CN216441610U - 3D printing and casting device for machine tool stand column - Google Patents

Abstract

The utility model discloses a machine tool stand column 3D printing and casting device which comprises a mould main body, a core bag and an exhaust device, wherein an inner cavity is formed in the inner wall of the mould main body, sand cleaning holes and sticky cores are arranged in the inner wall of the mould main body in an inserting mode, outer leakage through holes are formed in the outer walls of the two sides of the mould main body, a water gap seat is fixedly connected with the outer wall of the top of the mould main body, a filter sheet is fixedly connected with the outer wall of the top of the mould main body, a positioning table is fixedly connected with the outer wall of the top of the mould main body, a sand cylinder is fixedly connected with the outer wall of the top of the mould main body and located on one side of the positioning table, and the exhaust device comprises a first exhaust pipe and a second exhaust pipe. A pouring system is drawn on the basis of a three-dimensional digital model of a product blank after a parting surface and a pouring direction are confirmed, and in order to ensure that molten iron is stably filled with a mold and simultaneously avoid the generation of casting defects such as slag inclusion, an open pouring system is adopted and a filter disc is arranged.

Description

3D printing and casting device for machine tool stand column

Technical Field

The utility model belongs to the technical field of casting, and particularly relates to a 3D printing and casting device for a machine tool stand column.

Background

The column of the machine tool mainly plays a role in supporting a spindle box and meeting the Z-direction movement of a spindle, and is an important part for connecting a lathe bed, the spindle and a tool magazine, so that the dimensional accuracy and the casting quality of the column are particularly important.

When a machine tool upright column product is designed in the traditional casting process, the integral structure of a casting needs to be split due to the influence of factors such as the sand casting direction of a model core box, the die opening direction and the like, and the casting is divided into a plurality of parts for carving a model, manufacturing sand cores and combining the parts. The whole development process for carving the model takes 15 to 20 days, and the core assembly process has more influence on the working efficiency due to more sand core segmentation. On the other hand, the size error accumulation caused by splicing of a plurality of sand cores in the main body structure is more, the influence on the appearance of a product is also larger, and an exhaust device is not arranged in the conventional 3D printing and casting device for the machine tool stand column.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a machine tool upright post 3D printing and casting device which has the advantages of high working efficiency and good exhaust effect.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a machine tool stand 3D prints casting device, includes mould main part, core package and exhaust apparatus, the inner chamber has been seted up to the inner wall of mould main part, the inner wall interlude of mould main part is provided with sand cleaning hole and glues the core, the both sides outer wall of mould main part has all been seted up outer hourglass thru hole, the top outer wall fixedly connected with water gap seat of mould main part, the top outer wall fixedly connected with cassette of mould main part, the top outer wall fixedly connected with location platform of mould main part, the top outer wall of mould main part just is located one side fixedly connected with sand section of thick bamboo of location platform.

Exhaust apparatus includes first blast pipe and second blast pipe, the first ring of placing of the equal fixedly connected with of outer wall of first blast pipe and second blast pipe, fixedly connected with connects the trachea between the outer wall of first blast pipe and second blast pipe, it has the third blast pipe to connect tracheal one side outer wall welding.

Preferably, the core bag comprises a two-arm open-seat inner cavity sand core, a left-side arm inner cavity sand core is fixedly connected to the outer wall of one side of the two-arm open-seat inner cavity sand core, and a right-side arm inner cavity sand core is fixedly connected to the outer wall of one side of the two-arm open-seat inner cavity sand core, which is far away from the left-side arm inner cavity sand core.

Preferably, a transmission pipe is fixedly connected between the positioning table and the outer wall of the sand cylinder, and the positioning table is communicated with the sand cylinder through the transmission pipe.

Preferably, the outer wall of first blast pipe and second blast pipe all is provided with the standing groove, first blast pipe and second blast pipe are through being connected the trachea intercommunication.

Preferably, the outer wall of the third exhaust pipe is fixedly connected with a second placing ring.

Preferably, the outer wall of the core bag is provided with a channel steel, and the outer wall of the channel steel is provided with heat dissipation holes.

Compared with the prior art, the utility model has the beneficial effects that:

1. a pouring system is drawn on the basis of a three-dimensional digital model of a product blank after a parting surface and a pouring direction are confirmed, and in order to ensure that molten iron is stably filled with a mold and simultaneously avoid casting defects such as slag inclusion and the like, an open pouring system is adopted and a filter disc is arranged.

2. Mechanical limitations of tooling load bearing, a printing sand box and the like are considered, the core division drawing is divided into 4 main cores and 2 auxiliary cores, the assembly gap is 1mm, the core strengthening exhausting is considered, a special exhausting device is independently designed for the core cladding 10, and finally the 3D printing process core division drawing is completed.

