JP5332153B2 - Machine tool with loader - Google Patents

Description

  The present invention relates to a machine tool with a loader provided with a machine tool main body such as a lathe and a loader for supplying and discharging a workpiece to and from the machine tool main body.

There is a machine tool with a loader provided with a loader on the upper side of the machine tool main body, and an operator standing in front of the machine tool main body and performing setup work on the processing equipment of the machine tool main body (for example, Patent Document 1). This type of machine tool with a loader includes a partition plate (a “secondary cover” in Patent Document 1) that divides a machining area of a machine tool main body and a loader traveling area that is located above and travels by the loader, and loader traveling A loader fence (“loader cover” in Patent Document 1) that partitions the area and the worker space in front of the area is provided. The partition plate is for preventing the chips from scattering outside the processing area, and the whole or a part is opened when the loader supplies and discharges workpieces to the processing equipment. . The loader fence is for preventing interference between the loader and the worker, and can be opened when the worker performs setup work on the processing equipment. Conventional loader fences generally have a structure that slides in the left-right direction together with the partition plate, opens upward, or doubles.
JP 2002-370136 A Japanese Utility Model Publication No. 62-198032 Utility Model Registration No. 2531835

  However, when the loader fence is configured to open and close together with the partition plate, there are the following problems. For example, if the machine tool body is a two-axis lathe with two processing parts arranged on the left and right, and when performing setup work on one of the processing parts, when the partition plate of the processing part to be set up is opened, the loader fence It will open. When the loader fence is opened, the loader is exposed to the worker space side and is dangerous, so the loader cannot be moved. For this reason, even when a setup operation is performed on one of the processing parts, both the processing parts must be stopped together.

The lathe setup work is mainly tool change of the tool post and chuck change of the spindle. In the case of a lathe where the tool post is on the front side and the spindle is on the rear side (for example, Patent Document 2), the tool change of the tool post does not interfere with the loader due to the positional relationship between the loader and the tool post. It can be carried out. Therefore, if the loader fence can be provided so as to partition the loader travel area and the worker space and to form an opening for performing a tool change operation between the working region and the worker space, Processing can be continued in other processing parts even when the tool of the processing part is changed. Since the frequency of tool replacement is higher than that of chuck replacement, if the above can be performed, the stop time of the processing unit can be reduced and the production efficiency can be improved.
In addition, a small window is provided on the door (fence) that covers the processing part, and depending on the contents of the setup work of the processing part, a small window is opened and the setup work is performed, and a door is opened and the setup work is performed. There is a machine tool to be selected (Patent Document 3). However, the purpose of Patent Document 3 is to reduce the number of times of opening and closing the door, which is heavy.

An object of the present invention is to provide a machine tool with a loader capable of changing the degree of opening of a loader fence according to the contents of the setup work so that the setup work can be performed without stopping the processing portion as much as possible.
Another object of the present invention is to easily open and close the loader fence and to simplify the configuration of the loader fence.
Still another object of the present invention is to provide a specific form of a machine tool with a loader in which the improvement of production efficiency is remarkably exhibited by applying the present invention.

A machine tool with a loader according to the present invention includes a machine tool main body that processes a workpiece by a processing section including a plurality of processing devices arranged side by side, and is installed on the upper side of the machine tool main body. And a loader that supplies and discharges, and an operator stands in front of the machine tool main body and performs setup work on the processing portion. A machine body cover that covers a machining area in which the machining unit is provided and a loader travel area in which the loader travels , an open / close-type partition plate that partitions the process area and the travel area, and a part of the machine cover, whole to the rest of the airframe cover and a loader fence separating the worker space of the front side and the front Symbol loader running region is configured movable. The loader fence maintains a state in which the loader travel region and the worker space are partitioned from a closed state that partitions the loader travel region and the worker space and partitions the processing region and the worker space. In addition, a first opening is formed between the processing area and the worker space for performing a setup operation on the processing equipment on the front side of the processing unit by an operator located in the worker space. An open state, the loader travel area and the worker space are not partitioned, and a worker who is located in the worker space performs a setup operation on the processing equipment on the rear side of the processing unit through the loader travel area. and a second open state capable of opening and closing the partition plate to the opening that allows, Ru der openably at least two stages. That is, it can be freely opened in at least two stages.
For example, there is a loader running region above the working area. The machining area and the loader travel area are partitioned by a partition plate. In the first open state in which the vertical cover portion is moved rearward, the loader traveling area in the closed state is reduced, and the reduced loader traveling area is used as the worker space. The increased worker space is partitioned from the processing region by a partition plate.

