CN114434112A - Method for processing special-shaped hole ball - Google Patents
Method for processing special-shaped hole ball Download PDFInfo
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- CN114434112A CN114434112A CN202210231458.2A CN202210231458A CN114434112A CN 114434112 A CN114434112 A CN 114434112A CN 202210231458 A CN202210231458 A CN 202210231458A CN 114434112 A CN114434112 A CN 114434112A
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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
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Abstract
The invention provides a method for processing a special-shaped hole sphere, aiming at a sphere with a non-through hole inner hole, the method comprises the steps of semi-finish turning of a spherical surface, end face milling, stepped hole milling, crescent groove milling, vent hole milling, line cutting of the special-shaped hole, spherical surface polishing and the like, and can be used for accurately processing the sphere on a common machine tool and an existing processing center by means of various tools.
Description
Technical Field
The invention relates to the field of ball valve ball body processing, in particular to a method for processing a special-shaped hole ball body.
Background
In the production process of a ball valve ball body, the ball valve is divided into a floating ball, a fixed ball and the like, the inner holes of the ball valve ball body are all through holes generally, namely all longitudinal sections are the same, and the conventional method for processing the ball body is as follows: the through hole is machined firstly, so that the inner hole can be supported by the expansion sleeve to finish the spherical surface, but for some spheres of which the inner holes are not through holes, the existing machining method is not suitable any more. As shown in fig. 1, the inner hole of the sphere to be processed in the present application includes a section of circular through hole and also includes a section of through hole similar to a triangle, and the length of the triangular through hole is smaller than that of the circular through hole.
Disclosure of Invention
In order to solve the problems, the invention provides a method for processing a special-shaped hole ball.
The main content of the invention comprises:
a processing method of a special-shaped hole ball body comprises a special-shaped through hole, a crescent groove and an air vent, wherein the special-shaped through hole comprises a first through hole and a second special-shaped hole which are communicated, the longitudinal section of the first through hole is circular, and the longitudinal section of the second special-shaped hole is triangular, at least one side of which is an arc line segment; the maximum distance between the center of the longitudinal section of the second special-shaped hole and each vertex is smaller than the radius of the first through hole; the processing method of the irregular hole sphere comprises the following steps:
s1, carrying out heat treatment on a blank: the blank is a bar stock;
s2, semi-finish turning a spherical surface to obtain a coarse material piece: the rough material part comprises a ball body part and a ball handle, the ball body part is provided with a ball handle plane, the ball handle extends outwards from the ball handle plane, and a handle blind hole with internal threads is formed in the end face, far away from the ball body part, of one end of the ball handle;
s3, finely turning a spherical surface: installing the coarse material on a common ball lathe through a finish turning positioning tool, and finish turning the spherical surface to ensure that the radius of the sphere meets the requirement of a drawing, and ensure that the roughness of the spherical surface is 1.6 and the sphericity is 0.02;
s4, end face milling: fixing the spherical surface on a vertical machining center by using a spherical surface positioning tool, and after correcting the plane of the ball handle and the excircle of the spherical part, milling the distance from the plane of the ball handle to the center of the ball inner hole to reach a set distance to obtain an end surface;
s5, drilling and milling a stepped hole: continuously drilling and milling the first through hole from the center of the end face to the center of the sphere on the vertical machining center, and milling an orifice by using an R-shaped cutter to obtain a chamfered end face at one side; then, drilling and milling a second through hole at a set radius from the bottom of the first through hole to a direction far away from the center of a sphere, and milling a bottom chamfer of the first through hole and an orifice chamfer of the second through hole by using an R-angle cutter;
s6, milling a crescent groove: positioning the ball body by using an inner hole positioning tool, and milling the crescent groove by using a milling cutter;
s7, drilling a through air hole: positioning by using a vent hole drilling tool, and drilling and milling the vent hole;
s8, wire-electrode cutting of special-shaped holes: cutting the second through hole line to obtain a second special-shaped hole according to the drawing requirement;
s9, polishing a spherical surface: fixing a sphere on a lathe by using a polishing positioning tool, polishing the spherical surface according to the drawing requirement, and ensuring that the roughness of the outer circle of the sphere is lower than 0.2;
s10, post-processing: and (5) cleaning, inspecting and warehousing.
