A device for active adjustable chip breaking and cooling of an internal cylindrical turning tool

Abstract

The application provides an active adjustable chip breaking and cooling internal circular turning tool device, which comprises a row tool seat, an internal circular turning tool installed on the row tool seat, a chip breaker connected with a transmission shaft system, a belt transmission mechanism box with a belt transmission mechanism installed inside, a direction adjusting mechanism installed on a tool head of the internal circular turning tool and used for adjusting the position of the chip breaker, and a motor box fixed at the end of the internal circular turning tool and connected with the belt transmission mechanism and used for driving the belt transmission mechanism. The active adjustable chip breaking and cooling internal circular turning tool device can solve the problems that the prior art is difficult to adapt to the change of chips generated when different cutting amounts and different workpiece materials are cut and a large amount of cutting heat generated when a workpiece is machined by the tool.

Description

Technical Field

[0001] This invention relates to the field of machining equipment for turning, and in particular to an internal turning tool device with actively adjustable chip breaking and cooling. Background Technology

[0002] When internal turning tools are used to machine the inner surfaces of ductile materials, they produce long, ribbon-like chips that are difficult to clean. The continuous chips can easily become entangled in the tool, scratching the machined surface and, in severe cases, damaging the tool or even causing machine downtime. Existing chip breaking methods mostly involve creating chip breaker grooves on the tool, which cannot achieve actively adjustable chip breaking and are difficult to adapt to changes in chip quality caused by different cutting parameters and different workpiece materials.

[0003] In addition, cutting tools generate a lot of cutting heat when machining workpieces, and the heat is mainly concentrated on the rake face. If the cutting heat is not effectively conducted away through the surrounding medium, the cutting temperature will be too high, which will accelerate tool wear, reduce tool life, and affect the machining accuracy and surface quality of the workpiece. Summary of the Invention

[0004] To address these issues, embodiments of the present invention propose an actively adjustable chip breaking and cooling internal turning tool device to solve problems such as the difficulty of adapting to different cutting parameters and different workpiece materials in the prior art, as well as the large amount of cutting heat generated when the tool is machining the workpiece.

[0005] An active adjustable chip breaking and cooling internal turning tool device according to an embodiment of the present invention includes:

[0006] Knife holder;

[0007] Internal turning tool, the internal turning tool is mounted on the tool holder;

[0008] Chip breaker, which is connected to the drive shaft system;

[0009] A belt drive mechanism housing, which houses the belt drive mechanism;

[0010] The orientation adjustment mechanism is installed on the internal turning tool head and is used to adjust the position of the chip breaker;

[0011] The motor housing is fixed to the end of the inner turning tool and connected to the belt drive mechanism to drive the belt drive mechanism.

[0012] The direction adjustment mechanism includes a longitudinal slider, a front-to-back adjustment slot, a transverse slider, a left-to-right adjustment slot, a lower bushing, a front bushing, a left-to-right adjustment T-bolt, and a front-to-back adjustment T-bolt. The longitudinal slider and the transverse slider are nested on the front-to-back adjustment T-bolt and are fixedly connected by nuts. The front-to-back adjustment T-bolt can move back and forth along the front-to-back adjustment slot. The lower bushing and the transverse slider are nested on the left-to-right adjustment T-bolt and are fixedly connected by nuts. The left-to-right adjustment T-bolt can move left and right along the left-to-right adjustment slot. The front bushing and the lower bushing are fixedly connected by countersunk screws.

[0013] The internal turning tool includes a tool holder, the end of which is a tool head. The tool head has a coolant flow channel, and a sealing ring is installed at the connection between the coolant flow channel in the tool head and the coolant flow channel in the nozzle.

