CN112197737A - Device for detecting angle of sealing seat surface of needle valve body - Google Patents
Device for detecting angle of sealing seat surface of needle valve body Download PDFInfo
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- CN112197737A CN112197737A CN202011194225.7A CN202011194225A CN112197737A CN 112197737 A CN112197737 A CN 112197737A CN 202011194225 A CN202011194225 A CN 202011194225A CN 112197737 A CN112197737 A CN 112197737A
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- rod
- needle valve
- fixed
- valve body
- measuring rod
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention provides a device for detecting the angle of the sealing seat surface of a needle valve body, which comprises: the device comprises a base frame, a digital display indicator, a lining, a fixed measuring rod and a sliding measuring rod; the base frame is provided with a guide hole, and the bushing is sleeved on the periphery of the guide hole; the digital display indicating gauge penetrates through the bushing and is inserted into the guide hole; the fixed measuring rod is inserted into the guide hole, one end of the sliding measuring rod is abutted to one end of the digital display indicating meter, and the other end of the sliding measuring rod penetrates through the fixed measuring rod. The embodiment of the invention can improve the detection speed and the detection rate and ensure the processing precision of the product.
Description
Technical Field
The invention relates to the technical field of high-precision machining, in particular to a device for detecting the angle of a sealing seat surface of a needle valve body.
Background
The needle valve body is an important part in the final oil injection process of the oil injector, and the injection angle and the injection pressure of the needle valve body influence the integral combustion effect of fuel oil in the cylinder, so that the machining precision of the needle valve body is relatively high. The processing procedure of the prior needle valve body is as follows: high-precision copying turning → deep hole processing → grinding processing of outer circle and inner hole → electric spark processing → burr cleaning → final warehousing. In the inner hole grinding process, the linear dimension of the cross section of the needle valve seat surface in the needle valve body hole and the coordinate of the outer end surface of the needle valve body is a key processing process, the lift dimension of the needle valve and the needle valve body in later assembly is directly influenced, the precision quality of the seat surface directly influences a key observation point for judging whether oil leakage exists in fuel oil or not, and in order to guarantee the angle precision dimension requirement of the seat surface, the angle needs to be detected by 100 percent so as to control the sealing performance between the needle valve and the needle valve body.
In the prior art, the angle of the seat surface of the needle valve body is generally measured by a three-coordinate measuring instrument, the detection method has a complex process, the outer circle of a part needs to be fixed by a special clamp firstly, a corresponding section is found, and the related size at the back can be detected.
Disclosure of Invention
The invention aims to provide a device capable of quickly and accurately detecting the angle of the sealing seat surface of a needle valve body, so that an operator can conveniently change the machining parameters of a machine tool in time in the product machining process.
In order to solve the technical problems, the technical scheme of the invention is as follows:
an apparatus for detecting an angle of a seal seat face of a needle valve body, comprising: the device comprises a base frame, a digital display indicator, a lining, a fixed measuring rod and a sliding measuring rod; the base frame is provided with a guide hole, and the bushing is sleeved on the periphery of the guide hole; the digital display indicating gauge penetrates through the bushing and is inserted into the guide hole; the fixed measuring rod is inserted into the guide hole, one end of the sliding measuring rod is abutted to one end of the digital display indicating meter, and the other end of the sliding measuring rod penetrates through the fixed measuring rod.
In a further development of the invention, the base frame comprises: a base; a fixing portion integrally connected to the base; the fixed part and the base are inclined at an angle of 65 degrees.
In a further development of the invention, the fixed measuring rod comprises: a fixed end; the first rod body is integrally connected with the fixed end; the second rod body is integrally connected with the first rod body; a third rod body integrally connected with the second rod body; the shaft hole is used for the movement of the sliding measuring rod;
the diameter of the fixed end is larger than that of the first rod body, the diameter of the first rod body is larger than that of the second rod body, and the diameter of the second rod body is larger than that of the third rod body; the diameter of the fixed end is larger than that of the first rod body, the diameter of the first rod body is larger than that of the second rod body, and the diameter of the second rod body is larger than that of the third rod body; and a slope angle is arranged between the joints of the fixed end, the first rod body, the second rod body and the third rod body.
In a further development of the invention, the angle of inclination is 30 degrees or 150 degrees.
In a further development of the invention, the sliding measuring rod comprises: a fourth rod body; a fifth rod body integrally connected with the fourth rod body; a sixth rod body integrally connected with the fifth rod body; the diameter of the fourth rod body is larger than that of the fifth rod body, and the diameter of the fifth rod body is larger than that of the sixth rod body.
