Internal thread turning chip removal mechanism and chip removal method

Abstract

The invention discloses an internal thread turning chip removal mechanism and a chip removal method, belongs to the field of machining and manufacturing, and relates to internal thread turning of carbon structural steel and alloy structural steel. The chip removal mechanism comprises a chip guide device and a cleaning device, a chip guide body is arranged on a tool bar of the turning tool, a chip cavity used for guiding and extruding iron chips is formed in the chip guide body, and an opening of the chip cavity is aligned to the front face of a blade; in the internal thread turning process of the part, generated scrap iron enters the scrap cavity of the scrap guide body, the scrap cavity guides and crushes the scrap iron, and meanwhile, the cleaning device matched with the scrap guide device sprays gas or liquid towards the moving track of the scrap iron and blows the crushed scrap iron out of the inner contour of the part. The chip removal mechanism is simple in principle and structure, guarantees the machining quality of parts, prolongs the service life of a cutter, improves the machining efficiency, and has good popularization and application values.

Description

Technical Field

[0001] The invention belongs to the field of mechanical processing and manufacturing, and particularly relates to an internal thread turning chip removal mechanism and a chip removal method. Background Art

[0002] When CNC lathes are turning internal threads, the iron chips cannot be broken or discharged in a timely and effective manner during the processing, causing the iron chips to scratch the processed surface of the inner contour, which not only affects the processing quality, but also has a serious impact on the tool life and processing efficiency.

[0003] In the field of thread turning, due to the tooth shape of triangular threads, trapezoidal threads, etc., the tip shape of the thread blade is too small, resulting in the inability to design a chip breaker groove on the front cutting edge of the thread blade. Therefore, strip-shaped and strip-shaped iron chips are generated when turning the thread, and the direction of the iron chip discharge is uncontrollable; especially when turning the internal thread, since the thread blade is in the internal contour of the part during the entire turning process, the phenomenon of iron chips entangled with the tool and the workpiece is aggravated, directly leading to serious wear of the tool cutting edge and front cutting edge, scratches on the machined surface of the part's internal contour, and reduced surface quality. At present, in order to solve the above problems, the industry generally adopts frequent manual intervention in each turning process to remove iron chips in order to reduce the impact of iron chip entanglement and scratching. The above practice greatly reduces the processing efficiency and also brings certain safety hazards due to improper operation.

[0004] Generally speaking, the existing iron filings cleaning methods have the following problems:

[0005] (1) The blades of CNC lathe internal thread cutting tools cannot realize the functions of control and breaking because the tip shape of the blades for triangular threads, trapezoidal threads, etc. is too small and the front cutting edge of the thread blade cannot be designed with a chip breaker groove. (2) The internal thread turning process intensifies the accumulation and entanglement of iron chips in the internal contour of the part. The existing process method of using discontinuous and intermittent internal thread turning paths shortens the length of strip-shaped and strip-shaped iron chips, but the shortened iron chips are still accumulated in the internal contour, which cannot solve the problem of iron chips being discharged from the internal contour. (3) When using the process method, the blade cuts intermittently, which has a great impact on the blade cutting edge, seriously affecting the durability of the tool blade; and the internal thread turning process requires manual participation, and each turning cycle requires the use of an iron hook to hook out the iron chips, which is time-consuming and labor-intensive to clean.

[0006] It can be seen that it is difficult to effectively remove iron chips from the inner contour machining area of ​​the part using the existing chip removal method. Summary of the invention

[0007] In order to overcome the above technical defects, the present invention provides a chip removal mechanism and chip removal method for internal thread turning, which can solve the technical problem that the existing chip cleaning method is difficult to effectively discharge the chips from the inner contour processing area of ​​the part.

[0008] In order to achieve the above object, the present invention adopts the following technical contents:

[0009] An internal thread turning chip removal mechanism comprises a chip guide device, wherein the chip guide device comprises a chip guide body arranged on a tool bar of a turning tool;

[0010] A chip cavity is provided on the chip guide body, and the opening of the chip cavity is arranged toward the front side of the blade;

[0011] It also includes a cleaning device matched with the chip guiding device, and the cleaning device can spray gas or liquid toward the moving track of the iron chips.

[0012] Furthermore, the chip cavity adopts an arc-shaped structure, and a chip guide groove is provided on the inner wall, and the chip guide groove is in an arc spiral shape;

[0013] A plurality of chip blocking blocks are arranged on the groove edge of the chip guide groove, and the plurality of chip blocking blocks are arranged and distributed according to the spiral direction of the chip guide groove;

[0014] The bottom surface of the chip guide body is connected to the cutter rod, and the top surface is in contact with the side of the chip cavity, and a chip squeezing step is arranged at the contact point.

