A turning device for machining the ring groove of the piston head of a low-speed engine

Abstract

The present invention discloses a turning device for processing a ring groove of a piston head of a low-speed machine, the turning device comprising: an X-axis module arranged on a machine platform, a Z-axis module arranged on the X-axis module, a transparent chip guide cover arranged on the Z-axis module through a bracket, and a turning rotary device arranged on the transparent chip guide cover near the Z-axis module; the transparent chip guide cover is provided with an arc-shaped chip feed opening on the side facing the piston head body, a telescopic transmission shaft is provided at the output end of the turning rotary device, one end of the telescopic transmission shaft penetrates through one side of the transparent chip guide cover and is connected to a cutter head, and a connecting component for sealing the arc-shaped chip feed opening and the outer wall of the piston head body is provided on the transparent chip guide cover. The technical solution contacts the outer wall of the piston head body through the arc-shaped chip feed opening in the transparent chip guide cover, and seals the connection between the arc-shaped chip feed opening and the outer wall of the piston head body through the connecting component, thereby limiting the discharge of debris generated during turning through the chip discharge opening of the transparent chip guide cover, and debris splashing is not easy to occur.

Description

Technical Field

[0001] The invention relates to the technical field of piston head processing, in particular to a turning device for processing a ring groove of a piston head of a low-speed machine. Background Art

[0002] A low-speed engine, or low-speed diesel engine, has a piston head, one of the three major moving parts of a diesel engine and one of the parts with the most demanding working conditions. Currently, the piston head of a low-speed engine requires a turning device to machine a ring groove on its outer wall so that the piston head seal can be later assembled in the ring groove. Existing turning devices use a turning tool to turn the rotating piston head, which generates a large amount of debris during turning. The debris usually splashes onto the machine tool, piston head, and turning tool equipment, not only increasing the difficulty of cleaning and collecting the debris later, but also easily causing damage to the equipment or physical injury to the operator due to the splashing debris. To this end, we propose a turning device for machining the ring groove of the piston head of a low-speed engine. Summary of the Invention

[0003] The purpose of the present invention is to provide a turning device for processing the ring groove of the piston head of a low-speed engine, so as to solve the problem that the turning device proposed in the above background technology will generate a lot of debris when turning the piston head. The debris will usually splash onto the machine tool, piston head and turning tool equipment, which not only increases the difficulty of cleaning and collecting the debris in the later stage, but also easily causes damage to the equipment or causes physical injury to the operator due to the splashing of debris.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A turning device for machining a ring groove of a piston head of a low-speed engine, used for machining a piston head body, the turning device comprising a machine platform, a rotating device mounted on the machine platform, and a fixture mounted at the output end of the rotating device for clamping the piston head body, further comprising: an X-axis module mounted on the machine platform, a Z-axis module mounted on the X-axis module, a transparent chip guide cover mounted on the Z-axis module via a bracket, and a turning and rotating device mounted on the side of the transparent chip guide cover close to the Z-axis module;

[0006] The transparent chip guide cover is provided with an arc-shaped chip feed port that fits with the circumferential outer wall of the piston head body on the side facing the piston head body. The output end of the turning rotation equipment is provided with a telescopic transmission shaft. One end of the telescopic transmission shaft passes through one side of the transparent chip guide cover and is connected to a cutter head. The cutter head is located in the transparent chip guide cover and corresponds to the arc-shaped chip feed port. A chip discharge port is provided at the bottom of the transparent chip guide cover. The transparent chip guide cover is provided with a connecting component for sealing the arc-shaped chip feed port and the outer wall of the piston head body.

[0007] A further improvement is that the connecting assembly includes two groups of sliders arranged on the outer wall of the transparent chip guide cover and respectively located at the upper and lower ends of the arc-shaped chip feed port, and two groups of rings arranged on the outer wall of the piston head main body, and the two groups of rings are provided with annular grooves on the opposite sides, and the opposite ends of the two groups of sliders are respectively embedded in the two groups of grooves, and the vertical cross-section of the slider is T-shaped, and the inner wall of the ring is provided with an airbag component, and the air inlet of the airbag component is connected with the air supply part, and the air supply part is provided in the transparent chip guide cover, and one end of the transparent chip guide cover and the front and rear ends of the arc-shaped chip feed port are embedded with contact rollers that fit with the outer wall of the piston head main body.

