CN106363347A - Manufacturing technology of radial compensation block used for electro-hydraulic pump - Google Patents
Manufacturing technology of radial compensation block used for electro-hydraulic pump Download PDFInfo
- Publication number
- CN106363347A CN106363347A CN201510659655.4A CN201510659655A CN106363347A CN 106363347 A CN106363347 A CN 106363347A CN 201510659655 A CN201510659655 A CN 201510659655A CN 106363347 A CN106363347 A CN 106363347A
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- Prior art keywords
- compensation block
- radial compensation
- temperature
- electro
- hydraulic pump
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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
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
- B23H1/04—Electrodes specially adapted therefor or their manufacture
- B23H1/06—Electrode material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
- B23H1/08—Working media
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
- B23H9/14—Making holes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The invention provides a radial compensation block used for an electro-hydraulic pump and a technology used for manufacturing the radial compensation block. The technology comprises the steps that W2Mo9Cr4 materials are adopted for manufacturing and forged to form a workblank; the workblank is subjected to annealing, quenching and tempering; and the radial compensation block is molded through ultra-precise grinding, linear cutting and the electric discharge machining technology. According to the radial compensation block used for the electro-hydraulic pump and the technology used for manufacturing the radial compensation block, no die casting is needed, the radial compensation block is equal to a radial compensation block molded by hard alloy pieces through die casting in abrasive resistance, and the problems such as inconsistency of the sizes of finished die casting parts are solved; instant high impact can be borne, volume efficiency is high, a large flow can be generated, and the finished product quality is improved; the cost is lowered, the manufacturing cost is 20 yuan per piece of every 100 pieces, and compared to 28 yuan per piece (without the die making cost of over ten thousand yuan) of bought hard alloy die casting parts, the cost is largely lowered; and the parallelism degree of all parts is 0.005mm, the sizes are consistent, durability is achieved, design requirements are met, and the radial compensation block is higher than fully-imported like products in precision.
Description
Technical field
The present invention relates to electro-hydraulic pump technical field, specifically a kind of electro-hydraulic pump radial compensation block manufacturing process.
Background technology
Because of it, electro-hydraulic pump has the characteristics that compact conformation, small volume, light weight, energy transformation ratio height, energy-conservation, noise are low, have broad application prospects and potentiality in fields such as Aeronautics and Astronautics, navigation and military special type vehicles.All the time, using a whole set of import, its core component radial compensation block adopts hard metal tip to cast pressing formation to domestic electro-hydraulic pump, and precision reaches 0.01mm, but purchasing price is very high.Purchase domestic casting pressure radial compensation block, relatively costly, and precision can only achieve 0.03mm it is impossible to ensure that accessory size is overall consistent.
Content of the invention
In order to solve, existing domestic casting pressure radial compensation block precision is high, the expensive problem of imported product, the goal of the invention of the present invention is to provide a kind of electro-hydraulic pump radial compensation block manufacturing process, to realize improving Product Precision and service life, again can effective reduces cost purpose.For achieving the above object, the radial compensation block of the present invention adopts w2mo9cr4 material to make, its main chemical compositions: c:1.10%；Si:0.20%-0.40%；Mn:0.20%-0.40%；Cr:3.75%；Mo:9.50%；V:1.15%；W:1.50%；Co:8.00%；
Its process is:
A () forges annealing, temperature is 860-880 DEG C；
B () stress relief annealing, temperature is 720-760 DEG C；
C () quenches, temperature is 1160-1190 DEG C；
D () is tempered: temperature is 540-560 DEG C, and heat treatment hardness is up to 67-70hrc；
E () adopts superfine grinding, by the upper and lower flat surface grinding of radial compensation block to depth of parallelism 0.005mm；
F () adopts wire cutting, by the overall dimensions of radial compensation block, wire cutting is to technological parameter；
G () adopts spark machined, spring eye is machined to technological parameter；
Type electric spark perforating electrode material: adopt tungsten alloy electrode, electric conductivity, heat conductivity, good processability, corrosion resistance and productivity ratio efficiency high, low cost；
Boring auxiliary tooling: consistent with spring eye pass, hole position；
Liquid medium: for pure water, in spark machined, the effect of liquid medium is to make processed metallic particles exclude from machined position, reduces electrode temperature, makes the course of processing stable, improves the dielectric strength between electrode gap.
