CN111618612A - Three-axis machine tool and control method thereof - Google Patents

Three-axis machine tool and control method thereof Download PDF

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Publication number
CN111618612A
CN111618612A CN202010502764.6A CN202010502764A CN111618612A CN 111618612 A CN111618612 A CN 111618612A CN 202010502764 A CN202010502764 A CN 202010502764A CN 111618612 A CN111618612 A CN 111618612A
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CN
China
Prior art keywords
shaft assembly
axis
assembly
machine tool
controller
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CN202010502764.6A
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Chinese (zh)
Inventor
朱开峰
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Feichuang Linear Module Suzhou Co ltd
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Feichuang Linear Module Suzhou Co ltd
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Priority to CN202010502764.6A priority Critical patent/CN111618612A/en
Publication of CN111618612A publication Critical patent/CN111618612A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, 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
    • B23Q1/00Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25Movable or adjustable work or tool supports
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, 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
    • B23Q5/00Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22Feeding members carrying tools or work

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Control Of Machine Tools (AREA)

Abstract

The invention provides a three-axis machine tool and a control method thereof, and relates to the technical field of machine tools. The three-axis machine tool comprises a base, X, Y, Z three-axis components and a controller; the Y shaft assembly is arranged on the base, the Z shaft assembly is arranged on the Y shaft assembly, and the X shaft assembly is arranged on the Z shaft assembly; the three-axis components are all provided with magnetic grid rulers which can measure the actual displacement of the three-axis components; a plurality of magnetic grid chi all is connected with the controller, and the triaxial subassembly all is connected with the controller. The control method of the three-axis machine tool comprises the steps that a controller three-axis component sends out respective preset displacement values; the three components of the three-axis component move under the driving of a power part of the three components; the magnetic grid ruler on the triaxial assembly feeds back respective actual displacement values to the controller; and the controller compares the actual displacement value with the preset displacement value, if the actual displacement value is the same as the preset displacement value, the operation is terminated, and if the actual displacement value is different from the preset displacement value, the controller sends respective compensation displacement to the triaxial assembly until the actual displacement value is the same as the preset displacement value. The technical effect of high processing precision is achieved.

Description

Three-axis machine tool and control method thereof
Technical Field
The invention relates to the technical field of machine tools, in particular to a three-axis machine tool and a control method thereof.
Background
The machining precision is the most important index of the numerical control machine tool and the index with the characteristics of the machine tool. The machining precision is directly determined by the precision value and the stability of the machine tool precision. The precision stability of the three-axis numerical control machine tool is directly related to the precision change of the machine tool, the consistency of a processed product can be determined, and the normal service cycle of the machine tool can be influenced more directly. On the one hand, factors influencing the machining precision and the stability of the machine tool are various. In the design and manufacturing process of the machine tool, due to unreasonable design and improper assembly stress generated in assembly, the deformation and excessive abrasion of the basic parts of the machine tool in the service process of the machine tool can cause the rapid decline of single or multiple precision indexes of the machine tool, cause the poor machining consistency of parts in the same batch, even cause the machining precision of the machined parts not to reach the standard, and generate waste parts. On the other hand, the accuracy of the numerical control machine tool is not only various (straightness, verticality, parallelism, positioning accuracy and the like), but also different accuracy items have different influence degrees on the machining performance of the machine tool.
Therefore, it is an important technical problem to be solved by those skilled in the art to provide a three-axis machine tool with high machining accuracy and a control method thereof.
Disclosure of Invention
The invention aims to provide a three-axis machine tool and a control method thereof, which are used for relieving the technical problem of low machining precision in the prior art.
