CN212705431U - Double-nested thermally symmetrical machine tool structure - Google Patents
Double-nested thermally symmetrical machine tool structure Download PDFInfo
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- CN212705431U CN212705431U CN202020582745.4U CN202020582745U CN212705431U CN 212705431 U CN212705431 U CN 212705431U CN 202020582745 U CN202020582745 U CN 202020582745U CN 212705431 U CN212705431 U CN 212705431U
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Abstract
The invention relates to the technical field of numerical control machine tools, in particular to a double-nested thermally symmetrical machine tool structure. The technical scheme is as follows: the device comprises a cross beam, wherein a strip-shaped hole is formed in the center of the cross beam, four groups of Y-axis linear guide rails along the length direction of the strip-shaped hole are arranged on the edges of two sides of the upper surface and the lower surface of the strip-shaped hole, a left sliding plate and a right sliding plate are arranged on the upper surface and the lower surface of the strip-shaped hole in a crossing mode, a horizontal line rail sliding block is arranged on the edges of the two sides of the strip-shaped hole in a crossing mode, the left sliding plate and the right. The invention has the advantages that: the ram is nested in the cylindrical sliding plate, the cylindrical sliding plate is nested in the beam with the central square hole to form a double-nested structure, the nested structures are all encircling mounting structures formed by four linear rails, the structure rigidity is high, the stability is good, the structure unbalance loading problem is avoided, the linear rails are stressed uniformly, and the local transitional wear problem is avoided; the main body structure is symmetrically designed, so that the thermal symmetric arrangement is realized, and the precision retentivity of the machine tool is improved.
Description
Technical Field
The invention relates to the technical field of numerical control machine tools, in particular to a double-nested thermally symmetrical machine tool structure.
Background
With the development of the machine tool industry, the requirements on the rigidity, the thermal stability and the precision retentivity of the whole machine are continuously improved, and the structural form of the traditional machine tool also needs to be continuously optimized and upgraded. For its crossbeam, slide and ram subassembly, traditional mounting structure mostly is the form of side-hung unbalance loading (as fig. 5), and two parallel guide rails are arranged to the crossbeam quadrature promptly, and the slide is installed on the guide rail in the crossbeam front side to along guide rail side-to-side motion, the ram is installed on the perpendicular sliding guide face in slide front side, and along the guide face up-and-down motion. Compared with the cross beam, the weight of the moving part is offset at the front side of the cross beam, the lower guide rail at the front part of the cross beam is stressed and the abrasion of the lower guide rail of the cross beam is increased; compared with the slide plate, the weight of the front ram is forward, so that the stress of the press plate inclined iron at the lower part of the vertical sliding guide rail at the front side of the slide plate and the upper part of the front side of the slide plate is increased, and the abrasion of the corresponding guide rail surface is increased. In addition, the structure is only bilaterally symmetrical of the main body structure, the front main body structure and the rear main body structure are asymmetrical, and the moving part is offset to the front side, so that the moving part generates heat due to long-term movement to cause higher temperature rise at the front part of the main body, and the front part generates local thermal deformation to influence the precision of the whole machine. In conclusion, the traditional structure increases the local abrasion and reduces the service life of the machine tool; the local temperature rise is high, thermal deformation is easy to generate, and the method is an important factor influencing the long-term precision retentivity of the machine tool.
Disclosure of Invention
The invention aims to provide a double-nested thermally symmetrical machine tool structure, which realizes the front-back and left-right full symmetry of a machine tool main shaft and the front-back and left-right thermal symmetry of moving parts and solves the problem that the machining precision of a machine tool is influenced by the thermal deformation of the working temperature rise.
In order to achieve the purpose, the invention adopts the technical scheme that:
two nested thermal symmetry lathe structures, including crossbeam 1, the center of crossbeam 1 is rectangular shape hole, the both sides edge setting of rectangular shape hole upper and lower face is followed rectangular shape hole length direction's Y axle linear guide 5 four groups, it sets up left slide 2 and right slide 3 to cross rectangular shape hole upper and lower and both sides edge, left slide 2 and right slide 3 move on Y axle linear guide 5 through the setting of horizontal line rail slider, left slide 2 and right slide 3 relative crossbeam length direction's perpendicular symmetrical arrangement, the symmetrical arrangement of the relative crossbeam center horizontal plane of upper and lower part of left slide 2, the symmetrical arrangement of the relative crossbeam center horizontal plane of upper and lower part of right slide 3, set up square ram between left slide 2 and the right slide 3, square ram is equipped with Z axle linear guide 6 with left slide 2 and right slide 3 respectively.
