WO2021253657A1

WO2021253657A1 - Numerical control spiral bevel gear milling machine

Info

Publication number: WO2021253657A1
Application number: PCT/CN2020/115929
Authority: WO
Inventors: 张春晖; 尚吉顺; 蒋凯; 史伟; 李长顺; 杨颖�; 邹文毅
Original assignee: 湖南中大创远数控装备有限公司
Priority date: 2020-06-19
Filing date: 2020-09-17
Publication date: 2021-12-23
Also published as: CN111805008A

Abstract

A numerical control spiral bevel gear milling machine, comprising a machine tool body (100), a workpiece box body (500), a sliding table (200), a rotation shaft box (300) and a cutter box body (400), wherein the workpiece box body (500) is movably mounted on the machine tool body (100) in the horizontal X-axis direction; the sliding table (200) is movably mounted on the machine tool body (100) in the horizontal Y-axis direction; the rotation shaft box (300) is movably mounted in the sliding table (200) in the vertical Z-axis direction; the cutter box body (400) is rotatably mounted at one end of the rotation shaft box (300) close to the workpiece box body (500); the workpiece box body (500) is provided with a workpiece spindle A; and the cutter box body (400) is provided with a cutter spindle C. The gear milling machine ensures that the whole center of gravity of the sliding table, of the rotation shaft box and of the cutter box body is within the range of the sliding table, such that the sliding table, the rotation shaft box and the cutter box body have a high stability and are convenient to adjust; and a workpiece is located at the upper end of the workpiece spindle A, thus facilitating dismounting and mounting of the workpiece.

Description

CNC spiral bevel gear milling machine

Technical field

The invention relates to a numerical control processing equipment, in particular to a numerical control spiral bevel gear milling machine.

Background technique

CNC gear milling machine is an automatic machining center used for gear processing. In the traditional structure, in order to realize the movement of the tool in the vertical direction, a sufficiently high column is provided on the bed of the CNC gear milling machine to provide a sufficient movement stroke. The current column is generally made of a piece of metal, and the tool box is installed on the side wall of the column, resulting in a high center of gravity of the column, poor structural stability and inconvenient adjustment, especially in large-sized machine tools. At the same time, in the traditional structure, the workpiece is usually fixed on the side of the workpiece box. When the size of the workpiece is large, it is difficult to disassemble and assemble.

Summary of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a CNC spiral bevel gear milling machine, including a bed, a workpiece box, a sliding table, a rotating shaft box, and a tool box, wherein the workpiece box is movably installed in the horizontal X-axis direction On the bed, the sliding table is mounted on the bed so as to move along the horizontal Y axis, the rotating shaft box is mounted on the sliding table so as to move along the vertical Z axis, and the tool box is mounted for rotation An end of the rotating shaft box close to the workpiece box body, and the workpiece box body is provided with a workpiece spindle A axis, and the tool box body is provided with a tool spindle C axis.

According to the embodiments of the present invention, there are at least the following technical effects:

In the present invention, by installing the rotating shaft box in the sliding table and installing the tool box body on the end of the rotating shaft box close to the workpiece box, it can not only realize the work cooperation between the workpiece and the tool, but also can effectively connect the sliding table, the rotating shaft box, and the tool. The overall center of gravity of the box body is ensured within the range of the sliding table, which is more stable and easy to adjust than the traditional structure arranged on the side wall. In addition, the workpiece spindle A axis can be arranged along the Z axis direction so that the workpiece is located at the upper end of the workpiece spindle A axis, which is convenient for disassembly and assembly of the workpiece, and has strong practicability.

According to some embodiments of the present invention, the rotating shaft box can rotate around the B axis, the workpiece spindle A axis is parallel to the Z axis, the B axis is parallel to the X axis, and the tool spindle C axis is perpendicular to the B axis.

According to some embodiments of the present invention, an installation cavity extending in the Y-axis direction is opened at a middle position of the sliding table along the Z-axis direction, and the rotating shaft box is located in the installation cavity.

According to some embodiments of the present invention, a Z-axis guide rail is provided on the outer side wall of the sliding table, and the rotating shaft box is installed on the Z-axis guide rail.

According to some embodiments of the present invention, an end of the rotating shaft box close to the workpiece box extends outside the sliding table.

According to some embodiments of the present invention, the bed is provided with a column on one side of the workpiece box, and the sliding table is installed on the column.