[0008] A further improvement is that a partition is provided in the inner cavity of the transparent chip guide cover near the Z-axis module, and the partition divides the inner cavity of the transparent chip guide cover into a chip removal chamber and a power chamber from left to right. The arc-shaped chip feed port and the chip removal port are both connected to the chip removal chamber, and the air supply portion is provided in the power chamber.

[0009] The telescopic transmission shaft includes a sleeve, a movable column and a telescopic device;

[0010] One end of the sleeve is connected to the output end of the rotating device, and the other end passes through the side wall of the transparent chip guide cover and extends into the power cavity. A blind hole is provided at the other end of the sleeve for the movable column to be inserted, and a plurality of groups of grooves are provided on the inner wall of the blind hole in a circular array. A protrusion is provided on the outer wall of one end of the movable column to match the groove, and the other end passes through the partition and extends into the chip removal cavity. A connecting ring is provided on the outer wall of one end of the movable column close to the sleeve through a bearing movable sleeve. One end of the telescopic device is connected to the inner wall of the power cavity, and the other end is connected to the connecting ring.

[0011] A further improvement is that the air supply part includes a driving gear, a driven gear 1, an air guide seat, an induced draft fan blade and a connecting air pipe;

[0012] Among them, the driving gear is sleeved on one end of the movable column close to the sleeve, the driven gear is arranged in the power cavity through the rotation of the shaft and is located below the driving gear, for cooperating with the driving gear, the air guide seat is arranged in the power cavity and is located below the driven gear, the air inlet end of the air guide seat passes through the transparent chip guide cover, the air guide seat is provided with an induced fan blade, the blade shaft of the induced fan blade passes through one side of the air guide seat and is provided with a linkage gear engaged with the driven gear, the air outlet end of the air guide seat is connected to two groups of connecting air pipes, the two groups of connecting air pipes both pass through the outer wall of the transparent chip guide cover and are detachably connected to the air inlets of the two groups of airbag parts respectively.

[0013] A further improvement is that a liquid storage shell is provided at the bottom of the transparent chip guide cover, a chip feed port connected to the chip discharge port is provided at the top of the liquid storage shell, a liquid storage cavity connected to the chip feed port is provided in the inner cavity of the liquid storage shell, a filter screen and a water supply part are detachably provided in the liquid storage cavity, and a debris crushing part is provided in the chip feed port.

[0014] A further improvement is that the water supply unit includes a second driven gear, a drive shaft, a pump body, a diverter pipe and a nozzle;

[0015] The driven gear 2 has the same diameter as the driven gear 1 and is arranged in the power cavity through rotation of the shaft. The driven gear 2 is located on the side of the driven gear 1 facing the arc-shaped chip feed port. One end of the driving shaft is placed in the power cavity and below the driven gear 2, and the other end passes through the partition and the side wall of the transparent chip guide cover and is connected to the power end of the pump body. The end of the driving shaft placed in the power cavity is sleeved with a linkage gear 2 that meshes with the driven gear 2. The pump body is arranged on the outer wall of the transparent chip guide cover through a bracket. The water inlet end of the pump body is connected to the liquid storage cavity through a water suction pipe, and the water outlet end of the pump body is connected to the diversion pipe through a pipeline. The diversion pipe is arranged on the top of the transparent chip guide cover. There are multiple groups of nozzles, all of which are tilted in the transparent chip guide cover and above the cutter head. The nozzle is connected to the diversion pipe and the water outlet faces the arc-shaped chip feed port.

[0016] A further improvement is that the debris crushing unit includes a crushing roller, a gear set and a sprocket transmission set;

[0017] There are two groups of crushing rollers, which are symmetrically arranged in the inner cavity of the chip inlet. The roller shafts of the two groups of crushing rollers pass through one side of the liquid storage shell and are connected by a gear set.

[0018] The roller shaft of one group of the crushing rollers is connected to one end of the driving shaft located outside the transparent chip guide cover through a sprocket transmission group.

[0019] A further improvement is that the length of the driven gear 2 is greater than that of the driven gear 1. When the driving gear is engaged with the driven gear 1, the cutter head is located in the transparent chip guide cover. When the driving gear is engaged with the driven gear 2, the cutter head is located in the arc-shaped chip feed port.