In a first aspect, an embodiment of the present invention provides a three-axis machine tool, including a base, an X-axis assembly, a Y-axis assembly, a Z-axis assembly, and a controller;
the Y shaft assembly is arranged on the base, the Z shaft assembly is arranged on the Y shaft assembly, and the X shaft assembly is arranged on the Z shaft assembly;
magnetic grid rulers are arranged on the X shaft assembly, the Y shaft assembly and the Z shaft assembly, and can measure the actual displacement of the X shaft assembly, the Y shaft assembly and the Z shaft assembly;
the magnetic grid ruler is connected with the controller, and the X shaft assembly, the Y shaft assembly and the Z shaft assembly are connected with the controller.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, where the plurality of magnetic scale bars include a first magnetic scale bar disposed on the Y-axis assembly, a second magnetic scale bar disposed on the Z-axis assembly, and a third magnetic scale bar disposed on the X-axis assembly.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the Y-axis assembly includes a linear motor, a first substrate, a first guide rail, and a first working platform;
the first substrate is arranged on the base, the linear motor and the first guide rail are arranged on the first substrate, the first working platform is arranged on the linear motor, and the first working platform can slide along the first guide rail;
the magnetic strip of the first magnetic grid ruler is arranged on the linear motor, and the reading head of the first magnetic grid ruler is arranged on the first working platform.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the Z-axis assembly includes a first lead screw mechanism, a second substrate, a second guide rail, and a second working platform;
the second base plate is arranged on the first working platform, the first lead screw mechanism and the second guide rail are both arranged on the second base plate, the second working platform is arranged on the first lead screw mechanism, and the second working platform can slide along the second guide rail;
the magnetic strip of the second magnetic grid ruler is arranged on the second substrate, and the reading head of the second magnetic grid ruler is arranged on the second working platform.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, where the first lead screw mechanism includes a power component, a lead screw nut, a mounting seat, and an adjusting ring;
the lead screw passes through the mount pad setting and is in on the second base plate, adjustable ring thread cover is established on the lead screw, just the adjustable ring can with the mount pad butt of top, thereby eliminate lead screw nut with clearance between the lead screw.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the X-axis assembly includes a second lead screw mechanism, a third base plate, a third guide rail, and a third working platform;
the third substrate is arranged on the second working platform, the second lead screw mechanism and the third guide rail are both arranged on the third substrate, the third working platform is arranged on the second lead screw mechanism, and the third working platform can slide along the third guide rail;
the magnetic strip of the third magnetic grid ruler is arranged on the third substrate, and the reading head of the third magnetic grid ruler is arranged on the third working platform.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein a tool is disposed on the third working platform.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the X-axis assembly, the Y-axis assembly, and the Z-axis assembly are respectively provided with a photo gate sensor for limiting a position of a near point and a position of a far point.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein an anti-collision block is disposed on the first substrate.
In a second aspect, the present invention provides a method for controlling a three-axis machine tool, comprising the steps of: the controller sends respective preset displacement values to the X shaft assembly, the Y shaft assembly and the Z shaft assembly;
the X shaft assembly, the Y shaft assembly and the Z shaft assembly move under the driving of a power part of the X shaft assembly, the Y shaft assembly and the Z shaft assembly;
the magnetic grid rulers on the X shaft assembly, the Y shaft assembly and the Z shaft assembly feed back respective actual displacement values to the controller;
and the controller compares the actual displacement value with the preset displacement value, if the actual displacement value is the same as the preset displacement value, the process is terminated, and if the actual displacement value is different from the preset displacement value, the controller sends respective compensation displacement to the X shaft assembly, the Y shaft assembly and/or the Z shaft assembly until the actual displacement value is the same as the preset displacement value.
Has the advantages that:
the embodiment of the invention provides a three-axis machine tool, which comprises a base, an X-axis assembly, a Y-axis assembly, a Z-axis assembly and a controller, wherein the base is provided with a plurality of X-axis holes; the Y shaft assembly is arranged on the base, the Z shaft assembly is arranged on the Y shaft assembly, and the X shaft assembly is arranged on the Z shaft assembly; magnetic grid rulers are arranged on the X shaft assembly, the Y shaft assembly and the Z shaft assembly and can measure the actual displacement of the X shaft assembly, the Y shaft assembly and the Z shaft assembly; a plurality of magnetic grid chi all is connected with the controller, and X axle subassembly, Y axle subassembly and Z axle subassembly all are connected with the controller.
Particularly, when in use, the controller can send respective preset displacement value signals to the X shaft assembly, the Y shaft assembly and the Z shaft assembly, then the X shaft assembly, the Y shaft assembly and the Z shaft assembly move, after the X shaft assembly, the Y shaft assembly and the Z shaft assembly move, the magnetic scale on the X shaft assembly, the Y shaft assembly and the Z shaft assembly can feed back the respective actual displacement values of the X shaft assembly, the Y shaft assembly and the Z shaft assembly to the controller, then the controller compares and judges the actual displacement value and the preset displacement value signal, if the actual displacement value and the preset displacement value are the same, the X shaft assembly, the Y shaft assembly and the Z shaft assembly are moved completely, if not, respectively sending compensation displacement signals to the X shaft assembly, the Y shaft assembly and the Z shaft assembly, the accurate displacement of the X shaft assembly, the Y shaft assembly and the Z shaft assembly can be completed through the arrangement, so that the machining precision of the three-shaft machine tool is improved.
