阅读说明：本技术 一种稳定性高的运动结构和加工机床 (Motion structure and machine tool that stability is high ) 是由 刘国锦 赵小雨 林禄生 沈成辉 黄敏波 于 2021-07-30 设计创作，主要内容包括：本发明公开一种稳定性高的运动结构和具有该运动结构的加工机床,其中运动结构包括：立柱组件,其包括第一立柱和第二立柱,第一立柱和第二立柱相对地左右间隔设置,第一立柱和第二立柱之间设有运动空间；前后运动组件,其包括上下滑枕,上下滑枕设于运动空间内；滑动连接组件,上下滑枕的左前侧和左后侧分别通过滑动连接组件与第一立柱的前侧和后侧滑动连接,上下滑枕的左前侧和左后侧分别通过滑动连接组件与第二立柱的前侧和后侧滑动连接。上下滑枕的左前侧、左后侧、右前侧和右后侧均有受力连接点,上下滑枕与立柱组件形成在多个方位上的多个受力连接点,减少上下滑枕和滑动连接组件的变形,从而提高了运动结构的稳定性,有利于提高加工精度。(The invention discloses a motion structure with high stability and a processing machine tool with the motion structure, wherein the motion structure comprises: the stand column assembly comprises a first stand column and a second stand column, the first stand column and the second stand column are oppositely arranged at left and right intervals, and a movement space is arranged between the first stand column and the second stand column; the front and back movement assembly comprises an upper ram and a lower ram, and the upper ram and the lower ram are arranged in the movement space; and the left front side and the left rear side of the upper ram and the lower ram are respectively in sliding connection with the front side and the rear side of the first upright post through the sliding connection assembly, and the left front side and the left rear side of the upper ram and the lower ram are respectively in sliding connection with the front side and the rear side of the second upright post through the sliding connection assembly. The left front side, the left rear side, the right front side and the right rear side of the upper ram and the lower ram are all provided with stress connection points, the upper ram and the lower ram and the upright post assembly form a plurality of stress connection points in a plurality of directions, and deformation of the upper ram and the lower ram and the sliding connection assembly is reduced, so that the stability of the motion structure is improved, and the improvement of the processing precision is facilitated.)

1. A high stability exercise structure, comprising:

the stand column assembly comprises a first stand column and a second stand column, the first stand column and the second stand column are oppositely arranged at left and right intervals, and a movement space extending along the vertical direction is arranged between the first stand column and the second stand column;

the front and back movement assembly comprises an upper ram and a lower ram, the upper ram and the lower ram are arranged in the movement space, and the upper ram and the lower ram can slide along the up and down direction;

sliding connection subassembly, sliding connection subassembly's quantity is at least four, the left front side and the left rear side of ram pass through respectively from top to bottom sliding connection subassembly with the front side and the rear side sliding connection of first stand, the right front side and the right rear side of ram pass through respectively from top to bottom sliding connection subassembly with the front side and the rear side sliding connection of second stand.

2. The high-stability movement structure of claim 1, wherein the sliding connection assembly comprises a first sliding rail and a first sliding block, the first sliding block and the first sliding block are slidably connected with each other, the first sliding rail is fixedly connected to the upper ram and the lower ram, and the first sliding rail is fixedly connected to the first upright or the second upright, the position of which corresponds to that of the first upright or the second upright.

3. The high stability exercise structure of claim 2, wherein the left front side and the left rear side of the upper and lower ram are respectively provided with a first left connecting plate and a second left connecting plate extending leftward, the first left connecting plate and the second left connecting plate are respectively positioned at the front side and the rear side of the first upright post, the right front side and the right rear side of the upper ram and the lower ram are respectively provided with a first right connecting plate and a second right connecting plate which extend rightwards, the first right connecting plate and the second right connecting plate are respectively positioned at the front side and the rear side of the second upright post, the rear side of the first left connecting plate and the front side of the second left connecting plate are both fixedly connected with the first sliding block, the rear side of the first right connecting plate and the front side of the second right connecting plate are both fixedly connected with the first sliding block, the first slide rail is fixedly connected to the front side or the rear side of the first upright post or the second upright post corresponding to the first slide rail in position.

