JPS6034201A - Multi-head lathe with pluraity of cutting tools disposed in y-axis direction - Google Patents

Abstract

PURPOSE:To simplify, provide at low cost, and make easy to use a drive mechanism for shifting from one tool to another of a plurality of tools, by disposing a plurality of tools on a tool rest, which is slidable in the radial direction of the work, in the direction of the Y-axis and adapting the tool rest to be shiftable at the pitch of the distance between the tools. CONSTITUTION:In a multi-head, horizontal two-spindle lathe, a tool stand disposed in front of a main spindle is attached with a plurality of tools and has a guide portion 13a' above its tool slide 13a running in the direction perpendicular to the sliding direction of the slide 13a, namely, in the Y-axis direction. By the guide portion 13a' is slidably guided a tool rest 22 with holders 21, 21 holding tools 14. By such arrangement, the tool rest 22 is made slidable in the Y-axis direction and selection of either one of the two tools 14, 14 can be made possible. Thus, the mechanism for shifting from one to another of a plurality of tools can be made simple, provided at low cost, and made easy to use.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a horizontal two-axis multi-head lathe in which two main spindles are arranged parallel to each other in the same horizontal plane and movable in the axial direction.

Traditionally, regardless of whether it is a single-spindle lathe, a multi-spindle lathe, or a multi-head lathe, the typical tool rest type for lathes is a turret type, a turret with blades arranged radially around the main shaft, or a turret with multiple tools arranged in a straight line in the radial direction. A type in which cutters are arranged is known as a known technique.

In implementing a movable spindle type lathe as a multi-head lathe with two horizontal axes, the structure of the blade drive 1111 becomes extremely complicated and expensive depending on the type of turret according to the prior art as described above. This invention has been devised to solve these drawbacks, and the invention of the present application simplifies the drive mechanism of the cutter and provides a multi-head lathe that is inexpensive and easy to use. This is what we are trying to provide.

Hereinafter, features of one embodiment of the present application will be explained with reference to drawings of embodiments of the present application.

FIG. 1 is an overall front view of an embodiment of a horizontal two-axis multi-head lathe according to the present invention, and FIG. 2 is an overall plan view of the same embodiment.

A sliding base 2 having two parallel guide surfaces is fixed on the base 1, and the main shaft axes 3, 3 are mounted on the guide surfaces on the sliding base 2 in the same horizontal plane. Two separate headstocks 4.4 are arranged which are slidable in the direction. Main shaft 3
．． 3 is rotationally driven by a drive motor 5 and transmits rotational force to a workpiece H gripped by a collet (not shown), and the headstocks 4, 4 are each driven by individually provided servo motors 6. It is configured to be slid axially via a screw 7.7.

On the other hand, a tool stand 8 provided in front of the main shaft 3.3
．． A plurality of cutting tools are attached to the tool stand 8, and the tool rest is driven in the radial direction of the workpiece by the rotational force of a servo motor 9.9 attached to the tool stand 8.

Next, FIG. 3 is a front view of the tool stand 8 according to the embodiment of the present application, and FIG. 4 is a rear view thereof.

In the embodiment, the tool stands are provided as separate tool stands 8, 8 corresponding to the spindles 3, 3. A slider 11.11 is provided in each tool stand so that it can be slid at a constant angle with respect to the horizontal plane by means of a guide member 10, and the main shaft is driven by a servo motor 9.9 via a feed screw 12.12. Feed controlled in radial direction.

On the front side of the tool stands 8, 8, which sandwich the frames, there are two sets of tool slides 13a, 13, which can slide in the same direction, corresponding to the sliders 11, 11, respectively.
b, 13c, and 13d are provided, and their feeding is controlled by sliders 11.11 as described later.

Tool slides 13a, 13b, 13c,
Each of the blades 13d has a plurality of blades 14 in the Y-axis direction perpendicular to the X-axis direction that slides toward the main axis of the tool slide.
are arranged.

In the figure, 15.15 is a guide bushing mechanism that supports the workpiece, and 16.16 is a driving gear box.