In a further improvement of the present invention, the fourth rod, the fifth rod and the sixth rod are inclined at an angle of 45 degrees or 135 degrees.
According to a further improvement of the invention, the sliding measuring rod and the fixed measuring rod are in clearance fit.
In a further development of the invention, the bushing is fixed in the guide bore by means of a first fastening screw.
In a further improvement of the invention, the fixed end of the fixed measuring rod is fixed in the guide hole by a second fastening screw.
The invention has the further improvement scheme that the base frame is made of a circular fixed disc material HT20-40, and the end surface flatness is not higher than 0.002 mm; the material of the bushing is 45# steel; the sliding measuring rod and the fixed measuring rod are made of alloy steel plates GCr 15.
The scheme of the invention at least comprises the following beneficial effects:
1. compared with the three-coordinate measuring method in the prior art, the method has the advantages that the detection time is shortened, the cost is saved, the operation is convenient, the repeated measurement error is small, the machine tool operator can adjust the machine tool parameters at any time according to the detection data, the consistency of the part machining size precision and the online 100% inspection rate are ensured, and the machining time is reduced for the technical requirement of the later-stage assembly couple lift size.
2. The invention has simple design structure, easy meeting of processing conditions, high manufacturing precision and low processing cost, can replace corresponding fixed rods and sliding rods according to different similar needle valve bodies to meet the detection requirement when in use, saves the manufacturing period of the tool and meets the requirement of 100 percent of detection rate.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus for detecting an angle of a sealing seat face of a needle valve body according to the present invention;
FIG. 2 is a schematic view of the apparatus for detecting the angle of the sealing seat surface of the needle valve body according to the present invention;
FIG. 3 is a schematic view of the base frame structure of the apparatus for detecting the angle of the sealing seat surface of the needle valve body according to the present invention;
FIG. 4 is a schematic view of a fixed measuring rod of the apparatus for detecting the angle of the seat face of the needle valve body according to the present invention;
FIG. 5 is a schematic view of a sliding measuring rod of the apparatus for detecting the angle of the seat face of the needle valve body according to the present invention;
FIG. 6 is a schematic view of the combination of the fixed and sliding measuring rod of the apparatus for detecting the angle of the sealing seat surface of the needle valve body according to the present invention;
FIG. 7 is a schematic diagram of the front structure of the base frame of the apparatus for detecting the angle of the sealing seat surface of the needle valve body according to the present invention;
FIG. 8 is a schematic view of the bushing structure of the device for detecting the angle of the seat surface of the needle valve body according to the present invention;
FIG. 9 is a schematic cross-sectional view of the bushing A-A of the apparatus for detecting the angle of the seat face of the needle valve body according to the present invention;
in the figure, 1, a base frame; 2. a digital display indicator; 3. a bushing; 4. fixing the measuring rod; 401. a fixed end; 402. a first rod body; 403. a second rod body; 404. a third rod body; 405. a shaft hole; 5. sliding the measuring rod; 501. a fourth rod body; 502. a fifth rod body; 503. a sixth rod body; 6. a guide hole; 7. a first fastening screw; 8. and a second fastening screw.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The invention aims to provide a device capable of quickly and accurately detecting the angle of the sealing seat surface of a needle valve body, so that an operator can conveniently change the machining parameters of a machine tool in time in the product machining process.
As shown in fig. 1 to 9, an embodiment of the present invention provides an apparatus for detecting an angle of a seat surface of a needle valve body, including: the device comprises a base frame 1, a digital display indicator 2, a lining 3, a fixed measuring rod 4 and a sliding measuring rod 5; the base frame 1 is provided with a guide hole 6, and the bush 3 is sleeved on the periphery of the guide hole 6; the digital display indicating gauge 2 is inserted into the guide hole 6 through the bushing 3; the fixed measuring rod 4 is inserted into the guide hole 6, one end of the sliding measuring rod 5 is abutted to one end of the digital display indicator 2, and the other end of the sliding measuring rod penetrates through the fixed measuring rod 4.
In an embodiment of the present invention, the base frame 1 includes: a base 101; a fixing portion 102 integrally connected to the base 101; the fixing part 102 and the base 101 are inclined at an angle of 65 degrees; a specific included angle is formed between the base 101 and the fixing part 102, so that the installation of components is facilitated and the numerical value of the numerical display indicator table 2 is observed; the base frame 1 is made of a circular fixed disc material HT20-40, the end face flatness is not higher than 0.002mm, the wear resistance of the base frame 1 is high, and the service life is prolonged.
