CN105598295A - Contraction opening filleting device and machining process for automobile engine plunger - Google Patents
Contraction opening filleting device and machining process for automobile engine plunger Download PDFInfo
- Publication number
- CN105598295A CN105598295A CN201610155570.7A CN201610155570A CN105598295A CN 105598295 A CN105598295 A CN 105598295A CN 201610155570 A CN201610155570 A CN 201610155570A CN 105598295 A CN105598295 A CN 105598295A
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- blank
- guide rail
- reducing
- automobile engine
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
- B21D45/10—Combined ejecting and stripping-off devices
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F2003/0007—Monolithic pistons; One piece constructions; Casting of pistons
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Punching Or Piercing (AREA)
Abstract
The invention discloses a contraction opening filleting device for an automobile engine plunger. The device comprises an upper die base, a lower die base, locating devices, a material returning device and a driving device; the upper die base is composed of an upper die plate, a die shank and male dies; the locating devices comprise the left locating device and the right locating device, the left locating device comprises a left locating air cylinder, a guide rail A, a locating cover plate, an air cylinder fixing plate A and a left locating rod, and the right locating device comprises a right locating air cylinder, a guide rail B, a guiding block B, a mounting block, a right locating rod and an air cylinder fixing plate B; the material returning device comprises a downward-pressing rod, a lever, a return spring, an ejector rod, a hinge block and a hinge shaft; the driving device comprises a driving air cylinder, a guiding block A, a guide rail C and a driving rod. The invention further discloses a machining process for the automobile engine plunger. The contraction opening filleting device and the machining process for the automobile engine plunger have the advantages of being easy to operate, high in machining precision and high in product qualification rate.
Description
Technical field
The present invention relates to the processing unit (plant) of automobile engine plunger, particularly a kind of automobile engine plunger reducing chamfering device and machining process for plunger thereof.
Background technology
Figure 5 shows that the one of car engine plunger. It is by tubular body 1, middle interval platform 2, and the chamfering fillet 3 of the centre bore on platform and centre bore upper end, caudal peduncle 4 forms. Wherein the requirement of the rounding of centre bore upper end is: chamfering radius of circle is 0.5 ~ 0.6 millimeter, 0.8 micron of surface roughness, and circularity requires to be less than 1 micron.
Traditional processing method: the rounding of subpunch centre bore and centre bore upper end, then carry out the distortion of closing up for 6 ~ 8 times, final molding caudal peduncle. The shortcoming of the method has:
I. rush centre bore rounding and close up and separately carry out, needing equipment many, and must carry out multiple clamping, efficiency is low;
II. the distortion of closing up need to be carried out punching press to product, easily causes deformation of products, causes the circularity at chamfering circle place to become large, and product percent of pass is low, only can reach 80 ~ 85%, is a long-standing problem.
Summary of the invention
The object of the invention is to overcome the shortcoming of prior art, a kind of easy to operate, machining accuracy is high and product percent of pass is high automobile engine plunger reducing chamfering device and machining process for plunger thereof are provided.