  With this configuration, when performing setup work on the front processing machine, the loader fence is in the first open state, and setup is performed through an opening formed between the processing area and the worker space. Do work. At this time, since the loader travel area and the worker space are partitioned by the loader fence, it is safe to operate the loader. Moreover, when performing a setup operation | work with respect to the processing apparatus of the rear side, a loader fence is made into a 2nd open state, and a setup operation is performed over a loader traveling area. At this time, the operation of the loader is stopped.

Before SL loader fence has a horizontal cover portion for covering an upper portion of the loader drive region in said closed state, and a vertical cover portion for covering the front of the loader travel region, the first open state, the closed state It shall be the state of moving the vertical cover portion rearward from.
According to the configuration of this, only moving the vertical cover portion which is a part of the loader fence, since it is switched from the closed state to the first open state, is simple opening and closing of the loader fence, and the loader fences The configuration can be simplified.

In the present invention, the machine tool main body is provided with a plurality of the processing parts arranged side by side on the left and right, a front side processing equipment in the plurality of processing equipments of each processing part is a tool post, and a rear side processing equipment is a main shaft. It is preferable that the same number of the partition plates and loader fences as the processing parts are provided corresponding to each processing part.
When exchanging tools for the tool post of a certain processing unit, the loader fence corresponding to the processing unit is in the first open state, and the loader fence corresponding to the other processing unit is kept closed. . Tool exchange work is performed on the tool rest to be tool exchanged through the opening formed when the loader fence is in the first open state. Since the loader travel area and the worker space are partitioned by the loader fences, the loader can be moved safely. Therefore, the other processing parts can continue processing as usual.

A machine tool with a loader according to the present invention includes a machine tool main body that processes a workpiece by a processing section including a plurality of processing devices arranged side by side, and is installed on the upper side of the machine tool main body. A loader that supplies and discharges the machine tool, and an operator stands in front of the machine tool main body and performs a setup operation on the machining unit, and a machining region provided with the machining unit and the loader The machine body cover that covers the loader traveling area where the vehicle travels, the openable and closable partition plate that partitions the processing area and the traveling area, and a part of the machine body cover that is entirely movable relative to other parts of the machine body cover has the configuration has been pre-Symbol loader running region and loader fence separating the worker space of the front side, the loader fence, partition and said worker space and the loader travel area, and From the closed state that partitions the processing region and the worker space, the state that partitions the loader travel region and the worker space is maintained, and the worker space is provided between the processing region and the worker space. A first open state in which an opening for performing a setup operation on a processing device on the front side of the processing unit is formed by a worker positioned without partitioning the loader travel region and the worker space; and A second opening capable of opening and closing the partition plate by an operator located in the worker space up to an opening degree at which a setup operation can be performed on the processing equipment on the rear side of the processing unit over the loader travel area. in the state, since it is free to open in at least two stages, by changing the degree of opening of the loader fence in accordance with the contents of the setup operation, by performing the setup operation without stopping the possible processing section, raw It is possible to improve the efficiency.

The front Symbol loader fence has a horizontal cover portion for covering an upper portion of the loader drive region in said closed state, and a vertical cover portion for covering the front of the loader travel region, the first open state, the Since the vertical cover portion is moved rearward from the closed state , the loader fence can be easily opened and closed, and the configuration of the loader fence can be simplified.

  The machine tool main body is a multi-axis lathe in which a plurality of the processing parts are provided side by side, and a plurality of processing devices of each processing part are a headstock and a tool post, and the partition is formed corresponding to each processing part. If the number of plates and loader fences is the same as the number of processed parts, the production efficiency can be particularly improved.

