CN114633139A - Machine tool positioning structure and horizontal machine tool - Google Patents

Abstract

The invention discloses a machine tool positioning structure and a horizontal machine tool, which comprise a fixing piece, a first positioning assembly, a second positioning assembly, a third positioning assembly and a main shaft, wherein the fixing piece is fixed on the main shaft; the first positioning component comprises a first moving part and at least two first linear guide rails, and the gravity center of the first moving part is positioned in a first space formed by all the first linear guide rails in a surrounding manner; the second positioning assembly comprises a second moving part and at least two second linear guide rails, and the gravity center of the second moving part is positioned in a second space formed by all the second linear guide rails in a surrounding manner; the third positioning assembly comprises a third moving part and at least two third linear guide rails, and the gravity center of the third moving part is positioned in a third space formed by all the third linear guide rails in a surrounding manner; the main shaft is connected to the third movable member. The invention limits the motion path of the corresponding moving part between the linear guide rails through the plurality of linear guide rails, can effectively improve the stability of the motion action of the moving part, and further effectively improves the processing precision.

Description

Machine tool positioning structure and horizontal machine tool

Technical Field

The invention relates to the technical field of machine tools, in particular to a machine tool positioning structure and a horizontal machine tool.

Background

Machine tools, which are machines for manufacturing machines, are mainly classified into metal cutting machines, forging machines, and woodworking machines, and machine tools can process parts meeting requirements.

The machine tool needs to be provided with a corresponding cutter to achieve corresponding machining, the cutter is mounted on a main shaft of the machine tool, and in the machining process, the machine tool needs to drive the cutter to achieve movement according to a preset path to machine materials, so that the obtained parts meet machining requirements. In the related art, a machine tool is provided with a driving and positioning structure for driving and positioning a main shaft provided with a cutter, the driving and positioning structure directly drives and positions the main shaft by arranging a screw rod mechanism, and the problems of low stability and slow driving response exist.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a machine tool positioning structure and a horizontal machine tool, which can effectively improve the motion stability of a main shaft and effectively ensure the machining precision of the machine tool.

According to the embodiment of the first aspect of the invention, the machine tool positioning structure comprises a fixing piece, a first positioning assembly, a second positioning assembly, a third positioning assembly and a main shaft; the first positioning component comprises a first moving part and at least two first linear guide rails, the gravity center of the first moving part is located in a first space formed by all the first linear guide rails in a surrounding mode, each first linear guide rail is connected with the fixing part and the first moving part, and the first linear guide rails are used for limiting the movement path of the first moving part to be parallel to the first direction; the second positioning assembly comprises a second moving part and at least two second linear guide rails, the gravity center of the second moving part is located in a second space formed by all the second linear guide rails in a surrounding mode, each second linear guide rail is connected with the first moving part and the second moving part, and the second linear guide rails are used for limiting the motion path of the second moving part to be parallel to the second direction; the third positioning assembly comprises a third moving part and at least two third linear guide rails, the gravity center of the third moving part is located in a third space formed by all the third linear guide rails in a surrounding mode, each third linear guide rail is connected with the second moving part and the third moving part, and the third linear guide rails are used for limiting the movement path of the third moving part to be parallel to a third direction; the main shaft is connected to the third movable member.

According to the machine tool positioning structure in the embodiment of the first aspect of the invention, at least the following beneficial effects are achieved: a plurality of linear guide rails are formed by the positioning structure, the movement path of the corresponding moving part in the positioning structure can be limited, thereby effectively improving the stress uniformity of the moving part, thereby effectively improving the stability of the movement of the moving part, ensuring the stable and reliable positioning effect formed by the positioning structure, meanwhile, the gravity center of the moving part is arranged in the space formed by the surrounding of the corresponding linear guide rail, and the inconsistent motion states of all areas of the moving part can be effectively avoided by reducing the torque between the moving part and each corresponding linear guide rail, so that the moving part can effectively respond in time when being driven, furthermore, the positioning accuracy of the positioning structure is effectively ensured, the positioning effect with high accuracy can be maintained even under the processing environment of high-speed movement, and the high-stability, high-efficiency and high-accuracy processing effect can be simultaneously obtained when the positioning structure is applied to machine tool processing.

According to some embodiments of the present invention, the first linear guide has three first linear guides, a first space surrounded by the three first linear guides is triangular prism-shaped, and the center of gravity of the first movable member is located at a central axis of the first space.

