JP2003094278A - Work delivery method and work delivery device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a work delivery method which can simplify the structure of a work fixing jig and is easy to cope with multiple kinds of products, and a work delivery device. SOLUTION: A delivery tool 2 is constituted by being provided with an inner diameter guide part 31 which can be fitted into an inner diameter part W1 of a work W and a washing nozzle 36 which is arranged on the front end side from the inner diameter guide part 31 and can inject a coolant supplied from a main spindle of a machine tool, the main spindle of the machine tool to which the delivery tool 2 is mounted is advanced toward the work W, and while the work W is being washed by injecting the coolant from the washing nozzle 36 arranged on the front end side, the work W fixed to the work fixing jig 1 is delivered by fitting the inner diameter guide part 31 of the delivery tool 2 into the inner diameter part W1 of the work W.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work payout method and a work payout device for paying out a work from an anchor type work fixing jig attached to a machine tool.

[0002]

2. Description of the Related Art Generally, an ikele type work fixing jig attached to a machine tool locates a work and
A locating mechanism for clamping and a clamping mechanism are provided to improve the positioning accuracy of the workpiece and the processing accuracy of the workpiece.

Further, a work payout device for paying out the work from the locating mechanism and the clamp mechanism of the work fixing jig is installed so that the work after completion of machining is delivered to the carrying device.

[0004]

However, the above-mentioned work ejection device is for ejecting the work while holding the inner diameter of the work, and this inner diameter is generally configured as a shaft hole or the like. In the case of the type that holds the inner diameter portion, there is a problem that the inner diameter cannot be processed.

Further, since the dispensing device occupies a predetermined space in the work fixing jig, there are some portions that cannot be processed by the machining tool, and the mounting position of the dispensing device is changed for each type of workpiece and the work fixing jig is installed. Will be done,
Many types of work fixtures are required, making it difficult to support multiple types.

Further, since the payout device is attached, the work fixing jig becomes expensive.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a work payout method and a work payout device which can simplify the structure of the work fixing jig and easily handle a wide variety of products. To do.

[0008]

A first aspect of the present invention relates to a method of delivering a work, which is provided from an inner diameter guide portion which can be fitted into the inner diameter portion of the work and a tip end side of the inner diameter guide portion, and which is supplied from a spindle of a machine tool. A cleaning tool capable of injecting a coolant is configured to constitute a payout tool, the payout tool is mounted on a spindle of a machine tool, and the payout tool is advanced toward the workpiece by the spindle, and a washing nozzle into the workpiece is provided. At the time of entry, the coolant is sprayed from the cleaning nozzle to wash the work, and when the inner diameter guide part of the ejection tool is fitted into the inner diameter part of the work, the inner diameter guide part ejects the work from the work fixing jig. Is characterized by.

A second aspect of the present invention relates to a work payout device for paying out a work fixed to a work fixing jig of a machine tool. The main work spindle of a machine tool is capable of advancing and retreating with respect to the work, and the work spindle is attached to the work spindle. Of the inner diameter guide part that fits into the inner diameter part of the work during the forward movement of the work and pays out the work from the work fixing jig, and is fixed to the work fixing jig by the forward movement of the spindle that is arranged at the tip side of the inner diameter guide part. It is characterized in that it comprises a cleaning nozzle that enters into the work prior to the inner diameter guide and injects the coolant supplied from the spindle of the machine tool to clean the work.

A third invention is characterized in that, in the second invention, the payout tool is mounted in a tool magazine of a machine tool and is delivered between the tool magazine and the spindle by a tool changer.

[0011]

Therefore, according to the first and second aspects of the present invention, the inner diameter guide portion fitted to the inner diameter portion of the workpiece is arranged in the discharging tool mounted on the spindle of the machine tool, and the workpiece is discharged by the forward movement of the spindle. In addition, the cleaning nozzle is arranged on the tip side of the inner diameter guide part, and the work is cleaned by the coolant sprayed from the cleaning nozzle during the discharging operation by the spindle advancement. No equipment required.