[0014] The aforementioned actively adjustable chip-breaking and cooling internal turning tool device has two 12mm space between the front and rear adjusting slots on the longitudinal slider to facilitate the movement and adjustment of the transverse slider. The longitudinal and transverse sliders are nested on two front and rear adjusting T-bolts. After moving the transverse slider to the appropriate position, tightening the front and rear adjusting nuts fixes the front and rear positions. The lower bushing is connected to the transverse slider via left and right adjusting T-bolts. The left and right adjusting slots on the transverse slider have 5mm space to facilitate the movement and adjustment of the lower bushing. The transverse slider and lower bushing are nested on two left and right adjusting T-bolts. After moving the lower bushing to the appropriate position, tightening the left and right adjusting nuts fixes the left and right positions. The front bushing and lower bushing are fixedly connected by countersunk screws. The front and rear positions of the chip breaker are adjusted through the following steps: first, loosen the front and rear adjusting nuts; then, move the transverse slider to a suitable position on the front and rear adjusting slots; finally, tighten the front and rear adjusting nuts. The left and right position adjustment of the chip breaker is achieved through the following steps: first, loosen the left and right adjustment nuts, then move the lower bushing to position it at a suitable position on the left and right adjustment slot, and finally tighten the left and right adjustment nuts.

[0015] In the aforementioned actively adjustable chip-breaking and cooling internal turning tool device, when the direction adjustment mechanism adjusts the orientation of the chip breaker, the position of the drive shaft connected to the large pulley inside the lower bushing will change. The set screw on the large pulley should be loosened first. After the direction adjustment mechanism moves to the appropriate position and is fixed, the set screw should be tightened to fix the large pulley on the drive shaft. Then, the belt drive mechanism should be pre-tightened. The internal turning tool head is provided with mounting screw holes. The protective cover of the direction adjustment mechanism and the internal turning tool head are fixedly connected by the outer cover screw to ensure that the direction adjustment mechanism is not affected by chips.

[0016] The aforementioned actively adjustable chip breaking and cooling internal turning tool device includes a tool holder comprising a fastening bolt and an internal tool holder. The internal tool holder has a pre-drilled internal hole for clamping the internal turning tool. The fastening bolt is used to fix the internal turning tool. The internal tool holder has a mounting hole, and the internal tool holder can be mounted on the machine tool operating table.

[0017] The aforementioned actively adjustable chip breaking and cooling internal turning tool device includes a belt drive mechanism comprising a small pulley and a large pulley. The small pulley is connected to the motor shaft of the motor housing via a set screw, and the large pulley is connected to the drive shaft via a set screw. The other end of the drive shaft is fixedly connected to a direction adjustment mechanism. The small pulley and the large pulley are connected by a belt with a transmission ratio of 1:2.

[0018] The aforementioned actively adjustable chip breaking and cooling internal turning tool device has a mounting screw hole on the tool head, and the protective cover of the direction adjustment mechanism is fixedly connected to the tool head by an outer cover screw.

[0019] The aforementioned actively adjustable chip-breaking and cooling internal turning tool device includes an internal turning tool comprising an insert, a nozzle, and a tool pad. The tool shank is located within a tool holder, and the tool head has an insert mounting groove. The insert and tool pad are fixed within the insert mounting groove by clamping screws. The nozzle is located at the end of a longitudinal slider and is connected to the tool head by an internal hexagonal screw, with the nozzle outlet aligned with the tool tip. A spray cooling interface is provided on the bottom surface of the tool head. The spray cooling interface is used to introduce cooling medium. The nozzle has a coolant flow channel. An external spray cooling system delivers the cooling medium to the spray cooling interface, and then sprays it onto the cutting area through the coolant flow channel in the nozzle, thereby achieving the functions of cooling, lubrication, chip blowing, and chip removal.

[0020] Preferably, the shape of the nozzle is not limited to one type, and can be a cylindrical nozzle, a flat nozzle, a pointed nozzle, or other similar forms.

[0021] The aforementioned actively adjustable chip breaker and cooling internal turning tool device comprises a drive shaft mounted in a bearing housing on a lower bushing via rolling bearings and a retaining ring, a gear shaft mounted in a bearing housing on a front bushing via rolling bearings and a retaining ring, and a chip breaker drive shaft mounted in a bearing housing on a front bushing via rolling bearings and a retaining ring. The chip breaker and its drive shaft are connected by screws, and the gear shaft transmits power to the chip breaker drive shaft for chip breaker operation. The bottom of the chip breaker is the cutting edge, and a 2mm space is left below the chip breaker drive shaft to facilitate chip breaker movement and adjustment. After moving the chip breaker to a suitable height, the set screw is tightened. The vertical position adjustment of the chip breaker is achieved through the following steps: first, loosen the set screw; then, adjust the chip breaker to the appropriate height; and finally, tighten the set screw.

