CN113188400A - Measuring device for measuring size of thrust surface of cylinder body - Google Patents

Measuring device for measuring size of thrust surface of cylinder body Download PDF

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Publication number
CN113188400A
CN113188400A CN202110415792.9A CN202110415792A CN113188400A CN 113188400 A CN113188400 A CN 113188400A CN 202110415792 A CN202110415792 A CN 202110415792A CN 113188400 A CN113188400 A CN 113188400A
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CN
China
Prior art keywords
measuring
parallelogram
measuring device
thrust surface
bar linkage
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Granted
Application number
CN202110415792.9A
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Chinese (zh)
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CN113188400B (en
Inventor
薛飞
陶涌杰
王康辉
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SAIC Volkswagen Automotive Co Ltd
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SAIC Volkswagen Automotive Co Ltd
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Priority to CN202110415792.9A priority Critical patent/CN113188400B/en
Publication of CN113188400A publication Critical patent/CN113188400A/en
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Publication of CN113188400B publication Critical patent/CN113188400B/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/003Measuring of motor parts
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/0002Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/0002Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
    • G01B5/0004Supports
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/02Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness

Abstract

The invention discloses a measuring device for measuring the size of a thrust surface of a cylinder body, which comprises: the lifting platform can move relative to the base in the height direction; the moving plate is provided with a measuring station for placing the cylinder body to be measured and can move relative to the base in a first linear direction; a portal frame vertically arranged on the base; the gauge stand shaft is transversely arranged on the portal frame; the first parallelogram four-bar linkage mechanism and the second parallelogram four-bar linkage mechanism are respectively connected with the meter frame shaft, and a spring guider is connected between the first parallelogram four-bar linkage mechanism and the second parallelogram four-bar linkage mechanism; the first spring is arranged between the first parallelogram four-bar linkage mechanism and the second parallelogram four-bar linkage mechanism in a compressed mode through the spring guide device, so that the inner side of the lower end of the first parallelogram four-bar linkage mechanism and the inner side of the lower end of the second parallelogram four-bar linkage mechanism clamp the thrust surface of the cylinder body to be measured, and measurement is conducted.

Description

Measuring device for measuring size of thrust surface of cylinder body
Technical Field
The invention relates to a measuring device, in particular to a cylinder body size measuring device.
Background
As is well known, the cylinder block is the core component inside an automobile engine, and in the prior art, the block thrust surface is the axial positioning reference of the crankshaft during the engine assembly process, which generally determines the axial position of the crankshaft in the engine. If the machining size of the thrust surface of the cylinder body is out of tolerance, very serious consequences can be caused, such as: after the crankshaft is installed, the crankshaft and the end face of the large hole of the connecting rod are scraped, so that the noise of the engine is increased, and if the noise is serious, the engine can be seized. It can be seen that in order to ensure the normal operation of an automobile engine, the size of the thrust surface of the cylinder block needs to be strictly controlled, which is one of the important sizes of the engine.
In the existing production process, the cylinder thrust surface is usually machined by respectively milling with an end mill on an AF240 special machine. Due to the high requirement on the machining precision in the machining process, the change amount of the length of the cutter after each time of cutter replacement has a large out-of-tolerance risk compared with the machining size. Meanwhile, the size of the thrust surface can be changed to a certain extent along with the abrasion of the cutter in the machining process. If the dimension of the thrust surface of the cylinder body is not measured by a detection tool, the product quality is difficult to ensure, and the engine cylinder body is very easy to scrap due to the fact that the thrust surface is out of tolerance.
Therefore, in order to solve the above problems in the prior art, some researchers have performed related optimization designs, and have obtained the following improvements: 1. and adding a MAPOSS automatic on-line checking fixture in the machine tool to measure the size of the thrust surface of each cylinder body after machining. 2. And measuring the size of the thrust surface of the cylinder body by using a three-coordinate measuring instrument.
However, both of the above two improvements have certain defects, for example, in the above improvement 1, the automatic online inspection device of the MAPOSS is added in the machine tool, and the measurement station equipment needs to be added by modifying the equipment, so that the technical complexity is high, the cost investment is large, the preparation period is long, and no space is reserved for the measurement station in the workshop layout. The scheme can only carry out measurement after a plurality of working procedures of machining the thrust surface by a special machine, a large buffer memory is easy to exist between a machining station and a measuring station, when the out-of-tolerance is found through measurement, a buffer memory part can be scrapped, and the risk of batch waste still exists.