An embodiment of the present invention will be described with reference to FIGS. 1 is a perspective view of a machine tool with a loader according to the present invention, FIG. 2 is a front view with a part thereof omitted, and FIG. 3 is a cutaway side view thereof. The machine tool with a loader includes a machine tool main body 1 and a loader 2 that supplies and discharges workpieces to the machine tool main body 1. FIG. 4 is a plan view of the machine tool main body 1.
The machine tool body 1 is a two-axis lathe in which two processing parts 3A and 3B are provided in parallel in the left and right directions. The machine tool main body 1 has a bed complex 4 composed of a right bed 4A and a left bed 4B, and a headstock 6 that supports a main shaft 5 on the left and right beds 4A and 4B is respectively in the front-rear direction (Z-axis direction). ) Can be moved forward and backward. The main shaft 5 faces in the front-rear direction (Z-axis direction), and a main shaft chuck 5a is provided at the front end thereof. A tool post 7 is provided in front of the main shaft 5. The main shaft 5 and the tool post 7 are processing devices, and sets of the main shaft 5 and the tool post 7 arranged in the front and rear form the processing parts 3A and 3B, respectively.

  Each of the beds 4A and 4B has a box shape with a structure including left and right side plate portions 4a and a rear base portion 4b and a front base portion 4c provided between the left and right side plate portions 4a. A space 8 between the rear base part 4b and the front base part 4c is a discharge space for chips generated during turning. In addition, a pair of left and right leg portions 4d are provided at the lower portion of the bed, which is a portion below the rear base portion 4b and the front base portion 4c. The legs 4d on the adjacent sides of each bed 4A, 4B are shared. A space between the pair of left and right legs 4d is a coolant tank arrangement space.

  The main shaft 5 which is a rear processing device is rotatably supported by the main shaft 6 and is rotated by a main shaft motor (not shown) provided inside the main shaft 6. The headstock 6 is installed on the rear base parts 4b of the beds 4A and 4B so as to be able to advance and retreat in the front-rear direction, and is moved back and forth by a front-rear moving mechanism (not shown) provided below the headstock 6. The headstock guide means 9 for guiding the headstock 6 in the front-rear direction is provided with a pair of front-rear guide rails 9 a extending in the front-rear direction on both the left and right sides of the headstock 6, and protruding on both the left and right sides of the headstock 6. The guided body 9b is movable forward and backward on the front and rear guide rail 9a. The guided body 9b is composed of, for example, a linear motion rolling bearing.

  A tool post 7 which is a front processing device includes a tool 10, a tool holder 11 that supports the tool 10, and a slide member 12 that supports the tool holder 11. The slide member 12 is provided on the beds 4A and 4B so as to be slidable in the left-right direction via the slide member guide means 13. The slide member guide means 13 includes a pair of front and rear slide guide rails 13a installed horizontally on the front platform 4d of the beds 4A and 4B, and a guided body 13b attached to the lower surface of the slide member 12. . The guided body 13b is composed of, for example, a linear motion rolling bearing.

  As slide means for sliding the slide member 12 to the left and right, a screw shaft 14, a nut 15, a slide motor 16, and the like are provided. The screw shaft 14 is rotatably supported between the pair of slide guide rails 13a. The nut 15 is attached to the lower surface of the slide member 12 and is screwed to the screw shaft 14. The slide motor 16 is provided below the screw shaft 14, and a transmission chain 17 is hung on a claw wheel 16 a attached to the motor shaft and a claw wheel 14 a attached to the screw shaft 14. When the slide motor 16 is rotated, the screw shaft 14 rotates and the nut 15 moves along the screw shaft 14. Thereby, the slide member 12 slides left and right.

  A coolant tank 20 is attached to the lower part of the beds A and 4B4 so as to float from the floor surface F. The coolant tank 20 extends from the front end to the rear end of the beds 4A and 4B, and further protrudes behind the beds 4A and 4B. A circulation motor 21 that circulates the internal coolant is provided at the rear end of the coolant tank 20. The upper surface portion of the coolant tank 20 facing the space 8 where chips are discharged is open.

  A tool conveyor 22 is provided inside the coolant tank 20. The tool conveyor 22 is configured such that an endless conveyor rotating body 23 made of a net or a belt with holes or the like that passes oil and prevents the passage of chips can be rotated in a conveyor case 24 via a guide 25 such as a roller. It is provided. The conveyor rotating body 23 is rotationally driven by a conveyor driving motor 26 provided at the rear end of the tool conveyor 22. As for the conveyor case 24 of the tool conveyor 22, the upper surface is open | released in the part corresponding to the said space 8 of bed 4A, 4B. The tool conveyor 22 has an inclined portion 22a in which a portion protruding rearward from the beds 4A and 4B is inclined upward, and discharges chips of the conveyor rotating body 23 from the upper end of the inclined portion 22a.