[0022] Furthermore, the cutting edge has a specially designed shape that will not affect the normal operation of the spray cooling system when rotating at high speed, and the spray cooling system will cool the chip breaker cutting edge when it is working.

[0023] The aforementioned actively adjustable chip breaking and cooling internal turning tool device has mounting screw holes on the motor housing end cover for mounting a belt drive protective cover. The belt drive mechanism housing and the motor housing are connected by outer cover screws to ensure that the transmission system is not affected by chips.

[0024] The aforementioned actively adjustable chip-breaking and cooling internal turning tool device includes a motor housing position adjustment screw and a telescopic hole at the end of the tool shank. The motor housing end cover has a motor fixing screw hole. The motor protective cover and the tool shank are fixedly connected by adjusting the position of the moving shaft on the motor housing within the telescopic hole and then tightening the adjustment screw. The motor and the motor end cover are fixedly connected by hexagonal socket head cap screws. After the motor housing moves back and forth along the telescopic hole of the tool shank to a suitable position, the belt drive mechanism is pre-tensioned by tightening the adjustment screw. The motor is mounted on the motor housing end cover, and the motor protective cover is fixedly connected to the motor through mounting screw holes to isolate and protect the motor.

[0025] The aforementioned actively adjustable chip breaking and cooling internal turning tool device includes a motor connected to a motor housing end cover, with a pre-drilled hole on the motor housing end cover for the motor shaft to pass through, and the motor shaft connected to a small pulley inside the belt drive mechanism housing.

[0026] In the aforementioned actively adjustable chip breaking and cooling internal turning tool device, the motor is a DC motor with controllable speed.

[0027] Furthermore, the chip breaker is made of a metal material with high hardness, such as cemented carbide or high-speed steel.

[0028] The actively adjustable chip breaking and cooling internal turning tool device according to an embodiment of the present invention has the following beneficial effects:

[0029] (1) This invention integrates a chip breaker and a spray cooling device into a composite system for cutting, chip breaking, and cooling the workpiece. The tool holder allows for rapid installation, and the directional adjustment mechanism allows for directional adjustment of the chip breaker, improving cutting efficiency. Reliable chip breaking is ensured without altering the existing shape of the cutting tool, and the position of the chip breaker can be adjusted as needed. The designed tool holder meets the requirements of secure clamping, easy adjustment, and convenient installation of the internal turning tool. It also features a simple structure and good applicability. The bottom of the tool head can be connected to the spray device, and the cooling medium is sprayed from nozzles on the tool head to cool, lubricate, and remove chips from the cutting area.

[0030] (2) The position of the chip breaker in this invention can be adjusted by limiting the position of the front and rear adjusting groove through the front and rear adjusting T-bolts and front and rear adjusting nuts, thereby adjusting the front and rear position of the cutting edge relative to the cutting tool insert. The position of the cutting edge relative to the cutting tool insert can be adjusted by limiting the position of the front and rear adjusting groove through the left and right adjusting T-bolts and left and right adjusting nuts. The position of the chip breaker relative to the cutting tool insert can be adjusted by adjusting the vertical position through the set screw. The front and rear adjustment range is 0–12 mm, the left and right adjustment range is 0–5 mm, and the vertical adjustment range is 0–2 mm, achieving an actively adjustable chip breaker effect that can adapt to changes in cutting parameters and chip size when cutting different workpiece materials.

[0031] (3) The servo motor in this invention drives the chip breaker to rotate rapidly at a speed of 9000 rpm through the belt drive mechanism, thereby breaking the chips. The chip breaker system can work safely in any processing environment.

[0032] (4) In this invention, a coolant flow channel is also provided in the cutter head. A coolant of a certain pressure passes through the coolant flow channel and is finally sprayed out through the nozzle, which plays the role of cooling, lubrication and chip removal.