[0015] Further, the cleaning device comprises a cleaning body;

[0016] The cleaning body is connected to the top end of the knife rod, and the cleaning body, the chip guide body and the knife rod are surrounded to form a semi-enclosed space;

[0017] The cleaning body is provided with an air outlet hole, and the air outlet hole is arranged toward the track where the iron filings are generated.

[0018] Furthermore, the air outlet includes a first outlet, a second outlet and a third outlet; the first outlet is set to spray in a direction toward the front of the blade; the second outlet is set to spray in an axial direction toward the arbor; and the third outlet is set to spray in a direction toward the debris cavity.

[0019] Furthermore, the cleaning body is provided with an air inlet hole connected with the air outlet hole, a positioning pin with a hollow structure is inserted in the air inlet hole, the cleaning body is connected to the knife rod through the positioning pin, the knife rod is axially provided with an inner through hole, and the positioning pin is connected with the inner through hole.

[0020] Furthermore, a sealing ring is provided between the air inlet hole and the positioning pin.

[0021] Furthermore, a side wall of the cleaning body close to the blade is configured as an arc surface.

[0022] Furthermore, it also includes a chip breaking device, which is used to impact iron chips discharged from the inner contour of the part.

[0023] A chip removal method based on the above-mentioned internal thread turning chip removal mechanism comprises:

[0024] During the turning process, the iron chips generated enter the chip cavity of the chip guide body, which guides and crushes the iron chips. At the same time, the cleaning device sprays gas or liquid toward the moving track of the iron chips to blow the crushed iron chips out of the inner contour of the part.

[0025] Furthermore, the chip removal method comprises:

[0026] During the turning process, the iron chips, with the cooperation of the chip guiding device and the cleaning device, enter the chip guide groove of the chip cavity. Under the impact of the chip blocking block, they are accumulated and crushed at the chip squeezing step to produce plastic deformation. At the same time, the first outlet hole, the second outlet hole and the third outlet hole on the cleaning body respectively spray gas or liquid toward the front side of the blade, the axial direction of the tool rod and the chip cavity to blow the crushed iron chips out of the inner contour of the part.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The present invention provides a chip removal mechanism for internal thread turning, which comprises a chip guiding device and a cleaning device. A chip guiding body is arranged on the tool rod of the turning tool, and a chip cavity for guiding and squeezing iron chips is opened on the chip guiding body, and the opening of the chip cavity is aligned with the front side of the blade. In the process of internal thread turning of parts, the generated iron chips enter the chip cavity of the chip guiding body, and the chip cavity guides and crushes the iron chips. At the same time, the cleaning device matched with the chip guiding device sprays gas or liquid to the moving track of the iron chips to blow the crushed iron chips out of the inner contour of the part. The chip removal mechanism has a simple principle and structure, ensures the processing quality of the parts, increases the service life of the tool, improves the processing efficiency, and has good promotion and application value.

[0029] Preferably, in the present invention, the chip cavity is arc-shaped, a chip guide groove is opened on the inner wall, and a plurality of chip blocking blocks arranged in a spiral manner are provided, and a chip squeezing step is provided at the junction of the top surface of the chip guide body and the side of the chip cavity. In this way, as the iron chips enter the chip cavity, that is, the chip guide groove, they collide with the chip blocking blocks and eventually accumulate and crush at the chip squeezing step to produce plastic deformation. With the cooperation of the chip guide groove, the chip blocking blocks and the chip squeezing step, effective guiding and crushing of the iron chips are achieved.

[0030] Preferably, in the present invention, the cleaning device includes a cleaning body arranged at the top end of the tool rod, and the cleaning body, the chip guide body and the tool rod are enclosed to form a semi-enclosed space; under this design, the cleaning device has two functions. First, the main function of the cleaning device is to cooperate with the chip guide device to discharge the crushed iron chips from the inner contour processing area of ​​the part at high speed by spraying gas or liquid on the moving trajectory of the iron chips; second, when the cleaning body, the chip guide body and the tool rod are enclosed to form a semi-enclosed space, the cleaning device also plays a guiding role; it can effectively block the iron chips flying forward. In the actual production process, the iron chips will mainly fly to the left, front and right directions of the blade. The left side is the turning contact direction of the blade and the part. Therefore, the flying iron chips are blocked by the inner wall of the part and finally gathered in the chip guide device. Similarly, the iron chips in the front will be blocked by the cleaning device and finally gathered in the chip guide device; the efficiency of iron chip discharge is greatly improved.