4. The high stability exercise structure of claim 3, wherein the mast assembly further comprises an upper cover plate that is removably attached to an upper side of the first mast and the second mast.

5. The high stability exercise structure of claim 3, wherein the fore and aft movement assembly further comprises fore and aft rams, the fore and aft rams sliding with the upper and lower rams in the fore and aft direction.

6. The high-stability movement structure of claim 5, wherein the upper and lower rams comprise a lower transverse plate, a left vertical plate and a right vertical plate, the left vertical plate and the right vertical plate are respectively located at the upper left side and the upper right side of the lower transverse plate, the front and rear rams are slidably connected to the upper side of the lower transverse plate along the front-rear direction, the first left connecting plate and the second left connecting plate are respectively located at the front side and the rear side of the left vertical plate, and the first right connecting plate and the second right connecting plate are respectively located at the front side and the rear side of the right vertical plate.

7. The high-stability movement structure according to claim 5, wherein a second sliding block is fixedly connected to the upper side of the upper ram and the lower ram, a second sliding rail extending in the front-back direction is fixedly connected to the lower side of the front ram and the lower ram, and the second sliding block is slidably connected to the second sliding rail.

8. The high stability exercise structure of claim 5, wherein the front and rear rams are provided with a machining spindle.

9. The high-stability movement structure of claim 1, wherein a hollowed-out structure is arranged on the first upright post and/or the second upright post.

10. A machine tool comprising the high stability kinematic structure of any of claims 1 to 9, the machine tool further comprising a bed to which the column assembly is attached.

Technical Field

The invention relates to the technical field of machining equipment, in particular to a motion structure with high stability and a machining machine tool.

Background

The machine tool is a common machining device, the motion shaft of the Y shaft of the partial machine tool in the up-down direction is mostly of a double-guide-rail structure, namely, two guide rails are arranged on the same side face of the upright post, and the Y shaft is in sliding connection with the upright post in the up-down direction through the two guide rails.

However, in the above-mentioned dual-rail structure, because the two rails are only arranged on the same side of the column, the rails are easily deformed by force, the stability of the Y-axis is poor, and the machining precision of the machining spindle on the Y-axis is easily reduced; when the stroke of the Y axis is increased, the weight of the Y axis is increased, the precision of the Y axis cannot be ensured, the processing precision is ensured, the stroke of the Y axis can only be sacrificed, and the stroke of the Y axis is short.

Therefore, a motion structure that can improve the stability of the motion axis and improve the processing precision is desired by those skilled in the art.

Disclosure of Invention

The invention mainly aims to provide a motion structure with high stability, and aims to solve the technical problem that the motion structure in the prior art is poor in stability.

In order to achieve the above object, the present invention provides a motion structure with high stability, comprising:

the stand column assembly comprises a first stand column and a second stand column, the first stand column and the second stand column are oppositely arranged at left and right intervals, and a movement space extending along the vertical direction is arranged between the first stand column and the second stand column;

the front and back movement assembly comprises an upper ram and a lower ram, the upper ram and the lower ram are arranged in the movement space, and the upper ram and the lower ram can slide along the up and down direction;

sliding connection subassembly, sliding connection subassembly's quantity is at least four, the left front side and the left rear side of ram pass through respectively from top to bottom sliding connection subassembly with the front side and the rear side sliding connection of first stand, the right front side and the right rear side of ram pass through respectively from top to bottom sliding connection subassembly with the front side and the rear side sliding connection of second stand.

The ram sets up between first stand and second stand from top to bottom, the front side and the rear side of first stand, the front side and the rear side of second stand all are connected with upper and lower ram through sliding connection subassembly, the left front side of upper and lower ram, the left rear side, right front side and right rear side all have the atress tie point, upper and lower ram forms a plurality of atress tie points in a plurality of position with the stand subassembly, it only connects on a side to be different from current double-rail structure, every sliding connection subassembly's atress has also been reduced, ram and sliding connection subassembly's deformation about reducing, thereby the stability of motion structure has been improved, be favorable to improving the machining precision.