[0020] A further improvement is that a protective sleeve is provided on the outer wall movable sleeve of the driving shaft, and the protective sleeve is arranged in the chip removal chamber.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] When in use, this technical solution contacts the outer wall of the piston head body through the arc-shaped chip feed port in the transparent chip guide cover, and at the same time seals the connection between the arc-shaped chip feed port and the outer wall of the piston head body through the connecting component, so that the contact position between the cutter head and the piston head body is in a relatively closed space, thereby limiting the discharge of debris generated during turning through the chip discharge port of the transparent chip guide cover, and preventing debris from splashing, which makes it difficult to clean and collect later, and is prone to damage to the equipment or physical injury to the operator due to chip splashing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 Schematic diagram of the transparent chip guide cover structure of the present invention;

[0025] Figure 3 Schematic diagram of the connection assembly structure in the present invention;

[0026] Figure 4 For the present invention Figure 2 Structural cross-section view;

[0027] Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure in the middle.

[0028] In the figure: 1. Piston head body; 2. Machine table; 3. Rotating device; 4. Fixture; 5. X-axis module; 6. Z-axis module; 7. Turning rotary device; 8. Transparent chip guide cover; 9. Arc-shaped chip feed port; 10. Telescopic transmission shaft; 101. Sleeve; 102. Movable column; 11. Cutter head; 12. Contact roller; 13. Collar; 14. Slider; 15. Airbag component; 16. Partition; 17. Telescopic device; 18. Driving gear; 19. Driven gear 1; 20. Air guide seat; 21. Induced fan blade; 22. Connecting air pipe; 23. Driven gear 2; 24. Drive shaft; 25. Protective sleeve; 26. Pump body; 27. Liquid storage shell; 28. Filter screen; 29. ​​Gear group; 30. Crushing roller; 31. Sprocket transmission group; 32. Diverter pipe; 33. Nozzle; 34. Water extraction pipe. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Example 1

[0031] See also Figure 1 A turning device for processing annular grooves on a piston head of a low-speed engine is used to process a piston head main body 1. The turning device includes a machine table 2, a rotating device 3 provided on the machine table 2, and a clamp 4 provided at the output end of the rotating device 3 for clamping the piston head main body 1; after the piston head main body 1 is clamped by the clamp 4, when the annular groove is processed on the outer wall of the piston head main body 1, the piston head main body 1 can be rotated by driving the clamp 4 through the rotating device 3.

[0032] See also Figure 2-3, and also includes: an X-axis module 5 provided on the machine table 2, a Z-axis module 6 provided on the X-axis module 5, a transparent chip guide cover 8 provided on the Z-axis module 6 through a bracket, and a turning rotation device 7 provided on the side of the transparent chip guide cover 8 close to the Z-axis module 6; the X-axis module 5 and the Z-axis module 6 both belong to the existing technology, for example, include a guide rail, a screw provided in the guide rail, a slide seat provided on the outer wall of the screw and slidingly located in the guide rail, and a servo motor for driving the screw to rotate, etc., which are used to adjust the left and right position and the up and down position of the transparent chip guide cover 8.

[0033] The transparent chip guide cover 8 is provided with an arc-shaped chip feed port 9 that fits with the circumferential outer wall of the piston head main body 1 on the side facing the piston head main body 1. The output end of the turning rotary device 7 is provided with a telescopic transmission shaft 10. One end of the telescopic transmission shaft 10 passes through one side of the transparent chip guide cover 8 and is connected to a cutter head 11. The cutter head 11 is located in the transparent chip guide cover 8 and corresponds to the arc-shaped chip feed port 9. A chip discharge port is provided at the bottom of the transparent chip guide cover 8. The transparent chip guide cover 8 is provided with a connecting component for sealing the arc-shaped chip feed port 9 and the outer wall of the piston head main body 1. Through this arrangement, when the turning rotary device 7 drives the telescopic transmission shaft 10 to drive the cutter head 11 to rotate to perform annular groove processing on the outer wall of the piston head main body 1, the generated debris enters the transparent chip guide cover 8 through the arc-shaped chip feed port 9 and is then discharged from the chip discharge port. The debris from the turning annular groove is restricted from entering the transparent chip guide cover 8 by the connecting component.

