CN112059177A

CN112059177A - Annular part selective laser melting SLM forming equipment

Info

Publication number: CN112059177A
Application number: CN201910498723.1A
Authority: CN
Inventors: 方友福
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-10
Filing date: 2019-06-10
Publication date: 2020-12-11

Abstract

The invention discloses selective laser melting SLM forming equipment for annular parts, which comprises a base assembly and a printing assembly, wherein the base assembly consists of an L-shaped lathe bed, a forming cylinder arranged at the lower part of the lathe bed, a protective cover arranged outside the lathe bed, a guide rail arranged on the side wall of the lathe bed, a laser and a spindle seat arranged on the guide rail; the printing component consists of a motor arranged on a spindle seat, a spindle, a support connected with the spindle, a lifter arranged on the support, a first printing head, a second printing head, a third printing head and a fourth printing head which are sequentially arranged on the support, vibrating mirrors are arranged inside the four printing heads, and scrapers and powder spraying heads are arranged on the lower parts of the four printing heads. The invention can continuously spread and sinter multiple layers of materials at the same time and has higher processing efficiency.

Description

Annular part selective laser melting SLM forming equipment

Technical Field

The invention relates to the technical field of rapid forming, in particular to selective laser melting SLM forming equipment for an annular part.

Background

Selective laser melting SLM is a method for direct forming of metal parts, and is the latest development of rapid forming technology. The technology is based on the most basic idea of rapid forming, namely an incremental manufacturing mode of layer-by-layer cladding, parts with specific geometric shapes are directly formed according to a three-dimensional CAD model, and metal powder is completely melted in the forming process to generate metallurgical bonding. The metal parts with complex shapes and structures, which can not be manufactured by the traditional machining means, are one of the main directions for applying the laser rapid prototyping technology. The technology is particularly suitable for processing workpieces with various complex shapes, and is particularly suitable for complex workpieces with complex special-shaped structures inside, such as annular thin walls, cavities, three-dimensional grids and complex workpieces which cannot be manufactured by the traditional method.

The annular thin-wall part is widely applied to the aerospace and military industries, but the existing market lacks special selective laser melting SLM forming equipment for the annular part, and the defect of low efficiency exists in the process of sintering the part by adopting general SLM equipment.

Disclosure of Invention

The invention provides SLM forming equipment for selective laser melting of annular parts, which can perform multi-layer continuous and simultaneous sintering in the rapid forming process of the annular parts and has the advantage of high processing efficiency.

In order to achieve the purpose, the invention adopts the technical scheme that: the SLM forming equipment comprises a base assembly and a printing assembly, wherein the base assembly consists of an L-shaped lathe bed, a forming cylinder arranged at the lower part of the lathe bed, a protective cover arranged outside the lathe bed, a guide rail arranged on the side wall of the lathe bed, a laser and a spindle seat arranged on the guide rail; the printing component consists of a motor arranged on a spindle seat, a spindle, a support connected with the spindle, a lifter arranged on the support, a first printing head, a second printing head, a third printing head and a fourth printing head which are sequentially arranged on the support, vibrating mirrors are arranged inside the four printing heads, and scrapers and powder spraying heads are arranged on the lower parts of the four printing heads.

Further, the invention provides the SLM forming equipment for selective laser melting of the annular parts, wherein the forming cylinder is an annular cylinder, the support is of a four-claw type, the first printing head, the second printing head, the third printing head and the fourth printing head are respectively connected with each claw of the support through a lifter, and rotating shafts of the motor, the main shaft and the support are coaxial with the forming cylinder.

Furthermore, the invention provides the SLM forming equipment for selective laser melting of the annular parts, and scrapers respectively arranged on the first printing head, the second printing head, the third printing head and the fourth printing head have height differences in sequence in the horizontal direction.

The invention has the beneficial effects that: the invention provides selective laser melting SLM forming equipment for annular parts, which is characterized in that a first printing head, a second printing head, a third printing head and a fourth printing head are uniformly distributed in the circumferential direction, the four printing heads are driven by a main shaft to continuously rotate and simultaneously axially lift according to requirements under the action of a lifter to realize spiral continuous powder spreading movement, and multilayer continuous powder spreading and sintering can be carried out in the rapid forming process of the annular parts, so that the processing efficiency of the parts is greatly improved.

Drawings

FIG. 1 is a schematic front view of an SLM forming apparatus for selective laser melting of annular parts according to the present invention.

FIG. 2 is a schematic top view of an SLM forming apparatus for selective laser melting of annular parts according to the present invention.

FIG. 3 is an expanded view of a print head of an SLM forming apparatus for selective laser melting of ring parts according to the present invention.