Correspondingly, the scheme of measuring the size of the thrust surface of the cylinder by adopting the three-coordinate measuring instrument has the advantages that although the measurement result is very accurate, the measurement time is long, the machine needs to be stopped for sending and measuring, the output is influenced, and the production and the manufacture are not facilitated.
Based on the above, the invention is expected to obtain a measuring device for measuring the size of the thrust surface of the cylinder body, which is different from the improvement scheme in the prior art, the measuring device can quickly and accurately measure the size of the thrust surface of the cylinder body through reasonable structural design, and can assist an operator to observe the size of the thrust surface of the cylinder body, so that a cutter head can be strictly controlled on the size of the thrust surface of the cylinder body, and the production quality is ensured.
The measuring device has the advantages of simple structure, convenience in maintenance, high reliability and convenience in use, can be used for measuring the sizes of the thrust surfaces of all cylinder bodies, and has very good popularization prospect and application value.
Disclosure of Invention
One of the purposes of the invention is to provide a measuring device for measuring the size of a thrust surface of a cylinder body, which can quickly and accurately measure the size of the thrust surface of the cylinder body through reasonable structural design, can assist an operator to observe the size of the thrust surface of the cylinder body, further realize strict control of the size of a cutter head on the thrust surface of the cylinder body, and ensure production quality.
The measuring device has the advantages of simple structure, convenience in maintenance, high reliability and convenience in use, can be used for measuring the sizes of the thrust surfaces of all cylinder bodies, and has very good popularization prospect and application value.
In order to achieve the above object, the present invention provides a measuring device for measuring a dimension of a thrust surface of a cylinder block, comprising:
a base;
a lift table provided on the base, the lift table being provided to be movable in a height direction relative to the base;
the moving plate is arranged to move relative to the base in a first linear direction, and a measuring station for placing a cylinder to be measured is arranged on the moving plate;
the portal frame is vertically arranged on the base;
the gauge stand shaft is transversely arranged on the portal frame;
the first parallelogram four-bar linkage mechanism and the second parallelogram four-bar linkage mechanism are respectively connected with the meter frame shaft, and a spring guider is connected between the first parallelogram four-bar linkage mechanism and the second parallelogram four-bar linkage mechanism;
the first spring is arranged between the first parallelogram four-bar linkage mechanism and the second parallelogram four-bar linkage mechanism in a compressed mode through the spring guider so that the inner side of the lower end of the first parallelogram four-bar linkage mechanism and the inner side of the lower end of the second parallelogram four-bar linkage mechanism clamp the thrust surface of the cylinder body to be tested;
the measuring rod is connected with the upper end of the first parallelogram four-bar linkage;
the first dial indicator is connected with the head end of the measuring rod;
and the second dial indicator is connected with the upper end of the second parallelogram four-bar linkage mechanism and is connected with the tail end of the measuring rod.
Further, in the measuring device for measuring the dimension of the thrust surface of the cylinder block, the base and the lifting table are provided with guide rails, so that the moving plate can move relative to the base in the first linear direction.
Further, in the measuring device for measuring the size of the thrust surface of the cylinder body, a pre-guide pin is arranged on the moving plate to guide the cylinder body to be measured in the process of placing the cylinder body to be measured at the measuring station.
Further, in the measuring device for measuring the size of the thrust surface of the cylinder body, the gauge stand shaft is provided with a step surface, and a second spring for applying axial pretightening force is arranged between the step surface and the portal frame.
Further, in the measuring device for measuring the size of the thrust surface of the cylinder body, the end part of the meter frame shaft is provided with a handle which drives the meter frame shaft to rotate around the axis of the meter frame shaft.
Further, in the measuring device for measuring the size of the thrust surface of the cylinder body, a blocking pin is vertically arranged on the lifting platform to block the moving plate from further linear movement.
Further, in the measuring device for measuring the dimension of the thrust surface of the cylinder block according to the present invention, the lower surface of the lifting table is further provided with a roller, and the measuring device further includes:
the wedge guide block is arranged on the base body;
one end of the lifting connecting rod is pivoted with the base body, and the other end of the lifting connecting rod is pivoted with the wedge guide block;
a lifting handle pivotally connected to the lifting link;
the lifting handle drives the lifting connecting rod to act by rotating around the pivot shaft of the lifting handle, so that the wedge guide block linearly moves on the base body, and the lifting platform is driven to lift up and down in the height direction by rolling of the roller along the inclined surface of the wedge guide block.
