JP5535838B2 - Machine tool and material processing method - Google Patents

Description

  The present invention relates to a machine tool and a material processing method.

  A spindle that grips a material for conventional processing, an opposing shaft that faces the spindle, and a product processing unit that processes a product having a predetermined shape from the material gripped by the spindle, and is gripped by the spindle. 2. Description of the Related Art A machine tool that mounts a support tool that supports an end portion of a material on the opposed shaft and supports the material by the support tool to process the product into the product is known (for example, see Patent Document 1).

Japanese Utility Model Publication No. 62-192804 (page 5-7, FIG. 3)

  However, the machine tool has a drawback that it is necessary to prepare a support in advance before processing the material. In addition, because the second spindle is used as the opposing shaft, if there is backside processing of the product in the product processing process, there will be restrictions on the processing of the product, or multiple products of a small variety of products will be processed sequentially. In the case of a machining process using the second main shaft in the machining process, there is a disadvantage that special and expensive equipment such as a support stand dedicated to the support holding the support is required.

A machine tool of the present invention for solving the above-described problems includes a main shaft 1 that grips a material for processing , an opposed shaft that faces the main shaft 1, a processing tool that processes the material, and the main shaft 1 that faces the main shaft 1. and control means 10 for controlling the axial and said machining tool, said control means 10, product processing means for performing the control so as to process the product of predetermined shape from the gripping material on the spindle 1 is configured to function as provided by mounting a support 16 for supporting the ends of the gripped material into the main shaft 1 to the counter shaft, said product processing means, the material, the support In the machine tool configured to be supported by 16 and processed into the product, a support tool processing portion 17 for processing a support tool is provided at a tip portion of the material gripped by the spindle 1, and the control means 10 , before the support process section 17 Parting material, said the support processing portion transfer means for performing the control as delivered to the counter shaft is configured to function, and the grip is passed to the counter shaft by the support processing portion transfer means is configured to function as a support processing means for performing the control so as to fabricate the support 16 by processing the support processing portion 17 that is, the product processing unit, wherein the support processing portion The material after the 17 is cut off is manufactured by the support tool processing means , supported by the support tool 16 in a state in which the grip to the opposed shaft is maintained , and processed into the product. This is the first feature.

Secondly, a primary product formed by processing the material supported by the support tool 16 manufactured by the support tool processing means by the control means 10 being gripped by the main shaft 1 is removed from the main shaft 1. wherein is gripped on opposite shaft is configured to function as the material transfer means for performing control so pass by, the support discharge means 14 for discharging provided with the support 16 from the opposite axis, said support discharge and means 14 and the material transfer means, after completion of machining of the primary products in the spindle 1, said support member 16 is discharged from the opposite shaft by said support discharge means 14, the counter by the material transfer means is linked from the main shaft 1 to the shaft on the processed receiving pass Suyo primary product, said product processing means, wherein the primary products delivered to the counter shaft by the material transfer means, Characterized in that it is configured to secondary processing in the serial counter shaft.

  Thirdly, a second main shaft 3 for secondary processing that opposes the main shaft 1 is provided, and the counter shaft is composed of the second main shaft 3.

  4thly, the said material consists of the elongate bar 9 which can process a some product.

Method for processing a material of the present invention to solve the above problems, the gripping material to the main shaft 1 is held by the opposing shaft which faces the main shaft 1, cut Tsu butt the tip portion of said material, before Symbol pairs passing the adaxial, it is gripped by the opposing shaft as support processing unit 17, by processing the support processing portion 17 is gripped to the counter shaft to the bracket 16 for supporting the ends of the gripping material on the spindle 1 the after the support process section 17 was Tsukkira, the spindle 1 side of the material gripped by the said main axis 1, while holding at the main shaft 1, support in a state of being gripped in the opposing shaft The first feature is that it is supported by 16 and processed.

Second, after the support tool processing portion 17 is cut through, the material gripped by the main shaft 1 is supported by the support tool 16 gripped by the opposing shaft, and processed into a primary product by the main shaft 1. and, after the processing of the to the primary product has been completed, said support member 16 and discharged from the opposite shaft, a pre-Symbol primary product, Te passed to the opposing shaft from the spindle 1, it is gripped the counter shaft, It processes by the said opposing shaft, It is characterized by the above-mentioned.

