阅读说明：本技术 一种带有行星式交换工作台的数控机床 (Numerical control machine tool with planetary exchange workbench ) 是由 蔚飞 李志仁 王岱 侯照伟 刘江 于 2018-08-09 设计创作，主要内容包括：本发明涉及一种带有行星式交换工作台的数控机床,由床身、滑枕、X滑动板、机头组件、行星式交换工作台、对刀仪和刀库组成,床身后部设置有两个支撑墙体,滑枕架设于两个支撑墙体之间,并在第一驱动装置作用下,可沿Y轴进行往复进给运动；X滑动板滑动安装于滑枕上,可在第二驱动装置作用下沿X轴进行往复进给运动；机头组件安装于X滑动板上,并可在第三驱动装置作用下沿Z轴进行上下往复进给运动；床身前部上端面设置有可任意角度交互转动的行星式交换工作台；对刀仪和刀库分别安装于床身上,并设置于两个支撑墙体的中间位置。本发明结构简单,占地面积小,刚性好,交换速度快,既能够实现三轴加工,又能实现极坐标加工。(The invention relates to a numerical control machine tool with a planetary exchange workbench, which consists of a machine body, a ram, an X sliding plate, a machine head assembly, a planetary exchange workbench, a tool setting gauge and a tool magazine, wherein two supporting wall bodies are arranged at the rear part of the machine body; the X sliding plate is slidably arranged on the ram and can perform reciprocating feeding motion along the X axis under the action of a second driving device; the machine head assembly is arranged on the X sliding plate and can perform reciprocating feeding motion up and down along the Z axis under the action of a third driving device; a planetary exchange workbench capable of rotating alternately at any angle is arranged on the upper end surface of the front part of the lathe bed; the tool setting instrument and the tool magazine are respectively arranged on the lathe bed and are arranged in the middle of the two supporting wall bodies. The three-axis machining device has the advantages of simple structure, small occupied area, good rigidity and high exchange speed, and can realize three-axis machining and polar coordinate machining.)

1. A numerical control machine tool with a planetary exchange workbench is characterized by comprising a machine body, a ram, an X sliding plate, a machine head assembly, the planetary exchange workbench, a tool setting gauge and a tool magazine, wherein two parallel supporting walls which are distributed at intervals from left to right are arranged at the rear part of the machine body, and a group of longitudinal guide rails is arranged on each supporting wall; the ram is erected between the two supporting walls, is slidably mounted on the two groups of longitudinal guide rails, and can perform reciprocating feeding motion along the Y axis under the action of the first driving device; the X sliding plate is slidably arranged on the ram and can perform reciprocating feeding motion along the X axis under the action of a second driving device; the machine head assembly is arranged on the X sliding plate, can perform reciprocating feeding motion along the X axis along with the X sliding plate, and can perform reciprocating feeding motion up and down along the Z axis under the action of a third driving device; a planetary exchange workbench capable of rotating alternately at any angle is arranged on the upper end surface of the front part of the lathe bed; the tool setting instrument and the tool magazine are respectively arranged on the lathe bed and are arranged in the middle of the two supporting wall bodies.

2. The numerical control machine with the planetary exchange workbench according to claim 1, characterized in that the planetary exchange workbench is composed of an exchange main body, a rotating table, a direct-drive rotating workbench and a rotating table clapboard, wherein the rotating table is arranged on the exchange main body and can realize the interactive rotation at any angle under the action of the exchange main body; a plurality of working positions are uniformly distributed on the rotating table, a group of direct-drive rotating working tables are arranged on each working position, and a rotating table partition plate is arranged between the working positions; the direct-drive rotary worktable is a single-shaft direct-drive rotary worktable or a double-shaft direct-drive rotary worktable.

3. The numerical control machine with the planetary exchange workbench according to claim 2, wherein the exchange main body is composed of a base, a direct drive motor stator, a direct drive motor rotor, a bearing, a central shaft, a holding device, an adapter plate, an encoder, an upper cover and a lower cover, the base is fixed on a lathe bed, the central shaft is supported in the base through the bearing, and the upper part of the central shaft is connected with a rotating table; the direct-drive motor stator is internally sleeved on the base, the direct-drive motor rotor is arranged on the central shaft, and the direct-drive motor rotor can drive the central shaft to rotate under the action of the direct-drive motor stator; the holding device is arranged in the base through the adapter plate and can hold the central shaft tightly to force the central shaft to stop rotating; the encoder is arranged on the adapter plate and used for feeding back the accurate position of the central shaft; an upper cover and a lower cover which can be used for internal sealing are respectively arranged at the top and the bottom of the base.

