Deep hole processing machine tool and control method thereof

Abstract

The invention discloses a deep hole machining machine tool and a control method thereof, and belongs to the technical field of machine tools, a clamp clamps a workpiece to enable the workpiece to be located between a cutter and a supporting rod, when a first main shaft drives the cutter to machine the inner wall of a through hole of the workpiece, the actual vibration amount of the cutter is measured through a vibration sensor, and when the actual vibration amount is larger than the preset vibration amount, the vibration sensor is started; controlling a feeding mechanism to move a clamp to separate the workpiece from the cutter, enabling the rotating speed of a second main shaft to be equal to that of a first main shaft, then driving the second main shaft to move forwards by a moving mechanism, enabling a supporting rod to abut against the rear end of the cutter, connecting the front end of the cutter with the first main shaft, and enabling the rear end of the cutter to abut against the front end of the supporting rod; and the feeding mechanism drives the clamp to move, so that the tool cuts the inner wall of the through hole of the workpiece, the vibration amplitude of the tool in the machining process is reduced, and the machining precision of the through hole of the workpiece is improved.

Description

Technical Field

[0001] This invention relates to the field of machine tool technology, and in particular to a deep hole machining machine tool and its control method. Background Technology

[0002] In existing technologies, horizontal lathes are generally used to machine deep hole structures of shafts. Horizontal lathes are equipped with long cutting tools to facilitate cutting deep holes. However, the long cutting tools have a cantilever structure and low rigidity. If the cutting tool is used to machine workpieces with high hardness, it is prone to significant vibration during the machining process, resulting in low machining accuracy of the deep holes. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a deep hole machining tool and its control method.

[0004] According to a first aspect of the present invention, a deep hole machining machine tool is used to machine workpieces with pre-drilled through holes, the deep hole machining machine tool comprising: First main axis; A cutting tool is mounted on the first spindle and is used to cut the inner wall of the through hole; A vibration sensor is installed on the first spindle, and the vibration sensor measures the actual vibration of the cutting tool. The moving mechanism is located behind the first main shaft; The second main shaft is connected to the moving mechanism, and the moving mechanism drives the second main shaft to move in the front-back direction; A support rod is provided on the second spindle, and the rotation axis of the second spindle driving the support rod coincides with the rotation axis of the first spindle driving the tool. Feed mechanism; A clamp is provided on the feed mechanism. The clamp is located between the first spindle and the second spindle. The feed mechanism drives the clamp to move relative to the cutting tool. The clamp is used to hold the workpiece.

[0005] The deep hole machining tool according to embodiments of the present invention has at least the following beneficial effects: the fixture holds the workpiece between the cutting tool and the support rod. When the first spindle drives the cutting tool to machine the inner wall of the through hole of the workpiece, the actual vibration of the cutting tool is measured by a vibration sensor. When the actual vibration is greater than the preset vibration, it is confirmed that the cutting tool is vibrating significantly. The feed mechanism is controlled to move the fixture to separate the workpiece from the cutting tool, and the rotational speed of the second spindle is made equal to that of the first spindle. Then, the moving mechanism drives the second spindle to move forward, so that the support rod abuts against the rear end of the cutting tool. The front end of the cutting tool is connected to the first spindle, and the rear end of the cutting tool abuts against the front end of the support rod, thus ensuring that both ends of the cutting tool are supported by external force. The feed mechanism then drives the fixture to move so that the cutting tool cuts the inner wall of the through hole of the workpiece, which helps to reduce the vibration amplitude during the cutting process and improve the machining accuracy of the through hole of the workpiece.

[0006] According to some embodiments of the present invention, the cutting tool includes: A tool holder is connected to the first spindle, and the outer diameter of the support rod is not greater than the outer diameter of the tool holder. The cutting head is located on the outer wall of the cutting shank.

[0007] According to some embodiments of the present invention, the length of the support rod in the front-rear direction is less than the length of the cutter in the front-rear direction.

[0008] According to some embodiments of the present invention, the rear end face of the cutting tool is provided with a cone, and the front end face of the support rod is provided with a conical hole, the shape of the conical hole matching the shape of the cone.

