CN217044656U - Special built-in chuck for ball valve core - Google Patents

Abstract

The utility model belongs to the technical field of machining lathe's fixture equipment, especially, relate to a special built-in chuck of ball case, its characterized in that is including lining up in waiting to process the inside dress trip shaft of ball case, through the chuck body of key-type connection with this dress trip shaft, along the several jack catch group that this chuck body circumference set up, set up the set screw on the chuck body, several jack catch group top is tight wait to process ball case inner wall on, every jack catch group include with chuck body threaded connection's lead screw prevents the jack catch of swivel bearing and lead screw end connection through the jack catch. The utility model discloses a special built-in chuck of ball valve core alleviates workman manipulation strength, improves production efficiency, guarantees that ball valve core precision guarantees that the ball valve core restores if new, improves the ball valve utilization ratio, reduction equipment cost.

Description

Special built-in chuck for ball valve core

Technical Field

The utility model belongs to the technical field of machining lathe's fixture equipment, especially, relate to a special built-in chuck of ball case.

Background

The metallurgical mine has a large number of ball valves, and the original precision can still be recovered through repair welding and machining after the surface of a ball body of a ball valve core is abraded. However, when a common chuck is used for installing the ball clamping valve core, the machining requirement cannot be met in one station, the channel hole at the left end of the ball clamping valve core is mainly aligned by the aid of the four-jaw chuck on the main shaft, and the right end hole is assisted by the aid of a special taper center of a lathe tailstock for machining. The alignment is time-consuming and labor-consuming, and the ball valve core is disassembled and rotated for 180 degrees two-time clamping and reprocessing are needed after the right end is processed.

Disclosure of Invention

The utility model aims at providing a special built-in chuck of ball case guarantees that ball case restores if new, improves ball valve utilization ratio reduction equipment cost.

The purpose of the utility model is realized by the following technical scheme:

the utility model discloses a special built-in chuck for ball valve core, which is characterized in that the chuck comprises a clamping shaft penetrating the inner part of the ball valve core to be processed, a chuck body connected with the clamping shaft through a key, a plurality of clamping jaw groups arranged along the circumference of the chuck body, and a positioning screw arranged on the chuck body, wherein the plurality of clamping jaw groups are tightly pressed on the inner wall of the ball valve core to be processed,

each clamping jaw group comprises a screw rod in threaded connection with the chuck body, and clamping jaws connected with the end portions of the screw rod through clamping jaw anti-rotation bearings.

The joint of the claw anti-rotation bearing and the end part of the screw rod is provided with a circlip for a hole.

The utility model has the advantages that:

the utility model discloses a special built-in chuck of ball valve core alleviates workman manipulation strength, improves production efficiency, guarantees the ball valve core precision and guarantees that the ball valve core restores if new, improves the ball valve utilization ratio, reduction equipment cost.

Drawings

Fig. 1 is a schematic view of the assembly structure of the present invention.

Fig. 2 is an exploded schematic view of the present invention.

Fig. 3 is a schematic structural view of the jaw set of the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings.

As shown in figures 1, 2 and 3, the special built-in chuck for ball valve core of the utility model is characterized in that the chuck comprises a chucking shaft 1 penetrating the inner part of the ball valve core to be processed, a chuck body 3 connected with the chucking shaft 1 through a key 2, a plurality of clamping jaw groups 5 arranged along the circumference of the chuck body 3, a positioning screw 4 arranged on the chuck body 3, and the plurality of clamping jaw groups 5 are tightly propped against the inner wall of the ball valve core to be processed,

each jaw group 5 comprises a screw rod 5.1 in threaded connection with the chuck body 3, and jaws 5.4 connected with the end parts of the screw rod 5.1 through jaw anti-rotation bearings 5.3.

The joint of the jaw anti-rotation bearing 5.3 and the end part of the screw rod 5.1 is provided with a circlip 5.2 for holes.

The utility model discloses a special built-in chuck of ball valve core is formed by ordinary steel through machining. The structure is as follows, a clamping shaft 1, a key 2, a clamping disc body 3, a positioning screw 4 and a clamping jaw group 5 are installed.

The ball valve core to be processed is provided with a through hole which penetrates through the ball body to form two large circular hole section planes. The clamping shaft 1 penetrates through a through hole penetrating through the ball body, and two built-in chucks are arranged at the cross-sectional planes of the two round holes. The jaw group 5 of each built-in chuck is tightly propped against the section plane of the circular hole. The screw rod 5.1 of the jaw group 5 is adjustable, and the jaws 5.4 are anti-rotation jaws which can be firmly propped against the section plane of the circular hole.

The two ends of the clamping shaft 1 are provided with center holes which can be clamped by the centers of the lathe head and the tailstock. The length of the clamping shaft 1 is determined by the space required by the lathe tool post for processing two ends of the ball hole. The two built-in chucks coordinate to align, so that the precision of the workpiece is ensured.

After the special built-in chuck for the ball valve core is installed, the ball valve core can be positioned.

The utility model discloses a special built-in chuck of ball valve core guarantees that the ball valve core restores if new, improves ball valve utilization ratio reduction equipment cost.

Claims (2)

1. A built-in chuck special for a ball valve core is characterized by comprising a clamping shaft penetrating through the inner part of the ball valve core to be processed, a chuck body connected with the clamping shaft through a key, a plurality of clamping jaw groups arranged along the circumference of the chuck body, and a positioning screw arranged on the chuck body, wherein the plurality of clamping jaw groups are tightly propped against the inner wall of the ball valve core to be processed,

each clamping jaw group comprises a screw rod in threaded connection with the chuck body, and clamping jaws connected with the end portions of the screw rod through clamping jaw anti-rotation bearings.

2. The special built-in chuck for the ball valve core according to claim 1, wherein the connection between the claw anti-rotation bearing and the end of the lead screw is provided with a circlip for a hole.

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