[0034] Preferably, the connecting assembly of this embodiment includes two groups of sliders 14 provided on the outer wall of the transparent chip guide cover 8 and respectively located at the upper and lower ends of the arc-shaped chip feed port 9, and two groups of rings 13 sleeved on the outer wall of the piston head body 1. The two groups of rings 13 are provided with annular grooves on the opposite sides, and the opposite ends of the two groups of sliders 14 are respectively embedded in the two groups of grooves. The vertical cross-section of the slider 14 is T-shaped so that the two sets of rings 13 can be driven to move synchronously when the transparent chip guide cover 8 moves up and down. The diameter of the ring 13 is larger than the diameter of the piston head main body 1; the inner wall of the ring 13 is provided with an airbag member 15, and the airbag member 15 preferably adopts the annular rubber airbag with an anti-cutting effect widely used in the prior art. After inflation, the ring 13 is in close contact with the piston head main body 1, and then when the piston head main body 1 rotates, the ring 13 can be rotated synchronously, and it is ensured that debris is not easy to fall out from the connection between the arc-shaped chip feed port 9 and the piston head main body 1; the air inlet of the airbag member 15 is connected with the air supply portion, which is arranged in the transparent chip guide cover 8. One end of the transparent chip guide cover 8 and the position at the front and rear ends of the arc-shaped chip feed port 9 are embedded with contact rollers 12 that fit the outer wall of the piston head main body 1. On the one hand, the sealing between the arc-shaped chip feed port 9 and the piston head main body 1 is improved by the arrangement of the contact roller 12, and on the other hand, the piston head main body 1 will not cause wear to the arc-shaped chip feed port 9 when rotating.

[0035] See also Figure 4-5As a preference, a partition 16 is provided in the inner cavity of the transparent chip guide cover 8 of this embodiment near the Z-axis module 6. The partition 16 divides the inner cavity of the transparent chip guide cover 8 into a chip removal chamber and a power chamber from left to right. The arc-shaped chip feed port 9 and the chip removal port are both connected to the chip removal chamber. The air supply portion is arranged in the power chamber. The partition 16 prevents the chips entering from the arc-shaped chip feed port 9 from interfering with the air supply portion.

[0036] The telescopic transmission shaft 10 comprises a sleeve 101 , a movable column 102 and a telescopic device 17 ;

[0037] One end of the sleeve 101 is connected to the output end of the rotating device 3, and the other end passes through the side wall of the transparent chip guide cover 8 and extends into the power chamber. A blind hole is opened at the other end of the sleeve 101 for the insertion of the movable column 102. The inner wall of the blind hole is provided with multiple groups of grooves in a circular array. The outer wall of one end of the movable column 102 is provided with a protrusion that adapts to the groove. The other end passes through the partition 16 and extends into the chip removal chamber. Through this arrangement, the sleeve 101 can drive the movable column 102 when rotating, and the movable column 102 can move relative to the sleeve 101. The outer wall of the movable column 102 near the sleeve 101 is provided with a connecting ring through a bearing sleeve. One end of the telescopic device 17 is connected to the inner wall of the power chamber, and the other end is connected to the connecting ring. The telescopic device 17 can drive the movable column 102 to move relative to the sleeve 101.

[0038] As a preference, the air supply portion of this embodiment includes a driving gear 18, a driven gear 19, an air guide seat 20, an induced draft fan blade 21 and a connecting air pipe 22;

[0039] Among them, the driving gear 18 is sleeved on one end of the movable column 102 close to the sleeve 101, and the driven gear 19 is arranged in the power cavity through the rotation of the shaft and is located below the driving gear 18, for cooperating with the driving gear 18, and the air guide seat 20 is arranged in the power cavity and is located below the driven gear 19. The air inlet end of the air guide seat 20 passes through the transparent chip guide cover 8. The air inlet end of the air guide seat 20 can be equipped with a filter in actual conditions. The air guide seat 20 is provided with an induced fan blade 21, which guides the air. The blade shaft of the fan blade 21 passes through one side of the air guide seat 20 and is provided with a linkage gear 1 that meshes with the driven gear 19. The air outlet end of the air guide seat 20 is connected to two sets of connecting air pipes 22. The two sets of connecting air pipes 22 both pass through the outer wall of the transparent chip guide cover 8 and are detachably connected to the air inlets of the two sets of airbag components 15 respectively. The connecting air pipes 22 and the air inlets of the airbag components 15 can be connected by a pipe connector, and a one-way valve can be set in the air inlet of the airbag component 15 or an independent sealing cover can be used to seal it. Through this arrangement, the telescopic device 17 drives the movable column 102 to move, so that the driving gear 18 and the driven gear 19 are engaged. When the movable column 102 rotates, the driven gear 19 is driven by the driving gear 18, and the driven gear 19 drives the linkage gear 1, thereby causing the fan blades 21 to rotate in the air guide seat 20 to introduce external air into the air guide seat 20. The gas then enters the airbag component 15 through the connecting air pipe 22, causing the airbag component 15 to expand and adhere to the outer wall of the piston head body 1. Subsequently, the connecting air pipe 22 and the airbag component 15 are removed, and the air inlet of the airbag component 15 is sealed before turning work can be carried out.

