Blowing device for removing crankshaft fillet burrs

Abstract

The utility model discloses a blowing device for removing crankshaft fillet burrs, and belongs to the technical field of crankshaft online production and manufacturing. The upper end and the lower end of the T-shaped connecting plate are fixedly connected with an EMA quenching machine upper cross beam and the upper end of the vertical profile respectively, the lower end of the vertical profile is perpendicularly connected with the transverse profile at an angle of 90 degrees, one end of the air blowing pipe support is connected with the transverse profile, and the other end of the air blowing pipe support is fixedly connected with the main body air pipe. The bent blowpipe, the short blowpipe and the long blowpipe are all communicated and welded with the main air pipe to form a whole and then supported by the blowpipe support, the main air pipe plug is in threaded connection with the main air pipe, and the air inlet side of the main air pipe is connected with a factory compressed air pipe. The device is simple and compact in structure and low in cost, can be directly connected with a wind power system of a factory after being positioned and mounted, solves the critical problem of production, removes all burrs adhered to the round corners of the crankshaft produced on line before rolling by wind power, ensures the rolling quality of the crankshaft, does not need manual intervention, reduces the labor cost, and greatly improves the efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of online crankshaft production and manufacturing, and particularly relates to an air blowing device for removing burrs at the fillet of a crankshaft. Background Art

[0002] The crankshaft is an important part inside the engine. It is in a high-load operation state for a long time during operation. It is subjected to periodic gas pressure and large mass inertia force during operation, which makes the crankshaft subject to alternating stresses such as bending and torsion. Stress concentration problems are very common in both the main journal and the crankshaft neck, and the crankshaft fillet is more likely to produce stress concentration, which can easily lead to fatigue cracks at the fillet, and then cause the crankshaft to fail during use. In order to ensure the fatigue life of the crankshaft, the crankshaft fillet must be deep rolled. Before the crankshaft rolling process, the burrs must be removed to prevent burrs at the fillet and affect the rolling quality of the crankshaft fillet. During the production process of the crankshaft production line, after the TPT deep hole drilling machine drills the straight oil channel and the inclined oil channel holes at the OP40 station, the KUKA robot at the OP50 station removes the burrs in the straight oil channel and the inclined oil channel holes. Small steel chips will occasionally stick to the crankshaft fillet at the OP40 and OP50 stations and need to be removed. Traditional burr removal is done manually, which directly increases labor costs and has poor results. Based on the current situation, the present invention adds a pneumatic device for deburring crankshaft corners at the OP60 EMA quenching machine, and uses wind power to remove burrs to solve the above problems existing in the existing crankshaft online production. Utility Model Content

[0003] The utility model aims to provide an air blowing device for removing burrs at crankshaft fillets, so as to solve the problem that the burrs at the crankshaft fillets affect the rolling quality of the crankshaft fillets during the existing online crankshaft manufacturing.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows: a blowing device for removing burrs on the fillet of a crankshaft, comprising a T-shaped connecting plate, a vertical profile, a blowing pipe bracket, a main air duct plug, a curved blowing pipe, a main air duct, a short blowing pipe, a long blowing pipe, a horizontal profile and an L-shaped connecting plate, the upper and lower ends of the T-shaped connecting plate are respectively fixedly connected to the upper crossbeam of the EMA quenching machine and the upper end of the vertical profile, the lower end of the vertical profile is vertically connected to the horizontal profile at an angle of 90 degrees, one end of the blowing pipe bracket is connected to the horizontal profile, and the other end of the blowing pipe bracket is fixedly connected to the main air duct, the curved blowing pipe, short blowing pipe and long blowing pipe are all connected to the main air duct and welded together into one, and then lifted by the blowing pipe bracket, the main air duct plug is threadedly connected to the main air duct to seal the main air duct, and the air inlet side of the main air duct is connected to the factory compressed air pipe.

[0005] Furthermore, the lower end of the vertical profile is connected to the horizontal profile via an L-shaped connecting plate.

[0006] Furthermore, the T-shaped connecting plate is fixedly connected to the upper crossbeam of the EMA quenching machine by means of screws and nuts, and the L-shaped connecting plate is fixedly connected to the vertical profile and the horizontal profile by means of screws and nuts.

