Means for mutually parallel displacement of tool holders

Details Means for mutually parallel displacement of tool holders Means for mutually parallel displacement of tool holders

1999-10-29

2001-05-08

Tsai, Henry (Department: 3722)

Cutters, for shaping

Including holder having seat for inserted tool

Plural simultaneously usable separable tools in common seat...

C407S076000, C407S087000, C407S092000

Reexamination Certificate

active

06227771

ABSTRACT:

TECHNICAL FIELD OF THE INVENTION
The present invention relates to a device for parallel displacement of insert holders included in a set of insert holders for metal cutting, especially parting or grooving.
PRIOR ART
In connection with insert holders adapted for inserts that perform parting or grooving it is common that a set of insert holders are arranged side by side, adjacent inserts being clamped in said respective holders and having equidistant relationship relative to each other. Spacers are used to achieve said equidistant relationship, said spacers being applied between the insert holders. This technique will be described more in detail with reference to FIG.
1
. Since this handling of spacers is performed manually it is at once realized that such arrangement is time consuming when the distance between adjacent inserts is to be changed, said equidistant relationship however being maintained. This happens quite frequently, e.g. when manufacturing parts for ball bearings. It is also difficult to manage to get said distances exactly the same since the thickness of the spacers may vary. Normally the rearrangement of the spacers is carried out by trial and error until the equidistant relationship, of required tolerance, between adjacent spacers is achieved.
OBJECTS AND FEATURES OF THE INVENTION
An object of the present invention is to present a device of the type defined above where the distance between adjacent inserts is equally large and at a high tolerance level. When the distance between adjacent inserts is to be changed only an extremely simple adjustment is required since the distance between adjacent inserts permanently is maintained the same. The object of the present invention is realized by mounting holders on a screw device such that when the screw is rotated, the holders are displaced axially in such manner that the distance between holders changes equally.


REFERENCES:
patent: 2363160 (1944-11-01), Sundstrom
patent: 2669149 (1954-02-01), Watson et al.
patent: 2861322 (1958-11-01), Benes et al.
patent: 2877536 (1959-03-01), Monosmith
patent: 3602445 (1971-08-01), Nagao et al.
patent: 3662445 (1972-05-01), Whitaker
patent: 3724965 (1973-04-01), Green
patent: 4063841 (1977-12-01), Niman, Jr.

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