Double-turntable double-spindle horizontal machine tool and processing method

Abstract

The present invention relates to a double-turntable double-spindle horizontal machine tool and a processing method. The machine tool may include two turntable assemblies and two spindle modules that share a bed and a numerical control system. The two turntable assemblies are fixed on the bed side by side along the X-axis direction and can rotate independently around the X-axis direction. The two spindle modules are installed on the bed side by side along the X-axis direction and can work independently. The present invention combines the advantages of the two existing technical routes and avoids the disadvantages of the two technical routes, that is, it realizes one-time clamping processing and avoids the loading and unloading process from occupying processing time. At the same time, the two turntables can rotate independently, which can turn a double-spindle horizontal machine tool into two independently working single-spindle machine tools. Compared with two independent single-spindle horizontal machine tools, the cost is greatly reduced.

Description

Technical Field

[0001] The invention belongs to the field of horizontal machine tools, and in particular relates to a double-turntable double-spindle horizontal machine tool and a processing method. Background Art

[0002] Traditional machine tools have a single usage scenario, poor system flexibility, and can only adapt to a small number of workpiece types. In addition, large machine tools are expensive. Therefore, there is a higher demand for large machine tools to be more flexible and efficient, so that they can adapt to more processing scenarios, reduce equipment investment, and obtain a higher return on equipment investment.

[0003] There are also dual-spindle machine tools on the current market. The advantage of this dual-spindle machine tool is that two sets of spindles are used on the same bed, sharing the bed and CNC system, maximizing the value of the bed and controller, and doubling the processing capacity. For dual-spindle horizontal machine tools, taking the processing of hexahedrons as an example, there are two common technical routes:

[0004] Technical route 1: single turntable flip with one clamping;

[0005] Technical route two: secondary clamping and single turntable flipping.

[0006] The disadvantage of technical route one is that the time for loading and unloading the workpiece takes up processing time, reducing the equipment operating rate, which in turn affects the equipment's return on investment.

[0007] The disadvantage of technical route 2 is that it requires secondary clamping and turning over. If the workpiece is large, a special mechanism is required to assist. Summary of the invention

[0008] The purpose of the present invention is to provide a double-turntable double-spindle horizontal machine tool and a processing method to solve the above problems. To this end, the technical solution adopted by the present invention is as follows:

[0009] According to one aspect of the present invention, a dual-turntable dual-spindle horizontal machine tool is provided, which may include two turntable assemblies and two spindle modules that share a bed and a numerical control system, the two turntable assemblies being fixed to the bed side by side along the X-axis direction and being able to rotate independently around the X-axis direction, and the two spindle modules being installed on the bed side by side along the X-axis direction and being able to work independently.

[0010] In a preferred embodiment, the spindle module is a five-axis spindle module.

[0011] In a preferred embodiment, the bed is provided with a slide rail extending along the X-axis direction, and the two spindle modules are slidably engaged on the slide rail.

[0012] In a preferred embodiment, the number of the slide rails is 2.

[0013] In a preferred embodiment, three columns are arranged side by side on the bed along the X-axis direction, and the two turntable assemblies are installed on the three columns.

[0014] In a preferred embodiment, the turntable assembly includes a driving shaft, a driven shaft and a zero-point quick-change device, the driving shaft and the driven shaft are rotatably mounted on the two columns respectively, and the zero-point quick-change device is fixedly connected to the driving shaft and the driven shaft.

[0015] In a preferred embodiment, the turntable assembly also includes two discs and two support rods, the two discs are respectively fixed on the active rotating shaft and the driven rotating shaft and are opposite to each other, the two support rods are fixed on the two discs, and the zero-point quick-change device is fixed on the support rods.

[0016] In a preferred embodiment, the zero-point quick-change device is a pneumatic zero-point quick-change device.

[0017] In a preferred embodiment, the columns are rectangular columns, and the distance between two adjacent columns is the same.

[0018] According to another aspect of the present invention, there is also provided a processing method, which may include the following steps:

[0019] Providing a double-turret double-spindle horizontal machine tool as described above;

[0020] Select the corresponding processing mode according to the specifications of the workpiece to be processed;

[0021] The workpiece to be processed is fixedly placed on the turntable assembly according to the selected processing mode;

[0022] The workpiece to be processed is automatically processed.

[0023] In a preferred embodiment, the processing mode includes the following three modes:

[0024] Mode 1: The two spindle modules simultaneously process a workpiece fixedly placed on one of the turntable components;

[0025] Mode 2: the two spindle modules respectively process two workpieces respectively fixed on the two turntable assemblies; and

[0026] Mode three: the two spindle modules simultaneously process a workpiece fixedly placed on the two turntable assemblies.

