Turning and rolling compound CNC machine tools

Abstract

The present invention provides a turning and rolling compound CNC machine tool, comprising a frame, a workpiece clamping mechanism disposed on the frame and used to drive the workpiece to rotate, a turret mechanism used to transport the workpiece to the workpiece clamping mechanism for clamping and fixing and processing the workpiece, and a hob mechanism used to perform gear hobbing on the workpiece on the workpiece clamping mechanism. The present invention provides a turning and rolling compound CNC machine tool, which uses a turret mechanism to load and unload the workpiece. After the turret mechanism places the workpiece on the workpiece clamping mechanism, the workpiece clamping mechanism drives the workpiece to rotate, the turret mechanism processes the workpiece, and the hob mechanism can also process the workpiece. In this way, multiple processing can be performed on the same machine tool without multiple installation and disassembly of the workpiece, thereby achieving the effect of improving work efficiency and processing accuracy.

Description

Technical Field

[0001] The invention relates to the field of machine tools, in particular to a turning and rolling compound CNC machine tool. Background Art

[0002] In mechanical processing, a single workpiece often needs to undergo multiple types of processing. However, due to the single processing function of current processing machines, multiple processing machines are needed to process the workpiece. In this process, the workpiece needs to be frequently disassembled and installed on each machine tool. Multiple clamping causes a decrease in processing accuracy and low processing efficiency. Summary of the invention

[0003] The present invention solves the technical problem that the machine tool cannot perform multiple processing when processing workpieces, and combines multiple processing procedures such as turning, gear hobbing, milling, drilling and pinning into one machine tool, so that multiple processing procedures can be completed by one clamping, the processing accuracy can be improved, and the auxiliary time can be reduced. The present invention provides a turning and rolling composite CNC machine tool with a simple structure and reasonable design.

[0004] The present invention is achieved through the following technical solutions:

[0005] A turning and rolling compound CNC machine tool comprises a frame, a workpiece clamping mechanism arranged on the frame and used to drive the workpiece to rotate, a turret mechanism used to transport the workpiece to the workpiece clamping mechanism for clamping and fixing and processing the workpiece, and a hobbing cutter mechanism used to perform gear hobbing on the workpiece on the workpiece clamping mechanism.

[0006] In the turning and rolling compound CNC machine tool as described above, the turret mechanism includes a turret body, a tool disc mechanism arranged on the turret body and used to fix multiple tools, a loading and unloading mechanism arranged on the tool disc mechanism for picking up and placing workpieces, and a rotating mechanism for driving the tool disc mechanism to rotate so that the loading and unloading mechanism rotates to the loading and unloading station or rotates the tool to the corresponding processing station.

[0007] As described above, the turning and rolling compound CNC machine tool has a turret longitudinal movement mechanism for driving the turret mechanism to move up and down in the vertical direction, and a turret transverse movement mechanism for driving the turret body to move the tool transversely to approach or move away from the processing station.

[0008] As described above, in the turning and rolling compound CNC machine tool, the workpiece clamping mechanism includes a first clamping member and a second clamping member that can be relatively approached or moved away from each other to clamp or release the workpiece located at the processing station, the first clamping member includes a first chuck and a first power mechanism that rotates the first chuck around the axis of the first chuck, and the second clamping member includes a second chuck and a second power mechanism that moves the second chuck in the axial direction of the second chuck.

[0009] As described above, in the turning-rolling compound CNC machine tool, the first clamping member includes a first shell, the first power mechanism includes a main shaft arranged in the first shell, the main shaft is coaxially provided with a rotor and a stator from the inside to the outside in its radial direction, and the main shaft is respectively provided with a front end bearing assembly and a rear end bearing assembly in its axial direction, the front end bearing assembly and the rear end bearing assembly are located on both sides of the rotor and the stator, and the first chuck is provided at one end of the main shaft close to the front end bearing assembly.

[0010] As described above, in the turning and rolling compound CNC machine tool, the hob mechanism includes a hob fixing device for clamping the hob and driving the hob to rotate, and a swing angle device for driving the hob fixing device to turn, and the steering plane of the swing angle device is parallel to the central axis of the workpiece clamping mechanism driving the workpiece to rotate.

[0011] As described above, in the turning and rolling compound CNC machine tool, a hob longitudinal movement mechanism for driving the hob mechanism to move up and down in the vertical direction, and a hob transverse movement mechanism for driving the hob mechanism to move transversely to approach or move away from the processing station are provided between the hob mechanism and the frame.

