METHOD FOR MAKING AN INSPECTION FIXTURE, AND MOLD ASSEMBLY USED IN THE METHOD

Abstract

In a method for making an inspection fixture, a detachable mold assembly (20) and a hardenable fluid are firstly prepared. Secondly, the hardenable fluid is poured into the mold assembly, and a plurality of molding pins (23) are inserted into the mold assembly. Thirdly, a main body (21) with a plurality of positioning holes (2122) corresponding to the molding pins (i.e., the locations thereof) are formed in the mold after the hardenable fluid hardens. Fourthly, the mold assembly is detached, and the part is removed from the mold. Finally, a plurality of positioning pins is mounted into the positioning holes of the molded part, the positioning holes having remained upon removal of the molding pins.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the method for making an inspection fixture can be better understood with reference to the following drawing. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the method for making an inspection fixture. Moreover, in the drawings, like reference numerals designate corresponding parts throughout a plurality of views.

FIG. 1 is a schematic view of an inspection fixture, according to a preferred embodiment;

FIG. 2 is a flow chart of a method for making the inspection fixture, in accordance with the preferred embodiment;

FIG. 3 is a schematic view of a mold assembly used in the method of FIG. 2;

FIG. 4 is an exploded view of the mold assembly shown in FIG. 3.

Claims

1. A method for making an inspection fixture, comprising steps of: providing a detachable mold assembly and a fluid;pouring the fluid into the mold and inserting a plurality of molding pins into the mold assembly;solidifying the fluid in the mold assembly and forming a part with a plurality of positioning holes in the mold assembly, the molding pins establishing the respective locations of the positioning holes;detaching the mold assembly and removing the part from the mold assembly; andmounting a plurality of positioning pins in the positioning holes.

2. The method for making an inspection fixture as claimed in claim 1, wherein the fluid is a melted resin.

3. The method for making an inspection fixture as claimed in claim 2, wherein the melted resin has a total contraction in an approximate range from 0.1% to 0.4%.

4. The method for making an inspection fixture as claimed in claim 1, wherein the fluid is gypsum.

5. The method for making an inspection fixture as claimed in claim 1, wherein the mold assembly includes a male mold part, a female mold part, and a plurality of molding pins, the male mold part includes a mold plate and a mold core, the male mold part has a plurality of receiving holes extending through the mold plate and the mold core, the male mold part is engaged with the female mold part, and the molding pins are inserted into the receiving holes.

6. The method for making an inspection fixture as claimed in claim 5, wherein the female mold part includes a bottom plate, two opposite first side plates, and two opposite second side plates; and the two first side plates and two second side plates are detachably joined with the bottom plate and define a mold cavity corresponding to the mold core.

7. The method for making an inspection fixture as claimed in claim 6, wherein the two second side plates are lower than the first side plates.

8. The method for making an inspection fixture as claimed in claim 6, wherein two first threaded holes are defined in the male mold plate, the first threaded holes are positioned adjacent to two ends of the mold core, respectively, and each first side plate has a second threaded hole positioned corresponding to one of the first threaded holes.

9. The method for making an inspection fixture as claimed in claim 5, wherein the male mold part is made of aluminum.

10. The method for making an inspection fixture as claimed in claim 5, wherein the female mold part is made of steel.

11. The method for making an inspection fixture as claimed in claim 1, wherein the fluid is agitated in a vacuum to expel air contained in the fluid, before being poured in the mold.

12. The method for making an inspection fixture as claimed in claim 1, wherein the fluid is solidified at room temperature for about one hour.

13. A mold used in making an inspection fixture, comprising: a male mold part including a mold plate and a mold core, the male mold part having a plurality of receiving holes extending through the mold plate and the mold core;a female mold part engaging with the male mold part; anda plurality of molding pins;wherein the male mold part is engaged with the female mold part, and the molding pins are inserted into the receiving holes.

14. The mold assembly used in making an inspection fixture as claimed in claim 13, wherein the female mold part includes a bottom plate, two opposite first side plates, and two opposite second side plates; and the two first side plates and two second side plates are detachably joined with the bottom plate and define a mold cavity corresponding to the mold core.

15. The mold assembly used in making an inspection fixture as claimed in claim 14, wherein the two second side plates are lower than the first side plates.

16. The mold assembly used in making an inspection fixture as claimed in claim 14, wherein two first threaded holes are defined in the male mold plate, and the first threaded holes are adjacent to two ends of the mold core, respectively, each first side plate has a second threaded hole corresponding to one of the first threaded holes.

17. The mold assembly used in making an inspection fixture as claimed in claim 13, wherein male mold part is made of aluminum.

18. The mold assembly used in making an inspection fixture as claimed in claim 13, wherein the female mold part is made of steel.