WO2020149268A1 - Dispositif d'alimentation d'une machine-outil - Google Patents

Dispositif d'alimentation d'une machine-outil Download PDF

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Publication number
WO2020149268A1
WO2020149268A1 PCT/JP2020/000919 JP2020000919W WO2020149268A1 WO 2020149268 A1 WO2020149268 A1 WO 2020149268A1 JP 2020000919 W JP2020000919 W JP 2020000919W WO 2020149268 A1 WO2020149268 A1 WO 2020149268A1
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WO
WIPO (PCT)
Prior art keywords
base member
screw shaft
machine tool
moving body
slider
Prior art date
Application number
PCT/JP2020/000919
Other languages
English (en)
Japanese (ja)
Inventor
和雅 高野
真吾 梶川
泰佑 磯▲崎▼
直彦 杉田
通 木崎
翔一 柏原
Original Assignee
株式会社牧野フライス製作所
国立大学法人 東京大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社牧野フライス製作所, 国立大学法人 東京大学 filed Critical 株式会社牧野フライス製作所
Priority to DE112020000272.1T priority Critical patent/DE112020000272T5/de
Priority to CN202080008407.2A priority patent/CN113272098B/zh
Publication of WO2020149268A1 publication Critical patent/WO2020149268A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0032—Arrangements for preventing or isolating vibrations in parts of the machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22—Feeding members carrying tools or work
    • B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
    • B23Q5/40—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
    • F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls

Definitions

  • the present application relates to a machine tool feed device.
  • Patent Document 1 discloses an optical scanning laser processing machine as a machine tool.
  • This machine tool includes a bed, a cross beam that moves on the bed, a saddle that moves on the cross beam, and a machining head supported by the saddle.
  • CFRP Carbon Fiber Reinforced Plastic
  • This machine tool CFRP (Carbon Fiber Reinforced Plastic) is generally used for the cross beam. With such a configuration, vibration is reduced while achieving light weight and high rigidity.
  • machine tools generate various vibrations. These are, for example, (1) due to imbalance of the rotating spindle, (2) due to intermittent cutting force, (3) due to reproduction chatter, and (4) moving body starts or stops moving. Occasionally, vibration due to reaction force acting on the base member is included. (1) In the vibration due to the imbalance of the main shaft, the main shaft mainly vibrates. Further, (2) the vibration due to the intermittent cutting force mainly vibrates the spindle and the table. Further, in (3) vibration due to reproduction chatter, the tool mainly vibrates. These spindles, tables and tools are relatively light in weight and are located at the ends of machine tools.
  • the moving body in a feeding device of a machine tool in which a moving body is guided and driven with respect to a base member, the moving body is arranged between the base member and the moving body, and guides movement of the moving body with respect to the base member.
  • a ball screw mechanism having a screw shaft holder, and a CFRP material is sandwiched between the screw shaft holder and the base member.
  • the CFRP material is sandwiched between the screw shaft holder of the ball screw mechanism and the base member.
  • the present inventor reduces the vibration displacement of the base member due to the reaction force when the moving body starts or stops moving, without changing the material of the base member or the moving body, by sandwiching the CFRP material at the location. I found that I can. Therefore, it is possible to reduce the vibration displacement of the base member as described above while maintaining high static rigidity.
  • the CFRP material may be sandwiched between the linear motion rolling guide and the base member.
  • the vibration displacement of the base member can be further reduced.
  • the linear motion rolling guide may include a rail and a carriage that moves along the rail, and the CFRP material is provided between the rail and the base member or between the carriage and the base member. May be sandwiched between.
  • the screw shaft holder may include first and second bearing bracket units spaced apart along the screw shaft, and the CFRP material is spread over a range including the first and second bearing bracket units. Good. In this case, since the CFRP material is spread between the first and second bearing bracket units without any gap, the vibration displacement of the base member can be further reduced.
  • the CFRP material may include a plurality of layers each containing carbon fibers along a predetermined direction, and the plurality of layers are such that the orientation of the carbon fibers is ⁇ 45° with respect to the moving direction of the moving body. It may be laminated. In this case, the CFRP material has high rigidity in all directions in the plane including the moving direction of the moving body.
