CN111571140A - Ball valve core and machining method thereof - Google Patents
Ball valve core and machining method thereof Download PDFInfo
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- CN111571140A CN111571140A CN202010456056.3A CN202010456056A CN111571140A CN 111571140 A CN111571140 A CN 111571140A CN 202010456056 A CN202010456056 A CN 202010456056A CN 111571140 A CN111571140 A CN 111571140A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000003754 machining Methods 0.000 title claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 60
- 230000002093 peripheral effect Effects 0.000 claims abstract description 21
- 238000005520 cutting process Methods 0.000 claims description 7
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 15
- 210000003205 muscle Anatomy 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000005498 polishing Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000008602 contraction Effects 0.000 description 3
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- 238000011010 flushing procedure Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 235000012149 noodles Nutrition 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/001—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass valves or valve housings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0605—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in means
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Abstract
The invention provides a ball valve core and a machining method thereof, and belongs to the technical field of valves. It has solved the problem that current ball case manufacturing cost is high and production efficiency is low. This ball valve core has seted up the through-hole including the body that is spherical profile form on the body, still is equipped with the three plane that parallels with the central line of through-hole on the body outer peripheral face, is equipped with one or two bellied fins on the body outer peripheral face, and the top surface of fin is the spherical face unanimous with the sphere of body, lies in the fin both sides on the body and all is equipped with the tangent plane, all forms the notch between tangent plane and the fin side. The ball valve core has the advantages of reducing the production cost, improving the production efficiency and the like.
Description
Technical Field
The invention belongs to the technical field of valves, relates to a ball valve core, and particularly relates to a ball valve core and a machining method thereof.
Background
The ball valve contacts more frequently in our daily life, and its main effect is the opening and closing of control pipeline. The ball valve core is used as a main part of the ball valve, and the demand is very large. The production process of the common ball valve core is basically divided into the following steps: 1. the blanking machine is used for blanking the circular tube to cut the circular tube into a small section of blank; 2. clamping the outer diameter of the blank material, and boring an inner hole through a lathe; 3. replacing the machine tool to carry out internal bracing and clamping to carry out rounding on the outer surface of the blank; 4. changing the machine tool, and turning out a top groove matched with the valve rod by the inner support clamp; 5. changing a machine tool to clamp and turn the outer diameter of the blank material out of a bottom groove; 6. and (5) spherical surface polishing treatment. In the steps, the lathe needs to be replaced for machining in each step, the lathe needs to be clamped and positioned again in each replacement, the operation is troublesome, the lathe needs to be manually fed and discharged, and the production cost is too high. And the spherical surface of the ball valve core can be damaged by being clamped by the clamp after the outer diameter of the ball valve core is clamped every time, and the cost of polishing the spherical surface is higher.
The ball valve core that produces according to the aforesaid is in order to satisfy and its apical groove turning unavoidable of valve rod complex requirement, and the valve rod cooperates with the ball valve core in stretching into the apical groove, because the ball valve core outer peripheral face makes the better block of valve rod ability for the degree of depth that prevents the apical groove too big its effect of turning into the arc with the apical groove into usually for increasing the groove when processing, but what bring is production efficiency's reduction.
The bottom groove is mainly formed to reduce the mass of the ball valve core and recover partial materials, so that the production cost is reduced. Because the use amount of the ball valve core in the market is extremely huge, the effect of greatly reducing the production cost can be achieved by recycling part of materials under the condition of not influencing the use, but the turning of the bottom groove is accompanied by the increase of the use cost of manpower and a lathe, the actual reduction cost is not satisfactory, and the increase of the processing procedure can also prolong the production period. Therefore, the problem of solving the above existing problem is that the matters to be handled are not buffered at present.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a ball valve core and a machining method thereof. It solves the technical problems of high production cost and low production efficiency of the existing ball valve core.
