Machine tool

Abstract

The utility model relates to the technical field of machine tools, and provides a machine tool which comprises a machine tool body, a spindle box, a tool magazine system and a tool changing device, the spindle box is arranged on the machine tool body, the tool magazine system is arranged on one side of the machine tool body, and the tool magazine system comprises a tool magazine device, a push-out device and a tool preparing device. The tool preparation device takes down a target tool from the tool magazine device or places the tool into the tool magazine device, and the push-out device enables the tool preparation device to move between a tool preparation position and a tool changing position; the tool changing device is arranged on the spindle box and located on the side, close to the tool magazine system, of the spindle box, and the tool changing device conducts tool changing operation between the tool preparing device and the spindle box. According to the arrangement, for a double-spindle machine tool, the double spindles are located in the transverse middle position of the machine tool, the tool preparing device is moved to the tool changing position through the push-out device, tool changing operation on the two spindles can be completed at the same time, tool changing actions of the two spindles are conducted at the same time, the tool changing time is effectively shortened, and the tool changing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tools, and particularly relates to a machine tool. Background Art

[0002] With the rapid development of the manufacturing industry, the requirements for processing efficiency, precision and flexibility are increasing day by day. Some machine tools, such as numerical control machine tools, have realized automatic tool change. The automatic tool change is realized by an automatic tool change device, which includes a tool changing manipulator and a tool magazine. In the traditional technology, the tool magazine is fixedly arranged on the side of the bed body, and the tool changing manipulator is fixedly arranged on the bed body or the tool magazine, so that the tool changing manipulator is arranged adjacent to the tool magazine, and the positions of the two are relatively fixed.

[0003] For a double-spindle machine tool, two tool magazines and two tool changing manipulators are configured. The two tool magazines are located on both sides of the bed body in the transverse direction, and the two tool changing manipulators are also located on both sides of the bed body in the transverse direction. When tool change is required, the double-spindle needs to move to one side of the bed body first. After the tool changing manipulator on this side completes the tool change operation for one spindle, the double-spindle then moves to the other side of the bed body, and the tool changing manipulator on the other side completes the tool change operation for the other spindle. The double-spindle changes tools successively and needs to move back and forth transversely. For a machine tool with a large transverse stroke of the spindle, the tool change process takes a long time, the tool change efficiency is low, which is not conducive to improving the processing efficiency of the machine tool.

[0004] Therefore, how to solve the problem of low tool change efficiency of the double-spindle machine tool in the prior art has become an important technical problem to be solved by those skilled in the art. Summary of the Utility Model

[0005] The utility model provides a machine tool to solve the defect of low tool change efficiency of the double-spindle machine tool in the prior art.

[0006] The utility model provides a machine tool, including:

[0007] A bed body;

[0008] A spindle box, arranged on the bed body;

[0009] A tool magazine system, arranged on one side of the bed body. The tool magazine system includes a tool magazine device, a pushing device and a tool preparation device. The tool magazine device stores tools. The tool preparation device is adapted to take a target tool from the tool magazine device or place a tool into the tool magazine device. The pushing device is adapted to displace the tool preparation device between a tool preparation position and a tool change position;

[0010] A tool change device, arranged on the spindle box, and the tool change device is located on the side of the spindle box close to the tool magazine system. The tool change device is adapted to perform a tool change operation between the tool preparation device and the spindle box.

[0011] A machine tool provided by the present utility model, wherein there are two spindle boxes, and the two spindle boxes are distributed transversely along the bed;

[0012] There are two tool magazine systems, and the two tool magazine systems are respectively arranged on both sides of the transverse direction of the bed;

[0013] There are two tool changing devices, and the two tool changing devices are connected to the two spindle boxes in a one-to-one correspondence, and the two tool changing devices are respectively located on the sides away from each other of the two spindle boxes.