  • the base member may be made of aluminum alloy. In this case, the weight of the base member can be reduced.
  • a machine tool feed device having high static rigidity and capable of reducing vibration displacement of a base member due to a reaction force when a moving body starts or stops moving. It is possible.
  • FIG. 6 is a sectional view taken along the line VI-VI in FIG. 5. It is a graph which shows an example of an experimental result.
  • A) is a graph which shows the vibration damping behavior of an aluminum alloy.
  • B) is a graph showing vibration damping behavior of CFRP.
  • FIG. 1 is a front view showing a machine tool including a feeding device according to an embodiment.
  • 2 and 3 are a plan view and a side view showing the machine tool of FIG. 1, respectively.
  • the machine tool 100 can be, for example, a vertical machining center.
  • the machine tool 100 may be another processing machine.
  • the machine tool 100 includes a bed 1, a slider 2, a saddle 3, a ram 4, a spindle head 5, a spindle 6, and a table 7.
  • the machine tool 100 may further include other components.
  • the spindle 6 rotates around the vertical axis Os.
  • the direction along the axis Os is the Z-axis direction (also referred to as the vertical direction).
  • the direction in which slider 2, saddle 3, ram 4, and spindle head 5 are arranged in the horizontal direction is the Y-axis direction (also referred to as the front-back direction).
  • the side on which the saddle 3, the ram 4, and the spindle head 5 are present with respect to the slider 2 is the front side, and the opposite side is the rear side.
  • the direction perpendicular to the Y-axis direction is the X-axis direction (also referred to as the left-right direction).
  • the bed 1 has a base 11 and a main body 12.
  • the base 11 is arranged on a foundation such as the floor of the factory.
  • the main body portion 12 is provided above the base 11.
  • the main body portion 12 has a pair of side walls 12a and a ceiling wall 12b bridged above the pair of side walls 12a.
  • the pair of side walls 12a are arranged so as to face each other in the X-axis direction.
  • the ceiling wall 12b connects the upper portions of the pair of side walls 12a.
  • the slider 2 straddles the upper surfaces of the pair of side walls 12 a of the bed 1.
  • the slider 2 is made of an aluminum alloy for weight reduction.
  • the slider 2 is driven on the bed 1 along the Y-axis direction by the feeder FS1. That is, in the relationship between the bed 1 and the slider 2, the slider 2 serves as a “moving body” that moves in a predetermined direction (Y-axis direction), and the bed 1 supports a “base” that supports the moving body. Function as a "member”.
  • the feeding device FS1 includes one or a plurality (a pair in the present embodiment) of the linear motion rolling guide L1, a ball screw mechanism BS1, and a motor M1.
  • the linear motion rolling guide L1 is arranged between the bed 1 and the slider 2, and guides the movement of the slider 2 with respect to the bed 1.
  • Each of the linear motion rolling guides L1 includes a rail R1 and one or more (a pair in the present embodiment) carriages C1.
  • the rail R1 is fixed to the upper surface of the bed 1 which is the "base member”
  • the carriage C1 is fixed to the bottom surface of the slider 2 which is the "moving body”.
  • the ball screw mechanism BS1 drives the slider 2 with respect to the bed 1.
  • the ball screw mechanism BS1 includes a screw shaft S1, a nut N1, and a screw shaft holder B1.
  • the screw shaft S1 is arranged so that its central axis extends along the Y-axis direction.
  • the screw shaft holder B1 includes first and second bearing bracket units B1a that are spaced apart along the screw shaft S1 (only one bearing bracket unit B1a is shown in the figure).
  • Each bearing bracket unit B1a includes one or a plurality of rolling bearings and a bracket that supports the rolling bearings.
  • the first and second bearing bracket units B1a can support both ends of the screw shaft S1, for example.
  • the screw shaft holder B1 is fixed to the ceiling wall 12b of the bed 1. Note that in other embodiments, the screw shaft holder B1 may include only one bearing bracket unit B1a (for example, the screw shaft S1 may be supported in a cantilever manner).
