Double-spindle machine tool

Abstract

The utility model discloses a double-spindle machine tool which comprises a control system, a machine tool body, a first spindle arranged on the machine tool body, a first displacement unit, a second displacement unit, a second tool rest unit, a first tool rest unit arranged on the first displacement unit and a second spindle arranged on the second displacement unit. A tool on the first tool rest unit is used for machining a workpiece clamped by the first main shaft, a tool on the second tool rest unit is used for machining a workpiece clamped by the second main shaft, a cutting tool is arranged on the first tool rest unit, a first chuck is arranged on the first main shaft, and a second chuck is arranged on the second main shaft. And the second main shaft is provided with a hydraulic chuck capable of automatically loosening and tightening. According to the utility model, workpieces are converted to different spindles to be clamped under the condition that the machine tool spindles do not stop rotating, so that the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tools, in particular to a double-spindle machine tool capable of converting workpieces without stopping the rotation of the spindle. Background Art

[0002] With the rapid development of modern manufacturing industry, the requirements for the processing efficiency and precision of machine tools are getting higher and higher. Among them, the double-spindle CNC horizontal lathe has high processing efficiency and precision, and can process two identical or different workpieces simultaneously, improving the production efficiency. However, in the actual processing process, after the workpiece is processed, it is necessary to stop the machine to perform the workpiece conversion process, and then restart the machine for processing. This way of stopping to convert workpieces will not only reduce the production efficiency, but also the frequent start and stop of the machine tool will have an adverse impact on the precision and service life of the machine tool.

[0003] Therefore, the prior art needs to be improved. Summary of the Utility Model

[0004] In view of the deficiencies of the above-mentioned prior art, the purpose of the present utility model is to provide a double-spindle machine tool, aiming to realize the function of converting the workpiece to different spindles without stopping the rotation of the spindle of the machine tool, and improving the production efficiency.

[0005] To achieve the above purpose, the present utility model adopts the following technical solutions:

[0006] The present utility model provides a double-spindle machine tool, which includes a control system, a bed, a first spindle arranged on the bed, a first displacement unit, a second displacement unit, a second tool rest unit, a first tool rest unit arranged on the first displacement unit, and a second spindle arranged on the second displacement unit. The tool on the first tool rest unit processes the workpiece clamped by the first spindle, and the tool on the second tool rest unit processes the workpiece clamped by the second spindle. A cutting tool is arranged on the first tool rest unit, a first chuck is arranged on the first spindle, and a hydraulically operated chuck with automatic clamping and loosening is arranged on the second spindle.

[0007] In some examples, the first displacement unit includes a first Z-axis moving module arranged on the bed, a first X-axis moving module arranged on the first Z-axis moving module, and a first Y-axis moving module arranged on the first tool rest unit. The first tool rest unit is arranged on the first X-axis moving module.

[0008] In some examples, the first X-axis moving module is arranged at an angle with the horizontal plane at the top of the bed and is in an inclined state.

[0009] In some examples, the first Z-direction movement module includes an inclined saddle, and the top of the inclined saddle has an inclined mounting surface for mounting the first X-direction movement module.

[0010] In some examples, the second displacement unit includes a second X-direction movement module disposed on the bed body, a second Z-direction movement module disposed on the second X-direction movement module, and the second main shaft is disposed on the second Z-direction movement module.

[0011] In some examples, a second Y-direction movement module is further disposed on the second tool rest unit.

[0012] In some examples, the first main shaft and the second tool rest unit are fixedly disposed on the left side of the bed body, and the first tool rest unit and the second main shaft are movably disposed on the right side of the bed body;

[0013] wherein the first main shaft is located at the left rear part of the bed body, the second tool rest unit is located at the left front part of the bed body, the first tool rest unit is located at the right rear part of the bed body, and the second main shaft is located at the right front part of the bed body.

