Deep hole laser cladding head

Abstract

The utility model relates to the technical field of laser cladding, in particular to a deep hole laser cladding head which comprises an installation connector, a light spot adjusting structure and a cladding nozzle. The light spot adjusting structure comprises a mirror body adjusting groove, the mirror body adjusting groove is slidably clamped with an inner frame of a mirror body adjusting frame, and the inner frame of the mirror body adjusting frame is fixedly provided with a convex lens; the cladding nozzle is fixedly installed at the lower end of the light spot adjusting structure. According to the utility model, the convex lens further converges laser rays to form a conical laser beam, so that the effects of reducing the coverage range of emitted light spots and strengthening the hot melting capability of laser are achieved, and meanwhile, the effect of adjusting the height position of a light convergence point by sliding the lens body adjusting frame up and down in the lens body adjusting groove can be achieved; the method has the capability of adjusting the actual size of the light spot emitted from the cladding nozzle, and has a certain capability of adjusting the size of the light spot coverage.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cladding, in particular to a deep hole laser cladding head. Background Art

[0002] Laser cladding, also known as laser melting or laser cladding, is a new surface modification technology. It forms a metallurgically bonded filler cladding layer on the surface of the base material by adding cladding material to the surface of the base material and using a high-energy-density laser beam to melt it together with the thin layer on the base material surface.

[0003] In addition to being equipped with optical components, current laser cladding heads also need to have pneumatic conveying channels for transporting metal powder. Most of them are large and short, which makes them suitable for processing the surface layers of some workpieces. However, for some deep-hole structures, the laser cladding head cannot penetrate into the deep holes, making it difficult to achieve deep-hole cladding. In addition, some deep-hole structures have precision requirements. Since the size of the emitted light spot is fixed, the size of the cladding range is also fixed, and the current laser cladding head cannot undertake some refined cladding work. Utility Model Content

[0004] The purpose of the present invention is to provide a deep hole laser cladding head to solve the problems raised in the above background technology.

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

[0006] A deep hole laser cladding head comprises: a mounting joint, wherein the mounting joint comprises a joint body;

[0007] The light spot adjustment structure includes a mirror body adjustment slot, the mirror body adjustment slot is slidably engaged with the inner frame of the mirror body adjustment frame, and the inner frame of the mirror body adjustment frame is fixedly mounted with a convex lens;

[0008] The cladding nozzle is fixedly installed at the lower end of the light spot adjustment structure.

[0009] Further, the mounting joint further comprises:

[0010] A mounting screw socket, the mounting screw socket being rotatably mounted on the upper edge of the connector body;

[0011] A laser track is provided through the middle of the connector body.

[0012] Further, the mounting joint further comprises:

[0013] Pipe interfaces, there are two of them, and the two pipe interfaces are fixedly installed on both sides of the joint body;

[0014] Pneumatic feeding pipes, there are two pneumatic feeding pipes, the two pneumatic feeding pipes are opened on both sides of the laser track, and one end of the laser track is connected to the pipe interface;

[0015] The cavity is opened at the turning point of the pneumatic feeding pipeline.

[0016] Furthermore, the light spot adjustment structure further includes:

[0017] A deep hole probe rod, the upper end of which is fixedly connected to the joint body, a laser track is provided through the middle of the deep hole probe rod in the up and down directions, and pneumatic feeding pipes are provided on both sides of the laser track, and the mirror body adjustment groove is provided on the side wall of the laser track in the lower half of the deep hole probe rod.

[0018] Furthermore, the light spot adjustment structure further includes:

[0019] Connecting rod movable grooves, there are two connecting rod movable grooves, the two connecting rod movable grooves are interspersed and opened on both sides of the mirror body adjustment groove, and the connecting rods on both sides of the mirror body adjustment frame are slidably engaged with the connecting rod movable grooves;

[0020] An adjusting thread groove is provided on the outer surface of the deep hole probe rod;

[0021] An internal thread ring, the internal thread ring being screwed and sleeved with the adjusting thread groove;

[0022] A connecting bearing, wherein the inner ring of the connecting bearing is fixedly connected to the outer frame of the mirror body adjustment frame, and the outer ring of the connecting bearing is fixedly connected to the bottom side of the internal threaded ring.

[0023] Further, the cladding nozzle includes:

[0024] Elbow, a laser track is inserted in the middle of the elbow, and pneumatic feeding pipes are opened on both sides of the laser track. The elbow is fixedly installed at the lower end of the deep hole probe;

[0025] The laser steering mirror is fixedly installed at the turning point of the laser path inside the elbow.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. Fix the joint body to the lower end of the laser generator, so that the laser passes through the joint body, the spot adjustment structure and finally emerges from the cladding nozzle. The laser beam entering the spot adjustment structure is relatively thick and will be further converged by the convex lens to form a conical laser beam, thereby reducing the coverage range of the emitted spot and enhancing the laser hot melting ability. At the same time, the mirror adjustment frame can be slid up and down in the mirror adjustment slot to adjust the height position of the light convergence point, thereby adjusting the actual size of the spot emitted from the cladding nozzle, and having a certain ability to adjust the size of the spot coverage.