Furthermore, in the measuring device for measuring the size of the thrust surface of the cylinder body, a jacking guide rod is arranged between the lifting table and the base body.
Further, in the measuring device for measuring the dimension of the thrust surface of the cylinder body, the portal frame is arranged on the base body through the shaft seat.
Further, in the measuring apparatus for measuring the dimension of the thrust surface of the cylinder block according to the present invention, the side surface of the moving plate has a wedge surface, and the measuring apparatus further includes:
the self-locking handle seat is arranged on the lifting platform;
the self-locking handle is arranged on the self-locking handle seat;
the wedge-shaped movable stop block is arranged in a hole of the self-locking handle seat and is pivoted with the self-locking handle, and the wedge-shaped movable stop block is provided with a wedge-shaped surface matched with the wedge-shaped surface on the side surface of the movable plate;
the self-locking handle rotates around a pivot to push the wedge-shaped movable stop block to pass through the hole of the self-locking handle seat to move in a second linear direction so as to lock the moving plate to move in the first linear direction, and the second linear direction is perpendicular to the first linear direction.
Compared with the prior art, the measuring device for measuring the size of the thrust surface of the cylinder body has the advantages and beneficial effects as follows:
the measuring device disclosed by the invention can be used for quickly and accurately measuring the size of the thrust surface of the cylinder body through reasonable structural design, and can assist an operator to observe the size of the thrust surface of the cylinder body, so that the cutter head can be strictly controlled on the size of the thrust surface of the cylinder body, and the production quality is ensured.
The measuring device has the advantages of simple structure, convenience in maintenance, high reliability and convenience in use, can be used for measuring the sizes of the thrust surfaces of all cylinder bodies, and has very good popularization prospect and application value.
In the measuring device, the size of the thrust surface of the cylinder body to be measured is converted into external measurement by utilizing the quadrilateral four-bar linkage mechanism, two length sizes can be measured at one time, the measuring precision is high, and the use is convenient. In some preferred embodiments, the invention further utilizes a positioning and locking device of the lever, the wedge and the blocking pin, the positioning effect is good, and the accurate positioning of the cylinder body on the measuring station of the moving plate can be realized.
In addition, in some embodiments, the invention also adopts the cooperation of the lever and the wedge guide block, so that an operator can control the lifting platform to lift, and the lifting platform has good self-locking performance and can also play a labor-saving role.
Drawings
Fig. 1 is a schematic structural diagram of a measuring device for measuring dimensions of a thrust surface of a cylinder block according to an embodiment of the invention from a view angle.
Fig. 2 is a schematic structural diagram of a measuring device for measuring the dimension of a thrust surface of a cylinder block according to an embodiment of the invention from another view angle.
Fig. 3 is a schematic structural diagram of a measuring device for measuring the dimension of a thrust surface of a cylinder block according to the invention, which is used for measuring the dimension of the thrust surface of the cylinder block under one embodiment.
Fig. 4 is a front sectional view of a measuring device for measuring the dimension of a thrust surface of a cylinder body, which is provided with the cylinder body at a moving plate measuring station in one embodiment of the measuring device.
Fig. 5 is a front cross-sectional view of a structure of a measuring device for measuring the dimension of a thrust surface of a cylinder block, wherein a moving plate provided with the cylinder block moves to an elevating platform under one embodiment of the measuring device.
FIG. 6 is a front cross-sectional view of a measuring device for measuring the dimension of a thrust surface of a cylinder block according to an embodiment of the invention.
Fig. 7 is a sectional view a-a of the gantry-to-base connection of the structure shown in fig. 6.
Fig. 8 is a partial enlarged view of the structure shown in fig. 6 at B.
FIG. 9 is a side cross-sectional view schematically showing a measuring device for measuring the dimension of a thrust surface of a cylinder body, which is disclosed by the invention, and the measuring device is used for measuring a middle measuring point of the thrust surface in one embodiment.
FIG. 10 is a side cross-sectional view schematically showing a measuring device for measuring the dimension of a thrust surface of a cylinder body, which is disclosed by the invention, and the measuring device is used for measuring a measuring point on the left side of the thrust surface in one embodiment.
