Machining center

Abstract

The utility model provides a machining center which comprises a base, a stand column, a milling head assembly, a turning head assembly and a working table, the milling head assembly and the turning head assembly are both installed on the stand column in a lifting mode, the working table is movably arranged on the base, and the milling head assembly and the turning head assembly both face the working table; a first driving mechanism is arranged to drive the milling head assembly to ascend and descend, and a second driving mechanism is arranged to drive the turning head assembly to ascend and descend; a tool magazine is further arranged on the stand column, and the milling head assembly is located between the tool magazine and the stand column. According to the machining center provided by the technical scheme, the situation that the turning head assembly and the milling head assembly share the same lifting mechanism is avoided, so that the machining center has the milling and turning functions, and the turning head assembly can ascend and descend at a Z axis at a high speed.

Description

Technical Field

[0001] The utility model relates to the technical field of processing equipment, in particular to a six-axis machining center. Background Art

[0002] The traditional milling-turning composite vertical machining center has five axes, and the milling process and the turning process share a Z-axis.

[0003] For example, please refer to Figure 1 , the patent with the authorization announcement number CN 208628852 U discloses that the cantilever column 2 includes a cantilever end and a column end. The cantilever end is located above the column end and forms an inverted L-shaped structure with the column end. The column end is fixed on the bed 1. To improve the rigidity of the cantilever column 2, a reinforcing rib is arranged between the cantilever end and the column end. The cross-slide table workbench 3 is installed on the bed 1, and the double-axis rotary workbench 4 is installed on the cross-slide table workbench 3 and can reciprocate in the front-back, left-right directions under the action of the X-axis drive system and the Y-axis drive system together with the cross-slide table workbench 3. The turning head 5 and the milling head 6 are arranged side by side on the front end face of the cantilever end and can reciprocate up and down along the Z-axis respectively. The turning tool magazine 7 and the milling tool magazine 8 with an automatic tool changer are respectively installed on the left and right sides of the cantilever column 2 corresponding to the turning head 5 and the milling head 6, and can realize the automatic tool change of the turning head 5 and the milling head 6.

[0004] However, in the above patent, both the milling processing component and the turning processing component are arranged on the same column surface of the column, and the processing difficulty of the column surface is large. In addition, the tool magazine arranged on the side usually needs to be provided with a separate tool changing arm for tool change, the tool change efficiency is not high, and it is not conducive to the simultaneous lifting of the milling processing component and the turning processing component.

[0005] Therefore, how to enable the machining center to have the functions of milling and turning while realizing the high-speed lifting of the turning process in the Z-axis is an urgent problem to be solved. Summary of the Utility Model

[0006] The utility model provides a machining center which can enable the machining center to have the functions of milling and turning while realizing the high-speed lifting of the turning process in the Z-axis.

[0007] The utility model provides a machining center, including a base, a column, a milling head assembly, a turning head assembly and a workbench. The milling head assembly and the turning head assembly are both installed on the column in a liftable manner. The workbench is movably arranged on the base. The milling head assembly and the turning head assembly both face the workbench;

[0008] A first driving mechanism is provided to drive the milling head assembly to lift, and a second driving mechanism is provided to drive the turning head assembly to lift;

[0009] A tool magazine is further provided on the column, and the milling head assembly is located between the tool magazine and the column.

[0010] In some feasible embodiments, the column includes a main body and a mounting split body. The mounting split body is mounted on the side of the column. The milling head assembly is mounted on the main body, and the turning head assembly is mounted on the mounting split body.

[0011] In some feasible embodiments, an adjusting mechanism is further included. The adjusting mechanism includes a mounting part and a telescopic adjusting part movably connected to the mounting part. The mounting part is fixedly arranged on the main body or the mounting split body. The telescopic adjusting part abuts against the mounting split body or the main body. A horizontal sliding groove is provided on the column for the horizontal adjusting movement of the mounting split body. The telescopic adjusting part adjusts the position of the turning head assembly relative to the main body by changing the position of the mounting part.

[0012] In some feasible embodiments, a vertically slidable slide plate is provided on the mounting split body; the second driving mechanism includes a linear motor. The linear motor includes a stator and a mover. The stator is fixed on the mounting split body, the slide plate is fixedly arranged on the mover, and the turning head assembly is fixedly arranged on the slide plate; and / or

[0013] A fixed cover, a movable cover, a guiding member and a guiding mating member are further included. The fixed cover covers the upper side of the turning head assembly. The movable cover covers the lower side of the turning head assembly. The movable cover has an opening for the turning tool holder of the turning head assembly to be exposed; the movable cover is telescopically arranged relative to the fixed cover. The movable cover has a partial cover body located inside the fixed cover; the guiding member and the guiding mating member are in guiding cooperation with each other, and one of them is arranged on the fixed cover and the other is arranged on the movable cover.