The purpose of the invention can be realized by the following technical scheme:
a machining method of a ball valve core is characterized by comprising the following steps:
drawing wires in the first step: obtaining a special-shaped pipe by adopting a die for drawing, wherein the radial section of the special-shaped pipe is square and is provided with a central hole, and one or two convex ribs which are convex along the length direction of the special-shaped pipe are arranged on one outer side surface of the special-shaped pipe;
and a second step of positioning: clamping the special-shaped pipe on a lathe through a clamp, wherein one end part of the special-shaped pipe extends out of the clamp;
thirdly, turning the outer circle: turning the outer surface of the special-shaped pipe extending out of the clamp by a cutter on a lathe, wherein the turned special-shaped pipe at the station is in a spherical profile shape;
fourthly, boring an inner hole: boring a central hole of the special-shaped pipe at one end of the spherical profile shape through a cutter, wherein the cutter enters from an orifice of the central hole and the entering depth of the cutter is the same as the length of the spherical profile on the special-shaped pipe;
fifthly, cutting: and cutting the special-shaped pipe with the spherical contour shape by a cutter to form a finished ball valve core.
And (3) clamping the special-shaped pipe by a clamp on a lathe, and extending one end part of the special-shaped pipe out of the clamp. One end of the special pipe exposed outside is the position to be processed, and the position to be processed is processed, so that the whole process of ball valve core processing can be completed by one-time clamping and positioning, the labor cost and the use cost of a lathe are reduced, the production cost is greatly reduced, and the production efficiency is improved. In addition, the position to be processed is always connected to the special-shaped pipe from the beginning of processing to the end of processing before being cut, the clamp is not in direct contact with the position to be processed, the damage to the outer surface of the ball valve core caused by multiple clamping and positioning is avoided, polishing treatment is not needed after the production of the ball valve core is finished, the production cost is further reduced, and the production efficiency is improved. The machined special-shaped pipe is cut down to be a finished product ball valve core, then the clamp is loosened to push the rear special-shaped pipe out of the clamp to be positioned for machining, so that the steps of blanking and the process of repeatedly clamping blank materials are omitted, the special-shaped pipe clamp is suitable for flow line production, and the production efficiency is improved.
The radial section of the special pipe is square and is provided with a central hole, and a convex rib is arranged on one outer side surface of the special pipe and distributed along the length direction of the surface. The convex rib is in a long strip shape, the length of the convex rib is the same as that of the outer side surface of the special-shaped pipe, and when only one convex rib is arranged, the radial section of the special-shaped pipe is in a convex shape. When the rib has two, the two ribs are parallel to each other with a clearance groove therebetween. When the outer circle of the ball valve is turned out in the third step, the outer peripheral surface of the turned spherical contour is provided with four planes formed by the outer side surfaces of the special-shaped pipes, so that the materials of the processed ball valve core are greatly reduced, and the production cost is greatly reduced. And protruding muscle turning in-process has also kept a segment on spherical profile and has kept on the ball case along with cutting off afterwards its effect be used for with the valve rod cooperation, has processed out the plane of province material promptly when directly one step of turning excircle in place and has processed out again with valve rod complex protruding muscle, has optimized the processing step and has made manufacturing cost further reduce, production efficiency obtains promoting by a wide margin.
Because the center hole is the center hole of the special-shaped pipe, the roughness and the aperture size of the special-shaped pipe need to be processed through a cutter, the boring is large, partial materials are recycled while the boring is large, the special-shaped pipe at the station is cut off after the center hole is enlarged to form the finished ball valve core, and the production cost is reduced while the processing efficiency is ensured.
In the above method for processing a ball valve core, the drawing in the first step includes drawing for the first time to obtain a blank of the special-shaped pipe and drawing for the second time to obtain a finished special-shaped pipe.
The size of the rough material of the special pipe is slightly larger than that of the finished special pipe, and the sizes of the central holes of the rough material and the finished special pipe are the same. The outer surface of the special pipe obtained by twice wire drawing is smoother and smoother, polishing is not needed, and the production cost is reduced.