[0031] Further preferably, the air outlet holes of the chip guide body include a first outlet hole, a second outlet hole and a third outlet hole, which respectively correspond to the front side of the blade, the tool rod and the chip cavity. In this way, the entire moving trajectory of the iron chips is covered, so that the iron chips are discharged from the inner contour processing area of ​​the part at high speed.

[0032] Further preferably, due to the consideration of the space occupied by the lathe, an internal channel is set up, that is, the tool rod of the turning tool is improved, and an internal through hole for connecting the air source (water source) is set, and the cleaning body is connected to the tool rod through a positioning pin with a hollow structure. In this way, when it is necessary to spray gas or liquid, turn on the gas (liquid) pump, and the gas or liquid enters through the internal through hole, passes through the tool rod, the positioning pin and the air inlet to the cleaning body, and is sprayed outward from the air outlet of the cleaning body. Such a design, first of all, saves space; and facilitates standardized and unified configuration. At the connecting end of the tool rod and the turret, air sources or water sources with different pressure values ​​can be connected according to the material specifications of the parts to be processed. Before turning, the configuration and installation are completed, thereby improving the work efficiency of the turning process.

[0033] Preferably, in the present invention, the side wall of the cleaning body close to the blade is set as an arc surface. Since the cleaning body will move axially with the blade and is likely to contact the inner wall of the part, the design of the arc surface can reduce the wear between the inner wall of the part.

[0034] Preferably, in the present invention, a chip breaking device is also provided for impacting iron chips discharged from the inner contour of the part. When the iron chips are discharged from the inner contour of the part, they will form a long strip structure, which is not easy to break. The chip breaking device is used to impact them to achieve the purpose of breaking the iron chips. In combination with the chip guiding device and the cleaning device, the effects of controlling, discharging and breaking the iron chips in the turning process are achieved.

[0035] The present invention also provides a chip removal method for internal thread turning. Based on the above-mentioned internal thread turning chip removal mechanism, the chip removal method can solve the problem of iron chip accumulation in the internal thread turning process, and realize the effective discharge of iron chips from the inner contour processing area of ​​the part; the method is simple in principle, easy to operate and implement, ensures the quality of the internal thread processing of the part, saves manpower and time, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic structural diagram of a chip removal mechanism for internal thread turning provided by an embodiment of the present invention;

[0037] Figure 2 A schematic diagram of the structure of a CNC lathe turning system provided by an embodiment of the present invention;

[0038] Figure 3 The structure explosion diagram of an internal thread turning chip removal mechanism provided by an embodiment of the present invention, wherein: Figure 3 (a) is a three-dimensional schematic diagram. Figure 3 (b) is a three-dimensional schematic diagram from another angle;

[0039] Figure 4 A schematic structural diagram of a chip guide device of an internal thread turning chip removal mechanism provided by an embodiment of the present invention;

[0040] Figure 5 A schematic structural diagram of a cleaning device for an internal thread turning chip removal mechanism provided by an embodiment of the present invention;

[0041] Figure 6 A schematic diagram of the blowing (water) direction of a cleaning device for an internal thread turning chip removal mechanism provided by an embodiment of the present invention;

[0042] Reference numerals:

[0043] 1. CNC lathe; 2. Parts; 3. CNC system; 4. Internal thread turning chip removal mechanism; 5. Turret; 6. First fixing screw; 7. Cleaning body; 8. Second fixing screw; 9. Chip guide body; 10. Tool bar; 11. Blade; 12. Positioning pin; 13. Sealing ring; 14. Internal through hole; 15. Chip block; 16. Chip guide groove; 17. Chip squeezing step; 18. Air inlet; 19. Air outlet;

[0044] 31. Turning tool; 41. Chip guide device; 42. Cleaning device. DETAILED DESCRIPTION

[0045] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail in the following specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0046] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0047] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0049] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0050] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0051] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0053] Example