[0012] In the turning and rolling compound CNC machine tool as described above, the swing device includes a swing device body, and a slide seat arranged on the swing device body and turning relative to the swing device body, the hob fixing device is arranged on the slide seat, and a hydraulic locking mechanism is arranged between the swing device body and the slide seat for keeping the two in a fixed state or releasing the fixed state.

[0013] As described above, in the turning and rolling compound CNC machine tool, the hydraulic locking mechanism includes a locking mechanism arranged on the angle swing device body so that the slide fits tightly against the angle swing device body to lock it or makes the slide detach from the angle swing device body and forms a gap with the angle swing device body to unlock it, and the locking mechanism includes an installation cavity arranged in the angle swing device body and a locking component arranged in the installation cavity and moves along the installation cavity to push the slide so that the slide detaches from the angle swing device body or tightens the slide so that the slide fits tightly against the angle swing device body.

[0014] The turning and rolling compound CNC machine tool as described above further comprises a chip conveyor arranged below the workpiece clamping mechanism, and the machine frame is provided with a bed chip removal opening arranged corresponding to the chip conveyor.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The present invention provides a turning and rolling compound CNC machine tool, which uses a turret mechanism to load and unload workpieces. After the turret mechanism places the workpiece on the workpiece clamping mechanism, the workpiece clamping mechanism drives the workpiece to rotate, the turret mechanism processes the workpiece, and the hobbing mechanism can also process the workpiece. In this way, multiple processing can be performed on the same machine tool without the need to install and disassemble the workpiece multiple times, thereby achieving the effect of improving work efficiency and processing accuracy. By combining multiple processing procedures such as turning, hobbing, milling, and drilling into one machine tool, it is possible to achieve one-time clamping, complete multiple processing procedures, improve processing accuracy, and reduce auxiliary time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 is a front view of the turret mechanism of the present invention;

[0020] Figure 3 It is a right side view of the turret mechanism of the present invention;

[0021] Figure 4 yes Figure 2 AA section view;

[0022] Figure 5 yes Figure 2 BB cross-sectional view;

[0023] Figure 6 It is a structural schematic diagram of the workpiece clamping mechanism of the present invention;

[0024] Figure 7 is a half-section view of a first clamping member of the present invention;

[0025] Figure 8 yes Figure 7 A magnified view of point A;

[0026] Fig. 9 is a half-section view of a second clamping member of the present invention;

[0027] Fig.10 It is a half-section view of the hob mechanism of the present invention. DETAILED DESCRIPTION

[0028] In order to make the technical problem, technical solution and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] When the embodiments of the present invention mention ordinal numbers such as "first" and "second", unless they do express the meaning of order according to the context, they should be understood as being merely for the purpose of distinction.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" 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 components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The turning and rolling compound CNC machine tool comprises a frame 1, a workpiece clamping mechanism 2 arranged on the frame 1 and used to drive the workpiece to rotate, a turret mechanism 3 used to transport the workpiece to the workpiece clamping mechanism 2 for clamping and fixing and processing the workpiece, and a hobbing cutter mechanism 4 used to perform gear hobbing on the workpiece on the workpiece clamping mechanism 2.

[0032] Further, as a preferred embodiment of the present solution but not limiting, the turret mechanism 3 includes a turret body 31, a cutter head mechanism 32 disposed on the turret body 31 and used to fix a plurality of cutting tools, a loading and unloading mechanism 33 disposed on the cutter head mechanism 32 and used to pick up and place workpieces, and a rotating mechanism 34 for driving the cutter head mechanism 32 to rotate so that the loading and unloading mechanism 33 rotates to a loading and unloading station or the cutting tool rotates to a corresponding processing station. In this way, the loading and unloading mechanism is arranged on the cutter head mechanism, and the workpiece can be placed on the processing station or removed from the processing station by utilizing the function that the turret mechanism itself can rotate, so as to realize the operation of automatic loading and unloading, which can not only improve production efficiency, but also reduce manual labor, save labor costs, and greatly reduce the safety risks of operators.

[0033] Further, as a preferred embodiment of the present invention but not limiting, the frame 1 is provided with a turret longitudinal moving mechanism 39 for driving the turret mechanism 3 to move up and down in the vertical direction, and a turret transverse moving mechanism 35 for driving the turret body 31 to move the tool transversely to approach or move away from the processing station. After the loading and unloading mechanism clamps the workpiece 330, the rotating mechanism drives the cutter disc mechanism to rotate, so that the workpiece turns to the direction of the processing station. At this time, the turret transverse moving mechanism drives the turret body, that is, drives the workpiece to move in the direction of the processing station until the workpiece is placed on the processing station. In this embodiment, the rotating mechanism includes a gear box motor. The turret longitudinal moving mechanism can greatly increase the moving space of the loading and unloading mechanism to facilitate loading and unloading operations. The effect of placing the workpiece on the processing station or removing the workpiece from the processing station is achieved to realize the operation of automatic loading and unloading, which can not only improve production efficiency, but also reduce manual labor, save labor costs, and greatly reduce the safety risks of operators.

