CN219037801U - Gauge for measuring size of automobile connecting rod - Google Patents

Abstract

The utility model belongs to the technical field of automobile connecting rod detection tools, and particularly discloses a detection tool for measuring the size of an automobile connecting rod, which comprises a detection platform, a standard piece, a positioning assembly and a detection assembly, wherein the positioning assembly comprises a first large end supporting seat, a first small end supporting seat and a pressing structure, a first large end mandrel for positioning a connecting rod large end center hole is arranged on the first large end supporting seat, a first small end mandrel for positioning a connecting rod small end center hole is arranged on the first small end supporting seat, and the first large end supporting seat and the first small end supporting seat are fixed on the detection platform; the pressing structure is used for pressing the big end of the connecting rod; the detection assembly comprises a big head thickness measurement assembly, a small head thickness measurement assembly and a flatness measurement assembly which can move on the detection platform. The thicknesses of the standard piece and the workpiece are measured respectively, so that whether the thickness of the big end and the thickness of the thief meet the requirements can be directly obtained.

Description

Gauge for measuring size of automobile connecting rod

Technical Field

The utility model belongs to the technical field of automobile connecting rod detectors, and particularly relates to a detector for measuring the size of an automobile connecting rod.

Background

The connecting rod is an important part in engines of automobiles, ships and the like, and is connected with a piston and a crankshaft, and the connecting rod is used for converting the reciprocating motion of the piston into the rotary motion of the crankshaft and transmitting the force acting on the piston to the crankshaft to output power. The control of the size of the connecting rod is particularly important because the connecting rod is in a severe working environment with high speed, high pressure and high temperature, and the stable and durable operation of the engine is considered, so that the connecting rod is required to have enough precision and strength. The key characteristic dimensions of the online processing of the connecting rod mainly comprise the flatness, thickness and fall degree of the large and small head end faces and the symmetry degree of the small head end faces and the rod body end faces.

In the prior art, when measuring end surface parallelism, flatness and thickness, a sitting type gauge is generally adopted for detection, a workpiece is manually pushed into a measuring position, the gauge is positioned by a reference surface, one side point is respectively arranged on two end surfaces of the workpiece, and the flatness, the thickness and the parallelism of the workpiece are detected by moving the workpiece on the reference surface.

The above measurement method can only obtain the test size of the workpiece alone, and cannot directly obtain the thickness difference between the workpiece and the standard. And the connecting rod is not provided with a positioning device, so that the connecting rod can move in the detection process, and the result is inaccurate.

Disclosure of Invention

The utility model aims to provide a gauge for measuring the size of an automobile connecting rod, which solves the problem that the thickness difference between the gauge and the standard part cannot be directly obtained in the existing testing method, and the measuring result is inaccurate possibly due to the movement of the connecting rod.

In order to achieve the above purpose, the technical scheme of the utility model is as follows: the utility model provides a examine utensil for measuring car connecting rod size, includes testing platform, standard component, locating component and detection component, locating component includes first big end supporting seat, first tip supporting seat and compress tightly the structure, be equipped with the first big end dabber that is used for carrying out the location to connecting rod big end centre bore on the first big end supporting seat, be equipped with the first tip dabber that is used for carrying out the location to connecting rod tip centre bore on the first tip supporting seat, first big end supporting seat and first tip supporting seat are fixed testing platform is last; the pressing structure is used for pressing the big end of the connecting rod; the detection assembly comprises a big head thickness measurement assembly, a small head thickness measurement assembly and a flatness measurement assembly, wherein the big head thickness measurement assembly can move on the detection platform and is used for measuring the big head thickness of a standard part, the big head thickness of a workpiece and the parallelism of the big head, and the small head thickness measurement assembly is used for measuring the small head thickness of the standard part, the small head thickness of the workpiece and the parallelism of the small head; the flatness measuring assembly is used for measuring the flatness of the workpiece.

