Tool holder with spring operated nut

Claim 2

A tool holder assembly comprising: a. a hollow supporting member adapted to be secured to a machine tool spindle, having a recess for receiving a tool, and having a threaded end portion; b. a tool having a portion to be received in said recess; c. a threaded locking ring carried on said threaded end portion; d. means on said supporting member, on said tool and on said locking ring to lock said tool onto said supporting member for driven corotation, said locking ring being movable to a locked and an unlocked position; e. lock spring means acting between said supporting member and said locking ring and urging said locking ring to move to the locked position; f. a release pin directly slidably carried by said supporting member for movement along its length in a direction parallel to the rotational axis of the supporting member, and normally projecting from said supporting member into a portion of said recess to be engaged by the tool as the tool is received in said supporting member; g. a spring directly urging said release pin toward said tool; and h. a latch pin having a rigid connection with said release pin and projecting radially therefrom through an axially elongated radially open slot in said supporting member, said latch pin being movable in a direction perpendicular to its length into an axially opening notch in said locking ring.

Claim 3

A tool holder assembly according to claim 1 which includes means comovable with said locking ring defining a substantially enclosed groove encircling the rotational axis in which said lock spring means is disposed.

Claim 4

A tool holder assembly according to claim 2 in which said groove means comprises a radially outwardly as well as axially open groove in said locking ring, and an annular cover of L-shaped cross section telescopically received on said locking ring and substantially closing said groove.

Claim 5

A tool holder assembly according to claim 1 in which said lock spring means comprises two equal springs disposed in parAllel to each other.

Claim 6

A tool holder assembly according to claim 1 in which said locking ring has a set of radially outwardly opening axially elongated recesses, each of the recesses having the shape of a Woodruff key.

Claim 7

A tool holder assembly according to claim 1 including a radially projecting stop on said supporting member, and a movable pair of angularly spaced abutments on said locking ring, one of said abutments being engageable with one side of said stop at said unlocked position, and the other of said abutments being engageable with the other side of said stop to limit the rotation of said locking ring in absence of said tool.

Claim 8

A tool holder assembly according to claim 6 in which said locking ring has a cylindrically shaped flange with a cut-out portion defining said abutments.

Claim 9

A tool holder assembly according to claim 1 including a stop on said supporting member, and a pair of angularly spaced abutments on said locking ring engageable with said stop, one of said abutments providing a preload on said lock spring means.

Claim 10

A tool holder assembly comprising: a. a hollow supporting member adapted to be secured to a machine tool spindle, having a recess for receiving a tool, and having a threaded end portion; b. a tool having a portion to be received in said recess; c. a threaded locking ring carried on said threaded end portion; d. means on said supporting member, on said tool and on said locking ring to lock said tool onto said supporting member for driven corotation, said locking ring being movable to a tool-locked and an unlocked position; e. locking spring means acting between said supporting member and said locking ring and urging said locking ring to move to the locked position; f. means rigidly secured to and comovable with said locking ring defining a substantially enclosed groove encircling the rotational axis in which said lock spring means is disposed, said groove means comprising a radially outwardly as well as axially open groove in said locking ring, and an annular cover of L-shaped cross section telescopically rigidly corotatably received on said locking ring and substantially closing said groove; g. a latch pin movable in a direction parallel to the rotational axis of said locking ring into a position where it holds said locking ring in the unlocked position; h. a release pin having a rigid connection with said latch pin and projecting transversely therefrom such that it can be engaged by the tool as the tool is received by the tool holder; i. only one of said pins being directly slidably carried by said supporting member for movement along its length in a direction parallel to the rotational axis of the supporting member; and j. a spring urging said one pin toward said tool.

Claim 11

A tool holder assembly comprising: a. a hollow supporting member adapted to be secured to a machine tool spindle, having a recess for receiving a tool, and having a threaded end portion; b. a tool having a portion to be received in said recess; c. a threaded locking ring carried on said threaded end portion; d. means on said supporting member, on said tool and on said locking ring to lock said tool onto said supporting member for driven corotation, said locking ring being movable to a tool-locked and an unlocked position; e. locking spring means acting between said supporting member and said locking ring and urging said locking ring to move to the locked position; f. means rigidly secured to and comovable with said locking ring defining a substantially enclosed groove encircling the rotational axis in which said lock spring means is disposed, said groove means comprising a radially outwardly as well as axially open groove in said locking ring, and an annular cover of L-shaped cross section telescopically rigidly corotatably received on said locking ring and substantially closing said groove; g. a latch pin movable in a direction parallel to the rotational axis of said locking ring into a position where it holds said locking ring in the unlocked position; h. a release pin having a rigid connection with said latch pin and projecting transversely therefrom such that it can be engaged by the tool as the tool is received by the tool holder; i. only one of said pins being directly slidably carried by said supporting member for movement along its length in a direction parallel to the rotational axis of the supporting member; and j. a spring urging said one pin toward said tool.

Claim 12

A tool holder assembly according to claim 9 in which said lock spring means comprises two equal springs disposed in parallel to each other.

Claim 13

A tool holder assembly according to claim 9 including a single radially projecting stop on said supporting member, and a pair of angularly spaced abutments on said locking ring, one of said abutments being engageable with one side of said stop at said unlocked position, and the other of said abutments being engageable with the other side of said stop to limit the rotation of said locking ring in absence of said tool.

Claim 14

A tool holder assembly according to claim 11 in which said locking ring has a cylindrically shaped flange with a cut-out portion defining said abutments.

Claim 15

A tool holder assembly according to claim 9 including a single stop on said supporting member, and a pair of angularly spaced abutments on said locking ring engageable with said stop, one of said abutments providing a preload on said lock spring means.

