JPS6389257A - Feeder for centering machine - Google Patents

Abstract

PURPOSE:To aim at the stabilization of work loading, by attracting a work making the axis perpendicularity, while holding a suction work of a pickup part making the axis horizontality with a chuck of a swiveling part cross-sliding and rotating, and delivering it to a centering machine. CONSTITUTION:When a cylinder 33 is extended, an upper arm 44 and a lower arm 40 come to rectilinear form, and the rubber pat 41 attached to one side of this lower arm 40 is pressed to a work 22 whose axis is placed vertically, attracting the work. Next, when the cylinder 33 is retracted, a contact member 43 of the turning arm 42 installed in the other side of the lower arm 40 collides with a stopper 34, whereby the lower arm 40 is rotated as far as 90 deg. around a fulcrum shaft 37, and the axis of the attracted work is made into horizontality. Under this state, a swiveling arm 29 having a chuck at its tip is turned and moved backward by a double acting cylinder 28 of a swiveling part, attracted by the suction pat 41, and the work whose axis is made into horizontality is held, thus it is delivered to a centering machine.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a centering machine for grinding the outer diameter of a workpiece such as an optical component, and particularly to a centering machine for grinding the outer circumference of a rotating workpiece that is clamped between a bell, a chidle, and a tip. This invention relates to a feeding device that attaches and detaches a workpiece to a machine.

The above-mentioned centering machine itself is well known, and an outline of the structure of the centering machine will first be explained with reference to FIG. 1.2.

A bell or gutter 7 is screwed to the bell shaft for inserting the work 22 into one end of the centering machine's bell shaft 3 and bringing out the "optical part" of the work 22, and the other end is attached to the bell shaft. A bell gear 6 for rotating the bell and gutter 7 is similarly attached to the shaft, and can be moved back and forth against the right guide 2 by latch and pinion movement by rotation of the arm 21, and serves the role of clamping the work 22 and optical centering. This prevents the workpiece 22 from moving during grinding.

In order to bring out the "optical center" of the workpiece 22 by inserting the workpiece 22 into one end of the workpiece shaft 11 with a bell or groove,
The tip and slot 8 are screwed onto the workpiece shaft,
A work gear 12 is attached to the other end for rotating the tip and gutter 8 in synchronization with the bell and gage 7, and transmits the rotational force transmitted by the bell motor 4 to the gear B14 through the transmission shaft 13.

This clamps the work 22 together with the bell shaft 3, brings out the optical center of the work 22, and prevents the work 22 from moving during grinding by the grindstone 15.

The grindstone L5 is fixed to one end of the shaft of a spindle 20, which is rotated by the rotation of the grindstone motor 17 via a pulley 18 and a belt 19, and rotates.
It serves to grind the outer diameter by moving the stage 16 forward.

The stage 16 is movable back and forth and left and right with respect to the base 1, and is moved by the movement of a cam etc., and is moved back and forth by a stopper etc.
The maximum and minimum values on the left and right sides are limited, so that the workpiece 22
Determine the movement of the grindstone 15 to grind the workpiece 22
It plays the role of determining the outer diameter and chamfer of the.

The opposing end surfaces of the bell and groove 7 and the tip and groove 8 are ground into sharp edges, and their role is to bring out the optical center of the workpiece 22 when the workpiece 22 is clamped, and to firmly fix the workpiece 22 so that it does not move during grinding. fulfill.

FIG. 2 is a detailed view of the kettle portion when the workpiece 22 is clamped.

During operation, the work 22 is brought to the front of the tip Yato 8, the arm 21 is rotated, the bell shaft 3 to which the Bell Yato 7 is attached moves forward, and the work 22 is moved to the front of the tip Yato 8 and the bell Yato 7.
At this time, the forward movement of the bell shaft 3 and the rotational position of the arm 21 are detected by a switch, and machining is normally started automatically. be.

When the start is applied, the grindstone 5 moves forward, and when chamfering the workpiece 22, it also moves left and right to chamfer and grind the outer diameter of the workpiece 22. After that, the grinding wheel 5 returns to the rear and waits at the origin.

This becomes one cycle and is repeated.

In the above-mentioned centering machine, loading and unloading of a workpiece, such as a lens, is done manually, which has the following disadvantages.

(1) Even if a machine with a large number of heads is manufactured, loading and unloading workpieces takes time and effort, making it impractical.

(2) Applying force to the tip of the workpiece, the tip, etc. may damage the workpiece or the tip or the tip.

(3) When loading a workpiece, it is difficult to manually mount the workpiece on the correct axis, making it impossible to improve centering accuracy.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an automatically operated workpiece feeding device that can pick up a workpiece fed as a vertical axis, attach the workpiece to a centering machine with a horizontal axis, and return the finished workpiece in the reverse order. .

Embodiments and drawings illustrating the present invention will be described. Similar parts or components are designated by the same reference numerals as in Figure 1.2 for clarity of explanation.

