CN114877853B - Cylinder hole reticulate pattern parameter measuring device - Google Patents
Cylinder hole reticulate pattern parameter measuring device Download PDFInfo
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- CN114877853B CN114877853B CN202210421867.9A CN202210421867A CN114877853B CN 114877853 B CN114877853 B CN 114877853B CN 202210421867 A CN202210421867 A CN 202210421867A CN 114877853 B CN114877853 B CN 114877853B
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- cylinder
- cylinder hole
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- roller
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/30—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring roughness or irregularity of surfaces
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The invention discloses a cylinder hole reticulate pattern parameter measuring device which comprises a base, a scale disc, a guide rail bracket, a roughness measuring instrument, a guide cylinder and a roller assembly, wherein the scale disc is fixed at the upper end of the base, and the base can extend into a cylinder hole; the guide rail bracket is vertically arranged above the scale disc, and the roughness measuring instrument is arranged on the guide rail bracket and can adjust the position up and down; the base is internally provided with a through groove, and the through groove forms a first notch and a second notch which are 180 degrees away from each other on the peripheral walls of the two sides of the base; the sensor measuring rod of the roughness measuring instrument stretches into the through groove, and the detection end faces the wall of the cylinder hole through the first notch; the roller assembly is arranged in the through groove and can drive the roller to contact with the wall of the cylinder hole through the second notch; the guide cylinder is provided with two and sets up in the both sides of first notch respectively, and the guide cylinder contacts with the jar pore wall. By adopting the invention, the clamping and positioning can be rapidly completed, the reticulate pattern parameter measurement of each part of the cylinder hole is realized, the operation is convenient, the measurement accuracy is effectively ensured, and the cylinder hole is not scratched.
Description
Technical Field
The invention belongs to the technical field of roughness measurement, and particularly relates to a cylinder hole reticulate pattern parameter measurement device.
Background
The cylinder bore reticulation parameters of the engine are measured, typically on a general equipment roughness measuring instrument platform, or using a portable roughness measuring instrument specific tooling. The two measuring tools use a roughness measuring instrument, a measuring needle is attached to the surface of the wall of the cylinder hole in the working process, the measuring needle is required to be perpendicular to the wall of the cylinder hole (an included angle B=90° as shown in fig. 1), the shape with a certain length is sampled, and whether the reticulate pattern parameter of the cylinder hole meets the requirement of a product drawing is evaluated. The reticulation parameters of the engine cylinder holes influence the engine performance, such as inaccurate measurement or scratching of the cylinder holes in the measurement process, and the result can influence the lubrication quality, the oil consumption and the reduction of the service life of the engine.
1. When cylinder bore texture parameters are measured on a universal equipment roughness measuring instrument platform, the following disadvantages generally occur:
(1) The probe of the roughness measuring instrument needs to be operated to find the lowest point in each measurement, the number of required sampling points of a measured workpiece is large, and the operation is complex. If the lowest point is not found, an included angle A not equal to 90 degrees is easy to form (as shown in figure 1), the measuring needle is not perpendicular to the hole wall, and the output measuring data is inaccurate;
(2) The workpiece to be measured only keeps one gesture under the influence of the limitation of the tool and the shape of the workpiece, the workpiece to be measured is moved for measurement, and the measurement is generally carried out only in a single direction on the circumference, so that the sampling is insufficient;
2. when cylinder hole reticulation parameters are measured by using a special tool of the portable roughness measuring instrument, the defects are generated:
(1) The portable special tool for the roughness measuring instrument is easy to scratch a cylinder hole and collide with a measuring needle;
(2) The special fixture of the portable roughness measuring instrument is positioned inaccurately in the cylinder hole, the measuring needle is not perpendicular to the hole wall, an included angle A not equal to 90 degrees or an included angle C not equal to 90 degrees is formed (as shown in figure 1), and the output measuring data is inaccurate;
(3) The special fixture for the portable roughness measuring instrument is provided with a clamping mechanism, and the clamping point is easy to prop up or scratch a cylinder hole; if no clamping mechanism exists, the measuring instrument shakes in the measuring process, the measurement is interfered, and the accuracy is affected.
Disclosure of Invention
The invention aims to provide a cylinder hole reticulate pattern parameter measuring device which can rapidly finish clamping and positioning, realize reticulate pattern parameter measurement of each part of a cylinder hole, is convenient to operate, effectively ensures measurement accuracy and does not scratch the cylinder hole.