In the above method for processing a ball valve core, the clamp in the second step is a collet chuck, and the special-shaped pipe extends into the clamping groove of the collet chuck and contracts radially to clamp the special-shaped pipe.
The special-shaped pipe is held through radial contraction or expansion to the collet chuck holder, and the collet chuck centre gripping is convenient and stable high, does benefit to production and processing, and its holder medial surface supports with the lateral surface of special-shaped pipe and leans on the contact when its radial contraction, and area of contact is bigger, can not harm the lateral surface of special-shaped pipe, has reduced manufacturing cost to a certain extent.
The utility model provides a ball valve core, is including being the body of spherical profile form, the through-hole has been seted up on the body, still is equipped with three plane that parallels with the central line of through-hole on the body outer peripheral face, its characterized in that, be equipped with one or two bellied fins on the body outer peripheral face, the top surface of fin is the spherical face unanimous with the sphere of body, it all is equipped with the tangent plane to lie in the fin both sides on the body, all forms the notch between tangent plane and the fin side.
Three planes on the outer peripheral surface of the ball valve core are directly formed by turning the outer circle of three outer side surfaces of the special-shaped pipe, so that the production efficiency is greatly improved, and meanwhile, the quality of the ball valve core is small, the raw materials are used, and the production cost is greatly reduced. The convex rib of the ball valve core is obtained by the convex rib on the special pipe when the vehicle is out of round, so the top surface of the convex rib is in a spherical surface shape with the same radian as the outer peripheral surface of the spherical profile-shaped body. The convex rib can be directly used for being matched with the valve rod, and the production of the ball valve core is greatly facilitated on the premise of ensuring the use of the ball valve core. Two convex ribs are arranged on the ball valve core obtained by turning the excircle of the special pipe with the two convex ribs, and the concave openings between the convex ribs are used for matching and fixing the valve rod. The notch is formed when a clearance groove between two parallel convex ribs on the original special-shaped pipe directly passes through the outer circle of the vehicle, so that the efficiency of producing the ball valve core is greatly improved. The tangent plane on this ball valve core is the side at protruding muscle place on the special-shaped pipe in fact, also need not extra processing, can obtain this tangent plane in the lump when the car is outer circle, and the notch that forms between tangent plane and the fin side also is itself just having after processing, sets up like this and has improved production efficiency greatly. The combination of the convex ribs and the tangent planes is used for being matched with the valve rod, so that the production efficiency is greatly improved. The top surface of the convex rib is arc-shaped, so that the top surface of the convex rib is cut into the arc shape together by turning the outer surface of the special-shaped pipe into the spherical shape when the cutter is in excircle, and the arc-shaped top surface is better matched with the valve rod when the ball valve is assembled, so that the assembly is convenient. The through hole on the ball valve core is formed after the inner hole of the special-shaped pipe is bored, and the ball valve core also has the effects of improving the production efficiency and reducing the production cost.
In the above ball valve core, the length direction of the protruding rib is parallel to the central line of the through hole.
In the above ball valve core, the height of the convex rib is gradually reduced from the middle to two sides to be flush with the outer peripheral surface of the body.
Because the outer peripheral face of body is globular, the high both ends in the middle of the protruding muscle reduce gradually to flushing with the body outer peripheral face, set up like this and make this ball valve pack into the valve body better and more smooth and easy cooperate with the valve rod, the assembly of being convenient for.
In the ball valve core, two adjacent planes are perpendicular to each other.
In the above ball valve core, the tangent plane is parallel to the center line of the through hole, and the tangent plane is also perpendicular to the adjacent plane.
Compared with the prior art, the product has the advantages that:
1. the whole process of machining the ball valve element can be completed through one-time clamping and positioning, and the clamp is not in direct contact with the special-shaped pipe of the position to be machined, so that the damage to the outer surface of the ball valve element due to multiple times of clamping and positioning is avoided, the production cost is greatly reduced, and the production efficiency is improved.