The present invention is compared with prior art, it is not required to casting pressure, its wearability and using hard metal tip cast pressing formation radial compensation block wearability suitable, and do not have such problems as that to be pressed into product accessory size inconsistent due to casting, instantaneous HI high impact can be born, volumetric efficiency is high, larger flow can be produced, improve end product quality, reduce cost, cost of manufacture presses every 100 notes, 20 yuan of every cost, with buy hard alloy cast 28 yuan of casting die every compared with (more than wherein Jia ten thousand yuan mold expense) cost substantially reduce, and whole part depth of parallelism 0.005mm, consistent size, durable in use, reach design requirement, precision is higher than the like product of complete import.
Brief description
Fig. 1 is radial compensation block structure sketch of the present invention.
Specific embodiment
As shown in figure 1, the structure diagram for radial compensation block of the present invention.Sequence number 1 is radial compensation block, and sequence number 2 is spring eye.
Radial compensation block of the present invention adopts w2mo9cr4 material manufacture, its main chemical compositions: c:1.10%；Si:0.20%-0.40%；Mn:0.20%-0.40%；Cr:3.75%；Mo:9.50%；V:1.15%；W:1.50%；Co:8.00%；W2mo9cr4 material wear ability is good，Red hardness is high，Bending strength is high，Good combination property，Cost performance is high，This material is widely used in steel、Rustless steel、Titanium alloy、Nickel alloy、The hardness such as hardened steel are high、Viscosity is big、The complicated difficult processing workpiece of chemical analysis,Compared with commonly superhard white steel knife，Wearability is more preferable，Red hardness is higher，Bending strength is higher，Cost performance is higher，It is more than 3 times of commonly superhard white steel knife service life，This radial compensation block is compared with prior art，This radial compensation block is not required to casting pressure (original product is hard alloy die casting moulding)，Its wearability and using hard metal tip cast pressing formation radial compensation block wearability suitable，And be not in due to casting be pressed into product accessory size inconsistent the problems such as，Instantaneous high impact-resistant can be born, and (hard alloy fragility is very high，And it is almost temperature independent.In room temperature, the impact flexibility of hardened steel is more than impact flexibility 1-2 times of hard alloy, and annealed steel is then more than 9 times of hard alloy), improve end product quality, reduce cost.
Its process for making is:
A () forges annealing, temperature is 860-880 DEG C；
B () stress relief annealing, temperature is 720-760 DEG C；
C () quenches, temperature is 1160-1190 DEG C；
D () is tempered: temperature is 540-560 DEG C；Because of vanadium content of the present invention not high (1%), the height of amount containing cobalt (8%), cobalt can promote carbide to be more dissolved in matrix in Quench heating, improve wearability using high matrix hardness.Heat treatment hardness is up to 67-70hrc, but special thermal treatment tempering method taken by this part, and temperature is controlled to 540-560 DEG C so as to cutting ability (particularly intermittent-cutting) is improved, and improves impact flexibility；
E () adopts superfine grinding, by the upper and lower flat surface grinding of radial compensation block 1 to depth of parallelism 0.005mm；
F () adopts wire cutting, by the overall dimensions of radial compensation block 1, technological parameter needed for profile for the wire cutting；
G () adopts spark machined, spring eye 2 is machined to technological parameter；
Type electric spark perforating electrode material: adopt tungsten alloy electrode, electric conductivity, heat conductivity, good processability, corrosion resistance and productivity ratio efficiency high, low cost；
Boring auxiliary tooling: consistent with spring eye pass, hole position；
Liquid medium: for pure water, in spark machined, the effect of liquid medium is to make processed metallic particles exclude from machined position, reduces electrode temperature, makes the course of processing stable, improves the dielectric strength between electrode gap.The requirement to medium for the present invention is that viscosity is little, and price is low.
