JPH0375916U

JPH0375916U -

Info

Publication number: JPH0375916U
Application number: JP13497689U
Authority: JP
Priority date: 1989-11-20
Filing date: 1989-11-20
Publication date: 1991-07-30
Anticipated expiration: 2004-11-20
Also published as: JP2520864Y2

Description

[Brief explanation of the drawing]

第１図はこの考案装置の第一の実施例を示す縦
断側面図、第２図は第１図を−線で縦断した
正面図、第３図は同上の一部の作用を示す縦断正
面図、第４図，はセツト確認棒の作用を示す
一部縦断正面図、第５図は第２の実施例を示す一
部縦断側面図、第６図は同上のアダプタの一部切
欠後面図、第７図は従来のチヤツク交換装置の一
例を示す縦断側面図である。３０……主軸、３１……フランジ、３２……チ
ヤツク取付手段、３３……把握爪、３４……本体
、３５……雌ネジ環、３６……雌ネジ、３９……
進退筒、４０……雄ネジ、４１……リング、４２
……ピン、４３……弧状溝、４８……小形傘歯車
、４９……傘歯車、５０……チヤツク取付用アダ
プタ、５１……パワーチヤツク、５３，６３，６
６……係合爪、６０……ドローバー、６１……ジ
ヨイント部材、６５……チヤツク爪操作軸、６７
……キー、６８……キー溝、７０……セツト確認
棒、７１……孔、７５……バネ、７６……溝、８
０……位置決め用外周面、８１……位置決め用内
周面、８４……ドライブピン、８５……凹孔。 Fig. 1 is a longitudinal sectional side view showing the first embodiment of this invented device, Fig. 2 is a longitudinal sectional front view taken along the - line from Fig. 1, and Fig. 3 is a longitudinal sectional front view showing a part of the operation of the same. , FIG. 4 is a partially cutaway front view showing the action of the setting confirmation rod, FIG. 5 is a partially cutaway side view showing the second embodiment, and FIG. 6 is a partially cutaway rear view of the same adapter. FIG. 7 is a longitudinal side view showing an example of a conventional chuck exchange device. 30...Main shaft, 31...Flange, 32...Chuck mounting means, 33...Grasping claw, 34...Main body, 35...Female screw ring, 36...Female screw, 39...
Advance/retract cylinder, 40...Male thread, 41...Ring, 42
... Pin, 43 ... Arc-shaped groove, 48 ... Small bevel gear, 49 ... Bevel gear, 50 ... Chuck mounting adapter, 51 ... Power chuck, 53, 63, 6
6...Engagement pawl, 60...Draw bar, 61...Joint member, 65...Chuck pawl operating shaft, 67
... Key, 68 ... Keyway, 70 ... Set confirmation rod, 71 ... Hole, 75 ... Spring, 76 ... Groove, 8
0... Outer circumferential surface for positioning, 81... Inner circumferential surface for positioning, 84... Drive pin, 85... Recessed hole.

Claims

[Scope of Claim for Utility Model Registration] (1) A female screw ring rotatably mounted in the main body of a chuck attachment means fixed to the front part of a spindle provided in the headstock of a lathe and rotated by manual operation. In a chuck exchange device consisting of a reciprocating cylinder having a male thread at the rear end that engages with the female threaded ring and a plurality of grasping claws at the front end for gripping a chuck mounting adapter, the reciprocating range and rotation of the reciprocating cylinder are as follows. A limiting means is provided to limit the range of movement to a set position and a non-set position of the adapter, and a joint member is provided at the tip of the drawbar passing through the main shaft, which rotates together with the forward/backward cylinder and moves forward and backward together with the drawbar. The protruding chuck pawl operating shaft is provided with an engaging pawl that fits between the engaging pawls of the joint member at the forward position when the engaging pawl of the adapter fits between the grasping pawls at the forward position. Chuck exchange device. (2) An annular coupling ring having radial engagement depressions and depressions is fixed concentrically to the front surface of the main body, and an annular coupling ring having radial engagement depressions and depressions that engage with the engagement depressions and depressions of the coupling ring is fixed to the rear surface of the adapter. 2. The chuck exchange device according to claim 1, wherein the couplings are fixed concentrically. (3) The front surface of the main body is provided with an annular fitting part having an outer circumferential surface for positioning that is concentric with the main body, and the rear surface of the adapter is also provided with an inner circumferential surface for positioning that tightly fits into the outer circumferential surface for positioning. A drive pin is fixed to a part of the front surface of the main body to engage with a concave hole on the rear surface of the adapter and integrally connect the main body and the adapter in the rotational direction.
(1) The chuck exchange device described in (1). (4) A set confirmation rod is inserted into a radial hole provided in a part of the main body so as to be freely advanced and retracted, and a spring is used to press the inner end of the set confirmation rod to the outer periphery of a ring fixed to the rear end of the reciprocating cylinder. A groove is provided on the outer periphery of the ring into which the inner end of the set confirmation rod can be inserted and the outer end of the set confirmation rod can be retracted from the outer periphery of the main body when the reciprocating cylinder is in the non-set position. The chuck exchange device described in (1) or (2) or (3).