3. After the 3D printing technology is adopted, the model making time is saved in the whole research and development process, the core assembling work efficiency is improved through fewer sand cores, the whole research and development process is improved in timeliness, the appearance quality is greatly improved, the sand cores can be completely omitted, and therefore the purpose of carrying out box inspection and forming and delivering quickly from process design to sand core printing is achieved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic diagram of a core package structure according to the present invention;

FIG. 3 is a schematic view of the exhaust apparatus according to the present invention;

fig. 4 is a schematic view of a 3D printing process split core structure of the present invention.

In the figure: 1. a mold body; 2. an inner cavity; 3. core sticking of the sand cleaning hole; 4. an outer leak through hole; 5. A water port seat; 6. a filter disc; 7. a positioning table; 8. a sand cylinder; 9. a conveying pipe; 10. a core package; 101. a two-arm hollow crotch inner cavity sand core; 102. a left side arm inner cavity sand core; 103. sand in the inner cavity of the right side arm; 11. an exhaust device; 111. a first exhaust pipe; 112. a second exhaust pipe; 113. a placement groove; 114. a first placement ring; 115. connecting an air pipe; 116. a third exhaust pipe; 117. a second placing ring; 12. channel steel; 13. and (4) heat dissipation holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: A3D printing and casting device for a machine tool upright column comprises a mold main body 1, a core bag 10 and an exhaust device 11, wherein an inner cavity 2 is formed in the inner wall of the mold main body 1, sand cleaning holes and core bonding 3 are arranged in the inner wall of the mold main body 1 in an inserting mode, outer leakage through holes 4 are formed in the outer walls of the two sides of the mold main body 1, a water gap seat 5 is fixedly connected to the outer wall of the top of the mold main body 1, a filter sheet 6 is fixedly connected to the outer wall of the top of the mold main body 1, a positioning table 7 is fixedly connected to the outer wall of the top of the mold main body 1, a sand cylinder 8 is fixedly connected to one side, located on the positioning table 7, of the outer wall of the top of the mold main body 1, the exhaust device 11 comprises a first exhaust pipe 111 and a second exhaust pipe 112, a first placing ring 114 is fixedly connected to the outer walls of the first exhaust pipe 111 and the second exhaust pipe 112, and a connecting air pipe 115 is fixedly connected between the outer walls of the first exhaust pipe 111 and the second exhaust pipe 112, a third exhaust pipe 116 is welded to the outer wall of one side of the connecting air pipe 115.

In the embodiment, after a parting surface and a pouring direction are confirmed, a pouring system is drawn on the basis of a three-dimensional digital model of a product blank, in order to ensure that molten iron is stably filled and casting defects such as slag inclusion are avoided, an open pouring system is adopted and provided with a filter plate 6, different scales are added to a blank drawing with the pouring system according to a product structure, the length scale is 0.9%, the width scale is 1% and the height scale is 1%, a blank drawing with the scales and the pouring system is generated, a 3D printing core division scheme is manufactured on the basis of the generated blank drawing with the scales and the pouring system, mechanical limitations such as tooling load and a printing sand box are considered and divided into 4 main cores and 2 auxiliary cores, an assembly gap is 1mm, reinforced sand core exhaust is considered, a special exhaust device 11 is independently designed for the core package 10, each sand core is independently stored for printing, and a printer sand core adopting a 3DP technology is used for printing the sand core, the requirement of the tensile strength of 8-shaped test blocks in the three-coordinate direction of the printing sand core is more than 1.2MPa, the sand core is assembled together by using a binder in the core assembling process, 14# b channel steel 12 is used for fastening the assembled core package 10 together, molten iron is injected into the fastened core package 10, the pouring temperature is 1370-1390 ℃, the pouring time is 37-50 s, projections such as a sprue, a dead head, relief grinding burrs and skin seams are cut off in the cleaning process, stress relief annealing treatment is carried out on a product by using an aging kiln, and the core package 10 and an exhaust device 11 are arranged inside the mold main body 1.

Specifically, the core package 10 includes a two-arm open seat inner cavity sand core 101, a left-side arm inner cavity sand core 102 is fixedly connected to an outer wall of one side of the two-arm open seat inner cavity sand core 101, and a right-side arm inner cavity sand core 103 is fixedly connected to an outer wall of one side of the two-arm open seat inner cavity sand core 101, which is far away from the left-side arm inner cavity sand core 102.

In this embodiment, the core package 10 is composed of the two-arm open-seat inner cavity sand core 101, the left-arm inner cavity sand core 102 and the right-arm inner cavity sand core 103, and is convenient to assemble and disassemble.

Specifically, a conveying pipe 9 is fixedly connected between the positioning table 7 and the outer wall of the sand cylinder 8, and the positioning table 7 is communicated with the sand cylinder 8 through the conveying pipe 9.

In this embodiment, the material communication between the positioning table 7 and the sand cylinder 8 is achieved by means of a transfer pipe 9.

Specifically, the outer walls of the first exhaust pipe 111 and the second exhaust pipe 112 are both provided with a placement groove 113, and the first exhaust pipe 111 and the second exhaust pipe 112 are communicated through a connecting pipe 115.

