阅读说明：本技术 一种铸造砂芯修芯方法及修芯专用工具 (Core repairing method for casting sand core and special tool for core repairing ) 是由 梁春平 于 2021-02-05 设计创作，主要内容包括：本发明公开了一种铸造砂芯修芯方法,包括以下步骤：设置一个修芯棒和在修芯棒的两端设置与砂芯的芯孔相适配的修芯头,将修芯棒插入砂芯的芯孔中,修芯棒上的修芯头可以将砂芯的芯孔孔壁上的披锋进行去除；并且在修芯棒上设置防倾斜支撑机构支撑在砂芯的芯孔内,使修芯棒的轴线与砂芯的芯孔轴线保持重合。本发明还公开了一种修芯专用工具。本发明的铸造砂芯修芯方法及修芯专用工具,属于铸造砂芯技术领域,只需将修芯棒及修芯头穿过砂芯的芯孔即可完成披锋去除,不同的芯孔孔径或形状选择不同的修芯头安装在修芯棒上,即可对不同的芯孔进行披锋去除,操作简单,披锋去除效率高,去除完全,保证芯孔的质量。(The invention discloses a core repairing method for a casting sand core, which comprises the following steps: arranging a core trimming rod and arranging core trimming heads matched with the core holes of the sand core at two ends of the core trimming rod, inserting the core trimming rod into the core holes of the sand core, wherein the core trimming heads on the core trimming rod can remove burrs on the wall of the core hole of the sand core; and an anti-tilting supporting mechanism is arranged on the core trimming rod and supported in the core hole of the sand core, so that the axis of the core trimming rod is kept coincident with the axis of the core hole of the sand core. The invention also discloses a special tool for repairing the core. The invention discloses a core repairing method for a casting sand core and a special core repairing tool, belongs to the technical field of casting sand cores, can complete the deburring only by penetrating a core repairing rod and a core repairing head through a core hole of the sand core, can perform deburring on different core holes by selecting different core repairing heads with different core hole apertures or shapes and installing the different core repairing heads on the core repairing rod, and has the advantages of simple operation, high deburring efficiency, complete deburring and guarantee of the quality of the core hole.)

1. The core repairing method for the casting sand core is characterized by comprising the following steps of: arranging a core trimming rod (1) and arranging core trimming heads (2) matched with core holes of the sand core at two ends of the core trimming rod (1), inserting the core trimming rod (1) into the core holes of the sand core, wherein burrs on the wall of the core hole of the sand core can be removed by the core trimming heads (2) on the core trimming rod (1); and the core trimming rod (1) is provided with an anti-inclination supporting mechanism (3) which is supported on the wall of the core hole of the sand core, so that the axis of the core trimming rod (1) is kept coincident with the axis of the core hole of the sand core.

2. The core repairing method for the casting sand core is characterized in that the anti-inclination supporting mechanism (3) comprises two sliding sleeves (4) arranged at two ends of the core repairing rod (1), a spring (5) connected with the core repairing head (2) is arranged on the outer end face of each sliding sleeve (4), and a brush structure (6) obliquely extending is arranged on the outer edge of each sliding sleeve (4).

3. The core-repairing method for the casting sand core as claimed in claim 2, wherein the brush structure (6) is evenly arranged at the edge of the sliding sleeve (4) in the circumferential direction around the center of the sliding sleeve.

4. The core repairing method for the casting sand core as claimed in claim 2 or 3, wherein a plurality of sliding grooves (7) which axially extend are formed at two ends of the outer cylindrical surface of the core repairing rod (1), and protrusions (8) which are matched with the sliding grooves (7) are formed on the inner wall of the sliding sleeve (4).

5. The core trimming method for the casting sand core according to claim 4, wherein annular clamping grooves (9) communicated with the sliding grooves (7) are formed in two ends of the trimming rod (1), a positioning hole (10) matched with the end part of the trimming rod (1) is formed in the center of each of the two trimming heads (2), and clamping blocks (11) matched with the sliding grooves (7) and the annular clamping grooves (9) are arranged on the wall of the positioning hole (10).

6. The special core trimming tool for realizing the core trimming method of the casting sand core in the claim 1 is characterized by comprising a core trimming rod (1) and core trimming heads (2) arranged at two ends of the core trimming rod (1), wherein the side surfaces of the core trimming heads (2) can adapt to the wall of a core hole of the sand core, and an anti-inclination supporting mechanism (3) which can be abutted against the wall of the core hole of the sand core is arranged between the two core trimming heads (2) on the core trimming rod (1).