Preferably, the connecting plate 11 is arranged at four butt joints of the left sliding plate 2 and the right sliding plate 3, the left sliding plate 2 and the right sliding plate 3 form a cylindrical sliding plate structure with an inner square hole through the connecting plate 11, a square ram 4 is embedded in the center square hole of the cylindrical sliding plate, four Z-axis linear guide rails 6 are arranged at four corners of the square ram 4, and the four Z-axis linear guide rails 6 move up and down in cooperation with vertical linear rail sliders on the left sliding plate 2 and the right sliding plate 3.
Preferably, the two Z-axis linear guide rails 6 are respectively connected with the left sliding plate 2 and the right sliding plate 3 as a group, the two Z-axis linear guide rails 6 in the same group are symmetrically arranged relative to the vertical plane of the center length direction of the long hole, and the two Z-axis linear guide rails 6 in the same group are symmetrically arranged relative to the vertical plane of the center between the left sliding plate 2 and the right sliding plate 3.
Preferably, the front side and the rear side of the ram are respectively provided with a balance oil cylinder 10, the upper part of the ram is connected with the ram 4 through a balance bracket 12, the lower part of the balance oil cylinder 10 is fixed on a connecting plate 11 between the left sliding plate 2 and the right sliding plate 3 through a flange, and the two balance oil cylinders are symmetrically arranged in front and back relative to the direction ram 4.
Preferably, the Z-axis left drive 8 and the Z-axis right drive 9 are respectively arranged above the left sliding plate 2 and the right sliding plate 3, the Z-axis left drive 8 and the Z-axis right drive 9 are symmetrically arranged left and right relative to the direction ram 4, and the Z-axis left drive 8 and the Z-axis right drive 9 simultaneously drive the direction ram 4 to move up and down.
Preferably, the side beam of the elongated hole is provided with an inward concave arc groove, a Y-axis driving shaft 7 is arranged in the arc groove, the Y-axis driving shaft 7 is located at the center position of the beam 1 in the vertical direction, and the Y-axis driving shaft 7 is a lead screw transmission pair.
Preferably, the main shaft 13 is disposed at the geometric center of the bottom of the direction ram 4.
Preferably, the side surfaces of the left sliding plate 2 and the right sliding plate 3 are provided with nuts of a screw transmission pair, the nuts are arranged on a matched screw, the screw is arranged in the arc groove through a bearing, the end part of the screw is provided with a screw driving motor,
the invention has the advantages that: the ram is nested in the cylindrical sliding plate, the cylindrical sliding plate is nested in the beam with the central square hole to form a double-nested structure, and the two nested structures are all encircling mounting structures formed by four linear rails, so that the structure is high in rigidity, good in stability, free of the problem of structural unbalance loading, balanced in stress of the linear rails, free of the problem of local transitional wear and high in precision retentivity; the main body structure is symmetrically designed, the temperature rise of the main motion guide rail is uniform, the thermal symmetric arrangement is basically realized, the influence of the temperature rise on the precision is reduced, and the precision retentivity of the machine tool is improved.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 is a top view of the present invention.
Fig. 4 is a cross-sectional view of the present invention.
Fig. 5 is a schematic diagram of a conventional structure.