[0033] (5) The chip breaker and cooling structure of the present invention are easy to install and disassemble, simple to maintain, and have good chip breaking, chip removal and cooling effects. Attached Figure Description

[0034] The above and / or additional aspects and advantages of the embodiments of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0035] Figure 1 The diagram shown is an overall structural diagram of the present invention;

[0036] Figure 2 The diagram shown is a schematic diagram of the tool holder structure of the present invention;

[0037] Figure 3 The diagram shown is a schematic representation of the direction adjustment mechanism of the present invention.

[0038] Figure 4 The diagram shown is a schematic diagram of the transmission shaft system structure of the present invention;

[0039] Figure 5 The diagram shown is a schematic diagram of the belt drive mechanism of the present invention;

[0040] Figure 6 The diagram shown is a schematic diagram of the motor housing structure of the present invention;

[0041] Figure 7 The figure shown is a cross-sectional view of the chip breaker of the present invention;

[0042] Figure 8 The figure shown is a cross-sectional view of the blade structure of the present invention. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] like Figure 1-8 As shown, an actively adjustable chip-breaking and cooling internal turning tool device includes: a tool holder 1, an internal turning tool 2, a chip breaker 3, a belt drive mechanism housing 4, a direction adjustment mechanism 5, a drive shaft system, and a motor housing 6. The motor housing end cover 62 has a motor mounting hole and a pre-drilled hole for a motor shaft 65 to pass through. The motor shaft 65 is connected to a small pulley 41 inside the belt drive mechanism housing 4. The internal turning tool 2 is mounted on the tool holder 1. The direction adjustment mechanism 5 is connected to the belt drive mechanism and is mounted on the upper part of the internal turning tool head 22 to adjust the position of the chip breaker 3. The motor 61 is mounted using hexagon socket screws 64. On the motor housing end cover 62, the motor housing 6 is fixed to the end of the tool bar 21 by the motor housing position adjustment screw 28 and connected to the belt drive mechanism for driving the belt drive mechanism in the belt drive mechanism box 4. The belt drive mechanism protective cover is fixedly connected to the motor housing end cover 62 by the mounting screw hole 63 for isolating and protecting the belt drive mechanism. The direction adjustment mechanism protective cover 59 is fixedly connected to the inner turning tool head 22 by the outer cover screw for isolating and protecting the direction adjustment mechanism 5. The motor protective cover, the belt drive mechanism protective cover and the direction adjustment mechanism protective cover 59 ensure that the motor, transmission system and direction adjustment system are not affected by chips.

[0045] See Figure 2 As shown, the tool holder includes an inner hole tool holder 12 and a fastening bolt 11. The inner hole tool holder 12 is mounted on the machine tool operating table. An inner hole 13 is pre-drilled on the inner hole tool holder 12 for clamping an internal turning tool. The fastening bolt 11 can move up and down along the inner hole tool holder 12. In this embodiment, pressure is applied to the internal turning tool holder 21 by the fastening bolt 11 of the tool holder, thereby achieving the positioning and clamping of the internal turning tool 2 at a suitable location on the inner hole tool holder 12. To reduce harmful vibrations caused by excessive overhang of the tool holder 21 during machining, the tool tip 22 should be clamped as close as possible to the inner hole 13 to shorten the overhang of the tool holder 21.