[0014] A machine tool provided by the present utility model, wherein the pushing device includes:

[0015] A sliding plate, which is slidably connected to the tool magazine device, and the tool preparation device is arranged at one end of the sliding plate close to the spindle box;

[0016] A first driving member, adapted to drive the sliding plate to reciprocate relative to the tool magazine device.

[0017] A machine tool provided by the present utility model, wherein the tool preparation device is slidably connected to the sliding plate, and the sliding direction of the tool preparation device relative to the sliding plate is the same as the sliding direction of the sliding plate relative to the tool magazine device;

[0018] The pushing device further includes:

[0019] A second driving member, adapted to drive the tool preparation device to slide relative to the sliding plate.

[0020] A machine tool provided by the present utility model further includes:

[0021] A first protective plate, which is arranged on the side of the tool magazine device close to the spindle box. The first protective plate includes a fixed part, a sliding part and a third driving member. The fixed part is fixedly arranged on the tool magazine device or the bed, and the fixed part is provided with an avoidance hole for the pushing device and the tool preparation device to pass through. The sliding part is slidably connected to the fixed part to control the opening and closing of the avoidance hole, and the third driving member is adapted to drive the sliding part to slide relative to the fixed part.

[0022] A machine tool provided by the present utility model further includes:

[0023] An air knife device, which is arranged on the fixed part, and the air knife device is adapted to blow air along a direction perpendicular to the axis of the avoidance hole to form an air curtain at the avoidance hole.

[0024] A machine tool provided by the present utility model, wherein the first protective plate further includes:

[0025] A guiding mechanism is disposed between the sliding part and the fixed part, and the guiding mechanism is adapted to guide the sliding of the sliding part.

[0026] According to a machine tool provided by the present invention, the bed body includes a base part and a cross beam part, the spindle box is disposed on the cross beam part so as to be reciprocally slidable in the transverse direction, and the machine tool further includes:

[0027] A workbench is disposed on the base part so as to be reciprocally slidable in the longitudinal direction;

[0028] A pair of second protective plates are disposed on the base part, and the two of the pair of second protective plates are respectively located on the two lateral sides of the workbench in the transverse direction, and the second protective plates are connected to the first protective plates.

[0029] According to a machine tool provided by the present invention, the second protective plate includes:

[0030] A first protective plate and a second protective plate are respectively located on the two longitudinal sides of the workbench, a first end of the first protective plate is fixedly connected to the base part, a first end of the second protective plate is connected to the base part or the cross beam part, a second end of the first protective plate and a second end of the second protective plate are both connected to the workbench, and both the first protective plate and the second protective plate can telescopically extend and retract in the longitudinal direction.

[0031] According to a machine tool provided by the present invention, both the first protective plate and the second protective plate are armor protective covers.

[0032] The machine tool provided by the present invention includes a bed body, a spindle box, a tool magazine system and a tool changing device. The spindle box is disposed on the bed body, and the tool magazine system is disposed on one side of the bed body. The tool magazine system includes a tool magazine device, a pushing device and a tool preparation device. The tool magazine device stores tools. The tool preparation device is used to take a target tool from the tool magazine device or place a tool into the tool magazine device. The pushing device is used to displace the tool preparation device between a tool preparation position and a tool changing position. The tool changing device is disposed on the spindle box, and the tool changing device is located on the side of the spindle box close to the tool magazine system. The tool changing device is used to perform a tool changing operation between the tool preparation device and the spindle box. With such a setting, the tool changing device is disposed on the spindle box, so that the tool changing device and the spindle box are displaced synchronously, and interference of the tool changing device with the displacement process of the spindle box can be avoided. For a double-spindle machine tool, during tool changing, the two spindles can be located at the middle position in the transverse direction of the machine tool. The pushing devices of the two tool magazine systems are used to simultaneously displace the two tool preparation devices to the tool changing position, and the tool changing devices on the two spindle boxes can simultaneously complete the tool changing operations for the two spindles, effectively avoiding the process that the spindle box of the double-spindle machine tool first displaces to one side of the tool magazine system and then displaces to the tool magazine system on the other side, and the tool changing actions of the two spindles are performed simultaneously, effectively shortening the tool changing time and improving the tool changing efficiency, and solving the problem of low tool changing efficiency of the double-spindle machine tool in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0034] Figure 1 It is a schematic structural diagram of the machine tool provided by the present utility model when only one spindle box is provided (only the second protective plate located on one side of the bed body is shown).