  • the nut N1 moves along the screw shaft S1.
  • the nut N1 is fixed to the bottom surface of the slider 2.
  • the motor M1 is connected to one end of the screw shaft S1.
  • the nut N1 and the slider 2 move along the Y-axis direction as the screw shaft S1 is rotated by the motor M1.
  • the feed of the slider 2 in the Y-axis direction is controlled by an NC device (not shown).
  • the saddle 3 is attached to the front surface of the slider 2.
  • the saddle 3 is driven on the slider 2 along the X-axis direction by the feeding device FS2. That is, in the relationship between the slider 2 and the saddle 3, the slider 2 serves as a “base member” and the saddle 3 serves as a “moving body”.
  • the feed device FS2 includes one or a plurality (a pair in the present embodiment) of the linear motion rolling guide L2, a ball screw mechanism BS2, and a motor M2.
  • the linear motion rolling guide L2 is arranged between the slider 2 and the saddle 3, and guides the movement of the saddle 3 with respect to the slider 2.
  • Each of the linear motion rolling guides L2 includes a rail R2 and one or more (a pair in this embodiment) carriages C2.
  • the rail R2 is fixed to the front surface of the slider 2 that is a "base member”
  • the carriage C2 is fixed to the rear surface of the saddle 3 that is a "moving body”.
  • the ball screw mechanism BS2 drives the saddle 3 with respect to the slider 2.
  • the ball screw mechanism BS2 includes a screw shaft S2, a nut N2, and a screw shaft holder B2.
  • the screw shaft S2 is arranged along the X-axis direction.
  • the screw shaft holder B2 includes first and second bearing bracket units B2a that are spaced apart along the screw shaft S2 (see FIG. 5).
  • Each bearing bracket unit B2a includes one or a plurality of rolling bearings and a bracket that supports the rolling bearings.
  • the first and second bearing bracket units B2a can support both ends of the screw shaft S2, for example.
  • the screw shaft holder B2 is fixed to the front surface of the slider 2.
  • the screw shaft holder B2 may include only one bearing bracket unit B2a (eg, the screw shaft S2 may be cantilevered).
  • the nut N2 moves along the screw shaft S2.
  • the nut N2 is fixed to the rear surface of the saddle 3.
  • the motor M2 is connected to one end of the screw shaft S2.
  • the nut N2 and the saddle 3 move along the X-axis direction as the screw shaft S2 is rotated by the motor M2.
  • the feeding of the saddle 3 in the X-axis direction is controlled by the NC device.
  • the ram 4 is attached to the front surface of the saddle 3.
  • the ram 4 is driven on the saddle 3 along the Z-axis direction by the feeder FS3. That is, in the relationship between the saddle 3 and the ram 4, the saddle 3 serves as a “base member” and the ram 4 serves as a “moving body”.
  • the feeding device FS3 includes one or a plurality (a pair in the present embodiment) of the linear motion rolling guide L3, a ball screw mechanism BS3, and a motor M3.
  • the linear motion rolling guide L3 is arranged between the saddle 3 and the ram 4, and guides the movement of the ram 4 with respect to the saddle 3.
  • Each of the linear motion rolling guides L3 includes a rail R3 and one or more (a pair in the present embodiment) carriages C3.
  • the rails R1 and R2 are fixed to the "base member” and the carriages C1 and C2 are fixed to the "moving body", while in the feeder FS3, the rail R3 is fixed. Is fixed to the rear surface of the ram 4, which is the "moving body", and the carriage C3 is fixed to the front surface of the saddle 3, which is the "base member".
  • the ball screw mechanism BS3 drives the ram 4 with respect to the saddle 3.
  • the ball screw mechanism BS3 can include a screw shaft (not shown) arranged along the Z-axis direction, a nut (not shown) fixed to the ram 4, and a screw shaft holder B3. ..
  • the screw shaft holder B3 includes first and second bearing bracket units B3a arranged apart from each other along the screw shaft (only one bearing bracket unit B3a is shown in the figure).
  • Each bearing bracket unit B3a includes one or a plurality of rolling bearings and a bracket that supports the rolling bearings.