  Third, after the support tool 16 is once supported by the opposing shaft, the material gripped by the main shaft 1 is continuously supported by the support tool 16 and product processing is continuously performed. And

  According to the structure of the present invention configured as described above, it is possible not only to process the material stably and with high accuracy by supporting the material with the support tool, but also to support the material with the opposing shaft. Therefore, there is an effect that the processing can be easily performed without preparing a support in advance before processing the material.

  In addition, when the processed material is transferred to the opposing shaft after the processing with the main shaft and the secondary processing is performed with the opposing shaft, the material transfer means for transferring the material gripped on the main shaft to the opposing shaft. And a support tool discharging means for discharging the support tool from the opposing shaft, and after the processing of the material on the main shaft is completed, the product processing means discharges the support tool from the opposing shaft, and By passing the processed primary product from the main shaft to the shaft and performing the secondary processing on the opposed shaft, the supporting base of the support tool and the main shaft for secondary processing are shared by the opposed shaft. be able to.

  In the case of a machine tool that suppresses the occurrence of machining restrictions, can be machined with a simple structure while supporting the material with a support tool, and is conventionally provided with a second spindle for secondary machining By using the second main shaft as an opposing shaft, the processing can be performed without changing the configuration, and there is an effect that a special and expensive facility is not required.

  In addition, by using a long bar that can process a plurality of products as materials, especially when secondary processing is required, the support tool and the primary product are alternately held by the opposed shaft. The product can be processed continuously. When secondary processing is unnecessary, a product can be processed continuously with high accuracy by manufacturing a support from the bar during the first processing of one bar.

It is a top view of the automatic lathe to which this invention is applied. It is principal part sectional drawing of the spindle part which shows the processing state of the material hold | gripped by the spindle. It is principal part sectional drawing of the main-axis part which shows the state which delivers a material from a 1st main axis | shaft to a 2nd main axis | shaft, and performs a process. It is a flowchart figure which shows the action | operation of a product processing means. It is principal part sectional drawing of the spindle part which shows the state at the time of front processing. It is principal part sectional drawing of the main-shaft part which shows the discharge state of a support tool. It is principal part sectional drawing of the spindle part which shows the state at the time of secondary processing. It is principal part sectional drawing of the spindle part which shows the collection | recovery state of a product.

  As shown in FIG. 1, an automatic lathe, which is a machine tool to which the present invention is applied, includes a first spindle stock 2 that rotatably supports a first spindle 1, and a second spindle that rotatably supports a second spindle 3. A headstock 4 is provided. The two spindle stocks 2 and 4 are arranged to face each other so that the axes of the two spindles 1 and 3 are parallel to each other. The first headstock 2 is fixedly supported on a bed 6 of an automatic lathe.

  The second spindle stock 4 is supported on the bed 6 so as to be movable in the axial direction (Z3 axis direction) of the second spindle 3 and the X3 axis direction orthogonal to the Z3 axis direction in the horizontal direction. By moving the second headstock 4 in the X3 axis direction, both the main shafts 1 and 3 can be arranged to face each other so that their axis centers coincide. On both opposing surfaces of the main spindles 1 and 3, chucks that respectively hold the processing material are provided so as to be openable and closable.

  On the opposite side of the first headstock 2, the first main shaft 1 is movable in the Z2 axis direction parallel to the axial direction (Z1 axis direction) of the first main shaft 1 and in the X2 axis direction perpendicular to the Z2 axis direction. A one tool post 7 is provided. In the present embodiment, the first tool post 7 is composed of a turret tool post, and a plurality of processing tools for processing the material gripped by the first main spindle 1 are mounted thereon. A second tool post 8 is fixedly provided on the opposite side of the second head stock 4. A plurality of processing tools for processing the material gripped by the second main spindle 3 are mounted on the second tool post 8.

  The automatic lathe is supplied with a long bar 9 from the rear end of the first spindle 1 as a processing material by a conventionally known bar feeder or the like. As shown in FIG. 2A, the bar 9 protrudes from the tip of the first main shaft 1 by a predetermined length and is gripped by the first main shaft 1 by the chuck 11. As shown in FIG. 2 (B), the automatic lathe has a portion protruding from the first main shaft 1 of the bar 9 as the rotation of the first main shaft 1 and the Z2 axis direction of the first tool post 7 and the X2 axis. By the movement of the direction, it can be processed by the processing tool 7A mounted on the first tool post 7.