[0035] Figure 2 It is a schematic structural diagram of the machine tool provided by the present utility model when two spindle boxes are provided.

[0036] Figure 3 It is a partial schematic structural diagram of the tool magazine system provided by the present utility model.

[0037] Figure 4 It is a schematic structural diagram of the first protective plate provided by the present utility model.

[0038] REFERENCE NUMERALS:

[0039] 1, spindle box; 2, tool magazine device; 3, pushing device; 4, tool preparation device; 5, tool changing device; 6, sliding plate; 7, first protective plate; 8, fixing part; 9, sliding part; 10, third driving member; 11, avoidance hole; 12, air knife device; 13, guide rail; 14, seat body part; 15, cross beam part; 16, workbench; 17, first guard plate; 18, second guard plate; 19, transverse driving device; 20, chip leakage port; 21, driving mechanism. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the following will clearly and completely describe the technical solutions in the present utility model in conjunction with the drawings in the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments in the present utility model belong to the scope of protection of the present utility model.

[0041] The following will describe the machine tool of the present utility model in conjunction with Figures 1 to 4 as shown in the drawings.

[0042] As Figures 1 to 4 shown, the machine tool provided by the embodiment of the present utility model includes a bed body, a spindle box 1, a tool magazine system and a tool changing device 5.

[0043] Specifically, the headstock 1 is arranged on the bed body, and the tool magazine system is arranged on one side of the bed body.

[0044] The tool magazine system includes a tool magazine device 2, a pushing device 3 and a tool preparation device 4. The tool magazine device 2 stores tools. The tool preparation device 4 is used to take the target tool from the tool magazine device 2 or place the tool into the tool magazine device 2. The pushing device 3 is used to displace the tool preparation device 4 between the tool preparation position and the tool change position.

[0045] The tool change device 5 is arranged on the headstock 1, and the tool change device 5 is located on the side of the headstock 1 close to the tool magazine system. The tool change device 5 is used to perform tool change operations between the tool preparation device 4 and the headstock 1.

[0046] With such a setting, the tool change device 5 is arranged on the headstock 1, so that the tool change device 5 and the headstock 1 are displaced synchronously, which can avoid the interference of the tool change device 5 on the displacement process of the headstock 1. For a double-spindle machine tool, during tool change, the two spindles can be located at the middle position in the transverse direction of the machine tool. The pushing devices 3 of the two tool magazine systems are used to displace the two tool preparation devices 4 to the tool change position simultaneously. The tool change devices 5 on the two headstocks 1 can simultaneously complete the tool change operations for the two spindles, effectively avoiding the process that the headstock 1 of the double-spindle machine tool first displaces to one side of the tool magazine system and then to the tool magazine system on the other side, and the tool replacement actions of the two spindles are carried out simultaneously, effectively shortening the tool change time and improving the tool change efficiency, and solving the problem of low tool change efficiency of the double-spindle machine tool in the prior art.

[0047] It should be noted that the structure and layout form of the tool change device 5 and the tool magazine system provided by the embodiments of the present invention are not only applicable to double-spindle machine tools, referring to Figure 1 but also applicable to single-spindle machine tools, referring to Figure 2 .

[0048] For a double-spindle machine tool, there are two headstocks 1, and the two headstocks 1 are distributed along the transverse direction of the bed body.

[0049] For the convenience of description, the distribution direction of the headstock 1 is taken as the transverse direction, referring to the direction indicated by x in Figure 1 and Figure 2 ; the longitudinal direction is arranged along the horizontal direction and is perpendicular to the transverse direction. The longitudinal direction refers to the direction indicated by y in Figure 1 and Figure 2 ; the vertical direction is perpendicular to the longitudinal direction and the transverse direction, and the vertical direction is consistent with the height direction of the machine tool, referring to the direction indicated by z in Figure 1 and Figure 2 .