  • the first and second bearing bracket units B3a can support both ends of the screw shaft, for example.
  • the screw shaft holder B3 is fixed to the front surface of the saddle 3. In other embodiments, the screw shaft holder B3 may include only one bearing bracket unit B3a (eg, the screw shaft may be supported cantilevered).
  • the motor M3 is connected to one end of the screw shaft.
  • the nut of the ball screw mechanism BS3 can be configured similar to the nuts N1, N2 of the ball screw mechanisms BS1, BS2 described above, whereby the nut and ram 4 are rotated as the screw shaft is rotated by the motor M3. , Can be moved along the Z-axis direction. The feeding of the ram 4 in the Z-axis direction is controlled by the NC device.
  • FIGS. 4 and 5 are an enlarged side view and an enlarged front view showing the feeding device FS2, respectively. It should be noted that some components (for example, the saddle 3 and the nut N2) are omitted in FIGS. 4 and 5 for easy understanding.
  • a CFRP (Carbon Fiber Reinforced Plastic) material 50 is sandwiched between the screw shaft holder B2 and the slider 2.
  • the CFRP material 50 is spread over the range including the first and second bearing bracket units B2a.
  • the CFRP material 50 is a single plate and has a size capable of covering substantially the entire front surface of the slider 2.
  • the CFRP material 50 is spread between the first and second bearing bracket units B2a without any gap.
  • the CFRP material 50 of FIG. 5 may be divided into multiple plates.
  • the CFRP material 50 may be arranged only directly below each of the first and second bearing bracket units B2a. In this case, there is a space where the CFRP material is not arranged between the first and second bearing bracket units B2a.
  • CFRP material 50 includes a plurality of layers. Each layer contains carbon fibers along a predetermined direction. Specifically, the plurality of layers are laminated such that the orientation 51 of the carbon fibers is ⁇ 45° with respect to the moving direction (X-axis direction) of the saddle 3.
  • the CFRP material 50 can be fixed to the slider 2 with a plurality of bolts 52, for example.
  • the screw shaft holder B2 can be fixed to the slider 2 together with the CFRP material 50 by a plurality of bolts 53.
  • An adhesive may be further used between the slider 2 and the CFRP material 50 and between the CFRP material 50 and the screw shaft holder B2.
  • CFRP material 50 for example, thickness, elastic modulus such as Young's modulus, strength such as tensile strength, matrix resin type, carbon fiber type, and carbon fiber content
  • CFRP material 50 Various specifications of the CFRP material 50 (for example, thickness, elastic modulus such as Young's modulus, strength such as tensile strength, matrix resin type, carbon fiber type, and carbon fiber content) are, for example, the CFRP material 50. It can be appropriately determined in consideration of various factors such as the load applied to the. These specifications are, for example, a thickness (for example, 1 to 5 mm) that does not excessively reduce static rigidity in accordance with the design specifications of the machine feed axis, a highly damped orientation in a specific direction (for example, 0°, 90°), and Young's modulus. It is possible to use a thermosetting resin having a high temperature.
  • the CFRP material 60 is also sandwiched between the linear motion rolling guide L2 and the slider 2. Specifically, in the feeder FS2, the CFRP material 60 is sandwiched between the rail R2 and the slider 2.
  • the CFRP material 60 can be, for example, a single plate, and can have a size that extends over substantially the entire length of the rail R2. Alternatively, the CFRP material 60 may be divided into multiple plates.
  • the CFRP material 60 includes a plurality of layers, and the orientation of the carbon fibers of the CFRP material 60 in the plurality of layers is with respect to the moving direction (X axis direction) of the saddle 3. It is laminated so that the angle is ⁇ 45°.
  • the rail R2 can be fixed to the slider 2 together with the CFRP material 60 (not shown in FIG. 5) by a plurality of bolts 54, for example.
  • An adhesive may be further used between the slider 2 and the CFRP material 60 and between the CFRP material 60 and the rail R2.
  • Various specifications of the CFRP material 60 can be appropriately determined in consideration of various factors such as a load applied to the CFRP material 60, and can be the same as the CFRP material 50, for example.