For this reason, the structure of the work fixing jig, which has been a limitation in the past, can be simplified, the degree of freedom in tooling for work processing is improved, various types of products can be easily handled, and the work inner diameter can be processed. Can be

Furthermore, by performing the work paying-out operation and the cleaning at the same time, the work for cleaning the work after removing the work and the reference surface becomes unnecessary.

In the third invention, in addition to the effect of the second invention, since the payout tool is mounted in the tool magazine, it is replaced with the working tool by the tool changer after the work is machined, and the work is fixed. Work can be paid out from the jig.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows an example of a work discharging device to which the present invention is applied, which is an example of machining a case (differential case) of a differential gear device as a work. And a payout tool 2 for engaging the inner diameter portion W1 of the work W fixed to the work fixing jig 1 and paying out the work W from the work fixing jig 1.

The work fixing jig 1 is movable on a bed (not shown) of a machine tool, for example, in XYZ directions,
In addition, it is composed of an ikele body 4 fixed on a table 3 rotatable about the Z axis, a locating mechanism 5 for locating the workpiece W, and a clamp mechanism 6 for clamping the locating workpiece W (normally, The X direction is the approaching and leaving direction to the machining spindle, the Y direction is the plane direction orthogonal to the X direction, and the Z direction.
Direction is set up and down).

The ikele body 4 is composed of a fixed portion 7 fixed on the table 3 and a holding portion 8 standing upright from the fixed portion 7 for holding and fixing the locate mechanism 5. The holding portion 8 is substantially circular. Through hole 9.

The locating mechanism 5 has a columnar member 1 extending in the penetrating direction of the through hole 9 with a base 10 fixed at a space radially outside the through hole 9 of the ikele body 4.
1, a plurality of seat ring holding members 12 and a reference seat ring 13 fixed to the tips of the columnar members 11 of the plurality of seat ring holding members 12.

The reference seat ring 13 has an annular shape and locates in the inner through hole 14 by blocking the movement of the work W in the radial direction, and one end face in the axial direction becomes the reference surface 15 and becomes the work W. Performs axial positioning of.

The clamp mechanism 6 is mounted on the holding portion 8 of the ikele body 4, and includes a cylinder device 16 and a clamp 17 that is moved back and forth by the cylinder device 16.

The cylinder device 16 is provided with a piston 19 which slides, is biased to a retracted position b by a built-in spring 18, and is moved to an operating position a by a supplied working fluid. The piston 19 has a rod portion. 20
And the tip of the rod portion 20 is connected to the rod 22 of the clamp 17 via the connecting plate 21.

The clamp 17 corresponds to the cylinder device 1.
6 is provided so as to be slidable, and at the retracted position b, its clamp end 23 is separated from the work W,
In the operating position a, the clamp end 23 engages with the back surface of the work W that is in contact with the reference surface 15 of the reference seat ring 13 to prevent the work W from being axially separated from the reference seat ring 13. .

The payout tool 2 is a replaceable tool that is attached to and detached from a spindle of a machine tool (not shown),
When the work is processed by the processing tool, it is stored in a tool magazine (not shown), and when the processing of the work W is completed, it is transferred from the tool magazine to the tool changer.
The tool changer replaces the machining tool currently mounted on the spindle and mounts it on the spindle.

The dispensing tool 2 has a holder 30 mounted on a spindle, an inner diameter guide portion 31 arranged at the tip of the holder 30 and engaged with an inner diameter portion W1 of the work W, and a work piece projecting from the inner diameter guide portion 31 to the tip. And a cleaning nozzle 36 for cleaning W.

The inner diameter guide portion 31 has a base portion 32 slidably fitted to the tip of the holder 30 so that the inner diameter guide portion 31 can move back and forth with respect to the holder 30. A spring 34 arranged between the rear surface of the contact portion 33 and the tip of the holder 30 biases the base portion 32 in the projecting direction to prevent the base portion 32 from coming out by coming into contact with the inner wall of the tip of the holder 30.

The front of the contact portion 33 to the end of the work W is formed into a fitting portion 35 to the work inner diameter portion W1, and the contact portion 33 is fitted to the work inner diameter portion W1 and the main shaft is advanced. At the same time, it functions to push the work W forward while holding it.