According to some embodiments of the present invention, the first positioning assembly further includes a first driving mechanism, a mover of the first driving mechanism is connected to the first movable member, the first driving mechanism is configured to drive the first movable member to move along a first direction, and a center of gravity of the first movable member is projected on a driving path of the first driving mechanism.

According to some embodiments of the present invention, four second linear guide rails are provided, a second space surrounded by the four second linear guide rails is quadrangular, and the center of gravity of the second movable member is located at the central axis of the second space.

According to some embodiments of the present invention, the second positioning assembly further includes two second driving mechanisms, a stator of the second driving mechanism is connected to the first movable member, a mover of the second driving mechanism is connected to the second movable member, the second driving mechanism is configured to drive the second movable member to move along the second direction, and the two second driving mechanisms are located on two opposite sides of a center of gravity of the second movable member.

According to some embodiments of the present invention, the number of the third linear guide rails is four, a third space surrounded by the four third linear guide rails is a quadrangular prism, the center of gravity of the third movable member is located at a central axis of the third space, and the main axis is located at a central axis of the third space.

According to some embodiments of the present invention, the third positioning assembly further includes a third driving mechanism, a stator of the third driving mechanism is connected to the second movable member, a mover of the third driving mechanism is connected to the third movable member, the third driving mechanism is configured to drive the third movable member to move along a third direction, and a center of gravity of the third movable member is projected on a driving path of the third driving mechanism.

According to some embodiments of the present invention, the fixed member, the first movable member, and the second movable member are all of a rectangular-square structure.

A horizontal machine tool according to an embodiment of a second aspect of the present invention includes the machine tool positioning structure of the embodiment of the first aspect.

According to the embodiment of the second aspect of the invention, the horizontal machine tool has at least the following beneficial effects: form a plurality of linear guide through location structure, can restrict the motion path that corresponds the moving part in the location structure, thereby effectively improve the homogeneity of moving part atress, and then the stability of action when effectively improving the moving part and moving, the location effect that location structure formed is reliable and stable, the focus that sets up the moving part simultaneously is located the space that corresponds linear guide around forming, through reducing the moment of torsion between moving part and each corresponding linear guide, can effectively avoid the motion state inconsistency of each region of moving part, thereby effectively ensure that the moving part can in time respond when being driven, and then effectively ensure location accuracy of location structure, especially even still can keep the location effect of high accuracy under the processing environment of high-speed motion, machine tool adds man-hour, can obtain high stability, high efficiency and high accuracy's processing effect simultaneously.

According to some embodiments of the invention, the horizontal machine tool further comprises a rack and a processing table, the fixing part is arranged on the rack, the rack is provided with a reinforcing frame, the processing table is arranged on the reinforcing frame, and the reinforcing frame is of a zigzag structure.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of a positioning structure of a machine tool according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a machine tool positioning structure according to an embodiment of the invention from another view angle;

FIG. 3 is a schematic structural diagram of a horizontal machine tool according to another embodiment of the present invention;

fig. 4 is a schematic structural diagram of a horizontal machine tool according to another embodiment of the present invention.

Reference numerals:

a fixing member 101;

the first positioning component 100, the first movable part 110, the first linear guide rail 120, the first driving mechanism 130 and the first grating scale 140;

the second positioning assembly 200, the second movable member 210, the second linear guide rail 220, the second driving mechanism 230, and the second linear scale 240;

a third positioning assembly 300, a third movable member 310, a third linear guide 320, a third driving mechanism 330, and a third linear scale 340;

a main shaft 400;

a frame 500, a reinforcing frame 510, a first rotating mechanism 511;

a processing table 600, a rotary arm 610, and a second rotary mechanism 620;

the tool magazine 700.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, left, right, front, rear, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if there are first and second described only for the purpose of distinguishing technical features, it is not understood that relative importance is indicated or implied or that the number of indicated technical features or the precedence of the indicated technical features is implicitly indicated or implied.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

In the related technology, the horizontal machine tool directly realizes the driving and positioning of the upright column through a screw rod mechanism or a gear rack mechanism and other driving mechanisms, the main shaft is connected to the upright column, the gravity center of the upright column is high, the distance between the gravity center of the upright column and a rotor of the driving mechanism is large, the torque between the upright column and the driving mechanism is large, the problem that the top of the upright column is easy to generate action lag when the upright column is driven is caused, the movement action of the upright column is unstable, the positioning precision of the main shaft is influenced, in addition, the required driving force is large when the upright column is driven, the processing cost is increased, the moving speed and the acceleration of a moving part are low, and the processing efficiency is low.