2. Three planes on the outer peripheral surface of the ball valve core are directly formed by turning the outer circle of three outer side surfaces of the special-shaped pipe, so that the production efficiency is greatly improved, and meanwhile, the quality of the ball valve core is small, the raw materials are used, and the production cost is greatly reduced.
3. The convex rib, the tangent plane and the notch of the ball valve core are obtained by the side surface of the special-shaped pipe and the convex rib when the vehicle is out-rounded, and the combination of the convex rib and the notch can be directly used for being matched with the valve rod, thereby greatly facilitating the production of the ball valve core on the premise of ensuring the use of the ball valve core.
Drawings
FIG. 1 is a schematic structural diagram of a profiled tube portion according to a first embodiment of the present invention;
fig. 2 is a schematic view of a clamp for clamping a special pipe according to a first embodiment of the invention;
FIG. 3 is a schematic structural view of the special-shaped pipe of the present invention after the outer circle is turned;
FIG. 4 is a schematic structural diagram of a ball valve core according to a first embodiment of the present invention;
FIG. 5 is a front view of a ball valve core according to a first embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a profiled tube portion according to a second embodiment of the present invention;
fig. 7 is a schematic structural view of a clamp for clamping a special-shaped pipe according to a second embodiment of the invention;
FIG. 8 is a schematic structural view of a ball valve core according to a second embodiment of the present invention;
fig. 9 is a front view of a ball valve core according to a second embodiment of the present invention.
In the figure, 1, a special pipe; 11. a central bore; 12. a rib is protruded; 2. a collet chuck; 21. a clamping groove; 3. a body; 31. a plane; 32. cutting into noodles; 33. a recess; 34. a through hole; 35. and ribs.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Example one
A ball valve core as shown in fig. 4 and 5, including the body 3 that is the spherical profile form, a through-hole 34 that is circular is seted up on the position that the body 3 maximum diameter is located, and through-hole 34 has two orifices on corresponding body 3, and two orifices are import and export respectively, and the import and the export of through-hole 34 of this ball valve core are all on same central line. The outer peripheral surface of the body 3 is provided with three planes 31 parallel to the central line of the through hole 34, namely a first plane, a second plane and a third plane, wherein the first plane and the third plane are parallel and symmetrical with each other, and the second plane is perpendicular to the first plane and the third plane. The distance between the second plane and the first plane is the same as that between the third plane and the second plane. The setting of three plane 31 makes this ball valve use the material to obtain sparingly under the condition that does not influence structural strength and use, greatly reduced manufacturing cost.
Be equipped with bellied fin 35 on the body 3 just right with plane two, fin 35 distributes along the central line direction of through-hole 34, and fin 35 height reduces gradually to flushing with body 3 outer peripheral face by middle to both ends, and fin 35 top surface is the arc. The body 3 on both sides of the convex rib 35 is also provided with a tangent plane 32, the tangent plane 32 and the side surface of the convex rib 35 form a notch 33, namely, both side surfaces of the convex rib 35 are provided with the notches 33, and the convex rib 35 and the notches 33 are combined to be used for matching with the valve rod. The lower end surface of the valve rod is provided with a straight groove with a straight line-shaped opening. Because of the existence of the notch 33, when the convex rib 35 is directly exposed outside the ball valve core, the convex rib 35 in the valve body is only needed to be pushed into the valve body, so that the ball valve core can enter the straight groove on the valve rod to be clamped to form circumferential limit, the lower end surface of the valve rod is also abutted against the tangent plane 32, the assembly is completed in one step, and the assembly efficiency of the ball valve core is greatly improved. Because the fin 35 presents the middle height both ends low for in the fin 35 can follow its top surface radian enters into the groove position on the valve rod along with the propelling movement, do not have the separation and effectively prevent the good block of fin 35 off normal and valve rod, further improved ball valve core assembly efficiency.