  The loader 2 includes an erection rail 30 installed in the left-right direction above the machine tool body 1, a traveling body 31 that travels along the erection rail 30, a front / rear moving table 32 that is mounted on the traveling body 31, The telescopic support 33 is provided on the front / rear moving table 32 and can be expanded and contracted in two steps in the vertical direction. The loader head 34 is supported by the lower end of the telescopic support 33. The loader head 34 has a turntable 36 to which two loader chucks 35 for gripping a workpiece are attached, and the turntable 36 rotates around a rotation center 37 that forms an angle of 45 degrees with respect to the horizontal. Both loader chucks 35 are switched between a downward position and a horizontal position. By operating the traveling body 31, the front / rear moving table 32, and the telescopic support body 33, the loader chuck 35, together with the loader head 34, moves to the left and right (X axis direction), front and rear (Z axis direction), and up and down (Y axis direction). ) And move up and down.

  A work reversing machine 38 that reverses the direction of the work is provided on the front surface of the installation rail 30. The work reversing machine 38 has two reversing chucks 39 that can be opposed to each other, and the first reversing chuck 39 grasps one end of the work passed from the loader 2 and is opposite to the work. The end of the side is held by the second reversing chuck 39, and the work is returned from the second reversing chuck 39 to the loader 2 so that the direction of the work is reversed.

  Opening and closing type partition plates 40A and 40B are provided at boundaries between the processing areas S1A and S1B where the processing parts 3A and 3B are provided and the loader traveling area S2 above the processing areas S1A and 3B. The loader travel area S2 is an area where the loader 2 travels, more precisely, an area where the portion from the travel body 31 to the loader head 34 of the loader 2 travels left and right, and is a space surrounded by a body cover 50 described later. That is. As shown in FIG. 3, the processing areas S1A, S1B and the traveling area S2 are usually partitioned by the partition plates 40A, 40B at the front position P1. At this time, the partition plates 40 </ b> A and 40 </ b> B are inclined obliquely downward. The inclination angle θ (FIG. 6A) is 45 ° or less, preferably about 10 to 20 °.

  As shown in FIG. 5, the partition plates 40 </ b> A and 40 </ b> B have an opening 41 into which the loader head 34 is inserted when supplying and discharging the workpiece to and from the processing parts 3 </ b> A and 3 </ b> B. A shutter 42 that opens and closes is attached. The figure shows a state in which the shutter 42 is opened approximately half.

A support mechanism 70 for the partition plates 40A and 40B is shown in FIG. The support mechanism 70 includes a front / rear guide mechanism 71 that guides the partition plate 40A (40B) in the front-rear direction and a posture change mechanism 72 that changes the posture of the partition plate 40A (40B).
In the partition plate 40A (40B), a substantially triangular side plate 40b extends downward from the left and right ends of the partition plate main body 40a in a side view, and a slider 44 is rotated via a rotary damper 43 at the lower rear end of the side plate 40b. It is mounted movably. The rotary damper 43 gives a constant torque to the slider 44. The slider 44 has a U-shaped cross section that opens downward, and slidably straddles the guide rail 45 in the front-rear direction supported by the side plate portions 4a of the beds 4A and 4B. The rotary guide 43, the slider 44, and the guide rail 45 constitute the front / rear guide mechanism 71.
Further, in the vicinity of the rotary damper 43, a cam follower 46 formed of a pin that protrudes horizontally from the side plate 40b is provided. The cam follower 46 is slidably fitted in a cam groove 47a of a cam groove forming member 47 provided on the side plate 4a of the beds 4A and 4B. The cam groove 47a includes a front horizontal portion 47aa with a short front and rear length, a rearwardly inclined portion 47ab that follows the rear end of the front horizontal portion 47aa, and a rear horizontal portion 47ac with a long front and rear that follows the rear end of the inclined portion 47ab. It consists of. The cam follower 46 and the cam groove forming member 47 constitute the posture changing mechanism 72.
A handle 48 for opening / closing operation is attached to the front end portion of the upper surface of the partition plate main body 40a. In order to avoid interference with a loader fence 51A (51B), which will be described later, the handle 48 can be immersed in the partition plate body 40a when not in use, as shown by a two-dot chain line in FIG. .