Preferably, sliding connection subassembly includes mutual sliding connection's first slide rail and first slider, first slider fixed connection in on the ram from top to bottom, first slide rail fixed connection in the position corresponds first stand or on the second stand. The first slide rail is arranged on the corresponding first upright post or the second upright post, the first slide block is arranged on the upper ram and the lower ram, and the occupied space is small when the upper ram and the lower ram move up and down.

Preferably, the left front side and the left rear side of the upper ram and the lower ram are respectively provided with a first left connecting plate and a second left connecting plate which extend leftwards, the first left connecting plate and the second left connecting plate are respectively positioned at the front side and the rear side of the first upright post, the right front side and the right rear side of the upper ram and the lower ram are respectively provided with a first right connecting plate and a second right connecting plate which extend rightwards, the first right connecting plate and the second right connecting plate are respectively positioned at the front side and the rear side of the second upright post, the rear side of the first left connecting plate and the front side of the second left connecting plate are both fixedly connected with the first sliding block, the rear side of the first right connecting plate and the front side of the second right connecting plate are both fixedly connected with the first sliding block, the first slide rail is fixedly connected to the front side or the rear side of the first upright post or the second upright post corresponding to the first slide rail in position.

First left connecting plate and second left connecting plate, first right connecting plate and second right connecting plate are extended respectively to the left side and the right side of ram from top to bottom, first left connecting plate and the setting of the left connecting plate of second are in the positive front side and the positive rear side of first stand, first right connecting plate and the setting of the right connecting plate of second are in the positive front side and the positive rear side of second stand, can make first slide rail and second slider set up around like this, the direction of stress of first slide rail and first slider is better, stability is improved.

Preferably, the pillar assembly further comprises an upper cover plate detachably connected to upper sides of the first pillar and the second pillar.

When the upper ram and the lower ram are installed, the first left connecting plate, the second left connecting plate, the first right connecting plate and the second right connecting plate are arranged on the upper ram and the lower ram, so that the upper ram and the lower ram cannot be directly placed into a movement space from the front side or the rear side of the movement space, and the upper ram and the lower ram need to be placed into the movement space from the upper side; therefore, set up removable upper cover plate, take off the upper cover plate when ram about the installation, put into the motion space and connect sliding connection subassembly back from the upside to ram about, again fixed with first stand and second stand respectively on the left side and the right side of upper cover plate. Therefore, the upper ram and the lower ram can be conveniently installed and fixed on the upper sides of the first upright post and the second upright post, and the rigidity and the strength of the upright post assembly can be improved.

Preferably, the forward and backward movement assembly further comprises a forward and backward ram, and the forward and backward ram and the up and down ram slide in the forward and backward direction. The front and rear rams can move up and down along with the upper and lower rams and can also move in the front and rear direction relative to the upper and lower rams.

Preferably, the upper and lower ram includes diaphragm, left riser and right riser down, left side riser with right riser is located respectively the upper left side and the upper right side of diaphragm down, around the ram along fore-and-aft direction sliding connection in the upside of diaphragm down, first left connecting plate with the left connecting plate of second is located respectively the front side and the rear side of left side riser, first right connecting plate with the right connecting plate of second is located respectively the front side and the rear side of right riser.

The upper side at diaphragm down is connected to preceding back ram, and left riser and right riser are located the left side and the right side of back ram, and the height of the first slider on first left connecting plate, the left connecting plate of second, first right connecting plate and the right connecting plate of second can partly or whole coincidence with the height of preceding back ram, effectively utilizes the height of component, reduces the height that the seesaw subassembly occupy, and the space is arranged more rationally.

Preferably, the upper sides of the upper and lower rams are fixedly connected with a second slider, the lower sides of the front and rear rams are fixedly connected with a second slide rail extending along the front and rear direction, and the second slider is slidably connected with the second slide rail. Therefore, the widths of the upper ram, the lower ram and the upright post assembly in the front-back direction are reduced, and the front slide rail and the rear slide rail can also extend out of the upright post assembly.

