Boring and milling machining device and method

Abstract

The boring and milling device comprises a boring rod, a boring cutter and a cutting fluid nozzle, a vibration suppression cavity is formed in the end, close to the boring cutter, of the boring rod, a vibration suppression cylinder is arranged in the vibration suppression cavity in a clearance mode, and the two ends of the vibration suppression cylinder are both connected with rubber sleeves; one rubber sleeve is communicated with a cutting fluid nozzle, and the other rubber sleeve is communicated with an external cutting fluid source; a supporting rod is arranged on one side of the end of the boring rod, and a rotating wheel used for abutting against the hole wall of a boring hole of a to-be-machined workpiece is rotationally arranged at the end, away from the boring rod, of the supporting rod. A discharging auger arranged in the length direction of the boring rod is rotationally arranged on the supporting rod, and a power assembly used for driving the discharging auger to rotate so as to discharge cuttings on the side, away from the boring cutter, of the boring rod is arranged on the supporting rod. Cuttings are discharged through the discharging auger to be away from the area where the boring cutter is located, and the influence of the accumulated cuttings on the cutting effect of the boring cutter can be reduced; the vibration suppression cylinder is flexibly connected with the boring rod through the rubber sleeve, and the chatter phenomenon of the boring rod can be suppressed or eliminated.

Description

Technical Field

[0001] The present application relates to the technical field of boring and milling equipment, and in particular to a boring and milling processing device and a processing method. Background Art

[0002] As downhole equipment for oil and gas exploration, drilling and mining, non-magnetic drill collars transmit the huge torque of the drill bit while also acting as a shell to protect the various downhole measurement feedback electronic components loaded inside. Therefore, the internal structure of the drill collar is usually designed as a step-shaped structure, and the aperture, dimensional accuracy and concentricity requirements of the step hole are very strict and precise to ensure the sealing, stability and anti-interference performance of the measurement instrument in the high temperature, high pressure and high corrosion environment underground. The length of a single section of the drill collar can reach more than 3m. During processing, deep hole boring is mainly used to machine the internal cavity in the axial direction of the metal column, and then the corresponding structure is machined on the outside of the metal column by milling. However, during the deep hole boring process, due to the large deep hole, the chips are easily accumulated inside the drill pipe, which blocks the inside of the drill pipe and affects the processing quality.

[0003] In the related art, a Chinese patent with application number CN202020969879.1 proposes an anti-blocking deep hole boring and drilling machine cutting oil recoil circulation system, including a chuck, a guide device, an oiler and a drill rod box, as well as a drill rod and a stabilizer, which are arranged on the bed rail from left to right in sequence; a first chip removal opening is provided on the side surface of the drill rod box; a second chip removal opening is provided on the side surface of the guide device; an oil supply system is provided on one side of the bed, and the oil supply system includes two parallel slide rails arranged on the side surface of the bed, and a chip collection device is provided between the two slide rails to slide with the slide rails; the chip collection device cooperates with the first chip removal opening and the second chip removal opening through the slide rails. The device sets the tail of the drill rod as the oil inlet for cutting oil circulation, and sets an oil tank that can adjust the height difference, so that the operator can quickly switch between the traditional oil supply method and the recoil oil supply method, which solves the problem that chips easily block the drill rod when the prior art uses the drill rod for chip removal, and has the characteristics of simple structure, preventing cutting from blocking the drill rod, and flexible use.

[0004] The above-mentioned related technologies have the following defects: although the circulation of cutting oil can transport part of the chips to the outside of the workpiece to be processed, the amount of cutting oil used is too large. When too much cutting oil surges in the boring hole of the workpiece to be processed, it will also aggravate the vibration of the boring tool to a certain extent, making the vibration phenomenon that is very easy to occur in the boring tool with a long boring bar during boring more obvious, which not only affects the service life of the boring tool but also has a great impact on the processing accuracy. Summary of the invention

[0005] In order to improve the problem that chips are difficult to discharge and boring tool chatter easily occurs during the existing deep hole boring process, the present application provides a boring and milling processing device and a processing method.

[0006] The first aspect of the present application provides a boring and milling processing device adopting the following technical solution: A boring and milling device comprises a bed, and a chuck, a guide device, a boring bar and a boring bar box which are sequentially arranged on the bed, a boring cutter is installed at one end of the boring bar away from the boring bar box, a cutting fluid nozzle pointing to the boring cutter is arranged at the end of the boring bar, a vibration suppression cavity is opened inside the end of the boring bar close to the boring cutter, a vibration suppression cylinder is arranged in the gap of the vibration suppression cavity, and rubber sleeves are connected to both ends of the vibration suppression cylinder, one of the rubber sleeves is connected to the cutting fluid nozzle, and the other of the rubber sleeves is connected to an external cutting fluid source; A support rod is provided on one side of the end of the boring bar away from the boring tool, and a rotating wheel is rotatably provided on one end of the support rod away from the boring bar for abutting against the wall of the boring hole of the workpiece to be processed; A discharging auger arranged along the length direction of the boring bar is rotatably arranged on the support rod, and a power component for driving the discharging auger to rotate so as to discharge the chips on the side of the boring bar away from the boring cutter is arranged on the support rod.