Figure 5 shows a tool slide 13a with two bits attached.
FIG. 6 is a detailed diagram of the embodiment of FIG.
Figure 7 is a cross-sectional view taken along the cross-sectional lines ■ to ■. For convenience, the following explanation will be made using FIGS. 5 to 7 at the same time, and since the other tool slides 13b to 13d have exactly the same configuration, their explanation will be omitted.

The tool slide 13a can slide on a sliding base 11 fixed to the tool stand 8, and a bracket 19 fixed to the tool slide 13a with bolts 18 is provided in a window 17' provided in the sliding base 11. is located and slider 1
The bin 20 attached to the bracket 1 is in contact with the L-shaped portion at the front of the bracket 19. In this way, the tool slide 13a
It is controlled by the Get slider 11.

On the other hand, the upper part of the tool slide 13a has a guide part 13a° in a direction perpendicular to the sliding direction of the tool slide 13a, that is, in the Y-axis direction, and a holder 21 with the cutter 14 attached to the guide part 13a°. A tool rest 22 to which .21 is fixed is slidably guided.

5- A piston rod 24 is fitted into the cylinder chamber 23 provided in the tool slide 13a, and both ends of the piston rod 24 are connected to locking plates 25, 25 fixed to the tool rest by positioning pins 26 and 26. It is locked. Hydraulic fitting 2 attached to the rear end of the tool slide 13a
The pressure generated by a hydraulic source (not shown) is transmitted to 7.
It reaches the cylinder chamber through an oil hole (not shown) provided in the tool slide 13a. This configuration allows the tool rest 22 to move in the Y-axis direction, thereby making it possible to select one of the two blades 14°14.

Note that 27 in the figure is a spring for retracting the tool slide 13a in a direction opposite to the workpiece W.

The configuration of the present invention has been described above, and this will be compared in relation to the prior art.

First, in a multi-head lathe like the one to which this application relates, the distance between the main spindles 3.3 must be as small as possible because the size of the entire machine is limited. The number of blades is limited, and realistically only three to four blades can be arranged on one main shaft. Furthermore, even if these are arranged, the configuration for driving them must be complicated and large.

Next, if a turret type device is adopted, it is possible to make it as large as the present invention, but the turret device itself is quite complicated and expensive, which reduces the manufacturing cost of the lathe. It doesn't reach that point.

Alternatively, if a type in which the cutters are arranged in the X-axis direction is adopted, the cutters must be arranged in a plane that includes the spindle axis so as to face the spindle, and the workpiece moves gradually forward. It is extremely unsuitable for use as a lathe.

Compared to these, the present invention uses a simple configuration to arrange a plurality of blades in the Y-axis direction so that they can be selected, so only one set of drive means for controlling these in the radial direction is required for each main shaft. The configuration of the lathe itself is extremely simplified. In the embodiment of the present application, the number of blades that can be installed on each tool post is two, but if the piston-cylinder mechanism of the tool slide 13a is combined with tools with different stroke amounts, even more blades can be installed. It is now possible to increase the number of cutlery by simple means.

In addition, these configurations allow the sliders ii and il to move forward and backward at a certain acute angle with respect to the horizontal plane, and the effect of improving the chip discharge condition and the operability is also exhibited.

As described above, the present application has two main shafts that are parallel in the same horizontal plane and movable in the axial direction, and two sliders are provided corresponding to each axis on the plane of the tool stand perpendicular to the main shaft axis. , the two sliders are configured to be able to freely slide in the radial direction at an acute angle with respect to a horizontal plane, and to be driven forward and backward relative to the main shaft by a servo motor,
At least one tool slide, which is slidable in the same direction as the two sliders, corresponds to each of the two sliders.
and each tool slide is controlled by the two sliders, and the tool slide is provided with a tool rest movable by means such as a hydraulic cylinder in the Y-axis direction perpendicular to the advance and retreat direction of the slider, Since the turret is configured so that multiple cutters can be attached, it is possible to provide an extremely inexpensive, simple and compact multi-head lathe, which has many industrial advantages. It is something that produces