[0054] Combined with the background technology mentioned above, most of the existing cleaning methods for turning internal threads have the following problems: (1) The blades of CNC lathe internal thread turning tools have too small a tip shape of the blades for triangular threads, trapezoidal threads, etc., and the front cutting edge of the thread blade cannot be designed with a chip breaker groove, so the control and breaking functions cannot be realized. (2) The internal thread turning process intensifies the accumulation and entanglement of iron chips in the internal contour of the part. The existing process method of using discontinuous and intermittent internal thread turning paths shortens the length of strip-shaped and strip-shaped iron chips, but the shortened iron chips are still accumulated in the internal contour, which cannot solve the problem of iron chips being discharged from the internal contour. (3) When using the process method, the blade cuts intermittently, which has a great impact on the blade cutting edge, seriously affecting the durability of the tool blade; and the internal thread turning process requires manual participation, and each turning cycle requires the use of an iron hook to hook out the iron chips, which is time-consuming and labor-intensive to clean. Therefore, there is an urgent need for a device that can be used for controlling, breaking, and discharging iron chips during internal thread processing to solve the current processing status.

[0055] In order to achieve the above-mentioned purpose, the present embodiment provides a chip removal mechanism and chip removal method for internal thread turning, which can effectively solve the problem that iron chips are not easy to be effectively discharged from the inner contour processing area of ​​the part; the chip removal mechanism and chip removal method can be applicable to CNC lathes, and are also applicable to the chip removal of triangular threads, trapezoidal threads and other threads of various carbon structural steels and alloy structural steels.

[0056] The specific structure of this embodiment is described in detail below in conjunction with the accompanying drawings:

[0057] like Figure 1 As shown, this embodiment provides an internal thread turning chip removal mechanism including: a chip guide device 41 and a cleaning device 42 connected to a turning tool 31; the components are connected and fixed by screws.

[0058] Of course, the cleaning device 42 here can be as Figure 1 The device shown is connected to the cutter bar 10 or can be disconnected. Any device that can spray gas or liquid onto the moving track of the iron chips meets the requirements.

[0059] The turning tool 31 comprises a tool bar 10 and a blade 11. The blade 11 is fixed to the front end of the tool bar 10 at a horizontal position by screws.

[0060] like Figure 4 As shown, the chip guide device 41 is designed as a heterogeneous structure, and the chip guide body 9 is recessed inward to form a chip cavity, which specifically includes: a circular arc spiral chip guide groove 16, a spirally distributed rectangular chip block 15 (it can also be set to other shapes), and a chip squeezer 17. It is an integrally processed structure and is coated with a wear-resistant coating. The chip guide device 41 is installed using the second fixing screw 8 as shown in FIG. Figure 1 The position in.

[0061] like Figure 2 As shown, Figure 2 It is a structural diagram of the entire CNC lathe turning system, including a CNC lathe 1, a CNC system 3, and a turret 5. During processing, the part 2 is fixed on the CNC lathe 1, and the internal thread turning chip removal mechanism is fixed on the turret 5.

[0062] The working principle (chip removal method) of the internal thread turning chip removal mechanism in this embodiment is as follows:

[0063] The internal thread turning chip removal mechanism 4 is installed on the turret 5 of the CNC lathe 1. When machining the internal thread, the CNC machining program controls the turning tool 31 to drive the internal thread turning chip removal mechanism 4 to perform turning movement. When turning the internal thread once, the iron chips generated enter the chip guide device 41, and the iron chips hit the chip block 15 along the arc spiral groove of the chip guide groove 16, and accumulate and crush at the chip squeezing step 17 to produce plastic deformation. At the same time, the cleaning device 42 matched with the chip guide device 41 sprays gas or liquid to the moving track of the iron chips, and discharges the plastically deformed iron chips backward at high speed from the inner contour processing area, completing the discharge of the iron chips after turning the internal thread once (knife). During the entire internal thread turning process, this process will be repeated every time the internal thread is turned (knife) until the internal thread turning is completed.

[0064] In another embodiment of the present invention, Figure 3 (a) and Figure 3 As shown in (b), combined Figure 5 The specific structure of the cleaning device 42 includes: a first fixing screw 6, a hollow positioning pin 12, a sealing ring 13, an air inlet 18 (which can also be a water inlet), and three air outlets 19 in different directions (which can also be water outlets). The thread of the positioning pin 12 is connected to the front end of the knife rod 10, and the sealing ring 13 is sleeved on the step of the positioning pin 12 and inserted into the air inlet 18. The cleaning body 7 is installed in the position as shown in the figure by fixing the first screw 6. Figure 1 The front end of the knife bar 10.