Preferably, the finish turning positioning tool comprises a tool main body which is detachably arranged at one end of the main shaft of the common ball car and is provided with an installation through hole, and a pull rod which is used for connecting the ball handle; the tool main body comprises a tool rod part and a tool head part, and one end of the tool rod part, which is far away from the tool head part, is in taper fit with an inner hole of a main shaft of the common ball car; the tool head is provided with an avoiding structure, a connecting through hole is formed in the end face of the tool head, the ball handle is inserted into one end of the connecting through hole, and the pull rod penetrates through an inner hole of a main shaft of the common ball car and the mounting through hole and is in threaded connection with the handle blind hole.
Preferably, pass through finish turning location frock with coarse material spare and install on ordinary ball car, the step of finish turning sphere includes:
firstly, the tool rod part is in taper fit in an inner hole of a machine tool spindle; then, the pull rod sequentially penetrates through an inner hole of a main shaft of the machine tool and the mounting through hole from the outer side of the machine tool, and then the ball shank is inserted into the connecting through hole, so that the pull rod is in threaded connection with the shank blind hole; one end of the pull rod, which is far away from the tool rod part, is locked by a nut and a gasket, so that the plane of the ball handle is abutted against the end surface of the tool head.
Preferably, the spherical positioning tool comprises two spherical tool bodies, and one side of each spherical tool body is provided with a spherical positioning groove matched with a spherical surface; the spherical tool body is made of pig iron, and a rubber buffer layer is laid in the spherical positioning groove.
Preferably, the inner hole positioning tool comprises an inner hole tool body and an inner hole positioning column body, an inner hole placing groove matched with the excircle of the spherical part is formed in the upper surface of the inner hole tool body, a column body mounting hole is formed in the center of the bottom of the inner hole placing groove, and the inner hole positioning column body is detachably mounted in the column body mounting hole and extends downwards; the bore positioning cylinder including a first cylinder section disposed within the first through bore and a second cylinder section disposed within the second through bore; when a crescent groove is milled, the first cylinder section extends out of the ball part, and a clamping jaw of the vertical machining center clamps one end of the first cylinder.
Preferably, the vent hole drilling tool at least comprises a positioning surface and a processing surface opposite to the positioning surface; the positioning surface comprises a positioning structure, and the positioning structure comprises a first arc section, a second arc section and a third arc section; the two ends of the second arc section are connected with the first arc section and the third arc section, and the second arc surface arc section is a convex arc surface corresponding to a crescent groove of the floating ball body to be processed; the first arc section and the third arc section are concave arc surfaces corresponding to the spherical surface of the floating ball body to be processed; the processing surface is provided with a processing hole, when the second arc section is attached to a crescent groove of a floating ball of a ball body to be processed, the central axis of the processing hole is axially vertical to the central axis of a central through hole of the floating ball body, and the central axis of the processing hole is vertical to a tangent line passing through the central point of the second arc section; the diameter of the processing hole is equal to that of the vent hole of the floating ball body to be processed.
Preferably, a first positioning groove is formed at the intersection of the first arc section and the second arc section, and the central axis of the first positioning groove is parallel to the central axis of the central through hole of the spherical floating ball to be processed; and a second positioning groove is formed at the intersection of the third arc section and the second arc section, and the central axis of the second positioning groove is parallel to the central axis of the central through hole of the spherical floating ball to be processed.
Preferably, the polishing positioning tool comprises a polishing mandrel, an anti-slip bushing coated outside the polishing mandrel and a locking assembly; the center of the end surfaces of the two ends of the polishing mandrel is provided with a center hole matched with the center of a machine tool; the locking assembly comprises a locking nut, a locking gasket and two locking sleeves in a circular truncated cone shape; when a spherical surface is polished, one end of the polishing mandrel is limited in the first through hole by the two locking sleeves, and the anti-skid bush is sleeved outside the polishing mandrel between the two locking sleeves; the lock nut and the gasket are arranged at the other end of the polishing mandrel.
