Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23B—TURNING; BORING
  • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
  • B23B31/02—Chucks
  • B23B31/24—Chucks characterised by features relating primarily to remote control of the gripping means
  • B23B31/26—Chucks characterised by features relating primarily to remote control of the gripping means using mechanical transmission through the working-spindle
  • B23B31/261—Chucks characterised by features relating primarily to remote control of the gripping means using mechanical transmission through the working-spindle clamping the end of the toolholder shank
  • B23B31/265—Chucks characterised by features relating primarily to remote control of the gripping means using mechanical transmission through the working-spindle clamping the end of the toolholder shank by means of collets

Definitions

• the present invention relates to a spindle device of a machine tool, and more particularly, to a tool attaching / detaching mechanism in the spindle device.
• the above-mentioned structure is designed so that a tool or tool holder with a complementary tapered shank can be detachably mounted in the tapered tool mounting hole formed at the tip of the spindle of the spindle device of the machine tool.
• a draw bar with a tool holding part at the tip of the pull stud provided at the rear end of the tank and a tool holding part to be disengaged is extended into the main spindle unit, and the tool is normally held by a powerful spring such as a disc spring. Is engaged with the pull stud and urged and held at the raised position, and when the tool is removed, a downward force is applied to the rear end of the drawbar to disengage and displace to the pushing position.
• a spindle device of a machining center One example is well known and is disclosed and disclosed in the international application PCT / JP84 / 00337 filed by the present applicant as a spindle device of a machining center.
• a Bergrank type lever is used as a means for pushing down the drawbar in the spindle, and a pusher is provided at the tip of one arm of the lever, and Attach a force follower to the arm of the machine tool, and attach a cam at a fixed position on the machine tool base.
• a pressing force of a IIank lever is used to apply a pressing force to the drawbar or to release the pressing force.
• the rotation of the spindle in the alerting device equipped with such a tool attaching / detaching mechanism is performed at the upper end of the alerting device because the drawbar pressing means is provided in the rear end region of the primary plow as described above.
• a pulley is mounted, and a bifurcation motor that transmits the surface rolling force to the main shaft together with the pulley from a bishop motor fixedly arranged on the main shaft head via a transmission belt stretched on the thigh surface of the main shaft.
• the upper whirlpool As a structure capable of activating the attachment / detachment of the tool from the side of the spindle device of the machine tool, it engages with the pull stud of the tool attached to one end of the chit
• a drawbar having a disengageable tool engaging portion and extending into the chimney; and a head provided on the other end of the drawbar opposite to the tool engaging portion.
• a spring that constantly urges the drawbar toward the tool holding side, a drawbar presser that is held in a head of the drawbar and exposes a hemisphere, and an opening from a side surface of the main shaft.
• the de ⁇ is - is configured by including a ⁇ hole draw bar pressing rod that hemisphere of the bar pressing element is formed as a passage facing the drawbar pressing element according to ⁇ of the drawbar push lower rod
• the present invention provides a spindle device of a machine tool having a tool attachment / detachment mechanism capable of pushing down a drawbar through a tool and detaching a tool, and inserting or detaching the drawbar pushing rod into or from a passage on a side surface of the spindle. The push-down of the drawbar and the return by the bias of the spring are performed via the.
• FIG. 1 is a structural view showing a simplified structure of a tool attaching / detaching mechanism of a spindle device of a machine tool according to the present invention
• FIG. 2 is a mechanism schematically showing an example of an operating mechanism of a drawbar push-down rod.
• a spindle 10 of a tool attachment / detachment mechanism of a spindle device of a machine tool is rotatably held on a spindle head (not shown) via rotary bearings 12a and 12b.
• a lower end 14 of the main shaft 10 is formed with a tool mounting hole 1 S having a tapered hole shape, and the tool T is provided below the tool mounting hole 16. Can be disarmed.