[0007] Furthermore, the air blowing pipe bracket and the cross profile are adjusted, clamped and fixed by a keyed pin, a clamping spring and a clamping round cap. The upper end of the air blowing pipe bracket is placed on the upper surface of the cross profile. The key at the bottom of the keyed pin can rotate in the T-shaped hole in the cross profile. The upper end of the keyed pin passes through the hole at the top cross plate of the air blowing pipe bracket. The top of the keyed pin is provided with an external thread and is threadedly connected with the clamping round cap. A clamping spring is mounted on the outside of the keyed pin, and the clamping spring is arranged between the clamping round cap and the air blowing pipe bracket.

[0008] Furthermore, the air inlet side of the main air duct is connected to a 1 / 2 pipe thread external joint, and the pipe thread external joint side is connected to the factory compressed air pipe.

[0009] Furthermore, the verticality between the short blowing pipe, the long blowing pipe and the main air pipe is within 0.1 mm.

[0010] Furthermore, the curved blowing pipe, the short blowing pipe and the long blowing pipe welded to the main air pipe are fixed 3-5 mm above each fillet when the crankshaft is in a quenching rotating state.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model has a simple and compact structure and a low price. After positioning and installation, it can be directly connected to the factory wind system to solve critical production problems. The burrs on the crankshaft fillet before rolling produced online can be completely removed by wind. While ensuring the rolling quality of the crankshaft, no manual intervention is required, which reduces labor costs and greatly improves efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 yes Figure 1 Right view of;

[0015] Figure 3 It is an assembly drawing of the utility model installed in an EMA quenching machine.

[0016] The names and reference numerals of the components involved in the above drawings are as follows:

[0017] 1. T-type connecting plate; 2. Vertical profile; 3. Blowing pipe bracket; 4. Main air duct plug; 5. Bending blowing pipe; 6. Main air duct; 7. Short blowing pipe; 8. Long blowing pipe; 9. Key pin; 10. Compression spring; 11. Compression round cap; 12. Horizontal profile; 13. L-type connecting plate; 14. Screw; 15. Nut; 16. Small head center pin; 17. Quenching ring; 18. Large head center pin; 19. Lifting bracket. DETAILED DESCRIPTION

[0018] The technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0019] Specific implementation method 1: Figure 1-Figure 3 As shown, the present embodiment discloses a blowing device for removing burrs on the fillet of a crankshaft, comprising a T-shaped connecting plate 1, a vertical profile 2, a blowing pipe bracket 3, a main air duct plug 4, a curved blowing pipe 5, a main air duct 6, a short blowing pipe 7, a long blowing pipe 8, a horizontal profile 12 and an L-shaped connecting plate 13, wherein the upper and lower ends of the T-shaped connecting plate 1 are respectively fixedly connected to the upper crossbeam of the EMA quenching machine and the upper end of the vertical profile 2, the lower end of the vertical profile 2 is vertically connected to the horizontal profile 12 at an angle of 90 degrees, one end of the blowing pipe bracket 3 is connected to the horizontal profile 12, and the other end of the blowing pipe bracket 3 is fixedly connected to the main air duct 6, the curved blowing pipe 5, the short blowing pipe 7 and the long blowing pipe 8 are all connected to the main air duct 6 and welded together into one, and then lifted by the blowing pipe bracket 3, the main air duct plug 4 is threadedly connected to the main air duct 6 to seal the main air duct 6, and the air inlet side of the main air duct 6 is connected to the factory compressed air pipe.

[0020] Furthermore, the lower end of the vertical profile 2 is connected to the horizontal profile 12 via an L-shaped connecting plate 13 .

[0021] Furthermore, the T-shaped connecting plate 1 is fixedly connected to the upper crossbeam of the EMA quenching machine by means of screws 14 and nuts 15 , and the L-shaped connecting plate 13 is fixedly connected to the vertical profile 2 and the horizontal profile 12 by means of screws 14 and nuts 15 .

[0022] Furthermore, the blowing pipe bracket 3 and the horizontal profile 12 are adjusted, pressed and fixed by the keyed pin shaft 9, the clamping spring 10 and the clamping round cap 11. The upper end of the blowing pipe bracket 3 is placed on the upper surface of the horizontal profile 12. The key at the bottom of the keyed pin shaft 9 can rotate in the T-shaped hole in the horizontal profile 12. The upper end of the keyed pin shaft 9 passes through the hole at the top horizontal plate of the blowing pipe bracket 3. The top of the keyed pin shaft 9 is provided with an external thread and is threadedly connected with the clamping round cap 11. The keyed pin shaft 9 is externally sleeved with a clamping spring 10, and the clamping spring 10 is arranged between the clamping round cap 11 and the blowing pipe bracket 3. The blowing pipe bracket 3 can adjust its position laterally by the above means.