The invention has the beneficial effects that: the invention provides a method for processing a special-shaped hole ball, aiming at a ball with a non-through hole inner hole, the ball can be accurately processed on a common machine tool and the existing processing center by means of various tools, the process arrangement is reasonable, the machining can be completed without frequently replacing the machine tool and the tools, the processing efficiency is improved, and the production cost is reduced on the premise of ensuring the processing precision.
Drawings
FIG. 1(a) is a detailed structure diagram of an angle of a shaped hole sphere according to the present invention;
FIG. 1(b) is a detailed structural diagram of another angle of the irregularly-shaped hole sphere of the invention;
FIG. 2 is a schematic structural view of a coarse material piece obtained by semi-finish turning a spherical surface;
FIG. 3 is a schematic view of spherical surface finish turning;
FIG. 4 is a schematic view of a step hole drilling and milling process;
FIG. 5 is a schematic view of a crescent groove milling process;
FIG. 6 is a schematic view of the process of drilling through holes;
fig. 7 is a schematic view of the processing of the polished spherical surface.
Detailed Description
The technical scheme protected by the invention is specifically explained in the following by combining the attached drawings.
The invention provides a method for processing a special-shaped hole sphere, which can be suitable for processing the special-shaped hole sphere shown as 1, and as shown in fig. 1(a) and 1(b), the special-shaped hole sphere comprises a sphere 1, wherein an inner hole of the sphere 1 comprises a first through hole 1-1 with a circular longitudinal section, a second special-shaped hole 1-2 communicated with the first through hole 1-1, a crescent groove 1-3 and a vent hole 1-4, wherein the crescent groove 1-3 is arranged above the inner hole; wherein the diameter R1 of the sphere 1 is 41 mm; the length L1 of the first through hole 1-1 is 23.5mm, the diameter D1 is 25mm, the orifice of the first through hole 1-1 is provided with a chamfer structure, the radius of the chamfer is 0.5mm, the length L2 of the second special-shaped hole 1-2 is 12.5mm, the longitudinal section of the second special-shaped hole is approximately triangular, the three corners of the second special-shaped hole are rounded corners, one side is an arc section, the radian of the side is the same as that of the outer circumference, the radius R2 is 12mm, the included angle alpha of the apex angle opposite to the arc section is 60 degrees, and the maximum distance between the apex angle and the arc section is 24 mm; as can be seen from fig. 1(b), the maximum distance between the center of the longitudinal section of the second profile hole 1-2 and each vertex is smaller than the radius of the first through hole 1-1; the width W of the crescent grooves 1-3 is 9mm, the radius of the cambered surface is 22mm, and the distance L3 from the groove bottoms of the crescent grooves 1-3 to the sphere center is 14.5 mm; the diameter D3 of the vent holes 1-4 is 2 mm.
Please refer to fig. 1 to 7. The technical scheme of the invention will be explained in detail by taking the irregularly-shaped hole ball disclosed in fig. 1(a) and (b) as an example;
specifically, the processing method comprises the following steps:
s1: carrying out heat treatment on the blank: the blank is a bar stock, wherein the diameter of the bar stock is 45 mm; (ii) a
S2, semi-finish turning a spherical surface to obtain a coarse material piece: as shown in fig. 2, the rough material piece includes a ball portion 10 and a ball handle 11, the ball portion 10 has a ball handle plane 100, the ball handle 11 extends outwards from the ball handle plane 100, meanwhile, a handle blind hole 110 with an internal thread is opened at one end of the ball handle 11, and the step of obtaining the rough material piece by clamping the bar material is as follows:
after clamping the bar stock on a numerical control machine tool, firstly turning out the ball handle 11 to enable the diameter of the ball handle to be 16mm at D11; length L11 is 18 mm; the distance D10 between the plane of the ball shank and the center of the ball is 16.5mm, and then the blind hole 110 of the drilling shank in the center of the ball shank 11 is aligned to lead the tapping depth to be 15mm and the drilling depth to be 20 mm; then the ball body part 10 is turned after the ball handle 11 is clamped, so that the diameter R10 reaches 42mm, namely 1mm of allowance is reserved relative to the finished product for subsequent finish turning of the spherical surface.