As shown in fig. 1 to 5, the ball valve core is manufactured by the following method: drawing wires in the first step: and drawing twice to obtain a finished product special-shaped pipe 1, namely drawing by using a drawing die for the first time to obtain rough materials of the special-shaped pipe 1 with larger size, and further drawing the rough materials by using a drawing die with small inner diameter to obtain the special-shaped pipe 1. The surface of the special pipe 1 drawn twice is more uniform and smooth, so that the outer surface of the special pipe does not need to be polished, and the production cost is reduced. The radial section of the special pipe 1 drawn by the drawing is square, and a central hole 11 is arranged in the special pipe 1, namely the special pipe 1 is provided with four outer side faces. The upper side of the special pipe 1 is also provided with a convex rib 12, and the convex rib 12 is distributed at the center of the upper side of the special pipe 1 along the length direction of the surface and has the same length as the special pipe 1.
And a second step of positioning: the special pipe 1 is completely extended into the special pipe 1 with a length slightly larger than that of a finished ball valve core from the clamping groove 21 of the spring chuck 2, and then the spring chuck 2 contracts radially to clamp the special pipe 1. The conventional collet chuck 2 has four holding portions which can be moved away from or close to each other, and the four holding portions surround to form a square holding groove 21, and the size of the holding groove 21 is changed by moving the holding portions away from or close to each other to hold the special-shaped pipe 1. The clamping part on the spring chuck 2 is also provided with a slot position which can contain the convex rib 12, so that the shape of the convex rib 12 is prevented from being damaged by clamping. Protruding muscle 12 is located the trench during centre gripping, and 2 centre gripping of spring chuck are convenient and stable high, do benefit to production and processing, and 2 clamping ends of spring chuck radial contraction or expansion lean on the contact through its lateral surface that adds holding end medial surface and special pipe 1, and area of contact is bigger, can not harm the lateral surface of special pipe 1, has reduced manufacturing cost to a certain extent. The special-shaped pipe 1 is clamped integrally on the lathe through the clamp, the to-be-machined position is exposed outside the clamp and then is machined, the whole process of machining the ball valve core can be completed through one-time clamping and positioning, the labor cost and the use cost of the lathe are reduced, the production cost is greatly reduced, and meanwhile, the production efficiency is improved. The method adopts the whole pipe clamping, one end to be processed is exposed outside the clamp, the clamp is not in direct contact with the position to be processed, the damage to the outer surface of the ball valve core caused by multiple clamping and positioning is avoided, the polishing treatment is not needed after the production of the ball valve core, the production cost is further reduced, and the production efficiency is improved. The end of the special-shaped pipe 1 exposed outside the clamp is machined and then cut off to form a finished ball valve core, the rear spring chuck 2 expands to loosen the special-shaped pipe 1 and then pushes the rear special-shaped pipe 1 out of a station, namely the length of the rear special-shaped pipe 1 is slightly larger than that of the finished ball valve core, the finished ball valve core is machined outside the clamp, the step of repeated feeding and discharging is omitted, and the production line is suitable for production and production efficiency is improved.