• a pull stud 18 is formed in a part of the tool T, and when the pull stud 18 is pulled up in the tool mounting hole 16 of the main putter 10, a taper portion of a rainy person is formed.
• the tool T is fixed and mounted in the tool mounting hole 16 by close contact.
• a through hole 20 extending in the vertical direction in FIG. 1 is formed at the center of the main shaft 10, and a drawer 22 extends in the through hole 20.
• the draw bar 22 has a tool holding portion (chuck) 24 for engaging and disengaging with the pull stand 18 of the tool T at the lower end of FIG.
• the tool holding part 24 is disengaged from the tool T pull stud 18 and when it is lifted up, the tool holding part 24 is engaged with the tool T pull stud 18. And the tool T is pulled up to achieve the mounting of the tool T.
• a head 26 is formed at the other end of the draw bar 22.
• a spring holding hole 2 formed above the inner end surface 26a of the head 26 and the through hole 20 of the main shaft 10 is formed.
• a plurality of disc springs 3 are provided between the spring bar 8 and the spring seat 8 and constantly urges the draw bar 22 in a direction to pull up. That is, as long as the tool T is mounted in the tool mounting hole 16, the drawer 22 is raised so as to hold the tool T at the mounting position.
• a hemisphere 32 which forms a presser, is inserted into the spherical seat 32a on the outer end face 26b of the head 26 of the drawbar 22, and the hemisphere is formed. The portion protrudes outside the end face 26b.
• the spherical ball 32 protrudes from the main shaft 10 into one passage 34 formed in a lateral hole shape. It is made of steel.
• the passage 34 is formed as a through-passage, and the main shaft 10 is rotated around its central axis for mounting the tool.
• the passages 3 and 4 always stop with their openings in a fixed direction.
• a drawer pressing rod 36 having an outer diameter equal to the diameter of the passage is inserted into the passage 34 from outside the side surface of the main shaft 10, the front end of the insertion of the drawer pressing rod 36 is inserted.
• the drawbar 22 can be pushed down and pulled back in response to the drawbar pressing rod 36 being disengaged from the side surface of the main shaft 10, and hence the main shaft 10 can be moved.
• the end of the end where the tool ⁇ is to be attached and detached 1 It will be released from the installation of the structure, so that, for example, it can be used as the equipment space for the quick motor that drives the main shaft 10 in plane rotation ⁇
• a well-known linear drive-like cylinder device is attached to the rear end of the drawbar pushing rod 36, and It is only necessary to control the operation of the cylinder device IT in response to a command signal from the controller and ultimately automatically perform the insertion and removal of the de ⁇ -bar pressing rod 3S automatically.
• the operating mechanism shown in FIG. 2 can be used.
• the arm of the horizontal arm 62 protrudes from one of the arms of the double-arm member 56 and the tip S 2 a of the horizontal arm 62, and the spindle head 39 stands at an appropriate position. Pressed the drawbar against the supporting member 68, which was bridged by linking between the joints 66a, 66b formed at both positions with the tip 64a of the pillar portion 64: the rear end is fixed, moving this time, the draw bar presses rod 3 6 mounted Contact fluff in a posture moves in the horizontal way quotient, to ShuSatoshiatama 3 9, the main ⁇ 1 0 a tool attaching and detaching position of the main spindle At this time, an operating mechanism is configured that allows the drawbar pressing rod 36 to be inserted or removed from the passage 34 (FIG.
• the operation mechanism of the drawbar pressing rod has been illustrated and described as an embodiment.
• the gist of the present invention is that the drawbar itself is pressed and pulled back from the side of the spindle device. It goes without saying that other mechanisms and operating means may be used for the operating mechanism.
• a novel structure is provided as a tool attachment / detachment mechanism for a spindle device of a machine tool, in which a tool can be attached / detached by an operation from the side of the spindle.
• the upper end area opposite to the tool mounting end of the device can be used as the area where the spindle motor is deployed.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Gripping On Spindles (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=16213965

Family Applications (1)

Country Status (2)

Citations (1)

• 1986
  • 1986-12-08 JP JP18788986U patent/JPS6394607U/ja active Pending
• 1987
  • 1987-11-27 WO PCT/JP1987/000921 patent/WO1988004210A1/ja unknown

Patent Citations (1)

Also Published As

Similar Documents

Legal Events