Further, the positioning assembly further comprises a second large end supporting seat and a second small end supporting seat, a second large end mandrel used for positioning the central hole of the large end of the connecting rod is arranged on the second large end supporting seat, a second small end mandrel used for positioning the central hole of the small end of the connecting rod is arranged on the second small end supporting seat, and the second large end supporting seat and the second small end supporting seat are fixed on the detection platform; the detection assembly further comprises a rod body symmetry measuring assembly and a small head symmetry measuring assembly which are used for measuring the rod body symmetry of the connecting rod and the small head symmetry of the connecting rod respectively, and the rod body symmetry measuring assembly and the small head symmetry measuring assembly are fixed on the detection platform.

Further, the compressing structure comprises a quick clamp and a compressing plate, wherein the compressing plate is fixed at the compressing end of the quick clamp.

Further, a placement area is further arranged on the detection platform and used for placing the big head thickness measuring assembly, the small head thickness measuring assembly and the flatness measuring assembly.

Further, the shaft symmetry measuring assembly and the small-head symmetry measuring assembly comprise a symmetry measuring dial gauge, a first mounting block, a second mounting block and a rotating block, wherein the first mounting block and the second mounting block are fixed on the detection platform, the first mounting block is used for mounting the symmetry measuring dial gauge, a through groove is vertically formed in the first mounting block, and a probe of the symmetry measuring dial gauge can move in the through groove; the second mounting block is provided with a groove, and the rotating block is rotationally connected with two sides of the groove through a first rotating shaft; the two sides of the rotating block are respectively provided with a detecting block and a linkage block, the detecting block can be positioned below the workpiece, the detecting block is connected with the second mounting block through a second rotating shaft, and the rotating directions of the first rotating shaft and the second rotating shaft are consistent; the linkage block is positioned in the groove and below the probe of the symmetry measurement dial indicator; and the probe of the symmetry measurement dial indicator is propped against the linkage block.

Further, big head thickness measurement subassembly includes first base and installs the big head thickness measurement amesdial on first base, little head thickness measurement subassembly includes the second base and installs the little head thickness measurement amesdial on the second base, first base and second base are used for remove on the testing platform.

Further, the flatness measuring assembly comprises a third base and a flatness measuring dial gauge arranged on the third base, a vertical through hole is formed in the third base, and a probe of the flatness measuring dial gauge can pass through the vertical through hole; the third base is used for moving on the workpiece.

Further, the shape of the pressing plate is a big cutting circle, the central shaft of the pressing plate coincides with the central shaft of the first big end mandrel, and a plurality of notches for measurement are formed in the circumference of the pressing plate.

The working principle of the technical scheme is as follows: firstly, a standard piece is placed on a first big end supporting seat and a first small end supporting seat, a first big end mandrel and a first small end mandrel are used for positioning a central hole of the standard piece, and then a quick clamp and a compacting plate are used for compacting a connecting rod big end of the standard piece. Then lifting the probe of the big end thickness measurement dial indicator, pushing the big end thickness measurement dial indicator to the position above the big end of the connecting rod, loosening the probe, abutting the probe against the upper surface of the big end of the connecting rod, and then zeroing the big end thickness measurement dial indicator. And lifting the probe of the small-head thickness measurement dial indicator and pushing the small-head thickness measurement dial indicator to the position above the small end of the connecting rod in the same way, loosening the probe, abutting the probe against the upper surface of the small end of the connecting rod, and then zeroing the small-head thickness measurement dial indicator. The quick clamp is then released and the standard is removed.

Then place the work piece on first big end supporting seat and first tip supporting seat, first big end dabber and first tip dabber are fixed a position the centre bore of work piece, then use quick clamp and hold-down plate to compress tightly the connecting rod big end of work piece. Then lifting the probe of the big end thickness measurement dial indicator, pushing the big end thickness measurement dial indicator to the position above the big end of the connecting rod, loosening the probe, abutting the probe against the upper surface of the big end of the connecting rod, and reading, wherein the data at the moment is the difference value between the big end of the workpiece and the big end of the standard piece. Lifting the probe of the big head thickness measurement dial indicator, pushing the big head thickness measurement dial indicator to other positions of the big head of the connecting rod, and then loosening the probe, wherein the probe is propped against the upper surface of the big head of the connecting rod. And lifting the probe of the small-head thickness measurement dial indicator and pushing the small-head thickness measurement dial indicator to the position above the small head of the connecting rod in the same way, loosening the probe, propping the probe against the upper surface of the small head of the connecting rod, and reading the small head of the connecting rod, wherein the data at the moment is the difference value between the small head of the workpiece and the small head of the standard piece. Lifting the probe of the small-head thickness measurement dial indicator, pushing the small-head thickness measurement dial indicator to other positions of the small end of the connecting rod, and then loosening the probe, wherein the probe is propped against the upper surface of the small end of the connecting rod. The error between the workpiece and the standard can be directly seen.