In order to achieve the above object, the technical scheme adopted by the embodiment of the invention is as follows:
the cylinder hole reticulate pattern parameter measuring device comprises a base, a scale disc, a guide rail bracket, a roughness measuring instrument, a guide cylinder and a roller assembly, wherein the scale disc is fixed at the upper end of the base, the diameter of the scale disc is larger than the aperture of a cylinder hole, and the base can extend into the cylinder hole; the guide rail bracket is vertically arranged above the scale disc, and the roughness measuring instrument is arranged on the guide rail bracket and can adjust the position up and down; a through groove is formed in the base, and a first notch and a second notch which are 180 degrees away from each other are formed in the peripheral walls of the two sides of the base; the roughness measuring instrument is provided with a sensor measuring rod which extends into the through groove, and the detection end of the sensor measuring rod faces the wall of the cylinder hole through the first notch; the roller assembly is arranged in the through groove and can drive the roller to contact with the wall of the cylinder hole through the second notch; the guide cylinder is provided with two guide cylinders and is respectively arranged at two sides of the first notch, and the guide cylinder can be contacted with the cylinder hole wall under the reaction force when the roller is contacted with the cylinder hole wall.
As a preferred embodiment of the invention, two guide cylinders are parallel to each other and perpendicular to the scale disk, the two guide cylinders being arranged at the same height.
As a preferable scheme of the invention, the moving direction of the roller assembly driving roller is perpendicular to the perpendicular planes of the two guide cylinders.
As a preferred embodiment of the present invention, the detection end of the sensor lever is oriented perpendicularly to the perpendicular plane of the two guide cylinders and is located at the perpendicular center of the spaced-apart regions of the two guide cylinders.
As a preferred embodiment of the present invention, the guide cylinder is rotatably connected to the base.
As a preferable scheme of the invention, the guide cylinder and the roller are made of copper.
As a preferable scheme of the invention, the guide rail bracket is provided with a guide rail hole, the guide rail hole is perpendicular to the scale disc, the back of the roughness measuring instrument is fixedly provided with a bolt, and the bolt passes through the guide rail hole and is connected with the locking nut.
As a preferable scheme of the invention, the lower end of the base is connected with an end cover, and the edge of the end cover is provided with a guide inclined plane.
As a preferred embodiment of the present invention, the roughness measuring instrument is a contact type roughness measuring instrument or a non-contact type roughness measuring instrument.
As a preferable scheme of the invention, the roller assembly comprises a cylinder, a roller support, rollers, roller pin shafts and guide blocks, wherein the cylinder is fixed in the through groove and is horizontally arranged, a piston rod of the cylinder is fixedly connected with the roller support, the rollers are rotatably connected to the roller support through the roller pin shafts, and the guide blocks are fixed in the through groove and are in sliding connection with the piston rod of the cylinder.
Compared with the prior art, the cylinder hole reticulate pattern parameter measuring device has the beneficial effects that:
according to the cylinder hole reticulate pattern parameter measuring device, the roller and the two guide cylinders are used as supporting points of the whole device, in the clamping process, the roller and the cylinder hole wall are in rolling friction line contact, so that the clamping stagnation can be prevented from scratching the cylinder hole wall, the device deflects and self-positions due to the reaction force when the roller and the cylinder hole wall are propped against each other, and the two guide cylinders are tightly attached to the cylinder hole wall until the travel of the roller reaches the maximum, so that the device has a good centering and positioning effect; meanwhile, the height position of the roughness measuring instrument is adjusted through the guide rail support, each sampling point in the height direction of the cylinder hole wall can be measured, the angle is placed through the scale disc adjusting device, each sampling point in the circumferential direction of the cylinder hole wall can be measured, the whole cylinder hole can be covered by the sampling points, and the more the sampling points at different positions, the more the evaluation results are. Therefore, the cylinder hole reticulate pattern parameter measuring device can rapidly finish clamping and positioning, can better measure reticulate pattern parameters of all parts of the cylinder hole of the measured workpiece by using the roughness measuring instrument, is convenient to operate, and can effectively ensure the measurement accuracy without scratching the cylinder hole.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
FIG. 1 is a schematic illustration of a prior art roughness meter measurement;
FIG. 2 is a schematic structural diagram of a cylinder hole reticulate pattern parameter measurement device according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of the cylinder bore texture parameter measurement device as installed in the cylinder bore;
FIG. 4 is a schematic view of the cylinder bore texture parameter measurement apparatus in a non-operating state;
fig. 5 is a schematic view of the cylinder bore texture parameter measuring device in an operating state.
