A laser cladding device for crankshaft processing

Abstract

The present invention is applicable to the technical field of laser cladding equipment, and in particular relates to a laser cladding device for crankshaft processing, comprising a CNC machine tool, wherein a main head and a secondary head are respectively provided on both sides of the upper side of the CNC machine tool, wherein the main head and the secondary head are respectively rotatably connected to a rotating main shaft and a rotating secondary shaft, and a laser cladding machine is installed on the upper side of the CNC machine tool. The present invention provides a threaded sleeve, a slider, a slide, a slide, a chuck, a fixture eccentric adjustment bolt, an eccentric fixture locking bolt and a limit threaded hole. Before the crankshaft workpiece is clad, the radial position of the main head adjustable eccentric fixture and the secondary head adjustable eccentric fixture can be adjusted according to the specific shape of the crankshaft workpiece, so that after the main head adjustable eccentric fixture and the secondary head adjustable eccentric fixture stably clamp the crankshaft workpiece, the axial centerline of the crankshaft workpiece journal is adjusted to coincide with the centerline of the machine tool spindle, so as to facilitate the subsequent cladding operation on the crankshaft workpiece.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cladding equipment, in particular to a laser cladding device for crankshaft processing. Background Art

[0002] Laser cladding technology is a new high-tech green surface modification additive technology. Its working principle is to use a high-energy density laser beam as a heat source to simultaneously melt the alloy powder and the substrate surface, micro-melt the base surface, and quickly solidify it in situ to form a strengthening layer with an extremely low dilution rate and metallurgical bonding with the substrate. It significantly improves the wear resistance, corrosion resistance, heat resistance, and oxidation resistance of the substrate surface, achieving the purpose of metal surface strengthening additive.

[0003] During the machining of crankshaft workpieces, a laser cladding device is required to enhance the surface strength of the crankshaft. Before laser cladding is performed on the crankshaft, a special fixture is usually required to stabilize the position of the crankshaft workpiece. However, when the fixture of the current laser cladding device is clamping the crankshaft workpiece, it is difficult to align the axial centerline of the crankshaft journal to be clad with the centerline of the machine tool spindle. As a result, the outer surface of the crankshaft workpiece cannot be uniformly clad during the subsequent cladding process. Summary of the Invention

[0004] The purpose of an embodiment of the present invention is to provide a laser cladding device for crankshaft processing, aiming to solve the following problem: when the fixture of the current laser cladding device clamps and limits the crankshaft workpiece, it is difficult to adjust the axial center line of the journal of the crankshaft workpiece to be clad by the fixture to coincide with the center line of the machine tool spindle, resulting in the outer surface of the crankshaft workpiece not being able to be uniformly clad during the subsequent cladding process.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A laser cladding device for crankshaft processing includes a CNC machine tool, wherein a main head and an auxiliary head are respectively provided on both sides of the upper side of the CNC machine tool, wherein a rotating main shaft and a rotating auxiliary shaft are rotatably connected inside the main head and the auxiliary head, respectively, a laser cladding machine is installed on the upper side of the CNC machine tool, and a laser cladding nozzle is provided on the lower side of the laser cladding machine, and the laser cladding device for crankshaft processing further includes:

[0007] Two chucks are respectively connected to one end of the rotating main shaft and the rotating secondary shaft that are close to each other, and the sides of the two chucks that are close to each other are slidably connected to slides, and the outer sides of the two slides are respectively provided with an adjustable eccentric clamp of the main head and an adjustable eccentric clamp of the auxiliary head, a screw sleeve is provided on the side of the chuck, and the inside of the screw sleeve is engaged with the clamp eccentric adjustment bolt, an eccentric clamp locking bolt is provided on the outer side of the chuck, and a plurality of limiting threaded holes are opened on the sides of the slide and the chuck;

[0008] The driving assembly is arranged on the outside of the rotating main shaft and the main machine head, and is used to drive the rotating main shaft to rotate.

[0009] Furthermore, a sliding groove is provided on the side of the chuck, and a slider is installed on the side of the slide. The slide is slidably connected to the side of the chuck through the cooperation of the slider and the sliding groove.

[0010] Furthermore, one end of the eccentric adjustment bolt of the clamp abuts against the outer side of the slide.

[0011] Furthermore, the driving assembly includes:

[0012] A driving motor is installed on the outside of the main engine head, and transmission wheels are installed on one end of the driving motor and the outside of the rotating main shaft; and

[0013] The transmission belt is sleeved on the outer sides of the two transmission wheels.

[0014] Furthermore, a first counterweight plate and a second counterweight plate are respectively provided on one side of the outer side of the rotating main shaft and the side surface of the auxiliary head.

