JPS6056807A - Automatic work carry device machine tool - Google Patents

Abstract

PURPOSE:To improve accuracy in rotation and machining by making claws unclamp when both pistons for operating plungers are moved in each direction respectively, and making said claws clamp when said both pistons are restored, separating a work carry from an operating mechanism. CONSTITUTION:When oil, which is fed under pressure through a pressure passage 73, flows into a pressure chamber 69, a rear side piston 65 is moved backward and an operating flange part 70 is brought in contact with the front faces of the four supporting part 55, to support a work carry 41, whereas, a front side piston 67 is moved forward with its front side being brought in contact with plungers 53, which, in turn, is moved forward, causing both clamping claws 45, 45 to unclamp. When the pressure oil flows out by opening the passage 73, the piston 65 is restored by means of springs 71, causing the operating flange part 70 to be separated from the supporting parts 55, whereas, the piston 67 is restored by means of the springs 72 and separated from the plungers 53, both of the clamping claws 45, 45 clamp a workpiece W by means of four springs 48, and the plungers 53 are restored to their original positions, separating the work carry 41 from an operating mechanism 61.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic kerating device for transmitting the rotation of a kerating rod in a headstock to a workpiece engaged with the center tip of a headstock in a cylindrical grinder or other machine tool. .

In the conventional KeV-, a clamping bolt is screwed through the circumferential wall of an annular main body that fits into the workpiece, and the two prongs that come into contact with the Kere rod are fully protruding from the outer surface of the circumferential wall of the main body. ing. However, as is well known, C's keley requires a handmade mulberry by the maker to install, which takes a lot of effort. Therefore, in order to save time and automate this process, a device called an automatic work driver was invented. In this device, a cylinder is rotatably fitted to the front part of the center protruding from the headstock, a lever that comes into contact with the kelly rod is attached to the rear end of the cylinder, and a lever is attached to the front end of the cylinder.
It is equipped with a claw that automatically clamps the workpiece held at the tip of the center by the force that pushes it away. However, when the workpiece is rotated using this device, the workpiece becomes
Rotate based on the center tip,! :9, and since it tries to rotate with the rotation center of the cylinder as a reference, it is different from the above-mentioned case of Keret, which rotates with only the center tip at X tlg, and the rotation accuracy is poor, therefore,
Work L″1 degree is not good.

The purpose of the present invention is to eliminate the drawbacks of conventional products as described above,
An automatic machine with high accuracy in rotating the workpiece? It is to provide.

Next, examples of the present invention will be described.

1st Embodiment 1 (See Figs. 1 and 21) The automatic kerating device of this example has a front position of the center fitted to the headstock of a machine tool, as shown in Figs. 1 and 2. 1rl is equipped with a Kelley machine (1) equipped with a normally closed clamp claw (8) that clamps the workpiece (W+) engaged with the center tip (4) and a plunger (I4) that opens this clamp claw. , a ring-shaped piston 4 is installed in the front part of the center (2) to support the Kelet board (1) by moving in one direction and supporting the Kelet board (1) in the other direction. Move and operate the plunger +1.41 of the Kelley disk.
・17 works n +7. ff &1, both pistons (''
, (c) move in one direction and the other direction, respectively, 47? The y-pu pawl (8) is the unclamping screw, and both pistons (a).

When (c) is restored to its original position, the clamp claw (
8) is clamped to the workpiece (the workpiece), and the kerating machine (1), which is fixed to the workpiece (the workpiece), is separated from the operating mechanism CD.

As shown in Figure Ω, the Kelley board (1) has a rectangular claw hole (2) into which the tip (A) of the center plate is inserted into the middle of the base (2), which is made by bolting two thick plates together vertically. 3) are provided, and a two-step diameter central piston hole (4) and a small diameter side piston hole (51,
(5) in the vertical direction, and the center piston hole (4) in the upper 0111 and the piston hole (5
) and (5) respectively have pistons (4+) and (7
), (7), and also insert the center piston hole (4) in the lower part 4111 and the two piston holes 15+
, +5) and piston C6), (7) respectively.
, (7), and insert the opposing block-shaped clamp claws (8) and (8) into the upper and lower f, % of the claw holes (3) with the center tip (2) in between. 7. Connect the upper clamp pawl 8) to the upper center piston (6) and τ111.
The lower central piston (6) and the side piston (7) are bolted to the central piston (7), (7) and also have a lower clamping pawl (8).

(7) with bolts and upper and lower clamp claws (8),
The upper side piston hole (5+), the outer position of (51) and the lower side piston hole (5).