4. A numerically controlled machine tool with planetary exchange table according to claim 1, 2 or 3, characterized in that said ram is provided with a first guide rail, a second guide rail and a third guide rail mounted in parallel, the first guide rail and the second guide rail are located on the upper surface of the ram, the third guide rail is located in the front vertical surface of the ram, and the X sliding plate slides on the first guide rail, the second guide rail and the third guide rail through the sliding block respectively.

5. A numerically controlled machine tool with planetary exchange table according to claim 1, 2 or 3, characterized in that said head assembly is composed of a mounting plate fixed to the X-slide plate, a slide assembly, a spindle clamping sleeve and an electric spindle slidably mounted on the mounting plate by the slide assembly and capable of reciprocating up and down along the Z-axis by the third driving means.

6. A numerically controlled machine tool with planetary exchange table according to claim 4, characterized in that said head assembly is composed of a mounting plate fixed to the X sliding plate, a sliding assembly, a spindle clamping sleeve and an electric spindle, which is located in the spindle clamping sleeve and slidably mounted on the mounting plate by the sliding assembly, and can perform reciprocating up and down along the Z axis by the third driving means.

Technical Field

The invention belongs to the technical field of numerical control equipment, and particularly relates to a numerical control machine with a planetary exchange workbench.

Background

Along with the development of processing technology, the requirement on the processing efficiency of the numerical control machine tool is higher and higher, but in the equipment part and hardware processing industry, the processing of a plurality of workpieces only has a plurality of processes, some processes even have one process, the actual cutting time is shorter, the material dismounting time is equivalent to the cutting time and even longer, the duty ratio of the machine tool is poor, and the improvement of the production efficiency is seriously hindered. In order to reduce the auxiliary processing time occupied by material disassembly and assembly, a design scheme of a double-exchange workbench is usually adopted on a numerical control machine tool, the existing double-exchange workbench has two structures, namely a movable type and a rotary type, and the movable type double-exchange workbench is double-station, so that the miniaturization design of the machine tool is not easy to realize, and the protection effect is also difficult to ensure; although the rotary double-exchange workbench is easy to protect, the rotary double-exchange workbench is complex in driving structure, large in occupied area, poor in precision and rigidity, and the rotating angle is a fixed angle, so that the rotary double-exchange workbench is not beneficial to angle change and multi-station processing, and the rotary double-exchange workbench needs to be repeatedly lifted, dropped and the like in the exchange process to realize the positioning and loosening clamping, the action process is complicated, and the exchange efficiency is low. In addition, most of the existing double-exchange workbench machine tools can not realize polar coordinate processing and can not meet the processing requirements of complex curved surface or involute disc parts.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides the numerical control machine tool with the double exchange working tables, which has the advantages of simple structure, small occupied area, good rigidity and high exchange speed, and can realize both three-axis machining and polar coordinate machining.

In order to solve the technical problems, the invention is realized by the following technical scheme: a numerical control machine tool with a planetary exchange workbench comprises a machine body, a ram, an X sliding plate, a machine head assembly, a planetary exchange workbench, a tool setting gauge and a tool magazine, wherein two parallel supporting walls which are distributed at intervals from left to right are arranged at the rear part of the machine body, and a group of longitudinal guide rails is arranged on each supporting wall; the ram is erected between the two supporting walls, is slidably mounted on the two groups of longitudinal guide rails, and can perform reciprocating feeding motion along the Y axis under the action of the first driving device; the X sliding plate is slidably arranged on the ram and can perform reciprocating feeding motion along the X axis under the action of a second driving device; the machine head assembly is arranged on the X sliding plate, can perform reciprocating feeding motion along the X axis along with the X sliding plate, and can perform reciprocating feeding motion up and down along the Z axis under the action of a third driving device; a planetary exchange workbench capable of rotating alternately at any angle is arranged on the upper end surface of the front part of the lathe bed; the tool setting instrument and the tool magazine are respectively arranged on the lathe bed and are arranged in the middle of the two supporting wall bodies.

According to the numerical control machine tool with the planetary exchange workbench, the planetary exchange workbench consists of an exchange main body, a rotating table, a direct-drive rotating workbench and a rotating table partition plate, and the rotating table is arranged on the exchange main body and can realize interactive rotation at any angle under the action of the exchange main body; a plurality of working positions are uniformly distributed on the rotating table, a group of direct-drive rotating working tables are arranged on each working position, and a rotating table partition plate is arranged between the working positions; the direct-drive rotary worktable is a single-shaft direct-drive rotary worktable or a double-shaft direct-drive rotary worktable.