[0009] According to some embodiments of the present invention, the deep hole machining tool further includes: A rotating mechanism connects the feeding mechanism and the clamp. The feeding mechanism drives the rotating mechanism to move, and the rotating mechanism drives the clamp to rotate around a vertical axis.

[0010] According to some embodiments of the present invention, the deep hole machining tool further includes a third spindle, the third spindle connecting the moving mechanism and the fixture, the third spindle driving the rotation axis of the fixture to be parallel to the rotation axis of the cutting tool.

[0011] According to a second aspect of the present invention, a deep hole machining machine tool control method is applied to a deep hole machining machine tool as described in the above embodiments, the control method comprising: The first spindle is controlled to drive the tool to cut the inner wall of the through hole, and the vibration sensor is controlled to acquire the actual vibration amount and compare the actual vibration amount with the preset vibration amount. When the actual vibration amount is greater than the preset vibration amount, after recording the machining position of the tool, the feed mechanism is controlled to move the fixture so that the tool retracts from the inner wall of the through hole; The second spindle is controlled to drive the support rod to rotate, so that the rotational speed of the support rod is equal to the rotational speed of the tool; The moving mechanism is controlled to drive the second spindle forward so that the support rod abuts against the rear end of the tool; The feed mechanism is controlled to move the fixture so that the cutting tool feeds into the inner wall of the through hole and returns to the machining position.

[0012] The deep hole machining machine tool control method according to embodiments of the present invention has at least the following beneficial effects: the fixture clamps the workpiece so that the workpiece is positioned between the cutting tool and the support rod. When the first spindle drives the cutting tool to machine the inner wall of the through hole of the workpiece, the actual vibration of the cutting tool is measured by a vibration sensor. When the actual vibration is greater than the preset vibration, it indicates that the cutting tool is vibrating significantly. The feed mechanism is then controlled to move the fixture to separate the workpiece from the cutting tool. The rotational speed of the second spindle is set to be equal to that of the first spindle. Subsequently, the moving mechanism drives the second spindle to move forward so that the support rod abuts against the rear end of the cutting tool. The front end of the cutting tool is connected to the first spindle, and the rear end of the cutting tool abuts against the front end of the support rod, thus ensuring that both ends of the cutting tool are supported by external force. The feed mechanism then drives the fixture to move so that the cutting tool cuts the inner wall of the through hole of the workpiece. This helps to reduce the vibration amplitude during the cutting process and improve the machining accuracy of the through hole of the workpiece.

[0013] According to some embodiments of the present invention, the control method further includes: Comparing the actual vibration amount with the ultimate vibration amount, the ultimate vibration amount is greater than the preset vibration amount; When the actual vibration amount is greater than or equal to the limit vibration amount, the feed mechanism is controlled to move the fixture so that the tool is retracted from the inner wall of the through hole; After controlling the moving mechanism to move the second spindle backward so that the support rod is away from the tool, and controlling the feeding mechanism to move the clamp backward so that the workpiece is away from the tool, the first spindle is controlled to stop the tool.

[0014] According to some embodiments of the present invention, controlling the feed mechanism to move the fixture to retract the tool from the inner wall of the through hole includes: The feed mechanism is controlled to drive the fixture to move radially along the tool, so that the axis of the through hole coincides with the rotation axis of the tool.

[0015] According to some embodiments of the present invention, controlling the vibration sensor to acquire the actual vibration amount includes: Obtain the vibration variation curve of the vibration displacement of the tool moving radially as a function of time, and obtain the amplitude based on the vibration variation curve; The actual vibration amount is obtained based on the amplitude. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a deep hole machining machine tool according to an embodiment of the present invention; Figure 2 yes Figure 1 Enlarged diagram of A in the middle; Figure 3 This is a flowchart of a deep hole machining machine tool control method according to an embodiment of the present invention.

[0017] Reference numerals: First spindle 100, cutting tool 200, tool holder 210, cutting head 220, cone 230, moving mechanism 300, second spindle 400, support rod 500, conical hole 510, feed mechanism 600, fixture 700, rotating mechanism 800, third spindle 900. Detailed Implementation

[0018] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] In the description of this invention, it should be understood that the terms front, back, up, down, axial, circumferential, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0020] In the description of this invention, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0021] In the description of this invention, it should be noted that terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0022] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are some embodiments of the present invention, not all embodiments.

