CN108692666B - Cylinder jacket internal diameter detection device - Google Patents
Cylinder jacket internal diameter detection device Download PDFInfo
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- CN108692666B CN108692666B CN201810262428.1A CN201810262428A CN108692666B CN 108692666 B CN108692666 B CN 108692666B CN 201810262428 A CN201810262428 A CN 201810262428A CN 108692666 B CN108692666 B CN 108692666B
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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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
- G01B11/12—Measuring arrangements characterised by the use of optical techniques for measuring diameters internal diameters
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Abstract
The invention provides a cylinder sleeve inner diameter detection device, which comprises a transfer part, a guide part and a measurement part, wherein the transfer part drives a detection probe or a cylinder sleeve to move; the transfer part comprises a horizontal movement mechanism, a vertical movement mechanism and a rotary movement mechanism; the guide part comprises at least two guide strips; the measuring part comprises a pushing mechanism and a measuring sensor. The inner diameter detection device provided by the invention solves the problem of insufficient flexibility of the traditional mechanical transfer through the flexible design of the transfer mechanism; through secondary positioning, errors in transfer are avoided during measurement, the probe has the problem of self-adaption cylinder wall inclination, and measurement errors are greatly reduced; the telescopic guide strip greatly improves the detection range and solves the problem of small measuring range of high-precision measuring equipment.
Description
Technical Field
The invention relates to an inner diameter detection device, in particular to a cylinder sleeve inner diameter detection device.
Background
The detection of the inner diameter of the cylinder sleeve is an important link of a detection item in a production link and is always a key point and a difficult point of the detection. The current detection methods are mainly divided into two categories, namely contact measurement and non-contact measurement. The common contact measurement method has the defects of low measurement speed, easy scratch of the inner surface of the cylinder sleeve and the like. At present, non-contact measurement (such as a laser sensor) is carried out, because the outer surface and the inner surface of the cylinder sleeve are non-finished machined surfaces, and the bottom surface has reasons such as unevenness, the measurement cannot be precisely calibrated, the measurement precision, the accuracy and the like have great influence, meanwhile, full-automatic measurement and online measurement cannot be realized, and the actual online detection requirement of a factory production line cannot be met.
The concrete expression is as follows: because the outer surface of the cylinder sleeve is a rough surface and the bottom surface of the cylinder sleeve is inclined, the conventional detection device cannot ensure that the measurement center of the sensor is consistent with the center of the cylinder sleeve during measurement and has eccentricity; in addition, the diameters of at least three different cross sections of the cylinder sleeve need to be measured during measurement, the cylinder sleeve and the sensor need to move relatively to each other, and measurement errors can be introduced due to eccentricity and deflection of the cylinder sleeve.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the problem of mechanical transfer flexibility is not enough is solved, the problem that mechanical detection cannot be self-adaptive to cylinder wall inclination is solved, and the high-precision cylinder sleeve inner diameter detection device is provided.
In order to solve the above purpose, the invention adopts the following technical scheme: a cylinder sleeve inner diameter detection device comprises a transfer part, a guide part and a measurement part; the shifting part drives the detection probe or the cylinder sleeve to move, and the detection probe is provided with a guide part and a measurement part;
the shifting part comprises a horizontal movement mechanism, a vertical movement mechanism and a rotary movement mechanism which are driven by a power mechanism and drive the detection probe or the cylinder sleeve to do horizontal, vertical and rotary movements;
the guide part comprises at least two guide strips, the axial direction of each guide strip is the same as that of the cylinder sleeve, and the guide strips are tightly attached to the inner wall of the cylinder sleeve during operation;
the measurement section includes: the pushing mechanism is used for adjusting the posture of the cylinder sleeve in the process of tightly attaching the guide strip to the inner wall of the cylinder sleeve, and the measuring sensor is used for measuring the inner diameter of the cylinder sleeve after the guide strip is tightly attached to the inner wall of the cylinder sleeve;
the power mechanism of the transfer part, the pushing mechanism and the measuring sensor during measurement are all controlled by a control system; when the device works, the transfer part extends the detection probe into the cylinder sleeve, and the control system controls the pushing mechanism to adjust the posture of the cylinder until each guide strip is tightly attached to the inner wall of the cylinder sleeve; when the guide strip is tightly attached to the inner wall of the cylinder sleeve, the control system controls the measuring sensors to work, and at least one measuring sensor arranged on the detection probe is used for measuring the inner diameter of the cylinder sleeve.
