Chuck mechanism, stair form member attached jaw and machine tool
AssigneeSynthe Tech Inc.
InventorYoshiaki ISHIKAWA
Life of this patent
Estimating the term…
Abstract
A stair form member attached jaw is installed with the stair form member provided at the bottom face of the soft jaw. The stair form member is held between a pair of grips in the jaw installing groove of the master jaw from both sides of the radial direction, thereby pulling the stair form member to the bottom direction of the jaw installing groove. The position of the radial direction of the soft jaw is determined by the engagement between the bottom face of the soft jaw and the upper serration faces of the master jaw; and the position of the soft jaw in the tangent line is determined by the close contact of the stair form member to the side face of the jaw installing groove.
Claims17
A chuck mechanism holding a workpiece, comprising;
- a chuck main body,
- plurality of master jaws provided to an end face of said chuck main body, and each of said plurality of master jaws comprising a jaw installing groove extending in a radial direction of the end face of said chuck main body,
- plurality of stair form member attached jaws provided to each of said master jaws, each of said stair form member attached jaws comprising a jaw for holding said workpiece and a stair form member inserted in said jaw installing groove of said master jaw,
- pairs of grips inserted to each of said jaw installing grooves of said master jaws, each of said pair of grips holding said stair form member of said stair form member attached jaw from an inner diameter side and an outer diameter side of said jaw installing groove, and
- positioning parts formed at upper parts of said master jaws and lower parts of said jaws to determine positions of said jaws at the end face of said chuck main body, wherein
- the inner diameter side end face and the outer diameter side end face of said stair form member are formed with engaging faces, each of said engaging faces comprising an inclined face to a direction of an upper opening direction of said jaw installing groove when said stair form member is inserted to said jaw installing groove of said master jaw,
- the end face of each of said pairs of grips opposing to said inner diameter side end face or said outer diameter side end face of said stair form member is formed with an opposing engaging part contacting with said engaging face of said stair form member to act a force on said engaging face towards a direction of a bottom of said jaw installing groove when said stair form member is held, and
- each of said pairs of grips comprises a locking part contacting with a predetermined locking part of said jaw installing groove of said master jaw to regulate a movement of said grip to an opposite direction of said direction of the bottom.
A stair form member attached jaw provided on a master jaw, comprising:
- a stair form member capable of being inserted in a jaw installing groove of said master jaw, said jaw installing groove extending in radial direction at an end face of a chuck main body,
- a jaw for holding a workpiece, and integrally formed with said stair form member, and
- a positioning part formed at a lower part of said jaw, said positioning part engaging with a positioning part formed at a upper part of said master jaw to determine a position of said jaw at the end face of said chuck main body, wherein
- said inner diameter side end face and said outer diameter side end face of said stair form member are respectively formed with one or plurality of engaging face which is an inclined face towards a upper part opening direction of said jaw installing groove when said stair form member is inserted in said jaw installing groove of said master jaw.
Dependencies are inferred from the claim text.