[0015] Furthermore, the outer side of the auxiliary head is connected to a translation seat, and the outer side of the translation seat is rotatably connected to a handheld turntable, one end of the handheld turntable is installed with a driving gear, and the inside of the CNC machine tool is installed with a transmission rack, and the outer side of the transmission rack is meshed with the outer side of the driving gear.

[0016] Furthermore, a locking bolt is provided on the outer side of the auxiliary head.

[0017] The laser cladding device for crankshaft machining provided by the present invention has the following beneficial effects:

[0018] By setting a threaded sleeve, a slider, a slide groove, a slide, a chuck, a fixture eccentric adjustment bolt, an eccentric fixture locking bolt and a limit threaded hole, the radial position of the main head adjustable eccentric fixture and the auxiliary head adjustable eccentric fixture can be adjusted according to the specific shape of the crankshaft workpiece before the crankshaft workpiece is clad. After the main head adjustable eccentric fixture and the auxiliary head adjustable eccentric fixture stably clamp the crankshaft workpiece, the axial center line of the crankshaft workpiece's journal is adjusted to coincide with the center line of the machine tool spindle, so as to facilitate the subsequent cladding operation on the crankshaft workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a laser cladding device for crankshaft processing.

[0020] In the figure: 1. CNC machine tool; 2. Main machine head; 3. Rotating spindle; 4. First counterweight; 5. Transmission belt; 6. Drive motor; 7. Eccentric fixture locking bolt; 8. Adjustable eccentric fixture of the main machine head; 9. Fixture eccentricity adjustment bolt; 10. Laser cladding machine; 11. Laser cladding nozzle; 12. Crankshaft workpiece; 13. Adjustable eccentric fixture of the auxiliary machine head; 14. Auxiliary machine head; 15. Second counterweight; 16. Transmission rack; 17. Handheld turntable; 18. Translation seat; 19. Slide; 20. Chuck; 21. Locking bolt. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0023] like Figure 1 As shown, an embodiment of the present invention provides a laser cladding device for crankshaft processing, comprising a CNC machine tool 1, wherein a main head 2 and an auxiliary head 14 are respectively provided on both sides of the upper side of the CNC machine tool 1, wherein a rotating main shaft 3 and a rotating auxiliary shaft are rotatably connected to the interior of the main head 2 and the auxiliary head 14, respectively, a laser cladding machine 10 is installed on the upper side of the CNC machine tool 1, and a laser cladding nozzle 11 is provided on the lower side of the laser cladding machine 10, and the laser cladding device for crankshaft processing further comprises:

[0024] The two chucks 20 are respectively connected to one end of the rotating main shaft 3 and the rotating secondary shaft that are close to each other, and the sides of the two chucks 20 that are close to each other are slidably connected with a slide 19, and a slide groove is provided on the side of the chuck 20, and a slider is installed on the side of the slide 19. The slide 19 is slidably connected to the side of the chuck 20 through the cooperation of the slider and the slide groove. The outer sides of the two slides 19 are respectively provided with a main head adjustable eccentric clamp 8 and an auxiliary head adjustable eccentric clamp 13. The crankshaft workpiece 12 to be clad is stably clamped between the main head adjustable eccentric clamp 8 and the auxiliary head adjustable eccentric clamp 13. A screw sleeve is provided on the side of the chuck 20, and the inside of the screw sleeve is engaged with the clamp eccentric adjustment bolt 9. One end of the clamp eccentric adjustment bolt 9 is against the outer side of the slide 19. An eccentric clamp locking bolt 7 is provided on the outer side of the chuck 20, and a number of limiting threaded holes are provided on the sides of the slide 19 and the chuck 20.

[0025] A driving assembly is provided outside the rotating spindle 3 and the main head 2, and is used to drive the rotating spindle 3 to rotate;

[0026] The drive components include:

[0027] A drive motor 6 is mounted on the outside of the main head 2, and transmission wheels are mounted on one end of the drive motor 6 and the outside of the rotating main shaft 3; and

[0028] The transmission belt 5 is sleeved on the outside of the two transmission wheels. The transmission wheels and the transmission belt 5 are driven to rotate by the driving motor 6, so that the rotating spindle 3 can drive the chuck 20, the slide 19 and the main head adjustable eccentric clamp 8 to rotate, thereby driving the crankshaft workpiece 12 to rotate and be laser clad by the laser cladding machine 10 and the laser cladding nozzle 11.