FIG. 3 shows a feeding device for a centering machine according to the present invention, in which a conventional processing machine has three blocks according to the present invention, ie, a pivot section 23.
, a pink-up section 24, and a clamp section 45 are attached to the main body base 1.

The rotating part 23 is fixed to the upper part of the centering machine left guide 10, and the workpiece 22 taken out by the pink amplifier part 24
The work is taken out from the receiver, and the workpiece is loaded between the front chimney 8 and the front bell chimney 7, and the workpiece 22 after processing is taken out from between the clamped end chimney 8 and bell chimney 7, and returned to the pink-up section 24. fulfill one's role.

The pickup unit 24 uses a suction vat to pick up the workpiece 22 that has been conveyed to the front part of the main body, and adjusts the direction of the workpiece to 90 degrees.
``The workpiece 22 is held until the turning section 23 comes.

The chuck 30 is fixed to one end of the rotating arm, and a pair of fingers 31 for chucking the workpiece 22 are attached to a claw portion that opens and closes using pneumatic pressure.

It serves to chuck the workpiece 22 together with the finger 31.

The pickup cylinder 33 is attached to the main body and is fixed to the stand 32 of the pink-up section 24 attached to the plate 46, and serves as a power source for taking out the work 22 from the take-out point and storing it. A stopper 34, which serves this purpose, is fixed to the stand 32.

When the pickup cylinder 33 is extended, the lower arm 40 and upper arm 44 are in a straight line due to the force of the spring 36.
When the pickup cylinder 33 is retracted and begins to rise upward, a contact member 43 attached to a rotary arm 42 attached to a lower arm 40 hits the stopper 34. When the pickup cylinder 33 is further retracted, the lower arm 40 overcomes the spring force of the spring 36 against the upper arm 44 and begins to rotate about the support pin 37.

In other words, the stopper 34 has the function of causing the lower arm 40 to rise as the pickup cylinder 33 moves upward, and then rotate, by abutting the contact member 43 attached to the lower arm 40 when the axis of the pickup cylinder 33 rises. accomplish

A pan 41 for suctioning the workpiece 22 is attached to one side of the lower arm 40, and a hole is made there for supplying negative pressure, and one end of the hole is connected to a pipe 3 leading to a negative pressure generator.
8 are connected. This serves to attract the workpiece 22.

A rotary arm 42 is attached to the other end, and is connected to the upper arm 44 by one support pin 37, so that it can rotate relative to the upper arm 44. In addition, a pin B39 is attached to receive one point of action of the spring 36, so that the workpiece 2 is moved up and down by the axis of the pickup cylinder 33.
When sucking up 2, the spring force of the spring 36 allows it to be in a straight line with the upper arm.

The pad is attached to the lower arm 40 and is made of a soft material (such as rubber) that does not scratch the work 22 because it becomes a contact surface when the work 22 is attracted.

A contact member 43 that abuts against the stopper 34 is attached to one side of the rotating arm 42 and is fixed to the lower arm 40.

The receiver transfers the work 22 to the rotating section 23, and after the work 22 is processed by the centering machine, the receiver takes the work 22 unloaded by the rotating section 23 and plays the role of returning the work 22 to its original position.

The clamp section 45 moves the bell shaft 3 to clamp the unprocessed workpiece 22 loaded from the pickup section 24 and the rotating section 23 between the bell orifice 7 and the tip orifice 8, and securely fixes the workpiece 22 so that it does not move during grinding. do. It also serves to move the bell shaft 3 and unclamp it when the rotating section 23 comes to pick up the workpiece 22 after machining.

Figure 4 shows the turning section 23 and the pink-up section 2 from the bell shaft 3 side.
4, and FIG. 5 is a view of the rotating part 23 and the pink amplifier part 24 seen from the front.

A double-acting cylinder 28 is attached to the main body and fixed on a plate 46, and the axis of the cylinder is
It can rotate forward and backward, and a rotating arm 29 is attached to its shaft, which serves to rotate the rotating arm 29 back and forth.

One end of the rotating arm 29 is attached to the shaft of the double acting cylinder 2, and a chuck 30 for chucking the workpiece 22 is attached to the other end.

The upper arm 44 is connected at one end to the pickup cylinder 33, and is rotatably connected to the lower arm 40, which has a pad 41 for picking up the workpiece 22, through a support pin 37. Also, a pin A35 is attached to receive one point of action of the spring, similar to the pin B39 on the lower arm.

The operation will be explained.

