WO2002034439A1 - Procede de commande de dispositif d"alimentation de materiau en barre - Google Patents
Procede de commande de dispositif d"alimentation de materiau en barre Download PDFInfo
- Publication number
- WO2002034439A1 WO2002034439A1 PCT/JP2001/008939 JP0108939W WO0234439A1 WO 2002034439 A1 WO2002034439 A1 WO 2002034439A1 JP 0108939 W JP0108939 W JP 0108939W WO 0234439 A1 WO0234439 A1 WO 0234439A1
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- Prior art keywords
- bar
- feeder
- length
- numerically controlled
- data
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B13/00—Arrangements for automatically conveying or chucking or guiding stock
- B23B13/02—Arrangements for automatically conveying or chucking or guiding stock for turning-machines with a single working-spindle
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
- Y10T29/5104—Type of machine
- Y10T29/5109—Lathe
- Y10T29/5114—Lathe and tool
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T82/00—Turning
- Y10T82/25—Lathe
- Y10T82/2514—Lathe with work feeder or remover
- Y10T82/2521—Bar feeder
Definitions
- the present invention relates to a method of controlling a bar supply device provided on a numerically controlled lathe for continuously processing products while feeding a long bar through a through hole of a main shaft by a predetermined length.
- a bar supply device that supplies a long bar through a through hole formed on the axis of a spindle of a numerically controlled lathe (hereinafter referred to as an NC lathe) is known.
- the bar feeder is configured to project a tip of the bar from a guide bush provided in front of the spindle or the spindle for a predetermined length, process the tip of the bar with a tool mounted on a tool rest, and cut off the tip.
- a guide bush provided in front of the spindle or the spindle for a predetermined length
- process the tip of the bar with a tool mounted on a tool rest and cut off the tip.
- FIG. 9 shows the configuration of a conventional example of an NC lathe provided with such a bar supply device.
- the NC lathe 110 is a headstock 1 13 that can move forward and backward in the same direction as the Z axis, and is rotatably supported by the headstock 1 13.
- Spindle 1 1 2 formed with through hole 1 1 2 a through which W passes, chuck 1 1 7 gripping bar W provided at the tip of this spindle 1 1 2, and headstock 1 1 3
- It has a guide bush 116 provided rotatably supporting the tip of the bar W, and a tool rest 114 fitted with a plurality of tools T.
- the tool T mounted on the turret 1 1 4 is used to cut off the product formed on the tip of the bar W, as well as a tool for processing the tip of the bar W protruding from the guide bush 1 16 And a positioning tool for positioning the bar W on the spindle axis C by bringing the tip of the bar W delivered from the bar feeder 120 described below into contact with the cutting tool.
- NC lathe 1 1 1 NC unit 1 1 5 3 and the movement of the tool post 114 are controlled.
- the bar supply device 120 for supplying the bar W to the NC lathe 110 is installed behind the NC lathe 110 (to the right in FIG. 9).
- the bar supply device 120 includes a bar storage unit (not shown) that stores a plurality of bars W, and a plurality of bars W that are supplied from the bar storage unit and are placed on the spindle axis C.
- the bar support portions 128a, 128b, 128c and the bar support portions 128a, 128b, 128c are provided on each of the bar support portions 128a, 128b, 128c. In this way, there are steady rest chucks 129a, 129b, 129c for gripping the bar W at an intermediate position.
- a similar steady rest chuck 129 d is also provided on the rear end side of the spindle 112 of the NC lathe 110.
- a feeder 123 for sending out the bar W placed on the bar support portions 128a, 128b, 128c toward the main shaft 112 is provided.
- a finger chuck 123a that grips the rear end of the bar W and rotates together with the bar W is provided.
- the feeder 123 is driven in the direction of the main shaft axis C by a drive unit 121 including a motor 12 la, a pulley 121 b rotated by driving the motor 121 a, and a belt 121 c wound around the pulley 121 b. It is moved forward and backward.
- a drive unit 121 including a motor 12 la, a pulley 121 b rotated by driving the motor 121 a, and a belt 121 c wound around the pulley 121 b. It is moved forward and backward.
- the supply of the bar W from the bar storage section, the opening and closing of the steady rest chucks 129a, 129b, 129c, and 129d and the driving of the motor 121a are provided in the bar supply device 120. It is controlled by the control unit 125.