When opening the partition plate 40A (40B) at the front position P1 (FIG. 6A), the operator holds the handle 48 and pushes the partition plate 40A (40B) backward. Then, the slider 44 is guided by the guide rail 45 and the entire partition plate 40A (40B) moves rearward, and the cam follower 46 moves from the front horizontal portion 47aa of the cam groove 47a to the inclined portion 47ab, whereby the partition plate 40A. The front side of (40B) is lifted. At the intermediate position P2 (FIG. 6B) where the cam follower 46 is located at the rear end of the cam groove inclined portion 47ab, the partition plate 40A (40B) is horizontal. Further, if the partition plate 40A (40B) is pushed rearward, the cam follower 46 moves in the rear horizontal portion 47ac of the cam groove 47a, while the partition plate 40A (40B) remains horizontal and the rear position P3 (FIG. 6C). ). The partition plate 40A (40B) at the rear position P3 is stored in a vertically narrow space 49 sandwiched between the headstock 6 of the machine tool body 1 and the installation rail 30 of the loader 2.
In the opening operation of the partition plate 40A (40B), the partition plate 40A (40B) is guided in the front-rear direction by the front-rear guide mechanism portion 71, and the front position P1 is lowered forward by the action of the posture changing mechanism portion 72 interlocked therewith. By changing the posture of the partition plate 40A (40B) so as to be inclined and to be in a horizontal posture at the rear position P2, it can be accurately and smoothly performed. Since the partition plate 40A (40B) can be opened and closed by one operation of moving the partition plate 40A (40B) in the front-rear direction, the opening / closing operation is simple.

  When closing the partition plate 40A (40B), an operation reverse to the above may be performed. Since a constant torque is applied to the slider 44 by the rotary damper 43, when the partition plate 40A (40B) moves from the intermediate position P2 to the front position P1, the partition plate 40A (40B) rapidly lowers by its own weight. It is prevented from falling down.

  A machine body cover 50 that covers the periphery of the loader 2 is provided on the upper side of the bed 4 of the machine tool main body 1. The machine body cover 50 has a box shape including an upper surface cover part 50a, a front cover part 50b, left and right side cover parts 50c, and a rear cover part (not shown). The lower part is open. Left and right width portions corresponding to the processing portions 3A and 3B of the machine tool body 1 from the front cover portion 50b to the front portion of the upper surface cover portion 50a in the machine body cover 50 are loadable fences 51A and 51B that can be opened and closed. Yes.

  FIG. 7 is a perspective view of a fence frame 52 which is a part of the framework of the machine body cover 50 and a loader fence 51A (51B) attached thereto. FIGS. 7A to 7C are views of the loader fence 51A (51B). Different states are shown. The loader fence 51A (51B) includes a horizontal cover portion 51a that constitutes a part of the upper surface cover portion 50a of the machine body cover 50 and a vertical cover portion 51b that constitutes a part of the front cover portion 50b, and the horizontal cover portion 51a. The horizontal cover portion 51a and the vertical cover portion 51b are rotatably connected to each other by a hinge (not shown). The horizontal cover portion 51a and the vertical cover portion 51b are provided with a window 53 into which a transparent member is fitted. Similar windows 53 are provided at locations other than the loader fences 51 </ b> A and 51 </ b> B of the machine body cover 50. A handle portion 54 for opening and closing operation is formed at the lower portion of the front cover portion 50b.

  As shown in FIG. 8, a guide groove forming member 55 is provided at the lower end of the left and right front vertical portions 52 b of the fence frame 52 so as to face rearward, and a first guide groove 56 is formed on the inner surface of the guide groove forming member 55. Has been. The first guide groove 56 generally has a side surface shape that is inclined rearward and the rear end portion 56a slightly falls downward. A second guide groove 57 connected to the front end of the first guide groove 56 is formed on the inner surface from the lower end of the fence front side vertical part 52b to the front and rear center part of the fence frame horizontal part 52a. Guide rollers 58 guided along the first and second guide grooves 55 and 56 are provided at the lower ends of the left and right end surfaces of the loader fence vertical cover portion 51b.