According to some embodiments of the present invention, the column is provided with a cavity extending in the Y-axis direction, the bottom of the sliding table is located in the cavity, and the side wall of the sliding table has a cavity mounted on the The convex structure on the end surface of the side wall of the cavity.

According to some embodiments of the present invention, the workpiece box, the sliding table and the rotating shaft box are respectively connected with a driving mechanism for controlling movement.

According to some embodiments of the present invention, the driving mechanism is one of a linear motor, a torque motor, a motor screw drive mechanism, an oil cylinder drive mechanism, a gear drive mechanism, a crank connecting rod drive mechanism, and a worm gear drive mechanism.

According to some embodiments of the present invention, it further includes a chip conveyor, the bed is provided with a chip removal structure on the peripheral side of the workpiece box, and the chip conveyor is provided corresponding to the chip removal structure.

The additional aspects and advantages of the present invention will be partially given in the following description, and some will become obvious from the following description, or be understood through the practice of the present invention.

Description of the drawings

The above and/or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

Figure 1 is a schematic diagram of the structure of the first embodiment;

Figure 2 is a schematic structural diagram of a second embodiment;

Figure 3 is a schematic diagram of the first traditional structure;

Figure 4 is a schematic diagram of the second traditional structure;

Figure 5 is a schematic diagram of the third traditional structure.

detailed description

The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary, and are only used to explain the present invention, but should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Axial", "Radial", "Circumferential" The orientation or positional relationship of the other indications is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the pointed device or element must have a specific orientation or a specific orientation. The azimuth structure and operation cannot be understood as a limitation of the present invention. In addition, the features defined with "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be noted that the terms "installed", "connected", and "connected" should be understood in a broad sense unless otherwise clearly specified and limited. For example, they can be fixed or detachable. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present invention can be understood in specific situations.

1 to 2, the present invention is a CNC spiral bevel gear milling machine, including a bed 100, a workpiece box 500, a sliding table 200, a rotating shaft box 300 and a tool box 400, wherein the workpiece box 500 is along Mounted on the bed 100 movably in the horizontal X-axis direction, the sliding table 200 is mounted on the bed 100 movably in the horizontal Y-axis direction, the rotating shaft box 300 is mounted in the sliding table 200 movably in the vertical Z-axis direction, and the tool box The body 400 is rotatably installed at one end of the rotating shaft box 300 close to the workpiece box 500, and the workpiece box 500 is provided with a workpiece spindle A axis, and the tool box 400 is provided with a tool spindle C axis.

The present invention adopts the above-mentioned structure, by installing the rotating shaft box 300 in the sliding table 200 and installing the tool box 400 on the end of the rotating shaft box 300 close to the workpiece box 500, it is possible to realize the work cooperation between the workpiece and the tool, and also The overall center of gravity of the sliding table 200, the rotating shaft box 300, and the tool box 400 is effectively ensured within the range of the sliding table 200, which is more stable and easy to adjust than the traditional structure arranged on the side wall. In addition, the workpiece spindle A axis can be arranged along the Z axis direction so that the workpiece is located at the upper end of the workpiece spindle A axis, which is convenient for disassembly and assembly of the workpiece, and has strong practicability.

In some embodiments, the rotating shaft box 300 rotates around the B axis, the workpiece spindle A axis is parallel to the Z axis, the B axis is parallel to the X axis, and the tool spindle C axis is perpendicular to the B axis.

Because in the actual working process, the setting orientation of the CNC spiral bevel gear milling machine is usually shown in Figure 1, where the X axis and Y axis are horizontal axes, and the Z axis is vertical axis, so the three rotation axes set in this way can be realized The workpiece is clamped on the upper end of the workpiece box 500. In this way, it is convenient to disassemble and assemble when used for processing large-sized workpieces. And the rotation axis set in this way, the workpiece has only vertical force on the workpiece box 500 and the workpiece spindle A axis. Compared with the structure of the traditional workpiece spindle A axis horizontally arranged, the workpiece rotates more smoothly. The use of the workpiece spindle A axis Longer life, suitable for processing large-size workpieces.

In some embodiments, a mounting cavity 203 extending in the Y axis direction is opened at the middle position of the sliding table 200 along the Z axis direction, and the rotating shaft box 300 is located in the mounting cavity 203.

