CN218518190U

CN218518190U - Novel butterfly valve body shaft hole machining tool with self-centering function

Info

Publication number: CN218518190U
Application number: CN202222759394.1U
Authority: CN
Inventors: 孙建霞; 韩同星
Original assignee: Weilong Valve Co ltd
Current assignee: Weilong Valve Co ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-02-24
Anticipated expiration: 2032-10-19

Abstract

The utility model discloses a novel butterfly valve body shaft hole processing tool with self-centering function, which comprises a base; a round hole is formed in the center of the base; the upper plane of the base is provided with two symmetrical holes which are symmetrically arranged on the transverse axis of the round hole of the base; and a first positioning pin and a second positioning pin are respectively arranged in the symmetrical holes. The problem of the butterfly valve body shaft hole processing centering precision low is solved.

Description

Novel butterfly valve body shaft hole machining tool with self-centering function

Technical Field

The utility model belongs to the technical field of the valve processing, concretely relates to novel butterfly valve body shaft hole processing frock that has from centering function.

Background

A butterfly valve refers to a valve in which a closing member (a valve flap or a butterfly plate) is a disk and rotates around a valve shaft to open and close. The valve has good flow regulation function and closing sealing property, and is one of the fastest valve varieties developed in the last ten years.

In order to meet market demands, the valve is designed and researched, and meanwhile difficulty is brought to valve manufacturing. If processing the valve body shaft hole, traditional clamping mode is put the valve body passageway hole on the base, and through tang and the cooperation centering of valve body passageway inner circle on the base, this kind of centering mode is fixed centering, and every work piece all leans on same tang to center promptly, and centering precision just receives the inner circle size influence of every work piece like this, and repeated centering precision is low, leads to valve rod shaft hole and passageway hole symmetry ultra-poor, makes the butterfly plate compression volume inhomogeneous, and sealing performance is unstable. In order to improve the centering precision and reduce the size influence, the processing size precision of the previous procedure is required to be high, and the production cost is increased.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a novel butterfly valve body shaft hole processing frock that has from centering function can solve the low problem of centering precision.

In order to achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a novel butterfly valve body shaft hole processing tool with self-centering function, which comprises a base; a round hole is formed in the center of the base; the upper plane of the base is provided with two symmetrical holes which are symmetrically arranged on the transverse axis of the round hole of the base; and a first positioning pin and a second positioning pin are respectively arranged in the symmetrical holes.

Furthermore, two key grooves are formed in the lower plane of the base and symmetrically arranged on the longitudinal axis of the round hole of the base; and a first flat key and a second flat key are respectively arranged in the key grooves.

Furthermore, the base is arranged on a machine tool workbench, and two grooves are formed in the upper surface of the machine tool workbench.

Furthermore, the grooves are symmetrically arranged in the direction of the longitudinal axis of the circular hole of the base; and the first flat key and the second flat key on the base are matched with the groove to fix the base on the machine tool workbench.

Further, a valve body is arranged on the base; and the inner ring of the valve body is attached to the positioning pin.

Furthermore, pressing plates are arranged at the bulges at the left end and the right end of the valve body; the pressing plate presses the upper surface of the protrusion.

Further, two pressure plates are arranged; and the pressing plate is provided with a round hole.

Furthermore, the press plate circular hole penetrates through a bolt, and the lower end of the bolt props against the upper surface of the machine tool workbench.

Furthermore, the upper end of the bolt is sequentially provided with a gasket and a nut.

Furthermore, a plurality of symmetrical holes can be symmetrically arranged in the transverse axis direction of the round hole of the base; and positioning pins are arranged in the symmetrical holes.

The beneficial effects of the utility model are that:

1. the utility model discloses set up first locating pin and second locating pin, the locating pin is installed in the symmetric hole, and locating pin and the cooperation of valve body passageway inner circle do not receive the influence of passageway hole processing deviation, and the location is accurate, has improved valve body machining efficiency, has improved sealing performance and production efficiency simultaneously.

2. The utility model discloses set up the parallel key, through the parallel key with the firm connection of base and lathe workstation, it is more stable to connect.