The marks in the figure:
1. the base, 11, the through groove, 12, the first notch, 13 and the second notch; 2. a scale disc; 3. the guide rail bracket 31, the guide rail hole 32, the bolt 33 and the lock nut; 4. the roughness measuring instrument, 41, the sensor measuring rod, 42 and the detecting end; 5. a guide cylinder; 6. the device comprises a roller assembly, 61, a cylinder, 62, a roller bracket, 63, a roller, 64, a roller pin, 65 and a guide block; 7. cylinder hole, 71, cylinder hole wall; 8. end cap, 81, guiding slope.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. It should be understood that the terms "upper", "lower", etc. are used in the present invention to describe various information, but the information should not be limited to these terms, which are used only to distinguish the same type of information from each other. For example, the "upper" information may also be referred to as "lower" information, and similarly, the "lower" information may also be referred to as "upper" information, without departing from the scope of the invention.
As shown in fig. 1 to 5, the cylinder hole reticulation parameter measuring device provided by the embodiment of the invention comprises a base 1, a scale disc 2, a guide rail bracket 3, a roughness measuring instrument 4, a guide cylinder 5 and a roller assembly 6, wherein the scale disc 2 is fixed at the upper end of the base 1, the diameter of the scale disc 2 is larger than the diameter of a cylinder hole 7, and the base 1 can extend into the cylinder hole 7; the guide rail bracket 3 is vertically arranged above the scale disc 2, and the roughness measuring instrument 4 is arranged on the guide rail bracket 3 and can adjust the position up and down; a through groove 11 is arranged in the base 1, and a first notch 12 and a second notch 13 which are 180 degrees away from each other are formed in the peripheral walls of the two sides of the base 1 by the through groove 11; the roughness measuring instrument 4 is provided with a sensor measuring rod 41, the sensor measuring rod 41 extends into the through groove 11, and a detection end 42 of the sensor measuring rod 41 faces to the cylinder hole wall 71 through the first notch 12; the roller assembly 6 is arranged in the through groove 11, and the roller assembly 6 can drive the roller 63 to contact with the cylinder hole wall 71 through the second notch 13; the guide cylinders 5 are provided with two and are respectively arranged at two sides of the first notch 12, and the guide cylinders 5 can be contacted with the cylinder hole wall 71 under the reaction force when the roller 63 is contacted with the cylinder hole wall 71.
Therefore, according to the cylinder hole reticulate pattern parameter measuring device provided by the invention, the roller 63 and the two guide cylinders 5 are used as supporting points of the whole device, in the clamping process, the roller 63 and the cylinder hole wall 71 are in rolling friction line contact, the cylinder hole wall 71 can be prevented from being scratched by clamping, the device deflects and self-positions due to the reaction force when the roller 63 is propped against the cylinder hole wall 71, and the two guide cylinders 5 are tightly attached to the cylinder hole wall 71 until the stroke of the roller 63 reaches the maximum, so that the device has a good centering and positioning effect; meanwhile, the height position of the roughness measuring instrument 4 is adjusted through the guide rail bracket 3, each sampling point in the height direction of the cylinder hole wall 71 can be measured, the angle is placed through the scale disc 2 adjusting device, each sampling point in the circumferential direction of the cylinder hole wall 71 can be measured, and then the sampling points can cover the whole cylinder hole 7, and the more sampling points at different positions, the more the evaluation results are, the more accurate. Therefore, the cylinder hole reticulate pattern parameter measuring device can quickly finish clamping and positioning, can better measure reticulate pattern parameters of all parts of the cylinder hole 7 of the measured workpiece by using the roughness measuring instrument 4, is convenient to operate, and can effectively ensure the measurement accuracy without scratching the cylinder hole 7.
Illustratively, two of said guiding cylinders 5 are parallel to each other and perpendicular to said scale disk 2, both of said guiding cylinders 5 being arranged at the same height; the moving direction of the driving roller 63 of the roller assembly 6 is perpendicular to the vertical planes of the two guide cylinders 5; the detection end 42 of the sensor lever 41 is oriented perpendicularly to the vertical plane of the two guide cylinders 5 and is located on the vertical center of the spaced-apart areas of the two guide cylinders 5. By means of the design, the two guide cylinders 5 and the cylinder hole wall 71 can form line contact, positioning is more reliable, meanwhile, the detection end 42 of the sensor measuring rod 41 is perpendicular to the cylinder hole wall 71, displacement sampling (parallel to the two guide cylinders 5) along the bus of the cylinder hole 7 is effectively achieved, and accuracy of measured data is ensured.