[0014] In some feasible embodiments, a tool magazine mounting frame is further included. The tool magazine is suspended in front of the column through a tool magazine fixing frame and is located above the milling head assembly; the tool magazine cooperates with the milling head assembly for tool change. The tool magazine mounting frame extends from the side of the column to the front of the column and is located above the mounting split body. The tool magazine is connected to the tool magazine mounting frame.

[0015] In some feasible embodiments, the main body is of a hollow structure; reinforcing rib structures are provided on both inner side walls of the main body. The reinforcing rib structures include horizontal reinforcing ribs, first inclined reinforcing ribs and second inclined reinforcing ribs. The angle between the first inclined reinforcing rib and the horizontal reinforcing rib is an acute angle, and the angle between the second inclined reinforcing rib and the horizontal reinforcing rib is an obtuse angle.

[0016] In some feasible embodiments, the mounting split body is of a frame structure and has a hollow part. The cross-sectional dimension of the mounting split body on the side close to the main body is smaller than the cross-sectional dimension of the mounting split body on the side far from the main body.

[0017] In some feasible embodiments, the turning head assembly further includes a magnetic protection member, which is disposed on the mounting split body. The magnetic protection member is located above the turning head assembly and is used to prevent the turning head assembly from falling relative to the mounting split body when the second driving mechanism loses power.

[0018] In some feasible embodiments, the machining center further includes a cross slide. The workbench is an AC turntable. The column is fixedly disposed on the base. The AC turntable is mounted on the base through the cross slide. The cross slide is disposed on the front side of the surface of the base, and the cross slide is spaced apart from the column.

[0019] In some feasible embodiments, the workbench is an AC turntable. The AC turntable is spaced apart from the column. The milling head assembly includes a spindle box and a spindle installed in the spindle box. The extending direction of the spindle is parallel to the column, and the spindle faces the AC turntable.

[0020] For the above machining center, by providing a column, a milling head assembly, a turning head assembly and a workbench, the milling head assembly and the turning head assembly are both installed on the column in a liftable manner. The workbench is movably disposed on the base. The milling head assembly and the turning head assembly both face the workbench. A first driving mechanism is provided to drive the milling head assembly to lift, and a second driving mechanism is provided to drive the turning head assembly to lift, thereby avoiding sharing the same lifting mechanism for the turning head assembly and the milling head assembly and enabling the milling head assembly to lift relative to the column at a high speed.

[0021] In addition, the column includes a main body and a mounting split body. The mounting split body is mounted on the side of the column. The milling head assembly is mounted on the main body, and the turning head assembly is mounted on the mounting split body, thereby avoiding both the milling head assembly and the turning head assembly being located on the front end face of the main body. The mounting split body and the turning head assembly are fixed to the side of the main body, ensuring the contact area between the mounting split body and the main body, ensuring the stability of the mounting of the mounting split body and the turning head assembly to the main body, and improving the space utilization rate of each surface of the main body. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0023] Figure 1Schematic diagram of a numerically controlled machine tool that can achieve non-rotary surface turning and milling compound machining provided for the prior art.

[0024] Figure 2 Schematic diagram of a machining center provided for an embodiment of the present invention.

[0025] Figure 3 Schematic diagram of the column and milling head assembly of the machining center provided for an embodiment of the present invention.

[0026] Figure 4 Internal schematic diagram of the side wall of the column of the machining center provided for an embodiment of the present invention.

[0027] Figure 5 Schematic diagram of the turning head assembly of the machining center provided for an embodiment of the present invention.

[0028] Figure 6 Schematic diagram of the column and turning head assembly of the machining center provided for an embodiment of the present invention.

[0029] Figure 7 Schematic diagram of the adjustment mechanism of the machining center provided for an embodiment of the present invention.

