DE8808893U1 - Holder for thread cutting dies - Google Patents

Description

· 1 ·

6.JWt 1988

Peter Väth

HanptstraOe 42

«771 Karbach

Honor

Holder for thread cutting dies 11)

The invention relates to a holder for dies for cutting external threads in narrow or hard-to-reach places.

Die holders of the conventional type (2) consist of only three individual parts, the actual holder and the two handles. Depending on the design, the handles are screwed into the holder or rigidly connected to the holder. The die is inserted into these holders and clamped in place with four screws.

Single-arm holders with a ratchet mechanism are only available in conjunction with special dies whose external shape is a hexagon.

The disadvantage of the previous two-arm holders is that you cannot cut an external thread in narrow and hard-to-reach places. Special dies are required for the single-arm holders with a ratchet mechanism, which means higher acquisition costs and more space requirements. Die with a hexagonal outline cannot be regrinded with all grinding devices.

The invention is based on the task of cutting or recutting external threads in particularly difficult to access and confined spaces. For cost and availability reasons, commercially available thread cutting dies are to be used.

This goal is achieved by having a square socket on one end of the holder that fits into a standard wrench from a socket set.

—2—

Peter Vmth

HMptetrae· 42 & JUN. 1968

8771 Karněch

-2-

The holder is hollow drilled so that the cut external thread can pass through.

he 6[·; ine are incorporated t.

the o^äne are four u;;: % ground offset drilled Ganlucher

In the drawing ^: the object is shown in a prototype in three views.

The holder (made of steel) consists of a retaining ring with a hollow drilled square neck. The square neck is designed for 1/2 inch, 3/4 inch ^or 1 inch bolts, depending on the size. The exit hole in the holder corresponds to the diameter of the threaded bolt so that the threaded bolt can pass through with the upper threads ^. Four exit holes are also machined in for the holes to exit.

The invention can be manufactured cost- ^effectively with relatively low production costs. This holder can be supplemented with extensions, extensions and universal joints to create an individual special holder as required. To cut the threaded bolt at an angle, place the holder with the square attachment over the heat, so that the holder is at an exact angle to the cutting die and precise cutting is guaranteed. Another advantage is the small space requirement and the high stability.

Claims (4)

1» Holder for thread cutting dies, characterized in that the holder (1) is designed at one end to accommodate a thread cutting die and has a hollow-bored square at the other end. The square pin is accommodated in a ratchet. 2. Holder for thread cutting dies according to claim 1, characterized in that the square pin is 0.5 inch, 0.75 inch or 1 inch thick depending on the size of the holder. 3. Holder for thread cutting dies according to claim 1 and claim 2, characterized in that the through hole in the holder corresponds to the nominal diameter of the threaded bolt (e.g. &phgr; 3nim for the thread M 3). 4. Holder for thread cutting dies according to claims 1 to 3, characterized in that many chip holes are machined into the holder, offset by 90 degrees.