Numerically-controlled machine tool suitable for small-range machining of large workpieces

Abstract

The invention provides a numerical control machine tool suitable for small-range machining of large workpieces. The numerical control machine tool comprises a machine shell, a workbench, a movable support and a machining main shaft, wherein the workbench extends in the X-axis direction and forms a machining section and an extending section, and the extending section of the workbench is arranged to be used for prolonging the placement length of a workpiece, so that the placement of the large workpiece is realized; the movable support is arranged on one side of the machining section, and the machining main shaft is assembled on the movable support in a lifting mode. A side door corresponding to the extending section of the workbench is arranged on one side of the machine shell in the X-axis direction. According to the numerical control machine tool, large workpieces can be machined in a small range, small workpieces can also be normally machined, the utilization rate is high, waste does not exist, and the embarrassing situation that the numerical control machine tool only needs to machine the large workpieces in the small range is well solved.

Description

Technical Field

[0001] The invention relates to the field of numerically controlled machine tools, and in particular to a numerically controlled machine tool suitable for machining large workpieces in a small range. Background Art

[0002] CNC machine tool is the abbreviation of digital control machine tool, which is an automated machine tool equipped with a program control system. In the existing technology, CNC machine tools are small in size and small in processing range, which are very suitable for processing small workpieces (less than two meters in length). Large workpieces (such as those with a length of two meters or more) require gantry machines for processing; during processing operations, large workpieces will be processed in a small range; for manufacturers of CNC machine tools, gantry machines are expensive, and the cost-effectiveness of adding a gantry machine alone is not high (mainly because the utilization rate is not high, resulting in waste). Summary of the invention

[0003] Therefore, in order to solve the above problems, the present invention provides a CNC machine tool suitable for small-scale processing of large workpieces.

[0004] To achieve the above purpose, the technical solution provided by the present invention is as follows:

[0005] A numerically controlled machine tool suitable for small-scale processing of large workpieces comprises a casing, a workbench, a movable bracket and a processing spindle arranged in the casing; the workbench extends along the X-axis direction and forms a processing section and an extension section, the movable bracket is arranged on one side of the processing section, and the processing spindle is assembled on the movable bracket in a liftable manner; a side door corresponding to the extension section of the workbench is arranged on one side of the casing in the X-axis direction.

[0006] Furthermore, the movable bracket includes a fixed seat extending along the X-axis direction, a mounting seat extending along the Y-axis direction, an X-axis driver, a Y-axis driver and a column. The mounting seat can be slidably assembled on the fixed seat along the X-axis direction, and the X-axis driver is driven to connect the mounting seat; the column can be slidably assembled on the mounting seat along the Y-axis direction, and the Y-axis driver is driven to connect the column, and the machining spindle can be raised and lowered and assembled on the column.

[0007] Furthermore, the X-axis driver and the Y-axis driver are both screw drivers.

[0008] Furthermore, it also includes a support base, which has an inclined upper surface and a plurality of support platforms arranged on the inclined upper surface, and the workbench is fixedly installed on the plurality of support platforms; the inclined upper surface is inclined toward one side of the Y-axis direction; the plurality of support platforms are arranged at intervals along the X-axis direction; and the support platforms are provided with lifting holes.

[0009] Furthermore, it also includes a debris collection device, which is arranged on one side of the support base and corresponds to the lower side of the inclined upper surface; the output end of the debris collection device extends outside the casing.

[0010] Furthermore, the housing has a clearance window for the machining spindle to move along the X-axis direction, and the side frame of the clearance window is connected to the movable bracket through a retractable shield, and the shield is inclined toward the side of the workbench.

[0011] Furthermore, the shield is obtained by telescopically sleeve-connecting a plurality of shield pieces, and two adjacent shield pieces are provided with brushes extending into a fitting gap between the two pieces.

[0012] Furthermore, the side door can be slidably mounted on a support frame of the casing, and the side door and the support frame of the casing are connected via a telescopic drive.

[0013] Furthermore, the casing includes a first part and a second part, the first part corresponds to the processing section, movable bracket and processing spindle of the workbench; the second part corresponds to the extension section of the workbench; the height of the second part is lower than that of the first part; the side door is composed of a first side panel of the first part facing the second part, a top panel constituting the second part and a second side panel constituting the second part; a sliding door for lateral sliding is provided on the front side of the first part.

[0014] Furthermore, it also includes a tool magazine support and a tool magazine, wherein the tool magazine support is a floor-standing structure and is fixed on one side of the movable support, and the tool magazine is installed on the tool magazine support to correspond to the machining spindle.

