阅读说明：本技术 一种可调节曲柄半径的压力机实验台 (Press machine experiment table capable of adjusting crank radius ) 是由 邱俊 王德伦 王智 唐首臣 于 2020-06-08 设计创作，主要内容包括：一种可调节曲柄半径的压力机实验台,包括压力机和用于摆放压力机的实验台,压力机包括可调曲柄半径的曲轴、连杆组件、滑块组件以及箱体；可调曲柄半径的曲轴包括偏心轮组、直轴、键以及紧定螺钉,曲轴通过设置轴承座安装到箱体上；连杆组件设置在曲轴的外侧,且连杆组件包括上连杆和下连杆；其技术要点为,可增强曲轴可调性,通过改变偏心轮的个数调整曲轴上曲拐的个数,或是更换不同型号的偏心轮来改变曲轴半径,可以按照实际需要迅速组装成所需曲轴；通过将直轴与偏心轮组进行装配连接,组成曲轴的各个零件可进行分别加工,从而降低了加工难度,节约成本。(A press machine experiment table capable of adjusting the radius of a crank comprises a press machine and an experiment table for placing the press machine, wherein the press machine comprises a crank shaft with the adjustable radius of the crank, a connecting rod assembly, a sliding block assembly and a box body; the crankshaft with the adjustable crank radius comprises an eccentric wheel set, a straight shaft, a key and a set screw, and is installed on the box body through a bearing seat; the connecting rod assembly is arranged on the outer side of the crankshaft and comprises an upper connecting rod and a lower connecting rod; the technical key points are that the adjustability of the crankshaft can be enhanced, the number of the crank throws on the crankshaft can be adjusted by changing the number of the eccentric wheels, or the radius of the crankshaft can be changed by replacing eccentric wheels with different types, and the required crankshaft can be quickly assembled according to actual needs; through carrying out assembled joint with straight axle and eccentric wheelset, each part of constituteing the bent axle can be processed respectively to reduce the processing degree of difficulty, practiced thrift the cost.)

1. The utility model provides an adjustable crank radius's press laboratory bench, includes the press and is used for putting the laboratory bench of press, its characterized in that: the press comprises a crankshaft with an adjustable crank radius, a connecting rod assembly, a sliding block assembly and a box body (12);

the crankshaft with the adjustable crank radius comprises an eccentric wheel set, a straight shaft (7), a key (6) and a set screw (8), the crankshaft is installed on a box body (12) through a bearing seat (14), and the bearing seat (14) is installed at one side of the top end of the box body (12) in an erected mode;

the connecting rod assembly is arranged on the outer side of the crankshaft and comprises an upper connecting rod (3) and a lower connecting rod (9);

the sliding block assembly comprises an upper sliding block (1) and a lower sliding block (11), the upper sliding block (1) is connected with the upper connecting rod (3) in an assembling mode, and the lower sliding block (11) is connected with the lower connecting rod (9) in an assembling mode;

the upper sliding block (1) is arranged on the surface of the box body (12) through an upper guide rail (13), the lower sliding block (11) is arranged on the surface of the box body (12) through a lower guide rail (15), and the upper guide rail and the lower guide rail are respectively arranged at the positions, located on the two sides of the crankshaft, of the surface of the box body (12).

2. An adjustable crank radius press bench as claimed in claim 1, wherein: one end of the upper connecting rod (3) is connected with the crankshaft in an assembling mode, the other end of the upper connecting rod is connected with the upper sliding block (1) through the upper sliding block pin shaft (2), one end of the lower connecting rod (9) is connected with the crankshaft in an assembling mode, and the other end of the lower connecting rod is connected with the lower sliding block (11) through the lower sliding block pin shaft (10).

3. An adjustable crank radius press bench as claimed in claim 1, wherein: the eccentric wheel set comprises a main eccentric wheel (4) and an auxiliary eccentric wheel (5), the eccentric distances of the main eccentric wheel (4) and the auxiliary eccentric wheel (5) are different, and crankshafts with different crank radiuses can be formed by installing the eccentric wheel sets with different eccentric distances above the box body (12).

4. An adjustable crank radius press bench as claimed in claim 3, wherein: the straight shaft (7) is inserted into preset inner holes in the main eccentric wheel (4) and the auxiliary eccentric wheel (5).