[0007] Furthermore, the central axis of the vibration suppression cavity is located on one side of the central axis of the boring bar, and a guide hole is opened on the side wall of the boring bar, and the guide hole is arranged on the side of the central axis of the boring bar away from the central axis of the vibration suppression cavity; The support rod is slidably arranged in the guide hole, and the boring bar is provided with a control mechanism for driving the support rod to drive the rotating wheel to press against the wall of the boring hole of the workpiece to be processed.

[0008] Furthermore, the control mechanism includes an electromagnet installed in the guide hole and a permanent magnet installed on the support rod. The electromagnet and the permanent magnet are arranged opposite to each other and the arrangement direction of the two is arranged along the length direction of the support rod. The electromagnet is electrically connected to a magnetic force controller for controlling the strength of the magnetic field generated by the electromagnet after power is supplied.

[0009] Furthermore, a vibration detection sensor for detecting the vibration state of the vibration suppression cylinder is installed on the vibration suppression cylinder, and the vibration detection sensor is electrically connected to a vibration suppression controller, and the vibration suppression controller is control-connected to the magnetic force controller; The vibration suppression controller is configured to control the magnetic force controller to increase the magnetic field strength generated after the electromagnet is energized when the vibration amount detected by the vibration detection sensor exceeds a set value; and the greater the vibration amount detected by the vibration detection sensor, the greater the amplitude of the magnetic force controller to increase the magnetic field strength generated after the electromagnet is energized.

[0010] Furthermore, a limit spring is arranged between the bottom wall of the guide hole and the support rod, and when the limit spring is compressed to a limit, the electromagnet is not in contact with the permanent magnet and the support rod.

[0011] Furthermore, the rotating wheel and the boring tool are arranged on both sides of the central axis of the boring bar and the line connecting the two is close to the central axis of the boring bar.

[0012] Furthermore, the power assembly includes a main transmission wheel coaxially fixed to the rotating wheel and an auxiliary transmission wheel coaxially fixed to the discharge auger, and the main transmission wheel is in transmission connection with the auxiliary transmission wheel; When the rotating wheel indirectly drives the discharging auger to rotate, the discharging auger moves the chips close to the boring cutter away from the free end of the boring bar.

[0013] Furthermore, a diagonal support rod is detachably mounted on a side of the support rod away from the vibration suppression chamber, the discharge auger is rotatably mounted on the free end of the diagonal support rod, and the straight-line distance between the free end of the diagonal support rod and the central axis of the boring bar is smaller than the straight-line distance between the free end of the support rod and the central axis of the boring bar; A brush is arranged along the contour of the outer edge of one end of the discharge auger close to the support rod. When the rotating wheel abuts against the wall of the boring hole of the workpiece to be processed, the brush flexibly abuts against the wall of the adjacent boring hole of the workpiece to be processed.

[0014] Furthermore, the chuck is used to clamp and fix the workpiece to be processed and drive the workpiece to be processed to rotate along the arrangement direction from the rotating wheel to the discharge auger and then to the boring tool, so that the chips cut by the boring tool on the wall of the bored hole of the workpiece to be processed fly out between the boring tool and the discharge auger.

[0015] A boring and milling method provided in the second aspect of the present application adopts the following technical solution: A boring and milling method, based on the above-mentioned boring and milling device, comprises the following steps: S1. The workpiece to be processed is placed on the chuck at one end for fixing and the other end is placed on the guide device; S2. Controlling the boring bar box so that the boring bar extends into the boring hole of the workpiece to be processed, and aligning the boring tool with the inner top wall of the boring hole of the workpiece to be processed; S3. adjusting the position of the support rod on the boring bar so that the rotating wheel contacts the inner bottom wall of the boring hole of the workpiece to be processed, and continuously delivering cutting fluid to the vibration suppression cylinder so that the cutting fluid nozzle sprays cutting fluid to the boring tool; S4. The workpiece to be processed is driven to rotate by the chuck, and the discharge auger is driven to rotate by the power assembly, so that the chips cut by the boring tool during cutting are discharged by the discharge auger; S5. When the boring tool causes the free end of the boring bar to vibrate during cutting, the vibration suppression cylinder with cutting fluid flowing inside swings in the vibration suppression cavity with the help of the rubber sleeves at both ends to suppress the vibration amplitude of the boring bar.