  As shown in FIG. 2C, the second spindle 3 has the tip portion of the bar 9 gripped by the first spindle 1 by the movement of the second spindle stock 4 in the Z3 axis direction. 12 can be moved in the Z3 axis direction toward the first main shaft 1. As shown in FIG. 3A, the automatic lathe is configured so that the chuck 12 of the second main spindle 3 is inserted in a state where the tip portion of the bar 9 gripped by the first main spindle 1 is inserted into the second main spindle 3. By closing and cutting off the bar 9 with the parting tool 13, a part of the bar 9 processed by the first main shaft 1 can be transferred to the second main shaft 3 as a material.

  The material gripped by the second spindle 3 was mounted on the second tool rest 8 as shown in FIG. 3B by the movement of the second spindle stock 4 in the X3 axis direction and the Z3 axis direction. It can be processed with the processing tool 8A. A rod-shaped knockout means (knockout rod) 14 is mounted in the second main shaft 3 so as to be movable back and forth in the axial direction of the second main shaft 3. By releasing the gripping of the material of the second main shaft 3 and moving the knockout means 14 toward the tip of the second main shaft 3, the material of the second main shaft 3 can be discharged.

  The automatic lathe is provided with a control device 10 for controlling the movement of the two tool rests 7 and 8 and the second spindle stock 4 and the rotation of the two spindles 1 and 3. The control device 10 functions as a product processing means for processing a product having a predetermined shape from the bar 9 by a built-in program.

As shown in the flowchart of FIG. 4, the product processing means supports the bar 9 gripped by the first main shaft 1 when processing the product from the bar 9 in step S <b> 1. 16 is processed, and then in step S2, the bar 9 is processed (primary processing) with the first main shaft 1 using the support 16 held by the second main shaft 3. Next, in step S3, the support 16 is discharged from the second main spindle 3, and in step S4, a part of the bar 9 processed in step S2 is delivered to the second main spindle 3 as a primary product. Machining (secondary machining) with the second spindle as a material.

  As described above, the primary product is transferred to the second main shaft 3 by moving the second main shaft 3 in the Z3 direction, opening and closing the chucks 11 and 12 of the first main shaft 1 and the second main shaft 3, and parting off. The control device 10 functions as a material delivery means according to a program. Since the product is completed by the processing in step S4, the product (finished product) is collected, the number of processed products is confirmed in step S5, and the above steps S1 to S4 are repeated until the required number is reached.

  Since this automatic lathe processes the product by the product processing means as described above, the length of the bar 9 necessary for processing one product is the length required for the processing performed in step S1 (support tool). 16) and the length required for processing performed in steps S2 and S4 (length required for processing the product).

  For this reason, the front-end | tip part of the bar 9 for processing one product comprises the support tool processing part 17 for the said support tool processing, as FIG. 2 shows. In the present embodiment, a sufficiently long bar material is supplied to the automatic lathe for processing a single product, and a plurality of products are processed from one bar material. It is configured as follows.

  As shown in FIG. 2 (B), the processing of the support 16 in the step S1 is performed by setting a predetermined length from the tip of the support processing unit 17 of the bar 9 held by the first main shaft 1 to a second length. The outer diameter is cut to a size that is held by the chuck 12 of the main shaft 3. Next, as shown in FIG. 2C and FIG. 3A, the support tool processing portion 17 is cut off from the bar 9 and transferred to the second main shaft 3. The control device 10 functions as a support tool processing means according to the processing program in step S 1, and manufactures the support tool 16 from the support tool processing unit 17.

  At this time, the control device 10 functions as a material transfer means, and transfers the support tool processing portion 17 processed by the first main shaft 1 from the first main shaft 1 to the second main shaft 3 as a material. That is, the material transfer means also serves as a support tool processing portion transfer means for cutting the support tool processing portion 17 from the bar 9 and transferring it to the second main shaft 3. Next, as shown in FIG. 3 (B), the tip of the support tool processing portion 17 is processed by the second main shaft 3 so as to be tapered, and the processing of the support tool 16 is completed. The support 16 is processed and manufactured while being gripped by the second spindle 3.

