CN114543611A - Step shaft part measuring device and measuring method thereof - Google Patents
Step shaft part measuring device and measuring method thereof Download PDFInfo
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- CN114543611A CN114543611A CN202210214064.6A CN202210214064A CN114543611A CN 114543611 A CN114543611 A CN 114543611A CN 202210214064 A CN202210214064 A CN 202210214064A CN 114543611 A CN114543611 A CN 114543611A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B3/00—Measuring instruments characterised by the use of mechanical techniques
- G01B3/22—Feeler-pin gauges, e.g. dial gauges
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- Length-Measuring Instruments Using Mechanical Means (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a step shaft part measuring device and a measuring method thereof, wherein the step shaft part measuring device comprises a meter type general length measuring tool and a base, the base comprises a meter mounting part and a part inserting part which are coaxially arranged at intervals, the meter mounting part is used for fixing a shaft sleeve of the meter type general length measuring tool, and the part inserting part is provided with a binding surface which is matched with a step surface of the step shaft part; after the step shaft part is inserted in place, the step surface is attached to the binding surface, and a measuring head of the watch type general length measuring tool is abutted to the end surface of the step shaft part; and comparing the measurement reading displayed by the meter type universal length measuring tool with the comparison reading, wherein if the measurement reading is consistent with the comparison reading, the step shaft part is qualified, and otherwise, the step shaft part is unqualified. The part inserting part is provided with the binding surface matched with the step surface, so that the step shaft part can be inserted in place, the influence of the curved surface shape of the step surface on length measurement is eliminated, and the accuracy of the measurement result is ensured.
Description
Technical Field
The invention relates to the technical field of measuring tools, in particular to a device and a method for measuring step shaft parts.
Background
For step shaft parts, in particular to step shaft parts with small planes and large curved surfaces at step surfaces, as shown in fig. 1, the step surfaces of the parts are small, and the curved surfaces at the step surfaces are large. When the distance between the step surface and the end surface is measured under the condition, the problems of inconvenience, large error, high cost, long time consumption and the like often occur.
The existing measurement methods generally comprise the following 3 types: 1) vernier caliper measures, because the step plane is little, and step department curved surface is big, hardly guarantees the straightness that hangs down of slide caliper for the step face during vernier caliper measures, and slide caliper easily inclines to lead to obvious error. When the part is clamped on a lathe for measurement, the part is limited by the space of the lathe and the holding posture of the vernier caliper, so that the problems of inconvenient measurement and the like exist. 2) The measurement of the three-coordinate measuring machine is unrealistic to be measured at any time due to the characteristics of expensive equipment, high production rate density and the like of the three-coordinate measuring machine. Because of the self characteristics of the equipment, the part needs to be placed on a measuring table for dotting to obtain the numerical values of a plurality of points of the two end surfaces to be measured at three spatial coordinate positions, and then the distance between the two end surfaces is obtained by a mathematical calculation method. The statistical result of the actual production process shows that the time for measuring 1 test part similar to the test part shown in the figure 1 is about 1min, the time consumption is long, the cost is high, and the measurement on a lathe cannot be realized. 3) The numerical control machine tool is matched with the dial indicator for measurement, when a part is clamped on the lathe, the dial indicator is installed and adjusted at a proper position of the lathe, after the dial indicator is marked on the end face 1, the hand-operated lathe moves an X shaft to enable the dial indicator to be marked on a step face, and when the number of the marked number is consistent twice, the hand-operated revolution is calculated to calculate the distance between the two end faces. The statistical results of the actual production process show that the method takes about 4min to measure 1 test part similar to the test part shown in FIG. 1, the time consumption is longer, and the cost is high.
Of course, many measuring tools based on optical principles, such as measuring equipment based on image processing and measuring equipment based on multi-wavelength decimal reconstruction method measuring principle, are available on the market, but all have the problem of high cost. For example, chinese patent application publication No. CN106247896A discloses a gauge and a method for measuring the maximum and minimum axial lengths of a middle step shaft of a step shaft, the axial length of the middle step shaft of the measured step shaft is measured by the length from the left end surface of a clamping pin body to the left end surface of a through end measuring pin. For another example, the prior art, such as the device for quickly measuring the length and the size of a small-step shaft product disclosed in chinese patent with publication number CN201715982U, the device for measuring the length and the size of a step shaft disclosed in chinese patent with publication number CN211317198U, and the device for measuring the length and the size of a step shaft in a straight line disclosed in chinese patent with publication number CN202432961U, do not improve a step shaft part having a large curved surface at a step, and have large error in measurement results and low accuracy.
Disclosure of Invention
The invention aims to provide a step shaft part measuring device and a measuring method thereof, which are used for solving the problems in the prior art.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a step shaft part measuring device which comprises a meter type general length measuring tool and a base, wherein the base comprises a meter mounting part and a part inserting part which are coaxially arranged at intervals, the meter mounting part is used for fixing a shaft sleeve of the meter type general length measuring tool, and the part inserting part is provided with a binding surface matched with a step surface of the step shaft part; after the step shaft part is inserted in place, the step surface is attached to the binding surface, and a measuring head of the watch type general length measuring tool is abutted to the end surface of the step shaft part; and comparing the measurement reading displayed by the meter type universal length measuring tool with the comparison reading, wherein if the measurement reading is consistent with the comparison reading, the step shaft part is qualified, and otherwise, the step shaft part is unqualified.