5. An adjustable crank radius press bench as claimed in claim 1, wherein: the key (6) is arranged between the inner wall of the main eccentric wheel (4) and the straight shaft (7) and restrains the circumferential motion of the main eccentric wheel (4).

6. An adjustable crank radius press bench as claimed in claim 1, wherein: the set screw (8) is arranged on the surface of the auxiliary eccentric wheel (5) and restrains the circumferential motion of the auxiliary eccentric wheel (5), and the eccentric wheel set restrains the axial motion of the eccentric wheel set through a shaft shoulder of the straight shaft (7) and the set screw (8) on the eccentric wheel at the outer side.

Technical Field

The invention belongs to the technical field of teaching experimental instruments and equipment, and particularly relates to a press machine experiment table capable of adjusting the radius of a crank.

Background

The press is a universal press with exquisite structure. The press machine has the characteristics of wide application, high production efficiency and the like, and can be widely applied to processes of cutting, punching, blanking, bending, riveting, forming and the like. The metal is processed into parts by applying a strong pressure to the metal blank to cause plastic deformation and fracture of the metal.

In the teaching of mechanical basic experiments, the scale of a mechanism has great influence on the performance of a machine; the crankshaft of the existing press is mostly fixed and cannot be disassembled for adjustment. Therefore, the invention designs the press machine experiment table capable of adjusting the radius of the crank.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a press machine experiment table capable of adjusting the radius of a crank.

In order to achieve the purpose, the invention adopts the following technical scheme:

a press machine experiment table capable of adjusting the radius of a crank comprises a press machine and an experiment table for placing the press machine, wherein the press machine comprises a crank shaft with the adjustable radius of the crank, a connecting rod assembly, a sliding block assembly and a box body;

the crankshaft with the adjustable crank radius comprises an eccentric wheel set, a straight shaft, a key and a set screw, the crankshaft is installed on the box body through a bearing seat, and the bearing seat is installed at one side of the top end of the box body in an erected mode;

the connecting rod assembly is arranged on the outer side of the crankshaft and comprises an upper connecting rod and a lower connecting rod;

the sliding block assembly comprises an upper sliding block and a lower sliding block, the upper sliding block is connected with the upper connecting rod in an assembling mode, and the lower sliding block is connected with the lower connecting rod in an assembling mode;

the upper sliding block is arranged on the surface of the box body through the upper guide rail, the lower sliding block is arranged on the surface of the box body through the lower guide rail, and the upper guide rail and the lower guide rail are respectively arranged at the positions, located on the two sides of the crankshaft, on the surface of the box body.

Preferably, one end of the upper connecting rod is connected with the crankshaft in an assembling mode, the other end of the upper connecting rod is connected with the upper sliding block through an upper sliding block pin shaft, one end of the lower connecting rod is connected with the crankshaft in an assembling mode, and the other end of the lower connecting rod is connected with the lower sliding block through a lower sliding block pin shaft.

Preferably, the eccentric wheel set comprises a main eccentric wheel and an auxiliary eccentric wheel, the eccentric distances of the main eccentric wheel and the auxiliary eccentric wheel are different, and crankshafts with different crank radiuses can be formed by installing the eccentric wheel sets with different eccentric distances above the box body.

Preferably, the straight shaft is inserted into a preset inner hole inside the main eccentric wheel and the auxiliary eccentric wheel.

Preferably, the key is disposed between an inner wall of the main eccentric wheel and the straight shaft, and restricts circumferential movement of the main eccentric wheel.

Preferably, the set screw is arranged on the surface of the auxiliary eccentric wheel and restrains the circumferential motion of the auxiliary eccentric wheel, and the eccentric wheel group restrains the axial motion of the eccentric wheel group through a shaft shoulder of the straight shaft and the set screw on the eccentric wheel at the outer side.

Compared with the prior art, the invention provides a press machine experiment table capable of adjusting the radius of a crank, which has the following beneficial effects:

the adjustability of the crankshaft can be enhanced, the number of the crank throws on the crankshaft can be adjusted by changing the number of the eccentric wheels, or the radius of the crankshaft can be changed by replacing eccentric wheels with different types, and the required crankshaft can be quickly assembled according to actual requirements;

through carrying out assembled joint with straight axle and eccentric wheelset, each part of constituteing the bent axle can be processed respectively to reduce the processing degree of difficulty, practiced thrift the cost.