The position relationship among the horizontal movement mechanism, the vertical movement mechanism and the rotary movement mechanism is one of the following three types:
a) the horizontal movement mechanism is fixed on the workbench, the vertical movement mechanism is arranged on the horizontal movement mechanism in a sliding manner, the rotary movement mechanism is arranged on the vertical movement mechanism in a sliding manner, and the detection probe is fixed below the rotary movement mechanism;
b) the horizontal movement mechanism is fixed on the working table surface, the rotary movement mechanism is arranged on the horizontal movement mechanism in a sliding manner, and a cylinder sleeve is arranged on the rotary movement mechanism; the vertical movement mechanism is fixed on the workbench, and the detection probe is arranged on the vertical movement mechanism in a sliding manner;
c) the rotary motion mechanism is fixed on the workbench, and a cylinder sleeve is arranged on the rotary motion mechanism; the horizontal movement mechanism is fixed on the workbench, the vertical movement mechanism is arranged on the horizontal movement mechanism in a sliding mode, and the detection probe is arranged on the vertical movement mechanism in a sliding mode.
The detection probe comprises a connecting piece and a fixing plate, the guide part comprises three or four fixed guide strips, and the fixed guide strips are in a common circle and are fixed on the fixing plate.
The detection probe comprises a connecting piece and a fixing plate, the guide part comprises two fixed guide strips, the two fixed guide strips are arranged on the fixing plate, and when the two guide strips are tightly attached to the inner wall of the cylinder sleeve, an arc determined between the two fixed guide strips is a minor arc of the inner diameter of the cylinder sleeve.
The detection probe comprises a connecting piece and a fixing plate, and the guide part comprises two fixed guide strips and a movable guide strip; the fixed guide strip is fixed on the fixed plate, and the movable guide strip is driven by the guide strip driving device and slides on the fixed plate in the radial direction; when the movable guide strip and the fixed guide strip are tightly attached to the inner wall of the cylinder sleeve, the movable guide strip, the fixed guide strip and the cylinder sleeve are in a common circle.
The pushing mechanism comprises at least three independently controlled pushing cylinders, all the pushing cylinders are vertically distributed along the axial direction of the cylinder sleeve, and all the pushing cylinders are fixed on a workbench on the outer side of the cylinder sleeve.
The pushing mechanism comprises at least three independently controlled pushing cylinders, all the pushing cylinders are vertically distributed along the axial direction of the cylinder sleeve, all the pushing cylinders are fixed on a support arm of the detection probe of the transfer part, and the support arm and the detection probe move synchronously.
The pushing mechanism is composed of a pushing cylinder which is controlled independently, and the pushing cylinder is arranged on a fixing plate of the detection probe; and the pushing cylinder is arranged opposite to the guide strip.
The measuring sensors comprise two measuring sensors which are arranged in a cross way or in a reverse way.
The measuring sensor is one, a calibration device is needed during measurement, after an ejector rod of the calibration device contacts one end of the inner wall of the air cylinder, the measuring sensor starts to measure the inner diameter, and the calibration device is connected with the control system.
The invention has the beneficial effects that: by adopting the technical scheme, the inner diameter of the cylinder sleeve can be accurately measured. Firstly, the problem of insufficient flexibility of the traditional mechanical transfer is solved through the flexible design of the transfer mechanism; secondly, through secondary positioning, errors in transfer and carrying are avoided during measurement, the probe has the problem of self-adaption cylinder wall inclination, and measurement errors are greatly reduced; finally, the telescopic guide strip greatly improves the detection range and solves the problem of small measuring range of high-precision measuring equipment.
