JPS6236598Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is suitable for polishing a workpiece having at least two holes in different directions, such as a flush fitting, such as a faucet, a mixed flush fitting, or a valve. The present invention relates to a jig to be used, and particularly to a jig suitable for firmly holding the workpiece when dry high-speed fluid polishing is performed on the workpiece.

Conventionally, in the fluid polishing method using a dry high-speed fluid sander, the workpiece to be polished is fixed to the workpiece mounting shaft of the polisher. ), the workpiece will fall off if it is not firmly fixed to the workpiece mounting shaft, resulting in defects such as damage to all workpieces and the polishing machine etc. due to the workpiece falling off. .

Therefore, when fixing the work, for example, the first
As shown in the drawings and FIG. 2, if the workpiece has a hole, it is necessary to firmly tighten and fix the workpiece using bolts, nuts, monkey bars, spanners, etc. That is, Fig. 1 shows a conventional polishing jig for attaching a water-washing fitting. In the figure, 1 is a jig main body with a support column 2 protruding from one end in the length direction. fixed to the spindle. A workpiece insertion rod 3 is protruded from the tip of the support column 2, and a ring-shaped locking portion 4 is protruded from a predetermined location of the insertion rod 3. A nut 5 is inserted between the insertion rod 3 and the proximal end thereof so as to be movable in the length direction of the insertion rod 3.
Further, a workpiece detent bar 6 is provided protruding from the other end in the length direction of the jig main body 1 . In the figure, 7 is an adjustment hole for tilting the workpiece, and 8 is a bolt insertion hole for fixing the workpiece to the spindle of the polishing machine. 10, respectively, to fix the jig to the spindle of the polishing machine.

When attaching the workpiece (washing fixture) 11 to the polishing jig shown in FIG. 1, as shown in FIG. Insert the bar 6 and tighten the nut 5 to the male threaded part 1 of the workpiece 11.
4 to fix the workpiece 11 to the polishing jig.

However, as mentioned above, in this method of fixing the workpiece, it is necessary to firmly tighten and fix the nut to the workpiece using a monkey wrench, spanner, etc. to prevent the workpiece from falling off during polishing. When fluidly rotating the media in the forward and reverse directions, the bolts and nuts are likely to come loose due to the strong resistance of the forward or reverse rotation of the media (cone), making it easy for the workpiece to fall off. Great care must be taken to prevent loosening, and the bolts and nuts must be tightened with considerable force, making work to attach the workpiece extremely troublesome. In addition, since the workpiece is firmly fixed with bolts and nuts in this way, it is necessary to loosen the bolt or nut with more force when removing the workpiece, which makes removing the workpiece very time-consuming. However, considering that 10 to 30 bolts and nuts are usually used in one polishing operation, the polishing productivity was extremely inefficient in terms of time and effort.

Furthermore, the workpiece mounting method shown in FIGS. 1 and 2 described above uses a nut to fix the workpiece, but the fixing method in which such a nut is screwed onto the threaded part of the workpiece does not allow the media ( Since the abrasive scum from the cone gets into the nut and the threads of the threaded portion of the workpiece, a considerable amount of force is required to loosen the nut, and in this respect, it also takes time and effort to remove the workpiece.

Therefore, a sanding machine such as a dry high-speed flow sander is normally operated 50 to 200 times a day, and each time it is operated, 10 to 30 bolts and nuts are attached and removed as described above. Therefore, it is desired to improve the efficiency of the conventional polishing operation, which requires considerable effort and effort to attach and detach the workpiece.

The present invention was developed in view of the above circumstances, and allows workpieces to be easily attached and detached with one touch, without using bolts or nuts, and without using tightening tools such as monkey bars or spanners to tighten them.
It is an object of the present invention to provide a jig for fixing a workpiece (workpiece) having two holes in mutually opposite directions, such as a water-washing fitting or a gas tank.

That is, in order to achieve the above object, the present invention provides a jig for fixing a workpiece that has two holes in mutually opposite directions, and includes two holes that can be inserted into the two holes in the jig main body. protrusions, at least one of which is disposed movably along its length, and a ring-shaped engagement that abuts the object to be processed on one or the other of the protrusions. A stopper is provided, and a fixing mechanism is provided for fixing the ring-shaped stopper at a position where it contacts the object to be processed.