[0014] It should be understood that within the scope of the present utility model, the above-mentioned technical features of the present utility model and the technical features specifically described hereinafter (such as the embodiments) can be combined with each other to form new or preferred technical solutions. Due to space limitations, they will not be repeated one by one here.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] In the double-spindle machine tool of the present utility model, after the workpiece on the first main shaft completes the processing of this process, the first main shaft does not stop rotating, and the second main shaft automatically clamps the workpiece from the first main shaft to perform the processing of the next process. In this way, during the conversion process of a workpiece from the current process to the next process on the double-spindle machine tool, neither the first main shaft nor the second main shaft needs to stop rotating, reducing the intermediate shutdown and startup steps and time, and improving the production and processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0018] Figure 1 It is a schematic diagram of the first perspective structure of the double-spindle machine tool of the present utility model.

[0019] Figure 2 This is a schematic structural diagram of the second perspective of the double-spindle machine tool of the present utility model.

[0020] Figure 3 This is a schematic flow diagram of the workpiece conversion without stopping the rotation of the double-spindle machine tool of the present utility model.

[0021] Figure 4 This is a schematic diagram of the alignment state of the second spindle and the first spindle of the double-spindle machine tool of the present utility model.

[0022] Figure 5 This is a schematic diagram of the hydraulic chuck and the first chuck having the same rotational speed and direction of rotation of the double-spindle machine tool of the present utility model.

[0023] Figure 6 This is a schematic diagram of the hydraulic chuck and the first chuck jointly clamping the workpiece of the double-spindle machine tool of the present utility model.

[0024] Figure 7 This is a schematic diagram of the top view of the double-spindle machine tool of the present utility model.

[0025] Figure 8 is Figure 1 a schematic exploded view of the structure.

[0026] Figure 9 This is a schematic diagram of the right side view of the double-spindle machine tool of the present utility model.

[0027] Figure 10 This is a schematic structural diagram of the second Z-axis movement module of the double-spindle machine tool of the present utility model.

[0028] Reference numerals:

[0029] 100 - Machine tool, 10 - Bed, 20 - First spindle, 21 - First chuck, 30 - First displacement unit, 31 - First Z-axis movement module, 311 - Tilted saddle, 32 - First X-axis movement module, 33 - First Y-axis movement module, 40 - Second displacement unit, 41 - Second X-axis movement module, 42 - Second Z-axis movement module, 421 - Motor, 422 - Coupling, 423 - Lead screw, 424 - Base, 425 - Slide seat, 50 - Second tool rest unit, 60 - First tool rest unit, 61 - Tool disc, 70 - Second spindle, 71 - Hydraulic chuck, 80 - Second Y-axis movement module, 200 - Workpiece. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement conditions, etc. between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0032] In the present invention, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or integrated; 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 communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0033] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features.

[0034] The present invention provides a double-spindle machine tool 100, as Figure 1 and Figure 2 shown. The double-spindle machine tool 100 includes a control system (not shown), a bed 10, a first spindle 20 arranged on the bed 10, a first displacement unit 30, a second displacement unit 40, a second tool rest unit 50, a first tool rest unit 60 arranged on the first displacement unit 30, and a second spindle 70 arranged on the second displacement unit 40. The tool on the first tool rest unit 60 processes the workpiece clamped by the first spindle 20, and the tool on the second tool rest unit 50 processes the workpiece clamped by the second spindle 70. A cutting tool is arranged on the first tool rest unit, a first chuck 21 is arranged on the first spindle, and a hydraulically actuated chuck 71 with automatic clamping and unclamping is arranged on the second spindle 70.

[0035] That is, the double-spindle machine tool 100 of the present utility model simultaneously has two spindles and two tool rest units. In this way, the two spindles can respectively and simultaneously machine different workpieces, or the two spindles machine the same workpiece in sequence.

[0036] As an implementation manner, in the embodiment of the present utility model, the first spindle 20 and the second tool rest unit 50 are fixedly arranged on the left side of the bed body 10, the first tool rest unit 60 and the second spindle 70 are movably arranged on the right side of the bed body 10, the tool on the first tool rest unit 60 machines the workpiece clamped by the first spindle 20, and the tool on the second tool rest unit 50 machines the workpiece clamped by the second spindle 70.