[0023] Furthermore, the air inlet side of the main air duct 6 is connected to a 1 / 2 pipe thread external joint, and the pipe thread external joint side is connected to the factory compressed air pipe.

[0024] Furthermore, the verticality between the short blowing pipe 7, the long blowing pipe 8 and the main air pipe 6 is within 0.1 mm.

[0025] Furthermore, the curved blowing pipe 5, the short blowing pipe 7 and the long blowing pipe 8 welded to the main air pipe 6 are fixed 3-5 mm above each fillet when the crankshaft is in the quenching rotation state, preferably 4 mm.

[0026] The T-shaped connecting plate 1 connects the top crossbeam and the vertical profile 2. The T-shaped connecting plate 1 is locked and fastened with screws 14 (using hexagon socket head screws) and nuts 15 (using type 1 hexagonal nuts) and placed on the upper crossbeam of the EMA quenching machine. The vertical profile 2 is vertically locked and fastened with the cross profile 12 at a 90-degree angle by relying on the L-shaped connecting plate 13 with screws 14 and nuts 15. The blow pipe bracket 3 that can adjust the horizontal position and the cross profile 12 are adjusted, pressed and fixed by the key pin 9, the compression spring 10, and the compression round cap 11. The key at the bottom of the keyed pin shaft 9 can rotate in the T-shaped hole in the profile, and the keyed pin shaft 9 passes through the hole at the top horizontal plate of the air blowing pipe bracket 3 and rotates through the clamping round cap 11 to gradually enter the inner part of the clamping round cap 11 to force the clamping spring 10 to deform, and then the key rotating at the bottom is used to firmly clamp and fix the air blowing pipe bracket 3 on the horizontal profile 12, and the bent air blowing pipe 5, short air blowing pipe 7, and long air blowing pipe 8 are welded and connected to the main air duct 6 as a whole, and then lifted by the air blowing pipe bracket 3. In order to accurately position, the short air blowing pipe 7, the long air blowing pipe 8 and the main air duct 6 are required to be perpendicular to each other within 0.1. The curved blowing pipe 5, short blowing pipe 7 and long blowing pipe 8 welded to the main air duct 6 are required to be fixed 3-5mm above each fillet when the crankshaft is in a quenching rotating state and cannot scrape against the rotating crankshaft. The main air duct plug 4 is threadedly connected to the main air duct 6 to seal the main air duct 6 and there must be no air leakage after sealing. The air inlet side of the main air duct 6 is connected to a 1 / 2 pipe threaded external joint, and the pipe threaded external joint side is connected to the factory compressed air pipe.

[0027] Then, various wind-force experiments were conducted on the crankshaft with steel chips stuck on it:

[0028] Test of the height of the split air duct, i.e. the curved air duct 5, the short air duct 7, and the long air duct 8 from the crankshaft fillet:

[0029] After the main air duct 6 of the device was completed, the distance between each split air duct and the fillet was set respectively. The experiment started from 5mm, and was divided into 5mm, 4mm, and 3mm. The results showed that 3mm had the strongest air volume, but 3mm was too close, and the wind direction sometimes could not blow to the edge of the fillet. The experiment showed that the split air ducts 5, 7, and 8 had the best height of 4mm from the crankshaft fillet.

[0030] The inner diameter size test of the split air duct, i.e. the curved air duct 5, the short air duct 7 and the long air duct 8:

[0031] After the main air duct 6 of the device was completed, split air ducts with an inner diameter of 3mm and 4mm (used as curved blow pipe 5, short blow pipe 7, and long blow pipe 8) were tested respectively. A crankshaft that was not quenched and had a small amount of steel chips on the rounded corners of the undercut groove was used to apply wind to the crankshaft, trying to blow off all the burrs on the rounded corners of the undercut groove. The experiment found that this method was feasible and the compressed air pressure in the factory was sufficient, but it was found that due to manufacturing reasons, the 3mm split air duct could not be blown to the position of some rounded corners of the undercut groove. The experiment tried to enlarge the holes of the main air duct 6 and tried a 4mm split air duct. The 4mm split air duct has a larger coverage area than the former. This experiment was able to blow clean the crankshaft corners with steel chips.