The cleaning nozzle 36 is provided at the front end of the inner diameter guide portion 31 and is provided with a plurality of nozzles 37 directed in the radial direction.
The cleaning liquid (coolant) supplied from the coolant introduction hole 38 communicating with the inside can be ejected radially outward from the plurality of nozzles 37.

Since the cleaning nozzle 36 is located at the tip of the tool serving as the dispensing device 2, it is mounted on the main shaft, and when the main shaft moves forward, it advances while ejecting the cleaning liquid, and the inner diameter W1 of the work W , Inside the work W, and
It functions to wash away cutting powder and the like adhering to the outer periphery of the work W.

When the work W is mounted on the work fixing jig 1 from a transfer device (not shown) and when the work W is paid out from the work fixing jig 1, the work W is supported by supporting two places below the work W. Reference seat ring 13 of fixing jig 1
A guide rail 39 for guiding the work W when approaching or leaving is arranged so as to project from the holding portion 8 of the ikele body 4.

The differential case as the work W shown here has a flange W2 on the outer circumference, and the central portion is expanded so that side gears (not shown) and a pinion mate gear pivotally supported by the pinion mate shaft are contained in the central portion. The final gear inner circumference (not shown) is guided by the inner peripheral boss W4 of the mounting surface W3 of the flange W2, and the mounting surfaces of the flange W2 and the final gear are brought into contact with each other by a nut or the like. It is supposed to be fixed.

Further, in this differential case (W), even if only the inner peripheral side is machined, various holes and boring for the pin-on-mate shaft, various counterbores for the pinion-mate gear, and side gears. For various counterbores and shaft holes on the back of the side gear (inner diameter part)
Machining such as various hole drilling is performed.

Next, the operation of the above-mentioned payout device will be described.

First, when the work W is located on the work fixing jig 1 and clamped, the clamp mechanism 6 is at the retracted position b by the spring 18 built in the cylinder 16, and the differential case as the work W is The guide rail 3 is carried by a carrying device (not shown).
While the outer periphery of the flange portion W2 is guided by 9, the inner peripheral side boss W4 of the flange W2 is fitted into the through hole 14 of the reference seat ring 13 to locate in the radial direction.

Further, when the work W is pushed in by the conveying device, the flange W is attached to the reference surface 15 of the reference seat ring 13.
The mounting surface W3 of the second member abuts to locate in the axial direction, and in this state, the working fluid is supplied to the clamp mechanism 6,
The cylinder device 16 operates and the clamp rod 22 advances to the operating position a, and the clamp end 23 engages with the back surface of the flange W2 to prevent the work W from coming off.

In this state, the various machining processes described above are performed. For example, as shown in FIG. 2, a hole on the rear surface of the side gear is processed by the inner diameter processing tool T.

The work W that has been machined is
Even if the processed portion is cooled and washed by the coolant during the machining, cutting powder scattered during the processing adheres to the processed portion and its periphery.

When the processing is completed, the dispensing tool 2 stored in a tool magazine (not shown) is conveyed to the tool changer, and the tool changer replaces the processing tool being mounted on the spindle and mounts it on the spindle.

Then, from the time when the main shaft is advanced and the cleaning nozzle 36 at the tip of the dispensing tool 2 is inserted into the inner diameter portion W1 of the work W, the cleaning liquid as the coolant is sent out from the inside of the main shaft, inside the holder 30, It is sprayed from each nozzle 37 of the cleaning nozzle 36 through the coolant introduction hole 38 of the guide part 31, and the inside of the inner diameter part W1 is cleaned to wash away the cutting powder.

The cleaning liquid sprayed from the cleaning nozzle 36 cleans the inside of the work W as the dispensing tool 2 advances, and reaches the outer periphery of the work W through the radial opening W5 provided in the work W, The cutting powder attached to the outer periphery of the work W is also washed away.

Then, the supply of the working fluid to the clamp mechanism 6 is stopped, the cylinder device 16 is moved to the retracted position b,
The clamp end 23 is moved to the retracted position to release the regulation of the work W in the axial direction.

When the main shaft advances thereafter, the fitting portion 35 of the inner diameter guide portion 31 is fitted into the work inner diameter portion W1, and the abutting portion 33 comes into contact with the end portion of the work W. By the forward movement of the main shaft, the mounting surface W3 of the flange W2 is separated from the reference surface 15 of the reference seat ring 13, and the through hole 14 of the reference seat ring 13 and the inner boss W4 on the work W side are disengaged.

