CN113618339B - Machining method of piston ring turning clamp - Google Patents
Machining method of piston ring turning clamp Download PDFInfo
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- CN113618339B CN113618339B CN202110955847.5A CN202110955847A CN113618339B CN 113618339 B CN113618339 B CN 113618339B CN 202110955847 A CN202110955847 A CN 202110955847A CN 113618339 B CN113618339 B CN 113618339B
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- milling
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- 238000003754 machining Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims description 19
- 238000003801 milling Methods 0.000 claims abstract description 48
- 238000003825 pressing Methods 0.000 claims abstract description 36
- 238000005553 drilling Methods 0.000 claims abstract description 23
- 238000000227 grinding Methods 0.000 claims abstract description 12
- 239000002893 slag Substances 0.000 claims abstract description 9
- 238000003466 welding Methods 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000003672 processing method Methods 0.000 claims abstract description 5
- 238000004140 cleaning Methods 0.000 claims description 24
- 238000005520 cutting process Methods 0.000 claims description 13
- 238000004080 punching Methods 0.000 claims description 4
- 230000005347 demagnetization Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The invention discloses a processing method of a turning fixture of a piston ring, which relates to a processing method of a turning fixture for fixing the piston ring, and aims to solve the problem that the existing turning fixture of the piston ring can not effectively fix the piston ring and can cause deformation of the piston ring in processing, and the processing method comprises the steps of blanking and removing welding slag; roughly milling the upper and lower surfaces of each closed ring; grinding the upper and lower surfaces of each closed ring; drawing an outline; milling each closed ring; scribing a groove line; boring concave grooves on the first closing ring and the second closing ring respectively; assembling each closed ring, drilling and scribing an inner circular line; turning an inner round line; milling a counter bore on the third closed ring; turning an outer circle, an inner hole and each step surface of the clamp body; drilling the clamp body; the sharp edges of the clamp body are dulled, and holes are drilled; turning two end surfaces, the outer diameter, the inner diameter and a 4 multiplied by 4 empty cutter of the pressing block; heat treatment; turning the outer diameter, the inner diameter, the left end face and the chamfer of the pressing block; milling each surface of the pressing block; the invention relates to a turning clamp for machining a piston ring, and belongs to the field of turning clamps.
Description
Technical Field
The invention relates to a machining method of a turning clamp for fixing a piston ring, and belongs to the field of turning clamps.
Background
The piston ring is a metal ring for being inserted into the groove of the piston, and is a metal elastic ring having a large outward expansion deformation, which is fitted into an annular groove having a cross section corresponding thereto. The reciprocating and rotating piston ring forms a seal between the outer circumferential surface of the ring and the cylinder and one side of the ring and the ring groove by means of a pressure difference of gas or liquid. The diameter of the outer circle of the existing part piston ring is over 480mm, the thickness is only 13mm, the existing part piston ring is easy to deform in the process of machining, and the machining quality of the clamp is important for ensuring that the piston ring is not deformed in the turning process.
Disclosure of Invention
The invention aims to solve the problem that the existing piston ring turning clamp cannot effectively fix a piston ring and can cause deformation of the piston ring in machining, and further provides a machining method of the piston ring turning clamp.