[0046] See Figure 3As shown, the direction adjustment mechanism has front-to-back and left-to-right adjustment functions. Specifically, it includes a longitudinal slider 56, a front-to-back adjustment slot 561, a transverse slider 57, a left-to-right adjustment slot 571, a lower bushing 53, a front bushing 52, left-to-right adjustment T-bolts 54, and front-to-back adjustment T-bolts 55. The longitudinal slider 56 and the transverse slider 57 are fixedly connected by the front-to-back adjustment T-bolts 55. The front-to-back adjustment of the chip breaker is achieved by clamping and fixing the front-to-back adjustment slot 561 with two front-to-back adjustment T-bolts 55 installed on the longitudinal slider 56 and the transverse slider 57. The lower bushing 53 and the transverse slider 57 are fixedly connected by the left-to-right adjustment T-bolts 54. The left-to-right adjustment of the chip breaker is achieved by clamping and fixing the left-to-right adjustment slot 571 with two left-to-right adjustment T-bolts 54 installed on the transverse slider 57 and the lower bushing 53. Each of the two front-to-back adjustment slots has a 12mm space to facilitate the movement and adjustment of the transverse slider, and the left-to-right adjustment slot has a 5mm space to facilitate the movement of the lower bushing. Two front-to-back adjusting T-bolts 55 are installed on the longitudinal slider 56 and the transverse slider 57. After moving the transverse slider 57 to the appropriate position, tightening the front-to-back adjusting nut will fix the front-to-back position. Two left-to-right adjusting T-bolts 54 are installed on the transverse slider 57 and the lower bushing 53. After moving the lower bushing 53 to the appropriate position, tightening the left-to-right adjusting nut will fix the left-to-right position. The front-to-back position adjustment of the chip breaker is achieved through the following steps: First, loosen the front-to-back adjusting nut; then, move the transverse slider 57 to a suitable position on the front-to-back adjusting slot 561; finally, tighten the front-to-back adjusting nut. The left-to-right position adjustment of the chip breaker is achieved through the following steps: First, loosen the left-to-right adjusting nut; then, move the lower bushing 53 to a suitable position on the left-to-right adjusting slot 571; finally, tighten the left-to-right adjusting nut. Generally, the gap between the bottom of the chip breaker and the cutting tool insert should be controlled to be 1mm.

[0047] See Figure 4 As shown, the drive shaft 51 is mounted in a bearing seat 531 on the lower bushing 53 via two rolling bearings 532 and a retaining ring 533. The gear shaft 525 is mounted in a bearing seat 522 on the front bushing 52 via a rolling bearing 523 and a retaining ring 524. The chip breaker drive shaft 32 is connected to the gear shaft 525. Power is transmitted between the drive shaft 51, the gear shaft 525, and the chip breaker drive shaft 32 via bevel gears.

[0048] See Figure 5 As shown, the belt drive mechanism includes a small pulley 41 and a large pulley 43. The small pulley 41 is connected to the motor shaft 65 of the motor by a set screw, and the large pulley 43 is connected to the transmission shaft 51 by a set screw. The small pulley 41 and the large pulley 43 are connected by a belt 42. In this embodiment, the transmission ratio of the transmission mechanism is 1:2.

[0049] See Figure 6 As shown, the motor 61 is fixedly connected to the motor housing end cover 62 by an internal hexagon screw 64. The end of the internal turning tool bar 21 is provided with a telescopic hole 29 and an adjusting screw 28. The moving shaft on the motor housing is installed in the telescopic hole. After the moving shaft moves back and forth along the telescopic hole 29 of the tool bar to a suitable position, the adjusting screw 28 is tightened to realize the fixation of the motor housing and the pre-tensioning of the belt drive mechanism. The motor housing end cover is provided with a motor fixing screw hole, and the motor 61 is mounted on the motor housing end cover 62.

[0050] Specifically, motor 61 is a DC motor with controllable speed, and chip breaker 3 is made of a high-hardness metal material, such as cemented carbide or high-speed steel. Through a belt drive mechanism and drive shaft system, chip breaker 3 rotates rapidly at 9000 rpm, thereby breaking the chips. There is a 1 mm gap between the cutting edge 31 in the chip breaker system and the cutting tool insert to ensure safe operation of the chip breaker system in any machining environment.

[0051] See Figure 7 As shown, the chip breaker drive shaft 32 is mounted on a rolling bearing 33 and a retaining ring 34 in a bearing housing 521 on the front bushing 52. The chip breaker 3 is connected to the chip breaker drive shaft 32 by a set screw. The bottom of the chip breaker is the cutting edge 31. After the chip breaker is moved up and down along the chip breaker drive shaft 32 to a suitable height position, the cutting edge is fixed by tightening the set screw.

[0052] Specifically, the chip breaker cutting edge 31 has a specially designed shape so that it will not affect the normal operation of the spray cooling system when rotating at high speed, and the spray cooling system will cool the chip breaker cutting edge 31 when it is working.