S3, finely turning a spherical surface: installing the coarse material on a common ball lathe through a finish turning positioning tool, and finish turning the spherical surface to ensure that the radius of the sphere meets the requirements of a drawing, namely 41mm, and ensuring that the roughness of the spherical surface is 1.6 and the sphericity is 0.02; specifically, referring to fig. 3, the finish turning positioning tool includes a tool main body 31 detachably mounted at one end of the main shaft 6 of the common ball cart and having a mounting through hole 30, and a pull rod 32 for connecting the ball handle 11; the tool main body 31 comprises a tool rod part 310 and a tool head part 311, and one end of the tool rod part 310, which is far away from the tool head part 311, is in taper fit with the inner hole 60 of the common sphere lathe spindle 6; frock head 311 has dodges structure to dodge the cutter of lathe, just connect the through hole 300 has been seted up to the terminal surface of frock head 311, the ball shank 11 inserts connect the one end of through hole 300, pull rod 32 passes the hole 60 of the main shaft 6 of ordinary cart and installation through-hole 30 with handle blind hole 110 threaded connection.
Specifically, pass through finish turning location frock with coarse material spare and install on ordinary ball car, the step of finish turning sphere includes:
firstly, the tool rod part 310 is in taper fit in an inner hole of a machine tool spindle 6; then, the pull rod 32 sequentially passes through the machine tool spindle inner hole 60 and the mounting through hole 30 from the outer side of the machine tool, and then the ball shank 11 is inserted into the connecting through hole 300, so that the pull rod 32 is in threaded connection with the shank blind hole 110, in this embodiment, only one circle of external threads may be formed at the head of the pull rod 32, or a screw may be used as the pull rod; and locking the pull rod 32 at one end of the pull rod 32 far away from the tool rod part 310 through a nut 33 and a gasket 34, so that the ball shank plane 100 abuts against the end surface of the tool head part 311.
Because the handle blind hole of internal screw thread is seted up to ball handle department, only need set up corresponding external screw thread at the head of pull rod can, the processing cost and the degree of difficulty of pull rod are low, and the ball handle need not very long, only need can satisfy the requirement of stable connection can.
S4, end face milling: and (3) fixing the spherical surface on the vertical machining center by using a spherical surface positioning tool, and after correcting the plane of the ball handle and the excircle of the spherical part, milling the distance from the plane of the ball handle to the center of the ball inner hole to reach 15.5cm to obtain the end surface.
As shown in fig. 4, the spherical positioning tool includes two spherical tool bodies 20, and one side of a single spherical tool body 20 is provided with a spherical positioning groove 21 adapted to a spherical surface; the spherical tool body 20 is made of pig iron, and a rubber buffer layer is laid in the spherical positioning groove 21 to prevent the spherical positioning tool from scratching the spherical surface.
S5, drilling and milling a stepped hole: continuing to drill and mill the first through hole 1-1 from the center of the end face to the center of the sphere by means of the spherical positioning tool on the vertical machining center, wherein the diameter of the first through hole is 25mm, and the length of the first through hole is 23.5 mm; milling an orifice by using an R-angle cutter to obtain a chamfered end face at one side; then, drilling and milling a second through hole at the bottom of the first through hole 1-1 towards the direction far away from the center of the sphere, wherein the diameter of the second through hole is 12mm, and milling a bottom chamfer of the first through hole 1-1 and an orifice chamfer of the second through hole by using an R-angle cutter; the obtained inner hole is a stepped hole.
S6, milling a crescent groove: positioning the ball body by using an inner hole positioning tool, and milling the crescent groove by using a milling cutter with the diameter of 44mm, so that the groove width W of the crescent groove is 9mm, and the distance from the groove bottom to the ball center is 14.5 mm; the structure of the inner hole positioning tool is shown in fig. 5, specifically, the inner hole positioning tool comprises an inner hole tool body 40, an inner hole placing groove 400 is formed in the upper surface of the inner hole tool body 40, and the inner hole placing groove 400 is matched with a spherical surface; meanwhile, a cylinder mounting hole 410 is formed in the center of the bottom of the inner bore placing groove 400, an inner bore positioning cylinder 41 is disposed in the cylinder mounting hole 410, the inner bore cylinder 41 extends downward, the inner bore positioning cylinder 41 comprises a first cylinder section 411 and a second cylinder section 412 from bottom to top, the first cylinder section 411 is disposed in the first through hole 1-1, and the second cylinder section 412 is disposed in the second through hole, further, the length of the first cylinder section 411 is greater than that of the first through hole 1-1, even if a crescent is milled, one end of the first cylinder section 412 extends out of a sphere, so that a claw of a vertical machining center can clamp one end of the first cylinder section 412 and the other end of the second cylinder section 412, thereby fixing the sphere and ensuring the precision of the crescent, a lock nut 42 is provided on the other end of the second cylinder section 412.