7. The special tool for repairing the core according to claim 6, wherein the anti-tilting support mechanism (3) comprises two sliding sleeves (4) arranged at two ends of the repairing core rod (1), a spring (5) connected with the repairing core head (2) is arranged on the outer end face of each sliding sleeve (4), and a brush structure (6) obliquely extending is arranged on the outer edge of each sliding sleeve (4).

8. The special tool for repairing the core according to claim 7, wherein the brush structure (6) is circumferentially and uniformly arranged at the edge around the center of the sliding sleeve (4).

9. The special core repairing tool according to claim 7 or 8, wherein a plurality of sliding grooves (7) extending axially are formed in two ends of the outer cylindrical surface of the core repairing rod (1), and protrusions (8) matched with the sliding grooves (7) are formed in the inner wall of the sliding sleeve (4).

10. The special core repairing tool according to claim 9, wherein two ends of the core repairing rod (1) are provided with annular clamping grooves (9) communicated with the sliding grooves (7), the centers of the two core repairing heads (2) are provided with positioning holes (10) matched with the ends of the core repairing rod (1), and the wall of each positioning hole (10) is provided with a clamping block (11) matched with the sliding grooves (7) and the annular clamping grooves (9).

Technical Field

The invention relates to a casting sand core technology, in particular to a core repairing method for a casting sand core and a special core repairing tool.

Background

At present, when a core of a casting sand core is repaired, in a hole forming a cylindrical position of a casting, because a box dividing surface of a mold is positioned in the middle of the hole, a flash is formed between an upper mold and a lower mold, and the flash needs to be repaired manually. The tool commonly used is a file. The disadvantages are as follows: 1. when the burr is used for repairing the core by using a file, the burr can be completely removed only by winding a circle of holes, if only a half edge is scraped, the burr is easy to be repaired incompletely, and a defective product is caused by defects formed after normal production and pouring of the sand core; 2. if the flash is missed, the casting may be scrapped after normal production.

Disclosure of Invention

The present invention is directed to solving the above-mentioned problems of the prior art, and one of the objectives of the present invention is to provide a core repairing method for a casting sand core, which can rapidly and completely remove burrs from a core hole.

The second purpose of the invention is to provide a special tool for repairing the casting sand core.

In order to achieve the first purpose, the invention provides a core repairing method for a casting sand core, which comprises the following steps of: arranging a core trimming rod and arranging core trimming heads matched with the core holes of the sand core at two ends of the core trimming rod, inserting the core trimming rod into the core holes of the sand core, wherein the core trimming heads on the core trimming rod can remove burrs on the wall of the core hole of the sand core; and an anti-tilting supporting mechanism is arranged on the core trimming rod and supported in the core hole of the sand core, so that the axis of the core trimming rod is kept coincident with the axis of the core hole of the sand core.

Furthermore, the anti-tilt supporting mechanism comprises two sliding sleeves arranged at two ends of the core repairing rod, springs connected with the core repairing heads are arranged on the outer end faces of the sliding sleeves, and a brush structure obliquely extending out of the sliding sleeves is arranged on the outer edge of the sliding sleeves.

Furthermore, the edge of the hairbrush structure is uniformly arranged around the circumference of the circle center of the sliding sleeve.

Furthermore, a plurality of sliding grooves which are axially extended are formed in two ends of the outer cylindrical surface of the core trimming rod, and protrusions matched with the sliding grooves are formed in the inner wall of the sliding sleeve.

Furthermore, two ends of the core trimming rod are provided with annular clamping grooves communicated with the sliding grooves, the centers of the two core trimming heads are provided with positioning holes matched with the end parts of the core trimming rod, and the hole walls of the positioning holes are provided with clamping blocks matched with the sliding grooves and the annular clamping grooves.

In order to achieve the second purpose, the invention also provides a special core trimming tool for realizing the core trimming method of the casting sand core, which comprises a core trimming rod and core trimming heads arranged at two ends of the core trimming rod, wherein the side surface of each core trimming head can be adapted to the wall of the core hole of the sand core, and an anti-inclination supporting mechanism which can be abutted against the wall of the core hole of the sand core is arranged between the two core trimming heads on the core trimming rod.

Furthermore, the anti-tilt supporting mechanism comprises two sliding sleeves arranged at two ends of the core repairing rod, springs connected with the core repairing heads are arranged on the outer end faces of the sliding sleeves, and a brush structure obliquely extending out of the sliding sleeves is arranged on the outer edge of the sliding sleeves.