[Brief explanation of the drawing]

Figure 1 is an overall front view of the multi-head lathe according to the embodiment of the present application, Figure 2 is an overall plan view of the embodiment, Figure 3 is a front view of the tool stand according to the embodiment of the application, and Figure 4 is a rear view of the tool stand. , Figure 5 is a detailed view of the tool slide, Figure 6 is a cross-sectional view along the cross-sectional line ■~■ in Figure 5, and Figure 7 is a cross-sectional view along the cross-sectional line ■~■.
FIG. d...Work, 1...Base, 2...Sliding base,
3... Main spindle, 4... Headstock, 8... Tool stand, 9... Servo motor, 11... Slider, 13
a, 13b, 13c, 13d =--Tool slide, 13a°...Guiding part, 14...Cuttle,
11...Sliding stand, 17°...Window, 19...Bracket, 21...Holder, 22...Turret rest, 9-23...Cylinder chamber, 24...Piston rod, 2
5... Inventor of the locking plate Same applicant for patent registration as the applicant for patent registration Takayuki Nomura 10- Written amendment to the procedure of Figure 5 of the Encyclopedia (voluntary) Commissioner of the Japan Patent Office Kazuo Wakasugi 1, Indication of the case 1982 Year: Patent Application No. 143891 2, Name of the invention: Multi-head lathe with multiple cutters arranged in the Y-axis direction 3, Relationship to the case of the person making the amendment Patent applicant address: 437 Tanasawa, Okutama-cho, Nishitama-gun, Tokyo Name
Takayuki Yoshiuchi 4, Agent 8107 Telephone: 03-405-7616 The "Title of the Invention" column of the application, all columns 6 of the specification, contents of amendments, detailed description 1, name of the invention. Claims (11) A lathe having a tool stand disposed on a plane orthogonal to the main spindle axis, and a tool rest that is movable in a radial direction with respect to the main shaft on the surface of the tool stand, the tool rest: A lathe having a turret with a plurality of cutters arranged in the Y direction, which is perpendicular to the radial direction, and movable in the Y direction in units of cutter spacing. (2) Turret is disposed so as to be movable in the Y direction for each blade interval on a tool slide that can move forward and backward in the radial direction on the surface of the tool stand. A lathe that has a tool rest with an array of cutters. (3) Two tool rests are provided facing each other with the main shaft in between, and each tool rest is placed on its corresponding tool slide. A lathe having a turret in which a plurality of cutters are arranged as set forth in claim (2). (4) The tool slide is connected to a slider that can move forward and backward in the radial direction on the back of the tool stand. A lathe having a turret in which a plurality of cutters are arranged according to claim (2) or (3). (5) The main spindle is arranged in multiple stages parallel to each other, A lathe having a turret in which a plurality of cutters are arranged as set forth in claim (1), wherein the turret is provided individually corresponding to each main spindle. (6) The radial direction is relative to the horizontal plane. Claim No. 1 (1,
A lathe having a tool rest in which a plurality of cutters according to any one of Item 1, Item (2), and Item (4) are arranged. 3. Detailed Description of the Invention The present invention relates to a lathe having a tool rest in which a plurality of cutters are arranged. Conventionally, the tool rests of general lathes, whether they are axle-axis lathes, multi-spindle lathes, or multi-head lathes, are turret types, tools with tools arranged radially around the main shaft, or tools with multiple tools arranged in a straight line in the radial direction. A type in which these are arranged is known as a well-known technique. However, depending on the conventional tool post type mentioned above, the configuration of the drive mechanism for converting the tool is extremely complicated.