[0023] Reference Figures 1 to 2 As shown, the present invention provides a deep hole machining machine tool.

[0024] The deep hole machining tool includes a base, a first spindle 100, a cutting tool 200, a vibration sensor (not shown in the figure), a moving mechanism 300, a second spindle 400, a support rod 500, a feed mechanism 600, a fixture 700, a rotating mechanism 800, and a third spindle 900.

[0025] The first spindle 100 is mounted on the base and is connected to the tool 200. The first spindle 100 drives the tool 200 to rotate around an axis extending in the front-rear direction. The tool 200 includes a tool holder 210 and a tool head 220. The front end of the tool holder 210 is connected to the first spindle 100. The tool head 220 is provided on the outer side wall of the tool holder 210 and protrudes outward from the tool holder 210. The rear end face of the tool holder 210 is provided with a rearward protruding cone 230. The diameter of the cone 230 gradually decreases from front to back, and the axis of the cone 230 coincides with the rotation axis of the tool 200.

[0026] A vibration sensor is installed inside the first spindle 100, and the vibration sensor abuts against the tool holder 210 of the tool 200. The vibration sensor measures the actual vibration of the tool holder 210.

[0027] The moving mechanism 300 is mounted on the base and located behind the first spindle 100. The moving mechanism 300 is connected to the second spindle 400 and drives the second spindle 400 to move in the front-back direction. The second spindle 400 is connected to the rear end of the support rod 500 and drives the support rod 500 to rotate around an axis extending in the front-back direction. The rotation axis of the tool 200 coincides with the rotation axis of the support rod 500. The outer diameter of the support rod 500 is smaller than the outer diameter of the tool holder 210, and the length of the support rod 500 in the front-back direction is smaller than the length of the tool holder 210 in the front-back direction. The front end of the support rod 500 is provided with a conical hole 510 that is larger at the front and smaller at the back. The diameter of the conical hole 510 gradually decreases from front to back, and the axis of the conical hole 510 coincides with the rotation axis of the support rod 500.

[0028] The feed mechanism 600 is mounted on the base and includes an X-axis moving mechanism, a Y-axis moving mechanism, and a Z-axis moving mechanism. The X-axis moving mechanism moves in the front-back direction, the Y-axis moving mechanism moves in the left-right direction, and the Z-axis moving mechanism moves in the up-down direction. The X-axis moving mechanism is connected to the Y-axis moving mechanism, and the Y-axis moving mechanism is connected to the Z-axis moving mechanism. Thus, the X-axis moving mechanism drives the Y-axis moving mechanism to move in the front-back direction, and the Y-axis moving mechanism drives the Z-axis moving mechanism to move in the left-right direction. The Z-axis moving mechanism is connected to the rotary mechanism 800, and the Z-axis moving mechanism drives the rotary mechanism 800 to move in the up-down direction.

[0029] The rotating mechanism 800 is connected to the third spindle 900, which is connected to the fixture 700. The fixture 700 has a clamping hole in the middle that runs through the front-to-back direction. The clamping hole is used to clamp the workpiece. The third spindle 900 drives the fixture 700 to rotate around the axis extending in the front-to-back direction, thereby causing the workpiece to rotate. The rotating mechanism 800 drives the third spindle 900 to rotate around the axis extending in the up-down direction. The rotating mechanism 800 can change the angle between the rotation axis of the third spindle 900 and the rotation axis of the tool 200, so that the tool 200 can cut the through hole of the workpiece in the fixture 700 from different angles, so as to process the inner wall structure of the through hole of different shapes.