Outside (+71i?) of (5): A piston hole (9) with a two-stage diameter is bored in the vertical direction, and a piston θ0 with a diameter of one stage is slid into each piston hole (9), A helical spring (IIJ) that moves each piston (]O toward the small diameter end side by 44 degrees is inserted into the large diameter end side chamber of each pinuton hole (9), and a spiral spring (IIJ) is fitted into the small diameter end side chamber 1111+ of each piston hole (9). The chambers at the tips of the side piston holes (5) located close to the chambers are filled with oil, and the chambers communicated with each other through passages 0 and 0 are filled with oil. are connected via oil to the side pistons (7) located close to the pistons, and the helical springs 0υ
This device closes both lamp claws (8) and (8) to clamp the workpiece (at the same time).Also, as shown in Figures 1 and 3, the rear surface of the base (2) A two-step diameter plunger hole (U) is drilled in each side 11t of each center piston hole (4) in the force direction, and a two-step diameter (1) plunger hole (U) is drilled in each plunger hole (0). 14) Slide into each 7"?nsha hole (13) and pass the passage Qi through the central chamber of each central piston hole (4) in the vicinity of the central chamber (4), - upper side. Both upper plastic/jar holes (1 field, (13 center chamber and upper 1111
Fill the medium heat chamber of the central piston hole (4) of No. 1 with oil,
Both upper plungers (1, 041 were connected to the central piston (4) of J21Jll through K oil, -Fl
Fill the inner passage of l (1!Q, the central chamber of both lower plunger holes (1:!, +II) and the central chamber of the lower central piston hole (4) connected by IpQ. , when both lower plungers (1 υ (1 and υ) are connected to the central piston (1) of the lower Ti (II) via oil and one plunger (14) is moved rearward, the v111 clamp claw (8), (81 resists the seven spiral springs (11) and is designed to unwamp when 14 (1) is released. As shown in Figure 1, the springs are cut out on the rear side. At the rear end of the four plungers (14), a circular connecting ring 0 (
9, and the rotation part (r) does not come into contact with the side of the base (2) at work 9 (not shown in Figure 2)! ll/l 1
4 is also equipped with alpha power.

As shown in FIG. 7G, the operating mechanism 01) has a center 4 EIo part, a flange part 3, a large diameter part 2, and a medium diameter part 4.

A small-diameter threaded portion U and a conical tip (4) are successively arranged in series, and a piston rest with an annular cross-section in the shape of a ring is placed on the large-diameter portion (end) of the center. Slide a piston (T) with a circular cross section into the middle diameter part, screw a ring-shaped stopper into the center threaded part (T0), and attach the rear piston (H). Slide the front side 1 piston (A) into the [11 surrounding recess of ), and then press both pistons l
A! 1. A small annular pressure chamber Gl+ is formed between the front piston and the front four parts of the front piston (trout). i: When the stop position is inserted and the front piston word p is the front noise 1-,
The front surface of the piston (a) protrudes from the front of the stop ring (to) and comes into contact with the rear surface of KMR (2) of the Kelley disc, and four plungers protrude from the rear of the Kelley disc (1). Of (+4) (1111), the outer periphery of the rear piston C fathom (Tjil 9jAt &) is provided around the operating flange portion 6, and the rear 11111) screw l' (+When the frame retreats, that piston's] Izumi-made flange part (34 is connected to the four plungers (14) of the Kelley plate) by contacting the small joint ring +161, and the piston of the rear j1111 (') and the center flange part ( Insert a spiral spring that moves the rear piston forward between (c)1ii1
11 (Piston 11) A spiral spring ■ that retracts the front piston is fitted between 9 and the stop ring (7), and a hole is drilled at the center (axis position of 4) in the pressure chamber between both pistons. It communicates with the pressure passage (G).

When oil is forced into the pressure passage c9, the pressure oil enters the pressure chamber 1.
) flows into the front piston and moves forward against the spiral splash ■, and the front I of the piston protrudes from the front of the stop ring (to) and hits the rear surface of the base (2) of the Kelley disk. The piston (support) at the rear (if, It) moves backward against its helical spring α, and the operating flange portion 4 of the piston supports the Kelley disc (1) in contact with the connecting ring (1). 1(
1, the four plungers (14) of the Kelley machine move backward, and both clamp claws (81, jl) of the Kelley machine move backward.
Clamp the helical spring against the helical springs 0]).