Preferably, the front ram and the rear ram are provided with processing spindles.

Preferably, the first upright post and/or the second upright post are/is provided with a hollow structure. The hollow structure can enable the first stand column and/or the second stand column to keep better strength and reduce the weight of the first stand column and/or the second stand column.

In another aspect of the present invention, a processing machine tool with the motion structure with high stability is further provided, the processing machine tool further includes a machine bed, and the column assembly is connected to the machine bed. Through adopting foretell high motion structure of stability, can improve machine tool's machining precision.

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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a front side schematic view of the motion configuration of the present invention;

FIG. 2 is a rear side view of the exercise structure of the present invention;

FIG. 3 is a schematic structural view of a mast assembly of the invention;

FIG. 4 is a schematic structural view of the upper and lower rams of the present invention;

fig. 5 is a schematic view of the underside of the forward and backward movement assembly of the present invention.

In the drawings: 1-upright post component, 11-first upright post, 12-second upright post, 13-motion space, 14-upper cover plate, 15-first screw rod, 16-first motor, 17-bottom plate, 18-hollow structure, 2-back and forth motion component, 21-upper and lower ram, 211-first left connecting plate, 212-second left connecting plate, 213-first right connecting plate, 214-second right connecting plate, 215-lower transverse plate, 216-left vertical plate, 217-right vertical plate, 22-front and back ram, 23-second sliding block, 24-second sliding rail, 25-second screw rod, 26-second motor, 3-sliding connection component, 31-first sliding rail, 32-first sliding block and 4-processing spindle.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

It should be noted that, if directional indication is involved in the embodiment of the present invention, the directional indication is only used for explaining the relative positional relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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 at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 1 to 5, a high-stability movement structure includes a column assembly 1, a forward and backward movement assembly 2, and a sliding connection assembly 3.

The column assembly 1 comprises a first column 11 and a second column 12, the first column 11 and the second column 12 are arranged at intervals from left to right, and a movement space 13 extending along the up-down direction is arranged between the first column 11 and the second column 12. The underside of the first upright 11 and the underside of the second upright 12 may be connected by a base plate 17.

The forward and backward movement assembly 2 includes upper and lower rams 21, the upper and lower rams 21 being provided in the movement space 13, the upper and lower rams 21 being slidable in the up and down direction. In this embodiment, the forward and backward motion assembly 2 is the Y-axis of the machine tool.

The number of the sliding connection assemblies 3 is at least four, the front side and the rear side of the first upright post 11 and the front side and the rear side of the second upright post 12 are respectively provided with at least one sliding connection assembly 3, the left front side and the left rear side of the upper ram 21 and the lower ram 21 are respectively in sliding connection with the front side and the rear side of the first upright post 11 through the sliding connection assemblies 3, and the right front side and the right rear side of the upper ram 21 and the lower ram 21 are respectively in sliding connection with the front side and the rear side of the second upright post 12 through the sliding connection assemblies 3. In some embodiments, other than four slide-link assemblies 3 may be provided at other locations on the four slide-link assemblies 3 to increase the connection points of the upper and lower rams 21 to the mast assembly 1.

The upper ram 21 and the lower ram 21 are arranged between the first upright post 11 and the second upright post 12, the front side and the rear side of the first upright post 11, the front side and the rear side of the second upright post 12 are all connected with the upper ram 21 and the lower ram 21 through the sliding connection assembly 3, the left front side, the left rear side, the right front side and the right rear side of the upper ram 21 and the lower ram 21 are all provided with stress connection points, the upper ram 21 and the lower ram 21 and the upright post assembly 1 form a plurality of stress connection points in at least four directions, which are different from the prior double-guide rail structure that the upper ram 21 and the lower ram are connected on only one side surface, the left direction, the right direction, the front direction and the rear direction of the upper ram 21 and the lower ram 21 in the technology are provided with at least two stress connection points, the stability is higher, the stress of each sliding connection assembly 3 is also reduced, and the deformation of the upper ram 21 and the sliding connection assembly 3 is reduced, thereby improving the stability of the motion structure, being beneficial to improving the processing precision and being capable of increasing the weight and the stroke of the front and back motion component 2.

