CN211373443U - Diameter tolerance measuring meter - Google Patents
Diameter tolerance measuring meter Download PDFInfo
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- CN211373443U CN211373443U CN201922066654.5U CN201922066654U CN211373443U CN 211373443 U CN211373443 U CN 211373443U CN 201922066654 U CN201922066654 U CN 201922066654U CN 211373443 U CN211373443 U CN 211373443U
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Abstract
The utility model discloses a diameter tolerance measuring meter, which comprises a main body, a moving shaft and a positioning shaft which are respectively arranged at the left end and the right end of the main body, and a dial indicator driven by the moving shaft; the moving shaft is fixed by a sliding block and limited by a round hole which is communicated with the main body and the parallel correction block and is larger than the diameter of the curved surface of the moving shaft; the sliding block is arranged in the guide rail in a sliding way, and the left side surface and the right side surface of the sliding block are respectively abutted with an abutting end head and an elastic pin of the dial indicator; the positioning shaft penetrates through the positioning block and the fixing block and is fixed on the positioning block; adjusting the A size between the moving shaft and the positioning shaft to be the minimum limit value of the diameter tolerance of the cylinder; adjusting the size B to be the maximum limit value of the diameter tolerance of the inner hole; during measurement, the movable shaft and the positioning shaft are inserted into two sides of the cylinder to be measured or into an inner hole, and the position change of the movable shaft is transmitted to the dial indicator through the sliding block and converted into the scale change of the pointer of the dial indicator; the defects that the existing measuring tool is insufficient in precision and the measuring position is difficult to determine are overcome; the operation is simpler and more convenient, and the timeliness is stronger.
Description
Technical Field
The utility model belongs to the technical field of the size measurement, a diameter tolerance measuring gauge is related to.
Background
In the process of machining a cylinder or a circular hole surface of a workpiece by using a numerical control machine, the workpiece clamped on the numerical control machine needs to be measured continuously to ensure that the machining diameter size of the cylinder or the circular hole surface is kept within a reasonable tolerance range;
however, for workpieces with relatively high diameter tolerance requirements, the existing gauges are often too precise to perform accurate measurements or cannot be placed in a more ideal measurement position due to the structure of the gauge itself. For example: measuring the diameter of a workpiece
The hole depth is the diameter of an inner hole of 2mm, and if the measurement is carried out by using a representative caliper (within 0.1mm of precision), the measurement requirement cannot be met due to too low precision; if an inside dial gauge (the precision can be controlled to be 0.01mm) is used for measurement, although the precision can meet the measurement requirement, the measurement tailstock is too large to place the gauge at an ideal position, and accurate measurement cannot be completed.
Disclosure of Invention
The utility model provides a technical problem provide a diameter tolerance measuring gauge can carry out diameter tolerance's accurate, quick measurement to cylinder or hole on the work piece of processing in batches, overcomes current measuring tool measuring accuracy can not satisfy the requirement or measure the defect that the position is difficult to the affirmation, and its easy operation, convenient to use and measuring accuracy are high.
The utility model discloses a realize through following technical scheme:
a diameter tolerance measuring meter comprises a main body, a moving shaft, a positioning shaft and a dial indicator, wherein the moving shaft and the positioning shaft are respectively arranged at the left end and the right end of the main body;
the sliding block is connected with the moving shaft and is limited by a round hole which is communicated with the main body and the parallel correction block and is larger than the diameter of the curved surface of the moving shaft; the slide block is arranged in the guide rail, and the left side surface and the right side surface of the slide block are respectively abutted against the abutting end head and the elastic pin of the dial indicator;
the positioning shaft penetrates through the positioning block and the fixing block and is fixed on the positioning block;
adjusting the dimension A between the moving shaft and the positioning shaft to be the minimum limit value of the diameter tolerance of the cylinder to be measured; adjusting the size B between the moving shaft and the positioning shaft to be the maximum limit value of the diameter tolerance of the inner hole to be measured; during the measurement, insert the both sides of awaiting measuring the cylinder or insert the hole with moving axis and location axle, the position change of moving axis transmits the percentage table through the slider on to the scale change of converting into the percentage table pointer.