Drawings
Fig. 1 is a structural view of a transfer part in which horizontal movement, vertical movement, and rotational movement are concentrated on a detection probe.
Fig. 2 is a structural view of a transfer part in which a horizontal movement and a rotary movement are performed on a workpiece and a detection probe only performs a vertical movement.
Fig. 3 is a structural view of a transfer part of which the rotating mechanism is arranged at a workpiece and horizontal and vertical movement is completed by a detection probe.
Fig. 4 is a schematic diagram of three fixed guides.
FIG. 5 is a diagram of the positional relationship of three fixed guide bars to the cylinder wall.
Figure 6 is a block diagram of four fixedly guided inspection probes.
Fig. 7 is a perspective view of two fixedly guided inspection probes.
Figure 8 is a side view of two fixedly guided inspection probes.
Fig. 9 is a schematic diagram of the active guide.
Fig. 10 is a schematic structural view of the movable guide.
FIG. 11 is a schematic view of the pushing mechanism externally disposed.
FIG. 12 is a schematic diagram of the pushing mechanism being externally disposed.
FIG. 13 is a schematic view of the pushing mechanism with the pushing mechanism built in.
FIG. 14 is a cross-sectional view of a dual measurement sensor.
FIG. 15 is a diagram of a dual measurement sensor in an inverted arrangement.
FIG. 16 is a schematic diagram of a single measurement sensor.
FIG. 17 is a top view of a single measurement sensor.
Detailed Description
A cylinder sleeve inner diameter detection device comprises a transfer part, a guide part and a measurement part; the shifting part drives the detection probe 1 or the cylinder sleeve 2 to move, and the detection probe 1 is provided with a guide part and a measurement part;
the shifting part comprises a horizontal movement mechanism 3, a vertical movement mechanism 4 and a rotary movement mechanism 5 which are driven by a power mechanism and drive the detection probe or the cylinder sleeve to do horizontal, vertical and rotary movements;
the guide part comprises at least two guide strips 6, the axial direction of the guide strips is the same as the axial direction of the cylinder sleeve 2, and the guide strips 6 are tightly attached to the inner wall of the cylinder sleeve 2 during operation;
the measurement section includes: the pushing mechanism 7 is used for adjusting the posture of the cylinder sleeve in the process that the guide strip is tightly attached to the inner wall of the cylinder sleeve, and the measuring sensor 9 is used for measuring the inner diameter of the cylinder sleeve 2 after the guide strip is tightly attached to the inner wall of the cylinder sleeve 2.
The power mechanism of the transfer part, the pushing mechanism and the measuring sensor 9 during measurement are all controlled by a control system; when the device works, the transfer part extends the detection probe into the cylinder sleeve 2, and the control system controls the pushing mechanism 7 to adjust the posture of the cylinder until each guide strip 6 is tightly attached to the inner wall of the cylinder sleeve 2; when the guide strips 6 are tightly attached to the inner wall of the cylinder sleeve 2, the control system controls the measuring sensors to work, and at least one measuring sensor arranged on the detection probe is used for measuring the inner diameter of the cylinder sleeve.
The transferring part can be divided into three schemes according to the difference of the movement of the detecting probe, or the position relation of the horizontal movement mechanism, the vertical movement mechanism and the rotary movement mechanism. It should be noted that the horizontal movement mechanism, the vertical movement mechanism and the rotary movement mechanism are all in the prior art, for example, the horizontal movement mechanism and the vertical movement mechanism all adopt slide block and slide rail movement mechanisms, and the rotary movement mechanism adopts a rotary swing table controlled by a motor, which can all be purchased from commercially available products.