[0037] A variety of tools are respectively installed on the first tool rest unit 60 and the second tool rest unit 50 to machine the workpiece. The first displacement unit 30 enables the tool on the first tool rest unit 60 to move to the machining area of the first spindle 20 to machine the workpiece on the first spindle 20, while the second displacement unit 40 enables the second spindle 70 to move to the opposite side of the first spindle 20 to take away the workpiece on the first spindle 20. The double-spindle machine tool 100 includes a control system, and the control system is provided with a control program for each action of the machine tool. Each moving part of the double-spindle machine tool 100 of the present utility model combines with the control system of the double-spindle machine tool 100 to realize the automatic conversion of the workpiece. At the same time, in the embodiment of the present utility model, the first spindle 20 is arranged on the left side and the second spindle 70 is arranged on the right side, which is convenient for the second spindle 70 to move to the opposite side of the first spindle 20 to facilitate taking away the workpiece.

[0038] In the embodiment of the present utility model, a cutting tool is arranged on the first tool rest unit 60. In this way, during the process of the workpiece being transferred from the first spindle 20 to the second spindle 70, the part clamped by the first spindle 20 can be cut off, so as to realize the separation of the workpiece from the first spindle 20 and complete the transfer.

[0039] The hydraulic chuck 71 arranged on the second spindle 70 can be automatically loosened or automatically tightened through hydraulic control, so as to automatically clamp the workpiece and realize automatically clamping the workpiece on the first spindle 20 without manual operation.

[0040] As Figure 3 shown, the process of the double-spindle machine tool of the present utility model realizing the conversion of the workpiece without stopping includes the following steps:

[0041] S01, when the machining process of the workpiece on the first spindle 20 is approaching completion or completed, drive the second spindle 70 on the second displacement unit 40 to move to the axis of the first spindle 20 to align with the first spindle 20, and keep the first spindle 20 rotating continuously.

[0042] When the workpiece machining process on the first main shaft 20 is nearly completed or completed, the control system of the machine tool controls the second displacement unit 40 to move, so that the second main shaft 70 thereon moves to align with the first main shaft 20 on the axis of the first main shaft 20, as Figure 4 shown. At this time, the second main shaft 70 is located on the right side of the first main shaft 20 and on the central axis of the first main shaft 20 and is aligned with the first main shaft 20, that is, the second main shaft 70 at this time coincides with the central axis of the first main shaft 20 and is in a coaxial state.

[0043] In the embodiment of the present invention, whether the machining process on the first main shaft 20 is nearly completed or completed is judged by the control system, such as judging whether it is nearly completed or completed by the process of executing the program.

[0044] In the embodiment of the present invention, the alignment of the second main shaft 70 and the first main shaft 20 can be achieved by the control system of the machine tool in combination with the reference coordinates of the first main shaft 20 and the second main shaft 70.

[0045] S02, control the rotation speed and rotation direction of the hydraulic chuck 71 on the second main shaft 70 to be synchronized with the rotation speed and rotation direction of the first chuck 21 on the first main shaft 20 to meet the rotation speed and rotation direction conditions for jointly clamping the workpiece.

[0046] After the workpiece machining process on the first main shaft 20 in the embodiment of the present invention is completed, the first main shaft 20 continues to rotate. In order to take the workpiece from the rotating first main shaft 20, the rotation speed of the hydraulic chuck 71 for clamping the workpiece on the second main shaft 70 must be the same as the rotation speed of the first chuck 21 for clamping the workpiece on the first main shaft 20, and the rotation directions of the two must ensure the same direction of rotation when viewed from the same side, such as both clockwise or both counterclockwise, to ensure that after the hydraulic chuck 71 and the first chuck 21 clamp both ends of the same workpiece, the workpiece rotates in the same direction, which is to meet the rotation speed and rotation direction conditions for jointly clamping the workpiece.