[0030] Explanation of Component Symbols

[0031] 100, base; 200, column; 210, body; 220, mounting split; 2201, slide plate; 221, fixed section; 222, extension section; 201, reinforcing rib structure; 2011, horizontal reinforcing rib; 2012, first inclined reinforcing rib; 2013, second inclined reinforcing rib; 300, milling head assembly; 301, first driving mechanism; 310, spindle; 320, spindle box; 400, turning head assembly; 401, second driving mechanism; 4011, stator; 4012, rotor; 402, fixed cover; 403, movable cover; 404, guide; 405, guide mating part; 410, magnetic protection part; 411, fixing part; 412, magnetic part; 413, moving part; 600, workbench; 700, adjustment mechanism; 710, mounting part; 720, telescopic adjustment part; 800, cross slide; 500, tool magazine; 501, tool magazine mounting rack; 900, locking mechanism.

[0032] The realization, functional features and advantages of the object of the present invention will be further described in conjunction with the embodiments with reference to the accompanying drawings. Detailed implementation manners

[0033] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0034] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0035] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] In order to have a clearer and more accurate understanding of the content of the present utility model, it will be described in detail below with reference to the drawings. The accompanying drawings of the specification show examples of the embodiments of the present utility model, in which the same reference numerals represent the same elements. It can be understood that the scale shown in the accompanying drawings of the specification is not the actual implementation scale of the present utility model. It is only for the purpose of schematic illustration and is not drawn according to the original size.

[0037] Please refer to Figure 2 and 3 , the present utility model provides a machining center, including a base 100, a column 200, a milling head assembly 300, a turning head assembly 400, and a workbench 600. The workbench 600 is movably arranged on the base 100, and the milling head assembly 300 and the turning head assembly 400 both face the workbench 600.

[0038] Please refer to Figure 2 , 3As shown in FIGS. 3 and 4, in order to improve the rigidity of the two side parts of the column 200, prevent the column 200 from deforming during turning on the machining center, and reduce the load on the same column surface of the column 200, the column 200 includes a main body 210 and a mounting sub - body 220. The mounting sub - body 220 is mounted on the side of the column 200. The main body 210 is of a hollow structure, and the mounting sub - body 220 is also of a hollow structure. Reinforcing rib structures 201 are provided on both inner side walls of the main body 210. The reinforcing rib structures 201 include transverse reinforcing ribs 2011, first inclined reinforcing ribs 2012, and second inclined reinforcing ribs 2013. The angle between the first inclined reinforcing rib 2012 and the transverse reinforcing rib 2011 is an acute angle, and the angle between the second inclined reinforcing rib 2013 and the transverse reinforcing rib 2011 is an obtuse angle. It can be understood that in this embodiment, the acute angle can be about 45°, and the obtuse angle can be about 135°.

[0039] Please refer to Figure 3 , the milling head assembly 300 and the turning head assembly 400 are both mounted on the column 200 in a liftable manner. Specifically, the milling head assembly 300 is slidably mounted on the front end face of the main body 210. The milling head assembly 300 can slide vertically relative to the main body 210 through a first driving mechanism 301. It can be understood that the milling head assembly 300 includes a spindle box 310. The width of the side of the spindle box 310 close to the column 200 is approximately equal to the width of the column 200, so as to ensure that the span between the two slide rails mounted on the front end face of the main body 210 can be as far as possible, thereby increasing the span between the two slide rails and ensuring the sliding stability between the spindle box 310 and the main body 210.

[0040] The machining center is provided with a first driving mechanism 301 to drive the milling head assembly 300 to lift, and a second driving mechanism 401 to drive the turning head assembly 400 to lift. In this embodiment, the milling head assembly 300 is mounted on the main body 210, and the turning head assembly 400 is mounted on the mounting sub - body 220. The first driving mechanism 301 is disposed between the main body 210 and the milling head assembly 300. The first driving mechanism 301 can include a motor, a lead screw and a nut assembly, with high driving accuracy. The second driving mechanism 401 is disposed between the turning head assembly 400 and the mounting sub - body 220. It can be understood that the second driving mechanism 401 can be a linear motor, with fast response.

[0041] Please refer to Figure 5, for example, the turning head assembly 400 can slide vertically relative to the mounting sub - body 220 through the second driving mechanism 401. The mounting sub - body 220 is fixedly connected to the side wall of the main body 210. The turning head assembly 400 extends to the front side of the main body 210 and is arranged side by side with the milling head assembly 300. Thus, the second driving mechanism 401 can be used to make the turning head assembly 400 slide rapidly up and down relative to the mounting sub - body 220 along the Z - axis (i.e., vertically), enabling the turning head assembly 400 to perform a planar turning machining operation with frequent interpolation along the Z - axis direction (the definition of interpolation will be described below).