FIG. 11 is a side cross-sectional view schematically showing the structure of a measuring device for measuring the dimension of a thrust surface of a cylinder block, which measures a measuring point on the right side of the thrust surface under one embodiment of the measuring device.
Fig. 12 is a structural side sectional view of a measuring device for measuring the dimension of a thrust surface of a cylinder block, in which an elevating platform in one embodiment of the measuring device is in an initial position.
Fig. 13 is a structural side sectional view of a measuring device for measuring the dimension of a thrust surface of a cylinder block, in which a lifting platform in one embodiment of the measuring device is in a lifting position.
Fig. 14 is a front sectional view schematically showing the structure of the measuring device for measuring the dimension of the thrust surface of the cylinder block, which is disclosed by the invention, in one embodiment.
Fig. 15 is a C-C cross-sectional view of the structure shown in fig. 14.
Fig. 16 is an enlarged view of a portion of the structure shown in fig. 15 at D.
Fig. 17 is a cross-sectional view M-M of the structure shown in fig. 15.
Fig. 18 is a partial enlarged view of the structure shown in fig. 17 at E.
Fig. 19 is a partial enlarged view of the structure shown in fig. 17 at F.
Detailed Description
The measuring device for measuring the dimensions of the thrust surface of a cylinder block according to the present invention will be further explained and illustrated with reference to the drawings and the specific embodiments of the present description, which, however, should not be construed as unduly limiting the technical solution of the present invention.
Fig. 1 is a schematic structural diagram of a measuring device for measuring dimensions of a thrust surface of a cylinder block according to an embodiment of the invention from a view angle.
Fig. 2 is a schematic structural diagram of a measuring device for measuring the dimension of a thrust surface of a cylinder block according to an embodiment of the invention from another view angle.
As shown in fig. 1 and 2, in the present embodiment, the measuring device for measuring the dimension of the thrust surface of the cylinder block according to the present invention may include: the device comprises a base 1, a lifting platform 2, a moving plate 3, a portal frame 4, a meter frame shaft 5, a first parallelogram four-bar linkage 6, a second parallelogram four-bar linkage 7, a first spring 8, a measuring rod 9, a first dial indicator 10 and a second dial indicator 11.
In the present invention, the lifting platform 2 is disposed on the base 1 and can move in the height direction relative to the base 1; accordingly, the moving plate 3 of the present invention is configured to be movable in a first linear direction relative to the base 1, and the moving plate 3 has a measuring station for placing a cylinder 12 (shown in fig. 3) to be measured thereon.
In the present embodiment, the base 1 and the lift table 2 of the measuring apparatus according to the present invention are each provided with a guide rail 13, and the moving plate 3 is movable in the first linear direction with respect to the base 1 by the guide rails 13. In addition, as can be seen from a careful observation of the moving plate 3 in the measuring device of the present invention, in the present embodiment, the moving plate 3 of the present invention may further be provided with a pre-guiding pin 301 for guiding the cylinder 12 to be measured in the process of placing the cylinder 12 to be measured on the measuring station of the moving plate 3.
In the measuring device of the present invention, a stop pin 201 is further vertically arranged on the lifting platform 2 in the measuring device, and the stop pin 201 can be used for stopping further linear movement of the moving plate 3 to realize positioning of the moving plate 3. In addition, in the present embodiment, a lift guide 202 is further disposed between the lift table 2 and the base 1, and the lift guide can be used to lift the lift table 2 in cooperation with the lift table 2.
As can be seen from further reference to fig. 1 and 2, in the embodiment of the present invention, the base 1 is also provided with a vertical gantry 4, the gantry shaft 5 is transversely provided on the gantry 4, and the first parallelogram four-bar linkage 6 and the second parallelogram four-bar linkage 7 are connected to the gantry shaft 5.
In the present embodiment, the second spring 14 is further provided, the table frame shaft 5 is preferably provided with a step surface (not shown), and the second spring 14 may be provided between the step surface of the table frame shaft 5 and the gantry 6 and may apply an axial preload.
Further observing the watch frame shaft 5 of the measuring device of the invention, it can be seen that in the present embodiment, the end of the watch frame shaft 5 of the invention is further provided with a handle 501, and an operator can drive the watch frame shaft 5 to rotate around its own axis through the handle 501.
