JPS6236597Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is suitable for polishing a workpiece having at least two holes in the same direction, 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
If the workpiece has a hole as shown in FIGS. 3 to 3, 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 washing metal fitting. In the figure, 1 is a jig body, which is fixed to the spindle of a polishing machine. Two protrusions 2 and 3 are protruded from the jig body 1 and spaced apart from each other by a predetermined distance. A ring-shaped locking portion 4 is protruded from the other projection 3, and a nut 5 is movable in the length direction of the projection 3 between the locking portion 4 and the jig main body 1. is inserted into. here,
One protrusion 2 acts as a rotation stopper for the workpiece.

In addition, in the figure, 6 is an adjustment hole for tilting the workpiece, and 7 is a bolt insertion hole for fixing the workpiece to the spindle of the polishing machine.
As shown in the figure, the jig is fixed to the spindle of the polishing machine by inserting bolts 8 and 9.

When attaching the workpiece (washing fixture) 10 to the polishing jig shown in FIG. 1, insert both protrusions 2 and 3 into the two holes 11 and 12 of the workpiece 10, respectively, as shown in FIG. The workpiece 10 is fixed to the polishing jig by inserting the workpiece 10 and screwing the nut 5 into the male threaded portion 13 of the workpiece 10.

Furthermore, in the jig shown in FIG. 3, one of the projections 2 is formed into a cylindrical shape, and a female threaded portion 13 is formed on the inner circumferential surface of the jig, and after the workpiece 10 is inserted, the outside of one of the holes 11 of the workpiece 10 is formed. A bolt 14 is inserted from the end side, and the bolt 14 is screwed into the female threaded portion 13 to fix the workpiece 10.

However, as mentioned above, this method of fixing the workpiece requires that the nut be firmly tightened to the workpiece using a monkey wrench, spanner, etc. to prevent the workpiece from falling off during polishing. When fluidly rotating the media in forward and reverse directions, the bolts and nuts 5 are likely to loosen due to the strong resistance of forward or reverse rotation of the media (cone).
This makes it easy for the workpiece to fall off, so careful attention must be paid to prevent the bolts and nuts from loosening, and the bolts and nuts must be tightened with considerable force, making the workpiece installation process extremely difficult. It was a hassle. In addition, since the workpiece is firmly fixed by bolts and nuts in this way, it is necessary to loosen the bolt or workpiece with more force when removing the workpiece, which makes removing the workpiece very time-consuming. Usually 10 to 30 polishing steps per polishing operation.
Considering that several bolts and nuts are used, polishing productivity is extremely inefficient in terms of time and effort.

Furthermore, the workpiece mounting method shown in FIGS. 1 to 3 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 is difficult to fix the workpiece during polishing. 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 the same direction, 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, which has two holes oriented in the same direction, at least one of which is formed as a linear through hole. In this method, two protrusions that can be inserted into the two holes are provided in the jig main body, and at least one of the protrusions is formed so that the tip of the protrusion penetrates through the through hole. A locking body is provided on the proximal end of one of the projections, with which one side of the object to be treated comes into contact, and a washer that contacts the other side of the object on the tip side of the projection can be attached to and detached from one of the projections. The washer is provided with a fixing mechanism for fixing the washer at a position where it comes into contact with the object to be treated.

Below, Figures 4 to 6 are shown for one embodiment of the present invention.
This will be explained with reference to the figures. In addition, in FIGS. 4-6, the same reference numerals are attached|subjected about the same component as FIGS. 1-3, and the description is abbreviate|omitted.

In the embodiment shown in FIG. 4, a ring-shaped locking body 15 is inserted into one of the protrusions 2 so that the one protrusion 2 can be moved. A spring body 16 is interposed between the ring-shaped locking body 15 and the jig main body 1, one end of this spring body 16 is fixed to the ring-shaped locking body 15, and the spring body 16
The other end is fixed to the jig main body 1. Further, a large-diameter cylindrical stopper body 17 is protruded from the tip of the one protrusion 2, and a notch 18 that engages with the one protrusion 2 as shown in FIG. and one hole 1 of the workpiece 10 on one side.
A fixing washer 19 having a small-diameter crescent-shaped stepped portion 19a projecting thereon that can be engaged with one of the protrusions 2 is removably installed on one of the protrusions 2.

When attaching the work 10 to the jig according to this embodiment, the washer 19 is removed from one of the protrusions 2, and then the two required holes 1 of the work 10 are inserted into the holes 1.
The projections 2, 3 of the jig are inserted into the holes 1, 12, and the workpiece 10 is pushed in against the biasing force of the spring body 16, so that the tip of one projection 2 penetrates one of the holes 11 of the workpiece 10 and protrudes outward. Next, in this state, the notch 18 of the washer 19 is engaged with one of the projections 2 in a state of abutment against the stopper body 17, and the washer 19 is attached to one of the projections 2. As a result, the locking body 15 is stopped by the pressing force of the spring body 16 as shown in FIG.
presses the work 10, and the work 10 is firmly fixed between the locking body 15 and the washer 19. In this case, the step 19a is inserted into one of the holes 11, so that even if the opening of the notch 18 of the washer 19 is downward or the pressing force of the spring body 16 weakens, the washer 19 will not fall off one of the protrusions.