- the feeder 123 and the steady rest chucks 129a, 129b, 129c, and 129d do not interfere with each other when the bar W is fed to the spindle 112 and during the processing of the bar W. Need to be
- the operator manually feeds the feeder 123 in the direction of the spindle axis C, and positions 1 to ⁇ before the steady rest chucks 129 a, 129 b, 129 c, 129 d (FIG. 9). ) And the control unit 125 stores the position of the feeder 123 at this time, and when the feeder 123 comes to the position 1 to 4, the steady rest chuck corresponding to each position 1 to 4 1 29a, 129b, 129c, 129d were set to open.
- the shortcut of the bar W (when starting to process the supplied bar, For the timing of cutting off the tip of a bar with low machining accuracy) and the timing of replacing the bar W, feed the feeder 1 2 3 manually before starting automatic machining, and feed the feeder 1 2 3
- the position of the feeder 123 at this time is stored in a memory or the like of the controller 125.
- the flowchart of FIG. 10 shows the procedure of each setting described above.
- the machining program is read into the NC unit 115 at the same time as the setting is started (step S100), and the number of products processed and the bar Enter the length (steps S102, S103). Further, a feed torque corresponding to the length and diameter of the bar W is input to the control unit 125 of the bar feeder 120 (step S104).
- step S105 the timing to release the steady rest chucks 1229a to l29d is input to the control unit 125.
- the input of this timing is performed by manually feeding the feeder 123 to the positions 1 to 4 and inputting the coordinate position of the feeder 123 at this time.
- the positions 1 to 4 must be determined in consideration of the maximum stroke of the headstock 113 during machining.
- step S106 the position of the feeder 123 at the timing of the replacement of the bar W and the timing of the short cut is input to the controller 125 (step S106).
- step S107 it is input whether the length of the bar W stored in the bar storage unit (not shown) is uniform or non-uniform.
- step S108 When the above input is completed, the data is set, each input value is stored in the memory of the NC unit 115 or the control unit 125 (step S108), and the automatic processing is started (step S1). 0 9).
- the operator manually feeds the feeders 123 to the positions 1 to 4 to position them, and the coordinates of the feeders 123 at the positions 1 to 4 Since it is necessary to input the position and the like to the control unit 125, the work is troublesome, and there is a problem that it takes a long time from the initial setting of the bar W to the start of the automatic machining.
- the present invention has been made in view of the above problems, and can automatically set a timing for opening and closing a steady rest chuck, a timing for a shortcut, and a timing for bar replacement with a minimum input operation. It is an object of the present invention to provide a control method of a bar feeder and a numerically controlled lathe capable of reducing input and setting time, operation time, and processing time. Disclosure of the invention
- the present invention provides a headstock, a main shaft rotatably supported by the headstock, and having a through hole formed along an axis, and the main shaft passing through the through hole.
- a tool rest on which a tool for processing a bar protruding from the tool rest is mounted, and a numerical control lathe having a control device for controlling the movement of the headstock or the tool rest is mounted on a bar support.
- the position data of the steady rest chuck, the length dimension data of the bar, the length dimension data of a product obtained by processing the bar, and the product Cut to separate from the bar Dimension data of the processing width is set in the control device in advance, and the control device determines the position of the feeder at any time when the bar is positioned by the feeder position determining means and when the bar is processed.
- the supply of the bar to the bar support, opening and closing of the steady rest chuck, and feeding of the bar are performed based on the indexed position of the feeder and the preset data. It is a way to control.
- the bar is supplied from the bar storage unit to the bar support unit according to a command from the control device of the NC lathe.
- the bar placed on the bar support is gripped by the steady rest chuck so as not to bend during automatic processing and when being sent out to the spindle.
- the control device determines the position of the feeder at any time during positioning of the bar by the feeder position determining means and during processing, and releases the steady rest chuck that may interfere with the feeder.
- the dimension data of the cutting width described above can be obtained, for example, from the blade width of the parting tool. Therefore, by subtracting the consumed bar length from the original bar length, the length dimension data of the processed bar can be obtained.
- the length data of the product and the size data of the cutting width may be manually set by the operator, but may be extracted from the processing program for processing the product. it can.