[0040] Preferably, the transparent chip guide cover 8 of this embodiment has a liquid reservoir housing 27 at its bottom, a chip inlet opening communicating with the chip removal opening at its top, and a liquid reservoir cavity communicating with the chip inlet opening within the liquid reservoir housing 27. A removable filter screen 28 and a water supply are provided within the liquid reservoir cavity, and a chip crushing unit is provided within the chip inlet opening. This arrangement allows turning chips to enter the liquid reservoir cavity of the liquid reservoir housing 27, which is then filled with an appropriate amount of liquid.

[0041] As an example, the water supply unit of this embodiment includes a driven gear 23, a drive shaft 24, a pump body 26, a diverter pipe 32 and a nozzle 33;

[0042] Among them, the driven gear 23 has the same diameter as the driven gear 19 and is rotated in the power cavity through the shaft. The driven gear 23 is located on the side of the driven gear 19 facing the arc-shaped chip inlet 9. One end of the drive shaft 24 is placed in the power cavity and below the driven gear 23. The other end passes through the partition 16 and the side wall of the transparent chip guide cover 8 and is connected to the power end of the pump body 26. The outer wall of the drive shaft 24 is movably sleeved with a protective sleeve 25. The protective sleeve 25 is located in the chip removal cavity. The drive shaft 24 One end placed in the power chamber is provided with a linkage gear 2 that meshes with the driven gear 23. The pump body 26 is arranged on the outer wall of the transparent chip guide cover 8 through a bracket. The water inlet end of the pump body 26 is connected to the liquid storage chamber through a water suction pipe 34. The water outlet end of the pump body 26 is connected to the diversion pipe 32 through a pipeline. The diversion pipe 32 is arranged on the top of the transparent chip guide cover 8. There are multiple groups of nozzles 33, all of which are inclined in the transparent chip guide cover 8 and located above the cutter head 11. The nozzle 33 is connected to the diversion pipe 32 and the water outlet faces the arc-shaped chip feed port 9. Through this arrangement, the telescopic device 17 drives the movable column 102 to move, so that the driving gear 18 and the driven gear 2 23 engage with each other. When the movable column 102 rotates, the driven gear 2 23 is driven by the driving gear 18, and the driven gear 2 23 drives the linkage gear 2, thereby making the pump body 26 work. The pump body 26 draws the liquid in the liquid storage chamber to the diversion pipe 32 through the suction pipe 34 and sprays it from the nozzle 33. On the one hand, the liquid spraying cools the tool head 11 and the processing part of the piston head body 1 during turning, and on the other hand, the debris generated during processing enters the chip removal chamber with the water flow.

[0043] Preferably, the debris crushing unit of this embodiment includes a crushing roller 30, a gear set 29 and a sprocket transmission set 31;

[0044] There are two groups of crushing rollers 30, which are symmetrically arranged in the inner cavity of the chip inlet. The roller shafts of the two groups of crushing rollers 30 pass through one side of the liquid storage shell 27 and are connected by a gear set 29. The gear set 29 is two groups of meshing gears, which are used to make the two groups of crushing rollers 30 rotate in opposite directions. The debris enters the chip inlet and is crushed by the two groups of crushing rollers 30, which facilitates the collection and processing of the debris in the later stage.

[0045] The roller shaft of one group of crushing rollers 30 is connected to the end of the drive shaft 24 located outside the transparent chip guide cover 8 through a sprocket transmission group 31. The sprocket transmission group 31 consists of a sprocket and a chain. When the drive shaft 24 rotates, the sprocket transmission group 31 drives one group of crushing rollers 30 to rotate.