Furthermore, the direction of the interference force of the interference end of the dial indicator to the sliding block faces the right; the dial indicator is detachably fixed on the main body through the first clamping block; the elastic pin is connected to the elastic pin seat through a spring, and the elastic pin seat is fixed on the main body through the second clamping block; the direction of the resisting force of the elastic pin to the slide block faces to the left.
Further, the guide rail and the parallel correction block are respectively and fixedly arranged on the main body.
Furthermore, a rectangular strip hole is formed in the main body, and the positioning block and the fixing block are fixedly installed on the main body through a fastening connecting piece penetrating through the rectangular strip hole.
Further, the structure of fixed block is two rectangle pieces that pile up from top to bottom, and the rectangle piece of fixed block top inlays in the rectangle strip downthehole, and its width and the width looks adaptation in rectangle strip hole.
Furthermore, the upper end of slider is equipped with cylindric sleeve, and cylindric telescopic lateral wall is equipped with the first screw knob that is used for fastening the moving axis.
Furthermore, the upper end of locating piece is equipped with cylindric sleeve, and cylindric telescopic lateral wall is equipped with the second screw knob that is used for fastening the location axle.
Further, the positioning shaft adjusts the A size or the B size between the positioning shaft and the positioning block by changing the fixing positions of the positioning block and the fixing block on the main body;
when the diameter tolerance of the cylinder is measured, the dimension A between the moving shaft and the positioning shaft is adjusted, the positioning shaft is kept fixed and is inserted into two sides of the cylinder to be measured together with the moving shaft, and the outer walls of the moving shaft and the positioning shaft are respectively contacted with two sides of the cylinder to be measured; the moving shaft drives the sliding block to slide towards the left side under the collision of the cylinder body, the collision end of the dial indicator keeps contracting in the same direction and at the same distance according to the sliding mode of the sliding block, a pointer of the dial indicator rotates corresponding scales according to the contraction distance of the collision end, and the tolerance size of the measured cylinder body is read on the dial indicator;
when the diameter tolerance of the inner hole is measured, the size B between the moving shaft and the positioning shaft is adjusted, the positioning shaft is kept fixed and is inserted into the inner hole to be measured together with the moving shaft, and the outer walls of the moving shaft and the positioning shaft are respectively contacted with the cylindrical side surface of the inner hole; the moving shaft drives the sliding block to slide rightwards under the conflict of the curved surface of the inner hole of the workpiece, the conflict end of the dial indicator keeps extending in the same direction and at the same distance according to the sliding mode of the sliding block, a pointer of the dial indicator rotates corresponding scales according to the extending distance of the conflict end, and the tolerance size of the measured inner hole is read on the dial indicator.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model adjusts the B size between the moving shaft and the positioning shaft to the maximum limit size of the aperture to be measured by changing the installation position of the positioning shaft; or the dimension A between the moving shaft and the positioning shaft is adjusted to be the minimum limit dimension of the diameter of the cylinder to be measured, so that the positioning shaft keeps a fixed position, the moving shaft can drive the sliding block to move in the sliding rail under the conflict of the inner hole or the cylinder, and the pointer of the dial indicator rotates corresponding scales, thereby overcoming the defect of insufficient precision of the existing measuring tool and realizing the precise measurement of the diameter tolerance;
when the diameter tolerance size of the inner hole or the cylinder is measured, the reasonable position during measurement can be determined only by directly inserting the moving shaft and the positioning shaft of the diameter tolerance measuring meter into the inner hole or into the two sides of the cylinder, and the measurement can be finished by directly reading the rotation scale of the pointer on the dial indicator; the defect that the measuring position is difficult to determine when the existing measuring tool measures the diameter of the aperture or the cylinder is overcome; especially when measuring the part of batch production, the utility model discloses compare current measuring tool, its operation or use are simple more, convenient, and ageing is stronger.