S7, drilling a through air hole: positioning by using a vent hole drilling tool, and drilling and milling the vent hole with the diameter of 2mm, wherein the vent hole drilling tool at least comprises a positioning surface 51 and a processing surface 52 opposite to the positioning surface 51, as shown in fig. 6; the positioning surface 51 comprises a positioning structure comprising a first arc segment 501, a second arc segment 502 and a third arc segment 503; the two ends of the second arc segment 502 are connected with the first arc segment 501 and the third arc segment 503, and the second arc segment 501 is a convex arc surface corresponding to the crescent 1-2; the first arc segment 501 and the third arc segment 503 are concave arc surfaces corresponding to spherical surfaces; the processing surface 52 is provided with a processing hole 53, when the second arc segment 502 is attached to the crescent groove 1-2, the central axis of the processing hole 53 is axially perpendicular to the center of the inner hole of the sphere, and the central axis of the processing hole 53 is perpendicular to a tangent line passing through the center point of the second arc segment 502; the diameter of the processing hole 53 is equal to the diameter of the vent holes 1-3.
Furthermore, a first positioning groove 504 is formed at the intersection of the first arc segment 501 and the second arc segment 502, and the central axis of the first positioning groove 504 is parallel to the central axis of the inner hole 1-1 of the sphere; a second positioning groove 505 is formed at the intersection of the third arc segment 503 and the second arc segment 502, and the central axis of the second positioning groove 505 is parallel to the central axis of the inner hole 1-1 of the sphere.
S8, wire-electrode cutting of special-shaped holes: and cutting the second through hole line to obtain a second special-shaped hole according to the drawing requirement.
S9, polishing a spherical surface: fixing the sphere on a lathe by using a polishing positioning tool, and polishing the spherical surface according to the requirements of a drawing, wherein the roughness of the outer circle of the sphere is lower than 0.2; as shown in fig. 7, the polishing positioning tool includes a polishing mandrel 60, an anti-slip bush 61 covering the polishing mandrel 60, and a locking component; wherein, locking Assembly is including being used for the restriction the gliding lock sleeve 62 of anti-skidding bush 61 along polishing dabber 60, lock sleeve 62 is the round platform form, its side that is the inclined plane with anti-skidding bush 61's chamfer opening looks adaptation, in addition, locking Assembly still includes and is used for disposing lock nut 63 and lock gasket 64 of polishing dabber 60 one side.
Further, the center of the end surfaces at the two ends of the polishing mandrel 60 is provided with a center hole 600 matched with the center of the machine tool; when polishing spherical surfaces, firstly, one locking sleeve 62 is sleeved on one end of the polishing mandrel 60, then, the anti-slip bush 61 is sleeved on the end, then, the polishing mandrel 60 is inserted into the first through hole 1-1, then, the anti-slip bush 61 is clamped by using the other locking sleeve 62, finally, the first locking sleeve 62 is abutted against the bottom of the first through hole 1-1 through a locking nut 63 and a locking gasket 64, and the anti-slip bush 61 is arranged in the first through hole 1-1 and can be driven to rotate through the friction force between the anti-slip bush 61 and the inner wall of the first through hole 1-1. In order to avoid the difficulty in separating the anti-slip bush 61 from the first through hole 1-1 due to the formation of vacuum, a polishing groove is formed on the anti-slip bush 61 and is communicated with the vent hole 1-4.
