CN218746404U - Gate valve body guide rib machining tool - Google Patents

Abstract

The utility model provides a gate valve body direction muscle processing frock, including the drum, offer a plurality of recesses that are used for installing the direction muscle on the drum outer wall, the recess is arranged along the drum axial, the degree of depth of recess is less than the thickness of direction muscle, set up the fixed orifices that is used for fixed direction muscle in the recess. The machining tool can be used for directly machining the arc surface of the guide rib on a common lathe, the size accuracy of the arc surface is guaranteed, and the machining efficiency is high.

Description

Gate valve body guide rib machining tool

Technical Field

The utility model relates to a machine part processing technology field, concretely relates to gate valve body direction muscle processing frock.

Background

The guide rib of the wedge gate valve body is very important for the whole valve assembly, the symmetry of the guide rib directly concerns the quality of the assembly quality and the sealing performance of the sealing surface, and the guide rib is the assembly reference of the whole valve sealing surface. In the gate valve design, often for practicing thrift valve body usage space and with the design of direction muscle for independent direction muscle, connect on the valve body through modes such as welding, the structure of this kind of independent direction muscle is simple relatively, nevertheless plays the effect of direction to the flashboard because of the direction muscle during the assembly, and the laminating degree of direction muscle and valve body and the symmetry of direction muscle are the key of deciding assembly quality.

In order to make the outer part of the guide rib completely attached to the inner wall of the valve body, the outer part of the guide rib is generally designed into a circular arc; in order to better guide the valve clack of the gate valve in the whole opening and closing stroke, the guide rib needs to be designed into a long strip shape, and a groove is formed in the guide rib. In order to meet the design characteristics of the guide rib, the processing mode of the guide rib needs to mill the guide rib into a long strip shape, then process an arc surface on the processing center, and mill the middle groove on the opposite side of the arc surface, as shown in fig. 5 to 7. Because the machining precision requirement of the arc surface is high, the arc surface can only depend on a numerical control milling or machining center at present, but the machining efficiency is too low, the cost is high, and the guide rib is long in length and thin in thickness, is easy to deform during machining, and is difficult to ensure the coaxiality of the arc.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a gate valve body direction muscle processing frock to prior art's defect, use this processing frock direct just can realize the processing of the arc surface of direction muscle on ordinary lathe, guarantee the size accuracy of arc surface, machining efficiency is higher moreover.

The utility model provides a gate valve body direction muscle processing frock, including the drum, offer a plurality of recesses that are used for installing the direction muscle on the drum outer wall, the recess is arranged along the drum axial, the degree of depth of recess is less than the thickness of direction muscle, set up the fixed orifices that is used for fixed direction muscle in the recess.

Further, the length direction of the groove is along the axial direction of the cylinder, and the width of the groove is equal to that of the guide rib.

Furthermore, the diameter of the cylinder is 2-5 mm smaller than that of the arc surface of the guide rib.

Further, a plurality of the grooves are circumferentially and uniformly arranged.

Furthermore, a top plate is arranged at one end of the cylinder, and a thimble hole matched with a thimble on the lathe tailstock is formed in the top plate.

Furthermore, one side of the top plate, which is close to the cylinder, is provided with an annular step, and the step is matched with the inner wall of the cylinder.

The utility model has the advantages that:

1. the utility model discloses a fix the direction muscle on the processing frock, directly on the ordinary lathe processing the arc surface of direction muscle can, need not to mill or the processing center goes up at the numerical control and processes, machining efficiency is higher, the cost is lower.

2. The utility model discloses an evenly set up the recess at the drum outer wall to fix the direction muscle in the recess through the bolt, fix the direction muscle through recess and bolt, make the direction muscle in the course of working stability, improve the machining precision.

3. The utility model discloses a set up the roof in the one end of drum, set up thimble complex thimble hole on the lathe on the roof for when the drum is held to chuck three-jaw card, the thimble hole is withstood to the thimble of lathe, can prevent that the drum from taking place to warp, has further improved the machining precision of arc surface.

Drawings

Fig. 1 is a schematic view of the structure of the utility model in use;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic structural view of the cylinder of the present invention before processing;

fig. 4 is a schematic structural view of the top plate of the present invention;

FIG. 5 is a front view of the guide rib of the present invention;

fig. 6 is a left side view of the guide rib of the present invention;

fig. 7 is a cross-sectional view of the guiding rib of the present invention.

Reference numerals: 1-cylinder; 2-a groove; 3-fixing holes; 4-a top plate; 5-step; 6-a guide rib; 7-circular arc surface.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

As shown in fig. 1, a gate valve body direction muscle processing frock, includes drum 1, offer a plurality of recesses 2 that are used for installing direction muscle 6 on the 1 outer wall of drum, recess 2 is arranged along 1 axial of drum, the degree of depth of recess 2 is less than the thickness of direction muscle 6, set up the fixed orifices 3 that are used for fixed direction muscle 6 in the recess 2.

It can be understood that, as shown in fig. 2, fix a plurality of direction muscle 6 respectively in a plurality of recesses 2 through fixed orifices 3, be provided with eight recesses 2, all install direction muscle 6 in eight recesses 2, utilize the chuck three-jaw to press from both sides the one end of drum 1 tightly, then process the arc surface 7 of direction muscle 6 at the lathe, because arranging of a plurality of direction muscle 6 on same drum 1, consequently the direction muscle 6 that processes out through this processing frock can guarantee the symmetry and the axiality of arc surface 7.

It should be noted that the depth of the groove 2 must be smaller than the thickness of the guide rib 6, where the thickness of the guide rib 6 refers to the thickness of the edge along the length direction of the guide rib 6, after the guide rib 6 is installed in the cylinder 1, the guide rib 6 can be higher than the outer wall of the cylinder 1, and the plane of the guide rib 6 can be processed into the arc surface 7 by a lathe tool during machining; in addition, the machining precision of the cylinder 1 and the groove 2 thereof is high, otherwise the machining precision of the arc surface 7 of the guide rib 6 is affected.