[0030] The fixture 700 clamps the workpiece, placing it between the tool 200 and the support rod 500. When the first spindle 100 drives the tool 200 to machine the inner wall of the through hole of the workpiece, a vibration sensor measures the actual vibration of the tool 200. When the actual vibration exceeds the preset vibration, it indicates that the tool 200 is vibrating significantly. The feed mechanism 600 is then controlled to move the fixture to separate the workpiece from the tool 200. The rotational speed of the second spindle 400 is set to be equal to that of the first spindle 100. Subsequently, the moving mechanism 300 drives the second spindle 400 forward, causing the support rod 500 to abut against the rear end of the tool 200. The front end of the tool 200 is connected to the first spindle 100, and the rear end of the tool 200 abuts against the front end of the support rod 500, ensuring that both ends of the tool 200 are supported by external force. The feed mechanism 600 then drives the fixture 700 to move, allowing the tool 200 to cut the inner wall of the through hole of the workpiece. This helps to reduce the vibration amplitude of the tool 200 during machining and improves the machining accuracy of the through hole of the workpiece.

[0031] The outer diameter of the support rod 500 is smaller than that of the workpiece 210 to prevent the support rod 500 from rubbing against the inner wall of the through hole of the workpiece during rotation.

[0032] Furthermore, the length of the support rod 500 in the front-to-back direction is less than the length of the tool holder 210 in the front-to-back direction, ensuring that the rigidity of the support rod 500 is not too low and avoiding the superposition of the vibration of the support rod 500 and the vibration of the tool 200.

[0033] The cone 230 at the rear end of the tool holder 210 engages with the cone hole 510 at the front end of the support rod 500, so that when the front end of the support rod 500 abuts against the rear end of the tool holder 210, it guides the contact position of the tool holder 210 and the support rod 500, ensuring that the axis of the tool holder 210 coincides with the axis of the support rod 500, and preventing the vibration of the tool holder 210 from being aggravated due to axis misalignment.

[0034] In some embodiments, a third spindle 900 is provided to drive the fixture 700 and the workpiece to rotate, while the first spindle 100 does not drive the tool 200 to rotate. This helps to reduce the centrifugal force during the process of the first spindle 100 driving the tool 200 to rotate, and also helps to reduce the vibration of the tool 200.

[0035] Reference Figure 3 As shown, the present invention also provides a method for controlling a deep hole machining machine.

[0036] The deep hole machining machine tool control method is applied to the deep hole machining machine tool as described in the above embodiments, and the control method includes the following steps.

[0037] In step S100, the first spindle 100 is controlled to drive the tool 200 to cut the inner wall of the through hole, and the vibration sensor is controlled to acquire the actual vibration amount and compare the actual vibration amount with the preset vibration amount.

[0038] After the first spindle 100 drives the tool 200 to rotate, the vibration sensor begins to record the vibration of the tool 200. The vibration sensor measures the vibration at a preset frequency so that the actual vibration can be compared with the preset vibration in real time, and the cutting condition of the tool 200 can be monitored at all times.

[0039] In step S200, when the actual vibration amount is greater than the preset vibration amount, after recording the machining position of the tool 200, the feed mechanism 600 is controlled to move the fixture 700 so that the tool 200 retracts from the inner wall of the through hole.

[0040] When the actual vibration exceeds the preset vibration, it proves that the tool 200 is experiencing increased vibration during the machining of the inner wall of the workpiece through hole. In order to reduce the actual vibration of the tool 200, the machining position of the tool 200 is recorded, the original machining program of the deep hole machining machine is stopped, and then the feed mechanism 600 drives the workpiece to move so that the tool 200 is retracted from the inner wall of the workpiece through hole.

[0041] In step S300, control the second spindle 400 to drive the support rod 500 to rotate, so that the rotational speed of the support rod 500 is equal to the rotational speed of the tool 200.

[0042] The second spindle 400 starts and drives the support rod 500 to rotate, so that the rotation speed of the support rod 500 is equal to the rotation speed of the tool 200, thus avoiding relative friction between the support rod 500 and the tool 200 and damage to the tool 200.

[0043] In step S400, the control moving mechanism 300 drives the second spindle 400 to move forward so that the support rod 500 abuts against the rear end of the tool 200.

[0044] The moving mechanism 300 drives the rotating support rod 500 to abut against the rear end of the tool 200. The front end of the tool 200 is connected to the first spindle 100, and the rear end of the tool 200 abuts against the front end of the support rod 500, thus ensuring that both the front and rear ends of the tool 200 are supported by external force, thereby improving the rigidity of the tool 200.

[0045] In step S500, the feed mechanism 600 is controlled to move the fixture 700 so that the tool 200 feeds into the inner wall of the through hole and returns to the machining position.