[0053] See Figure 8 As shown, the internal turning tool 2 includes a tool head 22, a cutting edge 23, a tool pad 25, and a nozzle 24. The cutting edge 23 and the tool pad 25 are fixed to the cutting edge mounting groove on the tool head 22 by clamping screws 26. The cutting edge 23 is mounted above the tool pad 25. The nozzle 24 is threadedly connected to the tool head 22, and the nozzle outlet is aligned with the cutting edge. A spray cooling interface 221 is provided on the bottom surface of the tool head 22 to introduce cooling medium. A coolant flow channel 222 is provided inside the nozzle 24. A sealing ring 223 is installed at the connection between the coolant flow channel in the tool head and the coolant flow channel in the nozzle to prevent coolant leakage. An external spray cooling system delivers the cooling medium to the spray cooling interface 221, and then sprays it onto the cutting area through the coolant flow channel 222 in the nozzle 24 to achieve the functions of cooling, lubrication, chip blowing, and chip removal. The external cooling device and the spray cooling interface 221 inside the internal turning tool 2 are sealed with PTFE tape to prevent cooling medium leakage.

[0054] In summary, the internal turning tool device with active adjustable chip breaking and cooling provided by the present invention has the following advantages:

[0055] Beneficial effects:

[0056] (1) This invention integrates a chip breaker and a spray cooling device into a composite system for cutting, chip breaking, and cooling the workpiece. The tool holder allows for rapid installation, and the directional adjustment mechanism allows for directional adjustment of the chip breaker, improving cutting efficiency. Reliable chip breaking is ensured without altering the existing shape of the cutting tool, and the position of the chip breaker can be adjusted as needed. The designed tool holder meets the requirements of secure clamping, easy adjustment, and convenient installation of the internal turning tool. It also features a simple structure and good applicability. The bottom of the tool head can be connected to the spray device, and the cooling medium is sprayed from nozzles on the tool head to cool, lubricate, and remove chips from the cutting area.

[0057] (2) The position of the chip breaker in this invention can be adjusted by limiting the position of the front and rear adjusting groove through the front and rear adjusting T-bolts and front and rear adjusting nuts, thereby adjusting the front and rear position of the cutting edge relative to the cutting tool insert. The position of the cutting edge relative to the cutting tool insert can be adjusted by limiting the position of the front and rear adjusting groove through the left and right adjusting T-bolts and left and right adjusting nuts. The position of the chip breaker relative to the cutting tool insert can be adjusted by adjusting the vertical position through the set screw. The front and rear adjustment range is 0–12 mm, the left and right adjustment range is 0–5 mm, and the vertical adjustment range is 0–2 mm, achieving an actively adjustable chip breaker effect that can adapt to changes in cutting parameters and chip size when cutting different workpiece materials.

[0058] (3) The servo motor in this invention drives the chip breaker to rotate rapidly at a speed of 9000 rpm through the belt drive mechanism, thereby breaking the chips. The chip breaker system can work safely in any processing environment.

[0059] (4) In this invention, a coolant flow channel is also provided in the cutter head. A coolant of a certain pressure passes through the coolant flow channel and is finally sprayed out through the nozzle, which plays the role of cooling, lubrication and chip removal.

[0060] (5) The chip breaker and cooling structure of the present invention are easy to install and disassemble, simple to maintain, and have good chip breaking, chip removal and cooling effects.