  • FIG. 6 is a sectional view taken along the line VI-VI in FIG. It should be noted that some components (for example, the motor M2 and the like) are omitted in FIG. 6 for easy understanding.
  • FIG. 6 shows a state in which the saddle 3 stops moving to the right. In this state, due to inertia, a moment acts on the saddle 3 so as to rotate the saddle 3 clockwise. Therefore, a downward force F1 acts on the right carriage C2, and a reverse reaction force RF1 acts on the slider 2. An upward force F2 acts on the left carriage C2, and a reverse reaction force RF2 acts on the slider 2.
  • Inertia force F3, F4 acts on the first and second bearing bracket units B2a from the saddle 3 via the nut N2 and the screw shaft S2, respectively, and the slider 2 receives the reaction forces RF3, RF4 in the opposite directions.
  • the reaction forces RF1, RF2, RF3, and RF4 as described above can generate vibration of the slider 2.
  • the reaction forces RF3 and RF4 act directly on the slider 2 in the X-axis direction via the ball screw mechanism BS2 and easily cause large displacement vibration of the slider 2 at a low frequency. It will be understood that the reaction force in the opposite direction to the reaction forces RF1, RF2, RF3, RF4 acts on the slider 2 when the saddle 3 starts to move to the right.
  • the reaction force as described above acts on the slider 2 when the saddle 3 starts or stops moving in the X-axis direction.
  • the vibration of the slider 2 caused by such a reaction force does not affect the quality of the machined surface of the work in the case of fast-forwarding or idle cutting in which the tool attached to the spindle 6 is not in contact with the work.
  • the saddle 3 may start or stop the movement in the X-axis direction when the tool attached to the spindle 6 is in contact with the workpiece (for example, the X-axis by the end mill and the X-axis).
  • Corner processing including movement in the Y-axis direction, and scan processing including movement in the X-axis and Z-axis directions by a ball end mill and repeating pick feed in the Y-axis direction).
  • the vibration of the slider 2 caused by the reaction force may affect the quality of the machined surface of the work.
  • the present inventor inserts the CFRP material 50 between the screw shaft holder B2 and the slider 2 and the CFRP material 60 between the rail R2 and the slider 2.
  • the vibration of the slider 2 due to the reaction forces RF1, RF2, RF3, RF4 as described above can be reduced by the CFRP materials 50, 60.
  • FIG. 7 is a graph showing an example of experimental results.
  • the horizontal axis represents frequency and the vertical axis represents amplitude.
  • the condition Cn1 in which the CFRP materials 50 and 60 are provided and the condition Cn2 in which the CFRP materials 50 and 60 are not provided each have a large peak at about 30 Hz.
  • the peak under the condition Cn1 is reduced from the peak under the condition Cn2 due to the presence of the CFRP materials 50 and 60. This result also shows that the CFRP materials 50 and 60 can reduce the vibration displacement in question.
  • the CFRP material 50 is sandwiched between the screw shaft holder B2 of the ball screw mechanism BS2 and the slider 2.
  • the present inventor inserts the CFRP material 50 at the location to prevent the saddle 3 from moving or stopping when the saddle 3 starts to move in the X-axis direction without changing the material of the slider 2 or the saddle 3. It has been found that the vibration displacement of the slider 2 due to the forces RF1, RF2, RF3, RF4 can be reduced. Therefore, the vibration displacement of the slider 2 can be reduced while maintaining high static rigidity.
  • the CFRP material 60 is sandwiched between the rail R2 of the linear motion rolling guide L2 and the slider 2. Therefore, the vibration displacement of the slider 2 can be further reduced.
  • the screw shaft holder B2 includes the first and second bearing bracket units B2a that are spaced apart along the screw shaft S2, and in the embodiment of FIG. 5, the CFRP material 50 is , And the first and second bearing bracket units B2a. Therefore, the CFRP material is spread without gaps between the first and second bearing bracket units B2a, and the vibration displacement of the slider 2 can be further reduced.