Drawings

FIG. 1 is a top plan view of the overall structure of the present invention;

FIG. 2 is a side view of the overall structure of the present invention;

fig. 3 is a schematic view of the crankshaft structure of the present invention.

Reference numerals: 1. an upper slide block; 2. an upper slider pin shaft; 3. an upper connecting rod; 4. a main eccentric wheel; 5. an auxiliary eccentric wheel; 6. a key; 7. a straight shaft; 8. tightening the screw; 9. a lower connecting rod; 10. a lower slider pin shaft; 11. a lower slide block; 12. a box body; 13. a lower guide rail; 14. a bearing seat; 15. and an upper guide rail.

The drawings described herein are for illustration purposes only of embodiments of the invention and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for facilitating the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. Those skilled in the art, guided by the present invention, can select various possible shapes and proportional sizes to implement the invention according to specific situations.

Detailed Description

The following further describes a specific embodiment of the press experiment table with adjustable crank radius according to the present invention with reference to fig. 1. The press bench of the present invention, which can adjust the crank radius, is not limited to the description of the following embodiments.

The embodiment provides a concrete structure of a press machine experiment table capable of adjusting the crank radius, and as shown in fig. 1-3, the press machine experiment table capable of adjusting the crank radius comprises a press machine and an experiment table for placing the press machine, wherein the press machine comprises a crankshaft with the adjustable crank radius, a connecting rod assembly, a sliding block assembly and a box body 12;

the crankshaft with the adjustable crank radius comprises an eccentric wheel set, a straight shaft 7, a key 6 and a set screw 8, the crankshaft is arranged on a box body 12 through a bearing seat 14, and the bearing seat 14 is arranged at one side of the top end of the box body 12 in an erected mode;

the connecting rod assembly is arranged on the outer side of the crankshaft and comprises an upper connecting rod 3 and a lower connecting rod 9;

the sliding block assembly comprises an upper sliding block 1 and a lower sliding block 11, the upper sliding block 1 is connected with the upper connecting rod 3 in an assembling mode, and the lower sliding block 11 is connected with the lower connecting rod 9 in an assembling mode;

the upper slider 1 is mounted on the surface of the box body 12 by arranging an upper guide rail 13, the lower slider 11 is mounted on the surface of the box body 12 by arranging a lower guide rail 15, and the upper and lower guide rails are respectively arranged at the positions of the surface of the box body 12 at the two sides of the crankshaft.

As shown in fig. 1, one end of the upper connecting rod 3 is connected to the crankshaft, the other end is connected to the upper slider 1 by the upper slider pin 2, one end of the lower connecting rod 9 is connected to the crankshaft, and the other end is connected to the lower slider 11 by the lower slider pin 10.

The connecting ends of the upper and lower connecting rods and the crankshaft are large ends, and the connecting ends of the upper and lower connecting rods and the upper and lower sliding blocks are small ends;

as shown in fig. 1 and 3, the eccentric wheel set comprises a main eccentric wheel 4 and a secondary eccentric wheel 5, the eccentric distances of the main eccentric wheel 4 and the secondary eccentric wheel 5 are different, and crankshafts with different crank radiuses can be formed by installing the eccentric wheel sets with different eccentric distances above the box body 12; the adjustability of the crankshaft can be enhanced, the number of the crank throws on the crankshaft can be adjusted by changing the number of the eccentric wheels, or the radiuses of the crankshaft can be changed by replacing the eccentric wheels with different models, and the required crankshaft can be quickly assembled according to actual needs.

As shown in fig. 3, the straight shaft 7 is inserted into a preset inner hole inside the primary eccentric wheel 4 and the secondary eccentric wheel 5; through carrying out assembled joint with straight axle 7 and eccentric wheelset, each part of constituteing the bent axle can be processed respectively to reduce the processing degree of difficulty, practiced thrift the cost.

As shown in fig. 3, the key 6 is provided at a position between the inner wall of the main eccentric 4 and the straight shaft 7, and restrains the circumferential movement of the main eccentric 4.

As shown in fig. 1-3, a set screw 8 is arranged on the surface of the secondary eccentric wheel 5 and restrains the circumferential motion of the secondary eccentric wheel 5, and the eccentric wheel set restrains the axial motion of the eccentric wheel set through a shaft shoulder of the straight shaft 7 and the set screw 8 on the outer eccentric wheel.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.