[0061] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An active adjustable chip breaking and cooling device for internal turning tools, characterized in that, include: Knife holder (1); An internal turning tool (2) is mounted on a tool holder (1). Chip breaker (3), which is connected to the drive shaft system; The belt drive mechanism box (4) contains a belt drive mechanism; The direction adjustment mechanism (5) is installed on the head of the internal turning tool (2) and is used to adjust the position of the chip breaker (3); The motor housing (6) is fixed to the end of the inner round cutting tool (2) and connected to the belt drive mechanism for driving the belt drive mechanism; The direction adjustment mechanism (5) includes a longitudinal slider (56), a front-to-back adjustment slot (561), a transverse slider (57), a left-to-right adjustment slot (571), a lower bushing (53), a front bushing (52), a left-to-right adjustment T-bolt (54), and a front-to-back adjustment T-bolt (55). The longitudinal slider (56) and the transverse slider (57) are nested on the front-to-back adjustment T-bolt (55). The front-to-back adjustment T-bolt (55) can move back and forth along the front-to-back adjustment slot (561). The lower bushing (53) and the transverse slider (57) are nested on the left-to-right adjustment T-bolt (54). The left-to-right adjustment T-bolt (54) can move left and right along the left-to-right adjustment slot (571). The front bushing (52) and the lower bushing (53) are fixedly connected by countersunk screws (58). The internal turning tool (2) includes a tool holder (21), a cutting tool (23), a nozzle (24), and a tool pad (25). The end of the tool holder (21) is a tool head (22). A coolant flow channel (222) is provided inside the tool head (22). A sealing ring (223) is installed at the connection between the coolant flow channel inside the tool head and the coolant flow channel inside the nozzle. The tool holder (21) is located inside the tool holder (1). A cutting tool mounting groove is provided on the tool head (22). The cutting tool (23) and the tool pad (25) are fixed in the cutting tool mounting groove by a clamping screw (26). The nozzle (24) is located at the end of the longitudinal slider (56) and is connected to the tool head (22) by a first internal hexagonal screw (27). The nozzle (24) outlet is aligned with the tool tip. A spray cooling interface (221) is provided on the bottom surface of the tool head (22). The tool holder (1) includes a fastening bolt (11) and an inner hole tool holder (12). The inner hole tool holder (12) has an inner hole (13) reserved for clamping an internal turning tool. The fastening bolt (11) is used to fix the internal turning tool (2). The inner hole tool holder (12) has a mounting hole. The inner hole tool holder (12) can be installed on the machine tool operating table. The belt drive mechanism includes a small pulley (41) and a large pulley (43). The small pulley (41) is connected to the motor shaft (65) of the motor housing (6) by a set screw. The large pulley (43) is connected to the drive shaft (51) by a set screw. The other end of the drive shaft (51) is fixedly connected to a direction adjustment mechanism (5). The small pulley (41) and the large pulley (43) are connected by a belt (42).

2. The internal turning tool device with active adjustable chip breaking and cooling according to claim 1, characterized in that, The cutter head (22) is provided with mounting screw holes, and the protective cover (59) of the direction adjustment mechanism is fixedly connected to the cutter head (22) by the outer cover screw.

3. The internal turning tool device with active adjustable chip breaking and cooling according to claim 2, characterized in that, The drive shaft (51) is mounted in the first bearing seat (531) on the lower bushing (53) via the first rolling bearing (532) and the first hole retaining ring (533). The gear shaft (525) is mounted in the second bearing seat (522) on the front bushing (52) via the second rolling bearing (523) and the second hole retaining ring (524). The chip breaker drive shaft (32) is mounted in the third bearing seat (521) on the front bushing (52) via the third rolling bearing (33) and the third hole retaining ring (34). The chip breaker (3) is connected to the chip breaker drive shaft (32) by screws. The gear shaft (525) transmits power to the chip breaker drive shaft (32) to power the chip breaker.

4. The internal turning tool device with active adjustable chip breaking and cooling according to claim 3, characterized in that, The motor housing end cover (62) has mounting screw holes (63) for mounting the belt drive protective cover. The belt drive mechanism housing (4) and the motor housing (6) are connected by outer cover screws.

5. The actively adjustable chip breaking and cooling internal turning tool device according to claim 4, characterized in that, The end of the tool bar (21) is provided with a motor housing position adjustment screw (28) and a telescopic hole (29). The motor housing end cover (62) is provided with a motor fixing screw hole. The motor protective cover (66) and the tool bar (21) are fixedly connected by adjusting the position of the moving shaft on the motor housing in the telescopic hole and tightening the adjustment screw (28). The motor (61) and the motor housing end cover (62) are fixedly connected by a second internal hex screw (64).

6. The internal turning tool device with active adjustable chip breaking and cooling according to claim 5, characterized in that, The motor (61) is connected to the motor housing end cover (62). The motor housing end cover (62) has a reserved through hole for the motor shaft (65) to pass through. The motor shaft (65) is connected to the small pulley (41) inside the belt drive mechanism housing (4).

7. The internal turning tool device with active adjustable chip breaking and cooling according to claim 6, characterized in that, The motor (61) is a DC motor with controllable speed.

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