[0042] Please refer to Figure 5 , in order to increase the contact area of the sliding between the turning head assembly 400 and the mounting sub - body 220 and improve the stability of the machining part sliding relative to the mounting sub - body 220, the cross - sectional dimension of the mounting sub - body 220 at the end close to the main body 210 is smaller than the cross - sectional dimension of the mounting sub - body 220 at the end far from the main body 210. It can be understood that the cross - section refers to the end face of the mounting sub - body 220 far from the main body 210, that is, the plane in which the slide plate 2201 extends vertically in the following text. The turning head assembly 400 is slidably mounted vertically at the end of the mounting sub - body 220 far from the main body 210. For example, the width of the end face of the mounting sub - body 220 close to the main body 210 is half of the width of the end face of the mounting sub - body 220 far from the main body 210, and the height of the end face of the mounting sub - body 220 close to the main body 210 is half of the height of the end face of the mounting sub - body 220 far from the main body 210. In this way, the cross - sectional dimension of the end face of the mounting sub - body 220 close to the main body 210 is 1 / 4 of the cross - sectional dimension of the end face of the mounting sub - body 220 far from the main body 210, enabling the mounting sub - body 220 to be stably and firmly connected to the main body 210 and providing a larger installation space for the turning head assembly 400.

[0043] Please refer to Figure 5 and 6 , the mounting sub - body 220 has a frame - shaped structure and has a hollow part. Specifically, the mounting sub - body 220 includes a fixed section 221 and an extension section 222 fixedly connected to the fixed section 221. The fixed section 221 is fixedly connected to the main body 210, and the extension section 222 is slidably connected to the turning head assembly 400. The inside of the fixed section 221 is in a hollow structure. The cross - sectional dimension of the fixed section 221 gradually increases from the end far from the extension section 222 to the end close to the extension section 222. On the one hand, the weight of the fixed section 221 is reduced, and on the other hand, the connection strength between the fixed section 221 and the main body 210 is ensured. The cross - sectional dimension of the extension section 222 far from the fixed section 221 is larger than the cross - sectional dimension of the extension section 222 close to the fixed section 221, so as to increase the installation span of the sliding track of the turning head assembly 400 on the extension section 222 and improve the stability of the sliding connection between the turning head assembly 400 and the extension section 222.

[0044] Please refer to Figure 5 ,on the installation unit 220, there is a vertically slidable skateboard 2201; the second driving mechanism 401 includes a linear motor, the linear motor includes a stator 4011 and a mover 4012, the stator 4011 is fixed on the installation unit 220, the skateboard 2201 is fixedly arranged on the mover 4012, and the turning head assembly 400 is fixedly arranged on the skateboard 2201. The second driving mechanism 401 between the turning head assembly 400 and the installation unit 220 is driven by a linear motor, which can accelerate the up and down lifting speed of the turning head assembly 400 along the Z-axis, has a high dynamic response, and can realize the interpolation action of the turning head assembly 400 in cooperation with the milling head assembly 300. Conventional lead screw drives cannot achieve such high-speed reciprocation. Therefore, the linear motor is selected as the driving source for the second driving mechanism 401. It can be understood that interpolation is a term in numerical control programming, and interpolation is the process of determining the tool movement trajectory.

[0045] Please refer to Figure 6 and 7 ,there are precise requirements for the installation position between the turning head assembly 400 and the main body 210. In order to facilitate the installation of the turning head assembly 400 to the predetermined position of the main body 210, it is necessary to finely adjust the position between the turning head assembly 400 and the main body 210. For example, the adjustment accuracy is 1-2 mm. Specifically, the machining center further includes an adjustment mechanism 700 and a locking mechanism 900. The adjustment mechanism 700 includes an installation part 710 and a telescopic adjustment part 720 movably connected to the installation part 710. The installation part 710 is fixedly arranged on the main body 210 or the installation unit 220, the telescopic adjustment part 720 abuts against the installation unit 220 or the main body 210, and the telescopic adjustment part 720 adjusts the position of the turning head assembly 400 relative to the main body 210 by changing the position of the installation part 710; in this embodiment, the telescopic adjustment part 720 is a bolt, and the installation part 710 is provided with an internal thread threadedly connected to the bolt. The adjustment accuracy of the bolt can be achieved by selecting bolts with different pitches. When in use, the locking mechanism 900 is in the unlocked state, and the turning head assembly 400 can move relative to the main body 210. When the bolt rotates one circle in the direction of the installation unit 220, the installation unit 220 moves a distance equal to one pitch relative to the main body 210. In some other embodiments, a horizontal sliding groove is provided on the column 200 for the horizontal adjustment and movement of the installation unit 220. Specifically, a horizontal sliding groove is provided on the right side wall of the column 200 for the horizontal adjustment and movement of the installation unit 220, so as to guide the horizontal movement of the installation unit 220 and prevent the installation unit 220 from shifting during the horizontal movement.