[0047] Specifically, in the embodiment of the present invention, the control of the rotation speed and rotation direction of the hydraulic chuck 71 on the second main shaft 70 to be synchronized with the rotation speed and rotation direction of the first chuck 21 on the first main shaft 20 to meet the rotation speed and rotation direction conditions for jointly clamping the workpiece includes:

[0048] Obtain the first rotation speed and the first rotation direction of the first chuck 21 currently rotating on the first main shaft 20;

[0049] Obtain the second rotation speed and the second rotation direction of the hydraulic chuck 21 currently rotating on the second main shaft 20;

[0050] Adjust the rotation speed and rotation direction of the hydraulic chuck so that the second rotation speed is the same as the first rotation speed and the second rotation direction is the same as the first rotation direction.

[0051] The current rotational speed and steering parameters of the first chuck 21 and the hydraulic chuck 21 can be obtained through an encoder, an angle sensor, etc. and returned to the control system of the machine tool. After the control system of the machine tool obtains the rotational speed and steering parameters of the first chuck 21 and the rotational speed and steering parameters of the hydraulic chuck 71, it compares the rotational speeds of the two, and then adjusts the second rotational speed with the difference so that the second rotational speed is the same as the first rotational speed. At the same time, taking the same side of the machine tool as the reference plane, looking at the steering of the first chuck 21 and the hydraulic chuck 71 from the reference plane, and making the second steering of the hydraulic chuck 71 the same as the first steering of the first chuck 21.

[0052] As Figure 5 shown, looking at the steering of the first chuck 21 and the hydraulic chuck 71 from the right reference plane of the machine tool, the second steering of this hydraulic chuck 71 and the first steering of the first chuck 21 are both in the clockwise direction, and the two steers are the same. Moreover, the rotational speeds of the hydraulic chuck 71 and the first chuck 21 at this time are both n, that is, the second rotational speed is the same as the first rotational speed. At this time, the rotational speed and steering conditions for the hydraulic chuck 71 and the first chuck 21 to jointly clamp the workpiece are satisfied.

[0053] Under the rotational speed and steering conditions for the hydraulic chuck 71 and the first chuck 21 to jointly clamp the workpiece, the workpiece is stationary relative to the hydraulic chuck 71 and the first chuck 21. In this way, the function of the hydraulic chuck 71 smoothly taking the workpiece from the first chuck 21 rotating at a high speed can be realized.

[0054] It can be understood that in other embodiments, the rotational speed and steering of the hydraulic chuck of the second spindle 71 are synchronized with the rotational speed and steering of the first chuck 21 before the second spindle 70 moves to the axis of the first spindle 20.

[0055] As another implementation manner, the control of the present invention for synchronizing the rotational speed and steering of the hydraulic chuck 71 on the second spindle 70 with the rotational speed and steering of the first chuck 21 on the first spindle 20 to meet the rotational speed and steering conditions for jointly clamping the workpiece includes:

[0056] When the double-spindle machine tool 100 is initially started, the hydraulic chuck 71 on the second spindle 70 and the first chuck 21 on the first spindle 20 are driven to rotate at the same rotational speed and steering.

[0057] In one mode of the present utility model, after the double-spindle machine tool 100 is initially powered on and started, the hydraulic chuck 71 on the second spindle 70 and the first chuck 21 on the first spindle 20 start to rotate at the same speed and in the same direction. Then, the first tool rest unit 60 processes the workpiece on the first spindle 20, and the second tool rest unit 60 processes the workpiece on the second spindle 70. That is, after starting up, the first spindle 20 and the second spindle 70 process different workpieces at the same speed and in the same direction. Then, when the workpiece on the first spindle 20 needs to be transferred to the second spindle 70, the second spindle 70 first loosens the hydraulic chuck 71 at a predetermined position and takes away the processed workpiece on the hydraulic chuck 71 through a mechanism, and then enters the process of docking with the first spindle 20 to transfer the workpiece on the first spindle 20.

[0058] S03, drive the second spindle 70 to move along the axis towards the first spindle 20. When the hydraulic chuck 71 on the second spindle 70 is sleeved outside the front end of the workpiece on the first spindle 20, the second spindle 70 stops moving and the hydraulic chuck 71 on the second spindle 70 automatically tightens to clamp the workpiece.