[0032] Air volume supply test:

[0033] During the installation and commissioning phase, an air volume supply experiment was conducted to see how much air volume supply can meet production needs. During the experiment, the air volume valve (installed on the pipe connecting the main air duct 6 and the factory compressed air pipe) was tested with five air volume sizes of 1 / 3, 1 / 2, 2 / 3, 3 / 4, and 1. The test results showed that when the air volume was above 2 / 3 at the existing factory air pressure, the fillet edge of the crankshaft undercut groove and the trace steel chips on the fillet corners could be blown away. However, in order to prevent air pressure fluctuations, the air valve was maintained at the 3 / 4 position in actual production.

[0034] Through the above experiments, it was found that the best effect of blowing away the burrs on the crankshaft corners is when the inner diameter of the pipe is 4mm, 4mm above the rounded corner of the undercut groove, and the compressed air valve position in the factory is 3 / 4.

[0035] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other forms without departing from the spirit or essential features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent conditions of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim involved.

[0036] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A blowing device for removing burrs from crankshaft fillets, characterized in that: The invention comprises a T-shaped connecting plate (1), a vertical profile (2), a blow pipe bracket (3), a main air pipe plug (4), a bent blow pipe (5), a main air pipe (6), a short blow pipe (7), a long blow pipe (8), a horizontal profile (12) and an L-shaped connecting plate (13), wherein the upper and lower ends of the T-shaped connecting plate (1) are respectively fixedly connected to the upper crossbeam of the EMA quenching machine and the upper end of the vertical profile (2), and the lower end of the vertical profile (2) is vertically connected to the horizontal profile (12) at an angle of 90 degrees. One end of the air blowing pipe bracket (3) is connected to the horizontal profile (12), and the other end of the air blowing pipe bracket (3) is fixedly connected to the main air duct (6). The curved air blowing pipe (5), the short air blowing pipe (7) and the long air blowing pipe (8) are all connected to the main air duct (6) and welded together to form a whole, and then supported by the air blowing pipe bracket (3). The main air duct plug (4) is threadedly connected to the main air duct (6) to seal the main air duct (6), and the air inlet side of the main air duct (6) is connected to the factory compressed air pipe.

2. The blowing device for removing burrs from crankshaft fillets according to claim 1, characterized in that: The lower end of the vertical profile (2) is connected to the horizontal profile (12) via an L-shaped connecting plate (13).

3. The blowing device for removing burrs from crankshaft fillets according to claim 2, characterized in that: The T-shaped connecting plate (1) is fixedly connected to the upper crossbeam of the EMA quenching machine through screws (14) and nuts (15), and the L-shaped connecting plate (13) is fixedly connected to the vertical profile (2) and the horizontal profile (12) through screws (14) and nuts (15).

4. The blowing device for removing burrs from crankshaft fillets according to claim 2, characterized in that: The air blowing pipe bracket (3) and the transverse profile (12) are adjusted, pressed and fixed by means of a keyed pin shaft (9), a clamping spring (10) and a clamping round cap (11); the upper end of the air blowing pipe bracket (3) rests on the upper surface of the transverse profile (12); the bottom key of the keyed pin shaft (9) can rotate in a T-shaped hole in the transverse profile (12); the upper end of the keyed pin shaft (9) passes through a hole at the top transverse plate of the air blowing pipe bracket (3); the top of the keyed pin shaft (9) is provided with an external thread and is threadedly connected to the clamping round cap (11); a clamping spring (10) is sleeved on the outside of the keyed pin shaft (9); and the clamping spring (10) is arranged between the clamping round cap (11) and the air blowing pipe bracket (3).

5. The blowing device for removing burrs from crankshaft fillets according to claim 1, characterized in that: The air inlet side of the main air duct (6) is connected to a 1 / 2 pipe thread external joint, and the pipe thread external joint side is connected to the factory compressed air pipe.

6. The blowing device for removing burrs from crankshaft fillets according to claim 1, characterized in that: The verticality between the short blowing pipe (7), the long blowing pipe (8) and the main air pipe (6) is within 0.1 mm.

7. The blowing device for removing burrs from crankshaft fillets according to claim 6, characterized in that: The curved blowing pipe (5), the short blowing pipe (7) and the long blowing pipe (8) welded to the main air pipe (6) are fixed 3-5 mm above each fillet when the crankshaft is in a quenching rotation state.

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