[0046] Please refer to Figure 6, the locking mechanism 900 is disposed between the main body 210 and the turning head assembly 400 to restrict displacement of the turning head assembly 400 relative to the main body 210. When the mounting sub-body 220 is moved into place relative to the main body 210, the mounting sub-body 220 and the main body 210 are locked together by the locking mechanism 900. It can be understood that the locking mechanism 900 can be a locking bolt. A kidney-shaped hole for connecting the locking bolt is provided on the mounting sub-body 220, and an internal thread cooperating with the locking bolt is provided on the main body 210. The locking bolt passes through the kidney-shaped hole and is fixed to the internal thread on the main body 210, thereby realizing the locking between the mounting sub-body 220 and the main body 210.

[0047] Please refer to Figure 5 , to avoid the risk that when the second driving mechanism 401 loses power, the turning head assembly 400 drops relative to the mounting sub-body 220 under the action of gravity, resulting in an impact between the turning head assembly 400 and the workpiece, the turning head assembly 400 further includes a magnetic protection member 410. The magnetic protection member 410 is disposed on the mounting sub-body 220. The magnetic protection member 410 is located above the turning head assembly 400 and is used to prevent the turning head assembly 400 from dropping relative to the mounting sub-body 220 when the second driving mechanism 401 loses power. It can be understood that when the second driving mechanism 401 loses power, it can be when the second driving mechanism 401 is powered off.

[0048] Please refer to Figure 5 , the magnetic protection member 410 includes a fixing member 411, a magnetic member 412, and a moving member 413; the fixing member 411 is fixedly connected to one end of the magnetic member 412, the moving member 413 is movably sleeved on the other end of the magnetic member 412, and a magnetic attraction force is generated between the moving member 413 and the magnetic member 412; one of the fixing member 411 and the moving member 413 is fixed to the mounting sub-body 220, and the other is fixed to the turning head assembly 400; when the second driving mechanism 401 loses power, a magnetic attraction force is generated between the moving member 413 and the magnetic member 412, and the magnetic member 412 is a permanent magnet. For example, the magnetic protection member 410 can be a magnetic spring, and the magnetic spring automatically rebounds permanently to prevent the turning head assembly 400 from directly dropping relative to the mounting sub-body 220 when power is off or an emergency stop occurs. In addition, the magnetic protection member 410 can also be other types of power-off support mechanisms, as long as it can support the turning head assembly 400 when the second driving mechanism 401 is powered off, it belongs to the magnetic protection member 410.

[0049] Please refer to Figure 2, in order to enable the machining center to have the function of six-axis machining, the machining center further includes a cross slide 800. The workbench 600 is an AC turntable. The column 200 is fixedly arranged on the base 100. The AC turntable is installed on the base 100 through the cross slide 800. The cross slide 800 is arranged on the front side of the surface of the base 100, and the cross slide 800 is arranged at an interval from the column 200.

[0050] Please refer to Figure 2 , in order to facilitate the machining head assembly 300 to perform machining of different processes on the workpiece, a tool magazine 500 is further provided on the column 200. In this embodiment, the tool magazine 500 can be a swashplate type. The tool change efficiency of the swashplate type tool magazine Figure 1 is higher than that of the vertical tool magazine in

[0051] . The milling machining head assembly 300 is located between the tool magazine 500 and the column 200. The tool magazine 500 is fixed on the column 200 and is located above the milling machining head assembly 300. The tool magazine 500 cooperates with the milling machining head assembly 300 for tool change. In this embodiment, the tool magazine 500 is fixed at the top of the column 200, and a tool striking block is further provided at the top of the column 200. When the milling machining head assembly 300 rises to the top of the column 200, the tool striking cylinder of the milling machining head assembly 300 cooperates with the tool striking block to feed the tool. The tool magazine 500 rotates to send a new tool to the milling machining head assembly 300. The milling machining head assembly 300 disengages from the tool striking block to load a new tool and perform machining of a new process.