[0046] After the rigidity of the cutting tool 200 is increased, the feed mechanism 600 is controlled to move the workpiece so that the cutting tool 200 can re-enter the tool and return to the previously recorded machining position, so that the deep hole machining machine tool can execute the original machining program.

[0047] Step S100 includes the following steps.

[0048] Step S110: Obtain the vibration change curve of the vibration displacement of the tool 200 moving radially as a function of time, and obtain the amplitude based on the vibration change curve.

[0049] The vibration sensor continuously measures the vibration displacement of the tool 200 as it moves radially. After a period of time, the vibration displacement can be obtained as a vibration change curve over time based on the vibration displacement and time. The amplitude can then be obtained from the vibration change curve.

[0050] Step S120: Obtain the actual vibration amount based on the amplitude.

[0051] The actual vibration amount is obtained by measuring the amplitude of the vibration change curve, avoiding the influence of abnormally large or small vibration amounts on the actual vibration amount, so that the actual vibration amount is more consistent with the cutting conditions of the tool 200.

[0052] Step S200 includes the following steps.

[0053] In step S210, the feed mechanism 600 is controlled to drive the fixture 700 to move radially along the tool 200, so that the axis of the through hole coincides with the rotation axis of the tool 200.

[0054] The feed mechanism 600 drives the workpiece to move the axis of the workpiece through hole to the rotation axis of the tool 200, so that the distance between the tool 200 and the inner wall of the workpiece through hole is maximized, and the moving mechanism 300 will not collide with the workpiece before moving forward.

[0055] The control method also includes the following steps.

[0056] Step S600: Compare the actual vibration amount with the ultimate vibration amount. The ultimate vibration amount is greater than the preset vibration amount.

[0057] Since the vibration sensor monitors the vibration of the tool 200 in real time, when the actual vibration of the tool 200 exceeds the limit vibration, it can be determined that the tool 200 has severe wear or chipping, which leads to severe vibration.

[0058] In step S700, when the actual vibration amount is greater than or equal to the limit vibration amount, the feed mechanism 600 is controlled to move the fixture 700 so that the tool 200 is retracted from the inner wall of the through hole.

[0059] When it is determined that the tool 200 is severely worn or chipped, causing severe vibration, the feed mechanism 600 moves the workpiece to retract the tool 200, thus preventing the tool 200 from continuing to machine the inner wall of the workpiece through hole and causing serious consequences.

[0060] In step S800, the moving mechanism 300 is controlled to move the second spindle 400 backward so that the support rod 500 is away from the tool 200, and the feeding mechanism 600 is controlled to move the clamp 700 backward so that the workpiece is away from the tool 200. Then, the first spindle 100 is controlled to stop the tool 200.

[0061] After moving the support rod 500 and the workpiece away from the tool 200, stop the tool 200 to facilitate inspection or replacement of the tool 200.

[0062] This invention also provides a controller, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the deep hole machining machine tool control method described in the above embodiments.

[0063] Taking the example of a controller where the processor and memory can be connected via a bus, memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. Furthermore, memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, memory may optionally include memory remotely located relative to the control processor, and these remote memories can be connected to the controller via a network.

[0064] The non-transient software program and instructions required to implement the deep hole machining machine tool control method of the above embodiments are stored in memory. When executed by a processor, the deep hole machining machine tool control method of the above embodiments is executed, for example, the method described above is executed. Figure 3 The method steps S100 to S500.

[0065] Since the controller adopts all the technical solutions of the deep hole machining machine tool control method of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0066] The embodiments described in this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. As those skilled in the art will know, with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

[0067] Those skilled in the art will understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of this application, and may include more or fewer steps than shown, or combine certain steps, or different steps.

[0068] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0069] Those skilled in the art will understand that all or some of the steps in the methods disclosed above, as well as the functional modules / units in the systems and devices, can be implemented as software, firmware, hardware, or suitable combinations thereof.

[0070] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0071] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. "A and / or B" can represent: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0072] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of the above units is only a logical functional division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed.