[0065] Among them, due to the space occupied by the lathe, an internal channel setting is adopted, that is, the tool rod 10 of the turning tool 31 is improved, and an internal through hole 14 for connecting the air source (water source) is set, and the cleaning body 7 is connected to the tool rod 10 through a hollow structure positioning pin 12. In this way, when it is necessary to spray gas or liquid, turn on the gas (liquid) pump, and the gas or liquid enters through the internal through hole 14, passes through the tool rod 10, the positioning pin 12 and the air inlet 18 in turn to the cleaning body 7, and is sprayed outward from the air outlet 19 of the cleaning body 7; such a design, first of all, saves space; and facilitates standardized and unified configuration. At the connecting end of the tool rod 10 and the turret 5, air sources or water sources with different pressure values ​​can be connected according to the material specifications of the parts to be processed. Before turning, the configuration and installation are completed, which improves the work efficiency of the turning process.

[0066] In this embodiment, the turret 5 is designed with compressed air (1Mpa) gas circuit, which is connected to the inner through hole 14 of each tool position, and the electromagnetic valve is used to control the opening and closing of the gas circuit, and the machine tool M code is developed to realize the call in the processing program. The cylindrical tool bar 10 has a standard diameter and can use a standard tool sleeve to be directly installed on the turret 5 of the CNC lathe; and it can be connected to the gas circuit of the redesigned turret 5, and can form an open and closed gas circuit under the call control of the CNC system M code.

[0067] like Figure 6 As shown, in another embodiment of the present invention, the air outlet 19 is set as a first outlet, a second outlet and a third outlet, the first outlet is set to spray in a direction toward the front of the blade 11; the second outlet is set to spray in an axial direction of the tool rod 10; the third outlet is set to spray in a direction toward the chip cavity; when machining the internal thread, the CNC machining program controls the turning tool 31 to drive the internal thread turning chip removal mechanism 4 to perform turning movement, and each time the internal thread is turned, the iron chips generated enter the chip guide device 41, The iron chips hit the chip block 15 along the arc spiral groove of the chip guide groove 16, and are piled up and crushed at the chip squeezing step 17 to produce plastic deformation. At the same time, the M code in the processing program opens the solenoid valve, and 1Mpa compressed air flows out from the air (water) outlet 19 at high speed in three directions: blowing obliquely downward toward the internal thread blade 11, blowing forward toward the chip guide groove 16, and blowing obliquely upward toward the chip squeezing step 17, and the plastically deformed iron chips are discharged backward at high speed from the inner contour processing area, completing the discharge of the iron chips after turning the internal thread once (knife). During the entire internal thread turning process, this process will be repeated for each turning (knife) until the internal thread turning is completed.

[0068] In another embodiment of the present invention, the mechanism is also provided with a chip breaking device for impacting the iron chips discharged from the inner contour of the part, and the strip iron chips generated by thread processing are broken with the help of 5-7Mpa high-pressure coolant. First, the coolant is pressurized to 5-7Mpa by an external high-pressure pump, and is directly connected to the 5-tool position of the CNC turret through the high-pressure water circuit of the machine tool, and the 5-7Mpa high-pressure coolant directly impacts the thread turning tool blade from the tool position outlet.

[0069] During the turning process, the high-speed iron chips are impacted by the high-pressure coolant, causing them to deform or curl, thus achieving the purpose of breaking the iron chips.

[0070] In summary, the present invention provides a chip removal mechanism and method for internal thread turning, which has the following advantages over the existing chip cleaning method:

[0071] The use of this mechanism and chip removal method solves the problem that during the turning process of internal threads, iron chips often entangle the tool and the workpiece, affecting the quality of the inner contour and processed surface of the parts. In the actual production and processing process, the tool life is increased and the processing efficiency is improved; unmanned intervention in the internal thread processing process is achieved, making the internal thread turning processing in the machinery manufacturing industry a big step towards automation.

[0072] First, the control, breaking and removal of iron chips in internal thread turning are realized.

[0073] Secondly, the chip guide device in the mechanism can control the discharge direction of the iron chips during the internal thread turning process, so as to achieve the bending, crushing and plastic deformation of the iron chips.

[0074] Third, the cleaning device in the internal thread turning chip removal device can, under the control of the CNC machining program, blow 1Mpa compressed air from the air outlet at high speed in three directions: obliquely downward toward the internal thread blade 11, forwardly backward toward the chip guide groove 16, and obliquely upward toward the chip squeezing step 17, thereby discharging the plastically deformed iron chips backward to the inner contour machining area.