In the drawings: 1. the device comprises a beam, 2, a left sliding plate, 3, a right sliding plate, 4, a square ram, 5, a Y-axis linear guide rail, 6 and a Z-axis linear guide rail, 7 and a Y-axis driving shaft, 8 and a Z-axis left driving device and 9 and a Z-axis right driving device; 10. the balance oil cylinder 11, the connecting plate 12 and the balance support; 13. the device comprises a main shaft, 14 vertical linear rail sliding blocks, 15 horizontal linear rail sliding blocks, 16 circular arc grooves.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments:
the invention is shown in figures 1, 2 and 3, and comprises a beam 1, wherein the center of the beam 1 is a strip-shaped hole, and four groups of Y-axis linear guide rails 5 along the length direction of the strip-shaped hole are respectively arranged on two side edges above and two side edges below the strip-shaped hole. The four groups of Y-axis linear guide rails 5 are parallel to each other. The two upper Y-axis linear guide rails 5 face upwards, the two lower Y-axis linear guide rails 5 face downwards,
and a left sliding plate 2 and a right sliding plate 3 are arranged on the left side edge and the right side edge of the cross-over long-strip-shaped hole, and the left sliding plate 2 and the right sliding plate 3 move on a Y-axis linear guide rail 5 through a horizontal linear rail sliding block. The left sliding plate 2 and the right sliding plate 3 are symmetrically arranged relative to the vertical plane of the length direction of the beam, the upper part and the lower part of the left sliding plate 2 are symmetrically arranged relative to the horizontal plane of the center of the beam, and the upper part and the lower part of the right sliding plate 3 are symmetrically arranged relative to the horizontal plane of the center of the beam.
The connecting plates 11 are arranged at the left and right four butt joints of the upper and lower surfaces of the left sliding plate 2 and the right sliding plate 3, so that the overall connecting strength is ensured. Left side slide 2 and right slide 3 constitute the tube-shape slide structure in inside square hole through connecting plate 11, the downthehole embedded square ram 4 in the center square of tube-shape slide, four Z axle linear guide 6 are arranged in the four corners of square ram 4, two Z axle linear guide 6 link to each other with left slide 2 and right slide 3 as a set of respectively, the vertical face symmetrical arrangement in the relative rectangular hole center length direction of two Z axle linear guide 6 of same group, the vertical face symmetrical arrangement in center between two sets of two Z axle linear guide 6 relative left slide 2 and the right slide 3.
The four Z-axis linear guide rails 6 are matched with the vertical linear rail sliding blocks on the left sliding plate 2 and the right sliding plate 3 to move up and down.
The Z-axis left drive 8 and the Z-axis right drive 9 are respectively arranged above the left sliding plate 2 and the right sliding plate 3, the Z-axis left drive 8 and the Z-axis right drive 9 are symmetrically arranged left and right relative to the direction ram 4, and the Z-axis left drive 8 and the Z-axis right drive 9 simultaneously drive the direction ram 4 to move up and down.
The front side and the rear side of the ram are respectively provided with a balance oil cylinder 10, the upper part of the balance oil cylinder is connected with the ram 4 through a balance bracket 12, the lower part of the balance oil cylinder 10 is fixed on a connecting plate 11 between the left sliding plate 2 and the right sliding plate 3 through a flange, and the two balance oil cylinders are symmetrically arranged in the front and the rear relative to the direction ram 4.
The side beam of the rectangular hole is provided with an inwards concave arc groove, a Y-axis driving shaft 7 is arranged in the arc groove, the Y-axis driving shaft 7 is positioned at the central position of the beam 1 in the vertical direction, and the Y-axis driving shaft 7 is a lead screw transmission pair. The side surfaces of the left sliding plate 2 and the right sliding plate 3 are provided with nuts of a screw transmission pair, the nuts are arranged on a matched screw, the screw is arranged in an arc groove through a bearing, the end part of the screw is provided with a screw driving motor,
the main shaft 13 is arranged at the geometric center of the bottom of the direction ram 4.
The invention realizes a double-nested structure which is formed by nesting a ram in a cylindrical sliding plate and nesting the cylindrical sliding plate in a cross beam with a central square hole, wherein the two nested structures are encircling mounting structures formed by four linear rails, the structure rigidity is high, the stability is good, the main structure is symmetrically designed, the temperature rise of the main motion guide rails is uniform, the thermal symmetric arrangement is basically realized, the influence of the temperature rise on the precision is reduced, and the precision retentivity of a machine tool is improved.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the concept and the protection scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall within the protection scope of the present invention.
