CN101737513A - Chute for spool of sliding valves - Google Patents
Chute for spool of sliding valves Download PDFInfo
- Publication number
- CN101737513A CN101737513A CN201010017946A CN201010017946A CN101737513A CN 101737513 A CN101737513 A CN 101737513A CN 201010017946 A CN201010017946 A CN 201010017946A CN 201010017946 A CN201010017946 A CN 201010017946A CN 101737513 A CN101737513 A CN 101737513A
- Authority
- CN
- China
- Prior art keywords
- spool
- valve core
- chute
- skewed slot
- axis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- Sliding Valves (AREA)
Abstract
The invention discloses a chute for a spool of sliding valves. The chute is arranged on an excircle surface of a larger diameter part at the boundary of larger and smaller diameters of the spool. The chute comprises an inclined bottom surface in an acute angle with the smaller diameter direction of the axis of the spool, and two side faces parallel to the axis of the spool, wherein the inclined bottom surface is in direct transition with an excircle surface of the spool through a face perpendicular to the axis of the spool. By the structural improvement, the axial dimension processing at the boundary of the chute and the excircle is easily controlled, the detection error is smaller, and the detection efficiency is improved. A lot of problems resulted from difficulty in accurate control of dimension measurement are solved; the measurement difficulty is reduced; and the accuracy of measurement is improved. Therefore, the performance of the products is more stable.
Description
Technical field
The present invention relates to the flume structure of a kind of sliding valve core, particularly sliding valve core.
Background technique
In the prior art, sliding valve core generally all has skewed slot on the surface, concrete structure is referring to Fig. 1, skewed slot is located at the outer round surface of the major diameter part of the large and small diameter boundary of spool, comprise one with the acutangulate inclined end face of valve core axis minor diameter direction 1, two sides parallel, 2 direct transformations of inclined end face and spool cylindrical with valve core axis.Because such part all is a slim-lined construction, and operation is more, have crooked the generation in the process.All there are very big difficulty in the processing of axial size and measurement in the original structure, at first this size is subjected to the influence of cylindrical size, because the influence of outside dimension, this axial dimension must add the system of keeping under strict control, and this size must be taked the method for projection when measuring, this method can only be used for checking, product is detected totally unrealistic, and gets an existence than mistake at the intersection of inclined-plane and cylindrical during projection.
Continuous increase along with the sliding valve core product demand, its dimensional accuracy also improves constantly, especially the axial dimension of skewed slot and cylindrical intersection is strict, on hydraulic product, has very high precision, control the skewed slot axial dimension more accurately and just mean and controlled the stroke of this element in system accurately, make the operation of whole hydraulic system more accurate.If continue to use original design proposal, seriously exceeded the ability of manufacturing; Because product structure is unreasonable, has improved difficulty of processing greatly, and frock and machine tool have been proposed very high requirement, also increased the sum of errors quality control difficulty of measuring greatly.
Summary of the invention:
The objective of the invention is to overcome above-mentioned deficiency, a kind of skewed slot of sliding valve core is provided.
Technological scheme of the present invention is as follows: the skewed slot of sliding valve core, skewed slot is located at the outer round surface of the major diameter part of the large and small diameter boundary of described spool, comprise one with the acutangulate inclined end face of described valve core axis's minor diameter direction, two sides parallel with described valve core axis, described inclined end face is connected transition through one with described valve core axis vertical facing directly with described spool periphery.Described skewed slot is symmetrically set in the outer round surface at described spool major diameter two ends.
The beneficial effect that the present invention compared with prior art has is: after architecture advances, the control of axial dimension easy processing, the detection error of skewed slot and cylindrical intersection are diminished and easy to control, detection efficiency raising; Solve and permitted to have reduced the measurement difficulty because dimension survey can't accurately be controlled the problem of being brought, improved the validity of measuring, control accuracy can reach 0.02mm, makes the performance of product more stable; Can improve production efficiency of products and quality of product greatly, improve the controllability of product procedure quality, help producing in enormous quantities, need not high-precision surveying instrument and just can accurately measure its size; This design change helps the raising of robot and automatic operating and operation precision.
Description of drawings:
Fig. 1 is the axial sectional view of flume structure of existing sliding valve core;
Fig. 2 is that axis of no-feathering of the present invention is to sectional view.
Embodiment:
Below in conjunction with the drawings and specific embodiments the present invention is described in detail.
As shown in Figure 2, the skewed slot of sliding valve core, skewed slot is located at cylindrical 2 surfaces of the major diameter part of the large and small diameter boundary of described spool, comprise one with the acutangulate inclined end face of described valve core axis minor diameter direction 1, two sides parallel with described valve core axis, described inclined end face 13 is connected transition with 2 of described spool cylindricals through one with described valve core axis vertical facing directly.Described two skewed slots are symmetrically set in cylindrical 2 surfaces at described spool major diameter two ends.
In addition to the implementation, the present invention can also have other mode of executions, and all employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop within the protection domain of requirement of the present invention.
Claims (2)
1. the skewed slot of sliding valve core, described skewed slot is located at the outer round surface of the major diameter part of the large and small diameter boundary of described spool, comprise one with the acutangulate inclined end face of described valve core axis's minor diameter direction, two sides parallel with described valve core axis, it is characterized in that described inclined end face is connected transition through one with described valve core axis vertical facing directly with described spool periphery.
2. the skewed slot of sliding valve core according to claim 1 is characterized in that described skewed slot is symmetrically set in the outer round surface at described spool major diameter two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010017946A CN101737513A (en) | 2010-01-18 | 2010-01-18 | Chute for spool of sliding valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010017946A CN101737513A (en) | 2010-01-18 | 2010-01-18 | Chute for spool of sliding valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101737513A true CN101737513A (en) | 2010-06-16 |
Family
ID=42461389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010017946A Pending CN101737513A (en) | 2010-01-18 | 2010-01-18 | Chute for spool of sliding valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101737513A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4941508A (en) * | 1989-12-28 | 1990-07-17 | Dana Corporation | Force balanced hydraulic spool valve |
| CN201377619Y (en) * | 2009-03-05 | 2010-01-06 | 无锡鹰贝精密轴承有限公司 | Valve core with guide structure |
| CN201615237U (en) * | 2010-01-18 | 2010-10-27 | 无锡鹰贝精密轴承有限公司 | Skewed slot of spool in slide valves |
-
2010
- 2010-01-18 CN CN201010017946A patent/CN101737513A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4941508A (en) * | 1989-12-28 | 1990-07-17 | Dana Corporation | Force balanced hydraulic spool valve |
| CN201377619Y (en) * | 2009-03-05 | 2010-01-06 | 无锡鹰贝精密轴承有限公司 | Valve core with guide structure |
| CN201615237U (en) * | 2010-01-18 | 2010-10-27 | 无锡鹰贝精密轴承有限公司 | Skewed slot of spool in slide valves |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100616 |