Furthermore, the edge of the hairbrush structure is uniformly arranged around the circumference of the circle center of the sliding sleeve.

Furthermore, a plurality of sliding grooves which are axially extended are formed in two ends of the outer cylindrical surface of the core trimming rod, and protrusions matched with the sliding grooves are formed in the inner wall of the sliding sleeve.

Furthermore, two ends of the core trimming rod are provided with annular clamping grooves communicated with the sliding grooves, the centers of the two core trimming heads are provided with positioning holes matched with the end parts of the core trimming rod, and the hole walls of the positioning holes are provided with clamping blocks matched with the sliding grooves and the annular clamping grooves.

Advantageous effects

Compared with the prior art, the core repairing method and the special core repairing tool for the casting sand core have the following beneficial effects: (1) according to the core repairing method and the special core repairing tool for the casting sand core, the burr removal can be completed only by enabling the core repairing rod and the core repairing head to penetrate through the core hole of the sand core, the burr removal can be performed on different core holes by selecting different core repairing heads for different core hole apertures or shapes and installing the core repairing heads on the core repairing rod, the operation is simple, the burr removal efficiency is high, the burr removal is complete, and the quality of the core hole is ensured;

(2) according to the core repairing method for the casting sand core, the anti-inclination supporting mechanism is arranged to support the core repairing rod, when the core repairing head at one end of the core repairing rod is inserted into the core hole, the upper portion of the core repairing rod can be supported on the wall of the core hole through the anti-inclination supporting mechanism, the core repairing rod can be prevented from inclining through the anti-inclination supporting mechanism, the core repairing head is prevented from being clamped in the core hole or the corners of the core repairing head are prevented from scratching the inner wall of the core hole, when the core repairing head at only one end of the core repairing rod is inserted into the core hole, the core repairing rod can still be kept coaxial with the core hole, and the core repairing rod and the core repairing head can smoothly penetrate through the core hole.

Drawings

FIG. 1 is a front elevation view of the construction of the core-building method of the casting sand core of the present invention;

FIG. 2 is an enlarged schematic view of the anti-tilt support mechanism of the present invention;

FIG. 3 is a schematic view of the construction of a core rod according to the present invention;

FIG. 4 is an enlarged side view of the construction of the core repair head of the present invention;

fig. 5 is a sectional view of the structure taken along the line a-a in fig. 4.

In the figure: 1. repairing the core rod; 2. trimming the core print; 3. an anti-tilt support mechanism; 4. a sliding sleeve; 5. a spring; 6. a brush structure; 7. a chute; 8. a protrusion; 9. an annular neck; 10. positioning holes; 11. and (7) clamping blocks.

Detailed Description

The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.

The specific embodiments of the present invention are such that: as shown in fig. 1-5, a core repair method for a casting sand core comprises the following steps: the core repairing method comprises the following steps of arranging a core repairing rod 1 and core repairing heads 2 matched with core holes of the sand core at two ends of the core repairing rod 1, wherein the core repairing heads 2 are of cast iron structures, are not easy to wear and have long service life, the core repairing rod 1 is inserted into the core holes of the sand core, and burrs on the wall of the core hole of the sand core can be removed through the core repairing heads 2 on the core repairing rod 1; and the core correcting rod 1 is provided with an anti-inclination supporting mechanism 3 which is supported in the core hole of the sand core so that the axis of the core correcting rod 1 is kept coincident with the axis of the core hole of the sand core. According to the core repairing method for the casting sand core, the core repairing rod 1 and the core repairing head 2 are inserted into a core hole of the sand core, the outer wall of the core repairing head 2 is in contact with the hole wall of the core hole, and the core repairing head 2 can remove burrs on the hole wall of the core hole, so that the smoothness of the hole wall of the core hole is ensured, and the quality of a cast product is ensured; according to the core repairing method for the casting sand core, the burr removing can be completed only by enabling the core repairing rod 1 and the core repairing head 2 to penetrate through the core hole of the sand core, the burr removing can be performed on different core holes by selecting different core repairing heads 2 to be installed on the core repairing rod 1 according to different core hole apertures or shapes, the operation is simple, the burr removing efficiency is high, the burr removing is complete, and the quality of the core hole is guaranteed.