[0034] Furthermore, as a preferred embodiment of the present invention but not limiting, a longitudinal moving platform 36 is further included, and a turret transverse sliding mechanism 37 is provided between the longitudinal moving platform 36 and the turret body 31 for enabling the turret body 31 to transversely move relative to the longitudinal moving platform 36. The turret transverse sliding mechanism is used to enable the turret body to slide transversely relative to the longitudinal moving platform, so as to facilitate the movement of the tool 320 and the workpiece.

[0035] Further, as a preferred embodiment of the present invention but not limiting, the turret transverse sliding mechanism 37 includes two turret transverse slide rails 371 which are transversely arranged on the longitudinal moving platform 36 and are parallel to each other, and a turret transverse slider 372 which cooperates with the turret transverse slide rails 371, and the turret body 31 is arranged on the turret transverse slider 372. The double slide rail method of two turret transverse slide rails can improve the accuracy of the transverse movement of the turret body, and at the same time can reduce the pressure on the turret transverse slide rails, so as to avoid the weight of the turret body affecting the smoothness of the transverse movement of the turret body.

[0036] Further, as a preferred embodiment of the present invention but not limiting, the turret transverse movement mechanism 35 includes a transverse drive motor 351 disposed on the longitudinal movement platform 36, and a transverse screw rod 352 disposed on the output end of the transverse drive motor 351 and used to drive the turret body 31 to move along the length direction of the turret transverse slide rail 371. The screw rod structure can improve the movement accuracy of the turret body, that is, improve the movement accuracy of the tool and the workpiece.

[0037] Further, as a preferred embodiment of the present invention but not a limitation, a pad 373 for supporting the turret transverse slider 372 is provided on the side of the turret transverse slide 371 away from the other turret transverse slide 371. Since the weight of the turret body is heavy, the turret body can move laterally relative to the longitudinal moving platform by relying on the cooperation and support of the turret transverse slider and the turret transverse moving slide. At this time, the turret transverse moving slide located above is subjected to a pulling force that pulls it away from the longitudinal moving platform, while the turret transverse moving slide located below is subjected to a pressure that squeezes it toward the moving platform. Since there is a gap between the turret transverse slider and the longitudinal moving platform, the gap provides space for the turret body to tilt. In order to avoid the turret body from tilting, keep the tool position accurate, and improve the processing accuracy, a pad for supporting the turret transverse slider is provided on the side of the turret transverse slide away from the other turret transverse slide. The pad is set along the length direction of the turret transverse slide rail and is close to the turret transverse slider. When the turret body is slightly tilted, the turret transverse slider at the bottom is pressed against the pad below to prevent further tilting. At this time, the upper pad can be replaced to keep it in contact with the upper turret transverse slider to prevent the turret body from shaking in the vertical direction. The pad is detachably connected to the longitudinal moving platform and can be replaced after being worn. In addition, according to the inclination of the turret body, if it is within the accuracy requirement range, pads of corresponding thickness can be used to prevent the turret body from shaking so that the turret body can continue to be used. If the inclination of the turret body exceeds the accuracy requirement range, further maintenance is required, such as replacing the turret transverse slider, turret transverse slide rail, etc. In normal use, if the turret body is slightly tilted, it is difficult to detect. After the pad is set, it can be judged whether the turret body is tilted by observing whether there are scratches on the surface of the pad.

[0038] Further, as a preferred embodiment of the present solution but not a limitation, the loading and unloading mechanism 33 includes a clamping device 331 for clamping the workpiece, and a telescopic device 332 for driving the clamping device 331 to move away from or close to the cutter disc mechanism 32. When loading and unloading operations are performed, the rotating mechanism first drives the cutter disc mechanism to rotate so that the clamping device is aligned with the pre-placed position of the workpiece, and then the clamping device releases the clamping jaws, and the telescopic device extends to move the clamping device toward the workpiece to the workpiece position, and then the clamping device tightens the clamping jaws to clamp the workpiece, and then the telescopic device retracts to move the clamping device toward the cutter disc mechanism. The workpiece is separated from the pre-placed position. Then the rotating mechanism works so that the cutter disc mechanism rotates in the direction of the workpiece corresponding to the processing position, and then the telescopic device extends to move the clamping device toward the processing station, and finally the workpiece is placed on the processing station.