And then placing the flatness measuring assembly on the surface of the workpiece, enabling a probe of the flatness measuring dial indicator to be always in contact with the surface of the workpiece, and pushing the third base to enable the flatness measuring assembly to move on the surface of the workpiece, so that the flatness can be seen.

The quick clamp is then released and the workpiece is removed. And then placing the workpiece on a second large-end supporting seat and a second small-end supporting seat, and positioning the central hole of the standard piece by a second large-end mandrel and a second small-end mandrel. One side of the workpiece can downwards press the detection block in the placing process, so that the rotation block is driven to rotate, the upward movement of the linkage block is realized, and the probe of the symmetry measurement dial indicator is driven to move upwards. The two symmetry measuring dial indicators are then zeroed. And finally, after the workpiece is turned over by 180 degrees, placing the workpiece on the second large-end supporting seat and the second small-end supporting seat. The other side of the workpiece can downwards press the detection block in the placing process, so that the rotation block is driven to rotate, the upward movement of the linkage block is realized, and the probe of the symmetry measurement dial indicator is driven to move upwards. The data at this time is symmetry.

The beneficial effects of this technical scheme lie in:

(1) according to the technical scheme, the thicknesses of the standard piece and the workpiece are measured respectively, so that whether the thickness of the big end and the thickness of the thief meet the requirements can be directly obtained.

(2) According to the technical scheme, the symmetry degree of the rod body and the small end of the connecting rod can be measured respectively by arranging the rod body symmetry degree measuring assembly and the small end symmetry degree measuring assembly.

(3) The connecting rod can be positioned and pressed by arranging the positioning component, so that inaccurate measurement caused by movement in measurement is avoided.

(4) The setting places the region, can carry out the induction to big end thickness measurement subassembly, little end thickness measurement subassembly and flatness measurement subassembly and place.

Drawings

Fig. 1 is a schematic structural view of a gauge for measuring the size of an automotive connecting rod according to the present utility model.

Detailed Description

The following is a further detailed description of the embodiments:

reference numerals in the drawings of the specification include: the device comprises a detection platform 1, a first large end supporting seat 2, a first large end mandrel 3, a first small end supporting seat 4, a first small end mandrel 5, a second large end supporting seat 6, a second large end mandrel 7, a second small end supporting seat 8, a second small end mandrel 9, a quick clamp 10, a pressing plate 11, a second base 12, a small end thickness measurement dial gauge 13, a first base 14, a large end thickness measurement dial gauge 15, a rod body symmetry measurement assembly 16, a small end symmetry measurement assembly 17, a first installation block 18, a second installation block 19, a rotating block 20, a detection block 21, a linkage block 22, a symmetry measurement dial gauge 23, a flatness measurement dial gauge 24, a third base 25 and a placement area 26.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

An example is substantially as shown in figure 1: the utility model provides a examine utensil for measuring car connecting rod size, including testing platform 1, the standard component, locating component and testing component, locating component includes first big end supporting seat 2, first little end supporting seat 4, second big end supporting seat 6, second little end supporting seat 8 and compress tightly the structure, be equipped with on the first big end supporting seat 2 and be used for carrying out the first big end dabber 3 that fixes a position to connecting rod big end centre bore, be equipped with on the first little end supporting seat 4 and be used for carrying out the first little end dabber 5 that fixes a position to connecting rod little end centre bore, be equipped with on the second big end supporting seat 6 and be used for carrying out the second big end dabber 7 that fixes a position to connecting rod big end centre bore, be equipped with on the second little end supporting seat 8 and be used for carrying out the second little end dabber 9 that fixes a position to connecting rod little end centre bore, first big end supporting seat 2, first little end supporting seat 4, second big end supporting seat 6 and second little end supporting seat 8 are fixed on testing platform 1.

