CN-115647298-B - Clamping method

CN115647298BCN 115647298 BCN115647298 BCN 115647298BCN-115647298-B

Abstract

A clamping method belongs to the technical field of casting and is used for solving the problems of large clamping workload and instability of a bare casting bolt, and comprises the following steps that firstly, the side surface of a sand core, which is required to be clamped, is designed to be provided with an inward inclined surface; and sleeving the clamp on the sand core, and attaching the clamp to the inclined plane of the sand core to realize the purpose of effectively clamping the sand core. The sand core and the clamp are quickly sleeved and positioned by setting the contact surface of the sand core and the clamp as an inclined surface, and the clamping structure in the form of the clamping plate is arranged to realize the large-area clamping effect, so that the problems of low clamping efficiency and poor stability caused by the arrangement of a plurality of bolt clamping devices are avoided.

Inventors

CHENG YONGGANG
TIAN XUEZHI
SONG LIANG
LI CHAODONG
CHANG YONGHUI
WANG XIAOYI
ZHU ZHIPENG
WANG PENGDONG
WU KANGLE
LIANG ZHENYAO

Assignees

共享智能铸造产业创新中心(安徽)有限公司

Dates

Publication Date: 20260505
Application Date: 20220923

Claims (6)

1. A method of loading a card, comprising: the side surface of the sand core, which is required to be clamped, is designed to be provided with an inward inclined surface; The step of designing the sand core comprises the following steps: a three-dimensional model of a spindle box is built in design software, a side wall used for clamping is set to be an inclined plane, and the inclined plane is set to incline towards the middle of the three-dimensional model; according to the related casting requirements and the structure of the main shaft box, horizontally dividing the three-dimensional model into three sand cores, namely an upper sand core, a middle sand core and a lower sand core; The sand core clamping device comprises a sand core, a clamping plate, a locking piece and a positioning piece, wherein the clamping plate is arranged according to the inclination angle of the inclined surface and comprises two clamping plates, two locking pieces and two positioning pieces, the clamping plates are used for being matched with the inclined surface; The manufacturing steps of the fixture comprise: preparing two square steels, wherein through holes are respectively formed in two ends of each square steel; Manufacturing the positioning piece; At least three steel plates are arranged on each square steel, and the three steel plates form a clamping plate capable of covering the inclined plane of the middle sand core; the positioning piece is arranged between the square steel and the steel plate, and the square steel and the steel plate are mutually fixed, so that the inclination angle of the clamping plate is consistent with the inclination angle of the sand core inclined plane; The two locking pieces penetrate through the through holes in the square steel to connect the two clamping plates into an integral clamp; And sleeving the clamp on the sand core, and attaching the clamp to the inclined plane of the sand core to clamp the sand core.
2. The method of installing a card of claim 1, wherein the slant of the sand core has an inclination angle of 0-7 degrees.
3. The method of installing and clamping as set forth in claim 2, wherein a plurality of reinforcing ribs are provided on the inclined surface of the sand core.
4. The method of claim 1, wherein the locking member is a connecting rod having threads at both ends, and the connecting rod is locked to the square steel on the clamping plate by two or four nuts opposite to each other.
5. The method of installing a card of claim 1, wherein said step of installing said card over said sand core and clamping said sand core comprises: Combining the upper sand core, the middle sand core and the lower sand core after the manufacturing, shaping, cleaning and applying processes into a core package with a complete cavity structure; The two clamping plates are respectively attached to the inclined plane of the middle sand core, and the positioning piece is well matched with the hollowed-out structure, so that mutual interference between the two clamping plates is avoided; the two locking pieces penetrate through the through holes of the two ends of the two square steels of the clamping plate respectively, the nuts are adopted to enable the locking pieces to tighten the two clamping plates which are connected with each other, and the clamping or horizontal fastening effect of the middle sand core is achieved.
6. The method of installing and clamping as set forth in claim 1, wherein the step of installing and clamping the sand core according to the inclination angle of the inclined surface includes: four square steels are prepared, and through holes are respectively formed in two ends of each square steel; Manufacturing the positioning piece; arranging two square steel in a group side by side manner, arranging a long strip steel plate on each group of square steel arranged side by side, arranging at least three long strip steel plates on each group of square steel, and forming an inclined plane clamping plate capable of covering the middle sand core, the upper sand core with at least one third of the height and the lower sand core with at least one third of the height by a plurality of steel plates; the positioning piece is arranged between the square steel and the steel plate, so that the inclination angle of the steel plate is consistent with the inclination angle of the sand core inclined plane; Four locking pieces pass through the through holes in the square steel to connect the two clamping plates with an integral clamp.