[0015] The technical solution provided by the present invention has the following beneficial effects:

[0016] 1. The workbench extends along the X-axis direction to form a processing section and an extension section. The extension section of the workbench is used to extend the placement length of the workpiece to achieve the placement of large workpieces; the movable bracket is set on one side of the processing section, and the processing spindle can be assembled on the movable bracket to achieve small-scale processing of large workpieces. In this way, the CNC machine tool can not only process large workpieces in a small range, but also perform normal processing on small workpieces. The utilization rate is high and there is no waste. It well solves the embarrassing situation that the CNC machine tool encounters a large workpiece but only needs to process a small range.

[0017] 2. The casing is provided with a side door corresponding to the extension section of the workbench on one side of the X-axis direction. By opening the side door, a hoisting channel can be opened on the side of the casing to facilitate the placement of large workpieces along the X-axis direction by hoisting.

[0018] 3. It also includes a support base, which has an inclined upper surface and a plurality of support platforms arranged on the inclined upper surface, and the workbench is fixedly installed on the plurality of support platforms; the inclined upper surface is inclined toward one side of the Y-axis direction; the plurality of support platforms are arranged at intervals along the X-axis direction; and the support platforms are provided with lifting holes; with such an arrangement, the debris generated by the processing of the workpiece on the workbench can be discharged in time through the guidance of the inclined upper surface.

[0019] 4. Furthermore, it also includes a debris collection device, which is arranged on one side of the support base and corresponds to the lower side of the inclined upper surface; the output end of the debris collection device extends outside the housing, so that the debris can be discharged in time.

[0020] 5. The housing has a clearance window for the machining spindle to move along the X-axis direction. The side frame of the clearance window is connected to the movable bracket through a retractable shield to ensure that debris can be effectively blocked; the shield is inclined toward the side of the workbench so that debris can slide off. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The figure shows the appearance of a CNC machine tool suitable for processing large workpieces in a small area in the embodiment. Figure 1 ;

[0022] Figure 2 The figure shows the appearance of a CNC machine tool suitable for processing large workpieces in a small area in the embodiment. Figure 2 ;

[0023] Figure 3 The figure shows the internal structure behind the hidden part of the casing of a CNC machine tool suitable for processing large workpieces in a small range in the embodiment;

[0024] Figure 4 Shown is a schematic diagram of a portion of the internal structure of a CNC machine tool suitable for small-scale processing of large workpieces in an embodiment.

[0025] Figure 5 The figure shows the state of opening the side door of a CNC machine tool suitable for processing a large workpiece in a small area in the embodiment. Figure 3 . DETAILED DESCRIPTION

[0026] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0027] In the description of the present invention, terms such as "up", "down", "left", "right", "front", "back", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, 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, and therefore cannot be understood as a limitation of the present invention.

[0028] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0029] Reference Figures 1 to 5 As shown, the present embodiment provides a CNC machine tool suitable for small-scale processing of large workpieces, including a housing 100 and a workbench 10, a movable bracket 20 and a processing spindle 30 arranged in the housing 100; wherein the workbench 10 extends along the X-axis direction (left-right direction in the present embodiment) and forms a processing section 11 and an extension section 12, that is, the workbench 10 is a long strip structure extending along the X-axis direction, and is divided into the processing section 11 and the extension section 12 in sequence along the X-axis direction; as in the present embodiment, the length of the workbench 10 extending along the X-axis direction is 2 meters, wherein the length of the processing section 11 is 0.5 meters, and the length of the extension section 12 is 1.5 meters.

[0030] The movable bracket 20 is arranged on one side of the processing section 11, and the processing spindle 30 can be assembled on the movable bracket 20 in a lifting manner; in this way, the processing spindle 30 can correspond to the processing section 11 of the workbench 10. In this way, when processing, the workpiece is placed on the workbench 10, specifically, the part to be processed is placed on the processing section 11 of the workbench 10, and the part of the large workpiece that does not need to be processed is placed on the extension section 12; the CNC machine tool can control the processing spindle 30 to process the workpiece. The CNC machine tool can process a small range of large workpieces, and can also perform normal processing on small workpieces (small workpieces can be placed normally on the processing section 11 of the workbench 10). The utilization rate is high, there is no waste, and it well solves the embarrassing situation that the CNC machine tool encounters a large workpiece but only needs to process a small range.

[0031] Since there is no need to set a machining spindle 30 above the extension section 12 of the workbench 10, in this embodiment, the housing 10 is provided with a side door 103 corresponding to the extension section 12 of the workbench 10 on one side of the X-axis direction. With this arrangement, the side door 103 can be opened on the side of the housing 10 to form an opening 108 on the side of the housing 10 in the X-axis direction. In this way, it is convenient to place a large workpiece directly in the X-axis direction by hoisting.