In addition, when the center pressure passage port) is opened, pressure chamber C
3υ pressure oil leaked out and V? = ttllll piston (
A) is restored to its original position by pushing [11J] by the spiral spring EO, and the piston 71 layer is separated from the connecting ring (1 (9), both clamp claws (8), and IQI is a four spiral spring ( 1]) clamps the workpiece (■), the plunger α moves forward to restore it to its original position, and
The piston (4) at point σ1 moves back by its helical spring Φ and returns to its original position, and the origin of ))
11 is No. 17r), The Kelley machine (1), which is separated from the rear surface of (2) and stuck to the workpiece (W) that is engaged with the center tip, is j'i'4 decoy. ! 7+'j し I) Force・
Separate from

When using all four automatic gray devices in this example, the center (
1) Cylindrical grinder or other equipment (not shown)
f'Na'11:ll'llInsert into the center hole of one unit, and turn 1 of the king shaft. 5ll: iIi 1. Harden the protruding kelly rod (r) against the rotary drive part u7u of the kelly plate, and connect the center pressure passage (the figure shows the hydraulic source) to φi.
Pressure: [Pulse oil to 11th path 09, open the screw claws (8) and (8) and turn the underground knob. Clamp the 1:shi workpiece (w) on the center of It11, then put the pressure surface path (11:J) on the pressure surface path (11:J), and attach the Kulinoff claw (8), (8) wo II #6 (L). The workpiece (~V) is fixed at the 9.1 part of the master stand ++tll, and the workpiece OV)
・θ machine (1 piece separated from 2I, headstock rotation I)
The rotor itself is rotated to rotate the Kelley machine (r), and the integrated Kelley machine (1) and the workpiece (workpiece) are rotated.

4-, IIQ]-Crops (when in season, the Keret board (1) fixed to this is separated by 1 yen from the operating machine IN e21), so the Since it rotates with only the center point 0.0 as the base IJ4S without twisting, the rotation accuracy is quiet and the machining accuracy is high.

Second Embodiment (Refer to FIGS. 1 to 5 for the third embodiment) As shown in FIGS. 3 to 5, the automatic kerating device of this example has a kerating board 0]) and an operating device 114β1, similar to that of the previous example. ).

Kelley board (4υ) is the third do 1 and the work 9 shown in Fig. 4,
The center point (b) of the center is inserted into the middle part of the base G gong (pH cross), between the center part of the top surface of the base 0Q and the nail hole (upper part of 4) and the base. A claw guide hole (Q) is provided in the vertical direction between the center part of the lower end surface of the θ and the lower end surface of the claw hole. , both clamp claws (4G, (
1! Place the v hp-shaped claws of j in the upper and lower parts of the claw holes (G), sandwiching the center tips (4), and insert them into both lamps (
45, (4F) handle part 11 it/l (guide hole (
Both clamp claws (4
■.

(Two spring holes each on the end face of the handle of 45 (4Q,
('IQ is drilled in the vertical direction, and the radicle 5 (7) that closes the opening end of the nail guide hole (4) is bolted to the center part of the upper end surface and the lower end [nJ of the base (material)], respectively. , the upper end plate θ and the upper clamp claw (both spring holes (1
(Insert spiral springs 4 into 41j l111 to move the clamp claws of each to the center point!
Both screw holes (40,
The device is designed so that the workpiece (Wl) is clamped by fitting the clamping claws (40 and 45) into the workpiece (Wl) using a spiral spring. 51st N1
As shown in FIG. Then, pull out the base plate of each screw) from the open end of each piston hole (I), and insert the connecting pieces υ on both sides of the handle of both clamp claws (T) and (45). The protruding end of piston 6Q is connected to one connecting eye of the clamp claw located close to the end, and the upper clamp claw is attached to both pistons of upper 1i111. Connect the 31L rings, and also connect the lower Franz claw (2) to the lower piston rings (G), and connect the base (2).
Each screw on the rear surface) :y :Jldll Drill plunger holes 2 in the front and back direction at the outer positions, and slide the (end) of the plunger into each plunger hole φ, and then tighten the rear end of each plunger extension. The opening end of each plunger hole IIi is opened, and the chamber at the tip of each plunger hole is communicated with the chamber at the tip of the piston hole 191 located close to that chamber through a passage +541, and communicated through 4) of each passage. Each chamber is filled with oil, and each plunger section is connected via oil to a piston leaf located close to the plunger.
) forward, the two-way pump claws (45, (45
The device is operated so that the seven helical springs open and unclamp against the zero barrel. As shown in Fig. 5, outside the protruding rear end of each plunger σi31 (11! On the side of the base
) is provided with a protruding rotary drive line wheel that comes into contact with it.

As shown in FIG.
A flange portion is provided at the center of the piston 34, and a piston having an annular cross-section of 1. , Sleeve LQ & This annular piston Rino is slid into place, and the center sleeve 4 - Front 111
1 with ti'e l! , 11th tip! lii^6 after 4jl
Insert an annular stopper (1) in position 11), place the front biston (i7) on the front four parts of the rear piston, and make both pistons move back and forth (11). The annular pressure chamber (formed in both halves and connected to the 7 support rods of the Kelley disk)
The piston of IEj after being positioned 11't on the outside of part Q)-■
Outer circumference 1) A flange part 4 is provided at the IJ end to protrude inward, and when the rear piston holder retreats, the operation 7 of the piston 7 is connected to the 4 support parts 1 of the Kelley board.
i Ij+ + When the piston Qin on the 11■ side moves forward, the front surface of the piston ←η comes into contact with the protruding rear end of the plunger (53) of the extended piston (53). Device Kt, L, between the rear piston and the center flange part 6, a helical spring (lυ) that advances the rear piston is fitted, and the front piston support and the flange at the 1iiJ end of the sleeve (4) are inserted. A spiral spring Q is fitted between the two pistons to move the front piston backward, and a pressure passage (/3 .