- the feeder position determining means a servo mechanism or an encoder can be used. With this configuration, the position of the feeder can be determined from the rotation angle of a rotary shaft such as a motor or a bully provided in the drive unit that moves the feeder.
- the tip of the bar supported by the bar support is detected by a detection unit positioned and provided at a predetermined position, and the control device detects the tip of the bar by the detection unit. From the position of the feeder, the length data of the product extracted from the machining program, and the dimension data of the cutting width, to determine the position of the tip of the bar, The feeding of the bar and the opening and closing of the steady rest may be controlled.
- the detection means positioned at a predetermined position for detecting the leading end of the bar can automatically determine the length of the bar without inputting the length of the bar by the operator. Become. Further, the tip position of the bar can be easily obtained from the length of the bar obtained as described above and the position of the feeder detected by the servo mechanism or the like.
- the feeder position indexing means is an arithmetic unit provided in the control device, and a contact member for positioning a tip end of the bar material fed by the feeder at a predetermined position.
- the arithmetic unit is configured to determine the position data of the contact member, the length data of the bar, the length data of the product and the dimension data of the cutting width. Thus, the position of the feeder may be obtained.
- the position of the tip of the feeder can be obtained from the position of the contact member and the length of the bar. Also, by subtracting the product length and the cutting width of the cutting tool from the initial length of the bar, the length of the bar after processing can be obtained, and the position of the contact member and the rod after processing. From the length of the material, the amount of movement of the feeder due to the processing of the product can be obtained.
- the number of processed products may be input to the control device in advance, and the required number of the bars and the estimated remaining length of the bars may be obtained based on the number of processed products.
- processing is performed until the bar is used up. It may also be determined whether or not.
- a plurality of bar materials having different lengths are stored in a bar material storing unit for storing the bar materials, and the control device transmits length dimension data of the bar materials stored in the bar material storing unit.
- the bar is supplied from the bar storage section based on the length dimension data of the product and the number of processed products so that the expected remaining length of the bar is minimized. You may.
- the rod can be used effectively, and the processing cost can be reduced.
- the object of the present invention is also achieved by a numerically controlled lathe provided with a control device for performing control according to the above control method.
- a headstock, a spindle rotatably supported by the headstock and having a through hole formed along an axis, a tool rest on which a tool is mounted, and a movement of the head stock or the tool rest are controlled.
- a numerical control lathe having a control device, wherein the tool of the tool rest is provided separately from the numerical control lathe and grips the bar so as not to sway.
- the machining was performed with the tool of the tool post, and the controller determined the position of the feeder when the bar was positioned by the feeder position determining means and the position of the feeder when processing the bar as needed.
- the bar material is transferred to the bar support portion. It has a function of controlling supply, opening and closing of the steady rest check, and feeding of the bar.
- FIG. 1 is a schematic configuration diagram of a main part of a numerically controlled lathe provided with a bar supply device according to a first embodiment of the present invention.
- FIG. 2 is a flowchart for explaining a control method of the bar feeder, and shows a procedure for setting each set value before the automatic machining is started.
- FIG. 3 is a flowchart illustrating a control method of the bar supply device, and illustrates a control procedure of the bar supply device after the automatic processing is started.
- FIG. 4 is a diagram showing an example of a setting screen of the bar supply device displayed on the display of the NC device.
- FIG. 5 is a diagram showing the relationship between the spindle and the feeder when performing a short cut.
- FIG. 6 is a schematic configuration diagram of a main part of a numerically controlled lathe including a bar supply device according to a second embodiment of the present invention.
- FIG. 7 is a flowchart illustrating a control method of the bar feeder, which describes a control procedure of the bar feeder after the automatic processing is started.
- FIG. 8 is a schematic configuration diagram of a main part of a numerically controlled lathe including a bar supply device according to a third embodiment of the present invention.
- FIG. 9 shows a conventional numerical control lathe provided with a bar feeder according to a conventional example of the present invention. It is a schematic structure figure of an important section.
- FIG. 10 is a flow chart for explaining a control method of a conventional bar feeder, showing a procedure of setting each set value before starting automatic machining.
- FIG. 1 is a block diagram of a numerically controlled lathe provided with a bar feeder according to a first embodiment of the present invention
- FIGS. 2 and 3 are front views illustrating control procedures of the bar feeder.