[0052] Please refer to Figure 5 and 6, the machining center further includes a fixed cover 402, a movable cover 403, a guide member 404 and a guide mating member 405. The fixed cover 402 covers the upper side of the turning head assembly 400. The movable cover 403 covers the lower side of the turning head assembly 400. The movable cover 403 has an opening for exposing the tool holder of the turning head assembly 400. The movable cover 403 is telescopically arranged relative to the fixed cover 402. The movable cover 403 has a partial cover body located inside the fixed cover 402. The guide member 404 and the guide mating member 405 are in guiding cooperation with each other, and one of them is arranged on the fixed cover 402 and the other is arranged on the movable cover 403.

[0053] Please refer to Figure 2 , the machining center can be a vertical machining center. For example, the milling head assembly 300 includes a spindle box 310 and a spindle 310 installed in the spindle box 310. The extending direction of the spindle 310 is parallel to the column 200. The spindle 310 faces the AC turntable. The AC turntable is spaced from the column 200. In the vertical machining center, the side surfaces of the base 100, the cross slide 800, the AC turntable, the column 200 and the milling head assembly 300 form a C-shaped mechanism, so that the vertical cutting force applied by the spindle 310 to the workpiece can be absorbed by the AC turntable, the cross slide 800 and the base 100, improving the machining accuracy.

[0054] During use, the machining center drives the milling head assembly 300 to machine the workpiece through the first driving mechanism 301. The second driving mechanism 401 uses a linear motor, which can accelerate the up and down movement speed of the turning head assembly 400 along the Z axis, has a high dynamic response, and can realize the interpolation movement of the turning head assembly 400 in cooperation with the milling head assembly 300. When the second driving mechanism 401 loses power, the magnetic protection member 410 arranged between the mounting body 220 and the turning head assembly 400 can prevent the turning head assembly 400 from falling relative to the mounting body 220, preventing the turning head assembly 400 from falling relative to the mounting body 220 only under the action of gravity when the second driving mechanism 401 loses power, resulting in the risk of the turning head assembly 400 hitting the workpiece.

[0055] In the above-mentioned machining center, by providing the column 200, the milling head assembly 300, the turning head assembly 400 and the workbench 600, the milling head assembly 300 and the turning head assembly 400 are both liftably installed on the column 200. A first driving mechanism 301 is provided to drive the milling head assembly 300 to lift, and a second driving mechanism 401 is provided to drive the turning head assembly 400 to lift, thereby avoiding the turning head assembly 400 and the milling head assembly 300 sharing the same lifting mechanism and enabling the milling head assembly 300 to lift relative to the column 200 at a high speed.

[0056] In addition, the column 200 includes a main body 210 and a mounting sub - body 220. The mounting sub - body 220 is mounted on the side of the column 200. The milling head assembly 300 is mounted on the main body 210, and the turning head assembly 400 is mounted on the mounting sub - body 220, so as to avoid both the milling head assembly 300 and the turning head assembly 400 being located on the front end face of the main body 210. The mounting sub - body 220 and the turning head assembly 400 are fixed to the side of the main body 210, ensuring the contact area between the mounting sub - body 220 and the main body 210, ensuring the stability of the installation of the mounting sub - body 220 and the turning head assembly 400 with the main body 210, and improving the space utilization rate of each surface of the main body 210.

[0057] Obviously, those skilled in the art can make various changes and modifications to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalent technologies, the present utility model also intends to include these changes and modifications.

[0058] The above - listed are only the preferred embodiments of the present utility model. Certainly, the scope of the rights of the present utility model cannot be limited thereby. Therefore, equivalent changes made according to the claims of the present utility model still fall within the scope covered by the present utility model.

Claims

1. A machining center, characterized in that, It includes a base (100), a column (200), a milling head assembly (300), a turning head assembly (400) and a workbench (600). The milling head assembly (300) and the turning head assembly (400) are both installed on the column (200) in a liftable manner. The workbench (600) is movably arranged on the base (100). The milling head assembly (300) and the turning head assembly (400) both face the workbench (600). A first driving mechanism (301) is provided to drive the milling head assembly (300) to lift, and a second driving mechanism (401) is provided to drive the turning head assembly (400) to lift. A tool magazine (500) is further provided on the column (200), and the milling head assembly (300) is located between the tool magazine (500) and the column (200).