In the present embodiment, the pillar inner is conveniently supported by the disposition of the placement groove 113.

Specifically, the outer wall of the third exhaust pipe 116 is fixedly connected with a second placing ring 117.

In this embodiment, the placement of the internal components on the exhaust device 11 is facilitated by the provision of the second placement ring 117.

Specifically, the outer wall of the core package 10 is provided with a channel steel 12, and the outer wall of the channel steel 12 is provided with a heat dissipation hole 13.

In this embodiment, through the setting of louvre 13, the heat that makes things convenient for the internal casting gives off.

The working principle and the using process of the utility model are as follows: after confirming the parting surface and the pouring direction, drawing a pouring system on the basis of a three-dimensional digital model of a product blank, adopting an open pouring system and being provided with a filter 6 in order to ensure that the molten iron stably fills the mold and simultaneously avoids the generation of casting defects such as slag inclusion, and the cross-sectional area ratio of each pouring channel is sigma F direct: Σ F horizontal: Σ F ═ 1: 1.5-1.6: 1.8-2.0, generating a blank drawing with a pouring system (figure 3), adding different scales to the blank drawing with the pouring system according to a product structure, wherein the length scale is 0.9%, the width scale is 1% and the height scale is 1%, generating the blank drawing with the scales and the pouring system, manufacturing a 3D printing core division scheme on the basis of generating the blank drawing with the scales and the pouring system, considering mechanical limitations of a tooling load, a printing sand box and the like, dividing the blank drawing into 4 main cores and 2 auxiliary cores, assembling a clearance of 1mm, considering reinforcing sand core exhaust, independently designing a special exhaust device 11 for a core package 10, finally completing a 3D printing process core division drawing, independently storing and preparing each sand core for printing, printing the sand core by using a printer adopting a 3DP technology, and printing 8-shaped test blocks of the sand core in three coordinate directions, wherein the tensile strength requirement is all larger than 1.2MPa, assembling the sand cores by using a binder in a core assembling process, and (3) fastening the assembled core package 10 together by using 14# b channel steel 12, injecting molten iron into the fastened core package 10, pouring at 1370-1390 ℃ for 37-50 s, cutting off projections such as a sprue, a riser, a relief grinding burr and a leather seam in the cleaning process, and performing stress relief annealing treatment on the product by using an aging kiln.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a machine tool stand 3D prints casting device, includes mould main part (1), core package (10) and exhaust apparatus (11), its characterized in that: an inner cavity (2) is formed in the inner wall of the die main body (1), a sand cleaning hole adhesive core (3) is arranged in the inner wall of the die main body (1) in an inserting mode, outer leakage through holes (4) are formed in the outer walls of the two sides of the die main body (1), a water gap seat (5) is fixedly connected to the outer wall of the top of the die main body (1), a filter sheet (6) is fixedly connected to the outer wall of the top of the die main body (1), a positioning table (7) is fixedly connected to the outer wall of the top of the die main body (1), and a sand cylinder (8) is fixedly connected to one side, located on the positioning table (7), of the outer wall of the top of the die main body (1);

exhaust apparatus (11) include first exhaust pipe (111) and second exhaust pipe (112), the equal fixedly connected with of outer wall of first exhaust pipe (111) and second exhaust pipe (112) is first to place ring (114), fixedly connected with connects trachea (115) between the outer wall of first exhaust pipe (111) and second exhaust pipe (112), one side outer wall welding of connecting trachea (115) has third exhaust pipe (116).

2. The machine tool column 3D printing and casting device according to claim 1, characterized in that: the core bag (10) comprises a two-arm open-seat inner cavity sand core (101), a left-side arm inner cavity sand core (102) is fixedly connected to the outer wall of one side of the two-arm open-seat inner cavity sand core (101), and a right-side arm inner cavity sand core (103) is fixedly connected to the outer wall of one side, far away from the left-side arm inner cavity sand core (102), of the two-arm open-seat inner cavity sand core (101).

3. The machine tool column 3D printing and casting device according to claim 1, characterized in that: and a conveying pipe (9) is fixedly connected between the positioning table (7) and the outer wall of the sand cylinder (8), and the positioning table (7) is communicated with the sand cylinder (8) through the conveying pipe (9).

4. The machine tool column 3D printing and casting device according to claim 1, characterized in that: the outer walls of the first exhaust pipe (111) and the second exhaust pipe (112) are provided with placing grooves (113), and the first exhaust pipe (111) is communicated with the second exhaust pipe (112) through a connecting air pipe (115).

5. The machine tool column 3D printing and casting device according to claim 1, characterized in that: and a second placing ring (117) is fixedly connected to the outer wall of the third exhaust pipe (116).

6. The machine tool column 3D printing and casting device according to claim 2, characterized in that: the core bag (10) is characterized in that channel steel (12) is arranged on the outer wall of the core bag, and heat dissipation holes (13) are formed in the outer wall of the channel steel (12).

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