As shown in FIG. 1, in one embodiment, the mounting cavity 203 penetrates the sliding table 200 along the Y-axis direction. Two sets of Z-axis guide rails 301 are provided on the side wall of the sliding table 200 at one end close to the workpiece box 500, and the rotating shaft box 300 The two sides of the Z-axis guide rail 301 extend on the Z-axis guide rail 301 and are slidably connected to the Z-axis guide rail 301, and the main structure of the shaft box 300 is located in the installation cavity 203. The height of the installation cavity 203 is greater than or equal to the adjustment stroke of the shaft box 300. A first driving mechanism 302 is installed at the upper end of the sliding table 200, and the first driving mechanism 302 is drivingly connected to the rotating shaft box 300 to control the rotating shaft box 300 to move on the Z-axis guide rail 301.

Since the Z-axis guide rail 301 is located on the outer side of the sliding table 200, it is convenient to align during installation. At the same time, the installation cavity 203 penetrates the sliding table 200. During installation, the shaft box 300 can be supported from the other end, so it is convenient for the shaft box 300 to be installed. Install. At the same time, weight is reduced on the premise of satisfying structural performance.

Of course, in the actual production process, the installation cavity 203 may not penetrate the sliding table 200, and it can be flexibly set as required.

In some embodiments, an end of the rotating shaft box 300 close to the workpiece box 500 extends outside the sliding table 200. In this way, it is not only convenient to install the tool box 400, but also convenient to ensure the cooperation of the tool and the workpiece.

As shown in FIG. 1, in one embodiment, two sets of vertical and parallel cantilever structures 303 are provided at one end of the rotating shaft box 300 close to the workpiece box 500, and the tool box 400 is rotatably installed between the two sets of cantilever structures 303. A rotary drive mechanism 401 is installed on the outside of a group of cantilever structures 303, and the rotary drive mechanism 401 is drivingly connected to the tool box 400 to control the tool box 400 to rotate.

The arrangement of this installation structure can effectively ensure the stability and strength of the tool box 400 during the rotation.

In order to reduce the height of the sliding table 200 to improve the stability of the equipment and the force requirements for the corresponding drive, in some embodiments, the bed 100 is provided with a column 101 on one side of the workpiece box 500, and the sliding table 200 is installed On the pillar 101.

During the working process, the tool needs to be adjusted up and down, and the workpiece box 500 itself has a certain height. Therefore, if the workpiece box 500 and the sliding table 200 are installed on the same horizontal plane, in order to meet the needs of the up and down adjustment of the tool, it is bound to increase the sliding table. 200 height. However, the height of the sliding table 200 can be reduced by the arrangement of the column 101, and the stability of the structure can be effectively improved.

The column 101 can be integrally formed with the bed 100, or it can be installed on the bed 100 by welding, bolt connection, etc., which can be flexibly selected in the actual production process.

Further, the column 101 is provided with a cavity 103 extending along the Y-axis direction, the bottom of the sliding table 200 is located in the cavity 103, and the side wall of the sliding table 200 has an end surface mounted on the side wall of the cavity 103 Protruding structure.

A Y-axis guide rail 201 is provided at the bottom of the cavity 103 and the upper ends of the two side walls of the cavity 103, and the sliding table 200 is slidably mounted on the Y-axis guide rail 201. In addition, a second driving mechanism 202 is provided at the bottom of the cavity 103, and the second driving mechanism 202 is drivingly connected to the sliding table 200 to control the sliding table 200 to move on the Y-axis guide rail 201.

The sliding table 200 installed with the above-mentioned structure can effectively reduce the center of gravity of the sliding table 200 through the arrangement of the cavity 103, and improve the installation stability of the sliding table 200, and improve the stability of the sliding table 200 along the Y axis.

Further, a number of X-axis guide rails 501 are provided on the bed 100, and the workpiece box 500 is slidably mounted on the X-axis guide rail 501. In addition, a third driving mechanism 502 is provided on the bed 100, and the third driving mechanism 502 is drivingly connected to the workpiece box 500 to control the movement of the workpiece box 500 on the X-axis guide rail 501.

The above-mentioned first drive mechanism 302, second drive mechanism 202, and third drive mechanism 502 can be configured as a linear motor, a torque motor, a motor screw drive mechanism, an oil cylinder drive mechanism, a gear drive mechanism, a crank connecting rod drive mechanism, and a worm gear. One of the transmission mechanisms, such as the transmission mechanism, or other structures known in the market.

In addition, the numerical control spiral bevel gear milling machine further includes a chip conveyor 600, the bed 100 is provided with a chip removal structure on the peripheral side of the workpiece box 500, and the chip conveyor 600 is provided corresponding to the chip removal structure.