[0039] Further, as a preferred embodiment of the present invention but not limiting, the cutter disc mechanism 32 includes a circular cutter disc body 321, and the loading and unloading mechanism 33 and a plurality of tool clamping devices 322 for clamping tools are distributed on the periphery of the cutter disc body 321. The loading and unloading mechanism and the tool clamping device are both arranged on the cutter disc body, and the cutter disc body is rotated to achieve the function of moving the workpiece.

[0040] Further, as a preferred embodiment of the present invention but not limiting, the turret longitudinal movement mechanism 39 includes turret longitudinal movement rails 391 which are parallel to each other and vertically arranged on the frame 38, a turret longitudinal movement platform 392 which slides in cooperation with the turret longitudinal movement rails 391, a longitudinal drive motor 393 arranged on the frame 38, and a longitudinal screw rod 394 which is arranged at the output end of the longitudinal drive motor 393 and is used to drive the turret body 31 to move along the length direction of the turret longitudinal movement rails 391. The turret longitudinal movement mechanism and the turret transverse movement mechanism jointly provide a moving stroke for the workpiece.

[0041] Further, as a preferred embodiment of the present invention but not limiting, the workpiece clamping mechanism 2 includes a first clamping member 21 and a second clamping member 22 which can be relatively close to or away from each other to clamp or release the workpiece located at the processing station, the first clamping member 21 includes a first chuck 211 and a first power mechanism 212 which rotates the first chuck 211 around the axis of the first chuck 211, and the second clamping member 22 includes a second chuck 221 and a second power mechanism 222 which moves the second chuck 221 in the axial direction of the second chuck 221. The first chuck 211 and the second chuck 221 are conical, and a processing hole for inserting the first chuck 211 and the second chuck 221 is preset on the workpiece to be processed. The workpiece to be processed is first placed on the first chuck 211, i.e., on the processing station, through the turret mechanism, and the second chuck 221 slides along the frame 1 close to the first chuck 211 to clamp the workpiece to be processed. During the processing, the first power mechanism 212 is started to rotate the workpiece to be processed. In summary, it can be seen that the workpiece clamping mechanism utilizes the first chuck and the second chuck to clamp the workpiece instead of single-side clamping to meet the complex processing requirements of the workpiece.

[0042] Further, as a preferred embodiment of the present solution but not limiting, the first clamping member 21 includes a first housing 213, the first power mechanism 212 includes a main shaft 2121 disposed in the first housing 213, the main shaft 2121 is coaxially provided with a rotor 2122 and a stator 2123 from the inside to the outside in its radial direction, the main shaft 2121 is respectively provided with a front end bearing assembly 2124 and a rear end bearing assembly 2125 in its axial direction, the front end bearing assembly 2124 and the rear end bearing assembly 2125 are located on both sides of the rotor 2122 and the stator 2123, and the first chuck 211 is provided at one end of the main shaft 2121 close to the front end bearing assembly 2124. Specifically, the rear end bearing assembly 2125 is a cylindrical roller bearing. The rear end bearing assembly 2125 adopts a cylindrical roller bearing, which is beneficial to reduce friction, reduce noise, and improve the rigidity of the shaft, thereby improving the performance of the bearing and the service life of the first power mechanism 212; at the same time, it can realize high-speed and low-speed rotation of the workpiece to be processed, and can achieve both high-speed and small torque and low-speed and large torque.

[0043] During the processing of the workpiece, debris will be generated, and these debris are very easy to fall on the workpiece clamping mechanism, especially on the first clamping member 21 located below. In the long run, it is easy to cause blockage of the first clamping member 21 and increase maintenance costs. In order to solve this problem, further, the first shell 213 is provided with a gas sealing mechanism 23 for preventing debris from falling into the first clamping member 21.

[0044] Specifically, the first shell 213 includes a shell body 2131 and an upper cover 2132 arranged on the shell body 2131 near one end of the first chuck 211, the gas sealing mechanism 23 includes an airtight groove 231 arranged in an annular manner around the shell body 2131, the airtight groove 231 and the inner wall of the upper cover 2132 form an airtight channel 232, the shell body 2131 is provided with an air inlet channel 233 connected to the airtight channel 232 and an air inlet hole connected to the air inlet channel 233, an air pipe joint 234 is provided in the air inlet hole, the upper cover 2132 and the shell body 2131 form a gap 235 arranged around the upper cover 2132 and connected to the airtight channel 232, and the gas flows into the air inlet channel 233 and the airtight channel 232 through the air pipe joint 234 and is discharged from the gap 235. This structure forms the airtight channel 232 by inflating the airtight groove 231 and the inner wall of the upper cover 2132, so that the internal air pressure is increased and the gas is discharged from the gap 235 to form a gas thrust, so that the debris dropped during the processing is blown away from the first clamping member 21, thereby avoiding the blockage of the first clamping member 21. The airtight channel 232 cleverly utilizes the original parts of the first clamping member 21, and the effect can be achieved without adding new parts, and the structure is simple and compact.