[0032] Furthermore, in the present embodiment, the movable bracket 20 includes a fixed seat 21 extending along the X-axis direction, a mounting seat 22 extending along the Y-axis direction (front-back direction in the present embodiment), an X-axis driver 24, a Y-axis driver 25 and a column 23, wherein the fixed seat 21 is directly arranged on the rear side of the processing section 11 of the workbench 10 and is parallel to the processing section 11; the mounting seat 22 can be slidably assembled on the fixed seat 21 along the X-axis direction, and the X-axis driver 24 drives and connects the mounting seat 22 to drive the mounting seat 22 to move along the X-axis direction on the fixed seat 21; the column 23 can be slidably assembled on the mounting seat 22 along the Y-axis direction, and the Y-axis driver 25 drives and connects the column 23 to drive the column 23 to move along the Y-axis direction on the mounting seat 22; the processing spindle 30 can be raised and lowered and assembled on the column 23; so that the processing spindle 30 moves in the three-axis directions of XYZ, with the Z axis being the height direction. Specifically, the moving range of the mounting seat 22 on the fixing seat 21 is the range of the processing section 11. More specifically, the X-axis driver 24 and the Y-axis driver 25 are both screw drivers, which are driven by screw drivers, have simple structural design, stable and accurate driving, and do not require complex driving structures.

[0033] Of course, in other embodiments, the structure of the movable bracket 20 is not limited thereto, and may also be a mechanical arm in the prior art.

[0034] Specifically, in this embodiment, the lifting and lowering drive of the machining spindle 30 on the column 23 is driven by a motor, such as a motor and a screw rod to drive the machining spindle 30 to rise and fall. Furthermore, two sets of cylinders for balancing are provided on the column 23, and the two sets of cylinders drive and connect the machining spindle 30 to assist the lifting and lowering of the machining spindle 30 and achieve the effect of smoothly lifting and lowering the machining spindle 30. Of course, in other embodiments, the driver that drives the lifting and lowering of the machining spindle 30 on the column 23 can also adopt a device such as a hydraulic cylinder in the prior art.

[0035] Specifically, it also includes a tool magazine bracket 71 and a tool magazine 72. The tool magazine bracket 71 is a floor-standing structure and is fixed on one side of the movable bracket 20. The tool magazine 72 is installed on the tool magazine bracket 71 to correspond to the processing spindle 30. In this way, the load of the movable bracket 20 can be reduced and the stability is better.

[0036] Furthermore, the workbench 10 needs to maintain a certain height. Therefore, in this embodiment, it also includes a support base 40, which has an inclined upper surface 41 and a plurality of support platforms 42 arranged on the inclined upper surface 41. Specifically, the inclined upper surface 41 is inclined toward one side of the Y-axis direction (toward the front side in this embodiment); the plurality of support platforms 42 are arranged at intervals along the X-axis direction; the workbench 10 is fixedly mounted on the plurality of support platforms 42; in this way, the debris generated by processing is flushed from the workbench 10 into the inclined upper surface 41 of the support base 40, and then discharged from the front side of the support base 40 through the inclined upper surface 41.

[0037] Still more preferably, it also includes a debris collection device 50, which is arranged on one side of the support base 40 and corresponds to the lower side of the inclined upper surface 41 (referring to the lower side, which is the front side in this embodiment); the output end of the debris collection device 50 extends to the outside of the casing 100, so that the debris can be discharged out of the casing 100 in time.

[0038] Furthermore, the support platform 42 is provided with a hoisting hole, so that the housing 100 can be installed or removed by hoisting.

[0039] In order not to hinder the operation of the processing spindle 30, in this embodiment, the housing 100 has a clearance window 109 for the processing spindle 30 to move along the X-axis direction. The side frame of the clearance window 109 is connected to the movable bracket 20 through a retractable shield 60. When the movable bracket 20 moves, the shield 60 is retracted accordingly to ensure that the clearance window 109 is effectively covered to prevent debris from splashing out. Furthermore, the shield 60 is inclined toward the side of the workbench 10, and the debris splashed on the shield 60 can flow downward through the inclined side, which is convenient for collection.

[0040] Specifically, the shield 60 is obtained by telescopically sleeved a plurality of shield pieces, and two adjacent shield pieces are provided with brushes extending into a fitting gap therebetween to prevent debris from entering the fitting gap and causing abnormal extension and retraction of the shield 60 .

[0041] A baffle 231 is designed at the top of the column 23 to prevent the splashing of debris; and structures such as a motor, a cylinder, and a drag chain are arranged behind the baffle 231.