In an embodiment of the present invention, the fixed measuring rod 4 includes: a fixed end 401; a first rod 402 integrally connected to the fixed end 401; a second rod 403 integrally connected to the first rod 402; a third rod 404 integrally connected to the second rod 403; a shaft hole 405 for the movement of the sliding measuring rod 5;
the diameter of the fixed end 401 is larger than that of the first rod 402, the diameter of the first rod 402 is larger than that of the second rod 403, and the diameter of the second rod 403 is larger than that of the third rod 404; a slope angle is formed among the joints of the fixed end 401, the first rod body 402, the second rod body 403 and the third rod body 404; the slope angle is 30 degrees or 150 degrees, and the obtuse angle is favorable for clamping and using with the measured object.
According to a further improved scheme of the invention, the fixed measuring rod 4 is made of GCr15 high-carbon chromium steel preferably to meet the standard of a detection part, a numerical control high-precision longitudinal cutting machine tool is selected as a processing machine tool to ensure the basic size requirement, then a numerical control high-precision three-shaft inner hole grinding machine is selected, and finally the technical indexes of hole series size, form and position tolerance and roughness are ensured through a high-precision honing machine tool.
In an embodiment of the present invention, the sliding measuring rod 5 includes: a fourth bar 501; a fifth rod 502 integrally connected to the fourth rod 501; a sixth rod 503 integrally connected to the fifth rod 502; the diameter of the fourth rod 501 is larger than that of the fifth rod 502, and the diameter of the fifth rod 502 is larger than that of the sixth rod 503.
Wherein, all have 45 degrees or 135 degrees inclination between the fourth body of rod 501, the fifth body of rod 502, the sixth body of rod 503, the slip of the measuring stick 5 of being convenient for like this reduces the jamming situation of appearing, avoids detecting the error.
In the embodiment of the invention, the sliding measuring rod 5 and the fixed measuring rod 4 are in micro-clearance fit, the assembly technical condition is that the fit clearance is not more than 0.005mm, and after the assembly is finished, the sliding measuring rod 5 does not generate clamping stagnation when sliding up and down relative to the shaft hole 405 of the fixed measuring rod 4, so that the use effectiveness can be ensured.
In the embodiment of the invention, the bushing 3 is fixed in the guide hole 6 through a first fastening screw 7; the fixed measuring rod 4 is fixed in the guide hole 6 through a second fastening screw 8; the split type structure is adopted, so that the measurement object can be changed by changing the size of the fixed measuring rod 4, the purpose of multiple purposes can be achieved, and the cost is reduced.
When the measuring device is installed, the sliding measuring rod 5 is firstly inserted into the fixed measuring rod 4 for assembly, the measuring rod is installed at the lower end of the guide hole 6 of the base frame 1 after being assembled, the fixed end 401 of the fixed measuring rod 4 is fixed in the guide hole 6 through the second fastening screw 8 after being adjusted to a proper position, and the fixed measuring rod 4 is guaranteed not to slide up and down; then put into the upper end of 1 guiding hole 6 of base frame with bush 3, place and carry out little fastening with bush 3 through first fastening screw 7 after the suitable position, stretch into bush 3 with digital display indicating gauge 2 measuring end, adjust the distance of digital display indicating gauge 2 and the tail end of slip measuring stick 5, confirm that the tail end of slip measuring stick 5 is pushed down completely to digital display indicating gauge 2 measuring end, guarantee that slip measuring stick 5 compacts in fixed measuring stick 4, do not have the drunkenness phenomenon from top to bottom, then tighten first fastening screw 7 fixedly, accomplish the installation.
When the measuring device is used, the bottom end face of the integrally assembled measuring device is wiped cleanly and placed on the I-stage platform, then the middle hole of the needle valve body sample is inserted into the top end of the sliding measuring rod 5, the needle valve body is pushed upwards until the measuring end of the sliding measuring rod 5 props against the 60-degree sealing seat face of the needle valve body, after the digital display indicator 2 is cleared, the measurement is carried out 3 times in a reciprocating mode to ensure that the measuring results are consistent, and finally a machined part is measured in a step consistent mode in the measurement process to obtain the angle of the sealing seat face.
