JPS626938B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a resin mold jig.

Conventionally, the usual jigs for highly rigid parts consist of a machining reference member and a main clamp device, but jigs for thin parts and other non-rigid parts are equipped with an anti-rattle device, in order to support the rigidity of the workpiece. An auxiliary clamping device is required, and this is particularly important in heavy cutting such as milling. However,
The anti-rattle device and the auxiliary clamp device must not distort the workpiece by themselves and must be able to withstand cutting force, so they are complicated devices. In addition, in the process of manufacturing the jig, it is necessary to repeatedly perform trial cutting to determine the necessary force and optimal mounting position for these auxiliary devices.

Therefore, there are problems such as high jig costs and a long manufacturing period, and the disadvantage is that it is a complicated device, which is very disadvantageous in terms of maintainability.

SUMMARY OF THE INVENTION An object of the present invention has been made in view of the above-mentioned drawbacks, and is to provide a method for manufacturing a resin mold jig that reduces costs, facilitates manufacturing, and shortens manufacturing period.

In order to achieve such an objective, the method of the present invention involves placing a metal member as a processing reference in a space surrounded by a core metal on a table and a clay plate, and then placing a workpiece on this metal member. Then, resin was poured into the space surrounded by the metal core and clay plate.

The method of the present invention will be explained below using examples shown in the figures.

FIG. 1 is a plan view showing an embodiment of a resin mold jig device for milling, and FIG. 2 is a cross-sectional view of FIG. 1 taken along the - line. The jig of this embodiment is a jig for milling the upper surface of the workpiece 1 in FIG. 2 using a milling cutter 16, and FIGS. 1 and 2 show the workpiece 1 in a clamped state. Now, to explain the names of each part, code 1 is a thin and non-rigid workpiece, 2 is a clamper,
3 is a clamp fulcrum pin, 4 is a cylinder, 5 is an auxiliary reference metal made of resin, and 6 to 10 are jig holders made of resin. Further, 11 is a metal core, 12 is a metal processing reference member, 13 and 14 are clamp butts, and 1
5 is a mandrel, 16 is a milling cutter, and the work 1 is attached to holders 6 to 10 of a jig in which a resin mold is previously made using the receiving surface of the work 1 as a matrix. And after this, clamper 2
By using the clamp fulcrum pin 3 as a fulcrum, the workpiece 1 is moved to the clamp supports 6 to 10 of the jig by the movement of the cylinder 4, so that it fits without being distorted.
It is now being held down by the The jig also includes machining reference members 12 at three locations, a jig support 6 provided for the purpose of reinforcing the area around the machining reference members 12 because the work 1 is thin and has no rigidity, and
8 and 10. Further, the processing reference member 12 and the jig holders 6, 8, 10
If this is done alone, the workpiece 1 is not sufficiently reinforced and chatter occurs, so jig supports 7 and 9 are provided to support and reinforce the workpiece 1. The holders 6 to 10 of these jigs are made of resin, and are made of resin with low hardness. In addition to the machining reference members 12 at the three locations and the jig supports 6 to 10, the jig has a boss 1a at the center of the workpiece due to the shape of the workpiece 1. Since milling is carried out at a position isolated from the supports 6 to 10 of the workpiece, an auxiliary reference metal 5 is also provided under the boss 1a at the center of the workpiece, and serves to support the workpiece as an auxiliary to the machining reference member 12. There is. The auxiliary reference metal 5 is made of a resin having a higher hardness than the resin of the holders 6 to 10 of other jigs.

Next, a method for manufacturing the jig holder 8 will be explained using FIGS. 3a, b to 5 a, b. First, the workpiece 1 is attached to the machining reference member 12 as shown in FIGS. 3a and 3b. At this time, the workpiece 1 must be in close contact with the processing reference member 12 without any gaps, and in order to prevent the workpiece 1 from lifting up when pouring the resin, an appropriate weight 18 is placed on the top surface of the workpiece 1, and then After that, a necessary area is determined as the support 8 of the jig, and a mold is made using a clay plate 17 into which the resin will be poured. After this formwork is completed,
As shown in FIGS. 4a and 4b, resin is injected into the mold. Note that the hardness of the resin required here can be obtained by selecting the required resin. Next, after the resin injected into the formwork is completely cured,
As shown, the weight 18 and the workpiece 1 are taken out, and then the clay plate 17 of the formwork is removed to complete the jig holder 8. In addition, in the case of this example,
The time required for curing was approximately 24 hours.

As explained above, according to the resin mold jig manufactured by the method of the present invention, when the hardness of the resin is adjusted and the hardness of the resin is increased, it can be used as an auxiliary reference metal, and it can also be used as an auxiliary reference metal. When used with low hardness, the vibration-absorbing effect increases, so it can be used to prevent chatter, and the range of applications of the resin is extremely wide. In either case, since the actual workpiece is used as the master mold, the receiving surface conforms to the workpiece, so that the occurrence of distortion when the workpiece is clamped is extremely small. Furthermore, since the formwork can be made of clay, it is easy to manufacture and can be applied to any part of the workpiece. In addition, by using this jig, the rigidity when the workpiece is attached is relatively increased, so cutting speed can be improved, and distortion when clamped can be minimized. , it is possible to obtain the effect that processing accuracy can also be improved.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an example of a resin mold jig for milling, Fig. 2 is a cross-sectional view when Fig. 1 is cut along the - line, Figs. 3 a, b to 5 a, 3b is a process diagram showing a method of manufacturing a jig holder, and FIGS. 3a to 5a are views taken along arrow A in FIGS. 3b to 5b. 1...Work, 5...Subsidy standard fee, 6-10...
...Receiver of jig, 11... Core metal, 15... Processing standard member, 15... Core metal, 17... Clay plate.

Claims (1)

[Claims] 1. After placing a metal member that will serve as a processing standard in the space surrounded by the core metal and clay plate on the table, place the workpiece on this metal member, and place the resin in the space surrounded by the core metal and clay plate. A method for manufacturing a resin mold jig, characterized in that the resin mold jig is poured.