CN210773837U - Tool for quickly detecting depth of inner cavity of steel die forging piston - Google Patents
Tool for quickly detecting depth of inner cavity of steel die forging piston Download PDFInfo
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- CN210773837U CN210773837U CN201922336868.XU CN201922336868U CN210773837U CN 210773837 U CN210773837 U CN 210773837U CN 201922336868 U CN201922336868 U CN 201922336868U CN 210773837 U CN210773837 U CN 210773837U
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- die forging
- steel die
- positioning rod
- rod
- detection
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Abstract
The utility model relates to a steel die forging piston inner chamber degree of depth examines instrument soon compares with prior art and has solved the defect that positioning measurement technique detection efficiency is low, can't satisfy high quality, high accuracy, big batch inspection requirement. The suspended horizontal positioning component of the utility model is placed on the base of the steel die forging piston body through two lantern ring positioning rods, a left height positioning rod or a right height positioning rod; the detection assembly comprises a lever meter, the upper surface of the horizontal reference plate is provided with a platform, a detection port is arranged at the center of the platform and is located right above the through hole, and a measurement needle of the lever meter is inserted into the detection port. The utility model discloses realize the quick measurement of steel die forging piston quick location and inner chamber to can improve measured data's accuracy, eliminate repeated positioning measurement tolerance accumulation, shorten check-out time fast, improve steel die forging piston critical dimension's detection efficiency.
Description
Technical Field
The utility model relates to a technical field is measured to the steel forging piston, is a steel die forging piston inner chamber degree of depth examines instrument soon particularly.
Background
The steel die forging piston realizes high compression ratio in the engine, improves combustion efficiency, reduces exhaust emission, improves the performance such as life and all is superior to traditional aluminum alloy die casting piston, compares with traditional aluminum alloy die casting piston: the mechanical strength is high, and the high-strength high-power-rise engine is mainly used for a novel high-strength engine with the explosive power of the engine exceeding 20MPa and the power per liter exceeding 32 KW/L.
The steel die forging piston is difficult to form and high in required precision due to the fact that the depth of an inner cavity of the steel die forging piston is large, and the width-depth ratio exceeds the forging limit. Because the geometric shape of the internal cavity of the steel die forging piston is complex, accurate positioning and measurement are not easy to realize. The inner cavity of the existing steel die forging piston can only be measured by a three-coordinate measuring instrument, so that the measurement cost is high and the measurement efficiency is low. And the top edge of the piston die is abraded in the production process of the steel die forging piston die, so that the measurement reference fluctuation is large, and a series of quality problems such as workpiece positioning error, large size deviation and the like can be caused by repeated positioning.
Therefore, how to develop a quick cavity detection tool for a steel die forging piston is an urgent technical problem to be solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a steel die forging piston inner chamber degree of depth examines instrument soon and solves above-mentioned problem in order to solve among the prior art location measurement technique detection efficiency low, can't satisfy high quality, high accuracy, the defect that big batch inspection required.
In order to achieve the above purpose, the technical solution of the present invention is as follows:
a steel die forging piston inner cavity depth quick detection tool comprises a steel die forging piston body, a suspended positioning assembly and a detection assembly,
the suspended horizontal positioning assembly comprises a centering sleeve ring, the outer radius of the centering sleeve ring is the same as the radius of a base of the steel die forging piston body, two sleeve ring positioning rods are vertically arranged on the lower surface of the centering sleeve ring, a left height positioning rod and a right height positioning rod penetrate through the centering sleeve ring and are arranged on the centering sleeve ring, the two sleeve ring positioning rods, the left height positioning rod and the right height positioning rod are respectively positioned on a cross line of the central point of the centering sleeve ring, the bottoms of the two sleeve ring positioning rods, the bottoms of the left height positioning rod and the right height positioning rod are all positioned on the same plane, horizontal reference plates are arranged at the tops of the left height positioning rod and the right height positioning rod, through holes are formed in the middle of the horizontal reference plates and are positioned right above the central point of the inner cavity of the steel die forging piston body, a detection rod is placed in the through, the horizontal hanging positioning assembly is arranged on a base of the steel die forging piston body through two lantern ring positioning rods, a left height positioning rod or a right height positioning rod;
the detection assembly comprises a lever meter, the upper surface of the horizontal reference plate is provided with a platform, a detection port is arranged at the center of the platform and is located right above the through hole, and a measurement needle of the lever meter is inserted into the detection port.