Further, the length direction of the groove 2 is along the axial direction of the cylinder 1, and the width of the groove 2 is equal to that of the guide rib 6.

The width of recess 2 equals with direction muscle 6 for recess 2 is spacing to the both sides of direction muscle 6 in 7 course of working of arc surface of direction muscle 6, prevents the shake of direction muscle 6, improves the machining precision.

In some embodiments, the diameter of the cylinder 1 is 2 to 5mm smaller than the diameter of the arc surface 7 of the guide rib 6.

It can be understood that, both to ensure that the lathe can process the guide rib 6 and to ensure that the groove 2 has a limiting effect on the guide rib 6, when the diameter of the cylinder 1 is too small compared with the diameter of the arc surface 7 of the guide rib 6, that is, the diameter of the cylinder 1 is greatly different from the diameter of the arc surface 7 of the guide rib 6, the limiting effect of the groove 2 on the guide rib 6 will be poor, and when the diameter of the cylinder 1 is too small compared with the diameter of the arc surface 7 of the guide rib 6, that is, the diameter of the cylinder 1 is slightly different from the diameter of the arc surface 7 of the guide rib 6, during the processing of the arc surface 7, the outer wall of the cylinder 1 may affect the processing of the arc surface 7, so that according to practice, when the diameter of the cylinder 1 is 2 to 5mm smaller than the diameter of the arc surface 7 of the guide rib 6, the quality of the processed arc surface 7 of the guide rib 6 is the best.

Further, a plurality of the grooves 2 are circumferentially and uniformly arranged.

It should be noted that what the processing of 6 arc surfaces 7 of direction muscle was adopted is the processing of sleeping carriage, rotary motion is done to the one end that the lathe presss from both sides tight drum 1, because whole processing frock is longer along the axial, if recess 2 arranges inhomogeneously, can make the focus of overall structure not on 1 axis of drum, in the course of working, along with drum 1's rotation, drum 1 can take place to warp, influence the 7 machining precision of arc surfaces 7 of direction muscle 6, consequently, recess 2 should hoop evenly arrange, add man-hour, 6 symmetric installations of direction muscle are on drum 1.

In some embodiments, a top plate 4 is disposed at one end of the cylinder 1, and a thimble hole for matching with a thimble on a lathe tailstock is formed in the top plate 4. The top plate 4 is made of a carbon steel plate, and the cylinder 1 is made of a thick-wall carbon steel pipe.

As shown in fig. 3, in order to further reduce the deformation of the cylinder 1 during the machining process, one end of the cylinder 1 is clamped by the chuck three-jaw during the machining process, the other end of the cylinder 1 is provided with a top plate 4, the top plate 4 is provided with a thimble hole, and when the machining process is performed, a thimble on the lathe tailstock props against the thimble hole and props against the top plate 4, so that the position where the cylinder 1 is suspended is prevented from falling, and the machining precision of the arc surface 7 of the guide rib 6 is improved.

Further, one side of the top plate 4 close to the cylinder 1 is provided with an annular step 5, and the step 5 is matched with the inner wall of the cylinder 1.

The processing method of the processing tool comprises the following steps: weld drum 1 and roof 4 together, then press from both sides tight roof 4 and rectify the excircle of drum 1 and the excircle of roof 4, then set up the thimble hole on roof 4, press from both sides tight drum 1 and do not set up 4 one ends of roof after that, the thimble hole is withstood to the lathe thimble, mill the recess 2 that equals with 6 width of direction muscle to make the degree of depth of recess 2 be less than the thickness of direction muscle 6, at last the fixed orifices 3 is attacked to the brill in recess 2.

The use method of the processing tool comprises the following steps: a plurality of unprocessed guide ribs 6 are symmetrically fixed in grooves 2 of a cylinder 1 through bolts, then the cylinder 1 is clamped by a chuck three-jaw, a lathe thimble abuts against a thimble hole in a bottom plate, the chuck three-jaw controls the rotation of the cylinder 1, and an arc surface 7 on the guide ribs 6 starts to be processed.

The above-mentioned embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims (6)

1. The utility model provides a gate valve body direction muscle processing frock which characterized in that: the guide bar fixing device is characterized by comprising a cylinder (1), wherein a plurality of grooves (2) used for installing guide bars (6) are formed in the outer wall of the cylinder (1), the grooves (2) are axially arranged along the cylinder (1), the depth of each groove (2) is smaller than the thickness of each guide bar (6), and fixing holes (3) used for fixing the guide bars (6) are formed in the grooves (2).

2. The gate valve body guide rib machining tool of claim 1, characterized in that: the length direction of the groove (2) is along the axial direction of the cylinder (1), and the width of the groove (2) is equal to that of the guide rib (6).

3. The gate valve body guiding rib machining tool according to claim 1, characterized in that: the diameter of the cylinder (1) is 2-5 mm smaller than that of the arc surface (7) of the guide rib (6).

4. The gate valve body guide rib machining tool of claim 1, characterized in that: the grooves (2) are annularly and uniformly arranged.

5. The gate valve body guide rib machining tool according to any one of claims 1 to 4, characterized in that: and a top plate (4) is arranged at one end of the cylinder (1), and a thimble hole matched with a thimble on a lathe tailstock is formed in the top plate (4).

6. The gate valve body guide rib machining tool according to claim 5, characterized in that: and one side of the top plate (4) close to the cylinder (1) is provided with an annular step (5), and the step (5) is matched with the inner wall of the cylinder (1).

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