[0050] There are two tool magazine systems, and the two tool magazine systems are respectively arranged on both sides of the transverse direction of the bed body.

[0051] There are two tool changing devices 5, and the two tool changing devices 5 are connected to the two main spindle boxes 1 in a one-to-one correspondence. The two tool changing devices 5 are respectively located on the sides away from each other of the two main spindle boxes 1. That is to say, each tool changing device 5 is located between the corresponding tool magazine system and the main spindle box 1.

[0052] In the embodiment of the present utility model, through the adjustment of the position of the tool preparation device 4 by the pushing device 3, during tool changing, the distance between the tool preparation device 4 and the main spindle box 1 is reduced, which is beneficial to reducing the size of the tool changing device 5 and reducing the occupation of the space around the main spindle box 1.

[0053] The pushing device 3 includes a sliding plate 6 and a first driving member. The sliding plate 6 is slidably connected to the tool magazine device 2. The sliding direction of the sliding plate 6 relative to the tool magazine device 2 is set horizontally. The first driving member is used to drive the sliding plate 6 to slide reciprocally relative to the tool magazine device 2.

[0054] The tool preparation device 4 is arranged at one end of the sliding plate 6 close to the main spindle box 1. By sliding the sliding plate 6, the tool preparation device 4 can be displaced between the tool preparation position and the tool changing position to approach or move away from the main spindle box 1.

[0055] The first driving member can but is not limited to be selected from a cylinder, a hydraulic cylinder, an electric cylinder, a lead screw nut transmission mechanism driven by a motor, or a rack and pinion transmission mechanism driven by a motor.

[0056] In a further embodiment, the tool preparation device 4 is slidably connected to the sliding plate 6, and the sliding direction of the tool preparation device 4 relative to the sliding plate 6 is the same as the sliding direction of the sliding plate 6 relative to the tool magazine device 2. At this time, the pushing device 3 further includes a second driving member, and the second driving member is used to drive the tool preparation device 4 to slide relative to the sliding plate 6.

[0057] With such a setting, both the sliding of the tool preparation device 4 relative to the sliding plate 6 and the sliding of the sliding plate 6 relative to the tool magazine device 2 can make the tool preparation device 4 approach or move away from the main spindle box 1. When the pushing device 3 displaces the tool preparation device 4 between the tool preparation position and the tool changing position, the first driving member and the second driving member can be used to run synchronously. While the sliding plate 6 slides relative to the tool magazine device 2, the tool preparation device 4 also slides relative to the sliding plate 6, realizing the two-stage telescoping of the pushing device 3, which is beneficial to improving the displacement efficiency of the tool preparation device 4 between the tool preparation position and the tool changing position and improving the tool changing efficiency of the machine tool.

[0058] The second driving member can but is not limited to be selected from a cylinder, a hydraulic cylinder, an electric cylinder, a lead screw nut transmission mechanism driven by a motor, or a rack and pinion transmission mechanism driven by a motor.

[0059] In the embodiment of the present utility model, the machine tool further includes a first protective plate 7, which is arranged on one side of the tool magazine device 2 close to the spindle box 1. The first protective plate 7 is used to isolate the tool magazine device 2 from the machining area of the spindle box 1, so as to avoid the influence of chips, cutting fluid, etc. generated during the machining of the workpiece by the spindle box 1 on the tool magazine device 2.

[0060] When the tool preparation device 4 is in the tool preparation position, both the tool preparation device 4 and the pushing device 3 are located on the side of the first protective plate 7 away from the spindle box 1. When the tool preparation device 4 is in the tool change position, it is necessary to make the tool preparation device 4 located on the side of the first protective plate 7 close to the spindle box 1.

