JP2547990B2 - Automatic lathe - Google Patents

Description

TECHNICAL FIELD The present invention relates to an automatic lathe, and more particularly to an automatic lathe having a novel chip receiving device for receiving chips and cutting oil.

[Prior Art] A conventional automatic lathe is configured such that cutting by cutting and flowing cutting oil flow into a bed, and cutting oil from which chips have been separated is stored in an oil tank in the bed.

[Problems to be Solved by the Invention] In the above-mentioned conventional example, the cutting and the cutting oil are both housed in the bed, so the following problems occur.

First, the volume for cutting and containing cutting oil is limited. Secondly, the heat generated by cutting is transferred to the bed via the cutting and cutting oil, and the headstock and the tool rest provided on the bed are thermally deformed. Third, cleaning is difficult. If this cleaning is not done completely, the chips will mix if different materials are used. Fourth, the machine must be stopped until the cleaning is complete.

An object of the present invention is to provide an automatic lathe that solves the above-mentioned problems of the prior art.

[Means for Solving Problems] Means of the present invention for solving the above-mentioned problems of the prior art are a bed placed on a floor, and a main shaft provided rotatably on the bed. A spindle headstock that slides in the spindle centerline direction, and a column provided in front of this headstock,
A guide bush held on this column and provided on the center line of the spindle, a tool rest provided on the front side of the column and sliding in a direction orthogonal to the spindle center line, and a workpiece gripped by the spindle are In an automatic lathe that penetrates through the guide bush and projects forward, and the workpiece is located near the mouth of the projected guide bush, the front end of the bed is directly below the machining position. Up to the front end of the bed and below the processing position, a chute provided overhanging forward, and a part of the upper opening inserted under the chute, and the bed. And a chip receiving device which is independently arranged.

[Operation] Since the cutting receiving device is arranged independently of the bed, when removing chips or replacing cutting oil,
It can be replaced with a new cutting receiver, removed elsewhere if desired, or replaced with cutting oil or cleaned, without having to stop the machine. Furthermore, since the cutting receiving device is placed independently of the automatic lathe,
The heat of chips and cutting oil is not transferred to the automatic lathe, and the accuracy does not deteriorate due to thermal deformation.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. On the upper surface of the bed 1 placed on the floor, the headstock support 2
However, the columns 3 are fixed to the front end portions, respectively.
A horizontally arranged guide rod 4 is fixed between the headstock support 2 and the column 3, and a headstock feed screw 5 is rotatably supported in parallel with the guide rod 4. The guide rod 4 is slidably provided with a headstock 7 which rotatably supports a main shaft 6. That is, the center line 8 of the main shaft 6 is provided so as to be parallel to the guide rod 4. The headstock 7 is screwed onto the headstock feed screw 5, and the headstock feed screw 5 is rotationally driven by a headstock feed motor 9 fixed to the headstock support 2 via a belt (not shown).

Therefore, when the headstock feed motor 9 is rotationally driven, the headstock feed screw 5 rotates, and the headstock 7 is moved along the guide rod 4 in the direction of the spindle centerline 8. Also the spindle 6
Is driven to rotate by a spindle rotation motor (not shown).

The column 3 supports a guide bush 15 on the spindle centerline 8. A first guide path 3a is formed below the guide bush 15 on the front side surface of the column 3 in a direction orthogonal to the spindle center line 8 and in the horizontal direction (direction orthogonal to the plane of the drawing). The first tool rest 16 is slidably arranged. On the first tool post 16, two tools 17 (shown as 1 in FIG.
Only one is shown). The first tool rest 16 is driven by a feed motor (not shown).

A second guide path 3b is formed above the guide bush 15 in the column 3 so as to be orthogonal to the spindle centerline 8 and extend in the horizontal direction. The second tool post support 20 slides on the guide path 3b. It is movably arranged. Further, the second tool support base 20 is provided with a third blade extending perpendicularly to the spindle center line 8 and extending in the vertical direction.
A guide path 21 is formed, and a second tool post is formed on this guide path 21.
22 is slidably arranged. On the second tool rest 22, a plurality of tools 23 (only one is shown in the drawing) are attached to the front surface of the guide bush 15 so as to hang down from above. The second tool rest 22 is horizontally moved by a feed motor (not shown) to move the second tool rest 20.
It is vertically driven by a second tool post feed screw 26 which is driven via a belt 25 by a second tool feed motor 24 fixed to.

Therefore, the workpiece that is gripped by the spindle 6 and moves in the spindle centerline direction together with the headstock 7 penetrates the guide bush 15 and projects forward, and the workpiece is projected.
The workpiece is processed by the tools 17 and 23 approaching the mouth portion of 15. A processing position is provided, and the front end portion of the column 3 and the front end portion of the bed 1 are almost immediately below the mouth portion of the guide bush 15.

