CN210268497U - Cylinder head pipe hole straightness detection device that hangs down - Google Patents
Cylinder head pipe hole straightness detection device that hangs down Download PDFInfo
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- CN210268497U CN210268497U CN201921076875.4U CN201921076875U CN210268497U CN 210268497 U CN210268497 U CN 210268497U CN 201921076875 U CN201921076875 U CN 201921076875U CN 210268497 U CN210268497 U CN 210268497U
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Abstract
The utility model relates to a diesel engine part measuring device provides a cylinder head pipe hole straightness detection device that hangs down. The cylinder cover conduit hole verticality detection device is provided with a reference plate and a positioning mandrel; the middle part of the positioning core shaft is provided with a shoulder which is integrally formed with the positioning core shaft; two round tables are sleeved on the positioning mandrel; the outer diameters of the two round tables are in small clearance fit with the aperture of the cylinder cover conduit hole; the upper end of the positioning mandrel is in interference fit with the gauge body; the measuring body comprises a cylinder I, a cylinder II, a cylinder III and a cylinder IV from top to bottom in sequence; the cylinder IV is in clearance fit with the corresponding through hole on the reference plate; the cylinder I is provided with an axial through hole; a circular measuring head is arranged at the center of the upper end surface of the top head; the cylinder III is provided with a radial through hole for a special-shaped pin to pass through; the end of the iso-shaped pin is provided with a drum-shaped body which is contacted with the datum plate. The utility model discloses not only effectively solved pipe hole straightness that hangs down can not the on-line measuring problem, had simple structure, easy and simple to handle's characteristics moreover.
Description
Technical Field
The utility model relates to a diesel engine part measuring device, concretely relates to cylinder head pipe hole straightness detection device that hangs down.
Background
The cylinder cover is a heavy part of the diesel engine, and the working performance of the diesel engine is greatly influenced by the processing quality of the part; a plurality of guide pipe holes are distributed in the cylinder cover and used for installing guide pipes; when the diesel engine works, the valve reciprocates in the guide pipe to control the mixed gas to enter and discharge from the combustion chamber; if the verticality of the guide pipe hole is out of tolerance, the sealing capability of the combustion chamber is reduced, so that the working performance of the diesel engine is influenced; therefore, the guide pipe hole has higher requirements on the verticality of the end surface of the cylinder cover.
In actual production, how to accurately and quickly detect the perpendicularity of the guide pipe hole to the end face of the cylinder cover has great influence on the improvement of the processing quality and the production efficiency of products.
The verticality of the guide pipe hole to the end face of the cylinder cover is detected by adopting a three-coordinate measuring machine, the measurement precision is high, and a special probe is required to be configured. In addition, the machined parts need to be transported to a precise measurement chamber for carrying out, and online detection cannot be realized.
At present, domestic diesel engine manufacturing enterprises generally adopt special measuring tools to detect the perpendicularity of a guide pipe hole to the end face of a cylinder cover, for example, patents with patent numbers of ZL200620124972.2 and ZL201220498141.7 disclose a guide pipe hole measuring tool which can realize the online detection of form and position tolerance of the guide pipe hole, but the defects that an indicating gauge needs to be installed on the measuring tool, a contact of the indicating gauge needs to be directly contacted with the measured surface of a part, and the measuring tool is complex in structure and complex in operation.
SUMMERY OF THE UTILITY MODEL
For solving above measurement technical problem, the utility model aims at providing a cylinder head pipe hole straightness detection device that hangs down.