This method has drawbacks such as being expensive and making the device large. The present invention has been proposed to solve these drawbacks, and its purpose is to simplify the conversion drive mechanism for multiple cutters and provide an inexpensive and easy-to-use lathe. The present invention provides a lathe equipped with a tool stand disposed on a plane orthogonal to the spindle axis, and a tool rest that is movable radially forward and backward with respect to the main spindle on the surface of the tool stand, the tool rest being perpendicular to the radial direction. It is constructed by arranging and holding a plurality of blades in the Y direction and movable in the Y direction in units of blade intervals. Hereinafter, features of the present invention will be explained with reference to drawings of embodiments of the present invention. The present invention is applicable not only to single-spindle lathes but also to arbitrary multi-spindle lathes, but the embodiment shown below is for a horizontal two-spindle multi-head lathe, and FIG. 1 is an overall front view thereof. , FIG. 2 is an overall plan view of the same embodiment. A sliding base 2 having two parallel guide surfaces is fixedly installed on the heist F, and the main shafts 3 and 3 are mounted on the guide surfaces on the sliding base 2 in the same horizontal plane in the direction of the main shaft axis. Two separate slidable headstocks 4, 4 are arranged. Main shaft 3.
3 is rotationally driven by a drive motor 5, and transmits rotational force to a workpiece W gripped by a collet (not shown), and the headstock 4.4 is driven by an individually provided servo motor 6.6. It is configured to be slid in the axial direction via feed screws 7, 7. On the other hand, a tool stand 8 provided in front of the main shaft 3.3
A plurality of cutlery tools are attached to the tool stand 8.
Due to the rotational force of the servo motors 9, 9 attached to the
A tool post is provided that is driven in the radial direction of the workpiece. Next, FIG. 3 is a front view of the tool stand 8 according to the embodiment of the present invention, and FIG. 4 is a rear view thereof. In the exemplary embodiment, the tool stand is provided as a separate tool stand 8.8 corresponding to the main shaft 3.3. A slider 11.11 is provided in each tool stand so that it can be slid at a constant angle with respect to the horizontal plane by means of a guide member 10, and is moved by servo motors 9, 9 via a feed dog 12.12. The feed is controlled in the radial direction of the spindle. By providing the above-mentioned angle, it becomes possible to narrow the distance between the main shafts and to easily remove chips. On the front side of the tool stand 8.8 across the frame, there are two sets of tool slides 13a+13b that can slide in the same direction corresponding to each of the sliders 11.11.
, 13c and 13d are provided, and their feeding is controlled by sliders 11.11, as will be described later. Each of the tool slides 13a, 13b, 13c, Ltd. has a plurality of blades 14 arranged in the Y-axis direction perpendicular to the X-axis direction that slides toward the main axis of the tool slide. In the figure, 15.15 is a guide bushing mechanism that supports the workpiece W, and 16.16 is a driving gear box. Figure 5 shows tool slide 13 with two bits attached.
Fig. 6 is a detailed view of the embodiment of Fig. 5.
7 is a cross-sectional view taken along the cross-sectional lines ■ to ■. For convenience, the following explanation will be made using FIGS. 5 to 7 at the same time, and since the other tool slides 13b to 13d have exactly the same configuration, their explanation will be omitted. The tool slide 13a can slide on a sliding base 17 fixed to the tool stand 8, and a bracket 19 fixed to the tool slide 13a with bolts 18 is provided in a window 17'' provided on the sliding base 17. is located and slider 1
The pin 20 attached to 1 is attached to I on the front of the bracket 19.
It is in contact with the figure 7 part. Thus tool slide 1
3a is controlled in the radial direction by a slider 11. On the other hand, the upper part of the tool slide 13a has a guide part 138° in a direction perpendicular to the sliding direction of the tool slide 13a, that is, in the Y-axis direction, and the guide part 13a has a holder 2L with a cutter 14 attached thereto. A tool rest 22 to which a tool holder 21 is fixed is slidably guided. A piston rod 24 is fitted into the cylinder chamber 23 provided in the tool slide 13a, and both ends of the piston rod 24 are locked to locking plates 25, 25 fixed to the tool rest by positioning pins 26 and 26. has been done. Pressure generated by a hydraulic power source (not shown) is transmitted to a hydraulic fitting 27 attached to the rear end of the tool slide 13a, and reaches the cylinder chamber through an oil reservoir (not shown) provided in the tool slide 13a. With such a configuration, the tool rest 22 can be moved in the Y-axis direction, thereby making it possible to select one of the two blades 14, 14. In this way, the tool rest 22 can be moved forward and backward in the radial direction by the slider 11 via the tool slide 13a, and on the other hand, the tool slide 13 is moved by the drive of the piston rod 24.