[0016] In summary, the beneficial technical effects of this application are: 1. The chuck drives the workpiece to be processed to rotate with its central axis as the rotation axis, and the boring tool cuts the wall of the boring hole of the workpiece to be processed; in this process, the rotating wheel contacts and rotates relatively with the wall of the boring hole, which can indirectly drive the discharge auger to rotate on the support rod, so that the chips during the cutting of the boring tool are discharged by the discharge auger, so that these chips are kept away from the area where the boring tool is located, thereby reducing the influence of the accumulated chips on the cutting effect of the boring tool; 2. When the boring tool causes the boring bar to vibrate during operation, since high-pressure cutting fluid continuously flows in the vibration suppression cylinder and the two ends thereof are flexibly connected to the boring bar through rubber sleeves, after the vibration wave of the boring bar is transmitted to the vibration suppression cylinder, the vibration suppression cylinder can vibrate in the vibration suppression cavity compared with the boring bar, which can suppress or eliminate the vibration of the boring bar to a certain extent, thereby achieving the autonomous anti-shake effect of the boring bar, which can effectively ensure the processing quality of the boring and milling processing device of the present application and ensure the effective service life of the boring tool as much as possible; 3. When the boring bar vibrates significantly, the magnetic controller can be used to control the current passing through the electromagnet so that the magnetic repulsion of the electromagnet on the permanent magnet reaches the set value. At this time, the permanent magnet drives the support rod to slide in the guide hole so that the rotary wheel at the free end of the support rod is pressed against the wall of the boring hole of the workpiece to be processed. Since the magnetic repulsion between the electromagnet and the permanent magnet is a flexible force, when the boring bar vibrates, part of its vibration energy will be transmitted to the electromagnet and the permanent magnet and weakened or even offset by the magnetic repulsion between the two, which can also suppress the vibration of the boring bar to a certain extent. Therefore, on the one hand, the vibration of the boring bar is suppressed by the shaking of the built-in vibration suppression cylinder; on the other hand, the vibration of the boring bar is suppressed by the external support rod and rotary wheel supported by the magnetic repulsion force, so that the vibration of the boring bar can be suppressed from the inside out, which greatly improves the vibration phenomenon that is very easy to occur in deep hole boring processing. 4. By using the vibration detection sensor to accurately detect the vibration state of the vibration suppression cylinder in the vibration suppression cavity, the vibration suppression controller and the magnetic force controller can realize the joint control effect of the magnetic repulsion between the electromagnet and the permanent magnet, so that the suppression effect of the support rod and the rotating wheel on the boring bar vibration can be adjusted autonomously in real time with the vibration state of the boring bar itself, and the response is more sensitive, and it can be adjusted to the best vibration suppression combination in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a side view of the overall structure of an embodiment of the present application; Figure 2 It is a schematic structural diagram of a boring bar according to an embodiment of the present application when used in conjunction with a workpiece to be processed; Figure 3 is an end view of the boring bar of the embodiment of the present application when used in conjunction with a workpiece to be machined; Figure 4 is a schematic diagram of a longitudinal cross-sectional structure of a boring bar according to an embodiment of the present application; Figure 5 is a schematic cross-sectional structural diagram of a boring bar according to an embodiment of the present application; Figure 6 It is a schematic diagram of the overall structure of the boring bar of an embodiment of the present application.

[0018] Description of reference numerals: 11. Bed; 12. Chuck; 13. Guide device; 14. Boring bar box; 2. Boring bar; 21. Boring cutter; 22. Vibration suppression chamber; 23. Guide hole; 31. Vibration suppression tube; 32. Rubber sleeve; 33. Vibration detection sensor; 4. Support rod; 41. Rotating wheel; 42. Diagonal support rod; 5. Discharging auger; 51. Brush; 61. Electromagnet; 62. Permanent magnet; 63. Limit spring; 71. Main transmission wheel; 72. Auxiliary transmission wheel; 8. Workpiece to be processed. DETAILED DESCRIPTION

[0019] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0020] The present application embodiment discloses a boring and milling processing device. Figure 1 and Figure 2 It includes a bed 11 and a chuck 12, a guide device 13, a boring bar 2 and a boring bar box 14 which are sequentially arranged on the bed 11, wherein the chuck 12 is used to centrally clamp and fix the workpiece 8 to be processed and drive the workpiece 8 to be processed to rotate at a set speed, the guide device 13 is used to limit the free end of the workpiece 8 to be processed to ensure its stable rotation, and the boring bar box 14 is used to drive the boring bar 2 to feed along its length direction and adjust the position of the boring bar 2. The above are all conventional technical means and will not be repeated here.