a) As shown in fig. 1, the horizontal movement mechanism 3 is fixed on the workbench, the vertical movement mechanism 4 is slidably arranged on the horizontal movement mechanism, the rotary movement mechanism is slidably arranged on the vertical movement mechanism, and the detection probe 1 is fixed below the rotary movement mechanism 5. Horizontal motion, vertical motion and rotary motion of this scheme all concentrate on the gauge head, and the benefit of doing so is that the work piece can be motionless, and whole detection mechanism goes the initiative to detect the work piece, and the benefit is to avoid the work piece to remove the unexpected condition such as the in-process takes place to empty, skew, and the bad department is that all motion is too concentrated and lead to whole testing stand atress capacity variation. The device is suitable for detection occasions with high precision and small external force.
b) As shown in fig. 2, the horizontal movement mechanism 3 is fixed on the working table, the rotary movement mechanism 5 is arranged on the horizontal movement mechanism in a sliding manner, and a cylinder sleeve is arranged on the rotary movement mechanism 5; the vertical movement mechanism 4 is fixed on the workbench, and the detection probe 1 is arranged on the vertical movement mechanism 4 in a sliding manner. According to the scheme, the horizontal movement and the rotary movement are carried out on the workpiece, and the detection probe 1 only carries out vertical movement. Therefore, the position accuracy of the vertical movement and detection device is ensured, and the mechanical structure of the movement of the probe is simple and stable. The defects are that clamping or supporting measures are required to be taken for the workpiece, and the problems of overturning, eccentricity and the like of the workpiece in the motion process are prevented. And the horizontal movement, the rotary movement and the height of the clamping part mechanism are overlapped together, so that the whole detection device is overhigh, and the structural strength is reduced.
c) As shown in fig. 3, the rotary motion mechanism 5 is fixed on the worktable, and a cylinder sleeve is arranged on the rotary motion mechanism 5; the horizontal movement mechanism 3 is fixed on the workbench, the vertical movement mechanism 4 is arranged on the horizontal movement mechanism 3 in a sliding mode, and the detection probe 1 is arranged on the vertical movement mechanism 4 in a sliding mode. According to the scheme, the rotary motion mechanism is placed on a workpiece part, and horizontal and vertical motions are completed by the detection probe.
The detection probe comprises a connecting piece 10 and a fixing plate 11, and a guide strip 6 and a measuring sensor 9 are arranged below the fixing plate.
The measuring part mainly solves the problem of inclination of the cylinder wall, and the inclination of the cylinder wall causes the non-parallel of the detection plane of the sensor and the section of the inner diameter to be measured, so that a measuring object becomes an ellipse and the error source cannot be accurately analyzed. The detection principle can also be divided into the following methods:
①, fixed guide
The guide part comprises two, three or four fixed guide strips which are in a common circle and fixed on the fixed plate. It should be noted that the guide bar is a cylindrical column.
The three fixed guide bars are simple in structure, the principle is as shown in fig. 4 and 5, the longer the length of the guide bar 6 is, the smaller the included angle between the two is, and the maximum angle allowed by the error can be obtained through calculation. The guide strip length can be determined by calculation. The technical scheme has the advantages that the structure is simple, additional driving force is not needed, the structure of the guide strip requires that the inner diameter to be measured is as close as possible to the enveloping circles of the guide strips, and therefore sufficient space is provided for the sensor. The defect is that the inner diameter to be measured has small change, otherwise the detection principle fails; meanwhile, because the inner diameter is close to the size of the enveloping circle, in order to smoothly place the measuring head into the inner hole, the scheme puts higher requirements on the action position precision of the whole detection device. The method is suitable for silk-level and micron-level detection with small deviation of the inner diameter to be detected.
The structure diagram of the four fixed guide strips is shown in fig. 6, and the four fixed guide strips are distributed in four directions of the fixed plate and are arranged in a pairwise opposite mode.