When the workpiece 22 is placed in a predetermined position on a pallet, magazine, indexing table, etc., the shaft of the pickup cylinder 33 is lowered. Then, the lower arm 40 and the upper arm 44 are connected to the spring 3.
The pad 41 becomes linear due to the spring force of 6, and the pad 41 comes to face the end surface of the horizontally placed workpiece 22, and the axis of the amplifier cylinder 33 is lowered to such an extent that the pad 41 comes into contact with the end surface. At that time, the negative pressure introduced from the negative pressure generator is guided into the bunt 41 through the hollow part of the lower part 40 along the tube 38. As a result, the workpiece 22 becomes puff) 4
It is attracted to 1. When the workpiece 22 is attracted to the pad 41, the axis of the pickup cylinder 33 rises,
The axis of the pickup cylinder 33 stops when the lower arm 40 becomes perpendicular to the upper arm 44. Then, the double-acting cylinder 28 on the side of the pink-up section 24 moves backward, and the chuck 30 attached to the swing arm 29 closes. Then, the workpiece 22 is attached to the finger 31 attached to the chuck 30.
is firmly fixed by. Then, the negative pressure is turned off and the workpiece 22 is transferred from the pad 41 to the chuck 30 with fingers 31.

Next, the double-acting cylinder 28 moves forward, and after moving forward, it turns and conveys the material between the tip shaft 8 and the bell shaft 7.

The double-acting cylinder 28 then moves backward, moving the workpiece 22 to the tip or chimney 8 end face. Then, the clamp cylinder 27 operates to advance the bell shaft 3 through the rank 26 and pinion 25, and securely fix the workpiece 22 with the bell, chisel 7, and tip chisel 8.

At this time, the chuck 30 opens and the double-acting cylinder 28 moves forward, rotates, and returns to the pink-up portion 24 side.

Then, machining begins, and the end face portion of the workpiece 22 is machined by the grindstone 15. When the machining is completed, the grinding wheel 15 retreats, the turning arm 29 again turns to the sharp side and retreats, and the chuck 30 closes to fix the workpiece 22 with the fingers 31. Then, the clamp cylinder 27 operates and the bell shaft 3 is moved backward. Then, the double-acting cylinder 28 moves forward and brings the rotating workpiece 22 in front of the pad 41 of the pick-up section 24.The double-acting cylinder 28 moves backward and attracts the workpiece 22 to the bunt 41 with negative pressure. After attracting the workpiece 22, the double-acting cylinder 28 moves forward.

After picking up the workpiece 22, the pickup cylinder 33 of the pickup section 24 is lowered, and the processed workpiece 22 returns to its original position. In this way, one cycle is completed, the processed workpiece 22 is transported, and then the unprocessed workpiece 2
2 is transported into position and the cycle repeats.

As shown in the above embodiments, by attaching the feeding device of the present invention to a horizontal centering machine, the workpiece 22 can be loaded and unloaded in a stable position. Guess work 22
, don't worry about the first one or the 8th grade.

(2) Work 22 can be loaded in a stable position 7. Work? 2's accuracy improves.

(3) By adding a line for conveying the workpiece 22 to a fixed position, the workpiece 22 can be automatically processed in multiple cycles, so that a large number of machines can be handled by one person.

This effect can be obtained.

[Brief explanation of the drawing]

1 and 2 show a known horizontal centering machine, FIG. 1A is a partially sectional plan view, FIG. 1B is a side view, FIG. 2 is a partially enlarged sectional view of the clamp part, and FIG. 3 to 5 show the feeding device of the present invention, FIG. 3 is a perspective view of the centering machine showing the overall configuration, and FIG. 4 is a partially enlarged end view showing the rotating part and pickup part of the feeding device in FIG. 3. FIG. 5 is a partially enlarged front view of the big amplifier section. 3...Bell shaft 4- Bell motor 7--Bell shaft 8--Tip shaft 15--Grinder whetstone 22- Workpiece 23--Swivel part
24.-Pickup part 28.--Double acting cylinder 29.--Swivel arm 30.--Chuck
31...-Finger 33--Pickup cylinder 34--Stopper 36--Spring 40...-Lower arm 42--Rotating arm 4
3--One contact member 44-- Upper arm 45-
・・・・Clamp part

Claims (2)

[Claims] (1) A feeding device that attaches and detaches workpieces to and from a centering machine that grinds the outer periphery of rotating optical components that are clamped between bells and chimes, and is placed with the axis vertical. A pickup unit that picks up a workpiece and transfers it to a rotating unit with the workpiece axis horizontal, a rotating unit that transfers the workpiece between the pickup unit and the clamp unit by back-and-forth movement and rotational movement, and an operation of the pickup unit and the rotating unit. a clamp section that synchronously transfers the workpiece between the rotating section and clamps it during grinding; the pickup section includes a lower arm having a suction pad that holds the workpiece; a pickup cylinder that moves the lower arm up and down; A feed for a centering machine, characterized in that the lower arm is provided with a device for rotating the lower arm at right angles to the axis of the pickup cylinder, and the lower arm is raised and rotated, and rotated and lowered by raising and lowering the pickup cylinder. Device. (2) The swinging section includes a double-acting cylinder that moves back and forth and swinging, a swing arm attached to the rod of the double-action cylinder, and a chuck with fingers attached to the tip of the swing arm. Feeding device for centering machine as described in Section 1.