  7A shows the closed state Q1 of the loader fence 51A (51B). In this closed state Q1, the horizontal cover portion 51a of the loader fence 51A (51B) is on the same plane as the upper surface cover portion 50a of the fuselage cover 50. The vertical cover portion 51b of the loader fence 51A (51B) is located on the same plane as the front cover portion 50b of the body cover 50. At this time, the guide roller 58 is located at the front end of the first guide groove 56. When the loader fence 51A (51B) is in the closed state Q1, as shown in FIG. 3, the loader traveling area S2 and the worker space S3 on the front side thereof are partitioned by the loader fence 51A (51B), and the processing area S1A (S1B) and worker space S3 are partitioned.

  From the closed state Q1, the guide roller 58 rolls back along the first guide groove 56 by placing the hand on the handle portion 54 and pushing the vertical cover portion 51b of the loader fence 51A (51B) backward. However, the lower end side of the vertical cover portion 51b rotates rearward, and a first open state Q2 shown in FIG. The horizontal cover portion 51a has a posture in which the front portion is slightly lifted. Switching from the closed state Q1 to the first open state Q2 only requires the vertical cover portion 51b to move rearward, so that the operation is simple. The first open state Q2 is a stable state because the guide roller 58 is fitted into the rear end portion 56a of the first guide groove 56 and the movement of the vertical cover portion 51b is restricted. When the loader fence 51A (51B) is in the first open state Q2, as shown in FIG. 9, the loader fence 51A (51B) holds the loader traveling area S2 and the worker space S3. In addition, an opening 60 is formed between the processing area S1A (S1B) and the worker space S3. In the case of this embodiment, as shown in FIG. 5, the opening 60 is formed by opening the shutter 42 of the partition plate 40A (40B) in a half-open state, but the partition plate 40A (40B) itself is opened to open the opening. The part 60 may be formed.

  From the closed state Q1, the loader fence 51A (51B) is folded while the guide roller 58 is guided along the second guide groove 57 by first lifting the vertical cover portion 51b and pushing it backward from the middle. The second open state Q3 shown in FIG. When the loader fence 51A (51B) is in the second open state Q3, as shown in FIG. 10, the opening / closing operation of the partition plate 40A (40B) is performed without partitioning the loader travel area S2 and the worker space S3. Is possible. When the loader fence 51A (51B) is in the second open state Q3 and the partition plate 40A (40B) is in the rear position P3, the worker 61 located in the worker space S3 passes the loader travel region S2 over the processing portion. Setup operations such as chuck replacement can be performed on the spindle 5 which is a processing machine on the rear side of 3A (3B).

  The front part of the machine tool body 1 is covered with a front cover 62. The front cover 62 is provided slightly forward from the front platform 4c of the beds 4A and 4B, and the space 63 between the front cover 62, the tool post 7 and the front platform 4c is a chip. It is a space for dropping. An operation panel 64 is installed on the front cover 62. The operation panel 64 is rotatable around a vertical axis 64a. For example, when the operation panel 64 is normally positioned on the front side of the right loader fence 51B and the setup work is performed on the right processing portion 3B. As shown in FIG. 1, the operation panel 64 is positioned in the center so that the worker space S3 in front of the loader fence 51B is made empty. A control panel 65 for controlling the machine tool with a loader is installed along the back surface of the bed complex 4. Even if the control panel 65 is attached to the bed complex 4 via an attachment member (not shown), it is also installed on the floor via a support base (not shown). Also good. Below the machine tool body 1 of the machine body cover 50 that extends to the left and right sides are a workpiece loading position and a workpiece unloading position. The workpiece loading table 66 is at the workpiece loading position, and the product is at the workpiece unloading position. Workpiece mounting tables (not shown) are respectively installed.

  This machine tool with a loader operates with the partition plates 40A and 40B in the forward position P1 and the loader fences 51A and 51B in the closed state Q1. During operation, the loader 2 supplies and discharges workpieces (not shown) to the processing units 3A and 3B of the machine tool main body 1. Specifically, when the traveling body 31 moves left and right, the front and rear moving base 32 moves back and forth, and the telescopic support body 33 expands and contracts, the loader head 34 moves between the work carry-in position and the processing parts 3A and 3B. The loader chuck 35 in the downward position at the position grips the workpiece on the material workpiece mounting table 66, and the loader chuck 35 in the horizontal position supplies the workpiece to the spindle 5 at the processing portions 3 </ b> A and 3 </ b> B. Further, the loader head 34 moves between the processing units 3A and 3B and the workpiece unloading position, and the loader chuck 35 in the horizontal position at the processing units 3A and 3B receives the processed product workpiece from the main shaft 5 and moves to the workpiece unloading position. The loader chuck 35 in the downward position places the product workpiece on the product workpiece mounting table. When the loader head 34 descends into the processing areas S1A and S1B, the shutters 42 of the partition plates 40A and 40B are opened in a fully opened state in conjunction with the elevation of the loader head 34. Since the loader traveling area S2 and the worker space S3 are partitioned by the loader fences 51A and 51B in the closed state Q1, the above-described operation of the loader 2 is performed, so that the worker 61 in the worker space S3 contacts the loader 2. There is no fear and it is safe.