[0059] After the rotational speed and direction of the hydraulic chuck 71 on the second spindle 70 are synchronized with those of the first chuck 21 on the first spindle 20, the second spindle 70 can be driven to move along the axis towards the first spindle 20 so that the hydraulic chuck 71 can also clamp the workpiece on the first spindle 20.

[0060] In this embodiment, the hydraulic chuck 71 of the second spindle 70 moves together with the second spindle 70 until the hydraulic chuck 71 is sleeved outside the front end of the workpiece on the first spindle 20. That is, at this time, the front end of the workpiece on the first spindle 20 is accommodated in the hydraulic chuck 71 of the second spindle 70 and reaches a predetermined length. Then, the second spindle 70 stops moving towards the first spindle 20 and the hydraulic chuck 71 on the second spindle 70 automatically tightens to clamp the workpiece. The predetermined length that the front end of the workpiece is accommodated in the hydraulic chuck 71 can be achieved by controlling the second spindle 70 to move a predetermined stroke towards the first spindle 20 through a control system, or can be achieved by setting an induction sensor in the hydraulic chuck 71 or setting an image sensor on the second spindle 70.

[0061] As Figure 6 shown, at this time, the hydraulic chuck 71 and the first chuck 21 jointly clamp both ends of the workpiece 200 on the first spindle 20 without stopping rotation.

[0062] Preferably, before driving the second spindle 70 to move along the axis towards the first spindle 20, it further includes: controlling the hydraulic chuck 71 on the second spindle 70 to automatically open to prepare for clamping the workpiece on the first spindle 20.

[0063] S04, drive the cutting tool on the first turret unit 60 to actuate and cut the workpiece on one side of the first spindle.

[0064] The cutting tool (not shown) is mounted on the first turret unit 60 and is used to cut the workpiece jointly clamped by the first chuck 21 and the hydraulic chuck 71 from the side close to the first spindle 20. In this way, the workpiece clamped on the hydraulic chuck 71 of the second spindle 70 is the workpiece after the machining process of the first spindle 20, that is, the workpiece on the first spindle 20 is divided into two parts by the cutting tool. As Figure 6 shown in the figure, the first part is the left end of the workpiece, and the second part is the part of the workpiece after being processed by the tool of the first turret unit 60 and the right end of the workpiece. After the workpiece 200 is cut, the first part is clamped by the first chuck 21, and the second part is clamped by the hydraulic chuck 71.

[0065] S05, drive the second spindle 70 clamping the workpiece to leave the first spindle 20 and move to the machining area corresponding to the second turret unit 50.

[0066] When the workpiece on the first spindle 20 that has completed the corresponding machining process is cut, the control system of the machine tool drives the second displacement unit 40 to move, so that the second spindle 70 leaves the first spindle 20 and moves to the machining area corresponding to the second turret unit 50 for the next machining process of the workpiece. As Figure 7 shown in the figure, after the second spindle 70 enters the machining area opposite to the second turret unit 50, the tool on the second turret unit 50 can machine the workpiece clamped on the second spindle 70.

[0067] A double-spindle machine tool 100 of the present invention uses the above process of converting workpieces without stopping the rotation of the double-spindle machine tool to convert workpieces. This machine tool 100 can transfer the workpiece from the first spindle 20 to the second spindle 70 for clamping without stopping the rotation of the first spindle 20 and the second spindle 70, so that the workpiece does not need to stop and start during the process conversion, greatly improving the production efficiency.

[0068] Preferably, as Figure 7 shown, the first spindle 20 of the double-spindle machine tool 100 in the embodiment of the present invention and the second turret unit 50 are fixedly arranged on the left side of the bed 10, and the first turret unit 60 and the second spindle 70 are movably arranged on the right side of the bed 10. As a way, the first spindle 20 is located at the left rear part of the bed 10, the second turret unit 50 is located at the left front part of the bed 10, the first turret unit 60 is located at the right rear part of the bed 10, and the second spindle 70 is located at the right front part of the bed 10.

