JPH04118905U - Work reversing device for lathe - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a work reversing device for a lathe that can simplify the structure and easily perform work reversing work. [Structure] A workpiece reversing device for a lathe according to the present invention includes a reversible ring-shaped member 11 having a housing section that can detachably store a workpiece from both sides of the workpiece, and a workpiece inside the housing section. A servo motor 12 for driving the ring-shaped member 11 is provided.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a workpiece reversing device, especially for reversing the front and back of a workpiece during turning. This invention relates to a workpiece reversing device for lathes.

0002

[Conventional technology]

In general, a lathe is a rotatable main body with a spindle chuck for gripping the workpiece. It includes an axle stand and a tool stand having a tool. In addition, the back side of the workpiece that is being processed The machine is equipped with a workpiece reversing device to turn the workpiece upside down in order to process has also been put into practical use.

0003 This work reversing device consists of a pair of devices arranged in parallel. Each has a workpiece holding section. And one device can rotate around the vertical axis. The device is configured so that it can be placed opposite to the other device. Ma In addition, in order to automate machining, such lathes are equipped with a headstock and workpiece reversing device. A workpiece transport device called a gantry loader is installed to load and unload workpieces from the machine. I'm being kicked.

0004 During machining, the gantry loader transports the workpiece to the headstock, and The workpiece is gripped by the chuck. Then, the workpiece is rotated by the rotation of the headstock. , the workpiece is machined using the tools on the tool stand. Next, the gantry loader processes After finishing the work, remove it from the spindle chuck and hold it on one side of the work reversing device. let Next, rotate the reversing device that holds this workpiece so that it faces the other reversing device. have it placed. Then, the workpiece is transferred to the other reversing device and held there. this As a result, the front and back of the workpiece are reversed. Next, the gantry loader is transferred from the reversing device to the spindle chuck. Similarly, due to the rotation of the headstock, etc. Then, processing is performed on the back side of the workpiece.

[0005]

[Problem that the idea aims to solve]

As mentioned above, the conventional work reversing device is composed of a pair of devices. Therefore, the structure is complicated. Also, the workpiece gripped by one device can be transferred to the other device. Since a transfer operation is required, reversing the workpiece is complicated.

[0006] The purpose of this invention is to simplify the structure and facilitate workpiece reversal for lathes. The objective is to provide conversion equipment.

[0007]

[Means to solve the problem]

The workpiece reversing device for lathes according to the present invention reverses the front and back of the workpiece during turning. This device includes a reversing section, a holding section, and a driving section.

[0008] The reversing section is a housing that can accommodate the work piece in a manner that allows it to be detached from both the front and back sides of the work piece. It is reversible and has a section. The holding part is provided in the reversing part, and the holding part is provided in the reversing part. It is used to hold work within the department. The driving section drives the reversing section. It is.

[0009]

[Effect]

In the present invention, the reversing section accommodates the workpiece that is being turned in the accommodating section. Inside the containment area The workpiece is held by the holding section. Next, the driving section drives the reversing section, and the reversing section Invert. As a result, the workpiece in the storage section is reversed.

0010 In this case, the workpiece in the storage section of the reversing section can be attached and detached from both sides. Therefore, the workpiece can be reversed simply by reversing the reversing section. therefore, There is no need to provide a pair of reversing units, and the workpiece can be transferred from one device to the other. No further operations are required. Therefore, the structure can be simplified and the workpiece can be easily turned over. I can do it.

[0011]

【Example】 FIG. 2 shows a turret lathe in which an embodiment of the present invention is adopted. This turret lathe has a base 1. At the center of the upper surface of the base 1, there is a main A shaft head 2 is provided. This spindle head 2 includes two spindle chucks 3, 4 are arranged. In addition, the upper part of the spindle head 2 is equipped with a A reversing device 10 (described later) is provided for this purpose.

0012 Tool stands 5 and 6 are provided on the upper surface of the base 1 on both left and right sides of the spindle head 2. It is being These tool stands 5 and 6 are mounted on guide rails provided on the top surface of the base 1, etc. Movement mechanisms such as wheels and ball screws allow movement in the left-right and front-back directions. ing. The front ends of the tool stands 5 and 6 have a structure on the outer periphery that allows multiple tools to be attached. Tool turrets 7 and 8 are rotatably provided.

[0013] The reversing device 10 has a ring-shaped member 11, as shown in FIG. This resource A housing portion for housing the workpiece W is formed in the hole 11a of the ring-shaped member 11. There is. The workpiece W is stored in this storage section from both sides, the front side and the back side of the page in Fig. 1. can be done. On the other hand, a servo motor 12 is provided within the spindle head 2 . child The lower part of the ring-shaped member 11 is connected to the tip of the rotating shaft 12a of the servo motor 12. There is. The rotating shaft 12a coincides with the central axis (vertical axis) of the ring-shaped member 11.