Claims (1)
1. a kind of electro-hydraulic pump with radial compensation block and its technique it is characterised in that: this radial compensation block adopt w2mo9cr4 material make, its main chemical compositions: c:1.10%；Si:0.20%-0.40%；Mn:0.20%-0.40%；Cr:3.75%；Mo:9.50%；V:1.15%；W:1.50%；Co:8.00%；
Its process is:
(a), forge annealing, temperature is 860-880 DEG C；
B (), stress relief annealing, temperature is 720-760 DEG C；
C (), quenching, temperature is 1160-1190 DEG C；
(d), tempering: temperature is 540-560 DEG C, and heat treatment hardness is up to 67-70hrc；
(e), adopt superfine grinding, by the upper and lower flat surface grinding of radial compensation block to depth of parallelism 0.005mm；
(f), adopt wire cutting, by the overall dimensions of radial compensation block, wire cutting is to technological parameter；
(g), adopt spark machined, spring eye is machined to technological parameter；
Type electric spark perforating electrode material: adopt tungsten alloy electrode, electric conductivity, heat conductivity, good processability, corrosion resistance and productivity ratio efficiency high, low cost；
Boring auxiliary tooling: consistent with spring eye pass, hole position；
Liquid medium: for pure water, in spark machined, the effect of liquid medium is to make processed metallic particles exclude from machined position, reduces electrode temperature, makes the course of processing stable, improves the dielectric strength between electrode gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510659655.4A CN106363347B (en) | 2015-10-14 | 2015-10-14 | A kind of electro-hydraulic pump radial compensation block manufacturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510659655.4A CN106363347B (en) | 2015-10-14 | 2015-10-14 | A kind of electro-hydraulic pump radial compensation block manufacturing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106363347A true CN106363347A (en) | 2017-02-01 |
| CN106363347B CN106363347B (en) | 2018-01-30 |
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| CN201510659655.4A Active CN106363347B (en) | 2015-10-14 | 2015-10-14 | A kind of electro-hydraulic pump radial compensation block manufacturing process |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07301191A (en) * | 1994-05-02 | 1995-11-14 | Mitsubishi Heavy Ind Ltd | Constant delivery type electro-hydraulic pump |
| CN101029369A (en) * | 2007-04-02 | 2007-09-05 | 闫晓峰 | Metal material and process for producing various accessories therefrom |
| DE102007053549A1 (en) * | 2007-11-07 | 2009-05-14 | Hydraulik-Ring Gmbh | Electromagnetic hydraulic pump, has piston including gland packing/seal resting on inner wall of recess such that hydraulic pressure is generated in center recess filled with hydraulic fluid i.e. oil |
| CN203308705U (en) * | 2013-06-07 | 2013-11-27 | 北京航空航天大学 | Permanent magnet servo inner engaged gear type electro-hydraulic pump |
| CN104148499A (en) * | 2014-07-25 | 2014-11-19 | 上海海业机电设备有限公司 | Die for manufacture of gas cylinder spacers and manufacture process of gas cylinder spacers |
| CN204126888U (en) * | 2014-09-17 | 2015-01-28 | 襄阳博亚精工装备股份有限公司 | A kind of hydraulic engine gear pump |
-
2015
- 2015-10-14 CN CN201510659655.4A patent/CN106363347B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07301191A (en) * | 1994-05-02 | 1995-11-14 | Mitsubishi Heavy Ind Ltd | Constant delivery type electro-hydraulic pump |
| CN101029369A (en) * | 2007-04-02 | 2007-09-05 | 闫晓峰 | Metal material and process for producing various accessories therefrom |
| DE102007053549A1 (en) * | 2007-11-07 | 2009-05-14 | Hydraulik-Ring Gmbh | Electromagnetic hydraulic pump, has piston including gland packing/seal resting on inner wall of recess such that hydraulic pressure is generated in center recess filled with hydraulic fluid i.e. oil |
| CN203308705U (en) * | 2013-06-07 | 2013-11-27 | 北京航空航天大学 | Permanent magnet servo inner engaged gear type electro-hydraulic pump |
| CN104148499A (en) * | 2014-07-25 | 2014-11-19 | 上海海业机电设备有限公司 | Die for manufacture of gas cylinder spacers and manufacture process of gas cylinder spacers |
| CN204126888U (en) * | 2014-09-17 | 2015-01-28 | 襄阳博亚精工装备股份有限公司 | A kind of hydraulic engine gear pump |
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| Publication number | Publication date |
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| CN106363347B (en) | 2018-01-30 |
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