[0021] Reference Figure 3 , Figure 4 and Figure 5 A boring tool 21 is installed at one end of the boring bar 2 away from the boring bar box 14, and a cutting fluid nozzle (not shown in the figure) pointing to the boring tool 21 is arranged at the end of the boring bar 2. A vibration suppression chamber 22 is provided inside the end of the boring bar 2 close to the boring tool 21. The vibration suppression chamber 22 is cylindrical and arranged along the length direction of the boring bar 2. A vibration suppression cylinder 31 is arranged in the gap of the vibration suppression chamber 22. Both ends of the vibration suppression cylinder 31 are connected with rubber sleeves 32. The end of the rubber sleeve 32 away from the vibration suppression cylinder 31 is fixed to the cavity wall at the two opposite ends of the vibration suppression chamber 22. One of the rubber sleeves 32 is connected to the cutting fluid nozzle, and the other rubber sleeve 32 is connected to the external cutting fluid source. In addition, in order to ensure that the high-pressure cutting fluid flowing in the vibration suppression cylinder 31 does not damage the rubber sleeve 32, the rubber sleeve 32 should have an inner braided layer or an outer protective shell to prevent the rubber sleeve 32 from bursting when the internal pressure in the rubber sleeve 32 is too large.

[0022] A support rod 4 is provided on the side of the end of the boring bar 2 away from the boring tool 21. A rotating wheel 41 is rotatably provided on the end of the support rod 4 away from the boring bar 2 for abutting against the wall of the bored hole of the workpiece 8 to be processed. The wheel body of the rotating wheel 41 is made of metal or wear-resistant rubber, and the rotation axis of the rotating wheel 41 is parallel to the central axis of the boring bar 2.

[0023] The support rod 4 is rotatably provided with a discharging auger 5 arranged along the length direction of the boring bar 2, and the support rod 4 is provided with a power assembly for driving the discharging auger 5 to rotate so as to discharge the chips on the side of the boring bar 2 away from the boring cutter 21; and in order to ensure the stability of the discharging auger 5 when rotating and discharging, the axial length of the discharging auger 5 does not exceed 20 cm, and it is only necessary to discharge the chips close to the boring cutter 21 as much as possible. In addition, when the boring bar 2 eccentrically extends into the boring hole of the workpiece 8 to be processed, the discharging auger 5 should be located in the area with the maximum gap between the boring bar 2 and the wall of the boring hole of the workpiece 8 to be processed, and optimally, this area should be located in the lower half of the cross section of the boring hole of the workpiece 8 to be processed, so that the chips that slide to the inner bottom wall of the boring hole of the workpiece 8 to be processed can be stably discharged by the discharging auger 5.

[0024] Therefore, when using the present application for deep hole boring processing, first, the workpiece 8 to be processed is passed through the guide device 13 and fixed on the chuck 12, and the guide device 13 is adjusted so that the workpiece 8 to be processed is coaxial with the rotating part of the chuck 12, and then the boring bar box 14 is moved so that the end of the boring bar 2 equipped with the boring tool 21 extends into the boring hole of the workpiece 8 to be processed, and the boring tool 21 on the boring bar 2 contacts the inner top of the wall of the boring hole of the workpiece 8 to be processed. At this time, the discharge auger 5 on the boring bar 2 is located in the lower part of the boring hole of the workpiece 8 to be processed. After the cutting fluid is continuously and stably input into the vibration suppression cylinder 31, the cutting fluid is sprayed from the cutting fluid nozzle onto the boring tool 21, and then the workpiece 8 to be processed is driven to rotate with its central axis as the rotation axis through the chuck 12, and the boring tool 21 cuts the wall of the boring hole of the workpiece 8 to be processed.

[0025] In this process, the discharge auger 5 is driven to rotate by the power assembly, so that the chips generated by the boring tool 21 during cutting are discharged by the discharge auger 5, so that these chips are kept away from the area where the boring tool 21 is located, thereby reducing the influence of the accumulated chips on the cutting effect of the boring tool 21. At the same time, when the boring tool 21 causes the boring bar 2 to vibrate during operation, since high-pressure cutting fluid continuously flows in the vibration suppression cylinder 31, and its two ends are flexibly connected to the boring bar 2 through the rubber sleeve 32, after the vibration wave of the boring bar 2 is transmitted to the vibration suppression cylinder 31, the vibration suppression cylinder 31 can vibrate in the vibration suppression chamber 22 compared with the boring bar 2, which can suppress or eliminate the vibration phenomenon of the boring bar 2 to a certain extent, thereby achieving the autonomous anti-shake effect of the boring bar 2, which can effectively ensure the processing quality of the boring and milling processing device of the present application, and ensure the effective service life of the boring tool 21 as much as possible.

[0026] In order to further suppress the chatter of the boring bar 2, refer to Figure 3 , Figure 4 and Figure 5 The central axis of the vibration suppression cavity 22 is located on one side of the central axis of the boring bar 2, and a guide hole 23 is opened on the side wall of the boring bar 2. The guide hole 23 is arranged on the side of the central axis of the boring bar 2 away from the central axis of the vibration suppression cavity 22; The support rod 4 is slidably disposed in the guide hole 23 , and the boring bar 2 is provided with a control mechanism for driving the support rod 4 to drive the rotating wheel 41 to press against the wall of the boring hole of the workpiece 8 to be processed.