[0014] A ring-shaped rotating member 13 is provided around the ring-shaped member 11 . child The rotating member 13 is rotatable around the ring-shaped member 11. rotating member A hole 13a is formed in the lower part of 13. The rotating shaft 12a of the servo motor 12 is , is inserted through this hole 13a. Moreover, the rotating member 13 is mounted on the rotating member 13. A pair of actuators 15 are provided for driving. Each actuator 15 are arranged on both sides of the rotating shaft 12a of the servo motor 12. Aku The tuator 15 is fixed onto the ring-shaped member 11 via a flange 16. . Further, a rack 17 is arranged on the side of the actuator 15. rack 17 is arranged in the direction of the rod 18 of the actuator 15, and is connected to the rod 18. The racks 17 are connected by a connecting member 19. On the other hand, the outer circumference of the rotating member 13 A gear portion 20 is formed in a part. The gear part 20 meshes with the rack 17 ing.

[0015] On the ring-shaped member 11 and the rotating member 13, there are three claw members 21 extending in an arc shape. is provided. Each claw member 21 is arranged at approximately 120° intervals. Claw part A pin 22 is inserted into the center of the material 21, and the tip of the pin 22 is connected to a ring-shaped part. It is fixed on the material 11. The claw member 21 is rotatable around the pin 22. There is. At the end of the claw member 21 on the rotating member 13 side, there is a pin 23 extending in a direction perpendicular to the plane of the paper. Fixed. On the other hand, the rotating member 13 has a notch 24 with which this pin 23 engages. is formed. The pin 23 is slidable within this notch 24. child With this configuration, when the rotating member 13 rotates, the claw member 21 rotates around the pin 22. The tip of the claw member 21 can be opened and closed.

[0016] Additionally, above this turret lathe, there is a gantry roller for transporting the workpiece. 30 is provided. The gantry loader 30 is placed above the turret lathe. It has a movable frame 31. This moving frame 31 is a rail constructed in the left and right direction. It is possible to move on 32. A substantially L-shaped arm 33 is provided on the upper surface of the moving frame 31. is attached so that it can slide forward and backward. Inside the arm 33 is a lifting bar 3. 4 is inserted through it so that it can be raised and lowered freely. A loader head 35 is provided at the lower end of the lifting bar 34. It is being The loader head 35 is a chuck for detachably holding a workpiece. (not shown). Although not shown, the side of this turret lathe A rotary work feeder and other workpiece storage systems are used to accommodate a large number of workpieces for processing. A storage device is in place.

[0017] Next, the operation will be explained. During processing, the moving frame 31 of the gantry loader 30 is moved along the rail 32. and place it on the workpiece feeder side. Then, load the work on the work feeder. It is gripped by the chuck of the reader head 35. Next, drive the moving frame 31 to The head 35 is placed opposite to the spindle chuck 3 or 4. And arm 33 The workpiece gripped by the chuck of the loader head 35 is moved in the front and back direction and Attach it to the rack 3 or 4. After mounting the workpiece, the gantry loader 30 is in the retreat position. placed.

[0018] Next, the spindle chucks 3 and 4 are rotated. Meanwhile, the tool turrets 7 and 8 are rotated. to determine the station where the desired tool is installed. Next, the tool stand 5, 6 is brought close to the spindle chucks 3 and 4, and the spindle chuck is moved by the tools on the tool turrets 7 and 8. Processing is performed on the workpieces in the jacks 3 and 4.

[0019] After the machining is completed, the gantry loader 30 is driven and the spindle chucks 3 and 4 grip the The finished workpiece is mounted on the chuck of the loader head 35. Next, raise the lift bar 34. The chuck is raised to face the reversing device 10. From this state, the above The work gripped by the chuck is transferred to the reversing device 10.

[0020] At this time, each claw member 21 of the reversing device 10 (FIG. 1) is open and in the state of maximum diameter. is placed in a state of From this state, slide the arm 33 to the reversing device 10. approach, and insert the work on the loader head 15 side into the hole 11a of the ring-shaped member 11. do. Next, the workpiece grip by the chuck on the loader 35 side is released, and the Each claw member 21 of the transfer device 10 is closed. In this case, actuator 15 is driven. to make the rod 18 protrude. Then, the rack 17 is locked via the connecting member 19. The rotating member 13 moves in the direction in which the door 18 protrudes, thereby causing the rotating member 13 to engage with the rack 17. Rotate clockwise in FIG. As a result, the tip of each claw member 21 moves around the pin 22. It rotates clockwise, and the work W is gripped by the tip of each claw member 21.

[0021] Next, the loader head 35 of the gantry loader 30 is retracted. Next, the servo The motor 12 is driven to reverse the rotating shaft 12a (rotate 180 degrees). This results in , the entire reversing device 10 is reversed via the ring-shaped member 11, and the back side of the workpiece W is turned over. Move to the front side of the lathe (toward the front side of the paper in FIG. 1). From this state, the gantry 30 is driven to make the loader head 35 face the reversing device 10. And arm 33 to move the chuck of the loader head 35 to the workpiece W in the reversing device 10. approach. Then, actuator 15 is driven to move rod 18 backward. . As a result, the tip of each claw member 21 rotates in the opposite direction to the above, and each claw member 21 The grip of the workpiece W by the handler is released. On the other hand, the chuck on the loader head 35 side The workpiece W in the reversing device 10 is gripped. As a result, the reversal inside the reversing device 10 The finished workpiece is transferred to the chuck of the loader head 35.