Accordingly, in the present embodiment, a spring guide 15 (as shown in fig. 8) is connected between the first parallelogram four-bar linkage 6 and the second parallelogram four-bar linkage 7, and the first spring 8 according to the present invention can be compressively disposed between the first parallelogram four-bar linkage 6 and the second parallelogram four-bar linkage 7 through the spring guide 15, so that the inner side of the lower end of the first parallelogram four-bar linkage 6 and the inner side of the lower end of the second parallelogram four-bar linkage 7 hold the thrust surface of the cylinder 12 to be tested.
In addition, in the invention, the upper end of the first parallelogram four-bar linkage 6 is also connected with a measuring rod 9, wherein the head end of the measuring rod 9 is connected with a first dial indicator 10, and the tail end of the measuring rod 9 is connected with a second dial indicator 11. Correspondingly, in the measuring device according to the invention, the second dial indicator 11 is connected not only to the end of the measuring rod 9, but also to the upper end of the second parallelogram four-bar linkage 7.
Fig. 3 is a schematic structural diagram of a measuring device for measuring the dimension of a thrust surface of a cylinder block according to the invention, which is used for measuring the dimension of the thrust surface of the cylinder block under one embodiment.
As shown in fig. 3, in the present embodiment, when the measuring apparatus according to the present invention is used to measure the size of the cylinder thrust surface, the cylinder 12 to be measured is fixedly placed at the measuring station of the moving plate 3, and the inner sides of the lower ends of the first parallelogram four-bar linkage 6 and the second parallelogram four-bar linkage 7 in the measuring apparatus can clamp the thrust surface of the cylinder 12 to be measured, and measure the size of the thrust surface of the cylinder 12 to be measured.
As can be seen by referring to fig. 1, fig. 2 and fig. 3 in combination, in the present invention, the cylinder 12 to be measured can be conveyed by using the moving plate 3 and the lifting platform 2 on the base 1, which can facilitate the transportation process of the cylinder 12 to be measured in the thrust surface measurement process, thereby avoiding the direct transportation of the operator, greatly reducing the labor intensity of the operator, and effectively reducing the risk of collision and injury of the cylinder in the transportation process.
Fig. 4 is a front sectional view of a measuring device for measuring the dimension of a thrust surface of a cylinder body, which is provided with the cylinder body at a moving plate measuring station in one embodiment of the measuring device.
Fig. 5 is a front cross-sectional view of a structure of a measuring device for measuring the dimension of a thrust surface of a cylinder block, wherein a moving plate provided with the cylinder block moves to an elevating platform under one embodiment of the measuring device.
FIG. 6 is a front cross-sectional view of a measuring device for measuring the dimension of a thrust surface of a cylinder block according to an embodiment of the invention.
As shown in fig. 4, in the initial state, the moving plate 3 is located at the right end of the base 1, and the cylinder 12 to be measured can be set at the measuring station of the moving plate 3 under the guiding action of the pre-guiding pin 301, so as to place the cylinder 12 to be measured on the moving plate 3. Referring to fig. 5, it can be seen that the cylinder 12 to be measured can move along with the moving plate 3 in the first linear direction relative to the base 1, and further move to the lifting table 2 on the left side of the base 1, at this time, the blocking pin 201 on the lifting table 2 can block the moving plate 3 from further linear movement, and further, the moving plate 3 can be positioned.
Correspondingly, as shown in fig. 6, after the moving plate 3 is moved and positioned on the lifting table 2, the lifting table 2 can move in the height direction relative to the base 1, the lifting table 2 can drive the cylinder 12 to be tested on the moving plate 3 to move in the height direction from the initial position, and when the lifting table 2 drives the cylinder 12 to be tested to rise to the highest jacking position, the inner sides of the lower ends of the first parallelogram four-bar linkage 6 and the second parallelogram four-bar linkage 7 in the invention can clamp the thrust surface of the cylinder 12 to be tested, thereby realizing accurate measurement of the size of the thrust surface of the cylinder 12 to be tested.
Fig. 7 is a sectional view a-a of the gantry-to-base connection of the structure shown in fig. 6.
As shown in fig. 7, in the present embodiment, the gantry 4 of the present invention can be fixedly erected on the base 1 through the axle seat 16. Of course, in some other embodiments, the gantry 4 may be fixedly erected on the base 1 in other manners.
Fig. 8 is a partial enlarged view of the structure shown in fig. 6 at B.