[0029] The outer side of the auxiliary head 14 is connected to a translation seat 18, and the outer side of the translation seat 18 is rotatably connected to a hand-held turntable 17. A driving gear is installed at one end of the hand-held turntable 17. A transmission rack 16 is installed inside the CNC machine tool 1, and the outer side of the transmission rack 16 is meshed with the outer side of the driving gear. A locking bolt 21 is provided on the outer side of the auxiliary head 14. The auxiliary head 14 is slidably connected to the CNC machine tool 1, and by rotating the hand-held turntable 17 and the driving gear, the auxiliary head 14 can be driven to move horizontally on the surface of the CNC machine tool 1, and the auxiliary head 14 and the auxiliary head adjustable eccentric clamp 13 can be moved to a suitable position, and then the locking bolt 21 can be used to stably limit the auxiliary head 14 on the CNC machine tool 1.

[0030] In the technical solution of the present invention, before using the main head adjustable eccentric clamp 8 and the auxiliary head adjustable eccentric clamp 13 to limit the crankshaft workpiece 12, the radial positions of the main head adjustable eccentric clamp 8 and the auxiliary head adjustable eccentric clamp 13 on the slide 19 should be adjusted according to the axial center line of the journal of the crankshaft workpiece 12, so that the axial center line of the journal of the crankshaft workpiece 12 coincides with the center line of the main shaft of the machine tool. The specific operation is that the staff manually rotates the clamp eccentric adjustment bolt 9 that is engaged inside the screw sleeve so that the clamp eccentric adjustment bolt 9 is engaged in the screw sleeve. The eccentric clamp 8 and the auxiliary head adjustable eccentric clamp 13 on the two slides 19 clamp the crankshaft workpiece 12, and the axial center line of the journal of the crankshaft workpiece 12 is adjusted to coincide with the center line of the machine tool spindle.

[0031] Preferably, a first counterweight plate 4 and a second counterweight plate 15 are respectively provided on one side of the outer side of the rotating main shaft 3 and the side surface of the auxiliary head 14, so that the main head and the auxiliary head can be balanced to reduce the eccentric force and make the equipment run smoothly.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A laser cladding device for crankshaft processing, comprising a CNC machine tool (1), wherein a main head (2) and an auxiliary head (14) are respectively provided on both sides of the upper side of the CNC machine tool (1), wherein a rotating main shaft (3) and a rotating auxiliary shaft are respectively rotatably connected inside the main head (2) and the auxiliary head (14), a laser cladding machine (10) is installed on the upper side of the CNC machine tool (1), and a laser cladding nozzle (11) is provided on the lower side of the laser cladding machine (10), characterized in that: The laser cladding device for crankshaft processing also includes: Two chucks (20) are respectively connected to one end of the rotating main shaft (3) and the rotating secondary shaft that are close to each other, and the sides of the two chucks (20) that are close to each other are slidably connected to a slide (19), and the outer sides of the two slides (19) are respectively provided with a main head adjustable eccentric clamp (8) and an auxiliary head adjustable eccentric clamp (13), a screw sleeve is provided on the side of the chuck (20), and the inside of the screw sleeve is engaged with the clamp eccentric adjustment bolt (9), an eccentric clamp locking bolt (7) is provided on the outer side of the chuck (20), and a plurality of limiting threaded holes are opened on the sides of the slide (19) and the chuck (20); A driving assembly is provided on the outside of the rotating main shaft (3) and the main machine head (2), and is used to drive the rotating main shaft (3) to rotate; A slide groove is provided on the side of the chuck (20), and a slider is installed on the side of the slide (19), and the slide (19) is slidably connected to the side of the chuck (20) through the cooperation of the slider and the slide groove; One end of the clamp eccentric adjustment bolt (9) abuts against the outer side of the slide (19); The drive assembly includes: A driving motor (6) is mounted on the outside of the main engine head (2), and a transmission wheel is mounted on one end of the driving motor (6) and the outside of the rotating main shaft (3); and A transmission belt (5) is sleeved on the outer sides of the two transmission wheels; The outer side of the auxiliary head (14) is connected to a translation seat (18), and the outer side of the translation seat (18) is rotatably connected to a handheld turntable (17), one end of the handheld turntable (17) is installed with a driving gear, and a transmission rack (16) is installed inside the CNC machine tool (1), and the outer side of the transmission rack (16) is meshed with the outer side of the driving gear.

2. The laser cladding device for crankshaft processing according to claim 1, characterized in that: A first counterweight disc (4) and a second counterweight disc (15) are respectively provided on one side of the outer side of the rotating main shaft (3) and the side surface of the auxiliary machine head (14).

3. The laser cladding device for crankshaft processing according to claim 1, characterized in that: A locking bolt (21) is provided on the outer side of the auxiliary machine head (14).

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