3. The utility model discloses set up the clamp plate, it is protruding that the butterfly valve both ends are pushed down to the clamp plate, and the round hole on the clamp plate passes the bolt, sets gradually gasket and nut on the bolt, and valve body, base and lathe workstation pass through bolt, nut, gasket, clamp plate fixed, make processing frock and butterfly valve add man-hour be the integral structure.

4. The utility model discloses still can set up a plurality of symmetric holes, at the downthehole locating pin of installing of a plurality of symmetric holes, make processing frock a plurality of specifications general, save the cost.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.

FIG. 1 is a front view of a butterfly valve body shaft hole processing tool of the present invention;

FIG. 2 is a left side view of the shaft hole processing tool of the butterfly valve body of the present invention;

FIG. 3 is a top view of the shaft hole processing tool of the butterfly valve body of the present invention;

in the figure: 1. a valve body; 2. a bolt; 3. a nut; 4. a gasket; 5. pressing a plate; 6. a first positioning pin; 7. a base; 8. a machine tool table; 9. a first flat key; 10. a second positioning pin; 11. a second flat bond.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

For convenience of description, the words "upper", "lower", "left" and "right" in the present application, if any, merely indicate correspondence with the upper, lower, left and right directions of the drawings themselves, and do not limit the structure, but merely facilitate the description of the present invention and simplify the description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Term interpretation section: the terms "mounted," "connected," "fixed," and the like in the present invention are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrated; the two components can be connected mechanically, directly or indirectly through an intermediate medium, or connected internally or in an interaction relationship, and specific meanings of the terms in the present invention can be understood by those skilled in the art according to specific situations.

The following description will be made in detail with reference to the accompanying drawings, and as shown in the drawings, the novel butterfly valve body shaft hole machining tool with the self-centering function disclosed by the embodiment comprises a base; a round hole is formed in the center of the base 7; two symmetrical holes are formed in the upper plane of the base 7 and symmetrically arranged on the transverse axis of the round hole of the base; and a first positioning pin 6 and a second positioning pin 10 are respectively arranged in the symmetrical holes. Two key grooves are formed in the lower plane of the base 7, and the key grooves are symmetrically formed in the longitudinal axis of the round hole of the base; the key grooves are internally provided with a first flat key 9 and a second flat key 11 respectively.

The base 7 is arranged on a machine tool workbench 8, and two grooves are formed in the upper surface of the machine tool workbench 8. The grooves are symmetrically arranged in the direction of the longitudinal axis of the round hole of the base; and the first flat key 9 and the second flat key 11 on the base 7 are matched with the grooves to fix the base 7 on the machine tool workbench 8. The base 7 is provided with the round hole, so that the weight of the processing tool can be reduced, and the production cost is reduced. The flat key is a round-head flat key, the shapes of the key groove and the groove are the same as the shapes of the round-head flat key, and the key groove and the groove are connected with a machine tool workbench 8 and a base 7 through the flat key.

The valve body 1 is arranged on the base 7; and the inner ring of the valve body 1 is attached to the positioning pin. Symmetrical hole and locating pin fixed connection, the locating pin will be installed accurately, makes the locating pin can hug closely with 1 inner circle of valve body to restriction 1 position of valve body avoids 1 removal of valve body, makes valve body 1 can the accurate positioning, and then has guaranteed the accuracy of processing valve body valve opening position.

Pressing plates 5 are arranged at the bulges at the left end and the right end of the valve body 1; the pressing plate 5 presses the upper surface of the projection. Two pressure plates 5 are arranged; and a circular hole is formed in the pressing plate 5. The round hole of the pressing plate 5 penetrates through the bolt 2, and the lower end of the bolt 2 props against the upper surface of a machine tool workbench 8. And the upper end of the bolt 2 is sequentially provided with a gasket 4 and a nut 3. The pressing plate 5 presses the bulges at the two ends of the butterfly valve, the bolt 2 penetrates through the round hole in the pressing plate 5, the diameter of the round hole is slightly larger than that of the bolt 2, the gasket 4 is sleeved at the upper end of the bolt 2, the nut 3 is screwed on, and the valve body 1, the base 7 and the machine tool workbench 8 are pressed through the cooperation of the pressing plate 5, the bolt 2, the gasket 4 and the nut 3.