[0073] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0074] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0075] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes multiple instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing programs, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0076] The preferred embodiments of the present application have been described above with reference to the accompanying drawings, but this does not limit the scope of the claims of the present application. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and substance of the embodiments of the present application shall be within the scope of the claims of the present application.

Claims

1. A deep hole machining machine tool, characterized in that, The deep hole machining machine tool is used for machining workpieces with pre-drilled through holes, and includes: First main axis; A cutting tool is mounted on the first spindle and is used to cut the inner wall of the through hole; A vibration sensor is installed on the first spindle, and the vibration sensor measures the actual vibration of the cutting tool. The moving mechanism is located behind the first main shaft; The second main shaft is connected to the moving mechanism, and the moving mechanism drives the second main shaft to move in the front-back direction; A support rod is provided on the second spindle, and the rotation axis of the second spindle driving the support rod coincides with the rotation axis of the first spindle driving the tool. Feed mechanism; A clamp is provided on the feed mechanism. The clamp is located between the first spindle and the second spindle. The feed mechanism drives the clamp to move relative to the cutting tool. The clamp is used to hold the workpiece.

2. The deep hole machining tool according to claim 1, characterized in that, The cutting tool includes: A tool holder is connected to the first spindle, and the outer diameter of the support rod is not greater than the outer diameter of the tool holder. The cutting head is located on the outer wall of the cutting shank.

3. The deep hole machining tool according to claim 1, characterized in that, The length of the support rod in the front-to-back direction is less than the length of the cutting tool in the front-to-back direction.

4. The deep hole machining tool according to claim 1, characterized in that, The rear end face of the cutting tool is provided with a cone, and the front end face of the support rod is provided with a conical hole, the shape of which matches the shape of the cone.

5. The deep hole machining tool according to claim 1, characterized in that, The deep hole machining tool also includes: A rotating mechanism connects the feeding mechanism and the clamp. The feeding mechanism drives the rotating mechanism to move, and the rotating mechanism drives the clamp to rotate around a vertical axis.

6. The deep hole machining tool according to claim 1, characterized in that, The deep hole machining tool further includes a third spindle, which connects the moving mechanism and the fixture. The third spindle drives the rotation axis of the fixture to be parallel to the rotation axis of the cutting tool.

7. A control method for a deep hole machining machine, characterized in that, The control method, applied to a deep hole machining machine tool as described in any one of claims 1 to 6, comprises: The first spindle is controlled to drive the tool to cut the inner wall of the through hole, and the vibration sensor is controlled to acquire the actual vibration amount and compare the actual vibration amount with the preset vibration amount. When the actual vibration amount is greater than the preset vibration amount, after recording the machining position of the tool, the feed mechanism is controlled to move the fixture so that the tool retracts from the inner wall of the through hole; The second spindle is controlled to drive the support rod to rotate, so that the rotational speed of the support rod is equal to the rotational speed of the tool; The moving mechanism is controlled to drive the second spindle forward so that the support rod abuts against the rear end of the tool; The feed mechanism is controlled to move the fixture so that the cutting tool feeds into the inner wall of the through hole and returns to the machining position.

8. The deep hole machining machine tool control method according to claim 7, characterized in that, The control method further includes: Comparing the actual vibration amount with the ultimate vibration amount, the ultimate vibration amount is greater than the preset vibration amount; When the actual vibration amount is greater than or equal to the limit vibration amount, the feed mechanism is controlled to move the fixture so that the tool is retracted from the inner wall of the through hole; After controlling the moving mechanism to move the second spindle backward so that the support rod is away from the tool, and controlling the feeding mechanism to move the clamp backward so that the workpiece is away from the tool, the first spindle is controlled to stop the tool.

9. The deep hole machining machine tool control method according to claim 7, characterized in that, The control of the feed mechanism to move the clamp to retract the tool from the inner wall of the through hole includes: The feed mechanism is controlled to drive the fixture to move radially along the tool, so that the axis of the through hole coincides with the rotation axis of the tool.

10. The deep hole machining machine tool control method according to claim 7, characterized in that, The control of the vibration sensor to acquire the actual vibration amount includes: Obtain the vibration change curve of the first spindle moving radially as a function of time, and obtain the amplitude based on the vibration change curve; The actual vibration amount is obtained based on the amplitude.

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