According to the numerical control machine tool with the planetary exchange workbench, the exchange main body consists of a base, a direct-drive motor stator, a direct-drive motor rotor, a bearing, a central shaft, a holding device, an adapter plate, a coder, an upper cover and a lower cover, the base is fixed on a lathe bed, the central shaft is supported inside the base through the bearing, and the upper part of the central shaft is connected with a rotating table; the direct-drive motor stator is internally sleeved on the base, the direct-drive motor rotor is arranged on the central shaft, and the direct-drive motor rotor can drive the central shaft to rotate under the action of the direct-drive motor stator; the holding device is arranged in the base through the adapter plate and can hold the central shaft tightly to force the central shaft to stop rotating; the encoder is arranged on the adapter plate and used for feeding back the accurate position of the central shaft; an upper cover and a lower cover which can be used for internal sealing are respectively arranged at the top and the bottom of the base.

Above-mentioned digit control machine tool with planetary change table, be provided with parallel arrangement's first guide rail, second guide rail and third guide rail on the ram, first guide rail and second guide rail are located the upper surface of ram, and the third guide rail is located the preceding vertical plane of ram, and the X sliding plate slides through the slider respectively and acts on first guide rail, second guide rail and third guide rail.

The machine head assembly consists of a mounting plate, a sliding assembly, a main shaft clamping sleeve and an electric main shaft, wherein the mounting plate is fixed on an X sliding plate, the electric main shaft is positioned in the main shaft clamping sleeve and is slidably mounted on the mounting plate through the sliding assembly, and the electric main shaft can perform vertical reciprocating feeding motion along a Z axis under the action of a third driving device.

Compared with the prior art, the invention has the beneficial effects that: the planetary exchange workbench structure is adopted, so that the interactive rotation at any angle can be realized, and the requirements of variable-angle and multi-station processing can be met; the exchange main body is directly driven by a direct drive motor, has no intermediate transmission error, high transmission precision, good rigidity and less occupied space; in addition, the actions such as lifting and falling are not generated in the exchange process, the action process is simple, and the exchange efficiency is high; meanwhile, four-axis or five-axis linkage machining can be realized, and the machining requirements of involute disc parts or complex curved surfaces can be met. In addition, the tool magazine and the tool setting gauge are arranged at the position of a cavity in the middle of the lathe bed, so that the space of the machine tool is fully utilized, the space occupation of the tool magazine and the tool setting gauge is reduced, the miniaturization design of the machine tool is facilitated, and the occupied area of the machine tool is effectively reduced.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the planetary exchange table structure of the present invention.

Fig. 3 is a schematic diagram of the internal structure of the exchange main body of the present invention.

Fig. 4 is a schematic view of a mounting structure for a head assembly of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in figure 1, the numerical control machine with the planetary exchange workbench of the invention consists of a machine body 1, a ram 2, an X sliding plate 3, a machine head assembly 4, a planetary exchange workbench 5, a tool setting gauge 6 and a tool magazine 7.

The bed body 1 comprises a bed body 11 and two supporting walls 12 arranged at the rear part of the bed body 11, wherein the supporting walls 12 are arranged in parallel and distributed at the left end and the right end of the bed body 11 at intervals; the support walls 12 are respectively provided with longitudinal guide rails 13. The ram 2 is erected between two support walls 12, is slidably mounted on two sets of longitudinal guide rails 13, and can perform reciprocating feeding motion along the Y axis under the action of a first driving device. The X slide plate 3 is slidably mounted on the ram 2 and can perform a reciprocating feed motion along the X axis by a second driving device. The machine head assembly 4 is arranged on the X sliding plate 3, can perform reciprocating feeding motion along the X axis along with the X sliding plate 3, and can perform reciprocating feeding motion up and down along the Z axis under the action of a third driving device. A planetary exchange workbench 5 is arranged in the middle of the front part of the bed body 11, and a tool setting gauge 6 and a tool magazine 7 are respectively arranged in the middle of two supporting walls 12 and are arranged on the bed body 11 in parallel front and back.

As shown in fig. 2 and 3 in conjunction, the planetary exchange table 5 is composed of an exchange body 51, a rotary table 52, a direct-drive rotary table 53, and a rotary table partition plate 54. The exchange main body 51 comprises a base 511, a central shaft 512, a bearing 513, a direct drive motor stator 514, a direct drive motor rotor 515, a clasping device 516, an adapter plate 517, an encoder 518, an upper cover 519 and a lower cover 520, wherein the base 511 is fixed on the bed body 11, and the central shaft 512 is supported inside the base 511 through the bearing 513; the direct drive motor stator 514 is sleeved on the base 511, the direct drive motor rotor 515 is arranged on the central shaft 512, and under the action of the direct drive motor stator 514, the direct drive motor rotor 515 can drive the central shaft 512 to rotate; the locking device 516 is installed inside the base 511 through an adapter plate 517, and can lock the central shaft 512 through the matching of the inner ring and the outer ring thereof, so as to force the central shaft 512 to stop rotating; the encoder 518 is arranged on the adapter plate 517 and can perform accurate position feedback on the central shaft 512; the top and bottom of the base 511 are also provided with an upper cover 519 and a lower cover 520, respectively, for internal sealing. The turntable 52 is mounted above the center shaft 512 and can rotate or stop along with the center shaft 512. The rotating table 52 is also symmetrically provided with two working positions, and each working position is provided with a direct-drive rotating table 53; the turntable partition plate 54 is disposed between the two direct-drive rotary tables 53, and partitions the two direct-drive rotary tables 53 into a processing area and a non-processing area, respectively.