The detection device is characterized by further comprising an auxiliary cross rod, wherein an auxiliary hole is formed in the middle of the auxiliary cross rod and is located right below the through hole, a detection rod guide sleeve is installed in the auxiliary hole, and the detection rod is inserted into the detection rod guide sleeve.
And the left height positioning rod and the right height positioning rod are provided with thin nuts and two thin nuts which are all positioned below the centering lantern ring, and the left height positioning rod and the right height positioning rod are provided with adjusting nuts and two adjusting nuts which are all positioned above the horizontal reference plate.
The bottom of the detection rod is arc-shaped.
The platform is arranged on the horizontal reference plate through a fixing bolt.
The bottoms of the lantern ring positioning rod, the left height positioning rod and the right height positioning rod are all conical.
Advantageous effects
The utility model discloses a steel die forging piston inner chamber degree of depth examines instrument soon compares with prior art and can realize the quick measurement of steel die forging piston quick location and inner chamber to can improve measured data's accuracy, eliminate repeated positioning measurement tolerance accumulation, shorten check-out time fast, improve steel die forging piston critical dimension's detection efficiency.
The utility model discloses a design of suspension location subassembly for can find big plane locating surface fast on steel die forging piston base, provide accurate reliable measuring basis for the measurement of inner chamber, still avoided the reference error that steel die forging piston top edge irregularity brought simultaneously.
Drawings
Fig. 1 is a front view of the structure of the present invention;
FIG. 2 is a perspective view of the structure of the present invention without the detection assembly;
FIG. 3 is a top view of FIG. 1;
the device comprises a steel die forging piston body, a centering sleeve ring, a sleeve ring positioning rod, a left height positioning rod, a right height positioning rod, a horizontal reference plate, a through hole, a detection rod, a detection platform, a detection port, a lever meter, an auxiliary cross rod, a fixing bolt, a detection rod guide sleeve, a thin nut and an adjusting nut, wherein the steel die forging piston body is 1, the centering sleeve ring is 2, the sleeve ring positioning rod is 3, the left height positioning rod is 4, the right height positioning rod is 5, the horizontal reference plate is 6, the through hole is 7, the detection rod is 8.
Detailed Description
In order to further understand and appreciate the structural features and advantages of the present invention, preferred embodiments and the accompanying drawings are described in detail as follows:
as shown in fig. 1, fig. 2 and fig. 3, the present invention provides a tool for quickly detecting the depth of an inner cavity of a steel die forging piston, which comprises a steel die forging piston body 1. The steel die forging piston inner cavity is found in the actual production batch inspection process, because the protruding part is worn and torn in the forging die forging production process, the depth value fluctuation of the piston skirt top and the inner cavity is large, the piston skirt top can be large in fluctuation as a measurement reference value, and the depth value of the inner cavity is not accurate enough if the piston skirt top is measured by using a traditional depth vernier caliper. In the forging die forging production process of the steel forging piston, the abrasion of the large plane (steel forging piston base) of the steel forging piston is the minimum, and the flatness of the large plane is smaller than 0.1mm, so that the large plane can be taken as a rough reference surface, namely, the depth value of the inner cavity of the piston is quickly measured by placing the suspended positioning assembly on the base large plane reference of the steel forging piston body 1.
The suspended positioning assembly is used for positioning the steel die forging piston body 1 during quick detection, and the base of the steel die forging piston body 1 is used as a large plane reference, so that the measurement error caused by the top of a piston skirt is avoided. The detection assembly is used for quickly detecting the inner cavity of the steel die forging piston body 1,
as shown in fig. 2, the overhung positioning assembly comprises a centering collar 2, the outer radius of the centering collar 2 is the same as the radius of the base of the steel die forging piston body 1, and the centering collar 2 provides support for three-point positioning of the overhung positioning assembly. Two lantern ring locating levers 3 are installed perpendicularly to the lower surface of centering lantern ring 2, and two lantern ring locating levers 3 fixed mounting are at the lower surface of centering lantern ring 2. Left high positioning rod 4 and right high positioning rod 5 all pierce through centering lantern ring 2 and install on centering lantern ring 2, and left high positioning rod 4 and right high positioning rod 5 demountable installation are in centering lantern ring 2 to this realizes left high positioning rod 4, the adjustment of right high positioning rod 5 on centering lantern ring 2, adjusts when examining with the convenience soon.