The two guide strips are structurally shown in fig. 7 and 8, the guide part comprises two fixed guide strips 6, the two fixed guide strips are arranged on the fixing plate 11, and when the two guide strips are tightly attached to the inner wall of the cylinder sleeve, an arc determined between the two fixed guide strips is a minor arc of the inner diameter of the cylinder sleeve.
②, moving guide
As shown in fig. 10, the guide portion includes two fixed guide bars, one movable guide bar; wherein, the fixed guide strip is fixed on the fixed plate, and the movable guide strip is driven by the guide strip driving device 13 and slides on the fixed plate in the radial direction; when the movable guide strip and the fixed guide strip are tightly attached to the inner wall of the cylinder sleeve, the movable guide strip and the fixed guide strip are in a common circle. The movable guide bar can move along the arrow direction in fig. 9, and is actively adapted to the size of the cylinder wall. Because the movement requires the addition of a drive and a guide (guide rail), the entire lateral head part is compact. The advantage is that the measuring range is larger, the disadvantage is that the moving action is increased, and the required detection time is correspondingly lengthened. The method is suitable for inner diameter detection when the detection deviation is large and the beat requirement is not high. It should be noted that the guide bar driving device 13 may be a small cylinder or an electromagnetic clutch controlled by the control system.
The pushing mechanism of the measuring part of the invention also comprises a plurality of arrangement modes, such as the cylinder sleeve is internally arranged, the cylinder sleeve is externally arranged, and the external part is arranged on the workbench or fixed on the support arm of the detection probe.
When the pushing mechanism is externally arranged, as shown in fig. 11 and 12, the pushing mechanism includes at least three independently controlled pushing cylinders 8, all the pushing cylinders 8 are vertically distributed along the axial direction of the cylinder liner 2, and all the pushing cylinders 8 are fixed on a workbench outside the cylinder liner. The push rod of the pushing cylinder is approximately aligned with the center of the guide strip, so that no matter the contact point of the guide strip and the inner wall is an upper end point or a lower end point, a rotary torque is formed. After pushing the outer side of the cylinder wall, the cylinder wall can automatically attach to the guide strip, thereby playing a role in guiding. Therefore, the size of the whole pushing device is not limited, and larger force can be provided as far as possible to enable the guide bar to be attached to the cylinder wall.
Besides, the external mode can also be: the pushing mechanism 7 comprises at least three independently controlled pushing cylinders 8, all the pushing cylinders 8 are vertically distributed along the axial direction of the cylinder sleeve 2, and all the pushing cylinders 8 are fixed on a detection probe support arm of the transfer part. The support arm is used for extending the detecting probe connecting piece 10 outwards to extend out of one support arm, and the support arm extends downwards to the corresponding position of the detecting probe and can move vertically along with the synchronization of the detecting probe. Therefore, when the detection probe enters the cylinder sleeve for inner diameter measurement, the pushing cylinder 8 on the bracket arm directly performs pushing action, and the relative position of the two is fixed, so that the measurement is accurate.
When the pushing mechanism is built in, as shown in fig. 13, the pushing mechanism is composed of a pushing cylinder 8 which is controlled independently, and the pushing cylinder 8 is arranged on a fixing plate of the detection probe; and the pushing cylinder 8 is arranged opposite to the guide strip 6.
The measurement process occurs after the guiding posture correcting action, and in order to make the schematic diagram clear, the guiding part is not shown in the figure. Before the measurement, the concept of "calibration" is first clarified. The "calibration" is to use a standard measuring instrument to detect whether the accuracy (precision) of the instrument meets the standard, and is generally used for instruments with higher precision. The main functions of calibration are as follows: 1. determining the input-output relationship of the instrument or the measuring system, and giving the instrument or the measuring system a division value; 2. determining a static characteristic index of the instrument or the measurement system; 3. eliminating system error and improving the accuracy of the instrument or system. 4. In scientific measurement, calibration is an important step that cannot be ignored.
The number of the measuring sensors may be two or one.
When the measuring sensors are dual sensors, the two measuring sensors are in a cross arrangement or in a reverse arrangement.