  In the primary processing in step S2, first, as shown in FIG. 5A, the recess 18 is processed in the center of the tip of the bar 9 gripped by the first main shaft 1, and then in FIG. 5B. As shown in the drawing, the bar 9 is projected for a length necessary for processing the product, and the second main shaft 3 is moved in the Z3 axis direction so that the tip of the support 16 is accommodated and abutted on the recess 18. The tip of the bar 9 held by the main shaft 1 is rotatably supported by the support 16. Next, as shown in FIG. 5C, in a state where the bar 9 is supported by the support 16, it is processed into a predetermined shape by the processing tool 7 </ b> A of the first tool post 7. As a result, the primary product is processed.

  In the primary processing in step S2, since the tip end of the bar 9 is supported by the support 16, even if the protruding length of the bar 9 from the first main shaft 1 is relatively long, Processing can be performed stably, and high-precision processing can be performed.

  In particular, since the support 16 is manufactured by being gripped by the second main shaft 3, the axis of the support 16 and the axes of the two main shafts 1 and 3 coincide with each other with high accuracy. Processing accuracy is further improved. Further, since it is not necessary to prepare and prepare a support in advance during the primary processing, the processing can be easily performed.

  As shown in FIG. 6, the discharge of the support 16 in step S3 is performed by moving the second main shaft in the Z3 axis direction so that the support 16 and the bar 9 are separated from each other. By moving toward the tip of the second spindle 3 and opening the chuck 12 of the second spindle 3, the support 16 is pushed out from the tip of the second spindle 3 and discharged. The knockout bar 14 constitutes a support discharging means for discharging the support 16 from the second main shaft 2.

  In the secondary processing in step S4, first, the control device 10 is made to function as a material delivery means, and as shown in FIGS. 7A and 7B, the primary product 9 ′ (processing by the first main spindle 1) is performed. A part of the completed bar 9 is cut off and delivered to the second spindle 3 as a material. Since the delivery of the primary product 9 'is the same as described above, a detailed description is omitted. Next, as shown in FIG. 7 (C), the primary product 9 ′ is subjected to predetermined processing with the processing tool 8A of the second tool post 8 to complete the product processing, and as shown in FIG. The product is collected by the knockout bar 14.

  As described above, the support 16 that supports the tip of the bar 9 is provided on the second main shaft 3 to perform processing (primary processing) on the first main shaft 1, so that the support for holding the tailstock and the support 16 is held. Special and expensive special mechanisms and equipment such as a support stand dedicated to the tool are not required, and the end portion of the material can be easily supported and processed stably with high accuracy.

  Further, when processing one product, the support 16 used for processing the product is manufactured every time the product is processed, and discharged from the second main shaft 3 before the secondary processing (processing by the second main shaft 3). With this configuration, even when processing a product that requires secondary processing, the second spindle 3 is used without suppressing processing restrictions and without providing a special mechanism such as a tailstock. Thus, the processing can be performed by continuously supporting the end of the material.

  In step S1, when the outer end of the support tool processing portion 17 is subjected to external cutting and the diameter of the portion gripped by the second spindle 3 of the support tool processing portion 17 is processed in step S4. Further, by making the diameter of the portion gripped by the second main shaft 3 of the primary product 9 ′ continuous, the support 16 and the primary product 9 can be continuously replaced without replacing the chuck 12 of the second main shaft 3. It is possible to alternately perform gripping on the second main spindle 3.

  In addition, since the support 16 is manufactured from the same material (bar material 9) as the product, the support at the time of the primary processing is stabilized, and the discharged support 16 can be treated together with cutting waste. The support 16 can be easily processed.

  In the present embodiment, the case where the secondary processing is performed has been described. However, when the secondary processing is unnecessary, the tip of the bar 9 is used as the support tool processing portion, and the support 16 is only attached to the first time of one bar. By processing and providing the second main shaft 3, a plurality of products can be processed from the bar 9 by continuously using the support 16. Also in this case, it is not necessary to prepare a support tool in advance by processing the support tool 16 with the second main shaft 3, and the material can be supported with a simple configuration, and high-precision processing or the like can be performed.

  Further, in the present embodiment, an example in which the support 16 is gripped using the second main shaft 3 as an opposed shaft facing the first main shaft 1 has been described. However, in the case of an automatic lathe that does not have the second main shaft 3, The automatic lathe of the present invention can be provided by providing an opposing shaft that faces the first main shaft 1 and can process the support 16 in the same manner as the second main shaft. However, in the case of an automatic lathe having the second spindle 3, the automatic lathe of the present invention can be obtained without changing the configuration of the automatic lathe.