[0061] In this embodiment, the first protective plate 7 includes a fixed part 8, a sliding part 9 and a third driving part 10.

[0062] The fixed part 8 is fixedly arranged on the tool magazine device 2 or the bed body. The fixed part 8 is provided with an avoidance hole 11 for the pushing device 3 and the tool preparation device 4 to pass through, so that the tool preparation device 4 can displace between the tool preparation position and the tool change position.

[0063] The sliding part 9 is slidably connected with the fixed part 8, and the third driving part 10 is used to drive the sliding part 9 to slide relative to the fixed part 8. When the sliding part 9 slides to the first position, the avoidance hole 11 is opened, and the pushing device 3 and the tool preparation device 4 can pass through it. When the sliding part 9 slides to the second position, the sliding part 9 closes the avoidance hole 11, which can protect the tool magazine device 2 and the tool preparation device 4 and prevent chips and cutting fluid from entering the tool magazine system.

[0064] In a further embodiment, the machine tool further includes an air knife device 12, which is arranged on the fixed part 8. The air knife device 12 can blow air in a direction perpendicular to the axis of the avoidance hole 11 to form an air curtain at the avoidance hole 11, and rely on the high-pressure air flow to prevent chips and other sundries and water vapor from entering the tool magazine system.

[0065] When it is necessary to displace the tool preparation device 4 to the tool change position, the third driving part 10 is used to make the sliding part 9 slide to the first position, and at the same time, the air knife device 12 is controlled to start running. At this time, it can not only ensure that the pushing device 3 and the tool preparation device 4 pass through the first protective plate 7, but also effectively prevent chips from entering the tool magazine system.

[0066] The third driving part 10 can be, but is not limited to, a cylinder, a hydraulic cylinder, an electric cylinder, a lead screw nut transmission mechanism driven by a motor or a gear rack transmission mechanism driven by a motor.

[0067] In this embodiment, the first protective plate 7 further includes a guiding structure, which is arranged between the sliding part 9 and the fixed part 8. The guiding mechanism is used to guide the sliding of the sliding part 9, and can improve the stability of the sliding process of the sliding part 9.

[0068] Specifically, the guiding structure includes a pair of guide rails 13, the axes of the guide rails 13 being parallel to the axis of the sliding part 9 relative to the fixed part 8. The pair of guide rails 13 are arranged in parallel and distributed at both ends of the sliding part 9 in a direction perpendicular to the axes of the guide rails 13.

[0069] In an embodiment of the present utility model, the bed body includes a seat body part 14 and a crossbeam part 15. The crossbeam part 15 is fixedly arranged on the seat body part 14. The crossbeam part 15 includes a crossbeam and a pair of columns. The columns are arranged vertically, the crossbeam is arranged horizontally, the pair of columns are spaced apart horizontally, the lower ends of the columns are fixedly connected to the seat body part 14, and the upper ends of the columns are fixedly connected to the ends of the crossbeam. The crossbeam part 15 has a gantry structure.

[0070] A set of tool magazine systems is correspondingly arranged on each column.

[0071] The spindle box 1 is arranged on the crossbeam of the crossbeam part 15, and the spindle box 1 is slidably connected to the crossbeam. The sliding direction of the spindle box 1 relative to the crossbeam is horizontal. The machine tool further includes a transverse driving device 19 for driving the spindle box 1 to reciprocally slide relative to the crossbeam.

[0072] The machine tool further includes a workbench 16, a longitudinal driving device and a pair of second protective plates.

[0073] The workbench 16 is arranged on the seat body part 14, the workbench 16 is slidably connected to the seat body part 14, and the sliding direction of the workbench 16 relative to the seat body part 14 is longitudinal. The longitudinal driving device is used for driving the workbench 16 to reciprocally slide relative to the seat body part 14.

[0074] The pair of second protective plates are both arranged on the seat body part 14. The two of the pair of second protective plates are respectively located on the two lateral sides of the workbench 16 in the transverse direction. The second protective plates are connected to the first protective plate 7. The second protective plates can block the chips generated during the workpiece machining process and prevent the chips from splashing outside the bed body.