The utility model adopts the following technical scheme for accomplishing the above purpose:
a cylinder head conduit hole verticality detection device is provided with a reference plate which is placed on the end face of a cylinder head; the detection device is also provided with a positioning mandrel inserted into a guide pipe hole of the cylinder cover; the positioning mandrel is a cylindrical long rod; the middle part of the positioning mandrel is provided with a shoulder which is integrally formed with the positioning mandrel; two round tables are sleeved on the positioning mandrel; the two round tables are positioned below the shoulder, a gap is formed between the two round tables, and a gap is also formed between the round table positioned at the upper part and the shoulder; the two round tables and the positioning mandrel are integrally formed; the outer diameters of the two round tables are in small clearance fit with the aperture of the cylinder cover conduit hole; the upper end of the positioning mandrel is positioned in the measuring tool body and is in interference fit with the measuring tool body; the measuring device comprises a cylinder I, a cylinder II, a cylinder III and a cylinder IV from top to bottom in sequence; the diameter of the cylinder I is the largest, the diameter of the cylinder III is the next to the diameter of the cylinder IV, and the diameter of the cylinder IV is the smallest; an axial through hole is formed in the center of the cylinder IV, and the axial through hole is in interference fit with the upper end of the positioning mandrel; the cylinder IV of the gauge body is in clearance fit with a corresponding through hole on the reference plate to form a structure that the gauge body drives the positioning mandrel to rotate in the cylinder cover conduit hole under the action of external force; the center of the cylinder I is provided with an axial through hole for transition fit with the plug; the top is a T-shaped body; the lower part of the T-shaped body is a cylinder in transition fit with the axial through hole in the cylinder I; the upper part of the T-shaped body is a truncated cone body with the diameter larger than the axial through hole on the cylinder I, and a circular measuring head is arranged at the center of the upper end surface of the truncated cone body; the cylinder III is provided with a radial through hole for a special pin to pass through, and two end faces of the radial through hole are planes; the special-shaped pin is horizontally arranged; the characteristic pin is provided with an equal-diameter section I in transition fit with the radial through hole; one end of the equal-diameter section I is provided with an equal-diameter section II positioned outside the radial through hole; the diameter of the equal-diameter section II is smaller than that of the equal-diameter section I; external threads are machined on the outer wall surface of the equal-diameter section II; the other end of the equal-diameter section I is provided with an equal-diameter section III which is positioned outside the radial through hole; the diameter of the equal-diameter section III is larger than that of the equal-diameter section I; the end head of the equal-diameter section III is provided with a drum-shaped body with the size larger than that of the equal-diameter section III; the lower end surface of the drum-shaped body is contacted with the reference plate during measurement; the detection device is also provided with a lever indicator; the contact of the lever indicator is contacted with the round measuring head on the top head; during measurement, a reference plate is placed on the end face of the cylinder cover, and then a positioning mandrel of the detection device penetrates through a round hole of the reference plate and is inserted into a guide pipe hole of the cylinder cover until a drum-shaped body of the special-shaped pin is contacted with the upper end face of the reference plate; and (3) contacting a contact of the lever indicator with a round measuring head of a top of the detection device, slightly rotating for a specific circle by hand, and recording the reading of the lever indicator to obtain the verticality numerical value of the cylinder cover guide pipe hole.
A tool withdrawal groove is processed between the equal-diameter section III and the equal-diameter section I.
The cylinder I is machined with patterns on the outer circular surface.
The reference plate is a rectangular plate body, and a through hole with the diameter larger than the outer diameter of the cylinder IV is machined in the rectangular plate body.
The utility model provides a cylinder head pipe hole straightness detection device that hangs down of cylinder head pipe hole hangs down straightness detection device adopts technical scheme, has not only effectively solved pipe hole straightness that hangs down and can not the on-line measuring problem, has following advantage moreover: during measurement, the contact of the indicating gauge is not contacted with the surface of the part, and the contact of the indicating gauge and the contact surface do not generate relative motion, so that the measurement precision is higher; the indicating gauge is independently installed, the detecting device is not required to be provided with an indicating gauge installing and adjusting device, and the measuring device is simple in structure and easy and convenient to operate.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic view of a medium-sized embodiment of the present invention;
FIG. 4 is a view A-A of FIG. 3;
FIG. 5 is a schematic view of the working principle of the cylinder head conduit hole perpendicularity detecting device.
In the figure: 1. 2-1 of a top, 2-2 of a cylinder I, 2-2 of a cylinder II, 2-3 of a cylinder III, 2-4 of a cylinder IV, 2-5 of a radial through hole, 3 of a special-shaped pin, 4 of a nut, 5 of a reference plate, 6 of a positioning mandrel, 6-1 of a shoulder, 6-2 of a circular table, 7 of a lever indicator, 8 of a cylinder cover.