3 and 4 for one embodiment of the present invention.
This will be explained with reference to the figures. In FIGS. 3 and 4, the same components as those in FIGS. 1 and 2 are denoted by the same reference numerals, and the explanation thereof will be omitted.

In the embodiment shown in FIG. 3, a through hole 15 is bored at the tip of the support column 2, and a workpiece insertion rod (one protrusion) 3 is moved into this through hole 15 in its length direction. Possibly inserted. and,
A stopper body 1 is attached to the base end of the workpiece insertion rod 3.
6 is provided in a protruding manner, a ring-shaped locking portion 4 is provided in a protruding manner on the distal end side, and a spring body 17 is interposed between the ring-shaped locking portion 4 and the support column portion 2 . This spring body 17 is biased so as to press the ring-shaped locking portion 4 downward in FIG.
The stopper body 16 is normally in contact with the support column 2.

When attaching the workpiece 11 to the jig according to this embodiment, hold the workpiece insertion rod 3 with your hands, move it upward in FIG. 3 against the urging force of the spring body 17, and pull it up. A workpiece rotation prevention bar (other protrusion) 6 is inserted into the other hole 13 of 11.
Then, the workpiece insertion rod 3 is inserted into one of the holes 12 of the workpiece 11, and the hand or the like is released. As a result, as shown in FIG. 4, the locking portion 4 of the workpiece insertion rod 3 is
presses the workpiece 11, and the workpiece 11 is firmly fixed between the locking portion 4 and the workpiece rotation prevention bar 6.

In addition, when removing the workpiece 11 from the state fixed to the jig in this way, the stopper body 16 is pulled up against the biasing force of the spring body 17, and the workpiece insertion rod 3 is inserted into one hole of the workpiece 11. At the same time, the workpiece 11 is pulled out from the jig body 1 away from the workpiece rotation prevention bar 6.

Therefore, the workpiece 11 can be easily attached to and removed from the jig with a single touch, so to speak, and the workpiece 11 can be firmly fixed to the jig so that it is always securely attached to the jig. It can be subjected to polishing and other treatments in its current state. In this case, the work 11 is fixed because bolts and nuts are not used to fix the work 11.
When performing flow polishing on workpiece 11, there is no inconvenience that the fixed state will loosen even if the workpiece is rotated in the forward or reverse direction.
Accidents such as falling off midway do not occur. Also,
Since the workpiece 11 has the anti-rotation bar 6 inserted into the other hole 13, the workpiece 11 will not rotate.

To further explain this point, the workpiece in a dry flow sander is subjected to a force that shakes the workpiece off due to centrifugal force due to rotation and revolution, and a force that changes the mounting position of the workpiece due to polishing resistance due to forward and reverse rotation. There are three external resistances: vibration of the workpiece caused by the tank being lowered at the start and end of operation, but the above jig can reliably hold the workpiece against these external forces. .

Here, the material of the spring body 17 is not particularly limited, but for example, low-stress spring hard steel wire (JISG3521), corrosion-resistant stainless steel wire (JISG4309), etc. are suitably used as a cold-formed coil spring. As hot-formed coil springs, mainly JIS standards
G4801 spring steel or the like is preferably used. In addition, the wire diameter of the spring body is not particularly limited, but is 1 to 2 m/m.
φ, and the number of effective turns is also not limited, but 6 to 15/50
mm, particularly 9 to 13/50 mm, is preferably used. In this case, if the effective number of turns is too large, the line spacing becomes small and the media (cones) get stuck between the lines, causing the spring to lose its effectiveness and making it difficult to remove the spring.

Next, we will show the results of comparing the time it takes to actually attach and detach a workpiece using the jig shown in FIG. 3 and the jig shown in FIG. 1.

[Experiment example]

Six jigs are attached to each spindle of a dry-type high-speed fluidized sander that has three spindles (18 jigs are attached to the three spindles in total), and the dry-type high-speed fluidized sander is rotated at a rotation speed of 200 rpm. As a result of polishing by rotating for a total of 6 minutes (3 minutes of rotation and 3 minutes of reverse rotation), the workpiece remained firmly and stably fixed to the jig as shown in FIG. In addition, as a result of measuring the time required to attach and detach the workpiece to and from the jig, it took approximately 56 seconds at the 18 locations mentioned above.