[0045] Further, the second clamping member 22 includes a second housing 223, the second power mechanism 222 includes a sleeve 2221 disposed in the second housing 223 and a slide bar 2222 disposed in the sleeve 2221 and movable in the clamping direction, and the slide bar 2222 is provided with the second clamping head 221 at one end thereof close to the first clamping member 21. Specifically, the end of the slide bar 2222 away from the second clamping head 221 passes through the sleeve 2221 and can be clamped on the sleeve 2221, the end of the slide bar 2222 away from the second clamping head 221 can be moved to fit or detach from the sleeve 2221 under the action of an external force, and the slide bar 2222 is sleeved with an elastic member 2223 that elastically presses the slide bar 2222 to make the end of the slide bar 2222 away from the second clamping head 221 move to fit the sleeve 2221. When the second clamping member 22 moves close to the first clamping member 21 to clamp the workpiece or to perform process processing after clamping the workpiece, the sliding rod 2222 can generate a short-distance displacement in the axial direction to prevent deformation caused by rigid contact.

[0046] Furthermore, the sleeve 2221 is provided with a through hole 24, and the slide bar 2222 is threadedly connected to a first nut 25 at one end through the through hole 24, and the slide bar 2222 is clamped on the sleeve 2221 through the first nut 25. This structure is simple and easy to implement. The slide bar 2222 includes an upper slide bar 22221 threadedly connected to the first nut 25, and the end of the upper slide bar 22221 away from the first nut 25 is connected to a lower slide bar 22222, the diameter of the upper slide bar 22221 is smaller than the aperture of the sleeve 2221, the diameter of the lower slide bar 22222 is larger than the diameter of the upper slide bar 22221, and the elastic member 2223 is sleeved on the upper slide bar 22221. This structure can strengthen the pressure of the elastic member 2223 on the lower slide bar 22222, so that the slide bar 2222 is quickly reset and fits on the sleeve 2221.

[0047] Furthermore, the sleeve 2221 is sleeved with a first bearing group 26, a bearing spacer group 27 and a second bearing group 28 distributed along its axial direction. This structure can enhance the stability of the second clamping member 22 structure and improve its practical life. The end of the sleeve 2221 close to the second chuck 221 is clamped on the second shell 223, and the end of the sleeve 2221 away from the second chuck 221 is threadedly connected with a second nut 29. This fixing structure is simple and easy to implement.

[0048] Further, as a preferred implementation mode of the present scheme but not a limitation, the hob mechanism 4 includes a hob fixing device for clamping the hob and driving the hob to rotate, and a swing angle device 5 for driving the hob fixing device to turn, and the steering plane of the swing angle device 5 is parallel to the central axis of the workpiece clamping mechanism 2 driving the workpiece to rotate. In order to perform gear hobbing on the workpiece from multiple angles, the swing angle device drives the hob fixing device to rotate, so that the steering plane of the swing angle device is parallel to the central axis of the workpiece clamping mechanism driving the workpiece to rotate. In this embodiment, initially, the rotation axis of the hob is located on a horizontal plane. When gear hobbing is required, the swing angle device drives the hob to turn, that is, the rotation axis of the hob rotates on a vertical plane.

[0049] Further, as a preferred embodiment of the present invention but not limiting, a hob longitudinal movement mechanism for driving the hob mechanism 4 to move up and down in the vertical direction and a hob transverse movement mechanism for driving the hob mechanism 4 to move transversely to approach or move away from the processing station are provided between the hob mechanism 4 and the frame 1. The hob transverse movement mechanism drives the hob to move transversely to achieve the effect of cutting.

[0050] Further, as a preferred embodiment of the present solution but not a limitation, the angle swing device 5 includes an angle swing device body 51, and a slide 52 disposed on the angle swing device body 51 and turned relative to the angle swing device body 51, the roller cutter fixing device is disposed on the slide 52, and a hydraulic locking mechanism for keeping the two in a fixed state or releasing the fixed state is disposed between the angle swing device body 51 and the slide 52. When the hydraulic locking mechanism is locked, the slide and the angle swing device body remain in a fixed state and cannot rotate relative to each other. When the hydraulic locking mechanism is released, the slide and the angle swing device body are released from the fixed state and can rotate relative to each other.