Based on this, referring to fig. 1 to 4, an embodiment of the present invention provides a machine tool positioning structure and a horizontal machine tool, which can achieve a stable and reliable positioning effect on a spindle 400, thereby effectively ensuring the machining precision of the machine tool.

Referring to fig. 1 and 2, a machine tool positioning structure according to an embodiment of the first aspect of the present invention includes a fixed member 101, a first positioning assembly 100, a second positioning assembly 200, a third positioning assembly 300, and a spindle 400; the first positioning assembly 100 includes a first movable part 110 and at least two first linear guide rails 120, a center of gravity of the first movable part 110 is located in a first space surrounded by all the first linear guide rails 120, specifically, the first linear guide rails 120 are used as edges of the first space, where the first space may be a quadrilateral two-dimensional space or a prismatic three-dimensional space, each first linear guide rail 120 is connected to the fixed part 101 and the first movable part 110, and the first linear guide rails 120 are used for limiting a movement path of the first movable part 110 to be parallel to a first direction; the second positioning assembly 200 includes a second movable member 210 and at least two second linear guide rails 220, the center of gravity of the second movable member 210 is located in a second space surrounded by all the second linear guide rails 220, specifically, the second linear guide rails 220 are used as edges of the second space, where the second space may be a quadrilateral two-dimensional space or a prismatic three-dimensional space, each second linear guide rail 220 is connected to the first movable member 110 and the second movable member 210, and the second linear guide rails 220 are used for limiting the motion path of the second movable member 210 to be parallel to the second direction; the third positioning assembly 300 includes a third movable member 310 and at least two third linear guide rails 320, the center of gravity of the third movable member 310 is located in a third space surrounded by all the third linear guide rails 320, specifically, the third linear guide rails 320 are used as the sides of the third space, where the third space may be a quadrilateral two-dimensional space or a prismatic three-dimensional space, each third linear guide rail 320 is connected to the second movable member 210 and the third movable member 310, and the third linear guide rails 320 are used for limiting the movement path of the third movable member 310 to be parallel to a third direction; the main shaft 400 is connected to the third movable member 310, and the main shaft 400 is used for mounting a tool.

Specifically, referring to fig. 1, the first direction, the second direction and the third direction are respectively an x axis, a z axis and a y axis, and the first positioning assembly 100, the second positioning assembly 200 and the third positioning assembly 300 can achieve a three-dimensional positioning effect on the spindle 400, and can achieve a stable and high-precision positioning effect when being used for installing a tool and being applied to machine tool machining. The first movable mass is only capable of moving along the x-axis under the constraint of the first linear guide 120, the second movable mass is only capable of moving along the z-axis under the constraint of the second linear guide 220, and the third movable mass is only capable of moving along the y-axis under the constraint of the third linear guide 320.

The positioning structure is used for forming a plurality of linear guide rails, the movement path of the corresponding moving part in the positioning structure can be limited, so that the stress uniformity of the moving part is effectively improved, the movement stability of the moving part during movement is effectively improved, the positioning effect formed by the positioning structure is stable and reliable, meanwhile, the gravity center of the moving part is arranged in the space formed by the surrounding of the corresponding linear guide rails, the driving force required when the moving part is driven can be reduced by reducing the torque between the moving part and each corresponding linear guide rail, so that the positioning cost is effectively reduced, the inconsistent movement state of each area of the moving part can be effectively avoided, namely, the movement of part of the area of the moving part is effectively prevented from generating lag, so that the moving part can respond in time when being driven, the positioning precision of the positioning structure is effectively ensured, and particularly, the high-precision positioning effect can still be maintained even in the processing environment of high-speed movement, when the method is applied to machine tool machining, the machining effects of high stability, high efficiency and high precision can be simultaneously obtained.