In some embodiments, the sliding connection assembly 3 includes a first slide rail 31 and a first slide block 32 that are slidably connected to each other, the first slide block 32 can slide up and down on the first slide rail 31, the first slide block 32 is fixedly connected to the upper and lower rams 21, and the first slide rail 31 is fixedly connected to the first upright 11 or the second upright 12 corresponding to the position.

The first slide rail 31 is arranged on the corresponding first upright post 11 or second upright post 12, the first slide block 32 is arranged on the upper and lower ram 21, and the occupied space is small when the upper and lower ram 21 moves up and down.

In some embodiments, the left front side and the left rear side of the upper and lower ram 21 are respectively provided with a first left connecting plate 211 and a second left connecting plate 212 extending leftward, the first left connecting plate 211 and the second left connecting plate 212 are respectively located at the front side and the front rear side of the first upright post 11, the right front side and the right rear side of the upper and lower ram 21 are respectively provided with a first right connecting plate 213 and a second right connecting plate 214 extending rightward, the first right connecting plate 213 and the second right connecting plate 214 are respectively located at the front side and the front rear side of the second upright post 12, the rear side of the first left connecting plate 211 and the front side of the second left connecting plate 212 are both fixedly connected with a first slider 32, the rear side of the first right connecting plate 213 and the front side of the second right connecting plate 214 are both fixedly connected with a first slider 32, and the first sliding rail 31 is fixedly connected to the front side or the front rear side of the corresponding first upright post 11 or second upright post 12.

First left connecting plate 211 and second left connecting plate 212 extend respectively from the left side and the right side of upper and lower ram 21, first right connecting plate 213 and second right connecting plate 214, first left connecting plate 211 and second left connecting plate 212 set up at first stand 11 positive front side and positive rear side, first right connecting plate 213 and second right connecting plate 214 set up at second stand 12 positive front side and positive rear side, can make first slide rail 31 and second slider 23 set up from beginning to end like this, first slide rail 31 and first slider 32's direction of stress is better, stability is improved. In some embodiments, the first slide rail 31 and the first slider 32 can also be disposed on the left side or the right side of the first upright 11 or the second upright 12, which also has the effect of connecting the upper and lower rams 21 in multiple orientations.

Further, the pillar assembly 1 further includes an upper cover 14, and the upper cover 14 is detachably connected to the upper sides of the first pillar 11 and the second pillar 12.

When the upper ram 21 and the lower ram 21 are installed, the upper ram 21 and the lower ram 21 cannot be directly placed into the movement space 13 from the front side or the rear side because the first left connecting plate 211, the second left connecting plate 212, the first right connecting plate 213 and the second right connecting plate 214 are arranged on the upper ram 21 and the lower ram 21 needs to be placed into the movement space 13 from the upper side; therefore, a detachable upper cover plate 14 is provided, the upper cover plate 14 is removed when the upper and lower ram 21 are installed, the upper and lower ram 21 is put into the movement space 13 from the upper side and the slide connection assembly 3 is connected, and then the left and right sides of the upper cover plate 14 are fixed to the first and second vertical columns 11 and 12, respectively. Therefore, the upper ram 21 and the lower ram 21 can be conveniently installed, the upper ram 21 and the lower ram 21 are fixed on the upper sides of the first upright post 11 and the second upright post 12, and the rigidity and the strength of the upright post assembly 1 can be improved.

The upright post component 1 is provided with a first screw rod 15, the upper end of the first screw rod 15 can be connected with an upper cover plate 14, the lower end of the first screw rod 15 can be connected with the lower side of the first upright post 11 or the second upright post 12, the upright post component 1 is provided with a first motor 16, and the first motor 16 is in transmission connection with the first screw rod 15; the first screw rod 15 is connected with a first nut through threads, the first nut is fixedly connected with the upper ram 21 and the lower ram 21, and the first motor 16 drives the first screw rod 15 to rotate so as to drive the front-rear movement assembly 2 to move up and down.