According to the core repairing method for the casting sand core, the anti-inclination supporting mechanism 3 is arranged to support the core repairing rod 1, when the core repairing head 2 at one end of the core repairing rod 1 is inserted into the core hole, the upper portion of the core repairing rod 1 can be supported on the wall of the core hole through the anti-inclination supporting mechanism 3, the core repairing rod 1 can be prevented from inclining through the anti-inclination supporting mechanism 3, the core repairing head 2 is prevented from being clamped in the core hole or the corners of the core repairing head 2 scratch the inner wall of the core hole, when the core repairing head 2 at one end of the core repairing rod 1 is inserted into the core hole, the core repairing rod 1 can still be coaxial with the core hole, and the core repairing rod 1 and the core repairing head 2 can smoothly penetrate through the core hole.

In this embodiment, the anti-tilting support mechanism 3 comprises two sliding sleeves 4 arranged at two ends of the core trimming rod 1, a spring 5 connected with the core trimming head 2 is arranged on the outer end surface of each sliding sleeve 4, a brush structure 6 obliquely extending is arranged on the outer edge of each sliding sleeve 4, and each brush structure 6 is a nylon fiber structure with elasticity; when one end of the core repairing rod 1 is inserted into the core hole, the inclined hairbrush structure 6 on the sliding sleeve 4 positioned at the front end is abutted against the inner wall of the core hole opening, so that the core repairing rod 1 is kept coaxial with the core hole under the supporting action of the core repairing head 2 and the hairbrush structure 6, when the front end of the core repairing rod 1 is continuously inserted into the deep part of the core hole, the sliding sleeve 4 enters the core hole under the pulling action of the spring 5, and the hairbrush structure 6 on the sliding sleeve 4 continuously supports the core repairing rod 1; continuing to insert the core trimming rod 1 into the core hole, and enabling the brush structure 6 at the rear end of the core trimming rod 1 to enter the core hole to support the core trimming rod 1; and continuously inserting the core trimming rod 1 into the core hole, sliding the core trimming head 2 at the front end out of the core hole, supporting the core trimming rod 1 through the hairbrush structures 6 at the two ends and the core trimming head 2 at the rear end, and keeping the axes of the core trimming rod 1 and the core trimming head 2 coaxial with the axis of the core hole.

Moreover, the hairbrush structure 6 can further remove burrs on the inner wall of the core hole, so that the inner wall of the core hole is smoother.

In this embodiment, the brush arrangement 6 is arranged circumferentially and evenly around the centre of the sliding sleeve 4 at its edges.

In this embodiment, the outer cylinder surface both ends of repaieing stick 1 are equipped with the spout 7 that a plurality of axial extensions set up, are equipped with the arch 8 with spout 7 looks adaptation on the inner wall of sliding sleeve 4, and sliding sleeve 4 can be through protruding 8 and spout 7 sliding connection, guarantees that sliding sleeve 4 can be stable axial slip on repaieing stick 1, and difficult emergence is rotated.

In this embodiment, both ends of repairing core stick 1 are equipped with the ring groove 9 that communicates with spout 7, two centers of repairing core head 2 are equipped with the locating hole 10 with the tip looks adaptation of repairing core stick 1, be equipped with the fixture block 11 with spout 7 and ring groove 9 looks adaptation on the pore wall of locating hole 10, repair core head 2 can be through fixture block 11 and spout 7 sliding connection, quick cover is established on repairing core stick 1, then it is spacing to carry out the axial in the ring groove 9 of spout 7 one side to make fixture block 11 slide in through rotatory repairing core head 2, both ends and sliding sleeve 4 of rethread spring 5, repair core head 2 fixed connection, location that repairing core head 2 can be quick is on repairing core stick 1, and repair core head 2 is difficult for taking place circumferential direction.

A core trimming special tool for realizing a core trimming method of a casting sand core comprises a core trimming rod 1 and core trimming heads 2 arranged at two ends of the core trimming rod 1, wherein the side surfaces of the core trimming heads 2 can be matched with the wall of a core hole of the sand core, and an anti-tilting supporting mechanism 3 which can be abutted against the wall of the core hole of the sand core is arranged between the two core trimming heads 2 on the core trimming rod 1. In the special core repairing tool for the casting sand core, the core repairing rod 1 and the core repairing head 2 are inserted into a core hole of the sand core, the outer wall of the core repairing head 2 is contacted with the hole wall of the core hole, and the core repairing head 2 can remove burrs on the hole wall of the core hole, so that the smoothness of the hole wall of the core hole is ensured, and the quality of a cast product is ensured; this casting psammitolite repaiies core specialized tool only needs to repair core rod 1 and repaiies core head 2 and pass the core hole of psammitolite and can accomplish to drape over one's shoulders the cutting edge of a knife or a sword and get rid of, and different core hole apertures or shape are selected different and are repaiied core head 2 and install on repairing core rod 1, can drape over one's shoulders the cutting edge of a sword to get rid of to different core holes, and easy operation drapes over one's shoulders the cutting edge of a sword and gets rid of.