FIG. 9 is a side cross-sectional view schematically showing a measuring device for measuring the dimension of a thrust surface of a cylinder body, which is disclosed by the invention, and the measuring device is used for measuring a middle measuring point of the thrust surface in one embodiment.
FIG. 10 is a side cross-sectional view schematically showing a measuring device for measuring the dimension of a thrust surface of a cylinder body, which is disclosed by the invention, and the measuring device is used for measuring a measuring point on the left side of the thrust surface in one embodiment.
FIG. 11 is a side cross-sectional view schematically showing the structure of a measuring device for measuring the dimension of a thrust surface of a cylinder block, which measures a measuring point on the right side of the thrust surface under one embodiment of the measuring device.
As shown in fig. 8, in the present embodiment, a spring guide 15 is connected between the first parallelogram four-bar linkage 6 and the second parallelogram four-bar linkage 7, and the first spring 8 according to the present invention can be compressively disposed between the first parallelogram four-bar linkage 6 and the second parallelogram four-bar linkage 7 through the spring guide 15.
In the measuring device of the present invention, the dimensions of the thrust surface of the cylinder 12 to be measured can be converted to external measurements using the first parallelogram four-bar linkage 6 and the second parallelogram four-bar linkage 7.
Correspondingly, as can be seen by referring to fig. 9, fig. 10 and fig. 11 in combination, in this embodiment, an operator can drive the meter rack shaft 5 to rotate around its own axis through the handle 501, the left side of the measuring rod 5 can be measured by the first dial indicator 10 arranged at the head end of the measuring rod 5 through rotating the handle 501 to achieve the purpose of measuring the distance from the thrust surface of the cylinder body to the positioning pin, the right side of the measuring rod 5 can be measured by the second dial indicator 11 fixed at the upper end of the second parallelogram four-bar linkage mechanism 7 to achieve the purpose of measuring the distance from the thrust surface width, and then the accurate measurement of the size of the thrust surface of the cylinder body 12 to be measured is achieved.
Fig. 12 is a structural side sectional view of a measuring device for measuring the dimension of a thrust surface of a cylinder block, in which an elevating platform in one embodiment of the measuring device is in an initial position.
Fig. 13 is a structural side sectional view of a measuring device for measuring the dimension of a thrust surface of a cylinder block, in which a lifting platform in one embodiment of the measuring device is in a lifting position.
As shown in fig. 12 and 13, in the present embodiment, the lifting platform 2 according to the present invention may further include a roller 203 on the lower surface of the lifting platform 2 in addition to the stopper pin 201 and the lift guide 202.
Accordingly, as can be seen by further referring to fig. 1, in the measuring apparatus of the present invention, the apparatus may further include: a cam guide 17, a lift link 18 and a lift handle 19. Wherein, the wedge guide block 17 is arranged on the base body 1; one end of the lifting connecting rod 18 is pivoted with the base body 1, and the other end of the lifting connecting rod is pivoted with the wedge guide block 17; the lift handle 19 is pivotally connected to the lift link 18.
It should be noted that, in the present invention, the rotation of the lifting handle 19 about its pivot drives the lifting link 18 to move, so that the cam guide 17 moves linearly on the base 1, and the roller 203 rolls along the inclined surface of the cam guide 17 to lift the lifting platform 2 up and down in the height direction.
Fig. 14 is a front sectional view schematically showing the structure of the measuring device for measuring the dimension of the thrust surface of the cylinder block, which is disclosed by the invention, in one embodiment.
Fig. 15 is a C-C cross-sectional view of the structure shown in fig. 14.
Fig. 16 is an enlarged view of a portion of the structure shown in fig. 15 at D.
As shown in fig. 14, 15 and 16, and as can be seen by referring to fig. 1 and 2, in the present embodiment, the side surface of the moving plate 3 has a wedge surface, and the measuring device according to the present invention may further include: a self-locking handle seat 20 (shown in fig. 1), a self-locking handle 21 (shown in fig. 1) and a wedge shaped movable stop 22 (shown in fig. 2).
In the measuring device of the invention, a self-locking handle seat 20 is arranged on a lifting platform 2; the self-locking handle 21 is arranged on the self-locking handle seat 20; the wedge-shaped movable stop 22 is arranged in the hole of the self-locking handle seat 20, the wedge-shaped movable stop 22 is pivoted with the self-locking handle 21 and is provided with a wedge-shaped surface matched with the wedge-shaped surface on the side surface of the moving plate 3.
