CN218600463U - Piston ring groove coaxiality detection device - Google Patents
Piston ring groove coaxiality detection device Download PDFInfo
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- CN218600463U CN218600463U CN202223341934.0U CN202223341934U CN218600463U CN 218600463 U CN218600463 U CN 218600463U CN 202223341934 U CN202223341934 U CN 202223341934U CN 218600463 U CN218600463 U CN 218600463U
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- ring groove
- coaxiality
- piston ring
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Abstract
The utility model provides a piston ring groove axiality detection device, relate to the check out test set field, the piston supporting seat is used for contacting and positioning piston's bottom surface, two supporting rollers of side contact of piston, when examining, install the detector that floats in detecting the supporting seat, the sense terminal of the detector that floats stretches into the piston ring groove of piston, it makes piston and supporting roller produce relative rotation to rotate the piston, utilize the axiality of the detector detection piston ring groove that floats, if the numerical value of the detector that floats beats the range and is less than the scope of predetermineeing, then indicate the axiality and satisfy the demands. The utility model discloses utilize the relative motion of piston and supporting roller to realize that the axiality detects, only need the piston to rotate alone, it is relative with other structure centers not to need, can realize detecting the axiality of piston fast accurately.
Description
Technical Field
The utility model relates to a check out test set field further relates to a piston ring groove axiality detection device.
Background
In the piston processing process, each procedure is independent and continuous processing, when a piston ring groove and an excircle are processed, in order to ensure the production efficiency and reduce the stress deformation of the excircle processing, the processing needs to be completed by assembling and disassembling for many times, the positioning adopts a tool clamp with the same reference and the same specification and size, but because a gap exists between a piston positioning surface and the positioning tool clamp, certain deviation exists between the bottom diameter center of the piston ring groove and the excircle center of the piston due to the repeated assembling and disassembling processing, when the deviation exceeds the allowable range of a product, the coaxiality of the bottom diameter center of the piston ring groove relative to the excircle center of the piston is caused to be out of tolerance, the matching of the piston, a piston ring and a cylinder sleeve is influenced, and the phenomena of oil leakage, gas leakage and the like of an engine are easily caused.
For the method, precision detection needs to be carried out on the piston ring groove, and the coaxiality of the piston is ensured, wherein the conventional coaxiality detection method comprises the following steps:
the method comprises the following steps:
the piston is horizontally placed on a 90-degree V-shaped block, the piston is positioned by an excircle, the 90-degree V-shaped block is placed on the piston in an inverted mode, the piston is pressed tightly by taking the V-shaped block as 0 degree, the bottom diameter height of the ring groove is measured, the bottom diameter height of the ring groove and the highest point of the excircle at the ring groove are detected at the same time, two numerical values are obtained, the piston is placed by rotating to a 180-degree position, the two numerical values are obtained by measurement, the obtained first group of numerical values are compared and calculated, and the deviation value in the 0-180-degree straight line direction is obtained. Meanwhile, the piston is rotated to 90 degrees again and placed, after two values are obtained through measurement, the piston is rotated to 270 degrees again and placed, two values are obtained through measurement, the second group of values are compared and calculated, and the deviation value in the linear direction of 90-270 degrees is obtained. And calculating an offset angle and an offset value relative to the position of 0 degree according to the principle of the offset component and the triangular relation, and calculating a coaxiality value according to the offset value.
The second method comprises the following steps:
the piston is placed on a rotary positioning disc, the piston is clamped on a special mechanism or equipment, the end face runout and the circumferential runout of the positioning disc are corrected to be within 0.01mm, the piston is clamped and compressed, and the piston is corrected to be within 0.02mm by taking the cylindrical surface of the excircle of the piston or the part with the smallest ellipse of the outer round head part as a reference; and then measuring the circumferential run-out of the bottom diameter of the ring groove by using a dial indicator and a special gauge head for measuring the bottom diameter of the ring groove, recording the maximum value and the minimum value of the circumferential run-out, and calculating to obtain the coaxiality of the center of the bottom diameter of the ring groove of the piston relative to the center of the excircle of the piston.
The first method is poor in measurement accuracy, the second method needs to position the piston and the positioning disc in advance, operation is complex, and efficiency is low.
For those skilled in the art, how to detect the coaxiality of the piston quickly and accurately is a technical problem to be solved at present.