The invention provides a three-axis machine tool control method, which comprises the following steps: the controller sends respective preset displacement values to the X shaft assembly, the Y shaft assembly and the Z shaft assembly; the X shaft assembly, the Y shaft assembly and the Z shaft assembly move under the driving of a power part of the X shaft assembly, the Y shaft assembly and the Z shaft assembly; the magnetic grid rulers on the X shaft assembly, the Y shaft assembly and the Z shaft assembly feed back respective actual displacement values to the controller; and the controller compares the actual displacement value with a preset displacement value, if the actual displacement value is the same as the preset displacement value, the process is terminated, and if the actual displacement value is different from the preset displacement value, the controller sends respective compensation displacement to the X shaft assembly, the Y shaft assembly and/or the Z shaft assembly until the actual displacement value is the same as the preset displacement value. The three-axis machine tool control method has the advantages compared with the prior art, and the detailed description is omitted here.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a first implementation of a three-axis machine tool according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a second implementation of a three-axis machine tool according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of a method for controlling a three-axis machine tool according to an embodiment of the present invention.
Icon:
100-a base;
200-X shaft assembly; 210-a second lead screw mechanism; 220-a third substrate; 230-a third guide rail; 240-a third work platform;
a 300-Y shaft assembly; 310-a linear motor; 320-a first substrate; 330-a first guide rail; 340-a first work platform;
a 400-Z shaft assembly; 410-a first lead screw mechanism; 411-a mount; 412-adjustment ring; 420-a second substrate; 430-a second guide rail;
500-a controller.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Referring to fig. 1, 2 and 3, the present embodiment provides a three-axis machine tool including a base 100, an X-axis assembly 200, a Y-axis assembly 300, a Z-axis assembly 400 and a controller 500; the Y-axis assembly 300 is arranged on the base 100, the Z-axis assembly 400 is arranged on the Y-axis assembly 300, and the X-axis assembly 200 is arranged on the Z-axis assembly 400; magnetic grid rulers are arranged on the X shaft assembly 200, the Y shaft assembly 300 and the Z shaft assembly 400 and can measure the actual displacement of the X shaft assembly 200, the Y shaft assembly 300 and the Z shaft assembly 400; the plurality of magnetic grid rulers are all connected with the controller 500, and the X shaft assembly 200, the Y shaft assembly 300 and the Z shaft assembly 400 are all connected with the controller 500.
Specifically, when the displacement compensation device is used, the controller 500 sends respective preset displacement value signals to the X shaft assembly 200, the Y shaft assembly 300 and the Z shaft assembly 400, then the X shaft assembly 200, the Y shaft assembly 300 and the Z shaft assembly 400 move, after the X shaft assembly 200, the Y shaft assembly 300 and the Z shaft assembly 400 move, the magnetic scale rulers on the X shaft assembly 200, the Y shaft assembly 300 and the Z shaft assembly 400 feed back respective actual displacement values of the X shaft assembly 200, the Y shaft assembly 300 and the Z shaft assembly 400 to the controller 500, then the controller 500 compares and judges the actual displacement values with the preset displacement value signals, if the actual displacement values are the same as the preset displacement value signals, the movement of the X shaft assembly 200, the Y shaft assembly 300 and the Z shaft assembly 400 is completed, if the actual displacement values are different, the compensation displacement signals are correspondingly sent to the X shaft assembly 200, the Y shaft assembly 300 and the Z shaft assembly 400, and the, Accurate displacement of the Y-axis assembly 300 and the Z-axis assembly 400, thereby improving the machining accuracy of the three-axis machine tool.
Referring to fig. 1 and 2, in an alternative to the present embodiment, the plurality of magnetic scales includes a first magnetic scale disposed on the Y-axis assembly 300, a second magnetic scale disposed on the Z-axis assembly 400, and a third magnetic scale disposed on the X-axis assembly 200.
Specifically, all be provided with the magnetic grid chi on X axle subassembly 200, Y axle subassembly 300 and Z axle subassembly 400, at the during operation, feed back X axle subassembly 200, Y axle subassembly 300 and Z axle subassembly 400 three's actual displacement value through the magnetic grid chi, improve the machining precision of triaxial lathe, eliminate assembly error or other errors to the harmful effects of processing work piece.