The compressing structure is used for compressing the big end of the connecting rod; the compressing structure comprises a quick clamp 10 and a compressing plate 11, wherein the compressing plate 11 is fixed at the compressing end of the quick clamp 10. The shape of the compacting plate 11 is a large cutting circle, the central axis of the compacting plate 11 coincides with the central axis of the first large-end mandrel 3, and a plurality of notches for measurement are formed in the circumference of the compacting plate 11.

The detection assembly comprises a big head thickness measurement assembly, a small head thickness measurement assembly, a flatness measurement assembly, a rod body symmetry measurement assembly 16 and a small head symmetry measurement assembly 17, wherein the big head thickness measurement assembly is used for measuring the big head thickness of a standard part, the big head thickness and the big head parallelism of a workpiece, and the small head thickness measurement assembly is used for measuring the small head thickness of the standard part, the small head thickness and the small head parallelism of the workpiece; the flatness measuring assembly is used for measuring the flatness of the workpiece; the shaft symmetry measuring assembly 16 is used for measuring the symmetry of the connecting rod shaft; the small-end symmetry measuring component 17 is used for measuring the symmetry of the small end of the connecting rod. The shaft symmetry measuring component 16 and the small head symmetry measuring component 17 are fixed on the detection platform 1. The large-head thickness measuring component, the small-head thickness measuring component and the flatness measuring component can move on the detection platform 1.

The rod body symmetry measuring assembly 16 and the small head symmetry measuring assembly 17 comprise a symmetry measuring dial gauge 23, a first mounting block 18, a second mounting block 19 and a rotating block 20, wherein the first mounting block 18 and the second mounting block 19 are fixed on the detection platform 1, the first mounting block 18 is used for mounting the symmetry measuring dial gauge 23, a through groove is vertically formed in the first mounting block 18, and a probe of the symmetry measuring dial gauge 23 can move in the through groove; the second mounting block 19 is provided with a groove, and the rotating block 20 is rotatably connected with two sides of the groove through a first rotating shaft. The both sides of turning block 20 are equipped with detection piece 21 and interlock piece 22 respectively, and detection piece 21 can be located the below of work piece, is connected through the second pivot between detection piece 21 and the second installation piece 19, and the direction of rotation of first pivot and second pivot is unanimous. The linkage block 22 is positioned in the groove and below the probe of the symmetry measurement dial gauge 23; the probe of the symmetry measuring dial gauge 23 is propped against the linkage block 22. The detection block 21 of the shaft symmetry-measuring assembly 16 is located below the shaft, and the detection block 21 of the small-head symmetry-measuring assembly 17 is located below the small head.

The big end thickness measurement assembly comprises a first base 14 and a big end thickness measurement dial indicator 15 arranged on the first base 14, the small end thickness measurement assembly comprises a second base 12 and a small end thickness measurement dial indicator 13 arranged on the second base 12, and the first base 14 and the second base 12 are used for moving on the detection platform 1.

The flatness measuring assembly comprises a third base 25 and a flatness measuring dial gauge 24 arranged on the third base 25, a vertical through hole is formed in the third base 25, and a probe of the flatness measuring dial gauge 24 can pass through the vertical through hole; the third base 25 is for movement over the workpiece.

The detection platform 1 is also provided with a placement area 26, and the placement area 26 is used for placing a big head thickness measurement assembly, a small head thickness measurement assembly and a flatness measurement assembly.

The big end thickness measuring dial gauge 15, the small end thickness measuring dial gauge 13, the flatness measuring dial gauge 24 and the symmetry measuring dial gauge 23 are all three-full digital display dial gauges.

