CN216461491U

CN216461491U - Crankshaft structure of eight-station and more than eight-station cold heading forming machine

Info

Publication number: CN216461491U
Application number: CN202122761090.4U
Authority: CN
Inventors: 邵磊; 徐家峰; 梅黎明
Original assignee: Sijin Intelligent Forming Machinery Co ltd
Current assignee: Sijin Intelligent Forming Machinery Co ltd
Priority date: 2021-11-12
Filing date: 2021-11-12
Publication date: 2022-05-10
Anticipated expiration: 2031-11-12

Abstract

The utility model relates to a crankshaft structure of an eight-station and above-eight-station cold heading forming machine, which comprises a platform, a crankshaft, a sliding table and two main connecting rods, wherein the crankshaft comprises a middle shaft shoulder, a crank throw, a left shaft shoulder and a right shaft shoulder which are sequentially arranged from the middle to two sides, the left shaft shoulder and the right shaft shoulder are arranged on the platform, one end of each main connecting rod is connected with the crank throw, the other end of each main connecting rod is connected with the sliding table through a main connecting rod pin, a supporting boss is arranged on the platform, and the middle shaft shoulder is arranged on the supporting boss. The crankshaft structure of the cold heading forming machine with eight stations and more than eight stations, which is obtained by the utility model, has the following advantages: simple structure, long service life, high precision, high strength, stable operation and convenient disassembly, assembly and replacement.

Description

Crankshaft structure of eight-station and more than eight-station cold heading forming machine

Technical Field

The utility model relates to a part of a cold heading forming machine, in particular to a crankshaft structure of an eight-station and above-eight-station cold heading forming machine.

Background

In the prior art, a crankshaft on a cold header is generally connected with a single connecting rod through a single crank throw to push a sliding table to do linear motion, but in an eight-station or more than eight-station cold header, the working pressure is high, the main connecting rod and the crankshaft are quickly abraded, and the precision of equipment is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects of the technology and provide a crankshaft structure of an eight-station and more than eight-station cold heading forming machine, which has long service life and high precision.

The utility model provides a crankshaft structure of an eight-station and above-eight-station cold heading forming machine, which comprises a platform, a crankshaft, a sliding table and two main connecting rods, wherein the crankshaft comprises a middle shaft shoulder, a crank throw, a left shaft shoulder and a right shaft shoulder which are sequentially arranged from the middle to two sides, the left shaft shoulder and the right shaft shoulder are arranged on the platform, one end of each main connecting rod is connected with the crank throw, the other end of each main connecting rod is connected with the sliding table through a main connecting rod pin, a supporting boss is arranged on the platform, and the middle shaft shoulder is arranged on the supporting boss.

In order to ensure the stress balance of the crankshaft during working, the table surface of the supporting boss is vertical to the working pressure direction of the crankshaft, and the included angle between the stress center and the horizontal plane is about 20 degrees to form a pressure angle during the working of the crankshaft.

For the convenience of installation is fixed, be equipped with middle axle sleeve between middle shaft shoulder and this platform, middle axle sleeve includes left semicircle and right semicircle, through the round pin hub fixation between left semicircle and the right semicircle, through the fix with screw between middle axle sleeve and this platform, be clearance fit between middle axle sleeve and the middle shaft shoulder, the screw sets up along bent axle operating pressure direction, has the angle of inclination with the same angle of pressure angle between screw and the horizontal plane promptly.

In order to prevent the bending deformation of the main connecting rod pin, a connecting rod pin pressing cover is arranged between the two main connecting rods, the main connecting rod pin is arranged between the connecting rod pin pressing cover and the sliding table, a groove matched with the main connecting rod pin is formed in the connecting rod pin pressing cover, and the connecting rod pin pressing cover and the sliding table are fastened through screws.

In order to rotate more smoothly, a left shaft sleeve and a right shaft sleeve are arranged between the left shaft shoulder and the right shaft shoulder and the platform.

The crankshaft structure of the cold heading forming machine with eight stations and more than eight stations, which is obtained by the utility model, has the following advantages: simple structure, long service life, high precision, high strength, stable operation and convenient disassembly, assembly and replacement.

Drawings

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

fig. 2 is an installation schematic view of an intermediate sleeve of embodiment 1 of the present invention;

fig. 3 is a schematic view of the installation of the link pin gland of embodiment 1 of the utility model;

FIG. 4 is a schematic structural view of a crankshaft in embodiment 2 of the utility model;

fig. 5 is a schematic structural view of a link pin cover according to embodiment 2 of the present invention.

In the figure: the novel bearing comprises a platform 1, a crankshaft 2, a sliding table 3, a main connecting rod 4, a middle shaft shoulder 5, a crank 6, a left shaft shoulder 7, a right shaft shoulder 7, a main connecting rod pin 8, a supporting boss 9, a middle shaft sleeve 10, a left semicircle 11, a right semicircle 12, a screw 13, a connecting rod pin gland 14, a groove 15 and a left shaft sleeve 16 and a right shaft sleeve 16.

Detailed Description

To further illustrate the technical means and effects of the present invention for achieving the intended purpose of the utility model, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

Example 1:

the bent axle structure of eight stations and above eight stations cold-heading make-up machines that this embodiment provided, as shown in fig. 1-5, including this platform 1, bent axle 2, slip table 3 and two main connecting rod 4, bent axle 2 includes from middle shaft shoulder 5, crank 6 that set gradually to both sides and controls shaft shoulder 7, controls shaft shoulder 7 and sets up on this platform 1, and main connecting rod 4 one end is connected with crank 2, and the other end passes through main connecting rod round pin 8 and is connected with slip table 3, is equipped with on this platform 1 and supports boss 9, and middle shaft shoulder 5 sets up on supporting boss 9.