[0028] 2. High-pressure gas sends the powder into the pneumatic feeding pipe and is discharged through the cavity. The existence of the cavity can store a certain amount of compressed air, adjust the imbalance between the conveying gas volume and gas consumption, reduce the air compressor outlet pulse, stabilize the pressure in the air compression station pipeline, and thus ensure the stability of the pneumatic conveying pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0030] Figure 2 This is a schematic diagram of the installation joint in the utility model;

[0031] Figure 3 This is a schematic diagram of the light spot adjustment structure in the utility model;

[0032] Figure 4 This is a schematic diagram of the light spot adjustment structure in the utility model;

[0033] Figure 5 It is a schematic diagram of the cladding nozzle in the present utility model.

[0034] In the figure: 1. Installation joint; 101. Joint body; 102. Installation screw; 103. Pipe interface; 104. Pneumatic feeding pipe; 105. Cavity; 106. Laser path; 2. Light spot adjustment structure; 201. Deep hole probe rod; 202. Mirror body adjustment slot; 203. Mirror body adjustment frame; 204. Convex lens; 205. Connecting rod movable slot; 206. Adjustment thread groove; 207. Internal thread ring; 208. Connecting bearing; 3. Cladding nozzle; 301. Elbow; 302. Laser steering mirror. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0036] See also Figure 1-5 In an embodiment of the utility model, a deep hole laser cladding head includes a mounting joint 1, a spot adjustment structure 2 and a cladding nozzle 3. The mounting joint 1 includes a joint body 101; the spot adjustment structure 2 includes a mirror body adjustment groove 202, and the mirror body adjustment groove 202 is slidably engaged with the inner frame of the mirror body adjustment frame 203. The inner frame of the mirror body adjustment frame 203 is fixedly installed with a convex lens 204; the cladding nozzle 3 is fixedly installed at the lower end of the spot adjustment structure 2.

[0037] Specifically, the joint body 101 is fixedly installed at the lower end of the laser generator, so that the laser passes through the joint body 101 and the light spot adjustment structure 2 and is finally emitted from the cladding nozzle 3. The laser beam entering the light spot adjustment structure 2 is relatively thick, and the laser light will be further converged by the convex lens 204 to form a conical laser beam, thereby achieving the effect of reducing the coverage range of the emitted light spot and enhancing the laser hot melting ability. At the same time, the mirror adjustment frame 203 can be slid up and down in the mirror adjustment groove 202 to adjust the height position of the light convergence point, thereby adjusting the actual size of the light spot emitted from the cladding nozzle 3, and having a certain ability to adjust the size of the light spot coverage area.

[0038] Example 1

[0039] like Figure 2 As shown, in this embodiment, the mounting joint 1 also includes a mounting screw 102, a pipe interface 103, a pneumatic feeding pipe 104, a cavity 105 and a laser path 106. The mounting screw 102 is rotatably installed on the upper edge of the joint body 101; the laser path 106 is inserted and opened in the middle of the joint body 101; there are two pipe interfaces 103, and the two pipe interfaces 103 are fixedly installed on both sides of the joint body 101; there are two pneumatic feeding pipes 104, and the two pneumatic feeding pipes 104 are opened on both sides of the laser path 106, and one end of the laser path 106 is connected to the pipe interface 103; the cavity 105 is opened at the turning point of the pneumatic feeding pipe 104.

[0040] In this embodiment, by installing the screw port 102 and screwing it with the laser generator, the pipe interface 103 is connected to the metal powder pneumatic conveying system, the laser is emitted from the laser path 106, and the high-pressure gas sends the powder into the pneumatic feeding pipe 104 and is discharged through the cavity 105. The existence of the cavity 105 can store a certain amount of compressed air, adjust the imbalance between the conveying gas volume and the gas consumption, reduce the air compressor outlet pulse, stabilize the pressure in the air compression station pipeline, and thus ensure the stability of the pneumatic conveying pressure.

[0041] like Figure 1 、 5As shown, in this embodiment, the light spot adjustment structure 2 also includes a deep hole probe rod 201, the upper end of the deep hole probe rod 201 is fixedly connected to the joint body 101, a laser track 106 is inserted in the middle part of the deep hole probe rod 201 in the upper and lower directions, and pneumatic feeding pipes 104 are inserted on both sides of the laser track 106, and the mirror body adjustment groove 202 is opened at the side wall of the laser track 106 in the lower half of the deep hole probe rod 201; the cladding nozzle 3 includes an elbow 301 and a laser steering mirror 302, a laser track 106 is inserted in the middle part of the elbow 301, and pneumatic feeding pipes 104 are opened on both sides of the laser track 106, the elbow 301 is fixedly installed at the lower end of the deep hole probe rod 201; the laser steering mirror 302 is fixedly installed at the turning point of the laser track 106 inside the elbow 301.