  • the CFRP material 50 includes a plurality of layers each containing a carbon fiber along a predetermined direction, and in the plurality of layers, the orientation 51 of the carbon fibers is the moving direction of the saddle 3 ( The layers are laminated so that the angle is ⁇ 45° with respect to the (X-axis direction). Therefore, the CFRP material 50 has high rigidity in all directions in the XZ plane including the moving direction of the saddle 3.
  • the slider 2 is made of aluminum alloy. Therefore, the weight of the slider 2 and thus the entire machine tool 100 can be reduced.
  • lightweight metal materials such as aluminum alloys can be used.
  • CFRP is a lightweight and highly rigid material
  • the vibration damping behaviors of aluminum alloy and CFRP are shown in FIGS. 8(a) and 8(b), respectively. Since the period of the damping behavior depends on the natural frequency, a material having a high natural frequency also has high vibration damping performance. Therefore, in the moving body sandwiching the CFRP material, vibration due to inertial force when starting and stopping is suppressed.
  • CFRP materials 50 and 60 are used only for the feeding device FS2.
  • CFRP material may alternatively or additionally be used in the feeder FS1 and/or the feeder FS3.
  • the slider 2 serves as a “moving body” that moves in a predetermined direction (Y-axis direction), and the bed 1 is It functions as a "base member” that supports the moving body.
  • the CFRP material can be sandwiched between the bed 1 and the screw shaft holder B1. Further, the CFRP material may be sandwiched between the bed 1 and the rail R1. In this case, the vibration displacement of the bed 1 due to the reaction force when the slider 2 starts or stops the movement in the Y-axis direction can be reduced.
  • the ram 4 serves as a “moving body” that moves in a predetermined direction (Z-axis direction), and the saddle 3 serves as a “base member” that supports the moving body. Play a role.
  • the CFRP material can be sandwiched between the saddle 3 and the screw shaft holder B3. Further, the CFRP material may be sandwiched between the saddle 3 and the carriage C3. In this case, the vibration displacement of the saddle 3 due to the reaction force when the ram 4 starts or stops the movement in the Z-axis direction can be reduced.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machine Tool Units (AREA)
  • Bearings For Parts Moving Linearly (AREA)
  • Transmission Devices (AREA)
  • Auxiliary Devices For Machine Tools (AREA)

Abstract

L'invention concerne un dispositif d'alimentation (FS2) comprenant : un guide de roulement à mouvement linéaire (L2), disposé entre un élément de base (2) et un corps mobile (3), servant à guider un mouvement du corps mobile (3) par rapport à l'élément de base (2) ; et un mécanisme de vis à billes (BS2) servant à entraîner le corps mobile (3) par rapport à l'élément de base (2). Le mécanisme de vis à billes (BS2) comporte un arbre de vis (S2), un écrou (N2) qui se déplace le long de l'arbre de vis (S2), et un support d'arbre de vis (B2) qui est fixé à l'élément de base (2) et qui soutient l'arbre de vis (S2). Un matériau CFRP (50) est maintenu entre le support d'arbre de vis (B2) et l'élément de base (2).
PCT/JP2020/000919 2019-01-18 2020-01-14 Dispositif d'alimentation d'une machine-outil WO2020149268A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112020000272.1T DE112020000272T5 (de) 2019-01-18 2020-01-14 Vorschubvorrichtung für eine Werkzeugmaschine
CN202080008407.2A CN113272098B (zh) 2019-01-18 2020-01-14 机床的进给装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019007016A JP7113431B2 (ja) 2019-01-18 2019-01-18 工作機械の送り装置
JP2019-007016 2019-01-18

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WO2020149268A1 true WO2020149268A1 (fr) 2020-07-23

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CN (1) CN113272098B (fr)
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WO (1) WO2020149268A1 (fr)

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KR20220102274A (ko) 2021-01-13 2022-07-20 주식회사 디엔솔루션즈 공작기계 이송계의 진동저감 장치
WO2023079355A1 (fr) * 2021-11-05 2023-05-11 Promac Srl Système de transmission motorisé à arbre à vis et écrou de vis-mère avec des billes en recirculation

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