As shown in fig. 4, the head assembly 4 comprises a mounting plate 41, a sliding assembly 42, a spindle clamping sleeve 43 and an electric spindle 44, wherein the mounting plate 41 is fixed on the X sliding plate 3, the electric spindle 4 is locked on the sliding assembly 42 through the spindle clamping sleeve 43 and is slidably mounted on the mounting plate 41, and can perform reciprocating feeding motion up and down along the Z axis under the action of a third driving device 45. In order to improve the shock resistance of the installation of the machine head, a first guide rail 21, a second guide rail 22 and a third guide rail 23 which are installed in parallel are arranged on the ram 2, the first guide rail 21 and the second guide rail 22 are located on the upper surface of the ram 2, the third guide rail 23 is located in the front vertical surface of the ram 2, and the X sliding plate 3 respectively acts on the first guide rail 21, the second guide rail 22 and the third guide rail 23 through the sliding of a sliding block in a sliding mode. After the head assembly 4 is installed, the head assembly is equivalently seated and stood on the ram 2, the capability of bearing the gravity and the impact force in all directions is greatly enhanced, and the integral vibration resistance can be effectively improved.

When the planetary exchange workbench 5 works, a direct-drive rotating workbench 53 of the planetary exchange workbench 5 is positioned in a machining area and is matched with the electric spindle 4, so that polar coordinate multi-axis linkage machining of a workpiece can be realized; and the other direct-drive rotary worktable 53 is positioned in a non-processing area and can carry out loading and unloading actions on the same. After the workpieces in the machining area are machined, the central shaft 512 is loosened by the holding device 516 in the planetary exchange workbench 5, the direct-drive motor stator 514 directly drives the direct-drive motor rotor 515 to drive the central shaft 512 and the rotating table 52 to rotate 180 degrees, position exchange of the two direct-drive rotating workbenches 53 is realized, and then the central shaft 512 is held tightly by the holding device 516, so that high-rigidity locking of the planetary exchange workbench 5 is realized, and the encoder 518 accurately positions the central shaft 512 in the whole movement process. After the exchange is completed, the direct-drive rotary worktable 53 switched to the processing area works to process the next workpiece, and the workpiece switched to the non-processing area and processed can perform blanking action to continue to perform preparation work before processing such as loading, positioning, clamping and the like on the next workpiece. When the workpieces in the processing area are processed, the exchange action of the planetary exchange workbench 5 is started again and is circulated in sequence, the auxiliary processing time is greatly shortened in the whole process, and the processing efficiency is improved.

When a tool changing action is needed in machining, the electric spindle 44 rises to a safe tool changing height under the action of the third driving device 45, the X sliding plate 3 drives the machine head assembly 4 to move to the middle position of the ram 2, and then the machine head assembly moves backwards along the Y axis along with the ram 2 to reach the tool changing position of the tool magazine 7, so that the tool changing action can be carried out; after tool changing is finished, the electric spindle 44 is lifted to a safe height, the ram 2 drives the X sliding plate 3 and the machine head assembly 4 to move forwards along the Y axis together, the X sliding plate reaches a tool setting position of the tool setting instrument 6, tool setting action is executed, after tool setting is finished, the ram 2 drives the moving plate 3 and the machine head assembly 4 to move forwards along the Y axis together, a machining area is reached, and after tool changing and tool setting actions are finished, a workpiece can be machined.

The workbench of the invention has no actions such as lifting and falling in the exchange process, thereby effectively improving the exchange efficiency, and having high positioning precision and good rigidity. The arrangement of the tool setting gauge and the tool magazine fully utilizes the space structure of the machine tool, reduces the occupied space and is beneficial to the miniaturization design of the machine tool.

Although the present invention has been described in detail hereinabove, the present invention is not limited thereto, and those skilled in the art can make various modifications in accordance with the principle of the present invention. Thus, modifications made in accordance with the principles of the present invention should be understood to fall within the scope of the present invention.