S10, post-processing: and (5) cleaning, inspecting and warehousing.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. The machining method of the special-shaped hole ball body is characterized in that the special-shaped hole ball body comprises a special-shaped through hole, a crescent groove and a vent hole, the special-shaped through hole comprises a first through hole and a second special-shaped hole which are communicated, the longitudinal section of the first through hole is circular, and the longitudinal section of the second special-shaped hole is a triangle of which at least one side is an arc line segment; the maximum distance between the center of the longitudinal section of the second special-shaped hole and each vertex is smaller than the radius of the first through hole; the processing method of the irregular hole ball body comprises the following steps:
s1, carrying out heat treatment on a blank: the blank is a bar stock;
s2, semi-finish turning a spherical surface to obtain a coarse material piece: the rough material part comprises a ball body part and a ball handle, the ball body part is provided with a ball handle plane, the ball handle extends outwards from the ball handle plane, and a handle blind hole with internal threads is formed in the end face, far away from the ball body part, of one end of the ball handle;
s3, finely turning a spherical surface: installing the coarse material on a common ball lathe through a finish turning positioning tool, and finish turning the spherical surface to ensure that the radius of the sphere meets the requirement of a drawing, and ensure that the roughness of the spherical surface is 1.6 and the sphericity is 0.02;
s4, end face milling: fixing the spherical surface on a vertical machining center by using a spherical surface positioning tool, and after correcting the plane of the ball handle and the excircle of the spherical part, milling the distance from the plane of the ball handle to the center of the ball inner hole to reach a set distance to obtain an end surface;
s5, drilling and milling a stepped hole: continuously drilling and milling the first through hole from the center of the end face to the center of the sphere on the vertical machining center, and milling an orifice by using an R-shaped cutter to obtain a chamfered end face at one side; then, drilling and milling a second through hole at a set radius from the bottom of the first through hole to a direction far away from the center of a sphere, and milling a bottom chamfer of the first through hole and an orifice chamfer of the second through hole by using an R-angle cutter;
s6, milling a crescent groove: positioning the ball body by using an inner hole positioning tool, and milling the crescent groove by using a milling cutter;
s7, drilling a ventilation hole: positioning by using a vent hole drilling tool, and drilling and milling the vent hole;
s8, wire-electrode cutting of special-shaped holes: cutting the second through hole line to obtain a second special-shaped hole according to the drawing requirement;
s9, polishing a spherical surface: fixing a sphere on a lathe by using a polishing positioning tool, polishing the spherical surface according to the drawing requirement, and ensuring that the roughness of the outer circle of the sphere is lower than 0.2;
s10, post-processing: and (5) cleaning, inspecting and warehousing.
2. The machining method of the irregularly-shaped hole sphere according to claim 1, wherein the finish turning positioning tool comprises a tool main body which is detachably mounted at one end of a general sphere lathe main shaft and is provided with a mounting through hole, and a pull rod for connecting the sphere handle; the tool main body comprises a tool rod part and a tool head part, and one end of the tool rod part, which is far away from the tool head part, is in taper fit with an inner hole of a main shaft of the common ball lathe; the tool head is provided with an avoiding structure, a connecting through hole is formed in the end face of the tool head, the ball handle is inserted into one end of the connecting through hole, and the pull rod penetrates through an inner hole of a main shaft of the common ball car and the mounting through hole and is in threaded connection with the handle blind hole.
3. The method for machining a irregularly-shaped hole sphere according to claim 2, wherein the rough material piece is mounted on a common sphere lathe through a finish turning positioning tool, and the step of finish turning the sphere comprises the following steps:
firstly, the tool rod part is in taper fit in an inner hole of a machine tool spindle; then, the pull rod sequentially penetrates through an inner hole of a main shaft of the machine tool and the mounting through hole from the outer side of the machine tool, and then the ball shank is inserted into the connecting through hole, so that the pull rod is in threaded connection with the shank blind hole; one end of the pull rod, which is far away from the tool rod part, is locked by a nut and a gasket, so that the plane of the ball handle is abutted against the end surface of the tool head.
4. The machining method of the irregularly-shaped hole sphere according to claim 1, wherein the spherical positioning tool comprises two spherical tool bodies, and one side of each spherical tool body is provided with a spherical positioning groove matched with a spherical surface; the spherical tool body is made of pig iron, and a rubber buffer layer is laid in the spherical positioning groove.