Object of the present invention is achieved through the following technical solutions: it comprises upper bolster, die shoe, positioner, discharging device and drive unit;
Described upper bolster is made up of cope match-plate pattern, die shank and punch, and described die shank is arranged on cope match-plate pattern top, and punch is arranged on the lower surface of cope match-plate pattern, is also provided with fairlead on described cope match-plate pattern;
Described die shoe is made up of lower bolster, gripper shoe, location bearing, rotating shaft, swivel bearing, holder and die, described location bearing is multiple and is arranged between lower bolster and gripper shoe by connecting axle, described gripper shoe is sleeved on swivel bearing, swivel bearing is sleeved on rotating shaft, described rotating shaft is arranged on holder, described die is arranged on cope match-plate pattern and is positioned at corresponding punch below, guide post is installed on lower bolster, and guide post and fairlead are slidably matched;
Described positioner comprises left positioner and right positioner, described left positioner comprises left positioning cylinder, guide rail A, positioning cover plate, air cylinder fixed plate A and left backstay, described left positioning cylinder and guide rail A are installed on air cylinder fixed plate A, described positioning cover plate is connected with left positioning cylinder and positioning cover plate is slidably installed on guide rail A, one end of described left backstay is fixedly mounted on positioning cover plate, and the other end of left backstay inserts in the gap between adjacent two location bearings;
Described right positioner comprises right positioning cylinder, guide rail B, guide pad B, mounting blocks, right backstay and air cylinder fixed plate B, described guide rail B and right positioning cylinder are arranged on air cylinder fixed plate B, described guide pad B is fixedly mounted in mounting blocks, and on the guide rail B that the two ends of guide pad B are slidably installed corresponding, the piston rod of described right positioning cylinder is connected with mounting blocks, and one end of right backstay is fixedly mounted on mounting blocks, the other end of described right backstay inserts in the gap between adjacent two location bearings;
Described discharging device comprises down-pressed pole, lever, back-moving spring, ejector beam, hinged block and jointed shaft, described lever is hinged in gripper shoe by hinged block and jointed shaft, described back-moving spring one end is connected with the lower surface of gripper shoe, the other end is connected with the upper surface of lever, the upper end of described ejector beam is slidably fitted in die, the lower end of ejector beam contacts with the termination of lever, and described down-pressed pole is arranged on cope match-plate pattern, and be positioned at a lever directly over;
Described drive unit comprises driving cylinder, guide pad A, guide rail C and drive rod, described driving cylinder and guide rail C are arranged on air cylinder fixed plate B, described guide pad A is slidably fitted on guide rail C, and guide pad A is connected with driving cylinder, it is upper that one end of described drive rod is arranged on guide pad A, and the other end of drive rod is positioned at a side of location bearing.
Described punch and die are multiple, and corresponding one by one, in die, be provided with the thimble mould of a plunger rounding, described punch is evenly arranged on the same circumference of cope match-plate pattern lower surface, and described die is evenly arranged on the same circumference of lower bolster upper surface.
The end of described left backstay, right backstay and drive rod is provided with a wedge structure, and this wedge structure is positioned at the gap of two adjacent location bearings, and the dual-side of wedge structure contacts with the outer ring of corresponding location bearing respectively.
Described discharging device is identical with die number, and is evenly distributed on the same circumference of gripper shoe.
A machining process for plunger for automobile engine plunger reducing chamfering device, it comprises the following steps:
S1: anneal of material, raw material are carried out at the temperature of 770 ~ 778 DEG C to spheroidizing processing, the hardness after annealing reaches 68 ~ 75HRB, and metallographic structure reaches 5 ~ 6 grades;
S2: wire drawing, the material in S1 is carried out to wire drawing, after wire drawing, the tolerance of material diameter is in 0.02mm;
S3: cold pier molded blank: by the wire rod after S2 wire drawing, carry out successively blank, integer on Cold header, finally form cold pier blank;
S4: rough annealing: the cold pier blank in S3 is carried out to stress annealing in 645 ~ 655 DEG C, and the hardness after annealing reaches 46 ~ 50HRA;
S5: machine adds for the first time, carries out machined by the cold pier blank after annealing in S4, and preliminary dimension is wanted in processing, and formation machine adds blank;
S6: rush pre-hole, the machine in S5 is added to blank and carry out punching, make to form on the platform of interval in blank a pre-hole;
S7: reducing and rounding, the machine that S6 is processed adds blank and puts into die, then passes through punch reducing and rounding, obtains reducing blank;
S8: machine adds for the second time, carries out machined to the reducing blank of S7, and processing preliminary dimension obtain finished product.
In described S7 step, machine adds blank at least through six reducings, and when reducing for the first time, machine adds blank and just under the effect of thimble mould, forms rounding.
Thimble mould in described S5 is in follow-up reducing process, and thimble mould is all positioned at die.
The present invention has the following advantages: automobile engine plunger reducing chamfering device of the present invention, the rounding of automobile engine plunger and reducing are processed simultaneously, reduce manufacturing procedure, simultaneously in punch process, by coordinating of thimble mould and rounding, ensure that rounding can not be out of shape in follow-up punch process, thereby ensured the machining accuracy of automobile engine plunger rounding; And automobile engine plunger reducing reducing processing continuously on same equipment, only need clamping once, thereby reduce the use amount of equipment, reduce cost, the mismachining tolerance of simultaneously having avoided automobile engine plunger multiple clamping to bring, thereby improve the machining accuracy of automobile engine plunger reducing, and be provided with positioner, positioner can walk and carry out accurate calibration and location lower bolster, further ensure the machining accuracy of automobile engine plunger, thereby made the yield rate of automobile engine plunger can reach 100%.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is that master of the present invention looks schematic diagram;
Fig. 3 is the operation principle schematic diagram of discharging device;
Fig. 4 is the structural representation behind lower bolster location;
Fig. 5 is the structural representation of automobile engine plunger;
Fig. 6 is that the machine after punching adds blahk structure schematic diagram;
Fig. 7 is that machine adds the structural representation after blank reducing for the first time;
Fig. 8 is that machine adds the structural representation after blank reducing for the second time;
Fig. 9 is that machine adds the structural representation after blank reducing for the third time;
Figure 10 is that machine adds the structural representation after the 4th reducing of blank;
Figure 11 is that machine adds the structural representation after the 5th reducing of blank;
Figure 12 is that machine adds the structural representation after the 6th reducing of blank;
In figure, 1-cope match-plate pattern, 2-die shank, 3-fairlead, 4-punch, 5-lower bolster, 6-gripper shoe, 7-location bearing, 8-die, 9-holder, the left positioning cylinder of 10-, 11-guide rail A, 12-positioning cover plate, the left backstay of 13-, the right positioning cylinder of 14-, 15-guide rail B, 16-guide pad B, 17-mounting blocks, the right backstay of 18-, 19-down-pressed pole, 20-lever, 21-back-moving spring, 22-ejector beam, 23-hinged block, 24-jointed shaft, 25-drives cylinder, 26-guide pad A, 27-guide rail C, 28-drive rod, 29-guide post, 30-air cylinder fixed plate A, 31-air cylinder fixed plate B, 32-thimble mould.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described, and protection scope of the present invention is not limited to the following stated:
As depicted in figs. 1 and 2, a kind of automobile engine plunger reducing chamfering device and machining process for plunger thereof, it comprises upper bolster, die shoe, positioner, discharging device and drive unit;
Further, described upper bolster is made up of cope match-plate pattern 1, die shank 2 and punch 4, and described die shank 2 is arranged on cope match-plate pattern 1 top, and punch 4 is arranged on the lower surface of cope match-plate pattern 1, on described cope match-plate pattern 1, is also provided with fairlead 3;
Further, described die shoe is made up of lower bolster 5, gripper shoe 6, location bearing 7, rotating shaft, swivel bearing, holder 9 and die 8, described location bearing 7 is multiple and is arranged between lower bolster 5 and gripper shoe 6 by connecting axle, described gripper shoe 6 is sleeved on swivel bearing, swivel bearing is sleeved on rotating shaft, described rotating shaft is arranged on holder 9, described die 8 is arranged on cope match-plate pattern 1 and is positioned at corresponding punch 4 belows, guide post 29 is installed on lower bolster 5, and guide post 29 is slidably matched with fairlead 3;
Further, described positioner comprises left positioner and right positioner, described left positioner comprises left positioning cylinder 10, guide rail A11, positioning cover plate 12, air cylinder fixed plate A30 and left backstay 13, described left positioning cylinder 10 and guide rail A11 are installed on air cylinder fixed plate A30, described positioning cover plate 12 is connected with left positioning cylinder 10 and positioning cover plate 12 is slidably installed on guide rail A11, one end of described left backstay 13 is fixedly mounted on positioning cover plate 12, and the other end of left backstay 13 inserts in the gap between adjacent two location bearings 7,
Further, described right positioner comprises right positioning cylinder 14, guide rail B15, guide pad B16, mounting blocks 17, right backstay 18 and air cylinder fixed plate B31, described guide rail B15 and right positioning cylinder 14 are arranged on air cylinder fixed plate B31, described guide pad B16 is fixedly mounted in mounting blocks 17, and on the guide rail B15 that the two ends of guide pad B16 are slidably installed corresponding, the piston rod of described right positioning cylinder 14 is connected with mounting blocks 17, and one end of right backstay 18 is fixedly mounted on mounting blocks 17, the other end of described right backstay 18 inserts in the gap between adjacent two location bearings 7,
Further, as shown in Figure 3, described discharging device comprises down-pressed pole 19, lever 20, back-moving spring 21, ejector beam 22, hinged block 23 and jointed shaft 24, described lever 20 is hinged in gripper shoe 6 by hinged block 23 and jointed shaft 24, described back-moving spring 21 one end are connected with the lower surface of gripper shoe 6, the other end is connected with the upper surface of lever 20, the upper end of described ejector beam 22 is slidably fitted in die 8, the lower end of ejector beam 22 contacts with the termination of lever 20, described down-pressed pole 19 is arranged on cope match-plate pattern 1, and be positioned at a lever 20 directly over;
Further, described drive unit comprises driving cylinder 25, guide pad A26, guide rail C27 and drive rod 28, described driving cylinder 25 and guide rail C27 are arranged on air cylinder fixed plate B31, described guide pad A26 is slidably fitted on guide rail C27, and guide pad A26 is connected with driving cylinder 25, one end of described drive rod 28 is arranged on guide pad A26, the other end of drive rod 28 is positioned at a side of location bearing 7, in the time driving cylinder 25 to work, the piston rod of left positioning cylinder 10 and right positioning cylinder 14 shrinks, lower bolster 5 can be rotated around rotating shaft, now drive the piston rod of cylinder 25 to stretch out forward, guide pad A26 moves along guide rail C27, ensure the linearity of guide pad A26 motion, now the front end of drive rod 28 promotes location bearing 7, thereby lower bolster 5 and gripper shoe 6 are rotated counterclockwise, when lower bolster 5 and support plate 6 rotate a station, the angle of rotating is 360 °/N, N is the number of die, then drive cylinder 25 to quit work, the piston rod of left positioning cylinder 10 and right positioning cylinder 14 stretches out, positioning cover plate 12 moves along guide rail A, thereby ensure the linearity that left backstay 13 moves, guide pad B16 moves along guide rail B15, ensure the linearity that right backstay 18 moves, therefore when left backstay 13, the wedge structure of right backstay 18 enters behind bearing clearance, if lower bolster 5 exists after bit error, one side of wedge structure is by the lateral wall contact prior to bearing, thereby promoting lower bolster 5 rotates, after the both sides of wedge structure all contact with corresponding bearing, thereby lower bolster 5 is stopped operating and fix, ensure the precision that walks of lower bolster 5, thereby improve the precision of plunger condensation and rounding.
Further, described punch 4 and die 8 are multiple, and corresponding one by one, in die 8, be provided with the thimble mould 32 of a plunger rounding, described punch 4 is evenly arranged on the same circumference of cope match-plate pattern 1 lower surface, and described die 8 is evenly arranged on the same circumference of lower bolster 5 upper surfaces, in the present embodiment, punch 4 and die 8 are at least six, and the number of preferred die 4 and die 8 is even number, as 12 of six of punch, eight of punch, ten of punch and punch.
Further, as shown in Figure 4, described left backstay 13, the end of right backstay 18 and drive rod 28 is provided with a wedge structure, this wedge structure is positioned at the gap of two adjacent location bearings 7, and the dual-side of wedge structure contacts with the outer ring of corresponding location bearing 7 respectively, the quantity of location bearing 7 is the twice of die 8 quantity, every adjacent two location bearings 7 are one group, and the vertical line of the axial connecting line of two location bearings 7 is through the axial line of corresponding die 8, further, described discharging device is identical with die 8 numbers, and be evenly distributed on the same circumference of gripper shoe 6, when left backstay 13 and right backstay 18 are all positioned at behind bearing clearance, left backstay 13 and right backstay 1 are on same axis, and cross the axial line of lower bolster 5, thereby after left backstay 13 and right backstay 18 are all had good positioning, can prevent that lower bolster 5 from rotating, thereby ensure the accurate cooperation of punch 4 and die 8, improve the precision of plunger reducing and rounding.
The course of work of the present invention is as follows: machine is added to blank and be placed on die 8, this die 8 is the corresponding die 8 of down-pressed pole 19 first die with counter clockwise direction number, then cope match-plate pattern 1 is descending under the effect of punch press, complete the processing of A1 station, complete the processing of plunger rounding and preliminary reducing, then inching button, controller control drives cylinder 25, left positioning cylinder 10, right positioning cylinder 10 links, realize the angle that lower bolster rotates 360 °/N, and locate by left backstay 13 and right backstay 18, and then machine is added to blank be placed in above-mentioned die 8, then cope match-plate pattern is descending, by that analogy, when machine adds blank after the N time punching, in the time of N station, down-pressed pole 19 is descending, activation lever 20 and ejector beam 22 link, thereby made plunger is taken out, and then at next station, machine is added to blank and put into this die 8, then do repeating motion, complete reducing and the rounding of plunger in batches.
A machining process for plunger for automobile engine plunger reducing chamfering device, it comprises the following steps:
S1: anneal of material, raw material are carried out at the temperature of 770 ~ 778 DEG C to spheroidizing processing, the hardness after annealing reaches 68 ~ 75HRB, and metallographic structure reaches 5 ~ 6 grades;
S2: wire drawing, the material in S1 is carried out to wire drawing, after wire drawing, the tolerance of material diameter is in 0.02mm;
S3: cold pier molded blank: by the wire rod after S2 wire drawing, carry out successively blank, integer on Cold header, finally form cold pier blank;
S4: rough annealing: the cold pier blank in S3 is carried out to stress annealing in 645 ~ 655 DEG C, and the hardness after annealing reaches 46 ~ 50HRA;
S5: machine adds for the first time, carries out machined by the cold pier blank after annealing in S4, and preliminary dimension is wanted in processing, and formation machine adds blank;
S6: rush pre-hole, the machine in S5 is added to blank and carry out punching, make to form a pre-hole on the platform of interval in blank, as shown in Figure 6;
S7: reducing and rounding, the machine that S6 is processed adds blank and puts into die, then passes through punch reducing and rounding, obtains reducing blank;
S8: machine adds for the second time, carries out machined to the reducing blank of S7, and processing preliminary dimension obtain finished product.
In the present embodiment, in described S7 step, as shown in Fig. 7 ~ Figure 12, machine adds blank at least through six reducings, and when reducing for the first time, machine adds blank and just under the effect of thimble mould 32, forms rounding, further, thimble mould 32 in described S5 is in follow-up reducing process, thimble mould 32 is all positioned at die 8, thereby make punching each time, thimble mould 32 all coordinates with rounding, thereby ensure that rounding can not be out of shape in follow-up punch process, ensure the machining accuracy of rounding, also avoided rounding to be out of shape the reducing problem on deformation of bringing simultaneously, thereby ensure the machining accuracy of reducing.
Claims (7)
1. an automobile engine plunger reducing chamfering device, is characterized in that: it comprises upper bolster, die shoe, positioner, discharging device and drive unit;
Described upper bolster is made up of cope match-plate pattern (1), die shank (2) and punch (4), described die shank (2) is arranged on cope match-plate pattern (1) top, punch (4) is arranged on the lower surface of cope match-plate pattern (1), on described cope match-plate pattern (1), is also provided with fairlead (3);
Described die shoe is by lower bolster (5), gripper shoe (6), location bearing (7), rotating shaft, swivel bearing, holder (9) and die (8) composition, described location bearing (7) is multiple and is arranged between lower bolster (5) and gripper shoe (6) by connecting axle, described gripper shoe (6) is sleeved on swivel bearing, swivel bearing is sleeved on rotating shaft, described rotating shaft is arranged on holder (9), described die (8) is arranged on cope match-plate pattern (1) above and is positioned at corresponding punch (4) below, guide post (29) is installed on lower bolster (5), guide post (29) is slidably matched with fairlead (3),
Described positioner comprises left positioner and right positioner, described left positioner comprises left positioning cylinder (10), guide rail A(11), positioning cover plate (12), air cylinder fixed plate A(30) and left backstay (13), described left positioning cylinder (10) and guide rail A(11) be installed in air cylinder fixed plate A(30) on, described positioning cover plate (12) is connected with left positioning cylinder (10) and positioning cover plate (12) is slidably installed at guide rail A(11) on, one end of described left backstay (13) is fixedly mounted on positioning cover plate (12), and the other end of left backstay (13) inserts in the gap between adjacent two location bearings (7),
Described right positioner comprises right positioning cylinder (14), guide rail B(15), guide pad B(16), mounting blocks (17), right backstay (18) and air cylinder fixed plate B(31), described guide rail B(15) and right positioning cylinder (14) be arranged on air cylinder fixed plate B(31) on, described guide pad B(16) be fixedly mounted in mounting blocks (17), and guide pad B(16) two ends be slidably installed guide rail B(15 corresponding) on, the piston rod of described right positioning cylinder (14) is connected with mounting blocks (17), and one end of right backstay (18) is fixedly mounted on mounting blocks (17), the other end of described right backstay (18) inserts in the gap between adjacent two location bearings (7),
Described discharging device comprises down-pressed pole (19), lever (20), back-moving spring (21), ejector beam (22), hinged block (23) and jointed shaft (24), described lever (20) is hinged in gripper shoe (6) by hinged block (23) and jointed shaft (24), described back-moving spring (21) one end is connected with the lower surface of gripper shoe (6), the other end is connected with the upper surface of lever (20), the upper end of described ejector beam (22) is slidably fitted in die (8), the lower end of ejector beam (22) contacts with the termination of lever (20), described down-pressed pole (19) is arranged on cope match-plate pattern (1), and be positioned at a lever (20) directly over,
Described drive unit comprises driving cylinder (25), guide pad A(26), guide rail C(27) and drive rod (28), described driving cylinder (25) and guide rail C(27) be arranged on air cylinder fixed plate B(31) on, described guide pad A(26) be slidably fitted in guide rail C(27) on, and guide pad A(26) be connected with driving cylinder (25), one end of described drive rod (28) is arranged on guide pad A(26) upper, the other end of drive rod (28) is positioned at a side of location bearing (7).
2. a kind of automobile engine plunger reducing chamfering device according to claim 1, it is characterized in that: described punch (4) and die (8) are multiple, and corresponding one by one, in die (8), be provided with the thimble mould (32) of a plunger rounding, described punch (4) is evenly arranged on the same circumference of cope match-plate pattern (1) lower surface, and described die (8) is evenly arranged on the same circumference of lower bolster (5) upper surface.
3. a kind of automobile engine plunger reducing chamfering device according to claim 2, is characterized in that: described discharging device is identical with die (8) number, and is evenly distributed on the same circumference of gripper shoe (6).
4. a kind of automobile engine plunger reducing chamfering device according to claim 3, it is characterized in that: the end of described left backstay (13), right backstay (18) and drive rod (28) is provided with a wedge structure, this wedge structure is positioned at the gap of two adjacent location bearings (7), and the dual-side of wedge structure contacts with the outer ring of corresponding location bearing (7) respectively.
5. the machining process for plunger of a kind of automobile engine plunger reducing chamfering device based on described in claim 1 ~ 4 any one, is characterized in that: it comprises the following steps:
S1: anneal of material, raw material are carried out at the temperature of 770 ~ 778 DEG C to spheroidizing processing, the hardness after annealing reaches 68 ~ 75HRB, and metallographic structure reaches 5 ~ 6 grades;
S2: wire drawing, the material in S1 is carried out to wire drawing, after wire drawing, the tolerance of material diameter is in 0.02mm;
S3: cold pier molded blank: by the wire rod after S2 wire drawing, carry out successively blank, integer on Cold header, finally form cold pier blank;
S4: rough annealing: the cold pier blank in S3 is carried out to stress annealing in 645 ~ 655 DEG C, and the hardness after annealing reaches 46 ~ 50HRA;
S5: machine adds for the first time, carries out machined by the cold pier blank after annealing in S4, and preliminary dimension is wanted in processing, and formation machine adds blank;
S6: rush pre-hole, the machine in S5 is added to blank and carry out punching, make to form on the platform of interval in blank a pre-hole;
S7: reducing and rounding, the machine that S6 is processed adds blank and puts into die, then passes through punch reducing and rounding, obtains reducing blank;
S8: machine adds for the second time, carries out machined to the reducing blank of S7, and processing preliminary dimension obtain finished product.
6. the machining process for plunger of a kind of automobile engine plunger reducing chamfering device according to claim 5, it is characterized in that: in described S7 step, machine adds blank at least through six reducings, and when reducing for the first time, machine adds blank and just under the effect of thimble mould (32), forms rounding.
7. the machining process for plunger of a kind of automobile engine plunger reducing chamfering device according to claim 6, is characterized in that: the thimble mould (32) in described S5 is in follow-up reducing process, and thimble mould (32) is all positioned at die 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610155570.7A CN105598295B (en) | 2016-03-18 | 2016-03-18 | A kind of automobile engine plunger necking chamfering device and its machining process for plunger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610155570.7A CN105598295B (en) | 2016-03-18 | 2016-03-18 | A kind of automobile engine plunger necking chamfering device and its machining process for plunger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105598295A true CN105598295A (en) | 2016-05-25 |
| CN105598295B CN105598295B (en) | 2017-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610155570.7A Active CN105598295B (en) | 2016-03-18 | 2016-03-18 | A kind of automobile engine plunger necking chamfering device and its machining process for plunger |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN111622858A (en) * | 2019-02-28 | 2020-09-04 | 强莉莉 | Reducing steel piston and reducing steel piston forming device and forming method |
| CN116329969A (en) * | 2023-04-23 | 2023-06-27 | 苏州众捷汽车零部件股份有限公司 | Aluminum pipe pier head machine with cutting function |
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| CN2925679Y (en) * | 2006-06-26 | 2007-07-25 | 曾世义 | Automatic multi-station rotary-disk forming machine of split pipe |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107931460A (en) * | 2017-11-14 | 2018-04-20 | 山东同创汽车散热装置股份有限公司 | One kind expansion positioner and squeeze riveter |
| CN107931460B (en) * | 2017-11-14 | 2024-01-23 | 山东同创汽车散热装置股份有限公司 | Expansion positioning device and squeeze riveter |
| CN111622858A (en) * | 2019-02-28 | 2020-09-04 | 强莉莉 | Reducing steel piston and reducing steel piston forming device and forming method |
| CN116329969A (en) * | 2023-04-23 | 2023-06-27 | 苏州众捷汽车零部件股份有限公司 | Aluminum pipe pier head machine with cutting function |
| CN116329969B (en) * | 2023-04-23 | 2023-10-31 | 苏州众捷汽车零部件股份有限公司 | Aluminum pipe pier head machine with cutting function |
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