JPH0637842Y2 - Auto loading device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an automatic loading device capable of unmanned processing by automatically inserting and gripping relatively short workpieces into the workpiece gripping portion of an NC lathe in sequence.

[Conventional technology]

As a conventional technology for processing a work by an NC lathe, one in which a worker manually inserts a material into a chuck and then performs automatic processing, or a work rest is provided on one surface of a turret arranged in a position facing the spindle, There is a method in which an operator manually attaches the works to the work rest one by one, and then automatically operates such as mounting on a chuck and machining. Also,
There is also a method of attaching and detaching the work using a robot, bar feed device, etc.

[Problems to be solved by the device]

In the case of the method in which the worker attaches to the chuck or the work rest, there is a problem that so-called unmanned operation cannot be performed, which is an obstacle to automation and work efficiency cannot be improved. Further, when there are many workpieces to be machined and the machining time is extremely short, the above problem causes an extremely great weight, and a solution thereof has been demanded. Further, the method using a robot or a bar feed device has a problem that the device is large and expensive.

The present invention was devised in view of the above requirements, and enables unmanned work for attaching and detaching a work piece,
It is an object of the present invention to provide an automatic loading device capable of improving work efficiency and easily attaching and removing a work.

[Means for Solving the Problems]

In order to achieve the above object, the present invention provides a spindle for fixing and rotating a work grip, a turret arranged at a position facing the spindle and fixing a plurality of tools at an end, and a turret for rotating the turret. In a turning machine having a tool rest that movably supports, a cartridge that movably loads a plurality of works in series and a work rest that is fixed to a part of the surface of the turret and that mounts the cartridge in a fixed position. When,
An auto having a pusher that is provided on the same axis as the main shaft and that pushes out the work in the cartridge to the main spindle side, and a work pushing member that is provided in the work holding part and that pushes the finished work out to the outside from the work holding part. It constitutes a loading device.

[Action]

A cartridge preloaded with a plurality of works is mounted on a work rest fixed to a part of the surface of the turret. Rotate the turret to automatically index and position the work in the cartridge so that it faces the collet chuck at the front of the spindle.
One into the collet chuck. There is a stopper or the like for positioning the inserted work in a fixed position in the collet chuck, and the work is gripped and fixed in the fixed position of the collet chuck. The work is machined by a predetermined tool mounted on a base holder fixed to the turret. When the processing is completed, the processed work is pushed out of the collet chuck by the projecting device in the collet chuck.
The same steps are repeated thereafter. That is, a series of operations of automatic loading of unmachined work, automatic machining, and automatic unloading of machined work are automatically performed.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the auto-loading device of this embodiment is roughly classified into a plurality of works which are fixed to a part of a surface of a turret 7 of a tool post that moves in the X and Z directions for work machining. A cartridge 3 to be loaded (FIG. 2), a work rest 1 on which the cartridge 3 is mounted, a pusher 4 for pushing the work 2 in the cartridge mounted on the work rest 1 toward the main spindle 8, and a pusher 4 provided on the main spindle 8. It is composed of a stopper 5 having a function of pushing out a work.

Hereinafter, these structures will be sequentially described.

The spindle 8 is rotatably supported by a spindle stock 9. A collet chuck 11 is fixed to the front part of the main shaft 8, and a sleeve 42 is moved back and forth via a draw bar (not shown) by driving a cylinder (not shown) at the rear part of the main shaft in the direction of the main shaft axis. The collet 41 fitted in the sleeve 42 opens and closes according to the operation of the sleeve 42, and grips or releases the inserted work 2. A stopper 5 is arranged in the center of the main shaft 8. A work pushing member 36 is attached to the tip of the stopper 5. Work extruding member
The tip end 36a of the reference numeral 36 is configured to be pressed by a spring incorporated in the work pushing member, and has a function of positioning the work and pushing the work 2 from the collet 41 after the work 2 is processed. is doing. That is, the tip end portion 36a of the work pushing member 36 normally projects from the end face of the work pushing member, but when the work 2 is inserted into the collet opened by the pusher 4 to be described later, it is retracted to the end face of the work pushing member 36. Therefore, the work 2 is positioned at the end surface of the work pushing member 36.

Further, after the positioned work 2 is gripped by the collet chuck 11 and the work 2 is processed, the collet chuck 11 is loosened and the work 2 is removed from the collet chuck 11 by utilizing the pressing force of the spring in the work pushing member 36. Extrude into. Then, the work 2 extruded by the work extruding member 36.
Are stored in a bucket 35 provided on the bracket 13. The headstock 9 is placed on a base 12, and a bracket 13 is connected to the base 12.

As shown in FIG. 3, the turret 7 has a plurality (for example, 10-sided).
It is composed of those having
A base holder 14 having 15 (Fig. 1) is fixed. In this embodiment, as shown in FIG. 3, the work rest 1 is fixed on one surface thereof. Workrest 1 is fixed table 23
And a storage block 26 and the like. This fixed base 23
Is fixed to one surface of the turret 7 with a key 24 and a bolt 25, and a cartridge storage block 26 is fixed to a fixed base 23 with a bolt 27. Cartridge storage block
A key 28 is fixed to the 26 by a bolt 29, and the key 28 is fitted in a key groove of the cartridge body 18.