Thirdly, turning the outer circle: the clamp is driven by the rotating shaft to rotate in the circumferential direction, a cutter on the lathe is gradually close to an orifice 11 of a center hole of the special-shaped pipe 1 exposed outside the collet chuck 2, the cutter starts to feed from the orifice 11 of the center hole of the special-shaped pipe 1 to turn the outer surface of the special-shaped pipe 1 extending out of the clamp head, the turned end of the special-shaped pipe 1 to be machined is in a spherical profile shape, namely a blank, and the blank and the special-shaped pipe 1 are not turned off by the cutter, so that the blank is further connected with the special-shaped pipe 1 into a whole. As the radial section of the special pipe 1 is square and is provided with a central hole 11, a convex rib 12 is arranged on one outer side surface of the special pipe 1, and the convex rib 12 is distributed along the length direction of the surface. Therefore, the three planes 31 formed by the outer side surface of the special pipe 1 are the planes 31 of the ball valve core on the outer peripheral surface of the turned blank, so that the materials of the processed ball valve core are greatly reduced, the processing steps are reduced, and the production cost is greatly reduced. Wherein the convex rib 12 on the special pipe 1 turns the whole convex rib 12 into the convex rib 35 with the arc-shaped top surface matched with the valve core and the valve rod when the vehicle is out-round, the processing steps are less, and the production cost is low. The convex ribs 12 can be directly used for being matched with the valve rod, so that the ball valve core is greatly convenient to produce on the premise of ensuring the use of the ball valve core, and the efficiency is improved. The tangent plane 32 on this ball valve core is the one side of the special pipe 1 that the protruding muscle 12 on the special pipe 1 was located in fact, also need not extra processing, can obtain this tangent plane 32 in the lump when the car excircle, and the notch 33 that forms between tangent plane 32 and the protruding muscle 12 side also has just after the car excircle processing of itself, sets up like this and has improved production efficiency greatly. The reason why the top surface of the rib 12 is a spherical surface having the same radian as the outer peripheral surface of the body 3 is that the rib 12 is also cut together to form a top surface having the same radian as the outer peripheral surface of the body 3 having a spherical contour when the cutter is fed to turn the outer surface of the special-shaped pipe 1 into the spherical contour, and the arc-shaped top surface is better matched with the valve rod when the ball valve is assembled. The convex rib 35 and the concave opening 33 are directly obtained by turning the outer circle and can be directly matched with the valve rod, the processing efficiency is greatly improved in one step, and the valve rod is suitable for flow line production.
Fourthly, boring an inner hole: the fixture rotates circumferentially to drive one end of the spherical contour to rotate circumferentially, a cutter on a lathe starts to turn into the central hole 11 from an orifice of the central hole 11, a cutter feed path is parallel to the central line of the central hole 11 and extends into a position to be processed in the central hole 11, namely the depth of the central hole 11 in a blank, the central hole 11 processed in the way is uniform in aperture and more beneficial to water passing, partial materials are recycled while the inner peripheral surface of the central hole 11 meets the roughness requirement, and the production cost is further reduced.
Step five, cutting off and collecting the ball valve core: after the center hole 11 is machined and the tool is withdrawn, the tool is close to the position where the blank is connected with the special-shaped pipe 1, the tool cuts off along the end face of the special-shaped pipe 1 to separate the blank from the special-shaped pipe 1, and then the fallen finished ball valve core is received. The convex rib 12 on the special pipe 1 forms a convex rib 35 on the ball valve core; boring the enlarged central hole 11 to form a through hole 34; the four outer sides of the shaped tube 11 form a plane 31 and a tangent 32 on the ball valve core respectively. The ball valve machining method has the advantages that the steps are simplified, the production efficiency is improved conveniently, and meanwhile, the production cost is reduced.
For some customers with high requirements on the precision or quality of the finished ball valve core, burrs can be removed from the outer surface of the finished ball valve core, and the burrs are generated in the third step and the fifth step, so that the finished ball valve core can be clamped and positioned through internal support and then the outer surface of the finished ball valve core can be removed through finish turning by a cutter. Finished ball valve elements that do not require deburring for most customers can be installed directly. The surface of the finished product ball valve core with the burrs removed is smoother, and the appearance is more delicate.