Detailed Description
The invention is described in connection with the accompanying drawings and the embodiments:
as shown in fig. 1 and 2 in combination with fig. 5, a cylinder head conduit hole perpendicularity detecting device has a reference plate 5 for placing on an end surface of a cylinder head 8; the detection device is also provided with a positioning mandrel 6 inserted into a guide pipe hole of the cylinder cover; the positioning mandrel 6 is a cylindrical long rod; the middle part of the positioning mandrel 6 is provided with a shoulder 6-1 which is integrally formed with the positioning mandrel; the positioning mandrel is sleeved with two round tables 6-2; the two circular truncated cones 6-2 are positioned below the shoulder 6-1, a gap is formed between the two circular truncated cones 6-2, and a gap is also formed between the circular truncated cone 6-2 positioned at the upper part and the shoulder 6-1; the two round tables 6-2 and the positioning mandrel are integrally formed; the outer diameters of the two round tables 6-2 are in small clearance fit with the aperture of the cylinder cover conduit hole; the upper end of the positioning mandrel 6 is positioned in the gauge body 12, is in interference fit with the gauge body 2, and is supported by the shoulder 6-1; the gauge body 2 described in conjunction with FIG. 3 is a cylinder I2-1, a cylinder II 2-2, a cylinder III 2-3 and a cylinder IV 2-4 in sequence from top to bottom; the diameter of the cylinder I2-1 is the largest, the diameter of the cylinder III 2-3 is the second largest, and the diameter of the cylinder IV 2-4 is the smallest; an axial through hole is formed in the center of the cylinder IV 2-4, and the axial through hole is in interference fit with the upper end of the positioning mandrel 6; the cylinder IV 2-4 of the gauge body 2 is in clearance fit with a corresponding through hole on the reference plate 5, so that a structure that the gauge body 2 drives the positioning mandrel 6 to rotate in the cylinder cover conduit hole under the action of external force is formed; the cylinder I2-1 of the measuring body 2 is provided with an axial through hole for transition fit with the plug 1; the top 1 is a T-shaped body; the lower part of the T-shaped body is a cylinder in transition fit with the axial through hole in the cylinder I2-1; the upper part of the T-shaped body is a truncated cone body with the diameter larger than the axial through hole on the cylinder I2-1, and a circular measuring head is arranged at the center of the upper end face of the truncated cone body; with reference to fig. 4, the cylinder iii 2-3 of the gauge body 2 has a radial through hole 2-5 for the special pin 3 to pass through, and two end faces of the radial through hole 2-5 are flat; the special-shaped pin 3 is horizontally arranged; the characteristic pin 3 is provided with an equal-diameter section I in transition fit with the radial through hole 2-5; one end of the equal-diameter section I is provided with an equal-diameter section II which is positioned outside the radial through hole 2-5; the diameter of the equal-diameter section II is smaller than that of the equal-diameter section I; external threads are machined on the outer wall surface of the equal-diameter section II; the other end of the equal-diameter section I is provided with an equal-diameter section III which is positioned outside the radial through hole 2-5; the diameter of the equal-diameter section III is larger than that of the equal-diameter section II I; the end head of the equal-diameter section III is provided with a drum-shaped body with the size larger than that of the equal-diameter section III; the lower end surface of the drum-shaped body is contacted with the reference plate 5 during measurement; the detection device is also provided with a lever indicator 7; the contact of the lever indicator gauge 7 is in contact with the round measuring head on the top head 1; the whole connection relationship is as follows: the special-shaped pin 3 is arranged in a radial through hole 2-5 of the measuring body 2 and is fastened by a nut 4. The upper section of the positioning mandrel 6 is arranged in an axial through hole on the lower end surface of the gauge body 2; the lower section of the top 1 is arranged in an axial through hole on the upper end surface of the measuring body 2.
A tool withdrawal groove is processed between the equal-diameter section III and the equal-diameter section II I.
2. the outer circle surface of the cylinder I2-1 is provided with patterns.
The reference plate 5 is a rectangular plate body, and a circular through hole with the diameter larger than the outer diameter of the cylinder IV 2-4 of the gauge body 2 is machined in the rectangular plate body.
During measurement, the reference plate 5 is firstly placed on the end face of the cylinder cover 8 to be measured, and then the positioning mandrel 6 of the detection device penetrates through the through hole of the reference plate 5 and is inserted into the guide pipe hole of the cylinder cover 8 until the drum-shaped body of the special-shaped pin 3 is contacted with the upper end face of the reference plate 5.
And (3) contacting a contact of the lever indicator 7 with a circular measuring head of a circular truncated cone body of the top head 1 of the detection device, slightly rotating for 2 circles by hands, and recording the reading of the lever indicator 7 to obtain the verticality numerical value of the guide pipe hole of the cylinder cover 8.