Next, the configuration of the cartridge 3 mounted in the work rest 1 will be described with reference to FIGS. 2 to 5. In the present embodiment, a case where a hexagonal member is loaded as the short work 2 will be described, but the present invention is not limited to this.

The cartridge 3 is composed of a cartridge body 18, a sliding block 17, a spring 20, a guide screw 21, and a fixing plate 16.

The work 2 is held by being clamped by the fixing plate 16 and the pressing block 17. As shown in FIG. 4, the fixing plate 16 and the pressing block 17 are formed of elongated block members so that a plurality of (six in the figure) works 2 can be held. As shown in FIG. 5, the pressing block 17 is slidably supported by the cartridge body 18 which is also elongated, and the bolt 17
It is prevented from falling off by 19 and is regulated by guide screw 21 (Fig. 3).

A plurality of (four in the figure) springs 20 are interposed between the pressing block 17 and the cartridge body 18, and
17 is urged to the work 2 side. The plate 22 fixed to the cartridge body 18 with the bolts 34 is for preventing the loaded work 2 from coming off. The work of loading the work 2 into the cartridge 3 having the above structure is performed in advance outside, and these cartridges are pooled.

The cartridge 3 loaded with the work is the cartridge body
While the 18 is aligned with the key 28, it is inserted into the cartridge storage block 26 and positioned by the positioning member 30 at a predetermined position.

The pusher 4 is composed of an extruding tool 32 that is connected to a cylinder 31 and a piston and is capable of advancing and retracting, and is supported by a stay 33 fixed on a bracket 13. The push-out tool 32 is arranged on the same line as the axis of the main shaft 8, and is also on the same line as the center line of the work rest 1 which is rotated and positioned. Then, the insertion line of the work 2 in the cartridge 3 inserted in the work rest 1 is also arranged on the same line. When the cylinder 31 is operated by a pressure source (not shown), the pushing tool 32 advances to the work 2 side, and the work 2 is inserted into the collet chuck 11 so as to be pushed out one by one.

Next, the operation of this embodiment will be described in more detail.

First, the work 2 is manually inserted into the cartridge 3 shown in FIG. 2 at another place. The work 2 is pushed against the spring 20 and held and held in the pressing block 17 and the fixing plate 16.

By repeating the above-described operation, a plurality of works 2 are loaded in the cartridge 3 to the full extent. The cartridge 3 is inserted into the cartridge storage block 26 of the work rest 1 and fixed. Here, by operating a button (not shown) of the machine, the turret 7 rotates to index the surface of the work rest 1 and position it at a position where the spindle axis and the work 2 axis in the work rest 1 coincide. That is, the work 2 in the cartridge 3 is positioned at a position facing the main shaft 8. Then, when the pusher 4 is operated, one work 2 in the cartridge 3 is inserted into the collet chuck 11 of the main shaft 8. The work 2 is positioned by contacting the work pushing member 36 at the tip of the stopper 5, and is fixed by the collet chuck 11.

Next, after returning the pusher 4 to the position where the tool rest can be turned, the turret 7 is rotated to sequentially index and position the tools necessary for machining the work 2, such as a chamfering bite, and perform predetermined machining. I do. When the processing is completed, the collet chuck 11 opens, and the processed work 2'is the work extruding member.
The bucket is pushed out of the collet chuck 11 by the 36
Stored in 35. Thereafter, the same process is repeated to finish the processing of the work in the cartridge 3. Since all of the above operations are automatically performed, unmanned operation can be performed except for loading the cartridge 3.

In this embodiment, the work rest 1 is provided only on one surface of the turret 7.
Although it was fixed, it may be fixed on another surface. Further, as described above, the shapes and the numbers of the works 2 loaded in the cartridge 3 are not limited to those of this embodiment.

[Effect of device]

As is clear from the above description, according to the present invention,
It is possible to automate the attachment and detachment of short workpieces with a simple device, to enable unmanned operation, and to improve production efficiency and machine operation rate. In addition, because the production efficiency can be improved by unmanned operation with a simple device,
The economic effect will be enormous.

[Brief description of drawings]

1 to 5 respectively show one embodiment of the present invention, FIG. 1 is a side view showing the overall structure, FIG. 2 is an axial sectional view of a cartridge, and FIG. 3 is an axial sectional view of a work rest, 4 is a sectional view taken along line IV-IV in FIG. 3, and FIG. 5 is a sectional view taken along line VV in FIG. 1 ... Work rest, 3 ... Cartridge, 4 ... Pusher, 7 ... Turret, 8 ... Spindle, 26 ... Cartridge storage block, 32 ... Pushing tool. 36: Workpiece extruding member.

Claims (1)

[Scope of utility model registration request] 1. A main shaft for fixing and rotating a work holding part, a turret arranged at a position facing the main shaft for fixing a plurality of tools to an end thereof, and a tool post for rotatably supporting the turret. In a turning machine having a cartridge, a cartridge for movably loading a plurality of the works in series, a work rest fixed to a part of the surface of the turret for mounting the cartridge in a fixed position, and a shaft coaxial with the spindle. An automatic loading device comprising: a pusher that is provided on a line to push the work in the cartridge toward the spindle, and a work pushing member that is provided in the work holding portion and pushes out the finished work from the work holding portion to the outside. .