- FIG. 2 illustrates a procedure for inputting and setting each set value before the start of automatic machining
- FIG. 3 illustrates a control procedure of the bar feeder after the start of automatic machining.
- FIG. 4 is a diagram showing a setting screen displayed on a display when setting various setting values in the NC device
- FIG. 5 is a diagram showing an operation of a spindle and a feeder when performing a shortcut. .
- the basic configuration of the NC lathe and the bar feeder shown in Fig. 1 is the same as that of the NC lathe and the bar feeder shown in Fig. 9, so the same reference numerals are used for the same parts and members. In addition, detailed description of the relevant parts and members will be omitted.
- the NC device 1 15 of the NC lathe 110 supplies the bar W in the bar supply device 120, drives the motor for moving the feeder 123, and the steady chuck 112. Control the opening and closing of 9a ⁇ l29d.
- the motion mode for moving the feeder 123 is the service time 122 1 a ′. Further, the description will be made on the assumption that the headstock 113 is movable in the Z-axis direction and moves forward and backward in accordance with a command from the NC device 115.
- FIG. 1 the procedure for setting various set values will be described with reference to FIGS. 1, 2, and 4.
- FIG. 1 the procedure for setting various set values will be described with reference to FIGS. 1, 2, and 4.
- the NC unit 1 15 has the initial position 0 1 of the headstock 1 1 3 at the start of machining, the origin position O 2 of the feeder 1 2 3 in the bar feeder 1 2 0 and the steady rest check 1 Each position of 29 a to l 29 d is set in advance.
- step S10 the machining program is read into the NC unit 115 (step S11).
- the operator inputs the number of processed products and the length of the bar W used for processing the products into the NC device 115 (steps S12, S13). Also, input the feed torque according to the diameter of the bar W, etc. (step S14), and enter whether the length of the bar W stored in the bar storage unit (not shown) is uniform or non-uniform. (Step S15).
- the cutting width of the parting tool which is the dimension of the product length and cutting width, may be manually entered by the operator in step S13. It is also possible to read it.
- the setting is performed, and the input value is stored in the memory of the NC device 115 (step S16).
- the NC unit 115 can calculate the length of the bar W consumed by processing one product (equal to the sum of the product length and the blade width of the parting bit), the steady chuck 129 Release timing from a to 29 d, required number of bars, remaining length of bars W when processing the required number of products, number of bars that can be processed until the bars are used up, timing of bar W replacement Is calculated (step S17).
- the calculation result is displayed on the setting screen 130 of the display of the NC device 115 as shown in FIG. 4 (step S18). The operator can confirm whether or not there is an error in the setting contents by using the setting screen 130.
- step S19 determines whether or not to process the product until the bar W is used up based on the processable number calculated by the NC device 115 (step S19), and performs the processing until the bar W is used up. In this case, the final number of processed products is confirmed from the setting screen 130 (step S20).
- step S21 the automatic processing is started (step S21).
- the NC device 115 takes out the bar W from the bar storage unit (not shown) and outputs a command to supply the bar W to the bar support units 128a to 28c. (Step S31).
- the steady rest chucks 129a to 129d close to grip the bar W (step S32).
- the NC device 115 drives the servomotor 121a 'to feeder 1
- the position of the tip of the feeder 123 is determined by the NC unit 115 based on the rotation angle of the rotation shaft of the sensor 121a '.
- the NC device 115 determines whether the feeder 123 has reached a position to open any of the preset steady rest chucks 129a to 129d (step S34), and determines that the feeder 123 has reached the release position. At this time, a command is issued to open the steady rest check corresponding to the open position (step S35).
- the rod W supplied from the rod storage section often has low dimensional accuracy and processing accuracy at the tip. Therefore, before starting the processing of the product, it is necessary to cut off the tip portion of the rod W having a low processing accuracy with a parting tool in advance. To perform this operation, the NC device 115 advances the feeder 123 so that the tip of the bar W comes to a preset position inside the guide bush 116 (step S).
- the position of the tip of the bar W is the position of the feeder 123 and the initial length L of the bar W. Can be obtained by adding
- the NC device 115 stops driving the servomotor 121a 'to stop the movement of the feeder 123, and also stops the chuck 117 of the spindle 112. Is driven to grip the bar W (Step S37)
- step S38 the headstock 113 and the feeder 123 are synchronously moved (step S38), and the tip of the bar W is projected from the guide bush 116 by a predetermined length (FIG. 5 (c)). See).