[0075] Fourthly, the chip removal mechanism and chip removal method of the internal thread turning utilize the numerical control system and numerical control turret of the numerical control lathe. Under the control of the processing program, the iron chips are discharged from the processing area in a certain direction. The process is unmanned and safe and efficient.

[0076] Fifth, the success rate of controlling, breaking and discharging the iron chips generated by internal thread turning is 100%.

[0077] The above embodiment is only one of the implementation methods that can realize the technical solution of the present invention. The scope of protection claimed by the present invention is not limited only to this embodiment, but also includes changes, replacements and other implementation methods that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the present invention.

Claims

1. A chip removal mechanism for internal thread turning, characterized in that: It comprises a chip guide device (41), wherein the chip guide device (41) comprises a chip guide body (9) arranged on a tool rod (10) of a turning tool (31); The chip guide body (9) is provided with a chip cavity, and the opening of the chip cavity is arranged toward the front of the blade (11); It also includes a cleaning device (42) that cooperates with the chip guiding device (41), and the cleaning device (42) is capable of spraying gas or liquid onto the moving track of the iron chips.

2. The internal thread turning chip removal mechanism according to claim 1, characterized in that: The chip cavity adopts an arc-shaped structure, and a chip guide groove (16) is provided on the inner wall, and the chip guide groove (16) is in an arc spiral shape; A plurality of chip blocking blocks (15) are arranged on the groove edge of the chip guide groove (16), and the plurality of chip blocking blocks (15) are arranged and distributed according to the spiral direction of the chip guide groove (16); The bottom surface of the chip guide body (9) is connected to the cutter rod (10), and the top surface is in contact with the side of the chip cavity, and a chip squeezing step (17) is provided at the contact point.

3. An internal thread turning chip removal mechanism according to claim 1 or 2, characterized in that: The cleaning device (42) comprises a cleaning body (7); The cleaning body (7) is connected to the top end of the knife rod (10), and the cleaning body (7), the chip guide body (9) and the knife rod (10) together form a semi-enclosed space; The cleaning body (7) is provided with an air outlet hole (19), and the air outlet hole (19) is arranged toward the track where the iron filings are generated.

4. The internal thread turning chip removal mechanism according to claim 3, characterized in that: The air outlet holes (19) include a first outlet hole, a second outlet hole and a third outlet hole; the first outlet hole is arranged to spray in a direction toward the front of the blade (11); the second outlet hole is arranged to spray in an axial direction toward the knife rod (10); and the third outlet hole is arranged to spray in a direction toward the debris cavity.

5. The internal thread turning chip removal mechanism according to claim 3, characterized in that: The cleaning body (7) is provided with an air inlet hole (18) connected to the air outlet hole (19); a positioning pin (12) with a hollow structure is inserted into the air inlet hole (18); the cleaning body (7) is connected to the knife rod (11) via the positioning pin (12); an inner through hole (14) is provided in the axial direction of the knife rod (11); and the positioning pin (12) is connected to the inner through hole (14).

6. The internal thread turning chip removal mechanism according to claim 5, characterized in that: A sealing ring (13) is provided between the air inlet hole (18) and the positioning pin (12).

7. The internal thread turning chip removal mechanism according to claim 3, characterized in that: The side wall of the cleaning body (7) close to the blade (11) is arranged as an arc surface.

8. The internal thread turning chip removal mechanism according to claim 1, characterized in that: Also included is a chip breaker, which is used to impact iron chips ejected from the inner contour of the part.

9. A chip removal method based on the internal thread turning chip removal mechanism according to any one of claims 1 to 8, characterized in that: include: During the turning process, the iron chips generated enter the chip cavity of the chip guide body (9), and the chip cavity guides and crushes the iron chips. At the same time, the cleaning device (42) sprays gas or liquid toward the moving track of the iron chips to blow the crushed iron chips out of the inner contour of the part.

10. The chip removal method according to claim 9, characterized in that: include: During the turning process, the iron chips enter the chip guide groove (16) of the chip cavity with the cooperation of the chip guide device (41) and the cleaning device (42), and are accumulated and crushed at the chip squeezing step (17) under the impact of the chip blocking block (15), resulting in plastic deformation. At the same time, the first outlet hole, the second outlet hole and the third outlet hole on the cleaning body (7) respectively correspond to the front of the blade (11), the axial direction of the tool rod (11) and the chip cavity to blow the crushed iron chips out of the inner contour of the part.

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