Two lantern ring locating levers 3, left high locating lever 4 and right high locating lever 5 are located centering lantern ring 2 central point cross line respectively, and the bottom of two lantern ring locating levers 3, left high locating lever 4 and right high locating lever 5 all is located the coplanar. The design of the bottom of this with two lantern ring locating levers 3, left high locating lever 4 and right high locating lever 5 is located the coplanar, is in order to cooperate the needs that detect fast, when examining soon, through the plane that these four bottoms are constituteed, can be fast on the base of steel die forging piston body 1 the big plane of location. The large plane positioning is adopted, the small plane positioning is not adopted, and the rapid detection and accurate detection are also the reference, the smaller the unit area of the inner cavity of the steel die forging piston is, the more concentrated the internal stress of the unit area is due to the abrasion of the convex part in the forging die forging production process, the more serious the abrasion of the smaller plane is, and the larger the plane is, the smaller the flatness value of the larger plane is. In the actual batch detection process, the larger the plane is, the smaller the abrasion is, the better the flatness is, so that the large plane is selected as a reference and the small plane is not suitable to be adopted.
The suspension positioning assembly is placed on a base of the steel die forging piston body 1 through two lantern ring positioning rods 3, a left height positioning rod 4 or a right height positioning rod 5, and a detection basis is provided for the detection assembly. The detection assembly comprises a lever meter 11, the upper surface of the horizontal reference plate 6 is provided with a platform 9, the center of the platform 9 is provided with a detection port 10, the detection port 10 is positioned right above the through hole 7, and the measurement needle of the lever meter 11 is inserted into the detection port 10.
In order to ensure the accuracy of the downward movement of the detection bar 8, an auxiliary cross bar 12 may also be used. The auxiliary hole is formed in the middle of the auxiliary cross rod 12 and located right below the through hole 7, the detection rod guide sleeve 14 is installed in the auxiliary hole, the detection rod 8 is inserted into the detection rod guide sleeve 14, and the verticality of the detection rod 8 is guaranteed by means of the detection rod guide sleeve 14, so that the accuracy of a measured value of the detection rod is guaranteed.
To the demountable installation of left high positioning rod 4 and right high positioning rod 5, can all install thin nut 15 and two thin nuts 15 and all be located the below of centering lantern ring 2 on left high positioning rod 4 and right high positioning rod 5, all install adjusting nut 16 and two adjusting nut 16 all are located the top of horizontal reference plate 6 on left high positioning rod 4 and the right high positioning rod 5. Therefore, the left height positioning rod 4 and the right height positioning rod 5 of the steel die forging piston inner cavity depth quick detection tool have interchangeability and universality. The detection rod 8 and the detection rod guide sleeve 14 are in clearance fit, and the fit tolerance is 0.012 mm. Long-time quick measurement, the measuring bar 8 makes a round trip to slide in measuring bar uide bushing 14, can cause the wearing and tearing of measuring bar uide bushing hole along with the lapse of time, influences steel die forging piston inner chamber degree of depth measurement accuracy, when the fit tolerance clearance is greater than 0.02mm, can dismantle fast, change, and the maintenance cost is low, and the availability factor is high. Similarly, the display stand 9 may be attached to the horizontal reference plate 6 by fixing bolts 13.
To further increase the detection accuracy, the bottom of the detection lever 8 may be rounded. Because the inner cavity of the steel die forging piston is an irregular curved surface, a measuring point is difficult to find by using a common depth vernier caliper. Through long-term observation, the bottom of the detection rod 8 is made into a circular arc shape, the circular arc shape can be tangent to the irregular curved surfaces of the inner cavity of the steel die forging piston, the circular arc shape can be matched with the measurement points quickly, the positioning is automatic, the measurement accuracy error is small, and the measurement efficiency is high.