Referring to fig. 1 and 2, in an alternative of the present embodiment, a Y-axis assembly 300 includes a linear motor 310, a first base plate 320, a first guide rail 330, and a first work platform 340; the first substrate 320 is disposed on the base 100, the linear motor 310 and the first guide rail 330 are disposed on the first substrate 320, the first working platform 340 is disposed on the linear motor 310, and the first working platform 340 can slide along the first guide rail 330; the magnetic stripe of the first magnetic grid ruler is arranged on the linear motor 310, and the reading head of the first magnetic grid ruler is arranged on the first working platform 340.
Specifically, the linear motor 310 is disposed on the first substrate 320, the linear motor 310 can drive the first working platform 340 to move, and the first working platform 340 is guided by the first guide rail 330.
Wherein, the magnetic stripe setting of first magnetic grid chi is on linear electric motor 310's lateral wall, and the reading head setting of first magnetic grid chi is in the bottom surface of first work platform 340, and the reading head can move with the magnetic stripe contact work, and when linear electric motor 310 drove first work platform 340 and removed, the reading head can remove the magnetic stripe relatively to accomplish reading work.
Referring to fig. 1 and 2, in an alternative of the present embodiment, a Z-axis assembly 400 includes a first lead screw mechanism 410, a second base plate 420, a second guide rail 430, and a second work platform; the second substrate 420 is arranged on a second working platform, the first lead screw mechanism 410 and the second guide rail 430 are both arranged on the second substrate 420, the second working platform is arranged on the first lead screw mechanism 410, and the second working platform can slide along the second guide rail 430; the magnetic stripe of the second magnetic grid ruler is arranged on the second substrate 420, and the reading head of the second magnetic grid ruler is arranged on the second working platform.
Specifically, the first screw mechanism 410 is disposed on the second substrate 420, the first screw mechanism 410 can drive the second working platform to move, and the second working platform is guided by the second guide rail 430.
Wherein, the magnetic stripe setting of second magnetic grid chi is on second base plate 420, and the reading head setting of second magnetic grid chi is in second work platform's bottom surface, and the reading head can contact work with the magnetic stripe, and when first screw mechanism 410 drove second work platform and removed, the reading head can remove the magnetic stripe relatively to accomplish reading work.
Referring to fig. 1 and 2, in an alternative of the present embodiment, the first lead screw mechanism 410 includes a power member, a lead screw nut, a mounting seat 411 and an adjusting ring 412; the lead screw is arranged on the second base plate 420 through the mounting seat 411, the adjusting ring 412 is sleeved on the lead screw in a threaded manner, and the adjusting ring 412 can be abutted to the mounting seat 411 at the top, so that a gap between the lead screw nut and the lead screw is eliminated.
Specifically, through the setting of adjustable ring 412, can adjust the pretightning force between lead screw and the screw nut to eliminate the clearance between lead screw and the screw nut, further improve the precision.
Wherein, the lead screw and the lead screw nut of Z axle subassembly 400 are vertical to be placed, and the lead screw nut receives gravity to have the trend of downward movement, consequently through adjusting adjustable ring 412, can adjust the pretightning force between lead screw and the lead screw nut to eliminate the clearance between lead screw and the lead screw nut.
Referring to fig. 1 and 2, in an alternative of the present embodiment, the X-axis assembly 200 includes a second lead screw mechanism 210, a third base plate 220, a third guide rail 230, and a third work platform 240; the third substrate 220 is disposed on the second working platform, the second screw mechanism 210 and the third guide rail 230 are both disposed on the third substrate 220, the third working platform 240 is disposed on the second screw mechanism 210, and the third working platform 240 can slide along the third guide rail 230; the magnetic stripe of the third magnetic grid ruler is arranged on the third substrate 220, and the reading head of the third magnetic grid ruler is arranged on the third working platform 240.
Specifically, the second screw mechanism 210 is disposed on the second substrate 420, the second screw mechanism 210 can drive the third working platform 240 to move, and the third working platform 240 is guided by the third guide rail 230.
Wherein, the magnetic stripe setting of third magnetic grid chi is on third base plate 220, and the reading head setting of third magnetic grid chi is in the bottom surface of third work platform 240, and the reading head can move with the magnetic stripe contact work, and when second screw mechanism 210 drove third work platform 240 and removed, the reading head can remove the magnetic stripe relatively to accomplish reading work.