Drawings
FIG. 1 is a front view of the structure of the present invention;
FIG. 2 is a top view of the structure of the present invention;
FIG. 3 is an operation diagram of example 1;
FIG. 4 is an operation diagram of example 2;
the device comprises a main body 1, a moving shaft 2, a positioning shaft 3, a dial indicator 4, a sliding block 5, a parallel correction block 6, a guide rail 7, an elastic pin 8, a positioning block 9, a fixing block 10, a first clamping block 11, an elastic pin seat 12, a second clamping block 13, a rectangular strip hole 14, a first threaded knob 15 and a second threaded knob 16.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, which are illustrative, but not limiting, of the present invention; specific examples are given below.
A diameter tolerance measuring meter comprises a main body 1, a moving shaft 2, a positioning shaft 3 and a dial indicator 4, wherein the moving shaft 2 and the positioning shaft 3 are respectively arranged at the left end and the right end of the main body, and the dial indicator 4 is driven by the moving shaft 2;
the sliding block 5 is connected with the moving shaft 2 and is limited by circular holes which are communicated on the main body 1 and the parallel correction block 6 and are larger than the curved surface diameter of the moving shaft 2; the slide block 5 is arranged in the guide rail 7, and the left side surface and the right side surface of the slide block are respectively abutted against the abutting end head and the elastic pin 8 of the dial indicator 4;
the positioning shaft 3 penetrates through the positioning block 9 and the fixing block 10 and is fixed on the positioning block 9;
adjusting the dimension A between the moving shaft 2 and the positioning shaft 3 to be the minimum limit value of the diameter tolerance of the cylinder to be measured; adjusting the size B between the moving shaft 2 and the positioning shaft 3 to be the maximum limit value of the tolerance of the diameter of the inner hole to be measured; during the measurement, insert movable shaft 2 and location axle 3 in the both sides of measuring the cylinder or insert the hole, the position change of movable shaft 2 will transmit on percentage table 4 through sliding block 5 to the scale change of converting into 4 pointers of percentage table.
Specifically, the direction of the collision force of the collision end of the dial indicator 4 to the sliding block 5 faces right; the dial indicator is detachably fixed on the main body 1 through a first clamping block 11; the elastic pin 8 is connected to an elastic pin seat 12 through a spring, and the elastic pin seat 12 is fixed on the main body 1 through a second clamping block 13; the direction of the abutting force of the elastic pin 8 against the slide block 5 is towards the left.
Specifically, the guide rail 7 and the parallel correction block 6 are respectively fixedly mounted on the main body 1.
Specifically, a rectangular hole 14 is formed in the main body 1, and the positioning block 9 and the fixing block 10 are fixedly mounted on the main body 1 through a fastening connector penetrating through the rectangular hole 14.
Specifically, the structure of the fixed block 10 is two rectangular blocks stacked up and down, the rectangular block above the fixed block 10 is embedded in the rectangular strip hole 14, and the width of the rectangular block is matched with the width of the rectangular strip hole 14.
Specifically, the upper end of sliding block 5 is equipped with cylindric sleeve, and the lateral wall of cylindric sleeve is equipped with the first screw knob 15 that is used for fastening moving axis 2.
Specifically, the upper end of the positioning block 9 is provided with a cylindrical sleeve, and the side wall of the cylindrical sleeve is provided with a second threaded knob 16 for fastening the positioning shaft 3.
Specifically, the positioning shaft 3 adjusts the a size or the B size between the positioning shaft 3 and the moving shaft 2 by changing the fixing positions of the positioning block 9 and the fixing block 10 on the main body 1;
when the diameter tolerance of the inner hole is measured, the size B between the movable shaft 2 and the positioning shaft 3 is adjusted, the positioning shaft 3 is kept fixed and is inserted into the inner hole to be measured together with the movable shaft 2, and the outer walls of the movable shaft 2 and the positioning shaft 3 are respectively contacted with the cylindrical side surface of the inner hole; the moving shaft 2 drives the sliding block 5 to slide rightwards under the conflict of the curved surface of the inner hole of the workpiece, the conflict end of the dial indicator 4 keeps extending in the same direction and at the same distance according to the sliding mode of the sliding block 5, a pointer of the dial indicator 4 rotates corresponding scales according to the extending distance of the conflict end, and the tolerance size of the measured inner hole is read on the dial indicator;
when the diameter tolerance of the cylindrical surface is measured, the dimension A between the moving shaft 2 and the positioning shaft 3 is adjusted, the positioning shaft 3 is kept fixed and is inserted into two sides of the cylinder to be measured together with the moving shaft 2, and the outer walls of the moving shaft 2 and the positioning shaft 3 are respectively contacted with two sides of the cylinder to be measured; the moving shaft 2 drives the slider 5 to slide to the left under the conflict of the face of cylinder, and the conflict end of percentage table 2 keeps syntropy, the shrink of equidistance according to the sliding mode of slider 5, and the pointer of percentage table 2 rotates corresponding scale according to the shrink distance of conflict end, and the tolerance size of the cylinder of surveying reads on the percentage table.