[0075] It should be noted that a chip leakage port 20 is provided on the seat body part 14. The chip leakage port 20 extends longitudinally from one end to the other end of the seat body part 14. A chip conveyor is arranged below the chip leakage port 20, and the chip conveyor can be used to convey the chips at the chip leakage port 20 away. The workbench 16 straddles the seat body part 14. The longitudinal driving device includes a pair of driving mechanisms 21. The pair of driving mechanisms 21 are distributed horizontally at the two lateral ends of the seat body part 14 in the transverse direction. The pair of driving mechanisms 21 are located on the two lateral sides of the chip leakage port 20 in the transverse direction. The pair of driving mechanisms 21 respectively act on the two lateral ends of the workbench 16. During the machining process of the workpiece by the machine tool, the generated chips can smoothly enter the chip leakage port 20.

[0076] The lower ends of the above-mentioned second protective plates can extend to the edge of the chip leakage port 20. While blocking the chip splashing, the second protective plates can enable the blocked chips to smoothly slide into the chip leakage port 20.

[0077] The second protective plate is connected to the first protective plate 7, which can prevent a gap from being generated between the lower end of the first protective plate 7 and the upper end of the second protective plate, ensuring effective blocking of the chips.

[0078] In this embodiment, the second protective plate includes a first guard plate 17 and a second guard plate 18. The first guard plate 17 and the second guard plate 18 are both arranged on the seat body part 14. The first guard plate 17 and the second guard plate 18 are respectively located on both longitudinal sides of the workbench 16. The first end of the first guard plate 17 is fixedly connected to the seat body part 14, and the first end of the second guard plate 18 is fixedly connected to the seat body part 14 or the column of the crossbeam part 15. The second ends of the first guard plate 17 and the second guard plate 18 are both connected to the workbench 16, and both the first guard plate 17 and the second guard plate 18 can telescopically move longitudinally.

[0079] That is to say, the first ends of the first guard plate 17 and the second guard plate 18 are both relatively fixed to the bed body, and the second ends of the first guard plate 17 and the second guard plate 18 are both relatively fixed to the workbench 16. When the workbench 16 slides longitudinally, it drives the second ends of the first guard plate 17 and the second guard plate 18 to displace longitudinally, and the positions of the first ends of the first guard plate 17 and the second guard plate 18 on the seat body part 14 remain fixed, thereby realizing the telescopic movement of the first guard plate 17 and the second guard plate 18.

[0080] With such a setting, when the workbench 16 slides to any longitudinal position, the second protective plate can provide effective protection, and the protection effect is comprehensive.

[0081] It should be noted that the second end of the first guard plate 17 fits the surface of the workbench 16 to prevent a gap from being formed between the second end of the first guard plate 17 and the workbench 16, thereby preventing chips from splashing out from this gap. Similarly, the second end of the second guard plate 18 fits the surface of the workbench 16 to prevent a gap from being formed between the second end of the second guard plate 18 and the workbench 16, thereby preventing chips from splashing out from this gap.

[0082] An armor protective cover can be selected as the first guard plate 17 and the second guard plate 18.

[0083] In summary, the machine tool provided by the embodiment of the present invention shortens the tool change time and improves the tool change efficiency. At the same time, it improves the protection performance of the tool magazine system, and within a certain lateral travel range of the spindle box 1, it increases the machining space of the machine tool.

[0084] On the other hand, the present invention also provides a tool change method for a machine tool based on the machine tool provided in any of the above embodiments. The tool change method of the machine tool described below can be mutually referred to the machine tool described above.

[0085] The tool changing method of the machine tool provided by the embodiment of the present utility model includes steps 110 to 160.

[0086] Step 110: Before tool changing, the tool preparation devices of the two tool magazine systems have removed the target tool from the tool magazine device.