The technical scheme adopted by the invention is as follows:
the method comprises the following steps:
step one, blanking and removing welding slag;
respectively blanking the first closed ring, the second closed ring and the third closed ring on a numerical control gas cutting bed, cutting off redundant rim charge, and respectively removing welding slag for the first closed ring, the second closed ring and the third closed ring after cutting;
step two, roughly milling the upper surface and the lower surface of each closed ring;
respectively rough milling the upper surface and the lower surface of the first closed ring, the upper surface and the lower surface of the second closed ring and the upper surface and the lower surface of the third closed ring on a numerical control milling machine;
grinding the upper and lower surfaces of each closed ring;
simultaneously grinding the upper surface and the lower surface of the first closed ring, the upper surface and the lower surface of the second closed ring and the upper surface and the lower surface of the third closed ring on a surface grinder, carrying out demagnetization treatment on each closed ring after grinding, and cleaning;
step four, scribing outline;
scribing outline lines of the first closed ring, the second closed ring and the third closed ring respectively;
milling each closed ring;
aligning on a numerical control milling machine, respectively milling an inner ring and an outer ring of a first closed ring, two second grooves, an inner ring, an outer ring and a third groove of the second closed ring, an inner ring, an outer ring, a fourth groove and bosses at two ends of the third closed ring;
step six, scribing a groove line;
respectively scribing the groove lines at the horizontal centers of the two ends of the first closed ring and the horizontal centers of the two ends of the second closed ring;
boring concave grooves on the first closed ring and the second closed ring respectively;
aligning on a boring machine, and boring concave grooves at two ends of a first closed ring and concave grooves at two ends of a second closed ring respectively;
step eight, assembling each closed ring, drilling holes and scribing inner circular lines;
placing the first closed ring, the second closed ring and the third closed ring on the same plane, sequentially connecting the first closed ring, the second closed ring and the third closed ring end to end in a anticlockwise sequence to form a circular ring, drilling a through hole at the joint of the first closed ring and the second closed ring, the joint of the second closed ring and the third closed ring and the joint of the third closed ring and the first closed ring, driving a pin into the through hole for firmly punching, scribing an inner circle line D1 and an inner circle line D2 on the upper surface of the circular ring, and drilling a fifth through hole on the first closed ring, a seventh through hole on the second closed ring and a ninth through hole on the third closed ring respectively;
step nine, turning an inner round wire;
aligning on a lathe, and turning an inner circular line D1 and an inner circular line D2 in sequence;
milling a counter bore on the third closed ring;
milling a fourth counter bore on the third closed ring on a numerical control milling machine;
step eleven, turning the outer circle, the inner hole and each step surface of the clamp body;
turning excircles L1, L3 and L4, inner holes L5, L6 and L7 and step surfaces of the clamp body on a lathe in sequence, and cleaning;
step twelve, drilling the clamp body;
drilling a plurality of second through holes and center holes of a plurality of first threaded through holes on a fixture body on a numerical control milling machine, milling a first counter bore by using counter bits, and cleaning;
thirteen, dulling sharp edges of the clamp body, and drilling holes;
sharp edge blunting is carried out on the clamp body, a plurality of first threaded through holes are drilled and tapped on a drilling machine, drawing numbers are punched, and cleaning is carried out;
fourteen, turning two end surfaces, the outer diameter, the inner diameter and 4 multiplied by 4 empty knife positions of the pressing block;
turning two end surfaces, the outer diameter, the inner diameter and the 4 multiplied by 4 empty knife parts of the pressing block in sequence, and cleaning;
fifteen, heat treatment;
heat treatment and cleaning of the pressing block;
sixthly, turning the outer diameter, the inner diameter, the left end face and the chamfer of the pressing block;
aligning on a lathe, turning the outer diameter, the inner diameter, the left end face and chamfer angles of a pressing block, and cleaning;
seventeenth, milling each surface of the pressing block;
and (5) aligning on a numerical control milling machine, milling each surface of the pressing block, and cleaning.
The beneficial effects are that:
the invention provides a processing method of a piston ring turning fixture, which can meet the requirement of mass production in practical application, has simple structure, convenient processing and good practical application effect, limits the radial freedom degree of a piston ring blank in the processing process by arranging a first closed ring, a second closed ring and a third closed ring, and limits the axial freedom degree of the piston ring in the processing process by arranging a compression ring, a fixture body and a pressing block, so that the quality of the fixture is improved, the processing precision is improved, and the processing quality is finally ensured.