  In the processing parts 3A and 3B, turning is performed on the workpiece supported by the main shaft 5. Specifically, the workpiece is moved in the feed direction of the tool 10 by the back-and-forth movement of the headstock 6, and the tool 10 is moved in the cutting direction by the left and right slide of the tool post 7. When machining on both sides of the workpiece in the axial direction, the workpiece reversing machine 38 reverses the direction of the workpiece. During the turning process, the shutters 42 of the partition plates 40A and 40B are closed, so that the chips do not scatter outside the processing areas S1A and S1B. Chips generated in the turning process fall on the tool conveyor 22 through the chip discharge space 8 and are carried by the tool conveyor 22 and discharged to the outside.

  The tool 10 and the spindle chuck 5a are exchanged according to changes in the type of workpiece to be machined, machining content, and the like. When exchanging the tool 10, the processing of the corresponding processing portion S1A (S1B) is stopped, and then the loader fence 51A (51B) on the processing portion S1A (S1B) side is set to the first open state Q2. Then, the shutter 42 of the partition plate 40A (40B) is set in a half-open state (FIG. 9). Thereby, the opening part 60 is formed between process area | region S1A (S1B) and worker space S3. The tool 10 is replaced by inserting a hand into the processing area S1A (S1B) from the opening 60. FIG. 5 is a view of the periphery of the opening 60 as viewed from the viewpoint of the worker 61 standing in the worker space S3. Since the tool post 7 can be seen through the opening 60 as shown in the figure, the tool change operation can be performed accurately. Since the loader fence 51A (51B) holds the loader travel area S2 and the worker space S3, the tool replacement work can be performed safely even when the loader 2 is operated. In the meantime, in the other processing portion S1B (S1A), processing can be continued as usual.

  When replacing the spindle chuck 5a, after the operation of the entire machine tool with a loader is stopped, the loader fence 51A (51B) on the corresponding machining section S1A (S1B) side is set to the second open state Q3 to partition the spindle chuck 5a. The plate 40A (40B) is set to the rear position P3 (FIG. 10). As a result, the partition between the loader travel area S2 and the worker space S3 is eliminated, and the worker 61 located in the worker space S3 can replace the spindle chuck 5a over the loader travel area S2.

  As described above, the loader fences 51A and 51B can be opened and closed in two stages from the closed state Q1 to the first open state Q2 and the second open state Q3. The degree of opening of the loader fences 51A and 51B can be changed according to the above. For example, when a setup operation such as tool replacement is performed on the tool post 7 which is a processing device on the front side of one processing unit 3A (3B), the loader fence 51A (51B) on the corresponding processing unit 3A (3B) side is performed. Is set to the first open state Q2 to stop the processing only in the corresponding processing portion 3A (3B) and perform a predetermined setup operation, and the other processing portion 3B (3A) can continue processing as usual. it can. Since the tool change is a relatively frequent setup operation, if the tool change can be performed without stopping the machining of the other machining part, the production efficiency can be greatly improved.

  Since the partition plates 40A and 40B are configured to open and close by moving back and forth, it is possible to obtain a sufficient frontage for widening the left and right widths. In the closed front position P1, the partition plates 40A and 40B are inclined forward and downward, and the front end positions of the partition plates 40A and 40B are low. Therefore, the main shaft 5 in the machining areas S1A and S1B performed by opening the partition plates 40A and 40B. In addition, it is easy to perform setup work on the tool post 7, inspection in the processing areas S1A and S1B, cleaning, and the like. Since the partition plates 40A and 40B are in a horizontal posture at the opened rear position P3, the partition plates 40A and 40B can be stored compactly without interfering with other members of the machine tool. Therefore, the height of the machine tool can be kept low.