When oil is forced into the pressure passage Q, the pressure oil flows into the pressure chamber O.
The rear piston spring (71
＞, the operation flange part of the piston σ0
is in contact with the front surface of one of the supports of the Kelley board to support the Kelley board II), while the front piston moves forward against its helical spring (7→), comes into contact with the protruding rear ends of the four plungers (53) of the Kelley machine, and the plungers (to) move forward, and one clamp claw (gj, (45) of the Kelley machine has seven spirals). Spring (
Unclamp against j→. When the center pressure passage Q3 is opened, the pressure oil in the pressure chamber (68) flows out, and the rear (till) piston QJ is released from its helical spring (71).
When the front il [i j, is returned to its original position by 1x, the operating flange Q0 of the piston is separated from the supporting parts of the Kelly disk, while the front piston Oη is moved by its helical spring ( The piston D is moved back to the original position by the seven helical springs, and the piston D is separated from the plunger (531) of the Kelley machine. The plunger moves backward and restores to its original position, and the workpiece engaged with the center tip (the workpiece is clamped in place).
The four swords are separated from the operating mechanism 031).

When using the automatic kerating device of this example, it is the same as when using the previous example.1 Also, the Ken-ban 0υ fixed to the workpiece <W) is separated from the operating mechanism Yu υ, Since the workpiece 09 rotates based only on the center tip (4), the rotation accuracy is high.

As is clear from the description of the above-mentioned two embodiments, the present invention is directed to;
ll1st place: Sae is equipped with a kerating machine that is rotatable by a kerating rod on the headstock, which is equipped with a permanently closed clamp claw that clamps the workpiece that is engaged with the tip of the center, and a plunger that opens this clamp claw. , Center 1111
An operating mechanism is installed in the section, in which an annular piston that moves in one direction to support the Kelley disk and an annular piston that moves in the other direction and operates the plunger of the Kelley disk are inserted so that they can be restored to their original positions. When the piston moves in one direction and the other direction, the clamp claw of the Kelley machine unclamps, and when the stroke and 07 tons return to their original positions, the clamp claw of the Kelley machine clamps the workpiece, and This is an automatic kerating device for a machine tool, characterized in that the fixed kerating disk is separated from the operating mechanism.

In this automatic kerating device for machine tools, when the clamping claws of the kerating machine are clamped to the workpiece, the kerating machine, which is fixed to the workpiece, separates from the operating machine, so that the workpiece is centered. Turn and rotate 7 times based only on the tip of the tip.

Therefore, rotation accuracy is high and machining accuracy is high.

[Brief explanation of the drawing]

FIG. 1 is a partially longitudinal side view of an automatic kerating device for machine tools according to the first embodiment 41Aj of the present invention, FIG. 2 is a partially longitudinal front view of the device, and FIG. 3 is a partially longitudinal sectional front view of the same device. Fig. 5 is a partially vertical front view of the machine, and Fig. 5 is a sectional view taken along the line V--V of Fig. 5. 1: Ceramic plate 8: Clamp claw 14 nib ginger 21: Operating mechanism 22: Center 27: Point 28: Pinion 29: Piston 41: Ceramic disc 45: Clamp claw 53 nib 2 jar 61: Operating mechanism 62: Center 64: Point etc.) 5: Piston 67: Piston W: Fractured workpiece r: Kelley rod No. 4 Figure-49- O 5 [¥]

Claims (1)

[Claims] A workpiece that is engaged with the tip of the center is clamped at the front position of the center that is fitted into the headstock of the machine tool.
? Closed type clamp claw and opening this clamp claw 1
A Kenji disk equipped with a gear is rotatably provided by a keley rod on the headstock.
- An operating mechanism is provided in which a 3-9-shaped piston that moves in one direction to support the Kelley board and an annular piston that moves in the other direction and operates the plunger of the Kelley board are fitted so that they can be restored to their original positions; When both pistons move in one direction and the other direction respectively. When the clamp claw of the Kelley machine unclamps and both pistons return to their original positions, the clamp claws of the Kelley machine clamp the workpiece, and the Kelley machine, which is fixed to the workpiece, separates from the operating machine <tl. An automatic kerating device for work 1)) characterized by being equipped as follows.