- the parting tool (indicated by reference numeral T1 in FIG. 5) mounted on the tool post 114 cuts off the tip of the work W by a predetermined length (step S39, see FIG. 5 (d)). .
- the tip is cut off Let the length of bar W be.
- not only the parting-off processing but also the end face of the work W may be processed by a preset length using a tool for the end face processing.
- the NC device 115 releases the chuck 117, releases the gripping of the bar W by the chuck 117 (step S40), and moves the headstock 113 to the initial position at the start of the operation. Move to 1 (Step S41, see Fig. 5 (e)). At this time, since the feeder 123 does not move, the position of the bar W is maintained at the position when the tip of the bar W was cut off. After the headstock 113 has moved to the initial position ⁇ 1, the NC device 115 drives the chuck 117 to grip the bar W (step S42).
- a machining program for machining one product is started (step S43), and machining of the bar W by the tool is started while the headstock 113 and the feeder 123 are synchronously moved in the Z-axis direction.
- this tool is designated by the symbol T2).
- the NC device 115 monitored (step S45), when reaching the open position, the NC device 115 outputs a command to open the steady rest chuck corresponding to the open position (step S46).
- step S47 When the headstock 113 and the feeder 123 reach a preset position while moving synchronously (step S47), it is determined whether or not molding of one product has been completed (step S48), and it must be completed. If so, the process returns to step 44 and processing is continued. If the molding of one product has been completed, the product is cut off from the bar W with a parting tool
- Step S49 the processing program for processing one product is completed (step S50).
- the NC unit 115 counts the number of processed products, and the number is set in advance. It is determined whether or not the number has been reached (step S51). When the number reaches the preset number, the machining is finished (step S52).
- step S53 it is determined from the remaining length L k +1 of the bar W whether to replace the bar W (step S53). Whether or not to replace the bar W is determined by comparing a preset value with the remaining length L k +1 and determining whether the remaining length L k +1 is smaller than the preset value.
- the main shaft 112 and the feeder 123 are attached to the guide bush 116 and the chuck 117. The determination may be made based on whether or not interference occurs. If it is determined that it is not necessary to replace the bar W, the process returns to step S40 to start processing the next product.
- step S 5 4 the headstock 1 13 and the feeder 1 2 3 are retracted (step S 5 4), and the gripping of the bar W by the chuck 1 17 is released ( Step S 5 5), further retract feeder 1 2 3 to discard remaining material
- Step S56 Then, returning to step S31, the subsequent steps are repeated.
- the motor for moving the feeder 123 can be applied without having a support mechanism or an encoder.
- the motor 122a for moving the feeder 123 is a normal motor having no servo mechanism or the like.
- a tool T for positioning which is an abutting member for abutting the leading end of the supplied bar W to perform positioning, is mounted on the tool rest 114.
- the positioning tool T only needs to be able to position the bar W by abutting the tip of the bar W. It is not limited to a dedicated positioning tool, but can be used for other applications such as parting tools and cutting tools. The tool used may be used.
- the bar W is supplied from a bar storage unit (not shown) to the bar support units 128 a to 128 c. Then (step S61), the steady rest chucks 129a to 129d close to grip the bar W (step S62).
- the tool post 114 indexes the positioning tool T to a predetermined position, and positions the tool T at a preset position in front of the guide bush 115 (step S63, see FIG. 6).
- the NC device 115 determines the length of the supplied bar W (preset) and the position of the contact point 04 (see Fig. 6) where the tip of the bar W contacts the tool T.
- the movement target position ⁇ 3 of the feeder 123 is obtained (step 64).
- the movement target position 03 can be obtained by subtracting the length L of the bar W from the position of the contact point 04 as shown in FIG.
- the NC device 115 determines whether any of the steady rest chucks 129a to 129d is present on the movement path of the feeder 123 until the movement target position ⁇ 3 is reached (step S65), and the movement process is performed. If there is a steady rest chuck that may cause interference with the feeder 123, the steady rest chuck is opened (step S66).
- step S67 the motor 121a is driven to move the feeder 123 forward.
- the rear end of the bar W is gripped by the finger chuck 123a of the feeder 123 (step S67).