  FIG. 11 shows an embodiment in which the loader fences 51A and 51B are opened differently. In the embodiment, the loader fences 51A and 51B are rotated from the closed state Q1 to the first opening by rotating the lower end side of the vertical cover 51b rearward in order to avoid interference with the partition plates 40A and 40B inclined rearwardly upward. Switching to the state Q2 is made. On the other hand, in the embodiment of FIG. 11 in which the partition plates 40A and 40B are provided horizontally, the entire loader fences 51A and 51B are slid backward to switch from the closed state Q1 to the first open state Q2. ing. Then, the loader fences 51A and 51B are folded by pushing the vertical cover portion 51b rearward at the slid position, so that the second open state Q3 is obtained. When the partition plates 40A and 40B are inclined, the loader fences 51A and 51B are entirely slid rearward along the inclination of the partition plates 40A and 40B, so that the first open state from the closed state Q1. It is good also as a structure switched to Q2.

1 is a perspective view of a machine tool with a loader according to an embodiment of the present invention. It is a front view of the machine tool with the loader. It is a fracture side view of the machine tool with the loader. It is a top view of the machine tool with the loader. It is the figure which looked at a part of machine tool with the loader from an operator's viewpoint. It is explanatory drawing of the partition plate opening operation | movement of the machine tool with the loader. It is explanatory drawing of the loader fence opening | release operation | movement of the machine tool with the loader. It is a side view of the cam follower and guide groove of the loader fence. It is explanatory drawing which shows the state which is performing the setup operation | work with respect to the tool rest of the machine tool with the loader. It is explanatory drawing which shows the state which is performing the setup operation | work with respect to the main axis | shaft of the machine tool with the loader. It is a fracture side view of a machine tool with a loader concerning a different embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Machine tool main body 2 ... Loader 3A, 3B ... Processing part 5 ... Spindle (rear-side processing equipment)
5a ... Spindle chuck 6 ... Tool post (front processing equipment)
DESCRIPTION OF SYMBOLS 10 ... Tool 40A, 40B ... Partition plate 42 ... Shutter 50 ... Airframe cover 51A, 51B ... Loader fence 51a ... Horizontal cover part 51b ... Vertical cover part 60 ... Opening part 61 ... Worker Q1 ... Closed state Q2 ... First opening State Q3 ... Second open state S1A, S1B ... Processing region S2 ... Loader travel region S3 ... Worker region

Claims (2)

A machine tool main body that processes a workpiece by a processing unit including a plurality of processing devices arranged side by side, and a loader that is installed on the upper side of the machine tool main body and supplies and discharges the workpiece to and from the processing unit. A machine tool with a loader, wherein an operator stands in front of the machine tool main body and performs a setup operation on the machining unit,
A machine body cover that covers a machining area in which the machining unit is provided and a loader travel area in which the loader travels, an open / close-type partition plate that partitions the process area and the travel area, and a part of the machine cover, A loader fence that is configured to be movable with respect to the other part of the machine body cover and separates the loader travel area and the worker space on the front side thereof;
The loader fence is
From the closed state that partitions the loader travel region and the worker space, and partitions the processing region and the worker space,
A state in which the loader travel area and the worker space are separated from each other, and between the machining area and the worker space, the worker located in the worker space applies to the processing equipment on the front side of the working portion. A first open state in which an opening for performing setup work is formed;
Up to an opening degree that does not partition the loader travel area and the worker space, and allows an operator located in the worker space to perform setup work on the processing equipment on the rear side of the processing unit over the loader travel area In the second open state in which the partition plate can be opened and closed,
Ri is freely der to open in at least two stages,
The loader fence includes a horizontal cover portion that covers an upper portion of the loader travel region in the closed state, and a vertical cover portion that covers a front portion of the loader travel region, and the first open state is from the closed state. A machine tool with a loader in a state where the vertical cover portion is moved rearward . The machine tool main body is a multi-axis lathe provided with a plurality of the processing parts arranged side by side on the left and right, the front processing equipment in the plurality of processing equipment of each processing part is the tool post, and the rear processing equipment is the main axis. each processing unit in response to said partition plate and loader fence processing unit and only provided with which claim 1 Symbol placement loader machine tool with the same number.

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