[0042] During specific implementation, the elbow 301 is inserted into the deep hole opened in the workpiece through the deep hole probe rod 201, and the laser in the laser path 106 is reflected and redirected by the laser steering mirror 302 at the turning point of the laser path 106 inside the elbow 301, and finally emitted. The elbow 301 guides and redirects the laser and powder, making it convenient to melt the powder on the inner wall of the deep hole.

[0043] Example 2

[0044] On the basis of the first embodiment, in order to supplement the specific driving method for adjusting the convex lens 204 up and down in the mirror body adjustment groove 202 which is not mentioned in the first embodiment.

[0045] like Figure 3-4 As shown, in this embodiment, the light spot adjustment structure 2 also includes a connecting rod movable groove 205, an adjustment thread groove 206, an internal thread ring 207 and a connecting bearing 208. There are two connecting rod movable grooves 205, and the two connecting rod movable grooves 205 are interspersed and arranged on both sides of the mirror body adjustment groove 202. The connecting rods on both sides of the mirror body adjustment frame 203 are slidably engaged with the connecting rod movable grooves 205; the adjustment thread groove 206 is arranged on the outer surface of the deep hole probe rod 201; the internal thread ring 207 is screwed and sleeved with the adjustment thread groove 206; the inner ring of the connecting bearing 208 is fixedly connected to the outer frame of the mirror body adjustment frame 203, and the outer ring of the connecting bearing 208 is fixedly connected to the bottom side of the internal thread ring 207.

[0046] During specific implementation, the actual height of the outer frame of the mirror adjustment frame 203 is adjusted by rotating the internal thread ring 207 at the adjustment thread groove 206, and then the inner frame of the mirror adjustment frame 203 is driven by the connecting rod of the mirror adjustment frame 203 to slide up and down in the mirror adjustment groove 202, thereby adjusting the actual height of the convex lens 204 and actually controlling the size of the light spot.

[0047] It will be apparent 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 specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0048] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method 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 can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A deep hole laser cladding head, characterized in that: include: A mounting joint (1), the mounting joint (1) comprising a joint body (101); A light spot adjustment structure (2), the light spot adjustment structure (2) comprising a mirror body adjustment groove (202), the mirror body adjustment groove (202) being slidably engaged with an inner frame of a mirror body adjustment frame (203), and a convex lens (204) being fixedly mounted on the inner frame of the mirror body adjustment frame (203); A cladding nozzle (3) is fixedly mounted on the lower end of the light spot adjustment structure (2).

2. The deep hole laser cladding head according to claim 1, characterized in that: The mounting joint (1) further comprises: A mounting screw-on mouth (102), wherein the mounting screw-on mouth (102) is rotatably mounted on an upper edge of the joint body (101); A laser path (106) is provided through the middle of the joint body (101).

3. The deep hole laser cladding head according to claim 2, characterized in that: The mounting joint (1) further comprises: Pipe interfaces (103), the number of the pipe interfaces (103) is two, and the two pipe interfaces (103) are fixedly installed on both sides of the joint body (101); Pneumatic feeding pipes (104), the number of the pneumatic feeding pipes (104) is two, the two pneumatic feeding pipes (104) are opened on both sides of the laser path (106), and one end of the laser path (106) is connected to the pipe interface (103); The cavity (105) is opened at the turning point of the pneumatic feeding pipe (104).

4. The deep hole laser cladding head according to claim 3, characterized in that: The light spot adjustment structure (2) further includes: A deep hole probe rod (201), the upper end of the deep hole probe rod (201) is fixedly connected to the joint body (101), a laser path (106) is inserted through the middle part of the deep hole probe rod (201) in the vertical direction, and pneumatic feeding pipes (104) are inserted through both sides of the laser path (106), and the mirror body adjustment groove (202) is opened on the side wall of the laser path (106) in the lower half of the deep hole probe rod (201).

5. The deep hole laser cladding head according to claim 4, characterized in that: The light spot adjustment structure (2) further includes: Connecting rod movable grooves (205), the number of the connecting rod movable grooves (205) is two, the two connecting rod movable grooves (205) are interspersed and opened on both sides of the mirror body adjustment groove (202), and the connecting rods on both sides of the mirror body adjustment frame (203) are slidably engaged with the connecting rod movable grooves (205); An adjusting thread groove (206), wherein the adjusting thread groove (206) is formed on the outer surface of the deep hole probe rod (201); An internal thread ring (207), wherein the internal thread ring (207) is screwed and sleeved with the adjusting thread groove (206); A connecting bearing (208), wherein the inner ring of the connecting bearing (208) is fixedly connected to the outer frame of the mirror body adjustment frame (203), and the outer ring of the connecting bearing (208) is fixedly connected to the bottom side of the internal threaded ring (207).

6. The deep hole laser cladding head according to claim 5, characterized in that: The cladding nozzle (3) comprises: An elbow (301), wherein a laser path (106) is provided in the middle of the elbow (301), and pneumatic feeding pipes (104) are provided on both sides of the laser path (106), and the elbow (301) is fixedly mounted on the lower end of the deep hole probe rod (201); A laser steering mirror (302) is fixedly mounted at a turning point of the laser path (106) inside the elbow (301).

Images