Illustratively, the guide cylinder 5 is rotatably connected to the base 1. By such a design, the guide cylinder 5 and the cylinder bore wall 71 can be brought into rolling friction line contact, and further, the cylinder bore wall 71 is prevented from being scratched by the sticking.
Illustratively, the guide cylinder 5 and roller 63 are made of a softer copper material than the cast iron cylinder bore wall 71 so that the device is not easily scratched by the cylinder bore wall 71 when placed in the cylinder bore 7.
For example, in order to facilitate the adjustment of the roughness measuring instrument 4 in the height direction, the guide rail bracket 3 is provided with a guide rail hole 31, the guide rail hole 31 is perpendicular to the scale disc 2, a bolt 32 is fixedly arranged at the back of the roughness measuring instrument 4, and the bolt 32 passes through the guide rail hole 31 and is connected with a locking nut 33.
Illustratively, the lower end of the base 1 is connected with an end cover 8, and a guiding inclined plane 81 is arranged at the edge of the end cover 8. The end cover 8 is arranged to protect the sensor lever 41 and the roller assembly 6 in the through groove 11 from being collided by foreign objects, and the guide inclined surface 81 can prevent the lower end edge of the base 1 from scratching the cylinder hole wall 71 during the process of loading the device into the cylinder hole 7.
The roughness measuring device 4 is an existing contact roughness measuring device or a contactless roughness measuring device. Among them, the contact roughness measuring instrument preferably employs a measuring instrument in which the sensor lever 41 can be moved bi-directionally so that the stylus on the sensor lever 41 can be moved into contact with the cylinder bore wall 71.
For example, in order to make the rolling friction line contact between the roller 63 and the cylinder hole wall 71 more stable and reliable, the roller assembly 6 includes a cylinder 61, a roller bracket 62, a roller 63, a roller pin 64 and a guide block 65, where the cylinder 61 is fixed in the through slot 11 and horizontally arranged, a piston rod of the cylinder 61 is fixedly connected with the roller bracket 62, the roller 63 is rotatably connected to the roller bracket 62 through the roller pin 64, and the guide block 65 is fixed in the through slot 11 and slidably connected with the piston rod of the cylinder 61.
When the cylinder hole reticulate pattern parameter measuring device provided by the invention is used for measuring, the specific process is as follows:
firstly, selecting a depth value of a cylinder hole 7 to be measured in a guide rail bracket 3, screwing a locking nut 33, fixing a roughness measuring instrument 4, and determining the height of a sampling point of the cylinder hole 7 measured by a measuring needle;
secondly, placing the device in the cylinder hole 7 along the axis of the cylinder hole 7, and attaching the scale disc 2 on the end surface of the cylinder hole 7 to limit 1 degree of freedom of up-and-down movement along the axis of the cylinder hole 7; at this time, the detection end 42 of the roughness measuring instrument 4 is in a non-working state, is retracted into the through groove 11 and cannot protrude out of the two guide cylinders 5, and the two guide cylinders 5 protect the detection end 42 from being bumped during placement; the piston rod of the cylinder 61 is in a retracted state, retracted into the through groove 11, as shown in fig. 4.
Thirdly, after the scale disc 2 is attached to the end face of the cylinder hole 7, the rotating device adjusts and places, the sampling point angle in the circumferential direction of the cylinder hole 7 is selected, the two guide cylinders 5 are attached to the cylinder hole wall 71 as much as possible, the device is initially positioned, and 1 degree of freedom in the rotation direction of the axis of the cylinder hole 7 is limited.
Third, the cylinder 61 is started to push the roller support 62, so that the roller 63 translates along the guide block 65 until the roller support abuts against the cylinder hole wall 71, the cylinder hole wall 71 generates a reaction force to the roller 63, the device generates relative rolling displacement along the cylinder hole wall 71 due to unbalanced stress, when the extending stroke of the roller 63 reaches the maximum, the device is stressed and balanced (namely, the roller 63 is stressed by the reaction force of the cylinder hole wall 71 and passes through the circle center of the cylinder hole 7), at the moment, the two guide cylinders 5 abut against the cylinder hole wall 71, the other 4 degrees of freedom of the device are limited, and final positioning and fixing of the device are completed, as shown in fig. 5.