The design advantage of the invention is that the measuring device capable of rapidly detecting the angle of the sealing seat surface of the needle valve body on line is provided for the operators in actual field production and processing, the detection speed and the detection rate can be improved, the processing precision of the product is ensured, and the quality guarantee is provided for the subsequent assembly of the precision matching parts of the product, so that the process design can be optimized according to the existing detection conditions and the detection results, and the product technology breaks through the current situation and advances to the new field.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A device for detecting the angle of the sealing seat surface of a needle valve body is characterized by comprising: the device comprises a base frame (1), a digital display indicator (2), a lining (3), a fixed measuring rod (4) and a sliding measuring rod (5);
the base frame (1) is provided with a guide hole (6), and the bushing (3) is sleeved on the periphery of the guide hole (6);
the digital display indicating gauge (2) penetrates through the bushing (3) and is inserted into the guide hole (6);
the fixed measuring rod (4) is inserted into the guide hole (6);
one end of the sliding measuring rod (5) is abutted against one end of the digital display indicating meter (2), and the other end of the sliding measuring rod penetrates through the fixed measuring rod (4).
2. The apparatus of claim 1, wherein the needle valve body seal seat face angle is at least one of: the base frame (1) comprises: a base (101); a fixing portion (102) integrally connected to the base (101); the fixing part (102) and the base (101) are inclined at an angle of 65 degrees.
3. The apparatus of claim 1, wherein the needle valve body seal seat face angle is at least one of: the fixed measuring rod (4) comprises: a fixed end (401); a first rod (402) integrally connected to the fixed end (401); a second rod (403) integrally connected to the first rod (402); a third rod (404) integrally connected to the second rod (403); a shaft hole (405) for the movement of the sliding measuring rod (5);
the diameter of the fixed end (401) is larger than that of the first rod body (402), the diameter of the first rod body (402) is larger than that of the second rod body (403), and the diameter of the second rod body (403) is larger than that of the third rod body (404); and a slope angle is formed between the joints of the fixed end (401), the first rod body (402), the second rod body (403) and the third rod body (404).
4. The apparatus of claim 3, wherein the needle valve body seal seat face angle is at least one of: the slope angle is 30 degrees or 150 degrees.
5. The apparatus of claim 1, wherein the needle valve body seal seat face angle is at least one of: the sliding measuring rod (5) comprises: a fourth rod (501); a fifth rod (502) integrally connected to the fourth rod (501); a sixth rod (503) integrally connected to the fifth rod (502); the diameter of the fourth rod body (501) is larger than that of the fifth rod body (502), and the diameter of the fifth rod body (502) is larger than that of the sixth rod body (503).
6. The apparatus of claim 5, wherein the needle valve body seal seat face angle is at least one of: the fourth rod body (501), the fifth rod body (502) and the sixth rod body (503) are all inclined at an angle of 45 degrees or 135 degrees.
7. The apparatus of claim 1, wherein the needle valve body seal seat face angle is at least one of: the sliding measuring rod (5) and the fixed measuring rod (4) are in clearance fit.
8. The apparatus of claim 1, wherein the needle valve body seal seat face angle is at least one of: the bushing (3) is fixed in the guide hole (6) through a first fastening screw (7).
9. The apparatus of claim 3, wherein the needle valve body seal seat face angle is at least one of: and the fixed end (401) of the fixed measuring rod (4) is fixed in the guide hole (6) through a second fastening screw (8).
10. The apparatus of claim 1, wherein the needle valve body seal seat face angle is at least one of: the base frame (1) is made of a circular fixed disc material HT20-40, and the end surface flatness is not higher than 0.002 mm; the material of the bushing (3) is 45# steel; the sliding measuring rod (5) and the fixed measuring rod (4) are made of alloy steel plates GCr 15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011194225.7A CN112197737A (en) | 2020-10-30 | 2020-10-30 | Device for detecting angle of sealing seat surface of needle valve body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011194225.7A CN112197737A (en) | 2020-10-30 | 2020-10-30 | Device for detecting angle of sealing seat surface of needle valve body |
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| Publication Number | Publication Date |
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| CN112197737A true CN112197737A (en) | 2021-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011194225.7A Pending CN112197737A (en) | 2020-10-30 | 2020-10-30 | Device for detecting angle of sealing seat surface of needle valve body |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114483403A (en) * | 2022-01-24 | 2022-05-13 | 宁波兴马油嘴油泵有限公司 | Oil nozzle detection method and system, storage medium and intelligent terminal |
-
2020
- 2020-10-30 CN CN202011194225.7A patent/CN112197737A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114483403A (en) * | 2022-01-24 | 2022-05-13 | 宁波兴马油嘴油泵有限公司 | Oil nozzle detection method and system, storage medium and intelligent terminal |
| CN114483403B (en) * | 2022-01-24 | 2023-02-24 | 宁波兴马油嘴油泵有限公司 | Oil nozzle detection method and system, storage medium and intelligent terminal |
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