Example 1
If a batch of parts to be machined exist, machining an inner hole on the parts, wherein the diameter of the inner hole is limited to 138mm, the tolerance size is + 0.04-0.00 mm, and the hole depth is 2 mm; there exists a part to be inspected after machining, which has an inner bore M of 138.02mm in diameter and a bore depth of 2mm, and taking the measurement of the diameter tolerance of the inner bore M on the part as an example, the measurement steps are as follows:
firstly, loosening a fastening connecting piece between a positioning block 9 and a fixing block 10 by using a screwdriver, and integrally moving the mounting positions of the positioning block 9 and the fixing block 10 on the right side of a main body 1 so as to adjust the B size between a positioning shaft 3 and a moving shaft 2 to 138.04mm, wherein the size is detected by using an outside micrometer;
and secondly, the test is qualified, namely after the size of the B between the positioning shaft 3 and the moving shaft 2 is 138.04mm, a screwdriver is used for fastening the fastening connecting piece, so that the positioning block 9 and the fixing block 10 are fixedly arranged at the position.
And thirdly, zeroing a dial indicator 4 on the diameter tolerance measuring meter.
Fourthly, loosening the first threaded knob 15 and the second threaded knob 16, adjusting the vertical installation position of the moving shaft 2 in the slider 5, adjusting the vertical installation position of the positioning shaft 3 in the positioning block 9, enabling the length of the moving shaft 2 extending out of the bottom surface of the parallel correction block 6 and the length of the positioning shaft 3 extending out of the bottom surface of the fixing block 10 to be smaller than 2mm, and ensuring that the moving shaft 2 and the positioning shaft 3 are flush with each other in the bottom surfaces.
Fifthly, the moving shaft 2 and the positioning shaft 3 of the diameter tolerance measuring meter are inserted into the inner hole M together, the outer walls of the moving shaft 2 and the positioning shaft 3 are respectively contacted with the cylindrical side surface of the inner hole M, and the bottom surface of the parallel correcting block 6 and the bottom surface of the fixed block 10 are respectively carried on the end surface of the outer side of the inner hole M.
Sixthly, reading data on the dial indicator; because the diameter of the inner hole M is 138.02mm, and the size B between the moving shaft 2 and the positioning shaft 3 is 138.04mm, the moving shaft 2 drives the sliding block 5 to slide rightwards by 0.02mm under the restriction and interference of the inner hole M; at the moment, the collision end of the dial indicator 4 extends by 0.02mm in the same direction according to the sliding of the sliding block 5, and the pointer of the dial indicator 4 correspondingly rotates clockwise by 2 scales according to the extension distance of the collision end; it should be noted that: when the pointer rotates clockwise by 2 scales, the size of the inner hole M is smaller than the previously set size B between the moving shaft 2 and the positioning shaft 3 by 0.02mm, and the size of the inner hole M is as follows: 138.04-0.02 ═ 138.02 mm;
and measuring the dimensional tolerance of the type of inner holes on all the parts processed in batch, and only repeating the operation of the fifth step and the operation of the sixth step.