In order to ensure the stability of the base (large plane reference) of the steel die forging piston body 1 positioned by the suspended horizontal positioning component, the bottoms of the lantern ring positioning rod 3, the left height positioning rod 4 and the right height positioning rod 5 can be conical. Because the roughness of the large plane of the base of the steel die forging piston body 1 is about 6.4 and the fine surface is uneven, if the bottoms of the lantern ring positioning rod 3, the left height positioning rod 4 and the right height positioning rod 5 are all processed into a circular truncated cone shape, the measurement error is found to be large, the reference plane is not parallel to the horizontal plane, and the reason is to determine a plane by using three planes. Through optimizing improvement many times, the event all processes into conical with lantern ring locating lever 3, left high locating lever 4 and right high locating lever 5 bottom, satisfies the theory of "a plane is confirmed to three points, and its big datum plane of confirming is parallel with horizontal datum plate horizontal plane all the time, has guaranteed steel die forging piston inner chamber degree of depth ability rapid survey to measurement accuracy is high advantage.
The quick detection method of the steel die forging piston inner cavity depth quick detection tool comprises the following steps:
in a first step, the overhung positioning element is placed on the base of the steel swaged piston body 1.
And secondly, placing the level meter on the top of the steel die forging piston body 1 and the horizontal reference plate 6, adjusting by using a thin nut 15 and an adjusting nut 16, ensuring that the upper plane of the detection rod 8 and the horizontal plane of the horizontal reference plate 6 are on the same plane, calibrating the lever meter 11, and displaying the lever meter 11 as a scale of '0'. By analogy, the depth of the pistons of different models is different, the level meter is placed on the top of the steel die forging piston body 1 and the horizontal reference plate 6, the thin nut 15 and the adjusting nut 16 are utilized for corresponding adjustment, the upper plane of the detection rod 8 and the horizontal plane of the horizontal reference plate 6 are ensured to be on the same plane, universal quick detection on the pistons of different models is realized, and the depth value of the inner cavity can be accurately measured.
And the third step, at least three points of the two lantern ring positioning rods 3, the left height positioning rod 4 and the right height positioning rod 5 are ensured to be in contact with the base of the steel die forging piston body 1, a plane is determined by utilizing the three points, at the moment, the top of the detection rod 8 is higher than or lower than the upper surface of the horizontal reference plate 6, and then the depth tolerance value of the lever meter can be rapidly measured through the top position of the detection rod 8 and is displayed on a dial of the lever meter, so that the reading is convenient.
Fourthly, inserting a measuring needle of the lever meter 11 into the detecting opening 10, and detecting the value that the top of the detecting rod 8 is higher or lower than the horizontal reference plate 6, wherein the value is the tolerance value of the deviation of the detected steel die forging piston body 1.
The manufacturing method of the steel die forging piston inner cavity depth quick detection tool comprises the following steps:
firstly, the detection rod 8 is subjected to rough turning and finish turning after being tempered by 40Cr, the outer cylindrical surface is ground, and the hardness is 270 +/-10 HB. The detection rod guide sleeve 14 is made of C101 red copper alloy, the detection rod 8 and the detection rod guide sleeve 14 are in clearance fit, the fit tolerance is 0.012mm, the guide precision can be kept, and the service life can be prolonged.
And secondly, performing interference assembly on the detection rod guide sleeve 14 and the inner hole of the auxiliary cross rod 12, heating the auxiliary cross rod 12 to 120 +/-20 ℃, cooling the detection rod guide sleeve 14 to minus 160 +/-20 ℃, and performing interference assembly.
And thirdly, hardening and tempering the two lantern ring positioning rods 3, the left height positioning rod 4 and the right height positioning rod 5 by 40Cr, and then roughly turning and finely turning the hardened rods to obtain external threaded rods with the hardness of 280 +/-10 HB. The diameter of the thread is matched with the diameter of the thread of the inner hole on the centering lantern ring 2.