It should be noted that in the measuring device of the present invention, the rotation of the self-locking handle 21 around its pivot axis can push the wedge-shaped movable stopper 22 to move in the second linear direction through the hole of the self-locking handle seat 20 to lock the movement of the moving plate 3 in the first linear direction, and the second linear direction is perpendicular to the first linear direction.
Fig. 17 is a cross-sectional view M-M of the structure shown in fig. 15.
Fig. 18 is a partial enlarged view of the structure shown in fig. 17 at E.
Fig. 19 is a partial enlarged view of the structure shown in fig. 17 at F.
As shown in fig. 17, 18 and 19, and further referring to fig. 1 and 15, in the present embodiment, in the moving plate 3 of the measuring apparatus according to the present invention, besides the pre-guiding pin 301, the moving plate 3 is further provided with a positioning pin 23 and a positioning pin 24, and the positioning pin 23 and the positioning pin 24 cooperate with the pre-guiding pin 301 to position the cylinder 12 to be measured disposed at the measuring station of the moving plate 3. It should be noted that, in the present invention, the positioning pins 23 and 24 may be small diamond positioning pins and/or cylindrical positioning pins according to specific requirements, and the positioning effect can also be achieved.
In summary, in the present invention, in the initial state, the moving plate 3 can be disposed at the right end of the base 1, and at this time, the cylinder 12 to be tested can be placed on the moving plate 3 along the pre-guiding pin 301 on the moving plate 3, and the positioning pin 23 and the positioning pin 24 are inserted into the positioning hole corresponding to the cylinder 12 to be tested, so as to cooperatively realize the positioning of the cylinder 12 to be tested. After the cylinder 12 to be measured is positioned at the measuring station of the moving plate 3, the moving plate 3 can be moved to the left, and the moving plate 3 can move to the left along the track direction of the guide rail 13 until the moving plate 3 abuts against the stop pin 201 arranged on the lifting table 2. At this time, the operator can control the wedge-shaped movable stopper 22 to lock the position of the moving plate 3 relative to the lifting platform 2 through the self-locking handle 21.
Accordingly, the operator can manually lift the lifting handle 19 of the measuring device upward, so that the rotation of the lifting handle 19 about its pivot drives the lifting link 18 to move, so that the cam guide 17 linearly moves on the base body 1, and the lifting platform 2 is lifted in the height direction by the rolling of the roller 203 along the inclined surface of the cam guide 17. When the lifting platform 2 is at the jacking position, the inner side of the lower end of the first parallelogram four-bar linkage 6 and the inner side of the lower end of the second parallelogram four-bar linkage 7 clamp the thrust surface of the cylinder body 12 to be tested. At this moment, the first dial indicator 10 can measure the reading, and then the operating personnel can rotate the handle 501 at the end of the meter frame shaft 5 to drive the meter frame shaft 5 to rotate around the axis of the meter frame shaft, so that the reading on the meter is read again, and the accurate measurement of the size of the thrust surface of the cylinder body 12 to be measured is realized.
Therefore, the measuring device disclosed by the invention can be used for quickly and accurately measuring the size of the thrust surface of the cylinder body through reasonable structural design, and can assist an operator to observe the size of the thrust surface of the cylinder body, so that the cutter head can be strictly controlled on the size of the thrust surface of the cylinder body, and the production quality is ensured.
The measuring device has the advantages of simple structure, convenience in maintenance, high reliability and convenience in use, can be used for measuring the sizes of the thrust surfaces of all cylinder bodies, and has very good popularization prospect and application value.
It should be noted that the combination of the features in the present application is not limited to the combination described in the claims of the present application or the combination described in the embodiments, and all the features described in the present application may be freely combined or combined in any manner unless contradicted by each other.
It should also be noted that the above-mentioned embodiments are only specific embodiments of the present invention. It is apparent that the present invention is not limited to the above embodiments and similar changes or modifications can be easily made by those skilled in the art from the disclosure of the present invention and shall fall within the scope of the present invention.