As shown in FIG. 1, in one embodiment, the bed 100 is provided with a mounting position 102 that is connected up and down, and the workpiece box 500 is erected above or in the mounting position 102. A chip removal structure is formed through the gap between the workpiece box 500 and the installation position 102. The chip conveyor 600 is located below the installation position 102. In this way, when waste chips are generated during the machining process, they can be discharged into the chip conveyor 600 through the installation position 102 in time, and discharged through the chip conveyor 600.

Of course, in the actual production process, other structural forms of chip removal structure can also be provided, and it only needs to be able to guide and discharge the waste generated during the processing into the chip conveyor 600.

3 to 5, in the traditional CNC spiral bevel gear milling machine, the workpiece box 500 is generally a cradle structure or a swing table structure (that is, the workpiece box 500 swings around an axis that is different from the workpiece). The force is limited, so it is generally only suitable for installing small products (that is, smaller gears) for processing. At the same time, since the traditional tool box 400 has a relatively large protruding distance and a large force arm relative to the bed 100, it is also difficult to install a tool suitable for machining large-scale gears. In addition, the traditional workpiece box 500 and the tool box 400 are arranged side by side or up and down, which makes it difficult to install large-sized gears. Therefore, the traditional CNC spiral bevel gear grinding machine is only suitable for small product processing.

In the numerical control spiral bevel gear grinding machine of the present invention, the workpiece box 500 is arranged vertically upwards, and only the X-axis translation is performed. The tool box 400 can be moved to the top or side of the workpiece, which is used for large products. During processing, the gear can be directly hoisted to the workpiece box 500 by the hoisting equipment, without generating a large force arm, and the large-size gear can be effectively clamped and processed, which makes up for the shortcomings of the traditional structure.

In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples", or "some examples" etc. means to incorporate the implementation The specific features, structures, materials, or characteristics described by the examples or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above-mentioned terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and purpose of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

A numerically controlled spiral bevel gear milling machine, which is characterized in that it comprises a bed, a workpiece box, a sliding table, a rotating shaft box, and a tool box, wherein the workpiece box is movably installed in the horizontal X-axis direction. On the bed, the sliding table is mounted on the bed so as to move along the horizontal Y axis, the rotating shaft box is mounted on the sliding table so as to move along the vertical Z axis, and the tool box is rotatably mounted on the bed. The rotating shaft box is close to one end of the workpiece box body, and the workpiece box body is provided with a workpiece spindle A axis, and the tool box body is provided with a tool spindle C axis.
The numerical control spiral bevel gear milling machine according to claim 1, wherein the rotating shaft box can rotate around the B axis, the workpiece spindle A axis is parallel to the Z axis, and the B axis is parallel to the X axis. The C-axis of the tool spindle is perpendicular to the B-axis.
The numerical control spiral bevel gear milling machine according to claim 1, wherein the middle position of the sliding table along the Z axis is provided with a mounting cavity extending along the Y axis, and the rotating shaft box is located in the In the installation cavity.
The numerical control spiral bevel gear milling machine according to claim 3, wherein a Z-axis guide rail is provided on the outer side wall of the sliding table, and the rotating shaft box is installed on the Z-axis guide rail.
The numerical control spiral bevel gear milling machine according to claim 1, wherein an end of the rotating shaft box close to the workpiece box extends outside the sliding table.
The numerical control spiral bevel gear milling machine according to claim 1, wherein the bed is provided with a column on one side of the workpiece box, and the sliding table is installed on the column.
The numerical control spiral bevel gear milling machine according to claim 6, characterized in that: the column is provided with a cavity extending along the Y-axis direction, the bottom of the sliding table is located in the cavity, and The side wall of the sliding table has a convex structure mounted on the end surface of the side wall of the cavity.
The numerical control spiral bevel gear milling machine according to claim 1, characterized in that: the workpiece box, the sliding table and the rotating shaft box are respectively connected with a driving mechanism for controlling movement.
The numerical control spiral bevel gear milling machine according to claim 8, wherein the driving mechanism is a linear motor, a torque motor, a motor screw drive mechanism, a cylinder drive mechanism, a gear drive mechanism, and a crank connecting rod drive. A kind of mechanism, worm gear and worm drive mechanism.
The numerical control spiral bevel gear milling machine according to claim 1, characterized in that it further comprises a chip conveyor, the bed is provided with a chip removal structure on the peripheral side of the workpiece box, and the chip removal The device is arranged corresponding to the chip removal structure.