[0051] Furthermore, as a preferred embodiment of the present invention but not a limitation, the hydraulic locking mechanism includes a locking mechanism 53 arranged on the angle swing device body 51 so that the slide 52 is tightly fitted into the angle swing device body 51 to lock or so that the slide 52 is separated from the angle swing device body 51 and a gap is formed with the angle swing device body 51 to unlock, the locking mechanism 53 includes an installation cavity 531 arranged in the angle swing device body 51 and a locking assembly 532 arranged in the installation cavity 531 and moving along the installation cavity 531 to push the slide 52 so that the slide 52 is separated from the angle swing device body 51 or the slide 52 is tightened so that the slide 52 is tightly fitted with the angle swing device body 51.

[0052] Specifically, the locking mechanism 53 includes a mounting cavity 531 disposed in the angle swing device body 51 and a locking assembly 532 disposed in the mounting cavity 531 and moving along the mounting cavity 531 to push the slide 52 so that the slide 52 is separated from the angle swing device body 51 or to tighten the slide 52 so that the slide 52 is closely attached to the angle swing device body 51. By arranging the mounting cavity 531 on the angle swing device body 51, when the locking assembly 532 slides along the mounting cavity 531 under the action of an external force to push the slide 52 so that the slide 52 is separated from the angle swing device body 51 to form a gap, it is in an unlocked state; when the external force disappears, the locking assembly 532 resets and tightens the slide 52 so that the slide 52 is closely attached to the angle swing device body 51 and the gap disappears, it is in a locked state. The locking assembly 532 disposed in the installation cavity 531 is moved along the installation cavity 531 by external force to push and pull the slide seat to achieve locking and unlocking of the slide seat 52. The problem of complex structure and difficult maintenance of the existing hydraulic locking mechanism is overcome.

[0053] Specifically, the locking assembly 532 includes a slider 5321 disposed in the installation cavity 531 and moving toward the slide seat 52 to push the slide seat 52 so that the slide seat 52 is separated from the swing angle device body 51. The slide seat 52 is connected to the slider 5321. The slider 5321 is sleeved with an elastic member 5322 that presses the slider 5321 toward the installation cavity 531 so that the slide seat 52 is closely attached to the swing angle device body 51. The elastic member 5322 may be a disc spring. The slider 5321 moves toward the slide seat 52 under the action of an external force. When the external force is eliminated, the slider 5321 moves in the opposite direction under the action of the elastic member 5322. This structure is simple, low in cost and easy to maintain.

[0054] Furthermore, the slider 5321 includes a connecting portion 53211 connected to the sliding seat 52, and a sliding portion 53212 is provided at one end of the connecting portion 53211 away from the sliding seat 52, and the outer wall of the sliding portion 53212 is attached to the inner wall of the mounting cavity 531, and the sliding portion 53212 is provided with a yield groove 515 that matches the shape of the elastic member 5322. As can be seen from the figure, the diameter of the connecting part 53211 is smaller than the diameter of the sliding part 53212, and the elastic member 5322 can only be set on the connecting part 53211 and elastically press the sliding part 53212. At this time, the installation of the elastic member 5322 is more stable, and the elastic pressure on the sliding part 53212 is greater; as can be seen from the figure, the outer wall of the sliding part 53212 is attached to the inner wall of the installation cavity 531. This structure can ensure that the slider 5321 is more stable when sliding along the installation cavity 531. When the external force is gas thrust, the contact surface can be maximized, the utilization rate of gas and the effect of pushing can be improved. As can be seen from the figure, the sliding part 53212 is provided with a clearance groove 515 that matches the shape of the elastic member 5322. This structure can ensure that when the elastic member 5322 is set on the sliding part 53212, the elastic member 5322 is fixed, and the stability is improved.

[0055] Furthermore, a first cover plate 54 is provided at one end of the installation cavity 531 away from the slide seat 52, and an air inlet hole 55 is provided on the first cover plate 54 for gas to enter the installation cavity 531. The air inlet hole 55 is connected to an external cylinder and is used to inflate the installation cavity 531 to provide gas thrust to achieve the movement of the slider 5321. Compared with other power mechanisms, the gas external force can further simplify the structure and reduce the cost. A second cover plate 56 is provided at one end of the installation cavity 531 close to the slide seat 52. The second cover plate 56 is a cylinder cover plate. This structure can improve the air tightness of the installation cavity 531, which is conducive to increasing the pressure and making the gas thrust stronger. A through hole 57 is provided on the second cover plate 56 for the slider 5321 to pass through. The slider 5321 passes through the through hole 57 to connect with the slide seat 52. Further, the outer wall of the connecting portion 53211 is attached to the inner wall of the through hole 57. This structure can further improve the air tightness of the installation cavity 531, which is beneficial to increasing the pressure and making the gas thrust stronger.