The cutter can be selected by moving in the Y-axis direction on a. Note that 27 in the figure is a spring for retracting the tool slide 13a in a direction opposite to the workpiece W. The configuration of the present invention has been described above, and this will be compared in relation to the prior art. First, in a multi-head lathe to which the present invention relates, the distance between the spindles 3.3 must be as small as possible because the size of the entire machine is limited. The number of blades is limited, and realistically only three to four blades can be arranged on one main shaft. Also,
Even if these were arranged, the configuration for driving them would have to be complicated and large. Next, if a turret type device is adopted, it is possible to make it as large as the present invention, but the turret device itself is quite complicated and expensive, which reduces the manufacturing cost of the lathe. It doesn't reach that point. Alternatively, if a type in which the cutters are arranged in the X-axis direction is adopted, the cutters must be arranged in a plane that includes the spindle axis so as to face the spindle, and the workpiece moves gradually forward. It is extremely unsuitable for use as a lathe. Compared to these, the present invention uses a simple configuration to arrange a plurality of blades in the Y-axis direction so that they can be selected, so the drive means for controlling these in the radial direction is
It is only necessary to assemble them one by one, and the configuration of the lathe itself is extremely simplified. In the embodiment of the present invention, the number of blades that can be attached to each tool rest is two, but the tool slide
If the piston/cylinder mechanism 3a is combined with one having a different stroke amount, it becomes possible to attach a larger number of blades, and the number of blades can be increased by simple means. Further, the number of tool rests for one main spindle and the number of main spindles themselves are not limited to two as in this embodiment, but can easily be increased to a single number or a plurality of three or more. Furthermore, these configurations enable the sliders 11, 11 to move forward and backward at a certain acute angle with respect to the horizontal plane, and the effect of improving the chip discharge condition and the operability is also exhibited. As described above, the present invention is characterized in that a plurality of blades are arranged and held in the Y-axis direction on a radially movable tool rest, and the tool rest is movable in units of intervals between the tools. This configuration makes it possible to provide a multi-head lathe that is extremely inexpensive, simple, and compact, and provides many industrial advantages. 4. Brief description of the drawings Fig. 1 is an overall front view of a multi-head lathe according to an embodiment of the present invention, Fig. 2 is an overall plan view of the embodiment, and Fig. 3 is a front view of a tool stand according to the embodiment. Fig. 4 is a rear view of the tool stand shown in Fig. 3, Fig. 5 is a detailed view of the tool slide in Fig. 3, Fig. 6 is a sectional view taken along section line 1-I in Fig. 5, and Fig. 7 is a cross-sectional view taken along cross-sectional lines ■ to ■. 0 W......Work...Heath 2...Sliding base 3...Main shaft 4... ...... Headstock 8... Tool stand 9... Servo motor 11... Slider 13a, 13b, 13c, 13d. =--Tool slide 13a...Guiding section 14...Cutter 17...Sliding stand 17゛...Window 19 ......Bracket 21...Holder 22...Turret rest 23...Cylinder chamber 24... ...Piston Rondo 25...
...Lock plate 1

Claims (1)

[Claims] It has two main shafts that are parallel and movable in the axial direction in the same horizontal plane, and two sliders are provided corresponding to the respective main shafts on the plane of the tool stand perpendicular to the main shaft axis, and the two sliders are arranged in the horizontal plane. The tool slide is configured to be movable in the radial direction at an acute angle with respect to the main shaft, and is driven forward and backward with respect to the main shaft by a servo motor, and is movable in the same direction as the two sliders. At least one slider is provided corresponding to each tool slider, and each tool slide is controlled by the two sliders. 1. A horizontal two-axis multi-head lathe, characterized in that a horizontal two-axis multi-head lathe is provided with a flexible tool rest, and a plurality of cutlers can be attached to the tool rest.