[0042] The side door 103 can be slidably mounted on the support frame 1021 of the housing 100, and can be specifically slidably mounted on the support frame 1021 of the housing 100 forward and backward. The side door 103 and the support frame 1021 of the housing 100 are connected via a telescopic driver 80 (specifically a telescopic cylinder). When it is necessary to open, the telescopic driver 80 drives the side door 103 to move backward, such as Figure 5As shown, an opening 108 for hoisting is opened in the housing 100. After the hoisting is completed, the side door 103 is driven forward by the telescopic drive 80 to be closed.

[0043] Specifically, the housing 100 includes a first part 101 and a second part 102, the first part 101 corresponds to the processing section 11, the movable bracket 20 and the processing spindle 30 of the workbench 10; the second part 102 corresponds to the extension section 12 of the workbench 10; the height of the second part 102 is lower than that of the first part 101; the side door 103 is composed of a first side panel 104 of the first part 101 facing the second part 102, a top panel 105 constituting the second part 102 and a second side panel 106 (i.e., the side panel in the X-axis direction) constituting the second part 102; in this way, when the side door 103 is opened, the hoisting is completely unobstructed and can be directly loaded along the X-axis direction.

[0044] A sliding door 107 that slides sideways is disposed on the front side of the first part 101 for normal entry and exit of personnel and small workpieces.

[0045] Of course, in other embodiments, the side door 103 may simply constitute the second side plate 106 of the second portion 102 , but the opening 108 is limited, which may hinder the lifting of large workpieces.

[0046] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A CNC machine tool suitable for small-scale processing of large workpieces, comprising a housing and a workbench, a movable bracket and a processing spindle arranged in the housing; characterized in that: The workbench extends along the X-axis direction and forms a processing section and an extension section. The movable bracket is arranged on one side of the processing section, and the processing spindle is assembled on the movable bracket in a liftable manner. The housing is provided with a side door corresponding to the extension section of the workbench on one side of the X-axis direction.

2. The CNC machine tool suitable for small-scale processing of large workpieces according to claim 1, characterized in that: The movable bracket includes a fixed seat extending along the X-axis direction, a mounting seat extending along the Y-axis direction, an X-axis driver, a Y-axis driver and a column. The mounting seat can be slidably assembled on the fixed seat along the X-axis direction, and the X-axis driver is driven to connect the mounting seat; the column can be slidably assembled on the mounting seat along the Y-axis direction, and the Y-axis driver is driven to connect the column, and the machining spindle can be raised and lowered and assembled on the column.

3. The CNC machine tool suitable for small-scale processing of large workpieces according to claim 2 is characterized in that: The X-axis driver and the Y-axis driver are both screw drivers.

4. The CNC machine tool suitable for small-scale processing of large workpieces according to claim 1, characterized in that: It also includes a support base, which has an inclined upper surface and a plurality of support platforms arranged on the inclined upper surface, and the workbench is fixedly installed on the plurality of support platforms; the inclined upper surface is inclined toward one side of the Y-axis direction; the plurality of support platforms are arranged at intervals along the X-axis direction; and lifting holes are arranged on the support platforms.

5. The CNC machine tool suitable for small-scale processing of large workpieces according to claim 4, characterized in that: It also includes a debris collection device, which is arranged on one side of the support base and corresponds to the lower side of the inclined upper surface; the output end of the debris collection device extends outside the casing.

6. The CNC machine tool suitable for small-scale processing of large workpieces according to claim 1, characterized in that: The housing has a clearance window for the machining spindle to move along the X-axis direction. The side frame of the clearance window is connected to the movable bracket through a retractable shield, and the shield is inclined toward the side of the workbench.

7. The CNC machine tool suitable for small-scale processing of large workpieces according to claim 6, characterized in that: The shield is obtained by telescopically sleeve-connecting a plurality of shield pieces, and two adjacent shield pieces are provided with brushes extending into a matching gap between the two pieces.

8. The CNC machine tool suitable for small-scale processing of large workpieces according to claim 1, characterized in that: The side door can be slidably mounted on a supporting frame of the casing, and the side door and the supporting frame of the casing are connected via a telescopic driver.

9. The CNC machine tool suitable for small-scale processing of large workpieces according to claim 1 or 8, characterized in that: The casing includes a first part and a second part, the first part corresponds to the processing section, movable bracket and processing spindle of the workbench; the second part corresponds to the extension section of the workbench; the height of the second part is lower than the first part; the side door is composed of a first side panel of the first part facing the second part, a top panel constituting the second part and a second side panel constituting the second part; a sliding door for lateral sliding is arranged on the front side of the first part.

10. The CNC machine tool suitable for small-scale processing of large workpieces according to claim 1, characterized in that: It also includes a tool magazine support and a tool magazine. The tool magazine support is a floor-standing structure and is fixed on one side of the movable support. The tool magazine is installed on the tool magazine support to correspond to the machining spindle.

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