Drawings
FIG. 1 is a top view of the present clamp;
FIG. 2 is a cross-sectional view of B-B in FIG. 1;
FIG. 3 is a cross-sectional view of C-C of FIG. 1;
FIG. 4 is a top view of the clip body 1;
fig. 5 is a front sectional view of the clamp body 1;
FIG. 6 is a top view of the compression ring 2;
FIG. 7 is a front cross-sectional view of the press ring 2;
fig. 8 is a top view of the first closing ring 3;
FIG. 9 is a cross-sectional view of D-D of FIG. 8;
FIG. 10 is a cross-sectional view of E-E of FIG. 8;
FIG. 11 is a cross-sectional view of F-F in FIG. 8;
fig. 12 is a plan view of the second closing ring 4;
FIG. 13 is a cross-sectional view of G-G of FIG. 12;
FIG. 14 is a cross-sectional view of H-H of FIG. 12;
FIG. 15 is a cross-sectional view of J-J of FIG. 12;
fig. 16 is a top view of the third closing ring 5;
FIG. 17 is a cross-sectional view of K-K of FIG. 16;
FIG. 18 is a cross-sectional view of M-M of FIG. 16;
FIG. 19 is a front cross-sectional view of compact 8;
FIG. 20 is an enlarged view of a portion of I in FIG. 19;
FIG. 21 is a side view of the compact 8;
FIG. 22 is a front view of the swing bolt 7-3;
FIG. 23 is a top view of the swing bolt 7-3;
FIG. 24 is a structural view of the stud bolt 7-3;
Detailed Description
The first embodiment is as follows: referring to fig. 1 to 24, a method for machining a turning jig for a piston ring according to the present embodiment includes the steps of:
step one, blanking and removing welding slag;
and respectively blanking the first closed ring 3, the second closed ring 4 and the third closed ring 5 on the numerical control gas cutting bed, cutting off redundant rim charge, and processing parameters of the numerical control gas cutting bed: the cutting speed v1 is 350 mm/min-450 mm/min, the amount of each surface of the first closed ring 3, the second closed ring 4 and the third closed ring 5 is 3mm, and after cutting, the first closed ring 3, the second closed ring 4 and the third closed ring 5 are respectively subjected to welding slag removal treatment, so that the welding slag is prevented from damaging the surfaces of the closed rings, and the use and the subsequent processing are prevented from being influenced;
step two, roughly milling the upper surface and the lower surface of each closed ring;
the upper surface and the lower surface of the first closed ring 3, the upper surface and the lower surface of the second closed ring 4 and the upper surface and the lower surface of the third closed ring 5 are respectively rough-milled on a numerical control milling machine, so that the follow-up processing of the fifth through hole 3-2 on the first closed ring 3, the seventh through hole 4-2 on the second closed ring 4 and the ninth through hole 5-2 on the third closed ring 5 is facilitated, the follow-up processing of two ends of each closed ring is facilitated, the amount of the upper surface and the lower surface of each closed ring is 0.4mm-0.5mm, and the grinding processing of the third step is facilitated;
grinding the upper and lower surfaces of each closed ring;
the upper surface and the lower surface of the first closed ring 3, the upper surface and the lower surface of the second closed ring 4 and the upper surface and the lower surface of the third closed ring 5 are simultaneously ground on a surface grinder, the distances between the upper surface and the lower surface of each closed ring after the processing are 36mm, the arrangement is convenient for the subsequent processing of the fifth through hole 3-2 on the first closed ring 3, the seventh through hole 4-2 on the second closed ring 4 and the ninth through hole 5-2 on the third closed ring 5, the subsequent processing of the two ends of each closed ring is convenient, the demagnetization treatment is carried out on each closed ring after the grinding, the cleaning is carried out, the welding slag is prevented from damaging the surfaces of each closed ring, the using and the subsequent processing are influenced, and the thicknesses of the first closed ring 3, the second closed ring 4 and the third closed ring 5 after the grinding are sequentially spliced to form a circle clamp of the processed piston ring A, and the three closed rings are required to be processed together to form the thicknesses of the matched parts;
step four, scribing outline;
scribing the outline lines of the first closed ring 3, the second closed ring 4 and the third closed ring 5 respectively, and scribing the positions on the closed rings to be processed, so that the milling processing in the fifth step is facilitated;
milling each closed ring;