- step S68 When the end of the bar W passes through the main shaft 112 and the guide bush 116 and abuts on the positioning tool T (step S68), the advance of the bar W and the feeder 123 is restricted, and the motor 121a is overloaded. Works. Due to this overload, the NC device 115 stops the motor 121a and drives the chuck 117 to grip the bar W (step S69). After that, the tool rest 114 indexes the parting tool into a predetermined position.
- the bar W When the tip of the bar W is brought into contact with the positioning tool T, the bar W is pushed back by the repulsive force acting on the bar W from the positioning tool T, and the rod W is precisely positioned. If it becomes difficult, move the positioning tool T to the bar W side after the motor 121a stops and before the chuck 117 grips the bar W, and slightly move the bar W It is good to make contact so that it is pushed back.
- the positioning tool T is retracted from the contact point 04, the headstock 113 is moved forward by a predetermined amount (step S71), and the rod projecting from the guide bush 116 is moved.
- the length of material W is set to a preset value.
- the cutting tool mounted on the tool post 114 cuts off the tip of the work W by a preset length (step S72).
- the NC device 115 releases the gripping of the bar W by the chuck 117 (step S73), and moves the headstock 113 to the initial position ⁇ 1 at the start of processing (step S74). ). Thereafter, the NC device 115 drives the chuck 117 to grip the bar W (step S75).
- step S 7 the machining program for machining one product starts (step S 7
- the tip position of the feeder 123 is obtained by adding the travel distance of the headstock 113 to the tip position of the feeder 123 when the tip of the bar W contacts the positioning tool T (corresponding to the movement target position 03).
- step S78 the processing of the bar W is started while moving the headstock 113 in the Z-axis direction.
- the feeder 123 moves in the Z-axis direction following the movement of the bar W with the movement of the headstock 113.
- Step S it is determined whether or not the tip of the feeder 123 has reached any of the preset open positions of the steady rest chucks 129a to 129d (Step S). 79) When any of the steady rest chucks reaches the open position, the NC device 115 outputs a command to open the steady rest chuck corresponding to the open position (step S80).
- step S81 When the headstock 113 and the feeder 123 reach the preset positions while moving (step S81), it is determined whether or not molding of one product has been completed (step S82). Then, returning to step S77, the processing is continued. If molding of one product is completed, cut off the product from bar W with parting-off tool
- Step S83 the processing program for processing one product is completed (step S84).
- the NC device 115 counts the number of processed products and determines whether or not the number has reached a preset number (step S85). When the number reaches the preset number, the machining is finished (step S86).
- step S87 If the number does not reach the preset number, it is determined from the remaining length L k +1 of the bar W whether to replace the bar W (step S87). When it is determined that the bar W need not be replaced, the process returns to step S73 to start processing the next product.
- step S88 the headstock 113 and the feeder 123 are retracted (step S88), and the gripping of the bar W by the chuck 117 is released. (Step S89), the feeder 123 is further retracted and the remaining material is discarded (Step S90).
- FIG. 8 the same parts and members as those in FIG. 1 of the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.
- a photoelectric sensor 1 19 for detecting the tip of the bar W is positioned and provided in front of the steady rest check 12 c of the bar supply device 120. Further, in this embodiment, the motor for moving the feeder 123 is the same as the first embodiment.
- a detection signal is transmitted from the photoelectric sensor 119 to the NC device 115.
- the NC unit 115 determines the position of the feeder 123 at the time when the detection signal is input from the rotation angle of the rotary shaft of the servo motor 121a ', and determines the position of the feeder 123, The initial length L of the bar W supplied to the bar supporting portions 128 a to 128 c from the preset position of the photoelectric sensor 119. Ask for.
- the operator since the operator does not need to input the exact length of the bar W, the operator does not need to know the length of the bar W accurately, and The burden of evening can be further reduced, and the processing time can be further reduced.
- the bar W having an uneven length can be supplied at random.
- the photoelectric sensor 11 When the remaining bar W is discarded, the photoelectric sensor 11 The remaining length of the bar W can be known by retracting the feeders 1 2 and 3 until the feed is detected. By doing so, it becomes possible to store the bar W in the bar storage section by classifying the bar W by the remaining length.
- the senor for detecting the tip of the bar is described as a photoelectric sensor.