[0027] Among them, the control mechanism includes an electromagnet 61 installed in the guide hole 23 and a permanent magnet 62 installed on the support rod 4. The electromagnet 61 and the permanent magnet 62 are arranged opposite to each other and the arrangement direction of the two is arranged along the length direction of the support rod 4. The electromagnet 61 is electrically connected to a magnetic force controller for controlling the strength of the magnetic field generated by the electromagnet 61 after power is supplied. After power is supplied to the electromagnet 61, the electromagnet 61 repel each other magnetically with the permanent magnet 62.

[0028] Therefore, when the boring bar 2 vibrates more obviously, the magnitude of the current passing through the electromagnet 61 is controlled by the magnetic controller so that the magnetic repulsion force of the electromagnet 61 on the permanent magnet 62 reaches a set value. At this time, the permanent magnet 62 drives the support rod 4 to slide in the guide hole 23 so that the rotating wheel 41 at the free end of the support rod 4 is pressed against the wall of the boring hole of the workpiece 8 to be processed. Since the magnetic repulsion force between the electromagnet 61 and the permanent magnet 62 is a flexible force, when the boring bar 2 vibrates, part of its vibration energy will also be transmitted to between the electromagnet 61 and the permanent magnet 62 and weakened or even offset by the magnetic repulsion force between the two, which can also suppress the vibration of the boring bar 2 to a certain extent.

[0029] Thus, on the one hand, the vibration of the boring bar 2 is suppressed by the shaking of the built-in vibration suppression cylinder 31; on the other hand, the vibration of the boring bar 2 is controlled by the external support rod 4 and the rotating wheel 41 supported by the magnetic repulsion force. The vibration of the boring bar 2 can be suppressed from the inside out, which greatly improves the phenomenon of vibration that is very easy to occur in deep hole boring processing.

[0030] However, considering that the vibration frequency of the boring bar 2 is not constant but changes dynamically in real time, it is difficult for external control to achieve good control accuracy. Figure 4 and Figure 5 A vibration detection sensor 33 for detecting the vibration state of the vibration suppression cylinder 31 is installed. The vibration detection sensor 33 can be an accelerometer, a piezoelectric sensor or a magnetoelectric sensor, which can accurately detect the vibration acceleration and vibration velocity, or it can be a displacement sensor, a gyroscope, etc., which can accurately detect the vibration amplitude and vibration frequency. In the specific configuration, the above sensors can be set separately or in combination.

[0031] The vibration detection sensor 33 is electrically connected to a vibration suppression controller, which is controlled and connected to a magnetic force controller; the vibration suppression controller is configured to control the magnetic force controller to increase the intensity of the magnetic field generated after the electromagnet 61 is energized when the vibration amount detected by the vibration detection sensor 33 exceeds a set value; and the greater the vibration amount (such as amplitude or vibration speed) detected by the vibration detection sensor 33, the greater the amplitude of the magnetic force controller to increase the intensity of the magnetic field generated after the electromagnet 61 is energized.

[0032] Therefore, by using the vibration detection sensor 33 to accurately detect the vibration state of the vibration suppression cylinder 31 in the vibration suppression chamber 22, the joint control effect of the magnetic repulsion force between the electromagnet 61 and the permanent magnet 62 can be achieved through the vibration suppression controller and the magnetic force controller, so that the vibration suppression effect of the support rod 4 and the rotating wheel 41 on the boring bar 2 can be adjusted autonomously in real time according to the vibration state of the boring bar 2 itself, and the response is more sensitive, and it can be adjusted to the best vibration suppression combination in real time.

[0033] In addition, refer to Figure 5A limit spring 63 is arranged between the bottom wall of the guide hole 23 and the support rod 4. When the limit spring 63 is compressed to the limit, the electromagnet 61 does not contact the permanent magnet 62 and the support rod 4, so as to avoid direct collision between the electromagnet 61 and the permanent magnet 62 and cause damage; an anti-slip key is fixed to the side wall of the support rod 4, and an anti-slip groove that is slidably matched with the anti-slip key is provided on the hole wall of the guide hole 23. Moreover, the rotating wheel 41 and the boring tool 21 are arranged on both sides of the central axis of the boring bar 2, and the connecting line of the two is close to the central axis of the boring bar 2. In this way, the magnetic repulsive force vibration suppression direction of the support rod 4 and the rotating wheel 41 can be as close as possible to the main vibration direction of the boring bar 2 when the flutter occurs, so as to ensure the vibration suppression effect.

