JPH02109668A - Tool guide for ultrasonic machining of small hole - Google Patents

Abstract

PURPOSE:To perform forming smoothly and quickly by providing a large sized abrasive liquid reservoir groove on the upper end opening circumference of a guide hole, providing a small sized abrasive liquid reservoir groove on the lower end opening circumference and communicating the upper and lower abrasive liquid reservoir grooves by an abrasive liquid passage. CONSTITUTION:A wax 8 is coated on a substrate 6 and placed at the specified position, an abrasive liquid 10 is filled up inside the abrasive liquid reservoir groove 11 of a tool guide 2' and filled up inside an abrasive liquid reservoir groove 12 as well through an abrasive liquid passage 13. Thus after completing a preparatory work a wire tool 1 is inserted into the guide hole 3 of the tool guide 2' in order to subject a small hole 7 to ultrasonic machining on the substrate 6 and when it is formed in the shape of the tool 5 by the dies part 4' of the opening upper edge of the guide hole 3, the forming is performed smoothly and quickly by a lot of abrasive liquid 10 of the abrasive liquid reservoir groove 11 inside of the upper end of the guide hole 3.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in a tool guide that also serves as a die for forming a wire tool into a tool shape for ultrasonic machining of minute holes.

(Prior Art) Recently, in order to perform ultrasonic machining of minute holes, as shown in FIG. There is a method in which the tool 5 is molded into the shape of the tool 5 using the die portion 4 of the workpiece 6, and then pressed straight along the guide hole 3 to ultrasonically process the microhole 7 in the workpiece 6. In the figure, 8 is wax placed between the workpiece 6 and the base 9 and between the workpiece 6 and the tool guide 2, and 10 is wax placed at the upper edge of the opening of the guide hole 3 of the tool guide 2. It is abrasive liquid.

(Problem to be Solved by the Invention) By the way, in the above-mentioned microhole ultrasonic machining method, in order to supply the abrasive liquid lO to the tip of the tool 5, as shown in the enlarged view of the main part of FIG. The gap between the guide hole 3 and the guide hole 3 was used. However, this gap is 0. Since the gap was extremely small, on the order of OLam, it was not possible to sufficiently supply the abrasive liquid 10 to the processing portion at the tip of the tool 5. Therefore, even if pressure was applied to the tool 5, it took a long time for ultrasonic machining of the microhole.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a tool guide for ultrasonic machining of micro holes, which can sufficiently supply abrasive liquid to the machining section at the tip of the tool.

(Means for Solving the Problems) Detailed explanation of the present invention for solving the above problems A tool guide for wave machining is a tool guide for micro-hole ultrasonic machining that also serves as a die and has a straight guide hole in the center. A large abrasive liquid groove is provided around the upper end opening of the guide hole, a small abrasive liquid groove is provided around the lower end opening, and these upper and lower abrasive liquid grooves are communicated by an abrasive liquid passage. This is a characteristic feature.

(Function) As described above, the tool guide for microhole ultrasonic machining of the present invention has abrasive liquid grooves provided at the upper and lower ends of the guide hole, and these upper and lower abrasive liquid grooves are communicated through an abrasive liquid passage. Therefore, when forming a wire tool into a tool shape using the die at the upper edge of the guide hole opening during ultrasonic machining of micro holes, the large amount of abrasive liquid in the large abrasive groove allows the forming process to be performed smoothly and quickly. be exposed. Since the abrasive liquid is smoothly and sufficiently supplied to the processing part at the tip of the molded tool from the small abrasive liquid groove at the lower end of the guide hole, the ultrasonic machining time for micro holes is shortened to about 173 times. High-speed processing becomes possible.

(Example) An example of the tool guide for micro hole ultrasonic machining of the present invention will be described with reference to FIG.
A guide hole 3 with an inner diameter of 0.1 mm is provided straight in the center of a rectangular micro-hole ultrasonic machining tool guide 2' made of carbide and 10 mm in width. 1mm square abrasive groove with 5 marks vertically and 5 marks horizontally
A rectangular abrasive groove 12 with a depth of 0.6 mm, a length of 3 mm, and a width of 3 mm is provided around the lower end opening of the guide hole 3, and the upper and lower abrasive grooves 11 and 12 have an inner diameter. 0.8mm
The abrasive liquid passages 13 communicate with each other. The abrasive liquid passages 13 have four equal squares, and are inclined downward toward the center.

Tool guide for micro hole ultrasonic machining 2 configured in this way
' is a workpiece 6 placed on a base 9 via wax 8 as shown in FIG. When ultrasonically machining the micro holes 7, wax 8 is applied onto the substrate 6 and placed in a predetermined position, and the tool guide 2
The abrasive liquid lO is filled in the abrasive liquid groove 11 of ', and the abrasive liquid 10 is also filled in the abrasive liquid groove 12 through the abrasive liquid passage 13. After completing the preparation work in this way, in order to ultrasonically process micro holes 7 in the substrate 6, the wire tool l is pushed into the guide hole 3 of the tool guide 2', and the die part 4 at the upper edge of the opening of the guide hole 3 is inserted.
' When molded into the shape of tool 5 with an outer diameter of 0.08 mm,
A large amount of abrasive liquid 10 in the abrasive liquid groove 11 at the upper end of the guide hole 3
This allows the molding process to be carried out smoothly and quickly. Since the abrasive liquid lO is smoothly and sufficiently supplied from the abrasive liquid groove 12 at the lower end of the guide hole 3 to the processed part at the tip of the molded tool 5, the ultrasonic machining time of the micro hole 7 is longer than the conventional one. Compared to the ultrasonic machining method for micro holes using the tool guide 2 shown in Fig. 3,
The time has been shortened to about 3, making high-speed processing possible.

(Effects of the Invention) As can be seen from the above description, according to the tool guide for ultrasonic machining of micro holes according to the present invention, during ultrasonic machining of micro holes, the wire tool is inserted into the die portion at the upper edge of the opening of the guide hole. When molded into a shape, since there is a large amount of abrasive liquid in the abrasive liquid groove at the upper end of the guide hole, the molding process is performed smoothly and quickly. Further, since the abrasive liquid is smoothly and sufficiently supplied to the processing portion at the tip of the molded tool from the abrasive liquid groove at the upper end of the guide hole, it is possible to speed up ultrasonic machining of minute holes.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view showing an embodiment of the tool guide for ultrasonic machining of micro holes according to the present invention, and FIG. Figure 3 is a vertical cross-sectional view showing a state in which a conventional tool guide is used to ultrasonically process micro-holes in a workpiece, and Figure 4 is an enlarged view of section A in Figure 3. FIG. Applicant: Tanaka Kikinzoku Kogyo Co., Ltd. Figure Figure ↓ ・・・Ma0a Sorei Figure Figure 4

Claims (1)

[Claims] 1. In a micro-hole ultrasonic machining tool guide that has a straight guide hole in the center and doubles as a die, a large abrasive liquid reservoir groove is provided around the upper end opening of the guide hole, and a small abrasive liquid reservoir is provided around the lower end opening. A tool guide for ultrasonic machining of micro holes, characterized in that a groove is provided and the upper and lower abrasive liquid reservoir grooves are communicated by an abrasive liquid passage.