Tool clamp for chamfering ball opening of valve ball

Abstract

A tool clamp for chamfering a ball opening of a valve ball comprises a four-jaw chuck, four clamping jaws capable of being controlled and adjusted are arranged on the four-jaw chuck, and ball outer circle fixing columns used for clamping and fixing the valve ball are arranged on the surfaces of the sides, away from the center of the four-jaw chuck, of the four clamping jaws. The fixture has the advantages that the four ball outer circle fixing columns are adopted, and the valve ball is fixed by clamping the outer spherical surface of the valve ball, so that damage of the fixture to a valve ball runner is avoided. In addition, the position of the ball opening can be quickly positioned through the ball opening positioning plane, and the fillet machining precision is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of machining, especially relate to a valve ball mouth chamfering tool fixture. BACKGROUND

[0002] Ball valve, it is a commonly used valve, it controls fluid flow through a rotating ball. When the ball is aligned with the pipeline axis, fluid can pass through; and when the ball is rotated 90 degrees, perpendicular to the pipeline axis, fluid is prevented. This design makes the ball valve has fast switching and good sealing performance.

[0003] In the production process of valve ball, the round corner of the ball mouth needs to be turned over, the existing round corner machining clamp is fixed to the valve ball through the support inner hole, and the machining method and machining clamp will cause the clamping mark on the inner wall of the flow channel, resulting in poor flow channel finish. UTILITY MODEL CONTENTS

[0004] To solve the above problems, the utility model provides a valve ball mouth chamfering tool fixture, which clamps the valve ball outer circle for ball mouth chamfering, without damaging the valve ball flow channel.

[0005] A valve ball mouth chamfering tool fixture, comprising a four-jaw chuck, four controllable adjusting clamping jaws are arranged on the four-jaw chuck, and the surface of the four clamping jaws away from the center of the four-jaw chuck is provided with a ball outer circle fixing column for clamping and fixing the valve ball.

[0006] Further, the surface of the ball outer circle fixing column towards the center of the four-jaw chuck is provided with a clamping plane.

[0007] Further, the end of the four clamping jaws close to the center of the four-jaw chuck is provided with a ball mouth positioning plane.

[0008] Further, the ball mouth positioning plane is fan-shaped, and the four ball mouth positioning planes are combined to form a complete annular shape.

[0009] Further, the ball outer circle fixing column is welded and fixed on the clamping jaw at one end, and the other end exceeds the valve ball center and does not exceed the valve ball mouth at the other end.

[0010] The utility model has the advantages that:

[0011] 1. For clamping and fixing the valve ball, four ball outer circle fixing columns are adopted, the valve ball is fixed by clamping the outer surface of the valve ball, so as to avoid damage to the valve ball flow channel caused by the clamp.

[0012] 2. In addition, the ball mouth positioning plane can quickly position the ball mouth position, ensure the chamfering precision, and reduce the clamping time.

[0013] 3, the four-jaw has self-centering function, clamping circular product has better concentricity and runout, which is better than the runout of traditional inner hole supporting tooling, and the chamfer precision is higher.

[0014] 4, the four-jaw stroke is adjustable, has a relatively wide adjustment range, can realize chamfering of ball port of inner hole of multiple diameters, same diameter and arbitrary size, one set of tooling is multi-purpose, reduces tooling cost and is not limited by non-standard inner hole inner supporting tooling, has strong mobility, and does not need to wait for tooling customization. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the tooling fixture for valve ball ball port chamfering.

[0016] Figure 2 It is a structural schematic view of the tooling fixture for valve ball ball port chamfering.

[0017] Figure 3 It is a structural schematic view of the tooling fixture for valve ball ball port chamfering (clamping valve ball state).

[0018] The drawings show that the four-jaw chuck 1, the clamping jaw 2, the spherical outer circle fixing column 3, the clamping plane 4, the ball port positioning plane 5, the valve ball 6, and the ball port 7. DETAILED DESCRIPTION

[0019] The technical scheme in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0020] A tooling fixture for valve ball ball port chamfering, comprising a four-jaw chuck, four controllable adjusting clamping jaws are arranged on the four-jaw chuck, and a spherical outer circle fixing column for clamping and fixing a valve ball is arranged on the surface of each clamping jaw away from the center side of the four-jaw chuck. The surface of the spherical outer circle fixing column towards the center side of the four-jaw chuck is provided with a clamping plane. The end of each clamping jaw close to the center side of the four-jaw chuck is provided with a ball port positioning plane. The ball port positioning plane is fan-shaped, and the four ball port positioning planes combined together are in the shape of a complete ring. One end of the spherical outer circle fixing column is welded and fixed on the clamping jaw, and the other end exceeds the ball center of the valve ball and does not exceed the ball port of the other end of the valve ball.

[0021] The actual operation method is as follows:

[0022] Firstly, the four-jaw chuck is operated, four clamps are moved outward to a suitable position (slightly larger than the valve ball diameter), the side of the valve ball that needs to be chamfered is sent outward, and the other side is sent inward into the middle of the four clamps, then the four-jaw chuck is operated again, the four clamps are moved inward, and slightly inward pressure is applied to the valve ball during the movement process, so that the ball opening is flush with the ball opening positioning plane, and finally the four clamps drive the four spherical body outer circle fixing columns to gradually clamp and fix the valve ball. The chamfering tool can chamfer the ball opening.

[0023] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model, therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, the scope of the utility model is defined by the appended claims instead of the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model.

Claims

1. A tooling fixture for chamfering the orifice of a valve ball, characterized in that, The four-jaw chuck is provided with four controllable adjusting claws, the surface of the four claws away from the center side of the four-jaw chuck is provided with a spherical outer circular fixing column for clamping and fixing the valve ball, the spherical outer circular fixing column is provided with a clamping plane on the surface towards the center side of the four-jaw chuck, the end of the four claws close to the center side of the four-jaw chuck is provided with a ball port positioning plane, the four ball port positioning planes are combined to form a complete annular shape.

2. The tooling fixture of claim 1, wherein: One end of the spherical outer circular fixing column is welded and fixed on the claw, and the other end exceeds the ball center of the valve ball and does not exceed the ball port of the valve ball.

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