The reverse arrangement is most ideal, the principle is shown in figure 15, when in calibration, the dotted line is the length of the known ring gauge, the arrows at two sides are measurement values, the length of the middle rectangular part can be reversely deduced, and therefore, when in calibration, the length of the inner diameter can be indirectly measured when the workpiece is measured. And the light of the sensor vertically hits on the cylinder wall, which is the best measuring state of the sensor. But is generally limited by the size of the inner diameter to be measured and the size of the sensor, which is difficult to achieve. The method is suitable for measuring occasions with small sensors and large installation space.
The double-sensor cross arrangement is an arrangement mode selected when the installation space of the sensors is insufficient. The principle is shown in fig. 14, when the calibration is carried out, the dotted line is the length of the known ring gauge, the upper arrow and the lower arrow are measured values, and the horizontal vertical length of the L-shaped part can be reversely deduced, so that the calibration can be carried out, and the inner diameter length can be indirectly measured through the geometric relationship when the workpiece is measured. The cross arrangement saves space, has compact structure and is convenient to adjust. The method is suitable for occasions with small installation space.
When the space is further compressed, such as in a movable guide scheme, a device for driving the guide bar is added in an originally narrow space, and then only a single sensor is used. When the measuring sensor is one, a calibration device 12 is needed during measurement, and after a mandril of the calibration device contacts one end of the inner wall of the cylinder, the measuring sensor begins to measure the inner diameter. As shown in the schematic diagrams of a single sensor in fig. 16 and 17, the sensor is mounted on the track in side view and can move left and right along the arrow, and is pushed by the pushing device in top view, and when the push rod contacts the cylinder wall, the sensor on the other side starts to measure. During calibration, the dotted line is the length of the known ring gauge, the right side is a measured value, and the length of the narrow rectangular part on the left side can be reversely deduced, so that the inner diameter length can be indirectly measured during measurement of a workpiece by the calibration. Since the guide means have formed a stable structure with the cylinder wall, there are other contacts which can give large errors in the results of such a precision measurement. Therefore, the pushing device needs to reduce the speed and the pushing force as much as possible on the premise of pushing the sensor and the ejector rod so as to reduce the influence on the balance system of the guide part.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, the present invention is not limited by the foregoing embodiments, and that several changes and modifications can be made without departing from the overall concept of the present invention, which should also be construed as the protection scope of the present invention.
Claims (10)
1. The utility model provides a cylinder jacket internal diameter detection device which characterized in that: it includes a transfer part, a guide part and a measuring part; the shifting part drives the detection probe or the cylinder sleeve to move, and the detection probe is provided with a guide part and a measurement part;
the shifting part comprises a horizontal movement mechanism, a vertical movement mechanism and a rotary movement mechanism which are driven by a power mechanism and drive the detection probe or the cylinder sleeve to do horizontal, vertical and rotary movements;
the guide part comprises at least two guide strips, the axial direction of each guide strip is the same as that of the cylinder sleeve, and the guide strips are tightly attached to the inner wall of the cylinder sleeve during operation;
the measurement section includes: the pushing mechanism is used for adjusting the posture of the cylinder sleeve in the process of tightly attaching the guide strip to the inner wall of the cylinder sleeve, and the measuring sensor is used for measuring the inner diameter of the cylinder sleeve after the guide strip is tightly attached to the inner wall of the cylinder sleeve;
the power mechanism of the transfer part, the pushing mechanism and the measuring sensor during measurement are all controlled by a control system; when the device works, the transfer part extends the detection probe into the cylinder sleeve, and the control system controls the pushing mechanism to adjust the posture of the cylinder until each guide strip is tightly attached to the inner wall of the cylinder sleeve; when the guide strip is tightly attached to the inner wall of the cylinder sleeve, the control system controls the measuring sensors to work, and at least one measuring sensor arranged on the detection probe is used for measuring the inner diameter of the cylinder sleeve.