[0069] In this way, the first main shaft 20 and the second main shaft 70 are diagonally arranged, and the first tool rest unit 60 and the second tool rest unit 50 are also diagonally arranged to ensure that the workpiece machining on the first main shaft 20 and the second main shaft 70 does not interfere with each other. At the same time, it is also convenient for the second main shaft 70 to move to the opposite side of the first main shaft 20 for workpiece docking conversion.

[0070] Specifically, as Figure 2 , Figures 7 to 9 shown, the first displacement unit 30 of the double-spindle machine tool 100 according to the embodiment of the present invention includes a first Z-direction moving module 31 arranged on the bed 10, a first X-direction moving module 32 arranged on the first Z-direction moving module 31, and a first Y-direction moving module 33 arranged on the first tool rest unit 60. The first tool rest unit 60 is arranged on the first X-direction moving module 32. The first Z-direction moving module 31 enables the first X-direction moving module 32 and the first tool rest unit 60 to linearly move back and forth as a whole in the Z1 direction as shown in Figure 7 shown. The first X-direction moving module 32 enables the first tool rest unit 60 to linearly move back and forth in the X1 direction as shown in Figure 7 shown. The first Y-direction moving module 33 enables the tool on the tool disc 61 of the first tool rest unit 60 to approach or move away from the top plane of the bed 10. In this way, the first displacement unit 30 of the embodiment of the present invention enables the tool on the first tool rest unit 60 to move in all three XYZ directions to flexibly machine the workpiece on the first main shaft 20. At the same time, various tools are arranged on the tool disc 61 of the first tool rest unit 60, such as drilling, milling tools, and cutting tools.

[0071] Furthermore, as Figure 8 and Figure 9 shown, the first X-direction moving module 32 of the embodiment of the present invention is arranged at an angle with the horizontal plane of the top of the bed 10 and is in an inclined state. Specifically, the first Z-direction moving module 31 of the embodiment of the present invention includes an inclined saddle 311. The top of the inclined saddle 311 has an inclined mounting surface for mounting the first X-direction moving module 32. The inclined saddle 311 can slide along the Z1 direction on the bed 10. At the same time, the inclined saddle 311 mounts the first X-direction moving module 32, so that the first X-direction moving module 32 is also in an inclined state with the top surface of the bed 10. The inclined first X-direction moving module 32 shortens the projection length of the first X-direction moving module 32 on the top plane of the bed 10, thereby reducing the occupied length of the first X-direction moving module 32 on the top plane of the bed 10, saving space, and reducing the size of the bed 10.

[0072] As Figure 2As shown in the figure, the second displacement unit 40 of the double-spindle machine tool 100 according to the embodiment of the present invention includes a second X-direction moving module 41 disposed on the machine body 10, and a second Z-direction moving module 42 disposed on the second X-direction moving module 41. The second main shaft 70 is disposed on the second Z-direction moving module 42. The second X-direction moving module 41 enables the second Z-direction moving module 42 and the second main shaft 70 to linearly move back and forth as a whole in the X2 direction as shown in Figure 7 the figure. The second Z-direction moving module 42 enables the second main shaft 70 to linearly move back and forth in the Z2 direction as shown in Figure 7 the figure. In this way, the second displacement unit 40 enables the workpiece on the second main shaft 70 to move in the XZ direction.

[0073] Further, a second Y-direction moving module 80 is further disposed on the second tool rest unit 50 of the double-spindle machine tool 100 according to the embodiment of the present invention. The second Y-direction moving module 80 enables the tool on the second tool rest unit 50 to move back and forth in the Y direction perpendicular to the top plane of the machine body 10. Combining with the XZ-direction movement of the second displacement unit 40, it also enables the workpiece on the second main shaft 20 to be flexibly machined by the tool in the XYZ directions.