The specific implementation process is as follows:

firstly, a standard piece is placed on a first big end supporting seat 2 and a first small end supporting seat 4, a first big end mandrel 3 and a first small end mandrel 5 are used for positioning a central hole of the standard piece, and then a quick clamp 10 and a compacting plate 11 are used for compacting a connecting rod big end of the standard piece. Then lifting the probe of the big end thickness measurement dial indicator 15, pushing the big end thickness measurement dial indicator 15 to the position above the big end of the connecting rod, loosening the probe, abutting the probe against the upper surface of the big end of the connecting rod, and then zeroing the big end thickness measurement dial indicator 15. And similarly, lifting the probe of the small-head thickness measurement dial gauge 13, pushing the small-head thickness measurement dial gauge 13 to the position above the small end of the connecting rod, loosening the probe, abutting the probe against the upper surface of the small end of the connecting rod, and then zeroing the small-head thickness measurement dial gauge 13. The quick clamp 10 is then released and the targets are removed.

Then the workpiece is placed on the first big end supporting seat 2 and the first small end supporting seat 4, the first big end mandrel 3 and the first small end mandrel 5 are used for positioning the central hole of the workpiece, and then the quick clamp 10 and the pressing plate 11 are used for pressing the connecting rod big end of the workpiece. Then lifting the probe of the big end thickness measurement dial indicator 15 and pushing the big end thickness measurement dial indicator 15 to the upper part of the big end of the connecting rod, then loosening the probe, abutting the probe against the upper surface of the big end of the connecting rod, and then reading, wherein the data at the moment is the difference value between the big end of the workpiece and the big end of the standard piece. Lifting the probe of the big head thickness measurement dial indicator 15, pushing the big head thickness measurement dial indicator 15 to other positions of the big head of the connecting rod, and then loosening the probe, wherein the probe is propped against the upper surface of the big head of the connecting rod. The probe of the small-head thickness measurement dial gauge 13 is lifted up in the same way, the small-head thickness measurement dial gauge 13 is pushed to the position above the small head of the connecting rod, then the probe is loosened, the probe is abutted against the upper surface of the small head of the connecting rod, then reading can be carried out, and the data at the moment are the difference value between the small head of the workpiece and the small head of the standard piece. Lifting the probe of the small-head thickness measurement dial gauge 13, pushing the small-head thickness measurement dial gauge 13 to other positions of the small end of the connecting rod, and then loosening the probe, wherein the probe is propped against the upper surface of the small end of the connecting rod. The error between the workpiece and the standard can be directly seen. The difference in thickness is the error divided by 2.

And then placing the flatness measuring assembly on the surface of the workpiece, wherein the probe of the flatness measuring dial gauge 24 is always in contact with the surface of the workpiece, and pushing the third base 25 to enable the flatness measuring assembly to move on the surface of the workpiece, so that the flatness can be seen.

The quick clamp 10 is then released and the workpiece is removed. The workpiece is then placed on the second large end support 6 and the second small end support 8, and the second large end mandrel 7 and the second small end mandrel 9 position the central hole of the target. One side of the workpiece can downwards press the detection block 21 in the placing process, so that the rotation block 20 is driven to rotate, the upward movement of the linkage block 22 is realized, and the probe of the symmetry measurement dial gauge 23 is driven to move upwards. The two symmetry-measuring dial indicators 23 are then zeroed. Finally, the workpiece is turned over by 180 degrees and then placed on the second large end supporting seat 6 and the second small end supporting seat 8. The other side of the workpiece can downwards press the detection block 21 in the placing process, so that the rotation block 20 is driven to rotate, the upward movement of the linkage block 22 is realized, and the probe of the symmetry measuring dial gauge 23 is driven to move upwards. The data at this time is symmetry.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The foregoing is merely an embodiment of the present utility model, and a specific structure and characteristics of common knowledge in the art, which are well known in the scheme, are not described herein, so that a person of ordinary skill in the art knows all the prior art in the application day or before the priority date of the present utility model, and can know all the prior art in the field, and have the capability of applying the conventional experimental means before the date, so that a person of ordinary skill in the art can complete and implement the present embodiment in combination with his own capability in the light of the present application, and some typical known structures or known methods should not be an obstacle for a person of ordinary skill in the art to implement the present application. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims (8)