2. The cylinder liner inner diameter detection device according to claim 1, characterized in that: the position relationship among the horizontal movement mechanism, the vertical movement mechanism and the rotary movement mechanism is one of the following three types:
a) the horizontal movement mechanism is fixed on the workbench, the vertical movement mechanism is arranged on the horizontal movement mechanism in a sliding manner, the rotary movement mechanism is arranged on the vertical movement mechanism in a sliding manner, and the detection probe is fixed below the rotary movement mechanism;
b) the horizontal movement mechanism is fixed on the working table surface, the rotary movement mechanism is arranged on the horizontal movement mechanism in a sliding manner, and a cylinder sleeve is arranged on the rotary movement mechanism; the vertical movement mechanism is fixed on the workbench, and the detection probe is arranged on the vertical movement mechanism in a sliding manner;
c) the rotary motion mechanism is fixed on the workbench, and a cylinder sleeve is arranged on the rotary motion mechanism; the horizontal movement mechanism is fixed on the workbench, the vertical movement mechanism is arranged on the horizontal movement mechanism in a sliding mode, and the detection probe is arranged on the vertical movement mechanism in a sliding mode.
3. The cylinder liner inner diameter detection device according to claim 1, characterized in that: the detection probe comprises a connecting piece and a fixing plate, the guide part comprises three or four fixed guide strips, and the fixed guide strips are in a common circle and are fixed on the fixing plate.
4. The cylinder liner inner diameter detection device according to claim 1, characterized in that: the detection probe comprises a connecting piece and a fixing plate, the guide part comprises two fixed guide strips, the two fixed guide strips are arranged on the fixing plate, and when the two guide strips are tightly attached to the inner wall of the cylinder sleeve, an arc determined between the two fixed guide strips is a minor arc of the inner diameter of the cylinder sleeve.
5. The cylinder liner inner diameter detection device according to claim 1, characterized in that: the detection probe comprises a connecting piece and a fixing plate, and the guide part comprises two fixed guide strips and a movable guide strip; the fixed guide strip is fixed on the fixed plate, and the movable guide strip is driven by the guide strip driving device and slides on the fixed plate in the radial direction; when the movable guide strip and the fixed guide strip are tightly attached to the inner wall of the cylinder sleeve, the movable guide strip, the fixed guide strip and the cylinder sleeve are in a common circle.
6. The cylinder liner inner diameter detection device according to claim 1, characterized in that: the pushing mechanism comprises at least three independently controlled pushing cylinders, all the pushing cylinders are vertically distributed along the axial direction of the cylinder sleeve, and all the pushing cylinders are fixed on a workbench on the outer side of the cylinder sleeve.
7. The cylinder liner inner diameter detection device according to claim 1, characterized in that: the pushing mechanism comprises at least three independently controlled pushing cylinders, all the pushing cylinders are vertically distributed along the axial direction of the cylinder sleeve, all the pushing cylinders are fixed on a support arm of the detection probe of the transfer part, and the support arm and the detection probe move synchronously.
8. The cylinder liner inner diameter detection device according to claim 1, characterized in that: the pushing mechanism is composed of a pushing cylinder which is controlled independently, and the pushing cylinder is arranged on a fixing plate of the detection probe; and the pushing cylinder is arranged opposite to the guide strip.
9. The cylinder liner inner diameter detection device according to claim 1, characterized in that: the measuring sensors comprise two measuring sensors which are arranged in a cross way or in a reverse way.
10. The cylinder liner inner diameter detection device according to claim 1, characterized in that: the measuring sensor is one, a calibration device is needed during measurement, after an ejector rod of the calibration device contacts one end of the inner wall of the air cylinder, the measuring sensor starts to measure the inner diameter, and the calibration device is connected with the control system.
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| CN107478167A (en) * | 2017-08-04 | 2017-12-15 | 江苏科技大学 | A kind of inner diameter of cylinder sleeve measurement apparatus and measuring method |
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