The device comprises a machine body 1, a machine body 2, a forming cylinder 3, a powder material 4, a forming part 51, a first printing head 52, a second printing head 53, a third printing head 54, a fourth printing head 6, a support 7, a guide rail 8, a spindle seat 9, a laser 10, a motor 11, a spindle 12, a protective cover 13, a lifter 14, a galvanometer 15, a laser beam 16, a scraper 17 and a powder spraying head.

Detailed Description

The present invention will be described in further detail with reference to the drawings and the following detailed description, but the present invention is not limited to these embodiments.

The invention relates to selective laser melting SLM forming equipment for annular parts, which comprises a base assembly and a printing assembly, wherein the base assembly comprises an L-shaped lathe bed 1, a forming cylinder 2 arranged at the lower part of the lathe bed 1, a protective cover 12 arranged outside the lathe bed, a guide rail 7 arranged on the side wall of the lathe bed 1, a laser 9 and a spindle seat 8 arranged on the guide rail 7, wherein the L-shaped lathe bed 1 is provided with a laser beam source, a laser beam source and a laser beam source; the printing assembly comprises a motor 10 arranged on a spindle seat 8, a spindle 11, a bracket 6 connected with the spindle 11, a lifter 13 arranged on the bracket, and a first printing head 51, a second printing head 52, a third printing head 53 and a fourth printing head 54 which are sequentially arranged on the bracket 6, wherein the four parts of the first printing head 51, the second printing head 52, the third printing head 53 and the fourth printing head 54 are internally provided with vibrating mirrors 14, and the lower parts of the four parts are provided with scrapers 16 and powder spraying heads 17.

Further, the forming cylinder 2 is an annular cylinder, the support 6 is of a four-claw type, the first printing head 51, the second printing head 52, the third printing head 53 and the fourth printing head 54 are respectively connected with each claw of the support 6 through the lifter 13, rotating shafts of the motor 10, the main shaft 11 and the support 6 are coaxial with the forming cylinder, the motor drives the main shaft 11 and the support 6 to rotate, and the lifter 13 can drive the first printing head 51, the second printing head 52, the third printing head 53 or the fourth printing head 54 mounted at the lower part of the lifter to axially lift.

Further, the scrapers 16 respectively provided on the first print head 51, the second print head 52, the third print head 53 and the fourth print head 54 have a level difference in the horizontal direction in sequence.

When the printing operation is started, the main shaft 11 drives the printing heads to rotate, the powder spraying head 17 on the first printing head 51 releases powder, the scraper 16 mounted on the powder spraying head is used for scraping the powder, the laser beam 15 is reflected by the vibrating mirror 14 mounted on the vibrating mirror 14 to sinter the powder material 3 to realize first-layer printing, the scraper 16 on the second printing head 52 is higher than the scraper 16 on the first printing head in the horizontal direction to realize second-layer printing, the second printing head 52 is used for spreading and sintering the powder on the basis of the first-layer powder to realize second-layer printing, and the similar third printing head 53 and the similar fourth printing head 54 are used for respectively printing third layers and fourth layers; after the first print head 51 completes printing of the first layer in one rotation, the height of the first print head is increased by four print layer thicknesses under the action of the lifter 13, and then the next cycle of powder laying and printing is performed on the basis of the fourth layer, and correspondingly, after the second print head 52, the third print head 53 and the fourth print head 54 complete printing of one layer, the height of the second print head is increased by four print layer thicknesses under the action of the lifter 13, and then the next cycle of printing is performed.

Claims

1. The SLM forming equipment for selective laser melting of the annular part is characterized in that: the laser printing machine comprises a base component and a printing component, wherein the base component consists of an L-shaped machine body (1), a forming cylinder (2) arranged at the lower part of the machine body (1), a protective cover (12) arranged outside the machine body, a guide rail (7) arranged on the side wall of the machine body (1), a laser (9) and a spindle seat (8) arranged on the guide rail (7); the printing assembly comprises a motor (10) installed on a spindle seat (8), a spindle (11), a support (6) connected with the spindle (11), a lifter (13) installed on the support, and a first printing head (51), a second printing head (52), a third printing head (53) and a fourth printing head (54) which are sequentially installed on the support (6), wherein a galvanometer (14) is arranged inside each of the first printing head (51), the second printing head (52), the third printing head (53) and the fourth printing head (54), and a scraper (16) and a powder spraying head (17) are arranged on the lower portion of each of the first printing head (51), the second printing head (52), the third printing head (53) and the fourth printing head (.

2. The SLM forming apparatus according to claim 1, characterised in that the forming cylinder (2) is a circular cylinder, the frame (6) is a four-claw type, the first (51), second (52), third (53) and fourth (54) print heads are connected to each claw of the frame (6) by a lifter (13), and the motor (10), spindle (11) and pivot axis of the frame (6) are coaxial with the forming cylinder.

3. The SLM forming apparatus according to claim 1, wherein the first print head (51), the second print head (52), the third print head (53) and the fourth print head (54) are respectively provided with a scraper (16) having a height difference in horizontal direction.