Fourth, the roughness measuring instrument 4 is started, if the roughness measuring instrument 4 is a non-contact roughness measuring instrument 4, the detection end 42 thereof is vertically close to the cylinder hole wall 71, if the roughness measuring instrument 4 is a contact roughness measuring instrument 4, the detection end 42 (i.e. the contact pin) thereof is vertically abutted against the cylinder hole wall 71, then the sensor measuring rod 41 is driven to translate along the generatrix of the cylinder hole 7 (i.e. move parallel to the two guide cylinders 5), the reticulation parameters of the cylinder hole 7 are measured, the measurement result is output, and after the measurement is finished, the detection end 42 is retracted into the through groove 11.
Fifth, cylinder 61 is closed and roller bracket 62 is pulled to translate roller 63 along guide block 65 away from cylinder bore wall 71 until it is retracted into channel 11, as shown in FIG. 4.
Sixth, the device is pulled out of the cylinder hole 7 along the axis of the cylinder hole 7, and the process ends.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (10)
1. The cylinder hole reticulate pattern parameter measuring device is characterized by comprising a base, a scale disc, a guide rail bracket, a roughness measuring instrument, a guide cylinder and a roller assembly, wherein the scale disc is fixed at the upper end of the base, the diameter of the scale disc is larger than the aperture of a cylinder hole, and the base can extend into the cylinder hole; the guide rail bracket is vertically arranged above the scale disc, and the roughness measuring instrument is arranged on the guide rail bracket and can adjust the position up and down; a through groove is formed in the base, and a first notch and a second notch which are 180 degrees away from each other are formed in the peripheral walls of the two sides of the base; the roughness measuring instrument is provided with a sensor measuring rod which extends into the through groove, and the detection end of the sensor measuring rod faces the wall of the cylinder hole through the first notch; the roller assembly is arranged in the through groove and can drive the roller to contact with the wall of the cylinder hole through the second notch; the guide cylinder is provided with two guide cylinders and is respectively arranged at two sides of the first notch, and the guide cylinder can be contacted with the cylinder hole wall under the reaction force when the roller is contacted with the cylinder hole wall.
2. A cylinder bore texture parameter measuring device as claimed in claim 1 wherein two of said guide cylinders are parallel to each other and perpendicular to said scale disk, the two guide cylinders being arranged at the same height.
3. A cylinder bore texture parameter measuring device as claimed in claim 2 wherein the direction of movement of the roller assembly drive roller is perpendicular to the vertical plane of the two guide cylinders.
4. A cylinder bore texture parameter measuring device as claimed in claim 2 wherein the sensing end of the sensor rod is oriented perpendicularly to the perpendicular plane of the two guide cylinders and is located at the vertical centre of the spaced-apart regions of the two guide cylinders.
5. A cylinder bore texture parameter measuring device as claimed in claim 2 wherein the guide cylinder is rotatably connected to the base.
6. The cylinder bore texture parameter measurement device of claim 1, wherein the guide cylinder and roller are copper.
7. The cylinder hole reticulation parameter measuring device according to claim 1, wherein a guide rail hole is formed in the guide rail support, the guide rail hole is perpendicular to the scale disc, a bolt is fixedly arranged on the back of the roughness measuring instrument, and the bolt penetrates through the guide rail hole to be connected with a locking nut.
8. The cylinder hole reticulation parameter measuring device according to claim 1, wherein the lower end of the base is connected with an end cover, and the edge of the end cover is provided with a guiding inclined plane.
9. The cylinder bore texture parameter measurement device of claim 1, wherein the roughness gauge is a contact roughness gauge or a non-contact roughness gauge.
10. The cylinder hole reticulation parameter measurement device according to any one of claims 1 to 9, wherein the roller assembly comprises a cylinder, a roller support, a roller pin and a guide block, the cylinder is fixed in the through groove and is horizontally arranged, a piston rod of the cylinder is fixedly connected with the roller support, the roller is rotatably connected with the roller support through the roller pin, and the guide block is fixed in the through groove and is in sliding connection with the piston rod of the cylinder.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210421867.9A CN114877853B (en) | 2022-04-21 | 2022-04-21 | Cylinder hole reticulate pattern parameter measuring device |
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| CN202210421867.9A CN114877853B (en) | 2022-04-21 | 2022-04-21 | Cylinder hole reticulate pattern parameter measuring device |
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| CN114877853B true CN114877853B (en) | 2023-07-07 |
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