[0074] Except for the inclined saddle 311, the other structures of the first Z-direction moving module 31 of the double-spindle machine tool 100 according to the embodiment of the present invention are basically the same as the other structures of the first X-direction moving module 32, the second X-direction moving module 41, and the second Z-direction moving module 42. Here, the second Z-direction moving module 42 is taken as an example to illustrate the basic composition of the moving module. As shown in Figure 10 the figure, the second Z-direction moving module 42 of the double-spindle machine tool 100 according to the embodiment of the present invention includes a motor 421, a coupling 422, a lead screw 423, a base 424, and a sliding seat 425.

[0075] Among them, the motor 421, the coupling 422, and the lead screw 423 are connected in sequence. The sliding seat 425 is installed on the lead screw 423, and a linear guide rail is installed between the sliding seat 425 and the base 424. The rotation of the motor 421 drives the rotation of the lead screw 423, and the rotation of the lead screw 423 pushes the sliding seat 425 to linearly move on the base 424 through a lead screw nut.

[0076] The double-spindle machine tool 100 of the present utility model is provided with a first spindle 20, a second spindle 70, a first displacement unit 30, a second displacement unit 40, a first tool rest unit 60, and a second tool rest unit 50. The first tool rest unit 60 is movable, and the second spindle 70 is movable. At the same time, a cutting tool is provided on the first tool rest unit 60, and a hydraulically chuck 71 with automatic clamping and loosening is provided on the second spindle 70. In this way, during the workpiece processing, through the synchronous matching of the rotational speed and direction of rotation of the second spindle 70 and the first spindle 20, the workpiece can be switched and clamped without stopping the rotation, achieving the purpose of switching the process without stopping the machine, and improving the production and processing efficiency of the machine tool.

[0077] The above are only examples clearly illustrating the present utility model, and do not limit the patent scope of the present utility model. It is impossible to enumerate all implementation manners here. Any equivalent structural transformation made by using the content of the technical solution of the present utility model under the concept of the present utility model, or direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims

1. A double-spindle machine tool, characterized in that, It includes a control system, a bed body, a first spindle arranged on the bed body, a first displacement unit, a second displacement unit, a second tool rest unit, a first tool rest unit arranged on the first displacement unit, and a second spindle arranged on the second displacement unit. The tool on the first tool rest unit processes the workpiece clamped by the first spindle, and the tool on the second tool rest unit processes the workpiece clamped by the second spindle. A cutting tool is arranged on the first tool rest unit, a first chuck is arranged on the first spindle, and a hydraulically actuated chuck with automatic clamping and unclamping is arranged on the second spindle.

2. The twin-spindle machine tool according to claim 1, characterized in that The first displacement unit includes a first Z-direction moving module arranged on the bed body, a first X-direction moving module arranged on the first Z-direction moving module, and a first Y-direction moving module arranged on the first tool rest unit. The first tool rest unit is arranged on the first X-direction moving module.

3. The double-spindle machine tool according to claim 2, characterized in that The first X-direction moving module is arranged at an angle with the horizontal plane at the top of the bed body and is in an inclined state.

4. The double-spindle machine tool according to claim 3, characterized in that, The first Z-direction moving module includes an inclined saddle, and the top of the inclined saddle has an inclined mounting surface for mounting the first X-direction moving module.

5. The double-spindle machine tool according to claim 1, characterized in that The second displacement unit includes a second X-direction moving module arranged on the bed body, a second Z-direction moving module arranged on the second X-direction moving module, and the second spindle is arranged on the second Z-direction moving module.

6. The double-spindle machine tool according to claim 1, wherein, A second Y-direction moving module is further arranged on the second tool rest unit.

7. The double-spindle machine tool according to claim 1, characterized in that, The first spindle and the second tool rest unit are fixedly arranged on the left side of the bed body, and the first tool rest unit and the second spindle are movably arranged on the right side of the bed body; wherein the first spindle is located at the left rear part of the bed body, the second tool rest unit is located at the left front part of the bed body, the first tool rest unit is located at the right rear part of the bed body, and the second spindle is located at the right front part of the bed body.

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