SUMMERY OF THE UTILITY MODEL
The utility model provides a piston ring groove axiality detection device can detect the axiality of piston fast accurately, and concrete scheme is as follows:
a piston ring groove coaxiality detection device, comprising:
a piston support seat for contacting and positioning the bottom surface of the piston;
the detection supporting seat is arranged on the piston supporting seat and used for supporting the floating detector, so that the detection end of the floating detector extends into the piston ring groove of the piston;
the supporting roller is arranged on the piston supporting seat or the detection supporting seat, and a rotating shaft of the supporting roller is parallel to the axis of the piston; the two supporting rollers are used for contacting and supporting the cylindrical surface of the piston; when the piston is supported on the supporting roller and rotates, the output value of the floating detector judges the coaxiality of the piston ring groove.
Optionally, the detection support seat is movably assembled to the piston support seat, and the detection support seat can move in a direction parallel to the axis of the piston to adjust the position.
Optionally, the detection support seat is provided with an adjustment waist hole, and a positioning bolt penetrates through the adjustment waist hole to fix the detection support seat to the piston support seat.
Optionally, the floating detector is disposed between the two support rollers.
Optionally, the floating detector is disposed on a centerline of the two support rollers.
Optionally, the supporting surface of the piston supporting seat is a horizontal surface, and the detection supporting seat vertically protrudes from the supporting surface of the piston supporting seat.
Optionally, a wear-resistant pipe is arranged on the detection support seat along the horizontal direction, the length of the wear-resistant pipe is greater than the thickness of the detection support seat, and the floating detector is inserted into the wear-resistant pipe.
Optionally, the wear-resistant pipe is tightly pressed and positioned on the detection supporting seat through a fastening screw.
Optionally, the supporting roller is rotatably mounted on a positioning column, and the positioning column can adjust the distance between the supporting roller and the supporting surface of the piston supporting seat.
Optionally, a flexible driving device is arranged on the piston supporting seat, and the flexible driving device is provided with at least two rollers with elastic side walls for contacting with the side walls of the piston, and the rollers are used for driving the piston to rotate.
The utility model provides a piston ring groove axiality detection device, the piston supporting seat is used for contacting and positioning piston's bottom surface, two support rolls of side contact of piston, when examining time measuring, install the detector that floats in detecting the supporting seat, the detection end of the detector that floats stretches into the piston ring groove of piston, the rotation piston makes piston and support roll produce relative rotation, utilize the detector that floats to detect the axiality of piston ring groove, if the numerical value of the detector that floats beats the range and is less than the scope of predetermineeing, then indicate the axiality and meet the requirements. The utility model discloses utilize the relative motion of piston and supporting roller to realize that the axiality detects, only need the piston to rotate alone, need not be relative with other structure centers, can realize detecting the axiality of piston fast accurately.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front view of a device for detecting coaxiality of a piston ring groove provided by the present invention;
fig. 2 is a top view of the device for detecting the coaxiality of the piston ring groove provided by the present invention;
fig. 3 is a top view of the device for detecting coaxiality of piston ring grooves provided by the present invention cooperating with a floating detector;
fig. 4 is a side view of the device for detecting the coaxiality of the piston ring groove provided by the present invention, which is matched with a floating detector to detect the piston.
The figure includes:
Detailed Description
The core of the utility model lies in providing a piston ring groove axiality detection device, can detect the axiality of piston fast accurately.
In order to make those skilled in the art better understand the technical solution of the present invention, the following will describe the device for detecting coaxiality of a piston ring groove in further detail with reference to the accompanying drawings and specific embodiments.
Combine fig. 1, fig. 2, the utility model provides a piston ring groove axiality detection device, including piston supporting seat 1, detection supporting seat 2, supporting roller 3 isotructure, wherein piston supporting seat 1 is used for the bottom surface of contact and location piston, also is one of them surface and the mutual contact of piston bottom surface of piston supporting seat 1, and both keep being parallel to each other.
The detection support seat 2 is arranged on the piston support seat 1, the piston support seat 1 positions the detection support seat 2, the detection support seat 2 is used for supporting the floating detector 4, and the floating detector 4 can adopt a dial indicator, a dial indicator and the like; the detection support base 2 supports the floating detector 4 such that a detection end (right end in fig. 4) of the floating detector 4 extends into the piston ring groove of the piston.