The symmetry hole can be provided with a plurality of in the base 7 round hole horizontal axis direction symmetry, sets up the locating pin in the symmetry hole. But the locating pin symmetry sets up pair, makes the processing frock applicable in the butterfly valve of different specifications, and when the great butterfly valve processing valve opening of specification, the first locating pin 6 and the second locating pin 10 of available both sides are fixed a position, and when the less butterfly valve processing valve opening of specification, the locating pin that can be close base round hole position fixes a position. The processing tool has strong adaptability, saves the cost, and can accurately position the butterfly valves with different specifications by only one processing tool, thereby ensuring the precision of the position of the valve hole.

The working mode is as follows:

when the valve body 1 is used, one surface of the first flat key 9 and one surface of the second flat key 11 are arranged in a key groove of the lower plane of the base 7, the other surface of the first flat key is arranged in a groove of the upper surface of a machine tool workbench 8, the inner ring of the channel of the valve body 1 is matched with the first positioning pin 6 and the second positioning pin 10, the valve body 1 is pushed along the axial direction of the machine tool until the inner ring of the channel of the valve body 1 is contacted and leaned against the first positioning pin 6 and the second positioning pin 10, and the position of the valve body 1 is accurately positioned. The bulges on the two sides of the valve body 1 are pressed by a pressing plate 5, and the pressing plate 5 is matched with the bolt 2, the gasket 4 and the nut 3 to fix the valve body 1, the base 7 and the machine tool workbench 8.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Although the specific embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications or variations can be made by those skilled in the art without inventive efforts on the basis of the technical solutions of the present invention.

Claims

1. A novel butterfly valve body shaft hole machining tool with a self-centering function is characterized by comprising a base; a round hole is formed in the center of the base; the upper plane of the base is provided with two symmetrical holes which are symmetrically arranged on the transverse axis of the round hole of the base; and a first positioning pin and a second positioning pin are respectively arranged in the symmetrical holes.

2. The novel butterfly valve body shaft hole machining tool with the self-centering function according to claim 1, wherein two key grooves are formed in the lower plane of the base, and the key grooves are symmetrically formed in the longitudinal axis of the round hole of the base; and a first flat key and a second flat key are respectively arranged in the key grooves.

3. The novel butterfly valve body shaft hole machining tool with the self-centering function according to claim 1, wherein the base is arranged on a machine tool workbench, and two grooves are formed in the upper surface of the machine tool workbench.

4. The novel butterfly valve body shaft hole machining tool with the self-centering function according to claim 3, wherein the grooves are symmetrically arranged in the direction of the longitudinal axis of the base circular hole; and the first flat key and the second flat key on the base are matched with the groove to fix the base on the machine tool workbench.

5. The novel butterfly valve body shaft hole machining tool with the self-centering function according to claim 1, wherein a valve body is arranged on the base; and the inner ring of the valve body is attached to the positioning pin.

6. The novel butterfly valve body shaft hole machining tool with the self-centering function according to claim 1, wherein a pressing plate is arranged at the protruding part of the left end and the protruding part of the right end of the valve body; the pressing plate presses the upper surface of the protrusion.

7. The novel butterfly valve body shaft hole machining tool with the self-centering function according to claim 6, wherein two pressure plates are arranged; and the pressing plate is provided with a round hole.

8. The novel butterfly valve body shaft hole machining tool with the self-centering function according to claim 7, wherein bolts penetrate through the pressure plate circular holes, and the lower ends of the bolts abut against the upper surface of a machine tool workbench.

9. The novel butterfly valve body shaft hole machining tool with the self-centering function according to claim 8, wherein a gasket and a nut are sequentially arranged at the upper end of the bolt.

10. The novel butterfly valve body shaft hole machining tool with the self-centering function according to claim 1, wherein a plurality of symmetrical holes are symmetrically arranged in the transverse axis direction of the base circular hole; and positioning pins are arranged in the symmetrical holes.