Description

Clamping method Technical Field The invention relates to the technical field of casting, in particular to a sand core clamping method and a sand core clamping device. Background The casting is a technological process of smelting metal into liquid meeting certain requirement, pouring the liquid into casting mould, cooling, solidifying and cleaning to obtain the casting with preset shape, size and performance. Before the casting of the core package (with the sand core and the sand mold or the sand mold and the sand mold or the assembly combination of the sand core and the sand mold with the complete cavity structure of the casting) is carried out, the fixture is required to be assembled before and after the core package due to the influence of the strength of the sand mold so as to improve the integral strength of the core package. But not only the time of loading and clamping is prolonged, but also the labor intensity is increased. In addition, the 3D printing mold core is produced by adopting a 3D printing technology, namely, 3D printing is not limited by the shape by adding materials layer by layer in a mode of layering processing and superposition molding by using a 3D printer, any shape except a closed cavity can be printed by 3D printing, so that more complex products are more suitable for 3D printing production. But the strength of the sand mould for 3D printing is not high, the sand mould is seriously collapsed during casting, and the fire is easy to run. The prior art adopts the tool clamp to improve the strength and the collapsibility of the sand mold, but the method has the defects that all tools are fastened by bolts when the tools are clamped, so that the clamping time is greatly prolonged, and the labor intensity of workers is also enhanced. Disclosure of Invention In view of the problems of difficult clamping and large workload of bare casting of the core package, it is necessary to provide a clamping method for realizing quick and convenient clamping of the core package. A method for loading cards, which comprises the following steps, 1) The side surface of the sand core, which is required to be clamped, is designed to be provided with an inward inclined surface; 2) Setting a clamp for clamping the sand core according to the inclination angle of the inclined plane; 3) The fixture is sleeved on the sand core, and the fixture is attached to the inclined surface of the sand core, so that the purpose of effectively clamping the sand core by the fixture is achieved. Preferably, in order to improve the strength of the sand core, reinforcing ribs with reinforcing effect are further designed on the inclined surface of the sand core. Preferably, the inclined plane of the sand core is inclined towards the middle part of the sand core, or the inclined plane of the sand core forms an included angle of 0-7 degrees with the vertical direction. Preferably, the clamping apparatus comprises two clamping plates and locking pieces, wherein the two clamping plates are respectively used for being in contact with the inclined surfaces to achieve the clamping effect, and the at least two locking pieces are used for fastening the sand core, namely, the locking pieces are used for locking the clamping plates, so that the clamping plates can be tightly attached to the inclined surfaces of the sand core. More preferably, the locking parts are at least symmetrically arranged two, so as to fasten the two clamping plates. More preferably, the fixture further comprises a positioning member for making the angle of inclination of the two clamping plates the same as the angle of inclination of the inclined surface of the sand core. The clamping device has the beneficial effects that the sand core and the clamping device are quickly sleeved and positioned in a manner of setting the contact surface of the sand core and the clamping device as an inclined surface, and the clamping structure in the form of the clamping plate is arranged to realize a large-area clamping effect, so that the problems of low clamping efficiency and poor stability caused by the need of arranging a plurality of bolt clamping devices are avoided. Drawings FIG. 1 is a schematic illustration of a sand core construction; FIG. 2 is a schematic diagram of a fixture structure; FIG. 3 is a schematic view of the use of the fixture according to the present invention; wherein, 1-upper sand core, 2-middle sand core, 3-lower sand core, 4-square steel, 5-steel plate and 6-locking piece. Detailed Description In order to more clearly illustrate the technical solution of the present invention, it is obvious that the following description is a few exemplary embodiments of the present invention, and other solutions can be obtained according to these embodiments without inventive effort for a person skilled in the art. In order to solve the problems of large installation and clamping workload and unstable fastening effect caused by the fact that an existing bare casting cor