CN213532151U

CN213532151U - Planetary initiative flexible ball core grinding processing part of high accuracy

Info

Publication number: CN213532151U
Application number: CN202022361237.6U
Authority: CN
Inventors: 马玉山; 刘海波; 何涛; 马军; 贾华
Original assignee: Wuzhong Instrument Co Ltd
Current assignee: Wuzhong Instrument Co Ltd
Priority date: 2020-10-21
Filing date: 2020-10-21
Publication date: 2021-06-25
Anticipated expiration: 2030-10-21

Abstract

The utility model provides a planetary initiative flexible ball core of high accuracy grinds processing part, including main motor, main motor power take off end is equipped with the connecting plate, two bistrique motors that are symmetrical arrangement are installed to the connecting plate, bistrique motor power output shaft is equipped with the contained angle, bistrique motor drive grinding head part is rotatory. The main motor drives the grinding head component to rotate to form a large processing surface, and the grinding head motor drives the grinding head component to rotate, so that the processing strength is improved, and the problems of long grinding time and high cost of the ball core are solved.

Description

Planetary initiative flexible ball core grinding processing part of high accuracy

Technical Field

The utility model relates to a ball core grinding device technical field specifically is a planetary initiative flexible ball core of high accuracy grinds processing part.

Background

The field of high-end control valves is developed rapidly, and particularly, control valves aiming at severe working conditions such as high pressure, high temperature, ultralow temperature and the like enter a mass production stage; with the development of intelligent manufacturing technology, the current machining efficiency and machining precision gradually become important factors for restricting the development of high-end control valves. The high-end control valve is mainly used for solving the problems of high-efficiency and ultra-precision machining of the out-of-roundness ball core; because the hardness technology of the surface coating of the ball core of the high-end control valve, particularly the large-caliber ball valve is improved, the roundness precision of the ball core is possibly reduced due to clamping, a grinding machine, a processing cutter, a constant temperature/constant humidity environment, a base material and the like in the fine grinding process;

the surface hardness of the currently used slag locking valve, particularly the slag locking valve with the size more than 200 calibers, can reach HRC63 due to the hard alloy sprayed on the surface of the valve core, so that great difficulty is caused to the processing; for a slag locking valve with 300 calibers, the time for grinding the light-emitting surface at the low point of the accessory of the runner opening is very long due to uneven spraying, generally 4 hours are needed for grinding the ball core with higher roundness, and if the local low point exists, the ball core can be ground for more than 8 hours, so that the great waste of surface hardening materials, the loss of grinding materials and machines, the loss of grinding tools and the cost of labor are increased.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the technical problems of long grinding time and high cost of the traditional slag locking valve ball core are solved.

The utility model provides a planetary initiative flexible ball core of high accuracy grinds processing part, including main motor, main motor power take off end is equipped with the connecting plate, two bistrique motors that are symmetrical arrangement are installed to the connecting plate, bistrique motor power output shaft is equipped with the contained angle, bistrique motor drive grinding head part is rotatory.

The main motor drives the grinding head component to rotate to form a large processing surface, and the grinding head motor drives the grinding head component to rotate, so that the processing strength is improved, and the problems of long grinding time and high cost of the ball core are solved.

Furthermore, the section of the outer ring of the connecting plate is wedge-shaped, the necking end of the connecting plate points to the main motor, and the grinding head motor is arranged on the outer ring of the connecting plate. Through the wedge design of the outer ring of the connecting plate, the power output shaft of the grinding head motor is provided with an included angle, and the structure is simple.

Further, the grinding head component comprises a main shaft, and the main shaft is driven by the grinding head motor;

the grinding head is arranged at the lower end of the grinding disc, and a spring is connected between the grinding disc and the pressing plate.

The arrangement of the spring enables the grinding disc to be elastically connected with the main shaft, and the grinding surface of the grinding head is in flexible contact with the ball core, so that the rigid acting force of the grinding head on the ball core is reduced, and the grinding head has the characteristics of small deformation and high precision, and the ball core is not easy to deform; the compression amount of the spring can be adjusted by rotating the pressing plate, and the constant pressure provided by the spring is ensured.

Furthermore, a connecting block is connected between the grinding disc and the spring, a spherical concave arc surface is arranged at the lower end of the connecting block, a spherical convex arc surface corresponding to the concave arc surface is arranged at the upper end of the grinding disc, and the grinding disc is loosely connected with the main shaft through a screw;

the lower end of the main shaft is provided with a square shaft, the grinding disc is provided with a square hole connected with the square shaft in a clamped mode, and an interval is formed between the square shaft and the square hole.

The screw has no fastening effect on the grinding disc and only hangs the grinding disc; the main shaft drives the grinding disc to rotate in a mode that the square shaft is clamped with the square hole; the square hole is spaced from the square shaft, and the angle between the grinding head and the horizontal plane can be adjusted under the action of the concave arc surface and the convex arc surface, so that the grinding precision of the ball core is improved.