5. The method for processing the irregularly-shaped hole sphere according to claim 1, wherein the inner hole positioning tool comprises an inner hole tool body and an inner hole positioning column, an inner hole placing groove matched with the outer circle of the sphere part is formed in the upper surface of the inner hole tool body, a column mounting hole is formed in the center of the bottom of the inner hole placing groove, and the inner hole positioning column is detachably mounted in the column mounting hole and extends downwards; the bore positioning cylinder including a first cylinder section disposed within the first through bore and a second cylinder section disposed within the second through bore; when a crescent groove is milled, the first cylinder section extends out of the ball part, and a clamping jaw of the vertical machining center clamps one end of the first cylinder.
6. The method for machining the irregularly-shaped hole sphere according to claim 1, wherein the vent hole drilling tool at least comprises a positioning surface and a machining surface arranged opposite to the positioning surface; the positioning surface comprises a positioning structure, and the positioning structure comprises a first arc section, a second arc section and a third arc section; the two ends of the second arc section are connected with the first arc section and the third arc section, and the second arc surface arc section is a convex arc surface corresponding to a crescent groove of the floating ball body to be processed; the first arc section and the third arc section are concave arc surfaces corresponding to the spherical surface of the floating ball body to be processed; the processing surface is provided with a processing hole, when the second arc section is attached to a crescent groove of a floating ball of a ball body to be processed, the central axis of the processing hole is axially vertical to the central axis of a central through hole of the floating ball body, and the central axis of the processing hole is vertical to a tangent line passing through the central point of the second arc section; the diameter of the processing hole is equal to that of the vent hole of the floating ball body to be processed.
7. The machining method of the irregularly-shaped hole ball body according to claim 6, wherein a first positioning groove is formed at the intersection of the first arc section and the second arc section, and the central axis of the first positioning groove is parallel to the central axis of the central through hole of the floating ball body to be machined; and a second positioning groove is formed at the intersection of the third arc section and the second arc section, and the central axis of the second positioning groove is parallel to the central axis of the central through hole of the spherical floating ball to be processed.
8. The machining method for the irregularly-shaped hole sphere according to claim 1, wherein the polishing and positioning tool comprises a polishing mandrel, an anti-slip bush and a locking assembly, wherein the anti-slip bush is coated outside the polishing mandrel; the center of the end surfaces of the two ends of the polishing mandrel is provided with a center hole matched with the center of a machine tool; the locking assembly comprises a locking nut, a locking gasket and two locking sleeves in a circular truncated cone shape; when a spherical surface is polished, one end of the polishing mandrel is limited in the first through hole by the two locking sleeves, and the anti-skid bush is sleeved outside the polishing mandrel between the two locking sleeves; the lock nut and the gasket are arranged at the other end of the polishing mandrel.
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| CN109773430A (en) * | 2019-03-22 | 2019-05-21 | 博谷机械设备（昆山）有限公司 | Heavy-duty motor end cap processes preparation process |
| CN111037236A (en) * | 2019-12-31 | 2020-04-21 | 苏州工业园区博斯塔机械有限公司 | Method for machining small-caliber ball valve |
| CN212169670U (en) * | 2020-04-27 | 2020-12-18 | 江苏神通阀门股份有限公司 | Positioning expansion sleeve for machining ball |
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2022
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| CN205147365U (en) * | 2015-12-08 | 2016-04-13 | 新昌县武鹏机械有限公司 | Frock clamp of processing sphere |
| CN205237267U (en) * | 2015-12-24 | 2016-05-18 | 重庆市搏润模具有限公司 | Special frock of line cutting process irregularly -shaped hole |
| CN109773430A (en) * | 2019-03-22 | 2019-05-21 | 博谷机械设备（昆山）有限公司 | Heavy-duty motor end cap processes preparation process |
| CN111037236A (en) * | 2019-12-31 | 2020-04-21 | 苏州工业园区博斯塔机械有限公司 | Method for machining small-caliber ball valve |
| CN212169670U (en) * | 2020-04-27 | 2020-12-18 | 江苏神通阀门股份有限公司 | Positioning expansion sleeve for machining ball |
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