1. A examine utensil for measuring car connecting rod size, its characterized in that: the positioning assembly comprises a first large end supporting seat, a first small end supporting seat and a pressing structure, wherein a first large end mandrel for positioning a connecting rod large end center hole is arranged on the first large end supporting seat, a first small end mandrel for positioning a connecting rod small end center hole is arranged on the first small end supporting seat, and the first large end supporting seat and the first small end supporting seat are fixed on the detection platform; the pressing structure is used for pressing the big end of the connecting rod; the detection assembly comprises a big head thickness measurement assembly, a small head thickness measurement assembly and a flatness measurement assembly, wherein the big head thickness measurement assembly can move on the detection platform and is used for measuring the big head thickness of a standard part, the big head thickness of a workpiece and the parallelism of the big head, and the small head thickness measurement assembly is used for measuring the small head thickness of the standard part, the small head thickness of the workpiece and the parallelism of the small head; the flatness measuring assembly is used for measuring the flatness of the workpiece.

2. The gauge for measuring the dimensions of an automotive connecting rod of claim 1, wherein: the positioning assembly further comprises a second large end supporting seat and a second small end supporting seat, a second large end mandrel used for positioning the central hole of the large end of the connecting rod is arranged on the second large end supporting seat, a second small end mandrel used for positioning the central hole of the small end of the connecting rod is arranged on the second small end supporting seat, and the second large end supporting seat and the second small end supporting seat are fixed on the detection platform; the detection assembly further comprises a rod body symmetry measuring assembly and a small head symmetry measuring assembly which are used for measuring the rod body symmetry of the connecting rod and the small head symmetry of the connecting rod respectively, and the rod body symmetry measuring assembly and the small head symmetry measuring assembly are fixed on the detection platform.

3. The gauge for measuring the dimensions of an automotive connecting rod of claim 1, wherein: the compressing structure comprises a quick clamp and a compressing plate, wherein the compressing plate is fixed at the compressing end of the quick clamp.

4. The gauge for measuring the dimensions of an automotive connecting rod of claim 1, wherein: the detection platform is further provided with a placement area, and the placement area is used for placing the big head thickness measuring assembly, the small head thickness measuring assembly and the flatness measuring assembly.

5. The gauge for measuring the size of an automotive connecting rod according to claim 2, wherein: the rod body symmetry measuring assembly and the small head symmetry measuring assembly comprise a symmetry measuring dial gauge, a first mounting block, a second mounting block and a rotating block, wherein the first mounting block and the second mounting block are fixed on the detection platform, the first mounting block is used for mounting the symmetry measuring dial gauge, a through groove is vertically formed in the first mounting block, and a probe of the symmetry measuring dial gauge can move in the through groove; the second mounting block is provided with a groove, and the rotating block is rotationally connected with two sides of the groove through a first rotating shaft; the two sides of the rotating block are respectively provided with a detecting block and a linkage block, the detecting block can be positioned below the workpiece, the detecting block is connected with the second mounting block through a second rotating shaft, and the rotating directions of the first rotating shaft and the second rotating shaft are consistent; the linkage block is positioned in the groove and below the probe of the symmetry measurement dial indicator; and the probe of the symmetry measurement dial indicator is propped against the linkage block.

6. The gauge for measuring the dimensions of an automotive connecting rod of claim 1, wherein: the big end thickness measurement assembly comprises a first base and a big end thickness measurement dial indicator arranged on the first base, the small end thickness measurement assembly comprises a second base and a small end thickness measurement dial indicator arranged on the second base, and the first base and the second base are used for moving on the detection platform.

7. The gauge for measuring the dimensions of an automotive connecting rod of claim 1, wherein: the flatness measuring assembly comprises a third base and a flatness measuring dial gauge arranged on the third base, a vertical through hole is formed in the third base, and a probe of the flatness measuring dial gauge can pass through the vertical through hole; the third base is used for moving on the workpiece.

8. A gauge for measuring automotive connecting rod dimensions as defined in claim 3, wherein: the shape of the compacting plate is a big cutting circle, the central shaft of the compacting plate coincides with the central shaft of the first big end mandrel, and a plurality of notches for measurement are formed in the circumference of the compacting plate.

Images