Furthermore, the cross section of the square hole is wedge-shaped, and the flaring end of the square hole points to the connecting block. The design enlarges the adjusting angle between the grinding head and the horizontal plane, and the grinding head is more flexible.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a front view of the present invention;

FIG. 2 is a front view of the grinding head component;

FIG. 3 is a cross-sectional view taken at A-A in FIG. 2;

in the figure: 1. a main motor; 2. a connecting plate; 3. a grinding head motor; 4. a grinding head part; 41. a main shaft; 42. Pressing a plate; 43. a grinding disc; 44. grinding heads; 45. a spring; 46. connecting blocks; 47. a screw; 411. a square shaft; 431. a convex arc surface; 432. a square hole; 461. a concave arc surface.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

As shown in fig. 1, the utility model relates to a planetary initiative flexible ball core grinding processing part of high accuracy, including main motor 1, main motor 1 power take off end is equipped with connecting plate 2, the cross-section of connecting plate 2 outer lane is set to be wedge, its throat end points to main motor 1, two grinding head motors 3 that are arranged symmetrically are installed to connecting plate 2 outer lane, grinding head motor 3 drives grinding head part 4 to rotate;

as shown in fig. 2, the grinding head unit 4 includes a spindle 41, and the spindle 41 is fixedly connected to an output shaft of the grinding head motor 3 through a coupling; the main shaft 41 is in threaded connection with a pressing plate 42, the lower end of the main shaft 41 is connected with a connecting block 46, the lower end of the connecting block 46 is connected with a grinding disc 43, the lower end of the grinding disc 43 is provided with a grinding head 44, and a spring 45 is connected between the connecting block 46 and the pressing plate 42; the lower end of the connecting block 46 is provided with a spherical concave cambered surface 461, the upper end of the grinding disc 43 is provided with a spherical convex cambered surface 431 corresponding to the concave cambered surface 461, and the grinding disc 43 is loosely connected with the main shaft 41 through a screw 47; a square shaft 411 is arranged at the lower end of the main shaft 41, a square hole 432 clamped with the square shaft 411 is arranged on the grinding disc 43, and a distance is arranged between the square shaft 411 and the square hole 432; the cross section of the square hole 432 is wedge-shaped, and the flaring end of the square hole points to the connecting block 46; the arrangement of the spring 45 enables the grinding disc 43 to be elastically connected with the main shaft 41, and the grinding surface of the grinding head 44 is in flexible contact with the ball core, so that the rigid acting force of the grinding head 44 on the ball core is reduced, and the ball core has the characteristics of small deformation and high precision and is not easy to deform; the compression amount of the spring 45 can be adjusted by rotating the pressure plate 42, so that the spring 45 can provide constant pressure; the screw 47 has no fastening effect on the grinding disc 43, but only hangs the grinding disc; the main shaft 41 drives the grinding disc 43 to rotate in a manner that the square shaft 411 is clamped with the square hole 432; as shown in fig. 3, a space is provided between the square hole 432 and the square shaft 411, and the angle between the grinding head 44 and the horizontal plane can be adjusted under the action of the concave arc surface 461 and the convex arc surface 431, so that the grinding precision of the ball core is improved; the wedge-shaped design of the square hole 432 enlarges the adjusting angle of the grinding head 44 and the horizontal plane, so that the grinding head 44 is more flexible;

the main motor 1 drives the grinding head component 4 to rotate to form a large processing surface, and the grinding head motor 3 drives the grinding head component 4 to rotate, so that the processing strength is improved, and the problems of long grinding time and high cost of the ball core are solved.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a planetary initiative flexible ball core grinding process part of high accuracy which characterized in that: including main motor (1), main motor (1) power take off end is equipped with connecting plate (2), two bistrique motors (3) that are symmetrical arrangement are installed to connecting plate (2), bistrique motor (3) power output shaft is equipped with the contained angle, bistrique motor (3) drive grinds head spare (4) and rotates.

2. The high precision planetary active flexible core grinding machining part according to claim 1, characterized in that: the section of the outer ring of the connecting plate (2) is wedge-shaped, the reducing end of the connecting plate points to the main motor (1), and the grinding head motor (3) is installed on the outer ring of the connecting plate (2).

3. The high precision planetary active flexible core grinding machining part according to claim 1, characterized in that: the grinding head part (4) comprises a main shaft (41), and the main shaft (41) is driven by the grinding head motor (3);

the grinding wheel is characterized in that the main shaft (41) is in threaded connection with a pressing plate (42), the lower end of the main shaft (41) is connected with a grinding disc (43), the lower end of the grinding disc (43) is provided with a grinding head (44), and a spring (45) is connected between the grinding disc (43) and the pressing plate (42).

4. A high precision planetary active flexible core grinding tool according to claim 3, characterized by: a connecting block (46) is further connected between the grinding disc (43) and the spring (45), a spherical concave arc surface (461) is arranged at the lower end of the connecting block (46), a spherical convex arc surface (431) corresponding to the concave arc surface (461) is arranged at the upper end of the grinding disc (43), and the grinding disc (43) is loosely connected with the main shaft (41) through a screw (47);

the lower end of the main shaft (41) is provided with a square shaft (411), the grinding disc (43) is provided with a square hole (432) connected with the square shaft (411) in a clamped mode, and a distance is arranged between the square shaft (411) and the square hole (432).

5. The high precision planetary active flexible core grinding machining part according to claim 4, characterized in that: the cross section of the square hole (432) is wedge-shaped, and the flaring end of the square hole points to the connecting block (46).