- the sensor is not limited to the photoelectric sensor described above, and may be another sensor or a switch such as a proximity switch.
- a plurality of bars W having different lengths are classified and prepared in the bar storage section, and the length of the bars W stored in the bar storage section and the processing of the product are provided. From the number, length data of the product and dimensional data of the cutting width, the NC unit 115 finds a combination of rods W of different lengths so that the remaining length of the final rod W is the shortest. It is possible to
- the timing of opening the steady rest chuck, the timing of shortcut, and the timing of bar replacement can be automatically set with a minimum input operation. Therefore, it is possible to shorten the input and setting time, reduce the work burden of the operator, and shorten the processing time.
- the present invention can be applied not only to a numerically controlled lathe having a movable headstock but also to a numerically controlled lathe having a fixed type headstock.
- the present invention can be applied not only to a numerically controlled lathe that cuts a bar with a parting tool, but also to a numerically controlled lathe that cuts a bar by a laser beam, a power jet, wire electric discharge machining, or the like. It is.
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Description
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2001294227A AU2001294227A1 (en) | 2000-10-26 | 2001-10-11 | Control method for bar material feeder of nc lathe and nc lathe |
DE10194677T DE10194677T1 (de) | 2000-10-26 | 2001-10-11 | Verfahren zur Steuerung eines Stabzufuhr-Apparates in einer numerisch gesteuerten Drehmaschine und eine numerisch gesteuerte Drehmaschine |
JP2002537474A JP3954965B2 (ja) | 2000-10-26 | 2001-10-11 | 数値制御旋盤における棒材供給装置の制御方法及び数値制御旋盤 |
US10/148,632 US6665579B2 (en) | 2000-10-26 | 2001-10-11 | Control method for bar material feeder of NC lathe and NC lathe |
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JP2000-327803 | 2000-10-26 | ||
JP2000327803 | 2000-10-26 |
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PCT/JP2001/008939 WO2002034439A1 (fr) | 2000-10-26 | 2001-10-11 | Procede de commande de dispositif d"alimentation de materiau en barre |
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US (1) | US6665579B2 (ja) |
JP (1) | JP3954965B2 (ja) |
CN (1) | CN1220568C (ja) |
AU (1) | AU2001294227A1 (ja) |
CH (1) | CH695548A5 (ja) |
DE (1) | DE10194677T1 (ja) |
TW (1) | TW501959B (ja) |
WO (1) | WO2002034439A1 (ja) |
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- 2001-10-11 DE DE10194677T patent/DE10194677T1/de not_active Withdrawn
- 2001-10-11 CN CN01803067.XA patent/CN1220568C/zh not_active Expired - Lifetime
- 2001-10-11 WO PCT/JP2001/008939 patent/WO2002034439A1/ja active Application Filing
- 2001-10-11 CH CH01106/02A patent/CH695548A5/de not_active IP Right Cessation
- 2001-10-11 AU AU2001294227A patent/AU2001294227A1/en not_active Abandoned
- 2001-10-11 JP JP2002537474A patent/JP3954965B2/ja not_active Expired - Lifetime
- 2001-10-11 US US10/148,632 patent/US6665579B2/en not_active Expired - Lifetime
- 2001-10-17 TW TW090125630A patent/TW501959B/zh not_active IP Right Cessation
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KR20150041084A (ko) | 2012-08-17 | 2015-04-15 | 나가노 오토메이션 가부시키가이샤 | 가공 시스템 및 가공 시스템에 의해 짧은 길이의 로드 형상의 가공물을 가공하는 방법 |
WO2024095680A1 (ja) * | 2022-10-31 | 2024-05-10 | スター精密株式会社 | 工作機械システムおよび工作機械システムの制御方法 |
Also Published As
Publication number | Publication date |
---|---|
CN1392813A (zh) | 2003-01-22 |
DE10194677T1 (de) | 2003-11-13 |
JPWO2002034439A1 (ja) | 2004-03-04 |
TW501959B (en) | 2002-09-11 |
AU2001294227A1 (en) | 2002-05-06 |
JP3954965B2 (ja) | 2007-08-08 |
US20020183888A1 (en) | 2002-12-05 |
US6665579B2 (en) | 2003-12-16 |
CH695548A5 (de) | 2006-06-30 |
CN1220568C (zh) | 2005-09-28 |
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