[0087] Before tool changing, make the tool preparation devices 4 of the two tool magazine systems remove the target tool, and the tool preparation devices 4 are in the tool preparation position, waiting for tool changing. Removing the target tool before tool changing avoids the tool taking action during the tool changing process, which is beneficial to shortening the tool changing time.

[0088] Step 120: Control the spindle on the spindle box to stop rotating and move vertically to the target position, and at the same time control the pushing devices of the two tool magazine systems to displace the tool preparation devices to the tool changing position.

[0089] It can be understood that when tool changing is required, first make the spindle of the spindle box 1 stop rotating to stop the machining work, and then adjust the position of the spindle of the spindle box 1 vertically to the target position so that the height of the tool on the spindle of the spindle box 1 is the same as the height of the target tool on the tool preparation device 4.

[0090] While adjusting the position of the spindle box 1, control the pushing devices 3 of the two tool magazine systems to operate, so that the tool preparation devices 4 of the two tool magazine systems are displaced to the tool changing position.

[0091] That is to say, the tool changing preparation actions of the spindle box 1 and the tool magazine system are carried out simultaneously, which is beneficial to shortening the tool changing time.

[0092] Step 130: Control the spindle box to move to the middle position in the transverse direction of the bed body, and at the same time the two tool changing devices gradually switch to the tool changing state. When the spindle box moves to the middle position in the transverse direction of the bed body, the two tool changing devices just complete the tool clamping action on the tool on the spindle box and the target tool on the tool preparation device.

[0093] When changing tools, it is necessary to make the spindle box 1 located at the middle position in the transverse direction of the bed body, especially for a machine tool with two spindles. While moving the spindle box 1 to the middle position in the transverse direction of the bed body, make the tool changing device 5 gradually switch to the tool changing state. When the tool changing device 5 switches to the tool changing state, the tool changing device 5 just completes the tool clamping work on the tool on the spindle box 1 and the target tool on the tool preparation device 4.

[0094] That is to say, the tool changing preparation actions of the tool changing device 5 and the spindle box 1 are carried out synchronously, which is beneficial to shortening the tool changing time.

[0095] Step 140: Control the two tool changing devices to perform tool changing operations.

[0096] Step 150: Control the spindle headstock to move towards the machining area, and at the same time, control the two pushing devices to displace the tool preparation device to the tool preparation position.

[0097] After the tool change operation is completed, the spindle headstock 1 can move towards the machining area for the next machining step. At the same time, the tool preparation devices 4 of the two tool magazine systems switch to the tool preparation position. The process of the tool preparation device 4 switching to the tool preparation position does not affect the operation of the spindle headstock 1 and will not delay the next machining step of the spindle headstock 1, which is beneficial to improving the machining efficiency of the machine tool.

[0098] Step 160: Control the two tool preparation devices to pick up the next target tool from the tool magazine device.

[0099] After the tool preparation devices 4 of the two tool magazine systems complete the tool change and are displaced to the tool preparation position, the next target tool is picked up from the tool preparation device 4 to prepare for the next tool change process and wait for the next tool change process.

[0100] With such a setting, based on the structure and layout form of the tool change device 5 and the tool magazine system of the machine tool provided in the above embodiment, the tool change method of the machine tool provided in this embodiment makes the tool change process more compact and efficient, can effectively improve the tool change efficiency, and effectively improve the machining efficiency of the machine tool.

[0101] The derivation process of the beneficial effects of the tool change method of the machine tool in the embodiment of the present invention is generally similar to the derivation process of the beneficial effects of the above machine tool, so it will not be elaborated here.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A machine tool, characterized in that: include: Bed; A spindle box (1) is arranged on the bed; A tool magazine system is arranged on one side of the bed, the tool magazine system comprising a tool magazine device (2), an ejection device (3) and a tool preparation device (4), the tool magazine device (2) storing tools, the tool preparation device (4) being suitable for removing target tools from the tool magazine device (2) or placing tools into the tool magazine device (2), and the ejection device (3) being suitable for causing the tool preparation device (4) to move between a tool preparation position and a tool change position; A tool changing device (5) is arranged on the spindle box (1), and the tool changing device (5) is located on a side of the spindle box (1) close to the tool magazine system, and the tool changing device (5) is suitable for performing a tool changing operation between the tool preparation device (4) and the spindle box (1).