aligning on a numerical control milling machine, respectively milling an inner ring and an outer ring of a first closed ring 3, two second grooves 3-1, an inner ring and an outer ring of a second closed ring 4, a third groove 4-1, an inner ring and an outer ring of a third closed ring 5, a fourth groove 5-1 and bosses 5-3 at two ends, wherein after milling the bosses 5-3 at two ends of the third closed ring 5, the distance between the bottom surface of the third closed ring 5 and each boss 5-3 is 8+/-0.1. The first closed ring 3, the second closed ring 4 and the third closed ring 5 are spliced in sequence to form a circular ring, the diameter of an inner ring of the circular ring after milling is 485mm, the diameter of an outer ring of the circular ring is 605mm, the depths of the second groove 3-1, the third groove 4-1 and the fourth groove 5-1 are 18mm, and the grooves on each closed ring are milled at one time, so that the circular ring is arranged, and other relevant sizes except the grooves are ensured;
step six, scribing a groove line;
groove line scribing is respectively carried out on the horizontal centers of the two ends of the first closed ring 3 and the horizontal centers of the two ends of the second closed ring 4, so that subsequent processing of concave grooves of the two ends of the first closed ring 3 and the second closed ring 4 is facilitated, wherein the concave grooves refer to concave frames and concave structures of the two ends of the first closed ring 3, and the concave frames and concave structures of the two ends of the second closed ring 4;
step seven, boring concave grooves on the first closing ring 3 and the second closing ring 4 respectively;
aligning on a boring machine, respectively boring concave grooves at two ends of a first closed ring 3 and concave grooves at two ends of a second closed ring 4, wherein the length of the concave groove at one end of the first closed ring 3 connected with the second closed ring 4 is 40mm, the width is 20mm, the depth is 50mm, the length of the concave groove at one end of the first closed ring 3 connected with a third closed ring 5 is equal to the width of the first closed ring 3, the width is 20mm, the depth is 64mm, the length of the concave groove at one end of the second closed ring 4 connected with the third closed ring 5 is equal to the width of the second closed ring 4, the width is 20mm, the depth is 64mm, and the length of the concave groove at one end of the second closed ring 4 connected with the first closed ring 3 is 105.5mm, the width is 20mm, and the depth is 64mm;
step eight, assembling each closed ring, drilling holes and scribing inner circular lines;
placing the first closed ring 3, the second closed ring 4 and the third closed ring 5 on the same plane, sequentially connecting the first closed ring 4 and the third closed ring 5 end to end in a counter-clockwise order to form a circular ring, simultaneously keeping a distance of 6mm between the middle dividing surfaces of the second closed ring 4 and the first closed ring 3, clamping a 6mm gasket on the middle dividing surfaces to ensure the distance, drilling a through hole at the joint of the first closed ring 3 and the second closed ring 4 and the joint of the second closed ring 4 and the third closed ring 5, drilling a through hole at the joint of the third closed ring 5 and the first closed ring 3, wherein the diameter of the through hole is 20+0.033/0, punching a phi 20 pin 6 into the circular ring, inserting a movable joint bolt 7-3 into a groove at the joint before the joint of the first closed ring 3 and the second closed ring 4, punching a hexagon nut at the thread of the movable joint bolt 7-3 from the upper direction of the joint, screwing a round head center position of the bolt 7-3, fixing the first closed ring 3, the second closed ring 4 and the third closed ring 5 on the circular ring 5, and the seventh closed ring 2+2, and the diameter of the seventh closed ring 5 are respectively, and the diameter of the through hole is 2+0.0.033/0, the diameter of the seventh closed ring 5 and the diameter of the through hole is 2+2.5 and the ninth closed ring 2 and the diameter of the through hole is 2.5-5 and the diameter of the seventh through hole is 2+0.2 and 5-5 and 2mm and 2-5;
step nine, turning an inner round wire;
aligning on a lathe, and turning an inner circular line D1 and an inner circular line D2 in sequence;
milling a counter bore on the third closing ring 5;
milling a fourth counter bore 5-2-1 on the third closed ring 5 on a numerical control milling machine, wherein the fourth counter bore 5-2-1 is phi 40+0.062/0, so that the relative positions of the fourth counter bore 5-2-1 and tenth through holes 5-3-1 at two ends of the third closed ring 5 are ensured;