In the above embodiment, the example in which the first headstock 2 is integrally fixed on the bed 6 in the Z1 axis direction has been described. However, the first headstock 2 is provided to be movable in the Z1 axis direction. A so-called guide bush type lathe provided with a guide bush on the opposite side of the first main shaft 1 can also be used.

  In this case, since the first spindle 1 (first spindle stock 2) moves in the Z1 axis direction, the second spindle 3 (second spindle stock 4) is moved in the Z2 axis direction in synchronization with the first spindle 1. Thus, primary processing or the like can be performed using the guide bush while the tip of the material gripped by the first spindle is supported by the support 16.

1 First spindle (spindle)
3 Second spindle (opposite axis)
9 Bar material
14 Knockout stick (support tool discharge means)
16 Supporting tool 17 Supporting tool processing section

Claims (7)

A main shaft (1) for gripping a material for processing , a counter shaft facing the main shaft (1), a processing tool for processing the material, the main shaft (1), the counter shaft, and the processing tool are controlled. control means (10) and comprising a control means (10), and the product processing means for performing the control so as to process the product of predetermined shape from the gripping material on the spindle (1) is configured to function Te, the provided main shaft (1) support for supporting the ends of the gripped material (16) is mounted on the opposing shaft, said product processing means, the material, the in the produced machine tool to machine the product is supported by the support (16), the tip portion of the holding material on the spindle (1), support the processing unit for support processing (17) the provided, said control means (10), the support processing portion (1 ) Cutting-off from the material, said the support processing portion transfer means for performing the control as delivered to the counter shaft is configured to function, and the support by the processing unit transfer means passes received in the counter shaft is configured to function as a support processing means for performing the control so as to fabricate the support (16) by processing the support processing portion is gripped (17) is, the product processing unit However, the material after the support tool processing portion (17) has been cut through is manufactured by the support tool processing means and supported by the support tool (16) in a state in which the grip to the opposed shaft is maintained. A machine tool configured to process the product . The control means (10) is gripped by the main shaft (1), and a primary product formed by processing a material supported by the support tool (16) manufactured by the support tool processing means is used as the main shaft. (1) from then gripped to the counter shaft is configured to function as the material transfer means for performing control such pass, the support discharge means for discharging the support (16) from said counter shaft (14 ), And the support tool discharging means (14) and the material delivery means are connected to the support tool (16) by the support tool discharging means (14) after the processing of the primary product on the main shaft (1) is completed. was drained from the counter shaft, the material transfer means by is linked to the main shaft (1) Arrival undergoing primary products of the processed from Suyo to the counter shaft, said product processing means, by the material transfer means Above The primary products delivered to adaxial, configured machine tool according to claim 1 to secondary processing at the counter shaft.   3. The machine tool according to claim 1, further comprising a second main shaft for secondary machining (3) facing the main shaft (1), wherein the counter shaft includes the second main shaft (3).   The machine tool according to claim 1, 2 or 3, wherein the material comprises a long bar (9) capable of processing a plurality of products. Gripping material on the main shaft (1) is held by the opposing shaft which faces the spindle (1), a tip portion of said material cut Tsu collision, passed before Symbol pair adaxial, support the processing unit (17) The support tool processing portion (17) gripped by the counter shaft is processed into a support tool (16) that supports the end of the material gripped by the main shaft (1), and the support tool After the processed part (17) was cut off, the material on the main shaft (1) side gripped by the main shaft (1) was gripped by the opposing shaft in a state of being gripped by the main shaft (1) . The processing method of the material which is supported and processed by the support tool (16) in the state . After the support tool processing portion (17) is cut off, the material gripped by the main shaft (1) is supported by the support tool (16) gripped by the opposed shaft, and the main shaft (1) Te transfer processed in primary, after processing of the to the primary product has been completed, the support (16) and discharged from the opposite shaft, a pre-Symbol primary product, to the opposing shaft from the main shaft (1) The material processing method according to claim 5, wherein the material is gripped by the opposing shaft and processed by the opposing shaft.   After the support tool (16) is once supported by the opposed shaft, the material gripped by the main shaft (1) is continuously supported by the support tool (16), and product processing is continuously performed. The material processing method according to claim 5.

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