It can be understood that, referring to fig. 1, the first linear guide 120 is provided with three first linear guide 120, a first space surrounded by the three first linear guide 120 is triangular prism-shaped, the three first linear guide 120 are three prisms of the first space, the center of gravity of the first movable element 110 is located at a central axis of the triangular prism-shaped first space, and the central axis of the first space is parallel to the first linear guide 120, so that a stable and reliable positioning effect can be formed.

Specifically, the first movable element 110 is provided with a first sliding block, the first sliding block is provided with a first clamping groove, and the first clamping groove is clamped to the first linear guide rail 120, so that the first sliding block can slide on the first linear guide rail 120.

It can be understood that, referring to fig. 1, the first positioning assembly 100 further includes a first driving mechanism 130, a mover of the first driving mechanism 130 is connected to the first movable element 110, a stator of the first driving mechanism 130 is connected to the fixed element 101, the first driving mechanism 130 is configured to drive the first movable element 110 to move along the first direction, a center of gravity of the first movable element 110 is vertically projected onto a driving path of the first driving mechanism 130, that is, the stator of the first driving mechanism 130 is located right below the center of gravity of the first movable element 110, so that stability of the first driving mechanism 130 in driving the first movable element 110 to move can be effectively improved, especially, positioning accuracy of the first movable element 110 during high-speed driving can be effectively ensured, and the driving path of the first driving mechanism 130 is located on a side surface of the bottom in the three-prism-shaped first space. Optionally, the first driving mechanism 130 is a direct-drive linear motor, so that the volume of the overall structure can be effectively reduced, and the driving speed and the positioning accuracy can be improved.

Specifically, the first driving mechanism 130 is located between the two first linear guide rails 120 at the bottom, and the other first linear guide rail 120 is located above the center of gravity of the first moving part 110, so that the reliability of the driving action of the first driving mechanism 130 on the first moving part 110 can be improved, and the first moving part 110 can realize more stable translational motion.

It can be understood that, referring to fig. 1, the first positioning component 100 further includes a first grating ruler 140, the first grating ruler 140 is disposed on one side of the first movable part 110, and the first grating ruler 140 is used for detecting the position of the first movable part 110, so as to further ensure the positioning accuracy of the first movable part 110.

It can be understood that, referring to fig. 1 and 2, the number of the second linear guide rails 220 is four, a second space surrounded by four second linear guide rails 220 is quadrangular, the four second linear guide rails 220 are four prisms of the second space, the center of gravity of the second movable element 210 is located at the central axis of the quadrangular second space, the central axis of the second space is parallel to the second linear guide rails 220, so that a stable and uniform positioning effect can be formed, and the second linear guide rails 220 are used for limiting the movement direction of the second movable element 210 to be parallel to the second direction, so that a stable and reliable positioning effect can be formed.

Specifically, the second moving member 210 is provided with a second slider, the second slider is provided with a second clamping groove, and the second clamping groove is clamped to the second linear guide rail 220, so that the second slider can slide on the second linear guide rail 220, that is, the second moving member 210 can slide relative to the second linear guide rail 220, and the second linear guide rail 220 is fixedly connected to the first moving member 110.

It can be understood that, the first moving part 110 and the four second linear guide rails 220 form a translation module, and the four second linear guide rails 220 are uniformly distributed around and connected with the first moving part 110, so that the center of gravity of the translation module coincides with the center of gravity of the first moving part 110, and when the first driving mechanism 130 drives the first moving part 110 to move, the stability of the translation module moving along the first direction can be effectively improved, and the requirement of processing precision during high-speed operation can be met.

It can be understood that, referring to fig. 1 and fig. 2, the second positioning assembly 200 further includes two second driving mechanisms 230, a stator of the second driving mechanism 230 is connected to the first movable member 110, a mover of the second driving mechanism 230 is connected to the second movable member 210, the second driving mechanism 230 is used for driving the second movable member 210 to move along the second direction, the two second driving mechanisms 230 are located on two opposite sides of the center of gravity of the second movable member 210, that is, the stator of the second driving mechanism 230 is located on two opposite sides of the center of gravity of the second movable member 210, driving paths of the two second driving mechanisms 230 are respectively located on two opposite sides of the quadrangular-shaped second space, the two second driving mechanisms 230 are located on two opposite sides of the main shaft 400, so as to avoid the second driving mechanisms 230 from affecting the operation of the main shaft 400, and the driving is performed by arranging the second driving mechanisms 230 on two opposite sides of the second movable member 210, the stability of action when driving the second moving part 210 to move can be effectively improved, and the influence of unbalanced stress on the positioning precision of the second moving part 210 is avoided. Optionally, the second driving mechanism 230 is a direct-drive linear motor, so that the volume of the overall structure can be effectively reduced, and the driving speed and the positioning accuracy can be improved.