Example two
The structure and principle of this embodiment are basically the same as those of the first embodiment, except that: in the embodiment shown in fig. 6 to 9, two ribs 12 are provided on one side of the drawn pipe profile 1 along the length of the pipe profile 1. So the ball valve core turned out after turning the outer circle has two convex ribs 35. The two convex ribs 35 are parallel to each other and have intervals between the two convex ribs, so that the body 3 is provided with three tangent planes 32, three notches 33 are formed between the tangent planes 32 and the side surfaces of the convex ribs 35, wherein the notches 33 between the two convex ribs 12 are used for installing a valve rod, namely, the ball valve core is pushed into the valve body, and the lower end of the valve rod is clamped into the notches 33 between the two convex ribs 35 to form circumferential limit. The convex ribs 35, the tangent planes 32 and the notches 33 are also directly formed when the vehicle is out of round, so that the production cost is reduced while the production efficiency is improved.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (8)
1. A machining method of a ball valve core is characterized by comprising the following steps:
drawing wires in the first step: obtaining a special-shaped pipe (1) by adopting a die for drawing, wherein the radial section of the special-shaped pipe (1) is square and is provided with a central hole (11), and one or two convex ribs (12) protruding along the length direction of the special-shaped pipe (1) are arranged on one outer side surface of the special-shaped pipe (1);
and a second step of positioning: clamping the special-shaped pipe (1) on a lathe through a clamp, wherein one end part of the special-shaped pipe (1) extends out of the clamp;
thirdly, turning the outer circle: turning the outer surface of the special-shaped pipe (1) extending out of the clamp by using a cutter on a lathe, wherein the turned special-shaped pipe (1) is in a spherical profile shape;
fourthly, boring an inner hole: boring a central hole (11) of the special-shaped pipe (1) with the spherical profile through a cutter, wherein the cutter enters from the orifice of the central hole (11) and the entering depth of the cutter is the same as the length of the spherical profile on the special-shaped pipe (1);
fifthly, cutting: and cutting off the special pipe (1) with the spherical contour shape by a cutter to form the finished ball valve core.
2. The method for processing the ball valve core according to claim 1, wherein the drawing in the first step comprises a first drawing to obtain a rough shaped pipe and a second drawing to obtain a finished shaped pipe (1).
3. A method for manufacturing a ball valve core according to claim 1 or 2, wherein the clamping device in the second step is a collet chuck (2), the special pipe (1) extends from a clamping groove (21) of the collet chuck (2) and the collet chuck (2) contracts radially to clamp the special pipe (1).
4. The utility model provides a ball valve core, is including body (3) that are spherical profile form, through-hole (34) have been seted up on body (3), still be equipped with three plane (31) that parallel with the central line of through-hole (34) on body (3) outer peripheral face, its characterized in that, be equipped with one or two bellied fin (35) on body (3) outer peripheral face, the top surface of fin (35) is the spherical surface unanimous with the sphere of body (3), it all is equipped with tangent plane (32) to lie in fin (35) both sides on body (3), all forms notch (33) between tangent plane (32) and fin (35) side.
5. A ball valve cartridge according to claim 4, wherein the length direction of the rib (35) is parallel to the center line of the through hole (34).
6. A ball valve cartridge according to claim 4 or 5, wherein the height of the rib (35) is gradually reduced from the middle to both sides to be flush with the outer peripheral surface of the body (3).
7. A ball valve cartridge according to claim 6, wherein adjacent planes (31) are perpendicular to each other.
8. A ball valve cartridge according to claim 7, wherein the cut surface (32) is parallel to the centre line of the through hole (34), and the cut surface (32) is also perpendicular to the adjacent plane (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010456056.3A CN111571140B (en) | 2020-05-26 | 2020-05-26 | Ball valve core and processing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113352121A (en) * | 2021-06-29 | 2021-09-07 | 苏州工业园区博斯塔机械有限公司 | Use method of floating ball drilling tool for vertical machining |
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| CN113352121A (en) * | 2021-06-29 | 2021-09-07 | 苏州工业园区博斯塔机械有限公司 | Use method of floating ball drilling tool for vertical machining |
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| CN111571140B (en) | 2024-09-03 |
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