step eleven, turning the outer circle, the inner hole and each step surface of the clamp body 1;
turning excircles L1, L3 and L4 of the clamp body 1 on a lathe in sequence, wherein L3 is 605mm, L4 is 420mm, inner holes L5, L6 and L7 and each step surface, L5 is 460 mm, L6 is 440mm, L7 is 240mm, and cleaning;
step twelve, drilling the clamp body 1;
drilling a plurality of second through holes 1-2-1 and a plurality of center holes of first threaded through holes 1-1-2 on a numerical control milling machine, uniformly distributing the plurality of second through holes 1-2-1 and the plurality of first threaded through holes 1-1-2 on the clamp body 1, and milling a first counter bore 1-2-2 by countersink so as to facilitate the connection of a nut and a stud 7-1 during installation of the clamp and cleaning;
thirteen, the sharp edge of the clamp body 1 is dulled, and drilling is carried out;
sharp edge blunting is carried out on the clamp body 1, a plurality of first threaded through holes 1-1-2 are drilled and tapped on a drilling machine, the first threaded through holes 1-1-2 are used for penetrating through conventional bolts 7-2, the clamp body 1 is fixedly connected with a compression ring 2, drawing numbers are printed, and cleaning is carried out;
fourteen steps, turning two end surfaces, the outer diameter, the inner diameter and 4×4 empty knife positions of the pressing block 8, wherein the 4×4 empty knife positions are as shown in fig. 20;
processing bar stock with phi of 100 multiplied by 40mm into a pressing block 8, firstly turning two end faces of the bar stock, and turning the bar stock with phi of 40mm to 36mm; turning the outer diameter of the pressing block 8, turning the outer diameter of the bar to 40mm from one end of the bar, turning the length to 18mm, turning the outer diameter of the rest bar to 97mm, turning and forming according to the figure 19, finally turning the inner diameter and 4X 4 empty knife, wherein the whole length L10 of the pressing block 8 is 40mm, the height L11 is 54mm, the width L12 is 36mm, the outer diameter phi is 40mm, the inner diameter phi is 26mm, the average amount of the outer diameter and the inner diameter is 3mm, and cleaning;
fifteen, heat treatment;
heat-treating the pressing block 8, wherein the hardness of the pressing block 8 after heat treatment is 35HRC-40HRC, and cleaning;
sixthly, turning the outer diameter, the inner diameter, the left end face and the chamfer of the pressing block 8;
aligning on a lathe, turning the outer diameter, the inner diameter, the left end face and chamfer angles of the pressing block 8, and cleaning;
seventeenth, milling each surface of the pressing block 8;
and (5) aligning on a numerical control milling machine, milling each surface of the pressing block 8, and cleaning.
The second embodiment is as follows: the method for machining a turning jig for a piston ring according to the present embodiment, which includes a jig body 1, a pressing ring 2, a first closing ring 3, a second closing ring 4, a third closing ring 5, a pin 6, a bolt and a pressing block 8, is described with reference to fig. 1 to 24, the bolt includes a stud bolt 7-1, a conventional bolt 7-2 and an articulated bolt 7-3,
the clamp body 1 is a cylinder 1-1, a first flange 1-2 is fixedly arranged at the center of the upper surface of the cylinder 1-1, a circular ring 1-3 is fixedly arranged at the center of the upper surface of the first flange 1-2, the cylinder 1-1, the first flange 1-2 and the circular ring 1-3 are integrated, a first through hole 1-1 is processed at the center of the lower surface of the cylinder 1-1, a plurality of first threaded through holes 1-1-2 are uniformly processed in a ring shape around the first through hole 1-1-1, a plurality of second through holes 1-2-1 are uniformly processed on the first flange 1-2, a first counter bore 1-2-2 is processed at the bottom end of each second through hole 1-2-1, and the inner wall of the circular ring 1-3 is processed into a step shape.
The compression ring 2 is a cylinder with a stepped outer surface, a first groove 2-1 is processed in the center of the lower surface, a third through hole 2-2 and a plurality of fourth through holes 2-3 are processed in the bottom surface of the first groove 2-1, the third through hole 2-2 is positioned in the center of the bottom surface of the first groove 2-1, the plurality of fourth through holes 2-3 evenly encircle around the third through hole 2-2, and the fourth through holes 2-3 are flat key-shaped through holes.