[0056] Specifically, the first cover plate 54 and the second cover plate 56 are fixedly connected to the angle swing device body 51 by screws.

[0057] Furthermore, the slide 52 is provided with a T-shaped groove 58 arranged in an annular manner along the circumferential direction of the slide 52, a T-shaped nut 59 is provided in the T-shaped groove 58, and the end of the T-shaped nut 59 away from the slide 52 is threadedly connected to the slider 5321. The T-shaped nut 59 is clamped in the groove 58, and when the slide 52 is separated from the angular swing device body 51 and rotates, the T-shaped groove 58 rotates with the slide 52 relative to the T-shaped nut 59. With this fixing structure, the structure is simple and compact, and the slide 52 can be rotated relative to the angular swing device body 51 without being restricted by the T-shaped nut 59.

[0058] Furthermore, the swing angle device body 51 is provided with a mounting hole 510 parallel to the axis of the mounting cavity 531, and a rotating shaft 511 is provided in the mounting hole 510, and the sliding seat 52 is connected to the rotating shaft 511, and a motor 513 is provided at one end of the rotating shaft 511 away from the sliding seat 52 to drive the sliding seat 52 to rotate when the sliding seat 52 is separated from the swing angle device body 51. As can be seen from the figure, when the slider 5321 pushes the sliding seat 52 under the action of external force to make the sliding seat 52 separate from the swing angle device body 51 and form a gap with the swing angle device body 51, the motor 513 drives the sliding seat 52 to rotate, which can realize the rotation of other mechanisms arranged on the sliding seat 52, cancel the external force applied to the slider 5321, and the slider 5321 is tightly fitted and locked with the swing angle device body 51 under the pressure of the elastic member 5322.

[0059] Furthermore, the plurality of locking mechanisms 53 are included, and the plurality of locking mechanisms 53 are distributed along the circumferential direction of the angle swing device body 51. The plurality of locking mechanisms 53 can further strengthen the push and pull force on the slide seat 52, thereby improving the use effect.

[0060] The processing machine tool includes a base, on which the above-mentioned hydraulic locking mechanism is provided. Specifically, the swing angle device body 51 is arranged on the base, and the slide 52 is provided with a station for clamping parts. The hydraulic locking mechanism can realize the rotation and fixation of the station for clamping parts, making the processing form more flexible.

[0061] Furthermore, as a preferred embodiment of the present invention but not limiting, a chip conveyor 7 is also provided below the workpiece clamping mechanism 2, and a bed chip discharge port 71 corresponding to the chip conveyor 7 is provided on the frame 1. The chip conveyor includes a chip conveyor belt provided below the bed chip discharge port, which is used to transport and discharge the chips generated during processing to prevent the accumulation of chips.

[0062] The working principle of this embodiment is as follows:

[0063] This embodiment provides a turning and rolling compound CNC machine tool, which uses a turret mechanism to load and unload the workpiece. After the turret mechanism places the workpiece on the workpiece clamping mechanism, the workpiece clamping mechanism drives the workpiece to rotate, the turret mechanism processes the workpiece, and the hobbing mechanism can also process the workpiece. In this way, multiple processes can be performed on the same machine tool without the need to install and disassemble the workpiece multiple times, thereby achieving the effect of improving work efficiency and processing accuracy. Combining multiple processing processes such as turning, hobbing, milling, and drilling into one machine tool can achieve one-time clamping, complete multiple process processing, improve processing accuracy, and reduce auxiliary time.

[0064] The above are implementation methods provided in combination with specific contents, and it is not intended that the specific implementation of this application is limited to these descriptions. Any method structure similar to that of this application, or any technical deduction or replacement based on the concept of this application, shall be deemed to be within the scope of protection of this application.