2. The machining center according to claim 1, characterized in that, The column (200) includes a main body (210) and a mounting sub - body (220). The mounting sub - body (220) is installed on the side of the column (200). The milling head assembly (300) is installed on the main body (210), and the turning head assembly (400) is installed on the mounting sub - body (220).

3. The machining center according to claim 2, characterized in that, It further includes an adjusting mechanism (700). The adjusting mechanism (700) includes a mounting part (710) and a telescopic adjusting part (720) movably connected to the mounting part (710). The mounting part (710) is fixedly arranged on the main body (210) or the mounting sub - body (220), and the telescopic adjusting part (720) abuts against the mounting sub - body (220) or the main body (210). A horizontal sliding groove is provided on the column (200) for the horizontal adjustment and movement of the mounting sub - body (220). The telescopic adjusting part (720) adjusts the position of the turning head assembly (400) relative to the main body (210) by changing the position of the mounting part (710).

4. The machining center according to claim 2, characterized in that, A vertically slidable sliding plate (2201) is provided on the mounting sub - body (220); The second driving mechanism (401) includes a linear motor. The linear motor includes a stator (4011) and a mover (4012). The stator (4011) is fixed on the mounting sub - body (220), the sliding plate (2201) is fixedly arranged on the mover (4012), and the turning head assembly (400) is fixedly arranged on the sliding plate (2201); and / or It further includes a fixed cover (402), a movable cover (403), a guide member (404) and a guide mating member (405). The fixed cover (402) covers the upper side of the turning head assembly (400). The movable cover (403) covers the lower side of the turning head assembly (400). The movable cover (403) has an opening for exposing the tool holder of the turning head assembly (400). The movable cover (403) is telescopically arranged relative to the fixed cover (402), and the movable cover (403) has a partial cover body located inside the fixed cover (402). The guide member (404) and the guide mating member (405) are in guiding cooperation with each other, and one of them is arranged on the fixed cover (402), and the other is arranged on the movable cover (403).

5. The machining center according to claim 2, characterized in that, It further includes a tool magazine mounting bracket (501). The tool magazine (500) is suspended in front of the column (200) through the tool magazine mounting bracket (501) and is located above the milling head assembly (300). The tool magazine (500) is in tool changing cooperation with the milling head assembly (300). The tool magazine mounting bracket (501) extends from the side of the column (200) to the front side of the column (200) and is located above the mounting split body (220). The tool magazine (500) is connected to the tool magazine mounting bracket (501).

6. The machining center according to claim 2, wherein The main body (210) has a hollow structure. Reinforcing rib structures (201) are provided on both inner side walls of the main body (210). The reinforcing rib structure (201) includes a transverse reinforcing rib (2011), a first inclined reinforcing rib (2012), and a second inclined reinforcing rib (2013). The angle between the first inclined reinforcing rib (2012) and the transverse reinforcing rib (2011) is an acute angle, and the angle between the second inclined reinforcing rib (2013) and the transverse reinforcing rib (2011) is an obtuse angle.

7. The machining center according to any one of claims 2-6, characterized in that The mounting split body (220) has a frame structure and has a hollow part. The cross-sectional dimension of the mounting split body (220) on the side close to the main body (210) is smaller than the cross-sectional dimension of the mounting split body (220) on the side far from the main body (210).

8. The machining center according to any one of claims 2-6, characterized in that, The turning head assembly (400) further includes a magnetic protection member (410). The magnetic protection member (410) is arranged on the mounting split body (220). The magnetic protection member (410) is located above the turning head assembly (400) and is used to prevent the turning head assembly (400) from falling relative to the mounting split body (220) when the second driving mechanism (401) loses power.

9. The machining center according to any one of claims 1-6, characterized in that, The machining center further includes a cross slide (800). The workbench (600) is an AC turntable. The column (200) is fixedly arranged on the base (100). The AC turntable is mounted on the base (100) through the cross slide (800). The cross slide (800) is arranged on the front side of the surface of the base (100), and the cross slide (800) is spaced from the column (200).

10. The machining center according to any one of claims 1-6, characterized in that, The workbench (600) is an AC turntable, the AC turntable is arranged at an interval from the column (200), the milling head assembly (300) includes a spindle box (320) and a spindle (310) installed in the spindle box (320), the extending direction of the spindle (310) is parallel to the column (200), and the spindle (310) faces the AC turntable.

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