The first closed ring 3, the second closed ring 4 and the third closed ring 5 are all circular rings of 1/3, two second grooves 3-1 are processed on the upper surface of the first closed ring 3, a fifth through hole 3-2 is processed between the two second grooves 3-1, a second counter bore 3-2-1 is processed at the top end of the fifth through hole 3-2, a first concave frame 3-3 is mounted on the outer diameter surface of one end of the first closed ring 3, the first closed ring 3 and the first concave frame 3-3 are integrated, the other end of the first closed ring 3 is processed into a concave shape along the horizontal direction, and a sixth through hole 3-4 is vertically processed on the concave shape.
Two third grooves 4-1 are formed in the upper surface of the second closed ring 4, a seventh through hole 4-2 is formed between the two third grooves 4-1, a third counter bore 4-2-1 is formed in the top end of the seventh through hole 4-2, one end of the second closed ring 4 is processed into a concave shape along the horizontal direction, an eighth through hole 4-3 is vertically formed in the concave shape, a second concave frame 4-4 is mounted on the outer diameter surface of the other end of the second closed ring 4, and an eleventh through hole 4-4-1 is formed in the second concave frame 4-4.
Two fourth grooves 5-1 are formed in the upper surface of the third closing ring 5, a ninth through hole 5-2 is formed between the two fourth grooves 5-1, a fourth counter bore 5-2-1 is formed in the top end of the ninth through hole 5-2, a boss 5-3 is respectively formed in the center of two ends of the third closing ring 5, and a tenth through hole 5-3-1 is formed in each boss 5-3.
The piston ring A is placed on the circular ring 1-3 of the clamp body 1, the first closed ring 3, the second closed ring 4 and the third closed ring 5 are sequentially spliced to form a circular ring, the joint of each two closed rings is firmly punched by a pin 6, the circular ring is fixedly installed on the first flange 1-2 of the clamp body 1, the outer diameter of the piston ring A is abutted against the inner wall of the circular ring, the circular ring limits the radial freedom degree of the piston ring A in the processing process, a pressing block 8 is fixedly installed in the second counter bore 3-2-1 of the first closed ring 3, the third counter bore 4-2-1 of the second closed ring 4 and the fourth counter bore 5-2-1 of the third closed ring 5 through a double-headed bolt 7-1, one side of each pressing block 8 is abutted against the edge position of the upper surface of the piston ring A, the pressing ring 2 penetrates through the inner diameter of the piston ring A and is fixedly installed on the cylinder 1-1 of the clamp body 1 through a conventional bolt 7-2, the stepped outer surface of the piston ring 2 is matched with the circular ring 1-3 of the clamp body 1, and the pressing ring 1 is coaxially arranged in the clamp body 1-3, and the pressing ring 1 is coaxially arranged in the same manner as the clamp body and the other pressing rings are axially limited in the processing modes.
Claims (5)
1. A processing method of a piston ring turning clamp is characterized by comprising the following steps: the method comprises the following steps:
step one, blanking and removing welding slag;
respectively blanking the first closed ring (3), the second closed ring (4) and the third closed ring (5) on a numerical control gas cutting bed, cutting off redundant rim charge, and respectively removing welding slag for the first closed ring (3), the second closed ring (4) and the third closed ring (5) after cutting;
step two, roughly milling the upper surface and the lower surface of each closed ring;
respectively rough milling the upper surface and the lower surface of the first closed ring (3), the upper surface and the lower surface of the second closed ring (4) and the upper surface and the lower surface of the third closed ring (5) on a numerical control milling machine;
grinding the upper and lower surfaces of each closed ring;
simultaneously grinding the upper surface and the lower surface of the first closed ring (3), the upper surface and the lower surface of the second closed ring (4) and the upper surface and the lower surface of the third closed ring (5) on a surface grinder, carrying out demagnetization treatment on each closed ring after grinding, and cleaning;
step four, scribing outline;
scribing the outline of the first closed ring (3), the second closed ring (4) and the third closed ring (5) respectively;
milling each closed ring;
aligning on a numerical control milling machine, respectively milling an inner ring, an outer ring and two second grooves (3-1) of a first closed ring (3), an inner ring, an outer ring and a third groove (4-1) of a second closed ring (4), an inner ring, an outer ring and a fourth groove (5-1) of a third closed ring (5) and bosses (5-3) at two ends;