Example 2
If there is a batch of parts to be machined on which it is required to machine a shaft or cylinder, defining a cylinder diameter of 50mm, with a tolerance size of +0.06 to-0.02 mm; there exists a part to be inspected after machining, on which a cylinder with a diameter of 50.03mm is machined, taking as an example the measurement of the diameter tolerance of the cylinder on the part, the following steps are taken:
firstly, loosening a fastening connecting piece between a positioning block 9 and a fixing block 10 by using a screwdriver, and integrally moving the mounting positions of the positioning block 9 and the fixing block 10 on the right side of a main body 1 so as to adjust the A size between a positioning shaft 3 and a moving shaft 2 to 49.98mm, wherein the size is checked by using an outside micrometer;
and secondly, the test is qualified, namely after the size of the A between the positioning shaft 3 and the moving shaft 2 is 49.98mm, a screwdriver is used for fastening the fastening connecting piece, so that the positioning block 9 and the fixing block 10 are fixedly arranged at the position.
And thirdly, zeroing a dial indicator 4 on the diameter tolerance measuring meter.
Fourthly, loosening the first threaded knob 15 and the second threaded knob 16, adjusting the vertical installation position of the moving shaft 2 in the slider 5, adjusting the vertical installation position of the positioning shaft 3 in the positioning block 9, enabling the length of the moving shaft 2 extending out of the bottom surface of the parallel correction block 6 and the length of the positioning shaft 3 extending out of the bottom surface of the fixing block 10 to be larger than 25mm, and ensuring that the moving shaft 2 and the positioning shaft 3 are flush with each other in bottom surfaces.
Fifthly, inserting a moving shaft 2 and a positioning shaft 3 of the diameter tolerance measuring meter into two sides of the cylinder, and respectively contacting the outer walls of the moving shaft 2 and the positioning shaft 3 with two side surfaces of the cylinder.
Sixthly, reading data on the dial indicator; because the diameter of the cylinder is 50.03mm, and the dimension A between the moving shaft 2 and the positioning shaft 3 is 49.98mm, the moving shaft 2 drives the sliding block 5 to slide 0.05mm towards the left under the interference of the cylinder; at the moment, the collision end of the dial indicator 4 contracts by 0.05mm in the same direction according to the sliding of the sliding block 5, and the pointer of the dial indicator 4 correspondingly rotates by 5 scales counterclockwise according to the contraction distance of the collision end; it should be noted that: when the pointer rotates 5 scales anticlockwise, the size of the column is 0.05mm larger than the previously set A size between the moving shaft 2 and the positioning shaft 3, and the size of the inner hole M is as follows: 49.98+ 0.05-50.03 mm;
and measuring the dimensional tolerance of the type of cylinders on all the parts processed in batch by only repeating the operation of the fifth step and the operation of the sixth step.
The utility model discloses an all default of unit about size description in the application file is: mm.
The embodiments given above are preferred examples for implementing the present invention, and the present invention is not limited to the above-described embodiments. Any non-essential addition and replacement made by the technical features of the technical solution of the present invention by those skilled in the art all belong to the protection scope of the present invention.
Claims (8)
1. A diameter tolerance measuring meter is characterized by comprising a main body (1), a movable shaft (2) and a positioning shaft (3) which are respectively arranged at the left end and the right end of the main body, and a dial indicator (4) driven by the movable shaft (2);
the sliding block (5) is connected with the moving shaft (2) and is limited by circular holes which are communicated with the main body (1) and the parallel correction block (6) and are larger than the curved surface diameter of the moving shaft (2); the slide block (5) is arranged in the guide rail (7), and the left side surface and the right side surface of the slide block are respectively abutted against the abutting end of the dial indicator (4) and the elastic pin (8);
the positioning shaft (3) penetrates through the positioning block (9) and the fixing block (10) and is fixed on the positioning block (9); the dimension A between the moving shaft (2) and the positioning shaft (3) is the minimum limit value of the diameter tolerance of the cylinder to be measured; the dimension B between the moving shaft (2) and the positioning shaft (3) is the maximum limit value of the tolerance of the diameter of the inner hole to be measured; during measurement, the movable shaft (2) and the positioning shaft (3) are inserted into two sides of the cylinder to be measured or into an inner hole, and the position change of the movable shaft (2) is transmitted to the dial indicator (4) through the sliding block (5) and is converted into the scale change of a pointer of the dial indicator (4).