Claims (4)
1. The utility model provides a straightness detection device that hangs down in cylinder head pipe hole which characterized in that: the detection device has a reference plate for placing on the end face of the cylinder head; the detection device is also provided with a positioning mandrel inserted into a guide pipe hole of the cylinder cover; the positioning mandrel is a cylindrical long rod; the middle part of the positioning mandrel is provided with a shoulder which is integrally formed with the positioning mandrel; two round tables are sleeved on the positioning mandrel; the two round tables are positioned below the shoulder, a gap is formed between the two round tables, and a gap is also formed between the round table positioned at the upper part and the shoulder; the two round tables and the positioning mandrel are integrally formed; the outer diameters of the two round tables are in small clearance fit with the aperture of the cylinder cover conduit hole; the upper end of the positioning mandrel is positioned in the measuring tool body and is in interference fit with the measuring tool body; the measuring device comprises a cylinder I, a cylinder II, a cylinder III and a cylinder IV from top to bottom in sequence; the diameter of the cylinder I is the largest, the diameter of the cylinder III is the next to the diameter of the cylinder IV, and the diameter of the cylinder IV is the smallest; an axial through hole is formed in the center of the cylinder IV, and the axial through hole is in interference fit with the upper end of the positioning mandrel; the cylinder IV of the gauge body is in clearance fit with a corresponding through hole on the reference plate to form a structure that the gauge body drives the positioning mandrel to rotate in the cylinder cover conduit hole under the action of external force; the cylinder I is provided with an axial through hole for transition fit with the plug; the top is a T-shaped body; the lower part of the T-shaped body is a cylinder in transition fit with the axial through hole in the cylinder I; the upper part of the T-shaped body is a truncated cone body with the diameter larger than the axial through hole on the cylinder I, and a circular measuring head is arranged at the center of the upper end surface of the truncated cone body; the cylinder III is provided with a radial through hole for a special pin to pass through, and two end faces of the radial through hole are planes; the special-shaped pin is horizontally arranged; the special-shaped pin is provided with an equal-diameter section I in transition fit with the radial through hole; one end of the equal-diameter section I is provided with an equal-diameter section II positioned outside the radial through hole; the diameter of the equal-diameter section II is smaller than that of the equal-diameter section I; external threads are machined on the outer wall surface of the equal-diameter section II; the other end of the equal-diameter section I is provided with an equal-diameter section III which is positioned outside the radial through hole; the diameter of the equal-diameter section III is larger than that of the equal-diameter section I; the end head of the equal-diameter section III is provided with a drum-shaped body with the size larger than that of the equal-diameter section III; the lower end surface of the drum-shaped body is contacted with the reference plate during measurement; the detection device is also provided with a lever indicator; the contact of the lever indicator gauge is in contact with the round measuring head on the top; during measurement, a reference plate is placed on the end face of the cylinder cover, and then a positioning mandrel of the detection device penetrates through a through hole of the reference plate and is inserted into a guide pipe hole of the cylinder cover until a drum-shaped body of the special pin is contacted with the upper end face of the reference plate; and (3) contacting a contact of the lever indicator with a round measuring head of a top of the detection device, slightly rotating for a specific circle by hand, and recording the reading of the lever indicator to obtain the verticality numerical value of the cylinder cover guide pipe hole.
2. The cylinder head conduit hole perpendicularity detecting apparatus according to claim 1, wherein: a tool withdrawal groove is processed between the equal-diameter section III and the equal-diameter section I.
3. The cylinder head conduit hole perpendicularity detecting apparatus according to claim 1, wherein: the cylinder I is machined with patterns on the outer circular surface.
4. The cylinder head conduit hole perpendicularity detecting apparatus according to claim 1, wherein: the reference plate is a rectangular plate body, and a through hole with the diameter larger than the outer diameter of the cylinder IV is machined in the rectangular plate body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921076875.4U CN210268497U (en) | 2019-07-11 | 2019-07-11 | Cylinder head pipe hole straightness detection device that hangs down |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921076875.4U CN210268497U (en) | 2019-07-11 | 2019-07-11 | Cylinder head pipe hole straightness detection device that hangs down |
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| CN210268497U true CN210268497U (en) | 2020-04-07 |
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| CN201921076875.4U Active CN210268497U (en) | 2019-07-11 | 2019-07-11 | Cylinder head pipe hole straightness detection device that hangs down |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285746A (en) * | 2019-07-11 | 2019-09-27 | 河南柴油机重工有限责任公司 | A kind of cylinder cover guide pipe hole perpendicularity detection device |
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2019
- 2019-07-11 CN CN201921076875.4U patent/CN210268497U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285746A (en) * | 2019-07-11 | 2019-09-27 | 河南柴油机重工有限责任公司 | A kind of cylinder cover guide pipe hole perpendicularity detection device |
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