Therefore, the processing of each key part of the steel die forging piston inner cavity depth quick detection tool is realized.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a steel die forging piston inner chamber degree of depth examines instrument soon, includes steel die forging piston body (1), its characterized in that: also comprises a suspended positioning component and a detection component,
the suspended horizontal positioning assembly comprises a centering sleeve ring (2), the outer radius of the centering sleeve ring (2) is the same as the radius of a base of a steel die forging piston body (1), two sleeve ring positioning rods (3) are vertically arranged on the lower surface of the centering sleeve ring (2), a left height positioning rod (4) and a right height positioning rod (5) penetrate through the centering sleeve ring (2) and are arranged on the centering sleeve ring (2), the two sleeve ring positioning rods (3), the left height positioning rod (4) and the right height positioning rod (5) are respectively positioned on a cross line of the central point of the centering sleeve ring (2), the bottoms of the two sleeve ring positioning rods (3), the left height positioning rod (4) and the right height positioning rod (5) are all positioned on the same plane, a horizontal reference plate (6) is arranged at the tops of the left height positioning rod (4) and the right height positioning rod (5), and a through hole (7) is arranged in the middle, the through hole (7) is positioned right above the center point of the inner cavity of the steel die forging piston body (1), the detection rod (8) is placed in the through hole (7), the length of the detection rod (8) is equal to the distance from the upper surface of the horizontal reference plate (6) to the center point of the inner cavity of the steel die forging piston body (1), and the suspended horizontal positioning component is placed on a base of the steel die forging piston body (1) through the two lantern ring positioning rods (3), the left height positioning rod (4) or the right height positioning rod (5);
the detection assembly comprises a lever meter (11), the upper surface of the horizontal reference plate (6) is provided with a platform (9), the center of the platform (9) is provided with a detection port (10), the detection port (10) is positioned right above the through hole (7), and the measurement needle of the lever meter (11) is inserted into the detection port (10).
2. The tool for quickly detecting the depth of the inner cavity of the steel die forging piston as claimed in claim 1, wherein: the detection device is characterized by further comprising an auxiliary cross rod (12), wherein an auxiliary hole is formed in the middle of the auxiliary cross rod (12), the auxiliary hole is located right below the through hole (7), a detection rod guide sleeve (14) is installed in the auxiliary hole, and the detection rod (8) is inserted into the detection rod guide sleeve (14).
3. The tool for quickly detecting the depth of the inner cavity of the steel die forging piston as claimed in claim 1, wherein: the left height positioning rod (4) and the right height positioning rod (5) are provided with thin nuts (15), the two thin nuts (15) are located below the centering lantern ring (2), the left height positioning rod (4) and the right height positioning rod (5) are provided with adjusting nuts (16), and the two adjusting nuts (16) are located above the horizontal reference plate (6).
4. The tool for quickly detecting the depth of the inner cavity of the steel die forging piston as claimed in claim 1, wherein: the bottom of the detection rod (8) is arc-shaped.
5. The tool for quickly detecting the depth of the inner cavity of the steel die forging piston as claimed in claim 1, wherein: the display platform (9) is installed on the horizontal reference plate (6) through a fixing bolt (13).
6. The tool for quickly detecting the depth of the inner cavity of the steel die forging piston as claimed in claim 1, wherein: the bottoms of the lantern ring positioning rod (3), the left height positioning rod (4) and the right height positioning rod (5) are all conical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922336868.XU CN210773837U (en) | 2019-12-24 | 2019-12-24 | Tool for quickly detecting depth of inner cavity of steel die forging piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922336868.XU CN210773837U (en) | 2019-12-24 | 2019-12-24 | Tool for quickly detecting depth of inner cavity of steel die forging piston |
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| Publication Number | Publication Date |
|---|---|
| CN210773837U true CN210773837U (en) | 2020-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922336868.XU Expired - Fee Related CN210773837U (en) | 2019-12-24 | 2019-12-24 | Tool for quickly detecting depth of inner cavity of steel die forging piston |
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| CN (1) | CN210773837U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110879032A (en) * | 2019-12-24 | 2020-03-13 | 重庆工程职业技术学院 | Steel die forging piston inner cavity depth quick detection tool and manufacturing method and quick detection method thereof |
-
2019
- 2019-12-24 CN CN201922336868.XU patent/CN210773837U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110879032A (en) * | 2019-12-24 | 2020-03-13 | 重庆工程职业技术学院 | Steel die forging piston inner cavity depth quick detection tool and manufacturing method and quick detection method thereof |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200616 Termination date: 20211224 |
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| CF01 | Termination of patent right due to non-payment of annual fee |