[0034] In order to minimize the space occupied by the relevant components on the boring bar 2 in the boring hole of the workpiece 8 to be processed, Figure 3 and Figure 6 The above-mentioned power assembly includes a main transmission wheel 71 coaxially fixed to the rotating wheel 41 and an auxiliary transmission wheel 72 coaxially fixed to the discharging auger 5. The main transmission wheel 71 is connected to the auxiliary transmission wheel 72 by transmission, specifically, by a chain, a belt or a synchronous belt. In the present embodiment, the main transmission wheel 71 and the auxiliary transmission wheel 72 are both synchronous wheels, and the two are connected by a synchronous belt transmission to prevent slipping after being wetted by the cutting fluid; and the main transmission wheel 71 and the auxiliary transmission wheel 72 are provided with a protective cover (not shown in the figure) on the outside to prevent chips from affecting the normal transmission of the two.

[0035] When the rotating wheel 41 indirectly drives the discharging auger 5 to rotate, the discharging auger 5 moves the chips near the boring cutter 21 away from the free end of the boring rod 2 .

[0036] In this way, when the rotating wheel 41 is pressed against the wall of the bored hole of the workpiece 8 to be processed, as the workpiece 8 to be processed rotates, the rotating wheel 41 will also rotate and, with the help of the transmission of the main transmission wheel 71 and the auxiliary transmission wheel 72, drive the discharge auger 5 to rotate and discharge the chips. There is no need to set up an additional power source, and less space is occupied.

[0037] In addition, refer to Figure 3 and Figure 6 A diagonal support rod 42 is detachably installed on the side of the support rod 4 facing away from the vibration suppression chamber 22, and the discharging auger 5 is rotatably installed on the free end of the diagonal support rod 42. The straight-line distance between the free end of the diagonal support rod 42 and the central axis of the boring rod 2 is smaller than the straight-line distance between the free end of the support rod 4 and the central axis of the boring rod 2, so as to ensure that the discharging auger 5 will not contact the wall of the boring hole of the workpiece 8 to be processed before the rotating wheel 41, thereby avoiding the discharging failure of the discharging auger 5.

[0038] And, refer to Figure 3 and Figure 6A brush 51 arranged along the contour of the discharge auger 5 is provided on the outer edge of one end close to the support rod 4. When the rotating wheel 41 abuts against the wall of the bored hole of the workpiece 8 to be processed, the brush 51 flexibly abuts against the wall of the adjacent bored hole of the workpiece 8 to be processed, thereby improving the discharge efficiency as much as possible without interfering with the stable rotation of the discharge auger 5.

[0039] It should also be further clarified that the chuck 12 is used to clamp and fix the workpiece 8 to be processed and drive the workpiece 8 to be processed to rotate along the arrangement direction from the rotating wheel 41 to the discharge auger 5 and then to the boring tool 21, so that the chips cut by the boring tool 21 on the wall of the bored hole of the workpiece 8 to be processed fly out between the boring tool 21 and the discharge auger 5.

[0040] In this way, when the workpiece 8 to be processed rotates, the chips cut by the boring tool 21 splash to the area between the boring tool 21 and the discharge auger 5 under the action of inertia. Most of the chips can be transported outwards and away from the processing trajectory of the boring tool 21 on the workpiece 8 to be processed under the action of the rotating discharge auger 5. A small amount of chips fall and remain on the wall of the boring hole of the workpiece 8 to be processed as the workpiece 8 to be processed rotates, but they will also be transported outwards under the action of the brush 51 on the discharge auger 5.

[0041] Moreover, since the discharge auger 5 is arranged between the boring tool 21 and the rotating wheel 41, the bristles on the discharge auger 5 can clean the wall of the boring hole that the rotating wheel 41 is about to contact in advance, which can significantly reduce the slippage between the rotating wheel 41 and the wall of the boring hole of the workpiece 8 to be processed, thereby effectively ensuring the long-term and stable discharge effect of the discharge auger 5.

[0042] The present application embodiment discloses a boring and milling method, based on the above-mentioned boring and milling device, referring to Figure 1 , Figure 2 and Figure 3 , which comprises the following steps: S1. The workpiece 8 to be processed is placed on the chuck 12 at one end for fixing, and the other end is placed on the guide device 13; S2. Control the boring bar box 14 so that the boring bar 2 extends into the boring hole of the workpiece 8 to be processed, and align the boring tool 21 with the inner top wall of the boring hole of the workpiece 8 to be processed; S3. Adjust the position of the support rod 4 on the boring bar 2 so that the wheel 41 contacts the inner bottom wall of the boring hole of the workpiece 8 to be processed, and continuously deliver the cutting fluid to the vibration suppression cylinder 31 so that the cutting fluid nozzle sprays the cutting fluid to the boring tool 21; S4. The workpiece 8 to be processed is driven to rotate by the chuck 12, and the discharge auger 5 is driven to rotate by the power assembly, so that the chips when the boring cutter 21 is cut are discharged by the discharge auger 5; S5. When the boring tool 21 causes the free end of the boring bar 2 to vibrate during cutting, the vibration suppression cylinder 31 with cutting fluid flowing inside swings in the vibration suppression chamber 22 with the help of the rubber sleeves 32 at both ends thereof to suppress the vibration amplitude of the boring bar 2.