[0027] The present invention combines the advantages of the two existing technical routes and avoids the disadvantages of the two technical routes, that is, it realizes one-time clamping processing and avoids the loading and unloading process occupying processing time. At the same time, the two turntables can rotate independently, which can turn a double-spindle horizontal machine tool into two independently working single-spindle machine tools. Compared with two independent single-spindle horizontal machine tools, the cost is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural stereoscopic schematic diagram of a double-turntable double-spindle horizontal machine tool according to an embodiment of the present invention;

[0029] Figure 2 yes Figure 1 The top view of the double-turret double-spindle horizontal machine tool is shown.

[0030] Figure 3 The present invention is a flowchart of a processing method of a double-turret double-spindle horizontal machine tool according to an embodiment of the present invention. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings so that the purpose, features and advantages of the present invention can be more clearly understood. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solution of the present invention.

[0032] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the relevant art will recognize that the embodiments may be practiced without one or more of these specific details. In other cases, well-known devices, structures, and techniques associated with the present application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0033] Unless the context requires otherwise, throughout the specification and claims, the word "comprise" and variations such as "include" and "have" should be construed in an open, inclusive sense, ie, should be interpreted as "including, but not limited to."

[0034] References throughout the specification to "one embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of "in one embodiment" or "in an embodiment" in various places throughout the specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0035] As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and / or" unless the context clearly dictates otherwise.

[0036] In the following description, in order to clearly show the structure and working mode of the present invention, many directional words will be used for description, but the words "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", "down", etc. should be understood as convenient terms and should not be understood as restrictive terms.

[0037] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0038] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] like Figure 1 and 2 As shown, a double-turret double-spindle horizontal machine tool may include two turret assemblies 2 and two spindle modules 3 that share a bed 1 and a numerical control system (not shown). Figure 1 In the figure, the bed 1 is not shown in its entirety, only the part where the turntable assembly 2 and the two spindle modules 3 are installed is shown. For the convenience of description, the left and right direction is referred to as the X-axis direction, the up and down direction is referred to as the Y-axis direction, and the front and back direction is referred to as the Z-axis direction. The two turntable assemblies 2 are fixed on the bed 1 side by side along the X-axis direction and can rotate independently around the X-axis direction. The two spindle modules 3 are installed on the bed 1 side by side along the X-axis direction and can work independently. Since the two turntables can rotate independently, it is equivalent to turning a double-turntable double-spindle horizontal machine tool into two independent single-spindle machine tools. Compared with two independent single-spindle horizontal machine tools, the cost is greatly reduced. At the same time, through the cooperation of the two turntable assemblies 2 and the two spindle modules 3, a variety of processing modes can be realized, so that the machine tool has greater processing capabilities:

[0040] Mode 1: Dual spindles can process one side at the same time, completing uninterrupted one-time clamping processing;

[0041] Mode 2: Two spindles are responsible for one workbench each, turning a dual-spindle machine tool into two single-spindle machine tools;

[0042] Mode 3: The two worktables move synchronously to double the worktable area and process larger workpieces.

[0043] Preferably, the spindle module 3 is a five-axis spindle module, namely, the X-axis, Y-axis, Z-axis, B-axis and C-axis. Therefore, the spindle module 3 plus the rotation of the turntable assembly 2 around the X-axis direction (A-axis) is equivalent to the present double-turntable double-spindle horizontal machine tool being a six-axis machine tool, which can realize six degrees of freedom and can fully meet the processing of most workpieces.

[0044] In this embodiment, two spindle modules 3 share one X-axis. Specifically, the bed 1 is provided with a slide rail 11 extending along the X-axis direction, and the two spindle modules 3 (specifically, the Y-axis column) are slidably engaged on the slide rail 11. In order to improve the supporting capacity and stability, preferably, the number of the slide rails 11 is 2.

[0045] Continue to refer to Figure 1 and 2 , three columns 12 are arranged side by side on the bed 1 along the X-axis direction. Preferably, the distance between two adjacent columns 12 is the same, that is, the three columns 12 are evenly spaced. The columns 12 can be fixed to the main body of the bed 1 by welding or bolting. In the illustrated embodiment, the columns 12 are rectangular columns for easy installation and fixing. The size of the columns 12 needs to be designed to meet the load-bearing requirements of the largest workpiece to be processed.

[0046] Two turntable assemblies 2 are mounted on three columns 12. Specifically, the turntable assembly 2 may include a driving shaft 21, a driven shaft (not shown) and a zero-point quick-change device 22. The two driving shafts 21 are respectively mounted on the two columns 12 on both sides through corresponding bearings, and the two driven shafts are respectively mounted on the middle column 12 through corresponding bearings and extend out of the middle column 12 in opposite directions. The zero-point quick-change device 22 is fixedly connected to the driving shaft 21 and the driven shaft. In the illustrated embodiment, the turntable assembly 2 also includes two discs 23 and two support rods 24, the two discs 23 are respectively fixed (for example, by keyways or interference fits) on the driving shaft 21 and the driven shaft and are opposite to each other, and the two support rods 24 are fixed (for example, by screws or welding) on ​​the two discs 23. The zero-point quick-change device 22 is fixed (for example, by screws) on the support rods 24. In this embodiment, three zero-point quick-change devices 22 are installed on each support rod 24. It should be understood that the number of zero-point quick-change devices 22 is not limited thereto. The turntable table (not shown) of the turntable assembly 2 can be quickly inserted into and disconnected from the zero-point quick-change device 22. The workpiece to be processed is clamped on the turntable table and can be rotated (turned) around the X-axis, thereby realizing processing of different surfaces of the workpiece.