Claims (10)

1. A measuring device for measuring the dimension of a thrust surface of a cylinder block, comprising:
a base;
a lift table provided on the base, the lift table being provided to be movable in a height direction relative to the base;
the moving plate is arranged to move relative to the base in a first linear direction, and a measuring station for placing a cylinder to be measured is arranged on the moving plate;
the portal frame is vertically arranged on the base;
the gauge stand shaft is transversely arranged on the portal frame;
the first parallelogram four-bar linkage mechanism and the second parallelogram four-bar linkage mechanism are respectively connected with the meter frame shaft, and a spring guider is connected between the first parallelogram four-bar linkage mechanism and the second parallelogram four-bar linkage mechanism;
the first spring is arranged between the first parallelogram four-bar linkage mechanism and the second parallelogram four-bar linkage mechanism in a compressed mode through the spring guider so that the inner side of the lower end of the first parallelogram four-bar linkage mechanism and the inner side of the lower end of the second parallelogram four-bar linkage mechanism clamp the thrust surface of the cylinder body to be tested;
the measuring rod is connected with the upper end of the first parallelogram four-bar linkage;
the first dial indicator is connected with the head end of the measuring rod;
and the second dial indicator is connected with the upper end of the second parallelogram four-bar linkage mechanism and is connected with the tail end of the measuring rod.
2. The measuring device for measuring the dimensions of the thrust surface of a cylinder according to claim 1, characterized in that said base and said lifting table are provided with guides to enable the mobile plate to move in a first linear direction with respect to the base.
3. The measuring device for measuring the dimension of the thrust surface of the cylinder block as claimed in claim 1, wherein said moving plate is provided with pre-guide pins for guiding the cylinder block to be measured during the process of placing the cylinder block to be measured in said measuring station.
4. The measuring device for measuring the dimension of the thrust surface of the cylinder body as claimed in claim 1, wherein the gauge stand shaft is provided with a step surface, and a second spring for applying axial pretightening force is arranged between the step surface and the portal frame.
5. The measuring device for measuring the dimension of the thrust surface of the cylinder body as claimed in claim 1, wherein the end of the gauge stand shaft is provided with a handle which drives the gauge stand shaft to rotate around its own axis.
6. The measuring device for measuring the dimension of the thrust surface of the cylinder block as claimed in claim 1, wherein a blocking pin is further vertically arranged on the lifting table to block the moving plate from further linear movement.
7. The measuring device for measuring the dimension of the thrust surface of the cylinder block as claimed in any one of claims 1 to 6, wherein the lower surface of the elevating platform is further provided with rollers, and the measuring device further comprises:
the wedge guide block is arranged on the base body;
one end of the lifting connecting rod is pivoted with the base body, and the other end of the lifting connecting rod is pivoted with the wedge guide block;
a lifting handle pivotally connected to the lifting link;
the lifting handle drives the lifting connecting rod to act by rotating around the pivot shaft of the lifting handle, so that the wedge guide block linearly moves on the base body, and the lifting platform is driven to lift up and down in the height direction by rolling of the roller along the inclined surface of the wedge guide block.
8. The measuring device for measuring the dimension of the thrust surface of the cylinder body as claimed in claim 7, wherein a jacking guide rod is further arranged between the lifting table and the base body.
9. The measuring device for measuring the dimensions of the thrust surface of a cylinder according to claim 1, characterized in that said portal frame is mounted on the base by means of an axle seat.
10. The measuring device for measuring the dimension of the thrust surface of the cylinder block according to any one of claims 1 to 6 and 8 to 9, wherein the side surface of the moving plate has a wedge surface, the measuring device further comprising:
the self-locking handle seat is arranged on the lifting platform;
the self-locking handle is arranged on the self-locking handle seat;
the wedge-shaped movable stop block is arranged in a hole of the self-locking handle seat and is pivoted with the self-locking handle, and the wedge-shaped movable stop block is provided with a wedge-shaped surface matched with the wedge-shaped surface on the side surface of the movable plate;
the self-locking handle rotates around a pivot to push the wedge-shaped movable stop block to pass through the hole of the self-locking handle seat to move in a second linear direction so as to lock the moving plate to move in the first linear direction, and the second linear direction is perpendicular to the first linear direction.
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CN114719709A (en) * 2022-03-02 2022-07-08 上汽大众汽车有限公司 Detection apparatus for use bent axle positioning reference inspection blank surplus
CN114719709B (en) * 2022-03-02 2023-09-22 上汽大众汽车有限公司 Detection device for detecting blank allowance by crankshaft positioning reference

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