[0046] The length of the driven gear 23 is greater than that of the driven gear 19. This arrangement increases the contact range between the driving gear 18 and the driven gear 2 23, thereby facilitating the control of the position of the cutter head 11 and achieving the adjustment of the depth of the annular groove during turning.

[0047] When the driving gear 18 is engaged with the driven gear 1 19, the cutter head 11 is in the transparent chip guide cover 8. In this state, the cutter head 11 will not contact the outer wall of the piston head body 1, and thus will not turn out an annular groove; when the driving gear 18 is engaged with the driven gear 2 23, the cutter head 11 is located in the arc-shaped chip feed port 9. In this state, the cutter head 11 contacts the outer wall of the piston head body 1, and thus turns out an annular groove.

[0048] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A turning device for machining a ring groove of a piston head of a low-speed engine, used for machining a piston head body (1), the turning device comprising a machine table (2), a rotating device (3) arranged on the machine table (2), and a clamp (4) arranged at the output end of the rotating device (3) for clamping the piston head body (1), characterized in that: Also includes: An X-axis module (5) arranged on the machine table (2), a Z-axis module (6) arranged on the X-axis module (5), a transparent chip guide cover (8) arranged on the Z-axis module (6) via a bracket, and a turning rotating device (7) arranged on a side of the transparent chip guide cover (8) close to the Z-axis module (6); The transparent chip guide cover (8) is provided with an arc-shaped chip feed opening (9) which is in contact with the circumferential outer wall of the piston head body (1) on one side thereof facing the piston head body (1); a telescopic transmission shaft (10) is provided at the output end of the turning rotary device (7); one end of the telescopic transmission shaft (10) passes through one side of the transparent chip guide cover (8) and is connected to a cutter head (11); the cutter head (11) is located in the transparent chip guide cover (8) and corresponds to the arc-shaped chip feed opening (9); a chip discharge opening is provided at the bottom of the transparent chip guide cover (8); and a connecting component for sealing the arc-shaped chip feed opening (9) and the outer wall of the piston head body (1) is provided on the transparent chip guide cover (8); The connecting component comprises two groups of sliders (14) arranged on the outer wall of the transparent chip guide cover (8) and respectively located at the upper and lower ends of the arc-shaped chip feed port (9) and two groups of rings (13) sleeved on the outer wall of the piston head body (1), the two groups of rings (13) are provided with annular grooves on the opposite sides, and the opposite ends of the two groups of sliders (14) are respectively embedded in the two groups of grooves, the vertical section of the slider (14) is T-shaped, the inner wall of the ring (13) is provided with an airbag component (15), the air inlet of the airbag component (15) is connected to the air supply part, and the air supply part is arranged in the transparent chip guide cover (8), and one end of the transparent chip guide cover (8) and located at the front and rear ends of the arc-shaped chip feed port (9) are embedded with a contact roller (12) that fits the outer wall of the piston head body (1).

2. A turning device for machining a ring groove of a piston head of a low-speed engine according to claim 1, characterized in that: A partition (16) is provided at a position of the inner cavity of the transparent chip guide cover (8) close to the Z-axis module (6), and the partition (16) divides the inner cavity of the transparent chip guide cover (8) into a chip removal cavity and a power cavity from left to right in sequence, the arc-shaped chip feed port (9) and the chip removal port are both connected to the chip removal cavity, and the air supply portion is arranged in the power cavity; The telescopic transmission shaft (10) comprises a sleeve (101), a movable column (102) and a telescopic device (17); One end of the sleeve (101) is connected to the output end of the rotating device (3), and the other end passes through the side wall of the transparent chip guide cover (8) and extends into the power chamber. A blind hole is provided at the other end of the sleeve (101) for the movable column (102) to be inserted. The inner wall of the blind hole is provided with a plurality of groups of grooves in a circular array. A protrusion matching the groove is provided on the outer wall of one end of the movable column (102), and the other end passes through the partition (16) and extends into the chip removal chamber. A connecting ring is provided on the outer wall of one end of the movable column (102) close to the sleeve (101) through a bearing movable sleeve. One end of the telescopic device (17) is connected to the inner wall of the power chamber, and the other end is connected to the connecting ring.