It can be understood that, referring to fig. 1 and fig. 2, the second positioning assembly 200 further includes a second optical grating 240, the second optical grating 240 is connected to the first movable member 110, the second optical grating 240 is disposed on one side of the second movable member 210, and the second optical grating 240 is used for detecting the position of the second movable member 210, so as to further ensure the positioning accuracy of the second movable member 210.

It can be understood that, referring to fig. 1 and 2, four third linear guide rails 320 are provided, a third space surrounded by four third linear guide rails 320 is in a quadrangular prism shape, the four third linear guide rails 320 are four prisms of the third space, the center of gravity of the third movable member 310 is located at the central axis of the quadrangular prism-shaped third space, the central axis of the third space is parallel to the third linear guide rails 320, so that a stable and uniform positioning effect can be formed, and the third linear guide rails 320 are used for limiting the movement direction of the third movable member 310 to be parallel to the third direction, so that a stable and reliable positioning effect can be formed.

Specifically, the second movable member 210 is provided with a third slider, the third slider is provided with a third engaging groove, and the third engaging groove is engaged with the third linear guide rail 320, so that the third slider can slide on the third linear guide rail 320, that is, the second movable member 210 can slide relative to the third linear guide rail 320, the third linear guide rail 320 is fixedly connected to the third movable member 310, and the third linear guide rail 320 moves along with the third movable member 310.

It can be understood that the second moving part 210 and the four third linear guide rails 320 form a lifting module, and the four third linear guide rails 320 are uniformly distributed around the second moving part 210 and connected with the second moving part to make the center of gravity of the lifting module coincide with the center of gravity of the second moving part 210, so that when the second driving mechanism 230 drives the second moving part 210 to move, the stability of the translation module moving along the second direction can be effectively improved, and the requirement of processing precision during high-speed operation can be met.

It is understood that, referring to fig. 2, the third positioning assembly 300 further includes a third driving mechanism 330, a mover of the third driving mechanism 330 is connected to the second movable member 210, a stator of the third driving mechanism 330 is connected to the third movable member 310, the third driving mechanism 330 is used for driving the third movable member 310 to move along a third direction relative to the second movable member 210, a center of gravity of the third movable member 310 is perpendicularly projected to a driving path of the third driving mechanism 330, that is, the stator of the third driving mechanism 330 is located right below the center of gravity of the third movable member 310, and the driving path of the third driving mechanism 330 is located on the side surface of the bottom of the quadrangular third space, so that the reliability of the driving action of the third driving mechanism 330 on the third movable member 310 can be effectively improved, thereby further ensuring that the third movable member 310 can achieve a smooth translational motion, and in particular, effectively ensuring the positioning accuracy of the first movable member 110 during high speed driving. Optionally, the third driving mechanism 330 is a direct-drive linear motor, so that the volume of the overall structure can be effectively reduced, and the driving speed and the positioning accuracy can be improved.

It can be understood that, referring to fig. 1, the third positioning assembly 300 further includes a third linear scale 340, the third linear scale 340 is connected to the second movable member 210, the third linear scale 340 is disposed on one side of the third movable member 310, and the third linear scale 340 is used for detecting the position of the third movable member 310, so as to further ensure the positioning accuracy of the third movable member 310.

It can be understood that, when a third space formed by the four third linear guide rails 320 is quadrangular, the main shaft 400 and the third movable member 310 form a knife shaft module, the main shaft 400 is disposed at a central axis of the quadrangular third space, so that the centers of gravity of the knife shaft module and the third movable member 310 are overlapped, and when the third driving mechanism 330 drives the third movable member 310 to move along a third direction, the positioning accuracy of the knife shaft module can be further ensured, thereby ensuring the processing accuracy of the main shaft 400 when cooperating with a knife tool to work.