In an alternative of this embodiment, a tool is provided on the third work platform 240.
Specifically, a tool may be disposed on the third working platform 240, and the workpiece to be processed is processed by the tool.
Referring to fig. 1 and 2, in an alternative of the present embodiment, the X-axis assembly 200, the Y-axis assembly 300 and the Z-axis assembly 400 are all provided with a photo gate sensor for limiting the positions of the near point and the far point.
Specifically, the maximum stroke of the X-axis assembly 200, the Y-axis assembly 300, and the Z-axis assembly 400 can be limited by the arrangement of the photogate sensor.
In an alternative of this embodiment, an anti-collision block is provided on the first substrate 320.
Specifically, the first substrate 320 is provided with an anti-collision block to prevent the linear motor 310 from colliding with both ends of the first substrate 320.
Specifically, the three-axis machine tool provided by the embodiment can be provided with two groups of the X-axis assembly 200, the Y-axis assembly 300 and the Z-axis assembly 400 on the base 100, so as to form two three-axis assemblies, and a positioning tool is arranged between the two three-axis assemblies; during production, a workpiece to be machined is fixed on the positioning tool of the base 100, the first three-axis component and the second three-axis component which are positioned on two sides of the positioning tool drive the corresponding cutter components to machine two different side walls of the workpiece to be machined, the workpiece to be machined does not need to be fixed and positioned again, relative errors in machining of two sides of the workpiece to be machined are reduced, and machining precision is improved.
In the triaxial system of prior art, add two different lateral walls of same work piece and add man-hour, need wait to process work piece fixed positioning earlier, process one of its lateral wall, then will wait to process the work piece and dismantle, fix a position again, then process another lateral wall, such course of working is troublesome, even adopt the monitoring sensing device that the required precision is high to monitor, also can influence the relative precision of processing position on two lateral walls. The triaxial lathe that this embodiment provided is at the during operation, will wait to process work piece fixed positioning back on the location frock of base 100, can drive the stage property subassembly that corresponds with the first triaxial subassembly that waits to process the work piece first side wall and carry out the processing work, the second triaxial subassembly that corresponds with waiting to process the work piece second side wall also can drive the stage property subassembly that corresponds and carry out the processing work simultaneously, the processing work of two lateral walls can be accomplished through a fixed positioning to the work piece of waiting to process, and the processing work of two lateral walls does not influence each other, and, two lateral walls of waiting to process the work piece begin the processing work simultaneously in carrying out the course of working, can shorten original process time more than half, very big improvement work efficiency.
Referring to fig. 3, the present invention provides a three-axis machine tool control method, including the following steps: the controller 500 sends respective preset displacement values to the X-axis assembly 200, the Y-axis assembly 300 and the Z-axis assembly 400; the X shaft assembly 200, the Y shaft assembly 300 and the Z shaft assembly 400 move under the driving of power parts of the X shaft assembly, the Y shaft assembly 300 and the Z shaft assembly 400; the magnetic grid rulers on the X-axis assembly 200, the Y-axis assembly 300 and the Z-axis assembly 400 feed back respective actual displacement values to the controller 500; the controller 500 compares the actual displacement value to the preset displacement value and terminates if the actual displacement value is the same, and if the actual displacement value is not the same, the controller 500 issues respective compensating displacements to the X-axis assembly 200, the Y-axis assembly 300, and/or the Z-axis assembly 400 until the actual displacement value is the same as the preset displacement value.
It should be noted that, the prior art is adopted for connection between the power parts of the X-axis assembly 200, the Y-axis assembly 300 and the Z-axis assembly 400 and the controller 500, as long as the power parts of the X-axis assembly 200, the Y-axis assembly 300 and the Z-axis assembly 400 can receive signals of the controller 500; the connection between the controller 500 and the magnetic grid ruler also adopts the prior art, as long as the controller 500 can receive the signal fed back by the magnetic grid ruler; the power components of the controller 500 and the X-axis assembly 200, the Y-axis assembly 300 and the Z-axis assembly 400, and the circuit diagram of the magnetic grid ruler are implemented by the prior art, and are not described herein again.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A three-axis machine tool, comprising: the device comprises a base (100), an X shaft assembly (200), a Y shaft assembly (300), a Z shaft assembly (400) and a controller (500);
the Y-axis assembly (300) is arranged on the base (100), the Z-axis assembly (400) is arranged on the Y-axis assembly (300), and the X-axis assembly (200) is arranged on the Z-axis assembly (400);
magnetic grid rulers are arranged on the X shaft assembly (200), the Y shaft assembly (300) and the Z shaft assembly (400), and can measure the actual displacement of the X shaft assembly (200), the Y shaft assembly (300) and the Z shaft assembly (400);
the magnetic grid rulers are all connected with the controller (500), and the X-axis assembly (200), the Y-axis assembly (300) and the Z-axis assembly (400) are all connected with the controller (500).