[0022] Next, the loader head is moved by sliding the arm 33 and raising and lowering the loader head 35. The chuck of the loader head 15 is arranged opposite to the spindle chucks 3 and 4, and The workpiece is mounted on the spindle chucks 3 and 4. From this state, do the same as above, Machining is performed on the back side of the workpiece by the tools of the tool turrets 7 and 8.

[0023] In this case, the reversing device 10 can freely attach and detach the workpiece from both the front and back sides of the workpiece. Since it is designed to be accommodated, there is no need to provide a pair of reversing devices, and There is also no need for an operation to transfer a work gripped by one device to another device. For this reason , the structure is simplified, and workpiece reversal work can be done easily.

[0024] [Other Examples] (a) In the above embodiment, the reversing device 10 rotates around its central axis (vertical axis). However, the application of the present invention is not limited thereto. For example, this center A rotating shaft is provided at a position away from the shaft, and the reversing device rotates around this rotating shaft. It's okay. In this case as well, the same effects as in the embodiment described above can be achieved.

[0025] (b) Another embodiment of the present invention is shown in FIGS. 3 and 4. In these figures, Figure 1 The same reference numerals indicate the same or equivalent parts. In the apparatus shown in FIGS. 3 and 4, the front Compared to the device of the embodiment described above (FIG. 1), the servo motor 12 is located above; The difference is that the actuator 17 and the actuator 17 are arranged on the spindle head 2.

[0026] On the spindle head 2, a vertical frame 40 and a A horizontal frame 41 is provided. A ring-shaped member 11 is mounted on the horizontal frame 41. A servo motor 12 is provided for reversing. In addition, the horizontal frame 41 A hole 41a is formed therein. The rotating shaft 12a of the servo motor 12 is inserted into this hole 4. 1a, and its tip is connected to the ring-shaped member 11.

[0027] A hole 13b is formed in the lower part of the rotating member 13 at a position opposite to the hole 13a. . A support shaft 42 extending vertically is inserted into this hole 13b. The support shaft 42 It is arranged on the extension line of the rotating shaft 12a of the motor 12, and the tip has a ring-shaped part. It is connected to the lower part of the material 11. At the bottom of the support shaft 42, there is a connecting member 4 extending in the left-right direction. 3 is provided. The support shaft 42 passes through this connecting member 43, and its tip end is rotatably supported on the upper part of the spindle head 2. Further, the connecting member 43 is connected to the support shaft 4 2, and rotates integrally with the support shaft 42. Also, at the tip of the connecting member 43, An actuator 17 is provided. The actuator 17 is arranged in the vertical direction. The rear end portion is rotatably connected to the tip of the connecting member 43. Ma In addition, a joint 45 is attached to the rod end of the actuator 17. Ru. On the other hand, a protrusion 46 that protrudes outward is formed on the outer periphery of the rotating member 13. . The joint 45 is rotatably connected to this protrusion 46.

[0028] When opening and closing each claw member 21, the actuator 17 is driven to protrude the rod. Or, by retracting, the rotating member 13 rotates via the joint 45. As a result, each claw member 21 rotates around the pin 22, thereby causing the claw member 21 to rotate. The workpiece W is gripped or released by the gripper. Also, when reversing the workpiece W, By driving the servo motor 12 and rotating the rotating shaft 12a, the ring-shaped part The entire reversing device 10 is reversed around the support shaft 42 via the member 11 . This allows the The back side of the arc W moves to the front side (towards the front of the page). In this way, the work W Reversal work is performed.

[0029]

[Effect of the idea]

In the workpiece reversing device for lathes according to the present invention, the workpiece can be attached and detached from both sides. Since a reversing section is provided to accommodate the work, the structure can be simplified and the work of reversing the workpiece can be simplified. You can simply do it.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of an embodiment of the present invention.

FIG. 2 is an overall perspective view of a turret lathe in which the embodiment is adopted.

FIG. 3 is a schematic configuration diagram of another embodiment of the present invention;
III-III cross-sectional diagram.

FIG. 4 is a schematic configuration diagram of the other embodiment.

[Explanation of symbols]

10 Reversing device 11 Ring-shaped member 12 Servo motor 21 Claw member

Claims (1)

[Scope of utility model registration request] 1. A workpiece reversing device for a lathe for reversing the front and back sides of a workpiece during turning processing, the reversible reversing part having a storage section that can removably accommodate the workpiece from both the front and back sides of the workpiece. A work reversing device for a lathe, comprising: a holding section provided in the reversing section for holding a work in the storage section; and a driving section driving the reversing section.