In this casting psammitolite repaiies in the core specialized tool, it supports core 1 to repaiied to have set up anti-tilt supporting mechanism 3, when the core head 2 of repairing 1 one end of core inserts the core hole, the upper portion of repairing core 1 can support on the core hole pore wall through anti-tilt supporting mechanism 3, can prevent to repair 1 slopes of core through anti-tilt supporting mechanism 3, prevent to repair that core head 2 blocks and dies in the core hole or cause the corner scratch core hole inner wall of repairing core head 2, when repairing core rod 1 has the core head 2 of one end to insert the core hole downtheholely, it still can keep coaxial with the core hole to repair core rod 1 to guarantee, what core head 2 can be smooth and easy passes the core hole.

In this embodiment, the anti-tilting support mechanism 3 comprises two sliding sleeves 4 arranged at two ends of the core trimming rod 1, a spring 5 connected with the core trimming head 2 is arranged on the outer end surface of each sliding sleeve 4, a brush structure 6 obliquely extending is arranged on the outer edge of each sliding sleeve 4, and each brush structure 6 is a nylon fiber structure with elasticity; when one end of the core repairing rod 1 is inserted into the core hole, the inclined hairbrush structure 6 on the sliding sleeve 4 positioned at the front end is abutted against the inner wall of the core hole opening, so that the core repairing rod 1 is kept coaxial with the core hole under the supporting action of the core repairing head 2 and the hairbrush structure 6, when the front end of the core repairing rod 1 is continuously inserted into the deep part of the core hole, the sliding sleeve 4 enters the core hole under the pulling action of the spring 5, and the hairbrush structure 6 on the sliding sleeve 4 continuously supports the core repairing rod 1; continuing to insert the core trimming rod 1 into the core hole, and enabling the brush structure 6 at the rear end of the core trimming rod 1 to enter the core hole to support the core trimming rod 1; and continuously inserting the core trimming rod 1 into the core hole, sliding the core trimming head 2 at the front end out of the core hole, supporting the core trimming rod 1 through the hairbrush structures 6 at the two ends and the core trimming head 2 at the rear end, and keeping the axes of the core trimming rod 1 and the core trimming head 2 coaxial with the axis of the core hole.

Moreover, the hairbrush structure 6 can further remove burrs on the inner wall of the core hole, so that the inner wall of the core hole is smoother.

In this embodiment, the brush arrangement 6 is arranged circumferentially and evenly around the centre of the sliding sleeve 4 at its edges.

In this embodiment, the outer cylinder surface both ends of repaieing stick 1 are equipped with the spout 7 that a plurality of axial extensions set up, are equipped with the arch 8 with spout 7 looks adaptation on the inner wall of sliding sleeve 4, and sliding sleeve 4 can be through protruding 8 and spout 7 sliding connection, guarantees that sliding sleeve 4 can be stable axial slip on repaieing stick 1, and difficult emergence is rotated.

In this embodiment, both ends of repairing core stick 1 are equipped with the ring groove 9 that communicates with spout 7, two centers of repairing core head 2 are equipped with the locating hole 10 with the tip looks adaptation of repairing core stick 1, be equipped with the fixture block 11 with spout 7 and ring groove 9 looks adaptation on the pore wall of locating hole 10, repair core head 2 can be through fixture block 11 and spout 7 sliding connection, quick cover is established on repairing core stick 1, then it is spacing to carry out the axial in the ring groove 9 of spout 7 one side to make fixture block 11 slide in through rotatory repairing core head 2, both ends and sliding sleeve 4 of rethread spring 5, repair core head 2 fixed connection, location that repairing core head 2 can be quick is on repairing core stick 1, and repair core head 2 is difficult for taking place circumferential direction.

The fixture block 11 is a trapezoid structure with a small end and a large end, and the fixture block 11 can be in interference fit with the annular clamping groove 9, so that the core trimming head 2 is fixed on the core trimming rod 1.

The above is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that several variations and modifications can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent.