CN108296725A - Split type differential casing internal expanding processing method - Google Patents
Split type differential casing internal expanding processing method Download PDFInfo
- Publication number
- CN108296725A CN108296725A CN201810337661.1A CN201810337661A CN108296725A CN 108296725 A CN108296725 A CN 108296725A CN 201810337661 A CN201810337661 A CN 201810337661A CN 108296725 A CN108296725 A CN 108296725A
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- China
- Prior art keywords
- split type
- differential casing
- type differential
- spring pocket
- card
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/40—Expansion mandrels
- B23B31/404—Gripping the work or tool by jaws moving radially controlled by conical surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
- B23Q11/1038—Arrangements for cooling or lubricating tools or work using cutting liquids with special characteristics, e.g. flow rate, quality
- B23Q11/1053—Arrangements for cooling or lubricating tools or work using cutting liquids with special characteristics, e.g. flow rate, quality using the cutting liquid at specially selected temperatures
Abstract
The present invention relates to a kind of differential casing processing methods, more particularly, to a kind of split type differential casing internal expanding processing method.It mainly solves the processing differential casing present in the prior art and operates less simplicity in clamping, positioning is more inaccurate, and workpiece is easy to shake in processing, so that machining accuracy is poor, the concentricity of Internal Spherical Surface is also poor, the more low technical problem of processing efficiency.The method of the present invention includes：The inner end of split type differential casing blank is inserted into the locating piece of internal expansion type positioning fixture and is fixed；Feeding bearing installation position cutter cuts split type differential casing, to make split type differential casing bearings at both ends installation position outer circle while shape；Feeding molding cutter again cuts split type differential casing, and the internal gear to process split type differential casing installs spherical cambered surface；Processing is can be completed into split type differential casing finished product abjection locating piece.
Description
Technical field
The present invention relates to a kind of differential casing processing methods, add more particularly, to a kind of split type differential casing internal expanding
Work method.
Background technology
The characteristics of car differential shell is an important parts in car drive system, the product be, axis
It is high to hole and inner cavity spherical surface required precision, and because product structure limits at spherical surface, difficulty of processing is big.Chinese patent discloses
A kind of grinding system and method for differential casing blank（Publication number：CN106078439A）, step is：A, it is closed in bottom plate
Material storing box in be equipped with differential casing to be processed, material storing box is lifted into bucket shape storehouse, differential casing is from material storing box
It rolls down in bucket shape storehouse, vibrator work makes most left first differential casing be rolled in stock chest to the left；B, drive disc mechanism
Work, stirs differential casing and moves downward and fall on the first clamping mechanism, and the first clamping mechanism clamps differential casing,
The piston rod of slide unit cylinder pushes the first clamping mechanism to the left, and the large end face of differential casing and small end face is made to reach face grinding machine
Place, while being ground large end face and small end face；C, the first clamping mechanism is continued to press on to the left, shear-type elevator action makes differential mechanism
Shell completes clamping by the second clamping mechanism；D, shear-type elevator action makes slide unit and the first clamping mechanism move down, slide unit
Cylinder is shunk to the right, and the first clamping mechanism is driven to slide into extreme position to the right, and shear-type elevator action makes slide unit and the first dress
Clamp mechanism rises to initial position, the next differential casing of clamping；E, rotary table is rotated counterclockwise 90 °, makes first
A differential casing reaches at cylindrical grinder, behind second the second empty clamping mechanism close to slide unit, cylindrical grinder is right simultaneously
The big end outer circle and small-end external grinding of first differential casing；F, rotary table is rotated by 90 ° counterclockwise again, first
A differential casing is reached and is ground at shaped face grinding machine, outside the big end outer circle and small end of second differential casing of cylindrical grinder pair
Circle grinding, behind third sky the second clamping mechanism close to slide unit；G, rotary table is rotated by 90 ° counterclockwise for the third time,
First differential casing reaches discharge position discharging, and second differential casing is reached and be ground at shaped face grinding machine, third
Differential casing is reached and is ground at cylindrical grinder, and the 4th the second empty clamping mechanism is close to slide unit.But this processing method
In clamping, operation is less easy, and positioning is more inaccurate, and workpiece is easy to shake in processing, so that machining accuracy is poor,
The concentricity of Internal Spherical Surface is also poor, and processing efficiency is relatively low.
Invention content
The present invention is to provide a kind of split type differential casing internal expanding processing method, mainly solves the prior art and is deposited
Processing differential casing in clamping when operation it is less easy, positioning is more inaccurate, and workpiece is easy to shake in processing, to
So that machining accuracy is poor, the concentricity of Internal Spherical Surface is also poor, the more low technical problem of processing efficiency.
The above-mentioned technical problem of the present invention is mainly to be addressed by following technical proposals：
The split type differential casing internal expanding processing method of the present invention, it is characterised in that the method includes：
A. the inner end of split type differential casing blank is inserted into the locating piece of internal expansion type positioning fixture, in split type differential
Spring pocket is inserted at the endoporus of device shell blank inner end drives pull rod to move backward oil gear driving piston moves backward when,
The spring pocket of tie rod end moves backward along the conical surface of the core of the card, spring pocket spreading, and spring pocket is by split type differential casing base
Material is fixed；
B. bearing installation position cutter is installed, so that main shaft is rotated using the main driving device of numerically-controlled machine tool, feeding bearing installation position knife
Tool split type differential casing is cut, to make split type differential casing bearings at both ends installation position outer circle simultaneously at
Shape；
C. by bearing installation position cutter changing at molding cutter, so that main shaft is rotated using the main driving device of numerically-controlled machine tool, feeding at
Type cutter again cuts split type differential casing, to process the internal gear mounting ball of split type differential casing
Cambered surface；
D. molding cutter exits split type differential casing, and oil gear drives piston advances forward, and pull rod is driven to travel forward,
Spring pocket leaves the core of the card, and spring pocket will collapse, and processing can be completed in split type differential casing finished product abjection locating piece.
The present invention compared with the fixed clamping of former Internal hole positioning, its advantage is that：It is simple and compact for structure, operation flexibly, positioning
Accurately.Entire split type differential casing is fixed using oil gear driving spring set, is carrying out machining in this way
When, split type differential casing will not be shaken, and entire fixture is also smaller to the abrasion of split type differential casing.By
To the more demanding of alignment when split type differential casing is in processing, thus it is sliding using the axial direction between spring pocket and the core of the card
It moves, split type differential casing is fixedly more close in the axial direction, and in processing, precision is higher in this way.
Preferably, the internal expansion type positioning fixture includes organic frame, rack is equipped with oil gear, and rack front end is set
There are valve body and valve deck, piston is equipped in the valve chamber of valve body, oil gear is connected to valve chamber, and piston is connected with pull rod, and pull rod, which is worn, to be connected on
In the core of the card, the core of the card one end is fixed on valve deck, and the outer surface of the other end is equipped with male cone (strobilus masculinus), and the front end of pull rod is connected with spring pocket,
The inner surface of spring pocket is equipped with the inner conical surface being adapted with male cone (strobilus masculinus), and locating piece is equipped with outside spring pocket.The both ends of spring pocket are
Interior cone mouth, matched, one end has an outer frustum made on the core of the card, the other end have one be set on the core of the card can be along the core of the card
The outer tapered end of the piston axially slid is done, the working chamber and hydraulic power source for being located at piston side are connected.Spring pocket has certain elasticity,
When spring pocket is moved backward along the male cone (strobilus masculinus) of the core of the card, the outer diameter of spring pocket will swell, to by split type differential casing
It tensioner and is located on locating piece.
Preferably, being equipped with guide pad between the locating piece and the core of the card, the front end of guide pad is equipped with guide groove, spring
The rear end of set is equipped with the guide pad that can be extend into guide groove.Guide pad can be moved along guide groove, can be limited in this way
The position of guide pad movement processed.
Preferably, being equipped with oil pressure distribution plate in the valve body, it is equipped with distribution oil duct in oil pressure distribution plate, is set on valve body
There are oil return oil duct connection distribution oil duct, oil pressure distribution plate to be equipped with guide post, the pilot hole of pluggable guide post is provided on piston.
Preferably, one end of the valve deck, which is equipped with, can accommodate the cavity of piston, piston generally T fonts, valve deck
The other end is equipped with the convex block that can be inserted into the core of the card, and is also provided with the annular groove that can be embedded in the core of the card on the valve deck end face around convex block.Valve
Lid can not only play the role of the entire valve body of sealing, moreover it is possible to position multiple components such as piston, the core of the card, can ensure structure in this way
Compactedness.
Preferably, being provided with a plurality of angularly disposed tensioner slot on the inner conical surface of the spring pocket, it is equipped in tensioner slot
Bolster, when generating displacement between spring pocket and the core of the card, bolster is extended between spring pocket and the core of the card.Using bolster, this
When sample can make spring pocket generate mobile relative to the core of the card, a part of bolster can release and be located at because of the reason of squeezing
Between spring pocket and the core of the card, the effect of tensioner can be further functioned as in this way.
Preferably, described cuts split type differential casing using bearing installation position cutter and molding cutter
When cutting, it is passed through cooling water pipe in split type differential carrier body and carries out water-spraying control, cooling water pipe is internally provided with helicla flute, cold
But the end of water pipe is equipped with nozzle, and the side of nozzle, which is equipped with, surveys spray port, and side spray port is taper, is provided on the end face of nozzle flat
Shape spray port is equipped with several fins at flat spray port.Using the helicla flute of cooling water pipe, flow velocity can be accelerated.Survey spray port
It is set as taper so that more rapid when injection.Part cooling water can be sprayed onto connecing for the core of the card and spring pocket by flat spray port
Synapsis can utilize water to increase suction, to increase the binding force between spring pocket and split type differential casing in this way.
Preferably, described cutting bowlder outside split type differential casing bearings at both ends installation position, what nozzle sprayed
The temperature of cooling water is 5-8 DEG C, and when cutting split type differential casing internal gear installation spherical cambered surface, the temperature of cooling water is 2-
4℃.The temperature of cooling water is divided into two-part, the cooling water with lower temperature when cutting larger area so that cooling effect compared with
It is good.
Preferably, the end face of the locating piece is equipped with mounting groove, it is equipped in mounting groove and can contact split type differential
The pressure sensor of device shell, pressure sensor connect oil gear by cnc mechanism.It can be at any time using pressure sensor
The pressure that locating piece affords when monitoring tensioner adjusts to be compared with preset pressure value finally by oil gear
The action of spring block.
Therefore, processing differential casing of the invention operates more flexible, clamp structure simple and compact in clamping, positioning
More accurate, workpiece is not easy to shake in processing, so that machining accuracy is higher, the concentricity of Internal Spherical Surface is also preferable, adds
Work efficiency rate is higher, and 1-2 grades of the coaxial accuracy of Internal Spherical Surface is improved while increasing yield.
Description of the drawings
Attached drawing 1 is a kind of structural schematic diagram of internal expansion type positioning fixture of the present invention；
Attached drawing 2 is a kind of structural schematic diagram of tensioner slot of the present invention；
Attached drawing 3 is a kind of structural schematic diagram of cooling water pipe and nozzle of the present invention；
Attached drawing 4 is a kind of structural schematic diagram of flat spray port of the present invention.
Parts, position and number in figure：Rack 1, oil gear 2, valve body 3, valve deck 4, piston 5, pull rod 6, the core of the card 7,
Spring pocket 8, inner conical surface 9, locating piece 10, guide pad 11, guide groove 12, guide pad 13, oil pressure distribution plate 14, distribution oil duct 15,
Oil return oil duct 16, guide post 17, pilot hole 18, cavity 19, convex block 20, tensioner slot 21, bolster 22,23 helicla flute of cooling water pipe
24, nozzle 25, survey spray port 26, flat spray port 27, fin 28, mounting groove 29, pressure sensor 30, split type differential carrier
Body 31.
Specific implementation mode
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment：The split type differential casing internal expanding processing method of this example, step are：
A. the inner end of 31 blank of split type differential casing is inserted into the locating piece of internal expansion type positioning fixture, in split type difference
Spring pocket is inserted at the endoporus of fast device shell blank inner end drives pull rod to transport backward oil gear driving piston moves backward when
Dynamic, the spring pocket of tie rod end moves backward along the conical surface of the core of the card, spring pocket spreading, and spring pocket is by split type differential casing
Blank is fixed；
Such as Fig. 1, internal expansion type positioning fixture includes organic frame 1, and rack is equipped with oil gear 2, and rack front end is equipped with valve body 3 and valve
Lid 4, the valve chamber of valve body is interior to be equipped with piston 5, and oil gear is connected to valve chamber, and piston is connected with pull rod 6, and pull rod, which is worn, to be connected in the core of the card 7,
The core of the card one end is fixed on valve deck, and the outer surface of the other end is equipped with male cone (strobilus masculinus), and the front end of pull rod is connected with spring pocket 8, spring pocket
Inner surface be equipped with the inner conical surface 9 being adapted with male cone (strobilus masculinus), locating piece 10 is equipped with outside spring pocket.Such as Fig. 2, the inner cone of spring pocket
It is provided with a plurality of angularly disposed tensioner slot 21 on face, is equipped with bolster 22 in tensioner slot, displacement is generated between spring pocket and the core of the card 7
When, bolster is extended between spring pocket and the core of the card.The end face of locating piece 10 is equipped with mounting groove 29, and being equipped in mounting groove can connect
The pressure sensor 30 of split type differential casing is touched, pressure sensor connects oil gear 2 by cnc mechanism.Locating piece 10
Guide pad 11 is equipped between the core of the card, the front end of guide pad is equipped with guide groove 12, and the rear end of spring pocket 8, which is equipped with, can extend into guiding
Guide pad 13 in slot.It is equipped with oil pressure distribution plate 14 in valve body, distribution oil duct 15 is equipped in oil pressure distribution plate, valve body is equipped with back
The connection distribution oil duct of oil duct 16, oil pressure distribution plate are equipped with guide post 17, the pilot hole of pluggable guide post are provided on piston
18.One end of valve deck is equipped with the cavity 19 that can accommodate piston 5, and piston generally T fonts, the other end of valve deck, which is equipped with, can be inserted into card
The convex block 20 of core 7, and also it is provided with the annular groove that can be embedded in the core of the card on the valve deck end face around convex block.
B. bearing installation position cutter is installed, so that main shaft is rotated using the main driving device of numerically-controlled machine tool, feeding bearing installation
Position cutter cuts split type differential casing, to make split type differential casing bearings at both ends installation position outer circle simultaneously
Forming；
C. by bearing installation position cutter changing at molding cutter, so that main shaft is rotated using the main driving device of numerically-controlled machine tool, feeding at
Type cutter again cuts split type differential casing, to process the internal gear mounting ball of split type differential casing
Cambered surface；
When being cut split type differential casing using bearing installation position cutter and molding cutter, in split type differential mechanism
It is passed through cooling water pipe 23 in shell and carries out water-spraying control, such as Fig. 3, cooling water pipe is internally provided with helicla flute 24, cooling water pipe
End is equipped with nozzle 25, and the side of nozzle, which is equipped with, surveys spray port 26, and side spray port is taper, and flat spray is provided on the end face of nozzle
Mouth 27 is drenched, such as Fig. 4, several fins 28 are equipped at flat spray port.
Bowlder outside split type differential casing bearings at both ends installation position is being cut, the temperature for the cooling water that nozzle 25 sprays is
8 DEG C, when cutting split type differential casing internal gear installation spherical cambered surface, the temperature of cooling water is 3 DEG C.
D. molding cutter exits split type differential casing, and oil gear drives piston advances forward, drives pull rod forward
Movement, spring pocket leave the core of the card, and spring pocket will collapse, and split type differential casing finished product abjection locating piece can be completed and add
Work.
Above is only a specific embodiment of the present invention, but the structure feature of the present invention is not limited thereto, Ren Heben
The technical staff in field in the field of the invention, made by changes or modifications all cover the present invention the scope of the claims among.
Claims (9)
1. a kind of split type differential casing internal expanding processing method, it is characterised in that the method includes：
A. the inner end of split type differential casing blank is inserted into the locating piece of internal expansion type positioning fixture, in split type differential
Spring pocket is inserted at the endoporus of device shell blank inner end drives pull rod to move backward oil gear driving piston moves backward when,
The spring pocket of tie rod end moves backward along the conical surface of the core of the card, spring pocket spreading, and spring pocket is by split type differential casing base
Material is fixed；
B. bearing installation position cutter is installed, so that main shaft is rotated using the main driving device of numerically-controlled machine tool, feeding bearing installation position knife
Tool split type differential casing is cut, to make split type differential casing bearings at both ends installation position outer circle simultaneously at
Shape；
C. by bearing installation position cutter changing at molding cutter, so that main shaft is rotated using the main driving device of numerically-controlled machine tool, feeding at
Type cutter again cuts split type differential casing, to process the internal gear mounting ball of split type differential casing
Cambered surface；
D. molding cutter exits split type differential casing, and oil gear drives piston advances forward, and pull rod is driven to travel forward,
Spring pocket leaves the core of the card, and spring pocket will collapse, and processing can be completed in split type differential casing finished product abjection locating piece.
2. split type differential casing internal expanding processing method according to claim 1, it is characterised in that the internal expansion type
Positioning fixture includes organic frame（1）, rack is equipped with oil gear（2）, rack front end is equipped with valve body（3）With valve deck（4）, valve body
Valve chamber in be equipped with piston（5）, oil gear is connected to valve chamber, and piston is connected with pull rod（6）, pull rod, which is worn, is connected on the core of the card（7）It is interior, card
Core one end is fixed on valve deck, and the outer surface of the other end is equipped with male cone (strobilus masculinus), and the front end of pull rod is connected with spring pocket（8）, spring pocket
Inner surface be equipped with male cone (strobilus masculinus) be adapted inner conical surface（9）, spring pocket outside is equipped with locating piece（10）.
3. split type differential casing internal expanding processing method according to claim 2, it is characterised in that the locating piece
（10）With the core of the card（7）Between be equipped with guide pad（11）, the front end of guide pad is equipped with guide groove（12）, spring pocket（8）Rear end set
There is the guide pad that can be extend into guide groove（13）.
4. split type differential casing internal expanding processing method according to claim 2 or 3, it is characterised in that the valve body
（3）It is interior to be equipped with oil pressure distribution plate（14）, oil pressure distribution plate is interior to be equipped with distribution oil duct（15）, valve body is equipped with oil return oil duct（16）Even
Oil duct is matched in the reduction of fractions to a common denominator, and oil pressure distribution plate is equipped with guide post（17）, the pilot hole of pluggable guide post is provided on piston（18）.
5. split type differential casing internal expanding processing method according to claim 2 or 3, it is characterised in that the valve deck
（4）One end be equipped with can accommodate piston（5）Cavity（19）, piston generally T fonts, the other end of valve deck, which is equipped with, can be inserted into card
Core（7）Convex block（20）, and also it is provided with the annular groove that can be embedded in the core of the card on the valve deck end face around convex block.
6. split type differential casing internal expanding processing method according to claim 2 or 3, it is characterised in that the spring
Set（8）Inner conical surface on be provided with a plurality of angularly disposed tensioner slot（21）, tensioner slot is interior to be equipped with bolster（22）, spring pocket with card
Core（7）Between generate displacement when, bolster is extended between spring pocket and the core of the card.
7. split type differential casing internal expanding processing method according to claim 1, it is characterised in that described utilizes axis
When holding installation position cutter and molding cutter and cutting split type differential casing, it is passed through in split type differential carrier body
Cooling water pipe（23）Water-spraying control is carried out, cooling water pipe is internally provided with helicla flute（24）, the end of cooling water pipe is equipped with nozzle
（25）, the side of nozzle, which is equipped with, surveys spray port（26）, side spray port is taper, and flat spray port is provided on the end face of nozzle
（27）, several fins are equipped at flat spray port（28）.
8. split type differential casing internal expanding processing method according to claim 7, it is characterised in that described to cut
Bowlder outside split type differential casing bearings at both ends installation position, nozzle（25）The temperature of the cooling water of ejection is 5-8 DEG C, is being cut
When split type differential casing internal gear installation spherical cambered surface, the temperature of cooling water is 2-4 DEG C.
9. split type differential casing internal expanding processing method according to claim 2 or 3, it is characterised in that the positioning
Block（10）End face be equipped with mounting groove（29）, mounting groove is interior to be equipped with the pressure sensor that can contact split type differential casing
（30）, pressure sensor connects oil gear by cnc mechanism（2）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810337661.1A CN108296725B (en) | 2018-04-16 | 2018-04-16 | Split type differential mechanism shell inner expansion processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810337661.1A CN108296725B (en) | 2018-04-16 | 2018-04-16 | Split type differential mechanism shell inner expansion processing method |
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| CN108296725A true CN108296725A (en) | 2018-07-20 |
| CN108296725B CN108296725B (en) | 2020-04-28 |
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ID=62847486
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111451832A (en) * | 2020-03-30 | 2020-07-28 | 宁波伟立机器人科技股份有限公司 | Stock bin structure of flexible stock bin |
| CN116352155A (en) * | 2023-05-19 | 2023-06-30 | 无锡克瑞斯特科技有限公司 | Milling cutter for machining spherical surface of differential housing and milling machine comprising milling cutter |
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| CN116352155B (en) * | 2023-05-19 | 2023-11-28 | 无锡克瑞斯特科技有限公司 | Milling cutter for machining spherical surface of differential housing and milling machine comprising milling cutter |
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