Supporting rollers 3 are installed on piston supporting seat 1 or detect supporting seat 2, and supporting rollers 3 set up two at least, and supporting rollers 3's pivot is on a parallel with the axis of piston, combines figure 4, and supporting rollers 3 and piston wherein are equallyd divide and are rotatory around vertical axis respectively.
The two supporting rollers 3 are used for contacting and supporting the cylindrical surface of the piston, and the supporting rollers 3 can adopt the forms of bearings and the like, and adopt rolling contact to reduce the friction force during detection. When the piston is pressed against the supporting roller 3 and rotated, the output value of the floating detector 4 judges the coaxiality of the piston ring groove.
Referring to fig. 3, during detection, the support roller 3 and the floating detector 4 are installed in place, and the position of the floating detector 4 is kept fixed during detection; the piston is pressed against the two supporting rollers 3 and the floating detector 4 is brought into contact with the piston ring groove, the floating detector 4 generates a reading, and the reading of the floating detector 4 may be, but is not necessarily, set to zero at this time; and then, applying a rotating acting force to the piston, rotating the piston for 360 degrees in the whole detection process, enabling the piston to be always propped against the two supporting rollers 3 in the rotating process, reading the readings of the floating detector 4, and determining the coaxiality of the piston according to the jumping condition of the output value of the floating detector 4. Because the positions of the supporting roller 3 and the floating detector 4 are fixed, if the coaxiality of the piston ring grooves is better, the reading jitter of the floating detector 4 is in a smaller range.
The utility model discloses utilize the relative motion of piston and supporting roller to realize that the axiality detects, only need the piston to rotate alone, need not be relative with other structure centers, can realize detecting the axiality of piston fast accurately.
On the basis of the above scheme, the utility model discloses a detect 2 movable assembly of supporting seat in piston supporting seat 1, detect that supporting seat 2 can follow the direction removal adjusting position that is on a parallel with the piston axis. Referring to fig. 1 and 4, the detecting support 2 can move up and down to adjust the position, so that the height of the detecting support 2 and the height of the floating detector 4 can be changed, and pistons of different specifications can be detected.
Combine fig. 1, the utility model discloses setting up at detection supporting seat 2 and adjusting waist hole 21, the length direction who adjusts waist hole 21 is vertical, and positioning bolt 22 passes and adjusts waist hole 21 to threaded connection is in piston supporting seat 1, will detect supporting seat 2 location and be fixed in piston supporting seat 1 through positioning bolt 22. The cooperation mode that adopts regulation waist hole 21 and positioning bolt 22 is only an preferred scheme, the utility model discloses can also adopt other detection supporting seat 2 position control modes.
Preferably, in conjunction with fig. 2 and 3, the floating detector 4 of the present invention is disposed between the two support rollers 3, and it is best that the floating detector 4 is disposed on the centerline of the two support rollers 3. The two support rollers 3 make a tangent circle, and the floating detector 4 is located on the minor arc of the circle. Of course, the present invention is not limited thereto, and the floating detector 4 may be disposed at other positions, such as the left side and the right side of fig. 2 and 3, and these specific embodiments are all included in the scope of the present invention.
On the basis of above-mentioned arbitrary technical scheme and intercombination, the utility model discloses a supporting surface of piston supporting seat 1 is the horizontal plane, detects the supporting surface of 2 vertical protrusions of supporting seat in piston supporting seat 1. With reference to fig. 4, when detecting, the bottom surface of piston is placed horizontally, and unsteady detector 4 is the level setting, and the piston is rotatory around vertical pivot, of course, the utility model discloses can also be the horizontal direction with the piston and place, the holding surface of piston supporting seat 1 this moment is vertical state, and these specific embodiments all should be contained within the protection scope of the utility model.
With reference to fig. 1, the wear-resistant pipe 23 is horizontally disposed on the detection support seat 2, and the wear-resistant pipe 23 is an unsealed cylindrical pipe having an axial gap, so that the floating detector 4 can be better clamped and fixed after being mounted; the length of wear-resisting pipe 23 is greater than the thickness that detects supporting seat 2, and the detector 4 cartridge that floats is in wear-resisting pipe 23, and wear-resisting pipe 23 has bigger area of contact with the detector 4 that floats, can make the detector 4 that floats more stable.