[0043] The implementation principle of a boring and milling processing device in the embodiment of the present application is: The chuck 12 drives the workpiece 8 to be processed to rotate with its central axis as the rotation axis, and the boring tool 21 cuts the wall of the boring hole of the workpiece 8 to be processed; in this process, the rotating wheel 41 contacts the wall of the boring hole and rotates relatively, which can indirectly drive the discharge auger 5 to rotate on the support rod 4, so that the chips generated by the boring tool 21 during cutting are discharged by the discharge auger 5, so that these chips are kept away from the area where the boring tool 21 is located, thereby reducing the influence of the accumulated chips on the cutting effect of the boring tool 21.

[0044] When the boring tool 21 causes the boring bar 2 to vibrate during operation, since high-pressure cutting fluid continuously flows in the vibration suppression cylinder 31 and its two ends are flexibly connected to the boring bar 2 through the rubber sleeves 32, after the vibration wave of the boring bar 2 is transmitted to the vibration suppression cylinder 31, the vibration suppression cylinder 31 can vibrate in the vibration suppression cavity 22 compared with the boring bar 2, which can suppress or eliminate the vibration phenomenon of the boring bar 2 to a certain extent, thereby achieving the autonomous anti-shake effect of the boring bar 2, which can effectively ensure the processing quality of the boring and milling processing device of the present application and ensure the effective service life of the boring tool 21 as much as possible.

[0045] Furthermore, when the boring bar 2 vibrates significantly, the magnitude of the current passing through the electromagnet 61 can be controlled by a magnetic force controller so that the magnetic repulsion of the electromagnet 61 on the permanent magnet 62 reaches a set value. At this time, the permanent magnet 62 drives the support rod 4 to slide in the guide hole 23 so that the rotating wheel 41 at the free end of the support rod 4 is pressed against the wall of the boring hole of the workpiece 8 to be processed. Since the magnetic repulsion between the electromagnet 61 and the permanent magnet 62 is a flexible force, when the boring bar 2 vibrates, part of its vibration energy will also be transmitted to between the electromagnet 61 and the permanent magnet 62 and weakened or even offset by the magnetic repulsion between the two, which can also suppress the vibration of the boring bar 2 to a certain extent.

[0046] Thus, on the one hand, the vibration of the boring bar 2 is suppressed by the shaking of the built-in vibration suppression cylinder 31; on the other hand, the vibration of the boring bar 2 is controlled by the external support rod 4 and the rotating wheel 41 supported by the magnetic repulsion force. The vibration of the boring bar 2 can be suppressed from the inside out, which greatly improves the phenomenon of vibration that is very easy to occur in deep hole boring processing.

[0047] Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second", "third" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and similar words do not indicate a quantitative limit, but indicate that there is at least one. "Include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A boring and milling device, comprising a bed (11), and a chuck (12), a guide device (13), a boring bar (2) and a boring bar box (14) arranged in sequence on the bed (11), wherein a boring tool (21) is mounted on one end of the boring bar (2) away from the boring bar box (14), characterized in that: The end of the boring bar (2) is provided with a cutting fluid nozzle pointing toward the boring tool (21); an end of the boring bar (2) close to the boring tool (21) is provided with a vibration suppression chamber (22); a vibration suppression cylinder (31) is provided in a gap in the vibration suppression chamber (22); both ends of the vibration suppression cylinder (31) are connected to rubber sleeves (32); one of the rubber sleeves (32) is connected to the cutting fluid nozzle, and the other of the rubber sleeves (32) is connected to an external cutting fluid source; A support rod (4) is provided on the side of the end of the boring bar (2) facing away from the boring tool (21); a rotating wheel (41) is rotatably provided on the end of the support rod (4) facing away from the boring bar (2) for abutting against the wall of the bored hole of the workpiece (8) to be processed; A discharge auger (5) is rotatably provided on the support rod (4) and is arranged along the length direction of the boring bar (2). A power component is provided on the support rod (4) for driving the discharge auger (5) to rotate so as to discharge the chips on the side of the boring bar (2) away from the boring cutter (21).

2. A boring and milling device according to claim 1, characterized in that: The central axis of the vibration suppression cavity (22) is located on one side of the central axis of the boring bar (2); a guide hole (23) is provided on the side wall of the boring bar (2); and the guide hole (23) is arranged on the side of the central axis of the boring bar (2) away from the central axis of the vibration suppression cavity (22); The support rod (4) is slidably disposed in the guide hole (23), and the boring rod (2) is provided with a control mechanism for driving the support rod (4) to drive the rotating wheel (41) to press against the wall of the boring hole of the workpiece (8) to be processed.