When the workpiece 10 is removed from the jig in this manner, the workpiece 10 is pressed against the jig main body 1 side against the biasing force of the spring body 16, and the step portion 19a of the washer 19 is removed. After letting the washer 19 out of the hole 11, insert the washer 19 into one of the projections 2.
Then, the workpiece 10 is removed from both protrusions 2,
This is derived from 3.

Therefore, the workpiece 10 can be easily attached to the jig and removed from the jig with a single touch, and the workpiece 10 can be firmly fixed to the jig and always be securely attached to the jig. It can be subjected to polishing and other treatments in its current state. In this case, since the method of fixing the workpiece 10 does not use bolts or nuts, the workpiece 10
When performing flow polishing on the workpiece 10, there is no inconvenience that the fixed state of the workpiece 10 loosens even when the workpiece 10 is rotated in the forward or reverse direction, and as described above, an accident such as the workpiece 10 falling off midway does not occur. Further, since the other protrusion 3 for preventing rotation is inserted into the other hole 12 of the work 10, the work 10 will not rotate.

To further explain this point, the workpiece in a dry fluidized 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 16 is not particularly limited, but for example, low-stress spring hard steel wire (JISG3521), corrosion-resistant stainless steel wire (JISG4309), etc. are preferably 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, the results will be shown when comparing the time it takes to actually attach and detach a workpiece using the jig shown in FIG. 4 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 three spindles in total), and the dry-type high-speed fluidized sander is rotated at a rotation rate of 200 r.Pm. 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. 4. 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. 4 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, when comparing 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 4. Ta.

In addition, in the embodiment described above, when one protrusion 2 is inserted into the hole 11 of the work 10, the work 10
A ring-shaped locking body 15 serves as a locking mechanism for locking the
A spring body 16, a stopper body 17, and a fixing washer 19 are provided. in this case,
In the embodiment shown in FIG. 4, the ring-shaped locking body 15 is brought into contact with the workpiece 10 within the workpiece 10, but the locking body 15 is formed to have a larger diameter so that the hole 11 of the workpiece 10 The locking body 15 may be brought into contact with the workpiece at the inner end surface of the forming location. Furthermore, the locking mechanism is not limited to these, for example, the seventh
As shown in the figure, ring-shaped locking bodies 15 are provided protrudingly at predetermined locations on one protrusion 2, and washer engagement grooves 2 are provided at predetermined intervals on the tip side of one protrusion 2.
0 and inserting the workpiece 10 into one of the projections 2, the washer 1 is inserted into the required position of these grooves 20.
9 may be engaged and locked.

Further, in the present invention, the other protrusion 3 can also have the same configuration as the one protrusion 2.

Furthermore, the shape of the jig main body 1 is not limited to the above-mentioned embodiment, but can be formed into any suitable shape, and other configurations may be variously changed 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, the jig has two holes, at least one of which is formed as a linear through hole, and the jig has two holes that can be inserted into the two holes in the jig body. protrusions, at least one of which is formed so that the tip of the protrusion penetrates the through hole and projects, and one of the objects to be treated is provided on the proximal end side of one of the protrusions. A locking body is provided on which the two sides abut, and a washer that contacts the other side of the object to be processed is provided on the protruding tip side so that it can be attached to and detached from one of the protrusions, and this washer is fixed at a position where it abuts the object to be processed. By incorporating a fixing mechanism, workpieces can be mounted and removed quickly, easily and reliably by hand without the use of special tools, reducing labor and improving production capacity. Not only can the workpiece be clearly measured, but also the workpiece can be firmly attached to the jig. Therefore, the jig of this invention can be used in various types of polishing machines such as dry high-speed flow polishing machines, vibrating barrels, rotating barrels, and planetary rotating barrels. It is very suitable for use as a jig for fixing workpieces (objects to be processed) to be polished, especially water-washing fittings, gas stoves, etc.

[Brief explanation of the drawing]

Fig. 1 shows an example of a conventional jig, A is a side view, B is a front view, Fig. 2 is a side view showing the same example in use, and Fig. 3 is another example of the conventional jig. A side view showing an example, FIG. 4 shows an embodiment of the present invention, A is a side view, B is a front view, FIG. 5 is an example of a fixing washer, A is a front view, B is a side view, FIG. 6 is a side view showing the same example in use,
FIG. 7 is a side view showing another embodiment of the present invention. 1... Jig main body, 2... One protrusion, 3...
The other protrusion, 10... Workpiece, 11, 12...
hole, 15... ring-shaped locking body, 16... spring body, 17... stopper body, 19... fixing washer, 20... washer engagement groove.

Claims (1)

[Scope of utility model registration request] In a jig for fixing a workpiece, the jig has two holes in the same direction, at least one of which is formed as a linear through hole, and the two holes are arranged in the jig main body. two protrusions that can be inserted into the through hole, at least one of the protrusions is formed so that the tip of the protrusion protrudes through the through hole, and a proximal end of the one protrusion is provided. A locking body is provided with which one side of the object to be treated comes into contact, and a washer that comes into contact with the other side of the object to be treated is provided on the protruding tip side so as to be detachable from one of the protrusions, and this washer is connected to the object to be treated. A jig for polishing, etc., characterized by being provided with a fixing mechanism that fixes it in the abutting position.