2. The three-axis machine tool of claim 1, wherein the plurality of magnetic scales includes a first magnetic scale disposed on the Y-axis assembly (300), a second magnetic scale disposed on the Z-axis assembly (400), and a third magnetic scale disposed on the X-axis assembly (200).
3. The three-axis machine tool of claim 2, wherein the Y-axis assembly (300) comprises a linear motor (310), a first base plate (320), a first guide rail (330), and a first work platform (340);
the first substrate (320) is arranged on the base (100), the linear motor (310) and the first guide rail (330) are arranged on the first substrate (320), the first working platform (340) is arranged on the linear motor (310), and the first working platform (340) can slide along the first guide rail (330);
the magnetic strip of the first magnetic grid ruler is arranged on the linear motor (310), and the reading head of the first magnetic grid ruler is arranged on the first working platform (340).
4. The three-axis machine tool of claim 3, wherein the Z-axis assembly (400) comprises a first lead screw mechanism (410), a second base plate (420), a second guide rail (430), and a second work platform;
the second base plate (420) is arranged on the first working platform (340), the first lead screw mechanism (410) and the second guide rail (430) are both arranged on the second base plate (420), the second working platform is arranged on the first lead screw mechanism (410), and the second working platform can slide along the second guide rail (430);
the magnetic strip of the second magnetic grid ruler is arranged on the second substrate (420), and the reading head of the second magnetic grid ruler is arranged on the second working platform.
5. The three-axis machine tool according to claim 4, wherein the first screw mechanism (410) comprises a power member, a screw nut, a mounting seat (411) and an adjusting ring (412);
the lead screw passes through mount pad (411) and sets up on second base plate (420), adjustable ring (412) thread bush is established on the lead screw, just adjustable ring (412) can with mount pad (411) butt of the top, thereby eliminate lead screw nut with clearance between the lead screw.
6. The three-axis machine tool according to claim 5, wherein the X-axis assembly (200) comprises a second lead screw mechanism (210), a third base plate (220), a third guide rail (230) and a third work platform (240);
the third base plate (220) is arranged on the second working platform, the second lead screw mechanism (210) and the third guide rail (230) are arranged on the third base plate (220), the third working platform (240) is arranged on the second lead screw mechanism (210), and the third working platform (240) can slide along the third guide rail (230);
the magnetic strip of the third magnetic grid ruler is arranged on the third substrate (220), and the reading head of the third magnetic grid ruler is arranged on the third working platform (240).
7. Three-axis machine tool according to claim 6, wherein a tool is provided on the third work platform (240).
8. The three-axis machine tool according to any one of claims 1 to 7, wherein the X-axis assembly (200), the Y-axis assembly (300) and the Z-axis assembly (400) are each provided with a photo gate sensor for limiting the position of a near point and a far point.
9. Three-axis machine tool according to claim 3, characterised in that an anti-collision block is provided on the first base plate (320).
10. A three-axis machine tool control method is characterized by comprising the following steps: the controller (500) sends respective preset displacement values to the X shaft assembly (200), the Y shaft assembly (300) and the Z shaft assembly (400);
the X shaft assembly (200), the Y shaft assembly (300) and the Z shaft assembly (400) move under the driving of a power part of the X shaft assembly, the Y shaft assembly and the Z shaft assembly;
the magnetic grid ruler on the X-axis assembly (200), the Y-axis assembly (300) and the Z-axis assembly (400) feeds back respective actual displacement values to the controller (500);
the controller (500) compares the actual displacement value with the preset displacement value, if the actual displacement value and the preset displacement value are the same, the process is terminated, and if the actual displacement value and the preset displacement value are different, the controller (500) sends out respective compensation displacement to the X shaft assembly (200), the Y shaft assembly (300) and/or the Z shaft assembly (400) until the actual displacement value is the same as the preset displacement value.
CN202010502764.6A 2020-06-04 2020-06-04 Three-axis machine tool and control method thereof Pending CN111618612A (en)

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