position of the 2-actuating piston will be at a radius of J57 with the hydraulic pressure supply port 1 as the center! Rotate 90 degrees on the circumference of ■−■～
It will move to ■-■, and in the case of hydraulic input port 4■, it will rotate in 90 degree increments on the circumference of 7'TIl with the hydraulic pressure supply port 1 as the center and move from ■-■ to ■-■. I will do it. In addition, in the case of hydraulic input port 4■, it is rotated by 90 degrees on the circumference of radius 3β with hydraulic pressure supply port 1 as the center.
4) It will move to -■.

In other words, the center position of the operating piston will be aligned with the base line in the pinch of J'fll.

As described above, since many different operating piston center positions can be set around one hydraulic pressure supply port 1, the fixing time for tightening for two workpiece changes can be shortened.

Furthermore, since an extremely small number of hydraulic supply ports are required to effectively utilize the entire surface of the pallet, not only can pallet manufacturing costs be reduced, but oil leakage that inevitably occurs even if the hydraulic supply ports are tightly sealed can be reduced as much as possible. Tightening has various advantages such as significantly improving stability.

The present invention has been explained above using 4 x 4 combinations, but by increasing or decreasing the number of tapped holes and hydraulic input ports to 2 or 4 or more, it is possible to create a corresponding number of combinations. Taking into account the spacing, the spacing between the tapped hole and the hydraulic supply port, the spacing between the hydraulic input port and the bolt hole, and the spacing between the bolt hole and the center position of the working piston, the design has been changed so that the set working piston center position does not overlap. It is desirable to

[Brief explanation of drawings]

Fig. 1 is a plan view of the pallet side according to the present invention, Fig. 2 is a plan view of the jig side, Fig. 3 is a sectional view showing their connection state, and Fig. 4 is an operating piston according to their connection mode. It is an explanatory view showing a position. 1-Hydraulic supply port, 2--tapped hole, 3--bolt hole. 4-hydraulic input port, 6-.-actuating piston. Patent applicant Tsudakoma Kogyo Co., Ltd. Representative patent attorney Koji Togawa

Claims (1)

[Claims] ■ Around the supply port l on the hydraulic pressure supply side, m fixing bolt holes 2 are provided at predetermined intervals on a circumference with a radius l centered on the supply port l.
・2-...- are provided, and a predetermined interval is placed around the bolt hole 3 on the hydraulic operation side that cooperates with whichever of the fixing bolt holes 2 and 2- the above-mentioned fixing bolt holes 2 and 2- are located on a circumference with a radius l around the bolt hole 3. n number of power ports 4, 4 are provided, and one of the rn fixing bolt holes 2, 2, ... on the hydraulic supply side is selectively connected to a bolt hole on the hydraulic operation side by a bolt. , any one of the n input ports 4 is selectively connected to one of the n input ports 4 for the supply rotor 1, so that n types of connections are made to each of the m connection points, and the output point on the hydraulic operation side 6 can be arranged in mxn ways on a concentric circle centered on one supply port 1 on the hydraulic pressure supply side. ■ A plurality of supply ports 1 are arranged on P from the internal hydraulic flow path at appropriate intervals, preferably at intervals that are multiples of β, and a circumference of radius C centered around each supply port 1 is provided. A jig clamp cylinder Hc is mounted on the pallet P while m tap holes 2 are provided at predetermined intervals on the top.
Around the bolt hole 3 cooperating with the tapped hole 2 on the side, n input ports 4, 4-- are provided at predetermined intervals on a circumference of a radius β centered on the bolt hole 3, and the bolt hole 3 is connected to the bolt hole 2. M
The hydraulic connection mechanism according to item 0, which enables Xn types of casting. (2) Four tap holes 2 (2) to (2) are provided at 90° intervals on the circumference of a circle having a radius β centered on the supply port 1; Four input ports 4■ to ■ are provided on a circumference of radius β centered on the bolt hole 3 at intervals of 90 degrees and 45 degrees apart from the tap holes 2■ to ■, and are spaced 22 points apart from the bolt hole 3. A cylinder chamber 5 having an operating piston 6 on an extension of the input port 4
2. The hydraulic coupling mechanism according to item 0, wherein the JTI 2 is selectively arranged around the supply port 1.