Even in this state, since the cleaning liquid is continuously ejected from the cleaning nozzle 36, the cleaning liquid is ejected between the mounting surface W3 of the flange W2 and the reference surface 15 of the reference seat ring 13 to call between them. , The cutting powder around it is also washed away.

By the subsequent advance of the main shaft, the work W is discharged while being guided by the guide rail 39 along the outer periphery of the flange W2, held by the not-shown transfer device, transferred to the next step, and supplied with the coolant. And the spindle is retracted.

With respect to the forward movement of the spindle, the work W,
If the inner diameter guide portion 31 does not move for some reason, the spring 34 arranged between the back surface of the contact portion 33 of the dispensing tool 2 and the tip of the holder 30 elastically deforms, and an unreasonable load acts on the spindle. Prevent from doing.

In this embodiment, the inner diameter portion W1 of the work W is attached to the payout tool 2 mounted on the spindle of the machine tool.
An inner diameter guide portion 31 that fits to the inner surface of the cleaning tool 3 is disposed by the forward movement of the main spindle, and the cleaning nozzle 3 is provided on the tip side of the inner diameter guide portion 31 of the dispensing tool 2.
6 is arranged and the work W is cleaned by the coolant sprayed from the cleaning nozzle 36 during the payout operation by advancing the spindle, so that the work fixing jig 1 does not require a device for paying out the work.

For this reason, the structure of the work fixing jig 1 which has been a limitation in the past can be simplified, the degree of freedom in tooling for work processing is improved, and various kinds of products can be easily handled, and the work inner diameter portion W1 is processed. It is possible to achieve the effect that is possible.

Further, by performing the work paying-out operation and the cleaning at the same time, the work of cleaning the work W after removing the work and the reference surface 15 becomes unnecessary.

Although the differential case has been described as the target work W in the above-described embodiment, it is not shown in the drawings, but it may be a bag-shaped work having an inner diameter portion or a cylindrical work. It is applicable, and the work fixing jig is changed corresponding to the work shape, and the inner diameter guide portion of the dispensing tool is also changed corresponding to the inner diameter portion of the work.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a work payout device showing an embodiment of the present invention.

FIG. 2 is a sectional view showing a working example of the work.

[Explanation of symbols]

W work W1 inner diameter W2 flange W3 mounting surface 1 Work fixture 2 Payout tool 3 tables 4 body 5 Locate mechanism 6 Clamp mechanism 12 Seat ring holding member 13 standard seat ring 15 Reference plane 16 cylinder device 17 Clamp 30 holder 31 Inner diameter guide 35 Fitting part 36 Washing nozzle 39 Guide rail

Claims (3)

[Claims] 1. A dispensing tool is provided with an inner diameter guide portion that can be fitted into an inner diameter portion of a workpiece and a cleaning nozzle that is disposed on the tip side of the inner diameter guide portion and that can inject a coolant supplied from a spindle of a machine tool. Then, the payout tool is attached to a spindle of a machine tool, the payout tool is advanced toward the work by the spindle, and the work is washed by injecting a coolant from the wash nozzle when the wash nozzle enters the work, A work payout method, wherein the work is paid out from the work fixing jig by the inner diameter guide part when the inner diameter guide part of the payout tool is fitted into the inner diameter part of the work. 2. A work payout device for paying out a work fixed to a work fixing jig of a machine tool, comprising a main spindle of a machine tool capable of advancing and retreating with respect to the work, and a forward movement to the work attached to the main spindle. An inner diameter guide part that fits into the inner diameter part of the work and ejects the work from the work fixing jig, and inside the work fixed to the work fixing jig by the forward movement of the spindle that is arranged at the tip side of the inner diameter guide part. A work discharge device comprising: a cleaning nozzle that enters before the inner diameter guide and injects a coolant supplied from a spindle of a machine tool to clean the work. 3. The work delivery device according to claim 2, wherein the delivery tool is mounted on a tool magazine of a machine tool and is delivered between the tool magazine and the spindle by a tool changer.