2. A diameter tolerance measuring meter according to claim 1, characterized in that the abutting end of the dial indicator (4) exerts a rightward abutting force on the slide (5); the dial indicator is detachably fixed on the main body (1) through a first clamping block (11); the elastic pin (8) is connected to the elastic pin seat (12) through a spring, and the elastic pin seat (12) is fixed on the main body (1) through a second clamping block (13); the elastic pin (8) exerts leftward resisting force on the slider (5).
3. A diameter tolerance measuring gauge according to claim 1, characterized in that the guide rail (7) and the parallel correcting block (6) are fixedly mounted on the body (1), respectively.
4. A diameter tolerance measuring meter according to claim 1, characterized in that the main body (1) is provided with a rectangular hole (14), and the positioning block (9) and the fixing block (10) are fixedly mounted on the main body (1) through a fastening connection penetrating the rectangular hole (14).
5. A diameter tolerance measuring meter according to claim 4, characterized in that the fixed block (10) is constructed by two rectangular blocks stacked one above the other, the rectangular block above the fixed block (10) is embedded in the rectangular hole (14), and the width of the rectangular block is matched with the width of the rectangular hole (14).
6. A diameter tolerance measuring gauge according to claim 1, characterized in that the upper end of the slider (5) is provided with a cylindrical sleeve, the side wall of which is provided with a first threaded knob (15) for fastening the moving shaft (2).
7. A diameter tolerance measuring gauge according to claim 1, characterized in that the upper end of the positioning block (9) is provided with a cylindrical sleeve, the side wall of which is provided with a second threaded knob (16) for fastening the positioning shaft (3).
8. A diameter tolerance measuring gauge according to claim 1, characterized in that the positioning shaft (3) is adjusted in the a or B dimension by changing the fixing position of the positioning block (9) and the fixing block (10) on the main body (1);
when the diameter tolerance of the cylinder is measured, the dimension A between the moving shaft (2) and the positioning shaft (3) is adjusted, the positioning shaft (3) is kept fixed and is inserted into two sides of the cylinder to be measured together with the moving shaft (2), and the outer walls of the moving shaft (2) and the positioning shaft (3) are respectively contacted with two sides of the cylinder to be measured; the moving shaft (2) drives the sliding block (5) to slide towards the left side under the collision of the cylinder, the collision end of the dial indicator (4) keeps contracting in the same direction and at the same distance according to the sliding mode of the sliding block (5), a pointer of the dial indicator (4) rotates corresponding scales according to the contraction distance of the collision end, and the tolerance size of the measured cylinder is read on the dial indicator;
when the diameter tolerance of the inner hole is measured, the size B between the moving shaft (2) and the positioning shaft (3) is adjusted, the positioning shaft (3) is kept fixed and is inserted into the inner hole to be measured together with the moving shaft (2), and the outer walls of the moving shaft (2) and the positioning shaft (3) are respectively contacted with the cylindrical side surface of the inner hole; the moving shaft (2) drives the sliding block (5) to slide rightwards under the conflict of the curved surface of the inner hole of the workpiece, the conflict end of the dial indicator (4) keeps the extension in the same direction and at the same distance according to the sliding mode of the sliding block (5), the pointer of the dial indicator (4) rotates corresponding scales according to the extension distance of the conflict end, and the tolerance size of the measured inner hole is read on the dial indicator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922066654.5U CN211373443U (en) | 2019-11-26 | 2019-11-26 | Diameter tolerance measuring meter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922066654.5U CN211373443U (en) | 2019-11-26 | 2019-11-26 | Diameter tolerance measuring meter |
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| CN211373443U true CN211373443U (en) | 2020-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922066654.5U Active CN211373443U (en) | 2019-11-26 | 2019-11-26 | Diameter tolerance measuring meter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116448039A (en) * | 2022-01-07 | 2023-07-18 | 南通市计量检定测试所 | Shallow mouth internal diameter measuring device with automatic elastic interference measuring head |
-
2019
- 2019-11-26 CN CN201922066654.5U patent/CN211373443U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116448039A (en) * | 2022-01-07 | 2023-07-18 | 南通市计量检定测试所 | Shallow mouth internal diameter measuring device with automatic elastic interference measuring head |
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