2. The machine tool according to claim 1, characterized in that: Two spindle boxes (1) are provided, and the two spindle boxes (1) are distributed in the transverse direction of the bed; The tool magazine systems are provided with two, and the two tool magazine systems are respectively arranged on both sides of the bed in the horizontal direction; Two tool changing devices (5) are provided, and the two tool changing devices (5) are connected to the two spindle boxes (1) in a one-to-one correspondence. The two tool changing devices (5) are respectively located on the side away from the two spindle boxes (1).

3. The machine tool according to claim 1, characterized in that: The ejection device (3) comprises: A sliding plate (6) is slidably connected to the tool magazine device (2), and the tool preparation device (4) is arranged at one end of the sliding plate (6) close to the spindle box (1); The first driving member is suitable for driving the sliding plate (6) to slide back and forth relative to the tool magazine device (2).

4. The machine tool according to claim 3, characterized in that: The tool preparation device (4) is slidably connected to the sliding plate (6), and a sliding direction of the tool preparation device (4) relative to the sliding plate (6) is consistent with a sliding direction of the sliding plate (6) relative to the tool magazine device (2); The ejection device (3) further comprises: The second driving member is suitable for driving the knife preparation device (4) to slide relative to the sliding plate (6).

5. The machine tool according to claim 1, characterized in that: Also includes: The first protective plate (7) is arranged on a side of the tool magazine device (2) close to the spindle box (1), and the first protective plate (7) includes a fixed portion (8), a sliding portion (9) and a third driving member (10). The fixed portion (8) is fixedly arranged on the tool magazine device (2) or the bed, and the fixed portion (8) is provided with an avoidance hole (11) for the ejection device (3) and the tool preparation device (4) to pass through. The sliding portion (9) is slidably connected to the fixed portion (8) to control the opening and closing of the avoidance hole (11), and the third driving member (10) is suitable for driving the sliding portion (9) to slide relative to the fixed portion (8).

6. The machine tool according to claim 5, characterized in that: Also includes: A wind knife device (12) is arranged on the fixing portion (8), and the wind knife device (12) is suitable for blowing air in a direction perpendicular to the axis of the avoidance hole (11) to form an air curtain at the avoidance hole (11).

7. The machine tool according to claim 5, characterized in that: The first protective plate (7) further comprises: A guide mechanism is arranged between the sliding portion (9) and the fixing portion (8), and the guide mechanism is suitable for guiding the sliding portion (9).

8. The machine tool according to claim 5, characterized in that: The bed comprises a seat body portion (14) and a crossbeam portion (15); the spindle box (1) is arranged on the crossbeam portion (15) in a manner that allows for reciprocating sliding in a transverse direction; and the machine tool further comprises: A workbench (16) is disposed on the seat body (14) so ​​as to be reciprocatingly slidable in the longitudinal direction; A pair of second protective plates are arranged on the seat body (14), two of the second protective plates are respectively located on two lateral sides of the workbench (16), and the second protective plates are connected to the first protective plates (7).

9. The machine tool according to claim 8, characterized in that The second protective plate comprises: The first guard plate (17) and the second guard plate (18) are respectively located on both sides of the workbench (16) in the longitudinal direction; the first end of the first guard plate (17) is fixedly connected to the base portion (14); the first end of the second guard plate (18) is connected to the base portion (14) or the crossbeam portion (15); the second end of the first guard plate (17) and the second end of the second guard plate (18) are both connected to the workbench (16); and the first guard plate (17) and the second guard plate (18) are both capable of extending and retracting in the longitudinal direction.

10. The machine tool according to claim 9, characterized in that The first guard plate (17) and the second guard plate (18) are both armor protection covers.

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