3. A turning device for machining a ring groove of a piston head of a low-speed engine according to claim 2, characterized in that: The air supply part comprises a driving gear (18), a driven gear (19), an air guide seat (20), an air induced fan blade (21) and a connecting air pipe (22); The driving gear (18) is sleeved on one end of the movable column (102) close to the sleeve (101); the driven gear (19) is rotatably arranged in the power cavity through the shaft and is located below the driving gear (18) for cooperating with the driving gear (18); the air guide seat (20) is arranged in the power cavity and is located below the driven gear (19); the air inlet end of the air guide seat (20) passes through the transparent chip guide cover (8); an induced draft fan blade (21) is arranged in the air guide seat (20); the blade shaft of the induced draft fan blade (21) passes through one side of the air guide seat (20) and is provided with a linkage gear (1) meshing with the driven gear (19); the air outlet end of the air guide seat (20) is connected with two groups of connecting air pipes (22); the two groups of connecting air pipes (22) both pass through the outer wall of the transparent chip guide cover (8) and are detachably connected to the air inlets of the two groups of airbag components (15).

4. A turning device for machining a ring groove of a piston head of a low-speed engine according to claim 3, characterized in that: The bottom of the transparent chip guide cover (8) is provided with a liquid storage shell (27), the top of the liquid storage shell (27) is provided with a chip feed port connected to the chip discharge port, the inner cavity of the liquid storage shell (27) is provided with a liquid storage cavity connected to the chip feed port, a filter screen (28) and a water supply part are detachably provided in the liquid storage cavity, and a chip crushing part is provided in the chip feed port.

5. A turning device for machining a ring groove of a piston head of a low-speed engine according to claim 4, characterized in that: The water supply part comprises a second driven gear (23), a drive shaft (24), a pump body (26), a diverter pipe (32) and a nozzle (33); The driven gear 2 (23) has the same diameter as the driven gear 1 (19) and is rotatably arranged in the power cavity through an axis. The driven gear 2 (23) is located on the side of the driven gear 1 (19) facing the arc-shaped chip inlet (9). One end of the drive shaft (24) is placed in the power cavity and below the driven gear 2 (23). The other end passes through the partition (16) and the side wall of the transparent chip guide cover (8) and is connected to the power end of the pump body (26). The end of the drive shaft (24) placed in the power cavity is sleeved with a gear meshing with the driven gear 2 (23). The pump body (26) is arranged on the outer wall of the transparent chip guide cover (8) through a bracket, the water inlet end of the pump body (26) is connected to the liquid storage chamber through a water suction pipe (34), the water outlet end of the pump body (26) is connected to the diverter pipe (32) through a pipeline, the diverter pipe (32) is arranged on the top of the transparent chip guide cover (8), and the nozzle (33) is provided with a plurality of groups, which are all inclinedly arranged in the transparent chip guide cover (8) and located above the cutter head (11), and the nozzle (33) is connected to the diverter pipe (32) and the water outlet faces the arc-shaped chip inlet (9).

6. A turning device for machining a ring groove of a piston head of a low-speed engine according to claim 5, characterized in that: The debris crushing unit comprises a crushing roller (30), a gear set (29) and a sprocket transmission set (31); There are two groups of crushing rollers (30) symmetrically arranged in the inner cavity of the chip inlet, and the roller shafts of the two groups of crushing rollers (30) penetrate one side of the liquid storage shell (27) and are connected by a gear set (29); The roller shafts of one group of the crushing rollers (30) are connected to one end of the driving shaft (24) located outside the transparent chip guide cover (8) through a sprocket transmission group (31).

7. A turning device for machining a ring groove of a piston head of a low-speed engine according to claim 6, characterized in that: The length of the driven gear 2 (23) is greater than the length of the driven gear 1 (19); when the driving gear (18) is meshed with the driven gear 1 (19), the cutter head (11) is located in the transparent chip guide cover (8); when the driving gear (18) is meshed with the driven gear 2 (23), the cutter head (11) is located in the arc-shaped chip feed opening (9).

8. The turning device for machining the ring groove of the piston head of a low-speed engine according to claim 5, characterized in that: The outer wall of the driving shaft (24) is movably sleeved with a protective sleeve (25), and the protective sleeve (25) is arranged in the chip removal chamber.

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