It is understood that the stationary member 101, the first movable member 110, and the second movable member 210 are all of a chevron configuration. The fixing member 101 is designed to have a zigzag structure, so that the rigidity of the fixing member can be effectively enhanced, and the stability of the positioning action of the first positioning assembly 100 can be improved; the first movable member 110 is configured in a zigzag structure, which can effectively enhance the rigidity of the first movable member, thereby improving the stability of the positioning action of the second positioning assembly 200; the second movable member 210 is configured as a zigzag structure, which can effectively enhance the rigidity thereof, thereby improving the stability of the positioning operation of the third positioning member 300.

By reducing the machining resonance caused by insufficient rigidity of the stationary member 101, the first movable member 110, or the second movable member 210, the stability of the positioning operation by the entire machine tool positioning structure can be effectively ensured. Through setting up three font structure of returning, can form closed loop formula's structure, the motion route that corresponds the moving part between them can be effectively restricted to three group linear guide that the cooperation corresponds, because each font structure of returning is high rigid structure and the focus of each moving part all locates in the space that linear guide surrounded, can all support the weight of three moving part in location structure to further improve the high speed nature and the accurate nature of moving part motion.

Referring to fig. 3 and 4, a horizontal machine tool according to a second aspect of the present invention includes the machine tool positioning structure according to the first aspect of the present invention.

Form a plurality of linear guide through location structure, can restrict the motion path that corresponds the moving part in the location structure, thereby effectively improve the homogeneity of moving part atress, and then the stability of action when effectively improving the moving part and moving, the location effect that location structure formed is reliable and stable, the focus that sets up the moving part simultaneously is located the space that corresponds linear guide around forming, through reducing the moment of torsion between moving part and each corresponding linear guide, can effectively avoid the motion state inconsistency of each region of moving part, thereby effectively ensure that the moving part can in time respond when being driven, and then effectively ensure location accuracy of location structure, especially even still can keep the location effect of high accuracy under the processing environment of high-speed motion, machine tool adds man-hour, can obtain high stability, high efficiency and high accuracy's processing effect simultaneously.

It is understood that the horizontal machine further includes a frame 500 and a table 600, the fixture 101 is provided to the frame 500, the frame 500 is provided with a reinforcement frame 510, and the table 600 is mounted to the reinforcement frame 510. The machining table 600 is used to hold a part to be machined.

It can be understood that, the fixing member 101, the reinforcing frame 510 and the frame 500 are of an integrated structure, and the fixing member 101, the reinforcing frame 510 and the frame 500 are of an integrated structure, so that errors caused by installation can be effectively reduced, the structural accuracy of the whole horizontal machine tool can be effectively improved, and the machining accuracy of the horizontal machine tool during machining can be improved.

It can be understood that the reinforcing frame 510 is a rectangular-square structure, and by providing the rectangular-square reinforcing frame 510, a mounting base with sufficient rigidity can be provided for the processing table 600, so that vibration generated during processing can be effectively reduced, stability of operation of the processing table 600 can be effectively ensured, and the processing table 600 can realize higher speed and more accurate operation.

It can be understood that the reinforced frame 510 is provided with a first rotating mechanism 511, the machining table 600 includes a rotating arm 610 and a second rotating mechanism 620, a stator of the second rotating mechanism 620 is connected to the rotating arm 610, a mover of the second rotating mechanism 620 is used for installing a clamp for clamping a part to be machined, the second rotating mechanism 620 is used for driving the clamp to rotate relative to the rotating arm 610, the stator of the first rotating mechanism 511 is connected to the reinforced frame 510, the mover of the first rotating mechanism 511 is connected to the rotating arm 610, the first rotating mechanism 511 is used for driving the rotating arm 610 to rotate relative to the reinforced frame 510, the first rotating mechanism 511 is perpendicular to the rotating shaft of the second rotating mechanism 620, and the clamp can be positioned in multiple dimensions through the machining table 600 so that the position of the part to be machined meets the machining requirement. The second rotation mechanism 620 and the first rotation mechanism 511 may be provided as a torque slewing motor, a slewing cylinder, or the like capable of realizing slewing drive.

It can be understood that, referring to fig. 3, the first rotating mechanism 511 is provided with one and rotates around the z-axis, the bottom of the rotating arm 610 is connected to the rotor of the first rotating mechanism 511, the center of gravity of the rotating arm 610 is vertically projected on the first rotating mechanism 511, the reinforcing frame 510 is further provided with a rotating bearing, the rotating bearing is connected to the top of the rotating arm 610, that is, two opposite ends of the rotating arm 610 are respectively connected to the reinforcing frame 510 through the first rotating mechanism 511 and the rotating bearing, so that the stability of the movement of the rotating arm 610 during the movement can be effectively improved, and further the reliability of the position adjusting movement of the part to be processed can be improved.