3. A boring and milling device according to claim 2, characterized in that: The control mechanism comprises an electromagnet (61) installed in the guide hole (23) and a permanent magnet (62) installed on the support rod (4); the electromagnet (61) and the permanent magnet (62) are arranged opposite to each other and are arranged along the length direction of the support rod (4); the electromagnet (61) is electrically connected to a magnetic force controller for controlling the strength of a magnetic field generated by the electromagnet (61) when power is supplied.

4. A boring and milling device according to claim 3, characterized in that: A vibration detection sensor (33) for detecting the vibration state of the vibration suppression cylinder (31) is installed on the vibration suppression cylinder (31), the vibration detection sensor (33) is electrically connected to a vibration suppression controller, and the vibration suppression controller is control-connected to the magnetic force controller; The vibration suppression controller is configured to control the magnetic force controller to increase the intensity of the magnetic field generated after the electromagnet (61) is energized when the vibration amount detected by the vibration detection sensor (33) exceeds a set value; and the greater the vibration amount detected by the vibration detection sensor (33), the greater the amplitude of the magnetic force controller to increase the intensity of the magnetic field generated after the electromagnet (61) is energized.

5. The boring and milling device according to claim 3, characterized in that: A limit spring (63) is provided between the bottom wall of the guide hole (23) and the support rod (4); when the limit spring (63) is compressed to the limit, the electromagnet (61) is not in contact with the permanent magnet (62) and the support rod (4).

6. A boring and milling device according to any one of claims 1 to 5, characterized in that: The rotating wheel (41) and the boring tool (21) are arranged on both sides of the central axis of the boring bar (2), and a line connecting the two is close to the central axis of the boring bar (2).

7. A boring and milling device according to claim 6, characterized in that: The power assembly comprises a main transmission wheel (71) coaxially fixed to the rotating wheel (41) and an auxiliary transmission wheel (72) coaxially fixed to the discharge auger (5), wherein the main transmission wheel (71) is transmission-connected to the auxiliary transmission wheel (72); When the rotating wheel (41) indirectly drives the discharge auger (5) to rotate, the discharge auger (5) moves the chips close to the boring tool (21) away from the free end of the boring rod (2).

8. A boring and milling device according to claim 7, characterized in that: A diagonal support rod (42) is detachably mounted on a side of the support rod (4) facing away from the vibration suppression chamber (22); the discharge auger (5) is rotatably mounted on the free end of the diagonal support rod (42); the straight-line distance between the free end of the diagonal support rod (42) and the central axis of the boring rod (2) is smaller than the straight-line distance between the free end of the support rod (4) and the central axis of the boring rod (2); A brush (51) is arranged along the contour of the outer edge of one end of the discharge auger (5) close to the support rod (4); when the rotating wheel (41) abuts against the wall of the bored hole of the workpiece (8) to be processed, the brush (51) flexibly abuts against the wall of the bored hole of the adjacent workpiece (8) to be processed.

9. A boring and milling device according to claim 8, characterized in that: The chuck (12) is used to clamp and fix the workpiece (8) to be processed and drive the workpiece (8) to be processed to rotate along the arrangement direction from the rotating wheel (41) to the discharge auger (5) and then to the boring tool (21), so that the chips cut by the boring tool (21) on the wall of the bored hole of the workpiece (8) to be processed fly out between the boring tool (21) and the discharge auger (5).

10. A boring and milling method, based on a boring and milling device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. placing one end of the workpiece (8) to be processed on the chuck (12) for fixing, and placing the other end on the guide device (13); S2. Controlling the boring bar box (14) so ​​that the boring bar (2) extends into the boring hole of the workpiece (8) to be processed, and aligning the boring tool (21) with the inner top wall of the boring hole of the workpiece (8) to be processed; S3. adjusting the position of the support rod (4) on the boring bar (2) so that the rotating wheel (41) contacts the inner bottom wall of the boring hole of the workpiece (8) to be processed, and continuously delivering cutting fluid into the vibration suppression cylinder (31) so that the cutting fluid nozzle sprays cutting fluid toward the boring tool (21); S4. The workpiece (8) to be processed is driven to rotate by the chuck (12), and the discharge auger (5) is driven to rotate by the power assembly, so that the chips generated by the boring tool (21) during cutting are discharged by the discharge auger (5); S5. When the boring tool (21) causes the free end of the boring bar (2) to vibrate during cutting, the vibration suppression cylinder (31) with cutting fluid flowing therein swings in the vibration suppression chamber (22) with the aid of the rubber sleeves (32) at both ends thereof to suppress the vibration amplitude of the boring bar (2).

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