Claims (8)
1. The utility model provides a two inlays thermal symmetry lathe structures of cover, including crossbeam (1), the center of crossbeam (1) is rectangular shape hole, the both sides edge setting of rectangular shape hole upper and lower face is followed Y axle linear guide (5) four groups of rectangular shape hole length direction, it sets up left slide (2) and right slide (3) to cross rectangular shape hole upper and lower and both sides edge, left slide (2) and right slide (3) move on Y axle linear guide (5) through horizontal line rail slider setting, the perpendicular symmetrical arrangement of the relative crossbeam length direction of left slide (2) and right slide (3), the symmetrical arrangement of the relative crossbeam center horizontal plane of upper and lower part of left slide (2), the symmetrical arrangement of the relative crossbeam center horizontal plane of upper and lower part of right slide (3), set up square ram between left slide (2) and right slide (3), square ram is equipped with Z axle linear guide (6) respectively with left slide (2) and right slide (3).
2. The double-nested thermal symmetry machine tool structure according to claim 1, wherein the connecting plates (11) are arranged at four butt joints on the left side and the right side of the upper surface and the lower surface of the left sliding plate (2) and the right sliding plate (3), the left sliding plate (2) and the right sliding plate (3) form a cylindrical sliding plate structure with an internal square hole through the connecting plates (11), a square ram (4) is embedded in the central square hole of the cylindrical sliding plate, four Z-axis linear guide rails (6) are arranged at four corners of the square ram (4), and the four Z-axis linear guide rails (6) are matched with vertical linear guide rail sliding blocks on the left sliding plate (2) and the right sliding plate (3) to move up and down.
3. The double-nested thermal symmetry machine tool structure according to claim 2, wherein two Z-axis linear guide rails (6) are connected to the left slide plate (2) and the right slide plate (3) as a set, the two Z-axis linear guide rails (6) in the same set are symmetrically arranged relative to the vertical plane of the center length direction of the elongated hole, and the two sets of two Z-axis linear guide rails (6) are symmetrically arranged relative to the vertical plane of the center between the left slide plate (2) and the right slide plate (3).
4. The double-nested thermal symmetry machine tool structure according to claim 2, characterized in that the front and rear side surfaces of the ram are respectively provided with a balance cylinder (10), the upper part of the ram is connected with the square ram (4) through a balance bracket (12), the lower part of the balance cylinder (10) is fixed on a connecting plate (11) between the left slide plate (2) and the right slide plate (3) through a flange, and the two balance cylinders are symmetrically arranged in front and rear relative to the square ram (4).
5. The structure of the double-nested thermal symmetry machine tool according to claim 2, characterized in that the Z-axis left drive (8) and the Z-axis right drive (9) are respectively arranged above the left slide plate (2) and the right slide plate (3), the Z-axis left drive (8) and the Z-axis right drive (9) are arranged in a left-right symmetry manner relative to the square ram (4), and the Z-axis left drive (8) and the Z-axis right drive (9) simultaneously drive the square ram (4) to move up and down.
6. The double-nested thermal symmetry machine tool structure according to claim 1, wherein the side beam of the elongated hole is provided with an inward concave arc groove, a Y-axis driving shaft (7) is arranged in the arc groove, the Y-axis driving shaft (7) is positioned at the center position of the beam (1) in the vertical direction, and the Y-axis driving shaft (7) is a lead screw transmission pair.
7. The double-nested thermally symmetrical machine tool structure according to claim 2, wherein the main shaft (13) is arranged at the geometric center of the bottom of the square ram (4).
8. The double-nested thermal symmetry machine tool structure according to claim 6, characterized in that the side surfaces of the left sliding plate (2) and the right sliding plate (3) are provided with nuts of a screw transmission pair, the nuts are arranged on the matched screw, the screw is arranged in the arc groove through a bearing, and the end part of the screw is provided with a screw driving motor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020582745.4U CN212705431U (en) | 2020-04-19 | 2020-04-19 | Double-nested thermally symmetrical machine tool structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020582745.4U CN212705431U (en) | 2020-04-19 | 2020-04-19 | Double-nested thermally symmetrical machine tool structure |
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| CN212705431U true CN212705431U (en) | 2021-03-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113458810A (en) * | 2021-09-03 | 2021-10-01 | 沈阳马卡智工科技有限公司 | Gantry machine tool |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113458810A (en) * | 2021-09-03 | 2021-10-01 | 沈阳马卡智工科技有限公司 | Gantry machine tool |
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