[0047] Preferably, the zero-point quick-change device is a pneumatic zero-point quick-change device available on the market. Specifically, a plurality of pins are fixed on the turntable surface, and the pins are inserted into the zero-point quick-change device 22, and the cylinder is actuated to hold and lock the pins. When it is to be removed, the turntable surface can be directly lifted away by simply releasing the cylinder, which is very quick.

[0048] like Figure 3 As shown, the present invention also provides a processing method, which may include the following steps:

[0049] S1. Provide a double-turntable double-spindle horizontal machine tool as described above;

[0050] S2. Select a corresponding processing mode according to the specifications of the workpiece to be processed, wherein the processing mode includes the following three modes:

[0051] Mode 1: Two spindle modules simultaneously process a workpiece fixed on a turntable assembly, which can realize alternate loading and unloading. The loading and unloading time does not occupy the machine tool processing time, thus improving the utilization efficiency of the machine tool;

[0052] Mode 2: Two spindle modules process two workpieces respectively fixed on two turntable assemblies, thus turning a dual-spindle machine tool into two single-spindle machine tools; and

[0053] Mode 3: Two spindle modules simultaneously process a workpiece fixed on two turntable assemblies. The two turntable assemblies move synchronously to double the worktable area and can process large-sized workpieces.

[0054] S3, according to the selected processing mode, the workpiece to be processed is fixedly placed on the turntable assembly;

[0055] S4, automatically processes the workpiece to be processed;

[0056] S5. Remove the processed workpiece.

[0057] In summary, the present invention combines the advantages of the two existing technical routes and avoids the disadvantages of the two technical routes, that is, it realizes one-time clamping processing and avoids the loading and unloading process occupying processing time. At the same time, the two turntables can rotate independently, which can turn a dual-spindle horizontal machine tool into two independently working single-spindle machine tools. Compared with two independent single-spindle horizontal machine tools, the cost is greatly reduced.

[0058] The preferred embodiments of the present invention have been described in detail above, but it should be understood that after reading the above teachings of the present invention, those skilled in the art may make various changes or modifications to the present invention. These equivalent forms also fall within the scope defined by the appended claims of this application.

Claims

1. A double-turntable double-spindle horizontal machine tool, characterized in that: The invention comprises two turntable assemblies and two spindle modules which share a bed and a numerical control system. The two turntable assemblies are fixed on the bed side by side along the X-axis direction and can rotate independently around the X-axis direction. The two spindle modules are installed on the bed side by side along the X-axis direction and can work independently. The bed is provided with a slide rail extending along the X-axis direction. The two spindle modules are slidably engaged on the slide rail. Three columns are arranged side by side on the bed along the X-axis direction. The turntable assembly comprises a driving shaft, a driven shaft and a zero-point quick-change device. The two driving shafts are respectively installed on the two columns on both sides through corresponding bearings. The two driven shafts are respectively installed on the middle column through corresponding bearings and extend out of the middle column in opposite directions. The zero-point quick-change device is fixedly connected to the driving shaft and the driven shaft. The spindle module and the turntable assembly cooperate to realize the following processing modes: Mode 1: The two spindle modules simultaneously process a workpiece fixedly placed on one of the turntable components; Mode 2: the two spindle modules respectively process two workpieces respectively fixed on the two turntable assemblies; and Mode three: the two spindle modules simultaneously process a workpiece fixedly placed on the two turntable assemblies.

2. The double-turntable double-spindle horizontal machine tool according to claim 1, characterized in that: The spindle module is a five-axis spindle module.

3. The double-turret double-spindle horizontal machine tool according to claim 1, characterized in that: The turntable assembly also includes two discs and two support rods. The two discs are respectively fixed on the active rotating shaft and the driven rotating shaft and are opposite to each other. The two support rods are fixed on the two discs, and the zero-point quick-change device is fixed on the support rods.

4. The double-turntable double-spindle horizontal machine tool according to claim 1, characterized in that: The zero point quick change device is a pneumatic zero point quick change device.

5. The double-turret double-spindle horizontal machine tool according to claim 1, characterized in that: The columns are rectangular columns, and the distance between two adjacent columns is the same.

6. A processing method, characterized in that: The following steps are involved: Providing a double-turntable double-spindle horizontal machine tool as described in any one of claims 1 to 5; Select the corresponding processing mode according to the specifications of the workpiece to be processed; The workpiece to be processed is fixedly placed on the turntable assembly according to the selected processing mode; The workpiece to be processed is automatically processed.

Images