In front of the guide bush 15, a hole drilling tool base having a plurality of hole drilling tools 30 (only one is shown in the drawing) extending in the direction of the spindle centerline 8 and arranged parallel to the horizontal direction. 31 is provided, and the hole machining tool base 31 is attached to the hole machining tool base support 32 fixed to the first tool rest 16 so as to be movable in the direction of the spindle centerline 8. The front end 1b of the upper part of the bed 1 is almost directly under the first tool rest 16, that is, the tool.
The cutting and cutting oil receiving box 40 for guiding the cutting chips and cutting oil from the front of the bed 1 to the chips and cutting oil receiving box 40 is cut off almost directly below the machining position by 17, 23.
An overhanging short portion 1a is formed in the opening. A groove 1c for flowing cutting oil or the like is formed around the bed 1, and the groove 1c communicates with the side of the shout portion 1a.

On the floor in front of the bed 1, the chip and cutting oil receiving box 40 independent of the bed 1 is arranged. The chip and cutting oil receiving box 40 is located above and in the shout portion 1a of the bed 1.
The portion opposite to is an opening, and a chip receiving cage support plate 41 formed of a wire mesh is provided in the lower middle portion of the shout portion 1a. On the chip receiving basket support plate 41, a chip receiving basket 42 formed by a wire mesh is placed. Further, the lower part of the chip and cutting oil receiving box 40 is connected to an oil tank, a strainer 43 is arranged close to the bottom, and a cutting oil take-out pipe 44 provided on the outer side surface of the chip and cutting oil receiving box 40. And are connected via a pipe 45.

A pump 46 is arranged inside the bed 1.
The discharge-side pipe 47 connected to the pump 46 extends above the guide bush 15 and supplies cutting oil to the cutting portion of the workpiece. A suction-side pipe 48 connected to the pump 46 extends outside in front of the bed 1. Then, when using, the cutting oil extraction pipe 44
This pipe 48 is inserted into and used.

Next, the operation will be described. The workpiece is machined by the movement of the spindle 6 in the direction of the spindle center line 8 and the movement of the selected arbitrary tools 17, 23, 30 in the direction of the guide bush 15. The chips generated by this cutting and the cutting oil supplied to the cutting portion drop into the chip receiving basket 42 through the shute portion 1a, the chips are collected in the chip receiving basket 42, and the cutting oil passes through the chip receiving basket 42. It is stored in the oil tank of the chip and cutting oil receiving box 40. The cutting oil is filtered by the strainer 43 and supplied to the cutting oil extraction pipe 44 through the pipe 45. The cutting oil from the cutting oil extraction pipe 44 is sucked up by the pump 46 through the pipe 48, and is supplied from the pipe 47 to the cutting portion of the guide bush 15.

As described above, since the chips and the cutting oil receiving box 40 are provided independently of the bed 1, the volume for storing the chips and the cutting oil can be increased, and the heat of the cutting oil does not affect the bed 1. When removing the chips, the chips and the cutting oil receiving box 40 may be replaced with new chips, the machine may be hardly stopped, and chips made of different materials are inevitable. In addition, exchange and cleaning of cutting oil is done in the chip and cutting oil receiving box.
The 40 can be done very easily and at any time, away from the automatic lathe.

[Effects of the Invention] As is apparent from the above description, according to the present invention, the following effects can be obtained. First, the bed ends almost immediately below the processing position, and chips and cutting oil drop onto the chute that overhangs forward from the bed, so heat from the chips and cutting oil is not directly transmitted to the bed.

Secondly, since the position of the chute is the upper part of the front end of the bed that ends almost immediately below the processing position, the position facing the spindle and the front end of the bed, there is no restriction on the floor area of the chip receiving device, The height is also above the bed, so it is a sufficiently high position. That is, the volume of the chip receiving device can be made sufficiently large. The shape of the chute is a chute that overhangs forward from the bed. Therefore, the chip receiving device can be inserted sufficiently deeply, and there is no risk of cutting oil spilling.

Thirdly, since the chip receiving device is arranged independently of the bed, the chip receiving device can be cleaned without stopping the machine and the chip receiving device can be easily cleaned.

Fourthly, in the headstock sliding type automatic lathe, there is a machining position that is a fixed position close to the base of the guide bush, and since there is a guide bush and column, chips and cutting oil slide on the headstock. It does not flow to the surface.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention, FIG. 2 is a longitudinal sectional view showing a portion of a shout portion, and FIG. 3 is a front view of the portion of the shout portion. 1: Bed, 1a: Chute part, 3: Column, 4: Guide rod, 6: Spindle, 7: Spindle head, 15: Guide bush, 16: 1st tool post, 22: 2nd tool post, 40: Chips and Cutting oil receiving box, 42: Chip receiving basket, 43: Strainer, 44: Cutting oil extraction pipe.

Claims (1)

(57) [Claims] 1. A bed placed on the floor, a headstock provided on the bed, rotatably supporting a main spindle, and sliding in the direction of the centerline of the main spindle, and a column provided in front of the headstock. A guide bush that is held by this column and is provided on the center line of the spindle, a tool post that is provided on the front side of the column and that slides in a direction orthogonal to the center line of the spindle, and the workpiece held by the spindle. In an automatic lathe in which an object penetrates the guide bush and projects forward, and the workpiece approaches the mouth of the protruding guide bush and has the processing position of the workpiece, the front end portion above the bed is A chute provided overhanging forward, below the machining position at the front end of the bed, up to almost immediately below the position, and a part of the upper opening inserted under the chute, and Bed and Automatic lathe, characterized in that it comprises a stand to receive disposed the chip device.