On the other hand, when a similar experiment was conducted using a jig using the nut tightening method shown in Figure 1, the time required to attach and remove the workpiece to and from the jig was approximately 7 minutes ( 420 seconds).

Therefore, the time reduction by using the jig shown in FIG. 3 was approximately 1/7, which was a very large reduction in the time required for attachment and detachment, and the labor was also significantly reduced. Furthermore, compared to the production efficiency of polishing by attaching and removing workpieces using the jig shown in Figure 1, the productivity is equivalent to twice that of the conventional method when using the jig shown in Figure 3. Ta.

In addition, in the embodiment described above, when the workpiece insertion rod 3 is inserted into one hole 12 of the workpiece 11, the stopper body 16 is used as a locking mechanism for locking the workpiece insertion rod 3 (one protrusion). , the locking part 4 and the spring body 17 are provided, but in this case, the ring-shaped locking part 4 is provided movably with respect to the workpiece insertion rod 3, and one end of the spring body 17 is fixed to the locking part 4. However, the other end of the spring body 17 may be fixed to the support column 2. Furthermore, the locking mechanism is not limited to these; for example, as shown in FIG. 19 may be engaged to lock the workpiece insertion rod 3 (one protrusion).

In addition, in the above embodiment, the workpiece rotation prevention bar 6
(the other protrusion) is provided to protrude from the jig main body 1, but the workpiece rotation prevention bar 6 can also be attached to the jig main body 1 with the same structure as the workpiece insertion rod 3.

Furthermore, in the above-described embodiment, the shape of the jig main body 1 was formed into an octagonal elongated plate shape, but the shape of the jig main body 1 is not limited to this, and can be formed into an appropriate shape. Other configurations may also be modified in various ways within the scope of the gist of the present invention.

As explained above, the present invention provides two
In a jig for fixing a workpiece having two holes, there are two holes that can be inserted into the two holes in the jig main body.
At least one of the projections is provided so as to be movable along the length thereof, and a ring-shaped projection that comes into contact with the object to be treated is provided on one of the projections or the other projection. By providing a locking portion and a fixing mechanism for fixing this ring-shaped locking portion to a position where it contacts the workpiece, it is possible to attach and remove the workpiece with a single touch, without using a special tool. It can be done quickly, easily and reliably by hand without having to do it, which can significantly reduce labor and improve production capacity, and also allows the workpiece to be securely attached to the jig. The devised jig is extremely useful as a jig for fixing workpieces to be polished (workpieces), especially water-washing fittings and gas containers, to various types of polishing machines such as dry high-speed flow polishing machines, vibrating barrels, rotating barrels, and planetary rotating barrels. It is suitable for use in

[Brief explanation of the drawing]

Fig. 1 shows a conventional jig, A is a side view, B is a front view, Fig. 2 shows the same example in use, A is a side view, B is a front view, and Fig. 3 is a side view. Figure 4 shows an embodiment of the present invention, A is a side view, B is a front view, and Figure 4 shows the same example in use.
5 is a side view, B is a front view, and FIG. 5 is a side view showing another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Jig main body, 2... Support column part, 3... Work insertion rod, 4... Ring-shaped locking part, 6... Work rotation stopper bar, 11... Work, 12, 13...
Hole portion, 15...through hole, 16...stopper body,
17... Spring body, 18... Washer engagement groove, 1
9...Watsiyah.

Claims (1)

[Scope of utility model registration request] In a jig for fixing a workpiece having two holes in mutually different directions, the jig body is provided with two protrusions that can be inserted into the two holes, and at least one of the protrusions is The body is disposed so as to be movable along its length, and one of the protrusions or the other protrusion is provided with a ring-shaped locking portion that comes into contact with the object to be processed, and the ring-shaped locking portion A jig for polishing, etc., characterized in that it is provided with a fixing mechanism for fixing the jig in a position where it comes into contact with the object to be processed.