step six, scribing a groove line;
respectively scribing the groove lines at the horizontal centers of the two ends of the first closed ring (3) and the horizontal centers of the two ends of the second closed ring (4);
boring concave grooves on the first closing ring (3) and the second closing ring (4) respectively;
aligning on a boring machine, and boring concave grooves at two ends of the first closing ring (3) and concave grooves at two ends of the second closing ring (4) respectively;
step eight, assembling each closed ring, drilling holes and scribing inner circular lines;
placing the first closed ring (3), the second closed ring (4) and the third closed ring (5) on the same plane, sequentially connecting the first closed ring (3) and the second closed ring (4) end to end in a anticlockwise sequence to form a circular ring, drilling a through hole at the joint of the first closed ring (3) and the second closed ring (4) and the joint of the second closed ring (4) and the third closed ring (5) and the joint of the third closed ring (5) and the first closed ring (3), punching a pin (6) firmly, marking an inner circle D1 and an inner circle D2 on the upper surface of the circular ring, and drilling a fifth through hole (3-2) on the first closed ring (3), a seventh through hole (4-2) on the second closed ring (4) and a ninth through hole (5-2) on the third closed ring (5) respectively;
step nine, turning an inner round wire;
aligning on a lathe, and turning an inner circular line D1 and an inner circular line D2 in sequence;
milling a counter bore on the third closing ring (5);
milling a fourth counter bore (5-2-1) on the third closed ring (5) on a numerical control milling machine;
eleventh, turning the outer circle, the inner hole and each step surface of the fixture body (1);
turning outer circles L1, L3 and L4, inner holes L5, L6 and L7 and step surfaces of the clamp body (1) on a lathe in sequence, and cleaning;
twelve, drilling the clamp body (1);
drilling a plurality of second through holes (1-2-1) and center holes of a plurality of first threaded through holes (1-1-2) on a fixture body (1) on a numerical control milling machine, milling a first counter bore (1-2-2) by using a counter bit, and cleaning;
thirteen, the sharp edge of the clamp body (1) is dulled, and drilling is carried out;
sharp edge blunting is carried out on the clamp body (1), a plurality of first threaded through holes (1-1-2) are drilled and tapped on a drilling machine, drawing numbers are punched, and cleaning is carried out;
fourteen steps, turning two end surfaces, the outer diameter, the inner diameter and 4 multiplied by 4 empty knife positions of the pressing block (8);
turning two end faces, an outer diameter, an inner diameter and a 4 multiplied by 4 empty knife of a pressing block (8) in sequence, and cleaning;
fifteen, heat treatment;
heat treating the pressing block (8), and cleaning;
sixthly, turning the outer diameter, the inner diameter, the left end face and the chamfer of the pressing block (8);
aligning on a lathe, turning the outer diameter, the inner diameter, the left end face and the chamfer of a pressing block (8), and cleaning;
seventeenth, milling each surface of the pressing block (8);
and (3) aligning on a numerical control milling machine, milling each surface of the pressing block (8), and cleaning.
2. The method for machining the turning fixture of the piston ring according to claim 1, wherein the method comprises the following steps: and step one, numerical control gas cutting bed processing parameters: the cutting speed v1 is 350 mm/min-450 mm/min, and the amount of each surface of the first closed ring (3), the second closed ring (4) and the third closed ring (5) is 3mm.
3. The method for machining the turning fixture of the piston ring according to claim 1, wherein the method comprises the following steps: and in the second step, the average amount of the upper surface and the lower surface of each closed ring is 0.4mm-0.5mm.
4. A method of machining a turning jig for a piston ring as set forth in claim 3, wherein: and in the third step, the thicknesses of the first closed ring (3), the second closed ring (4), the third closed ring (5) and the like after grinding are equal.
5. A method of machining a turning jig for a piston ring as set forth in claim 3, wherein: the hardness of the pressed block (8) after the heat treatment in the fifteen steps is 35HRC-40HRC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN208358308U (en) * | 2018-06-07 | 2019-01-11 | 亿川科技(成都)有限责任公司 | A kind of fixture for machining piston ring |
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| CN113618339A (en) | 2021-11-09 |
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