It can be understood that, referring to fig. 4, in addition to one first rotating mechanism 511 configured to rotate around the z-axis, two first rotating mechanisms 511 may also be configured to rotate around the x-axis, the movers of the two first rotating mechanisms 511 are respectively connected to two opposite ends of the rotating arm 610, and the rotating arm 610 can realize cradle-type motion under the driving of the two first rotating mechanisms 511.

It can be understood that the horizontal machine tool further comprises a tool magazine 700, the tool magazine 700 is used for storing tools, the tool magazine 700 is connected to the machine frame 500, and the tool magazine 700 is arranged right above the machining table 600, so that the space can be effectively saved, the compactness of the horizontal machine tool can be improved, the tool changing operation can be simplified, and the machining efficiency can be improved.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A machine tool positioning structure, comprising:

a fixing member;

the first positioning component comprises a first movable piece and at least two first linear guide rails, the gravity center of the first movable piece is located in a first space formed by all the first linear guide rails in a surrounding mode, each first linear guide rail is connected with the fixed piece and the first movable piece, and the first linear guide rails are used for limiting the movement path of the first movable piece to be parallel to a first direction;

the second positioning assembly comprises a second moving part and at least two second linear guide rails, the center of gravity of the second moving part is located in a second space formed by all the second linear guide rails in a surrounding mode, each second linear guide rail is connected with the first moving part and the second moving part, and the second linear guide rails are used for limiting the motion path of the second moving part to be parallel to the second direction;

the third positioning assembly comprises a third moving part and at least two third linear guide rails, the center of gravity of the third moving part is located in a third space formed by all the third linear guide rails in a surrounding mode, each third linear guide rail is connected with the second moving part and the third moving part, and the third linear guide rails are used for limiting the movement path of the third moving part to be parallel to a third direction;

a main shaft connected to the third movable member.

2. The machine tool positioning structure according to claim 1, wherein the number of the first linear guides is three, the first space surrounded by the three first linear guides is triangular prism-shaped, and the center of gravity of the first movable member is located at a central axis of the first space.

3. The machine tool positioning structure according to claim 1, wherein the first positioning assembly further comprises a first driving mechanism, a mover of the first driving mechanism is connected to the first movable member, the first driving mechanism is configured to drive the first movable member to move along a first direction, and a center of gravity of the first movable member is projected on a driving path of the first driving mechanism.

4. The machine tool positioning structure according to claim 1, wherein the second linear guide is provided with four second linear guides, the second space surrounded by the four second linear guides is quadrangular, and the center of gravity of the second movable member is located at a central axis of the second space.

5. The machine tool positioning structure of claim 1, wherein the second positioning assembly further comprises two second driving mechanisms, a stator of the second driving mechanism is connected to the first movable member, a rotor of the second driving mechanism is connected to the second movable member, the second driving mechanism is used for driving the second movable member to move along the second direction, and the two second driving mechanisms are located on two opposite sides of the center of gravity of the second movable member.

6. The machine tool positioning structure according to claim 1, wherein the third linear guide is four, the third space surrounded by four of the third linear guides is quadrangular, the center of gravity of the third movable member is located at a central axis of the third space, and the main shaft is located at a central axis of the third space.

7. The machine tool positioning structure according to claim 1, wherein the third positioning assembly further comprises a third driving mechanism, a stator of the third driving mechanism is connected to the second movable member, a rotor of the third driving mechanism is connected to the third movable member, the third driving mechanism is configured to drive the third movable member to move along a third direction, and a center of gravity of the third movable member is projected onto a driving path of the third driving mechanism.

8. The machine tool positioning structure of claim 1 wherein the stationary member, the first movable member, and the second movable member are each a chevron-shaped structure.

9. A horizontal machine tool comprising a machine tool positioning structure according to any one of claims 1 to 8.

10. The horizontal machine tool according to claim 9, further comprising a frame and a processing table, wherein the fixing member is disposed on the frame, the frame is provided with a reinforcing frame, the processing table is mounted on the reinforcing frame, and the reinforcing frame is of a zigzag structure.

Images