In some embodiments, the forward and backward movement assembly 2 further includes forward and backward rams 22, and the forward and backward rams 22 and the up and down rams 21 slide in the forward and backward direction. The front and rear rams 22 are movable up and down with the upper and lower rams 21 while being movable in the front and rear direction with respect to the upper and lower rams 21.

Further, the upper and lower rams 21 include a lower cross plate 215, a left vertical plate 216 and a right vertical plate 217, the left vertical plate 216 and the right vertical plate 217 are respectively located at the left upper side and the right upper side of the lower cross plate 215, the front and rear rams 22 are slidably connected to the upper side of the lower cross plate 215 along the front-rear direction, the first left connecting plate 211 and the second left connecting plate 212 are respectively located at the front side and the rear side of the left vertical plate 216, and the first right connecting plate 213 and the second right connecting plate 214 are respectively located at the front side and the rear side of the right vertical plate 217.

The front and rear rams 22 are connected to the upper side of the lower cross plate 215, the left and right risers 216 and 217 are located on the left and right sides of the front and rear rams 22, and the left and right risers 216 and 217 have the function of reinforcing the strength of the lower cross plate 215 and also have the function of connecting and reinforcing the first and second left connecting plates 211 and 212, the first and second right connecting plates 213 and 214, respectively. The height of the first slider 32 on the first left connecting plate 211, the second left connecting plate 212, the first right connecting plate 213 and the second right connecting plate 214 can be partially or completely coincided with the height of the front and rear ram 22, the height of the components is effectively utilized, the height occupied by the front and rear movement assembly 2 is reduced, and the space arrangement is more reasonable.

Further, a second slider 23 is fixedly connected to an upper side of the upper and lower rams 21, a second slide rail 24 extending in the front-rear direction is fixedly connected to a lower side of the front and rear rams 22, and the second slider 23 is slidably connected to the second slide rail 24. Thus, the widths of the upper and lower rams 21 and the upright post assembly 1 in the front-rear direction are reduced, and the front and rear slide rails can also extend out of the upright post assembly 1.

A second screw rod 25 extending in the front-rear direction is arranged on the upper side of the lower transverse plate 215, a second nut is connected to the second screw rod 25 in a threaded manner, and the second nut is fixedly connected with the front ram 22 and the rear ram 22; the lower cross plate 215 is also fixedly connected with a second motor 26, and the second motor 26 drives the second lead screw 25 to rotate, so as to drive the front and rear ram 22 to move back and forth.

A machining spindle 4 is provided on the front side of the front and rear rams 22, and the machining spindle 4 can machine a workpiece on the front side of the column assembly 1. The front ram 22 and the rear ram 22 are of a columnar structure, hollow holes are formed in the front ram 22 and the rear ram 22, the weight of the front ram 22 and the weight of the rear ram 22 are reduced, a rotating motor is arranged in the front side of the front ram 22 and the rear ram 22, the machining spindle 4 is in transmission connection with the rotating motor, and the rotating motor drives the machining spindle 4 to rotate to adjust the machining angle.

In some embodiments, the first upright 11 and/or the second upright 12 are provided with a hollow structure 18. The first upright post 11 and the second upright post 12 have larger widths in the front-back direction, which is beneficial to increasing the span of stress connection points of the upper ram 21 and the lower ram 21 in the front-back direction and improving the strength of the upper ram 21 and the lower ram 21; the hollow structures 18 are arranged on the first upright post 11 and/or the second upright post 12, so that the width of the first upright post 11 and/or the second upright post 12 in the front-back direction is larger, the better strength is kept, and the weight of the first upright post 11 and/or the second upright post 12 is reduced. The hollow structure 18 may be a hollow hole or a hollow structure inside.

In another aspect of the present invention, a processing machine tool having the above-mentioned motion structure with high stability is further provided, and the column assembly 1 is connected to the machine tool body. A slide rail extending along the left and right direction is arranged on the bed body, and the upright post component 1 is connected to the slide rail and moves on the bed body; or the column assembly 1 is fixed on the bed. Through adopting foretell high motion structure of stability, can improve machine tool's machining precision.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.