In order to ensure the stress balance of the crankshaft 2 during working, the table surface of the supporting boss 9 is vertical to the working pressure direction of the crankshaft 2, and the included angle between the stress center and the horizontal plane is about 20 degrees when the crankshaft 2 works, so that a pressure angle is formed.

In order to facilitate installation and fixation, a middle shaft sleeve 10 is arranged between the middle shaft shoulder 5 and the platform 1, the middle shaft sleeve 10 comprises a left semicircle 11 and a right semicircle 12, the left semicircle 11 and the right semicircle 12 are fixed through a pin shaft, the middle shaft sleeve 10 and the platform 1 are fixed through a screw 13, the middle shaft sleeve 10 and the middle shaft shoulder 5 are in clearance fit, the screw 13 is arranged along the working pressure direction of the crankshaft 2, namely, an inclined angle is formed between the screw 13 and the horizontal plane, and the inclined angle is the same as the pressure angle.

In order to prevent the bending deformation of the main link pin 8, a link pin gland 14 is arranged between the two main links 4, the main link pin 8 is arranged between the link pin gland 14 and the sliding table 3, a groove 15 matched with the main link pin 8 is arranged on the link pin gland 14, and the link pin gland 14 and the sliding table 4 are fastened through screws.

Left and right bushings 16 are provided between the left and right shoulders 7 and the base 1 for smooth rotation.

Through the design, the rigidity of the crankshaft 2 is increased due to the design of the two crank throws 6 on the crankshaft 2, the two crank throws 6 are connected with the two main connecting rods 4, the stress is balanced, the weight of a single main connecting rod 4 is reduced, the friction force is reduced, the abrasion loss is reduced, the service life is prolonged, the precision of equipment is ensured, the supporting boss 9 can support the middle shaft shoulder 5, the crankshaft 2 rotates to drive the main connecting rods 4 when in use, and the main connecting rods 4 drive the sliding table 3 to do reciprocating linear motion through the main connecting rod pins 8; the table surface of the supporting boss 9 is vertical to the working pressure direction of the crankshaft 2, so that the supporting performance of the crankshaft 2 during working is ensured, the stress of the crankshaft 2 during working is balanced, the crankshaft 2 is ensured to move stably, and when the crankshaft 2 does not work, the gravity of the crankshaft 2 is also well supported and is obliquely upwards opened, so that the crankshaft 2 is convenient to mount and dismount; the design of the middle shaft sleeve 10 is more beneficial to the rotation of the crankshaft 2, the middle shaft sleeve 10 is separately designed to comprise a left semicircle 11 and a right semicircle 12, the middle shaft shoulder 5 is convenient to put in, the screw 13 is arranged along the working pressure direction of the crankshaft 2, the stress of the screw 13 is good when in work, and the fixation is more stable and firm; when the two main connecting rods 4 act on the sliding table 3 through the main connecting rod pins 8, the main connecting rod pins 8 are stressed to bend towards the middle, so that the stress is unbalanced, the cold heading forming precision is influenced, and the design of the connecting rod pin gland 14 can prevent the middle of the main connecting rod pins 8 from bending and deforming and ensure the precision; the left and right bushings 16 are designed to facilitate rotation of the crankshaft 2.

The device simple structure, long service life, the precision is high, and intensity is high, operates steadily, and the dismouting is changed conveniently.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. The utility model provides a bent axle structure of eight stations and above eight stations cold-heading make-up machines, includes this platform (1), bent axle (2), slip table (3) and two main connecting rod (4), its characterized in that bent axle (2) including from middle shaft shoulder (5), crank (6) that set gradually to both sides and control shaft shoulder (7), control shaft shoulder (7) and set up on this platform (1), main connecting rod (4) one end is connected with crank (6), the other end passes through main connecting rod round pin (8) and is connected with slip table (3), is equipped with on this platform (1) and supports boss (9), middle shaft shoulder (5) set up on supporting boss (9).

2. The crankshaft structure of an eight-station and above eight-station cold heading forming machine according to claim 1, which is characterized in that: the table surface of the supporting boss (9) is vertical to the working pressure direction of the crankshaft (2).

3. The crankshaft structure of an eight-station and above eight-station cold heading forming machine according to claim 2, characterized in that: be equipped with middle axle sleeve (10) between middle shaft shoulder (5) and this platform (1), middle axle sleeve (10) are including left semicircle (11) and right semicircle (12), and fixed through round pin axle between left semicircle (11) and the right semicircle (12), and fixed through screw (13) between middle axle sleeve (10) and this platform (1).

4. The crankshaft structure of an eight-station and above eight-station cold heading forming machine according to claim 3, wherein: be equipped with connecting rod round pin gland (14) between two main connecting rod (4), main connecting rod round pin (8) set up between connecting rod round pin gland (14) and slip table (3), be equipped with on connecting rod round pin gland (14) with main connecting rod round pin (8) complex recess (15).

5. The crankshaft structure of an eight-station and more than eight-station cold heading forming machine according to claim 1, 2, 3 or 4, wherein: a left shaft sleeve (16) and a right shaft sleeve (16) are arranged between the left shaft shoulder (7) and the right shaft shoulder (7) and the platform (1).