Combine fig. 1, fig. 4, the utility model discloses a wear-resisting pipe 23 passes through fastening screw 24 and pushes up tight location on detecting supporting seat 2, and when fastening screw 24 pushed up wear-resisting pipe 23, can be with the inseparable parcel of wear-resisting pipe 23 in the periphery of unsteady detector 4 to reach fixed effect, need loosen fastening screw 24 earlier when adjusting unsteady detector 4.
Specifically, combine fig. 1, fig. 4, the utility model discloses a supporting roller 3 rotates and installs in reference column 31, and the one end threaded connection of reference column 31 is in piston supporting seat 1, and reference column 31 can adjust the interval of supporting roller 3 for the supporting surface of piston supporting seat 1.
More preferably, the utility model discloses can set up flexible drive arrangement on piston supporting seat 1, flexible drive arrangement can be with the piston roof pressure on supporting roller 3. The flexible driving device is provided with at least two side walls which are elastic rollers and used for contacting the side walls of the piston, so that the problem of movement caused by the size error of the piston is solved, the roller is used for driving the piston to rotate, and the piston does not need to be manually rotated when being detected.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a piston ring groove axiality detection device which characterized in that includes:
the piston supporting seat (1) is used for contacting and positioning the bottom surface of the piston;
the detection supporting seat (2) is arranged on the piston supporting seat (1) and is used for supporting the floating detector (4) so that the detection end of the floating detector (4) extends into a piston ring groove of the piston;
the supporting roller (3) is arranged on the piston supporting seat (1) or the detection supporting seat (2), and a rotating shaft of the supporting roller (3) is parallel to the axis of the piston; the two supporting rollers (3) are used for contacting and supporting the cylindrical surface of the piston; when the piston is supported on the supporting roller (3) and rotates, the output value of the floating detector (4) judges the coaxiality of the piston ring groove.
2. The device for detecting the coaxiality of the piston ring groove as claimed in claim 1, wherein the detection support seat (2) is movably assembled to the piston support seat (1), and the detection support seat (2) can move to an adjustment position in a direction parallel to the axis of the piston.
3. The device for detecting the coaxiality of the piston ring groove as claimed in claim 2, wherein the detection support seat (2) is provided with an adjusting waist hole (21), and a positioning bolt (22) penetrates through the adjusting waist hole (21) to fixedly position the detection support seat (2) on the piston support seat (1).
4. The device for detecting the coaxiality of the piston ring groove as claimed in claim 2, wherein the float detector (4) is disposed between the two support rollers (3).
5. The apparatus for detecting coaxiality of piston ring grooves according to claim 4, wherein the floating detector (4) is provided on a centerline of the two support rollers (3).
6. The apparatus for detecting the coaxiality of the piston ring groove as claimed in any one of claims 1 to 5, wherein the supporting surface of the piston support seat (1) is a horizontal surface, and the detection support seat (2) vertically protrudes from the supporting surface of the piston support seat (1).
7. The device for detecting the coaxiality of the piston ring groove as claimed in claim 6, wherein a wear-resistant pipe (23) is arranged on the detection support seat (2) along the horizontal direction, the length of the wear-resistant pipe (23) is greater than the thickness of the detection support seat (2), and the floating detector (4) is inserted into the wear-resistant pipe (23).
8. The device for detecting the coaxiality of the piston ring grooves according to claim 7, wherein the wear-resistant pipe (23) is tightly positioned on the detection support seat (2) through a fastening screw (24).
9. The device for detecting the coaxiality of the piston ring groove as claimed in claim 6, wherein the supporting roller (3) is rotatably mounted on a positioning column (31), and the positioning column (31) can adjust the distance between the supporting roller (3) and the supporting surface of the piston supporting seat (1).
10. The apparatus for detecting coaxiality of piston ring grooves according to claim 6, wherein the piston supporting seat (1) is provided with a flexible driving device, and the flexible driving device is provided with at least two rollers with elastic side walls for contacting with the side walls of the piston, and the rollers are used for driving the piston to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223341934.0U CN218600463U (en) | 2022-12-13 | 2022-12-13 | Piston ring groove coaxiality detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223341934.0U CN218600463U (en) | 2022-12-13 | 2022-12-13 | Piston ring groove coaxiality detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218600463U true CN218600463U (en) | 2023-03-10 |
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ID=85409862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223341934.0U Active CN218600463U (en) | 2022-12-13 | 2022-12-13 | Piston ring groove coaxiality detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218600463U (en) |
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2022
- 2022-12-13 CN CN202223341934.0U patent/CN218600463U/en active Active
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