Claim 16

A tool holder assembly comprising: a. a hollow supporting member adapted to be secured to a machine tool spindle, having a recess for receiving a tool, and having a threaded end portion; b. a tool havIng a portion to be received in said recess; c. a threaded locking ring carried on said threaded end portion; d. means on said supporting member, on said tool and on said locking ring to lock said tool onto said supporting member for driven corotation, said locking ring being movable to a tool locked and unlocked position; e. lock spring means acting between said supporting member and said locking ring and urging said locking ring to move to the locked position, said lock spring means comprising two equal helical coil springs disposed in parallel to each other; f. a block having two pilots projecting into the endmost coil of said springs and acting against said supporting member; g. a latch pin movable in a directional parallel to the rotational axis of said locking ring into a position where it holds said locking ring in the unlocked position; h. a release pin having a rigid connection with said latch pin and projecting transversely therefrom such that it can be engaged by the tool as the tool is received by the tool holder; i. only one of said pins being directly slidably carried by said supporting member for movement along its length in a direction parallel to the rotational axis of the supporting member; and j. a spring urging said one pin toward said tool.

Claim 17

A tool holder assembly comprising: a. a hollow supporting member adapted to be secured to a machine tool spindle, having a recess for receiving a tool, and having a threaded end portion; b. a tool havIng a portion to be received in said recess; c. a threaded locking ring carried on said threaded end portion; d. means on said supporting member, on said tool and on said locking ring to lock said tool onto said supporting member for driven corotation, said locking ring being movable to a tool locked and unlocked position; e. lock spring means acting between said supporting member and said locking ring and urging said locking ring to move to the locked position, said lock spring means comprising two equal helical coil springs disposed in parallel to each other; f. a block having two pilots projecting into the endmost coil of said springs and acting against said supporting member; g. a latch pin movable in a directional parallel to the rotational axis of said locking ring into a position where it holds said locking ring in the unlocked position; h. a release pin having a rigid connection with said latch pin and projecting transversely therefrom such that it can be engaged by the tool as the tool is received by the tool holder; i. only one of said pins being directly slidably carried by said supporting member for movement along its length in a direction parallel to the rotational axis of the supporting member; and j. a spring urging said one pin toward said tool.

Claim 18

A tool holder assembly according to claim 14 including a single radially projecting stop on said supporting member, and a pair of anguarly spaced abutments on said locking ring, one of said abutments being engageable with one side of said stop at said unlocked position, and the other of said abutments being engageable with the other side of said stop to limit the rotation of said locking ring in absence of said tool.

Claim 19

A tool holder assembly according to claim 15 in which said locking ring has a cylindrically shaped flange with a cut-out portion defining said abutments.

Claim 20

A tool holder assembly according to claim 14 including a single stop on said supporting member, and a pair of angularly spaced abutments on said locking ring engageable with said stop, one of said abutments providing a preload on said lock spring means.

Claim 21

A tool holder assembly according to claim 14 in which said equal springs are helical coil springs, and a block having two pilots projecting into the endmost coils of said springs and acting against said stop.

Claim 22

A tool holder assembly comprising: a. a hollow supporting member adapted to be secured to a machine tool spindle, having a recess for receiving a tool, having a threaded end portion, and having a single radially projecting stop secured thereto; b. a tool having a portion to be received in said recess; c. a threaded locking ring carried on said threaded end portion, said locking ring being movable to a tool-locked and an unlocked position, said locking ring having a cylindrically shaped flange with a cut-out portion defining a movable pair of angularly spaced abutments fixed thereon for respectively engaging oppositely directed surfaces on said stop at said locked position and to limit rotation of said locking ring in absence of said tool; d. means on said supporting member, on said tool and on said locking ring to lock said tool onto said supporting member for driven corotation; e. lock spring means acting between said supporting member on said locking ring and urging said locking ring to move to the locked position; f. a latch pin movable in a direction parallel to the rotational axis of said locking ring into a position where it holds said locking ring in the unlocked position; g. a release pin having a rigid connection with said latch pin and projecting transversely therefrom such that it can be engaged by the tool as the tool is received by the tool holder; h. only one of said pins being directly slidably carried by said supporting member for movement along its length in a direction parallel to the rotational axis of the supporting member; and i. a spring urging said one pin toward saiD tool.

Claim 23

A tool holder assembly comprising: a. a hollow supporting member adapted to be secured to a machine tool spindle, having a recess for receiving a tool, having a threaded end portion, and having a single radially projecting stop secured thereto; b. a tool having a portion to be received in said recess; c. a threaded locking ring carried on said threaded end portion, said locking ring being movable to a tool-locked and an unlocked position, said locking ring having a cylindrically shaped flange with a cut-out portion defining a movable pair of angularly spaced abutments fixed thereon for respectively engaging oppositely directed surfaces on said stop at said locked position and to limit rotation of said locking ring in absence of said tool; d. means on said supporting member, on said tool and on said locking ring to lock said tool onto said supporting member for driven corotation; e. lock spring means acting between said supporting member on said locking ring and urging said locking ring to move to the locked position; f. a latch pin movable in a direction parallel to the rotational axis of said locking ring into a position where it holds said locking ring in the unlocked position; g. a release pin having a rigid connection with said latch pin and projecting transversely therefrom such that it can be engaged by the tool as the tool is received by the tool holder; h. only one of said pins being directly slidably carried by said supporting member for movement along its length in a direction parallel to the rotational axis of the supporting member; and i. a spring urging said one pin toward saiD tool.