Claims

1. A turning and rolling composite CNC machine tool, comprising a frame (1), characterized in that: It comprises a workpiece clamping mechanism (2) disposed on the machine frame (1) and used to drive the workpiece to rotate, a turret mechanism (3) used to transport the workpiece to the workpiece clamping mechanism (2) for clamping and fixing the workpiece and processing the workpiece, and a hobbing mechanism (4) used to perform gear hobbing processing on the workpiece on the workpiece clamping mechanism (2); The hob mechanism (4) comprises a hob fixing device (41) for clamping the hob and driving the hob to rotate, and a swing angle device (5) for driving the hob fixing device (41) to turn, wherein the turning plane of the swing angle device (5) is parallel to the central axis of the workpiece clamping mechanism (2) driving the workpiece to rotate; The swing device (5) comprises a swing device body (51), and a slide seat (52) disposed on the swing device body (51) and rotatable relative to the swing device body (51); the roller cutter fixing device (41) is disposed on the slide seat (52); and a hydraulic locking mechanism (6) is disposed between the swing device body (51) and the slide seat (52) for maintaining the two in a fixed state or releasing the fixed state; The hydraulic locking mechanism (6) comprises a locking mechanism (53) arranged on the angle swing device body (51) so that the slide seat (52) is closely fitted to the angle swing device body (51) to lock or so that the slide seat (52) is separated from the angle swing device body (51) and a gap is formed with the angle swing device body (51) to unlock, the locking mechanism (53) comprising a mounting cavity (531) arranged in the angle swing device body (51) and a locking component (532) arranged in the mounting cavity (531) and moving along the mounting cavity (531) to push the slide seat (52) so that the slide seat (52) is separated from the angle swing device body (51) or to tighten the slide seat (52) so that the slide seat (52) is closely fitted to the angle swing device body (51); The locking assembly (532) comprises a slider (5321) which is arranged in the installation cavity (531) and moves in the direction of the slide seat (52) to push the slide seat (52) so that the slide seat (52) is separated from the swing angle device body (51); the slide seat (52) is connected to the slider (5321); an elastic member (5322) is sleeved on the slider (5321) and presses the slider (5321) in the direction of the installation cavity (531) so that the slide seat (52) is tightly fitted on the swing angle device body (51); the elastic member (5322) is a disc spring.

2. The turning and rolling composite CNC machine tool according to claim 1, characterized in that: The turret mechanism (3) comprises a turret body (31), a tool disc mechanism (32) disposed on the turret body (31) and used to fix a plurality of tools, a loading and unloading mechanism (33) disposed on the tool disc mechanism (32) and used to pick up and place workpieces, and a rotation mechanism (34) used to drive the tool disc mechanism (32) to rotate so that the loading and unloading mechanism (33) rotates to a loading and unloading station or rotates the tool to a corresponding processing station.

3. The turning and rolling composite CNC machine tool according to claim 2, characterized in that: The frame (1) is provided with a turret longitudinal movement mechanism (39) for driving the turret mechanism (3) to move up and down in a vertical direction, and a turret lateral movement mechanism (35) for driving the turret body (31) to move the tool laterally to approach or move away from a processing station.

4. The turning and rolling composite CNC machine tool according to claim 1, characterized in that: The workpiece clamping mechanism (2) comprises a first clamping member (21) and a second clamping member (22) which can be relatively moved closer or farther away from each other to clamp or release a workpiece located at a processing station, the first clamping member (21) comprising a first chuck (211) and a first power mechanism (212) for rotating the first chuck (211) around an axis of the first chuck (211), and the second clamping member (22) comprising a second chuck (221) and a second power mechanism (222) for moving the second chuck (221) in an axial direction of the second chuck (221).

5. The turning and rolling composite CNC machine tool according to claim 4, characterized in that: The first clamping member (21) comprises a first housing (213); the first power mechanism (212) comprises a main shaft (2121) arranged in the first housing (213); the main shaft (2121) is coaxially provided with a rotor (2122) and a stator (2123) from the inside to the outside in a radial direction; the main shaft (2121) is respectively provided with a front end bearing assembly (2124) and a rear end bearing assembly (2125) in an axial direction; the front end bearing assembly (2124) and the rear end bearing assembly (2125) are located on both sides of the rotor (2122) and the stator (2123); and the first clamp (211) is provided at one end of the main shaft (2121) close to the front end bearing assembly (2124).

6. The turning and rolling composite CNC machine tool according to claim 1, characterized in that: A hob longitudinal movement mechanism (43) for driving the hob mechanism (4) to move up and down in a vertical direction, and a hob transverse movement mechanism (44) for driving the hob mechanism (4) to move transversely to approach or move away from a processing station are provided between the hob mechanism (4) and the frame (1).

7. The turning and rolling composite CNC machine tool according to claim 1, characterized in that: It also includes a chip conveyor (7) arranged below the workpiece clamping mechanism (2), and the frame (1) is provided with a bed chip conveyor opening (71) arranged corresponding to the chip conveyor (7).

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