Preferably, the general length measurement instrument of table formula is installed through the table clamp the table installation department, the table clamp includes the exposed core and the stiff end that the axial set up, the exposed core is used for the centre gripping the general length measurement instrument of table formula, the stiff end is installed in the table installation department.
Preferably, the clamping end comprises an arc-shaped clamping piece and a screw which is in threaded connection with the arc-shaped clamping piece to realize clamping.
Preferably, the meter mounting part includes a stepped hole, and an enlarged hole section of the stepped hole is in close fit with the outer diameter of the fixed end.
Preferably, the part insertion part comprises a counter bore, and the inner diameter of the counter bore is tightly matched with the outer diameter of the step shaft type part.
Preferably, the reducing section of the stepped hole is communicated with the counter bore to form a through hole penetrating through the base.
Preferably, the base comprises a large-diameter end and a small-diameter end which are positioned at two ends of the base, the large-diameter end is provided with the counter bore, and the small-diameter end is provided with the step hole.
Preferably, the gauge-type general length measuring tool adopts a dial indicator or a dial indicator.
The invention also provides a method for measuring the step shaft parts, which comprises the following steps:
manufacturing a test standard sample according to the technical requirements of the step shaft parts to be tested;
manufacturing a base according to a test standard sample piece, wherein the base comprises a surface mounting part and a part inserting part, and the part inserting part is provided with a binding surface matched with the step surface of the step shaft part;
installing and fixing a meter type universal length measuring tool in the meter installation part, inserting a test standard sample piece into the part insertion part, and tightly attaching the step surface and the attaching surface, wherein at the moment, the meter type universal length measuring tool displays a comparison reading;
inserting the step shaft type part into the part inserting part, wherein the step surface is tightly attached to the attaching surface, and at the moment, the meter type general length measuring tool displays a measurement reading;
and judging whether the step shaft parts are qualified or not, if the measurement reading is consistent with the comparison reading, determining that the step shaft parts are qualified, and if the measurement reading is inconsistent with the comparison reading, determining that the step shaft parts are not qualified.
Preferably, the control reading is set to 0.
Compared with the prior art, the invention has the following technical effects:
(1) according to the invention, the step shaft part is inserted into the part insertion part of the base, so that the end face of the step shaft part is abutted against the measuring head of the watch type general length measuring tool and is pushed to move to realize the measurement of the length between the end face and the step face;
(2) according to the invention, after the step shaft part to be measured is inserted in place, whether the step shaft part is qualified or not can be immediately judged, the operation is simple and convenient, the measurement efficiency can be greatly improved compared with the existing measurement scheme, and the measurement time consumption is reduced; in addition, when the device is applied, the device can be sleeved and used for measuring the step shaft parts fixed on a machine tool, so that the time and the operation steps for disassembling and clamping the step shaft parts are saved;
(3) the clamping end for clamping the meter-type universal length measuring tool comprises the arc-shaped clamping piece, and the arc-shaped clamping piece can clamp or release the meter-type universal length measuring tool by rotating the screw, so that measuring instruments with different precisions can be conveniently adjusted or replaced; except that the base needs to be manufactured independently, other parts can adopt standard parts, and the invention has the advantages of simple structure, easily obtained materials and strong replaceability; of course, the base can be customized according to different measuring objects, so that the purpose of wide application is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a stepped shaft component having a curved stepped surface;
FIG. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is a schematic diagram of an explosive structure according to the present invention;
FIG. 4 is a cross-sectional view of the base of the present invention;
FIG. 5 is a schematic view of a watch holder according to the present invention;
FIG. 6 is a flow chart of the preparation of the present invention;
FIG. 7 is a flow chart of the measurement according to the present invention;
wherein, 1, a table type general length measuring tool; 11. a dial plate; 12. a shaft sleeve; 13. a measuring rod; 14. a measuring head; 2. a watch clip; 21. a clamping end; 211. an arc-shaped clamping piece; 22. a fixed end; 3. a screw; 4. a base; 41. a watch mounting part; 411. a binding face; 42. a part insertion portion; 5. step shaft parts; 51. a step surface; 52. an end face.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a step shaft part measuring device and a measuring method thereof, which are used for solving the problems in the prior art.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 to 5, the invention provides a device for measuring stepped shaft parts, which comprises a watch type universal length measuring tool 1 and a base 4, wherein the watch type universal length measuring tool 1 is installed on the base 4 to realize fixation, and after the stepped shaft parts 5 are inserted in place, the distance between a step surface 51 and an end surface 52 of the stepped shaft parts 5 can be measured. Wherein, general length measurement instrument 1 of table formula can select dial indicator or amesdial etc. can convert axial displacement into the instrument that the reading shows, including dial plate 11, connect the axle sleeve 12 of dial plate 11 and the measuring stick 13 that can slide in axle sleeve 12 is established to the cover, is provided with measuring head 14 at the tip of measuring stick 13. The base 4 comprises a meter mounting part 41 and a part inserting part 42 which are coaxially arranged at intervals, wherein the meter mounting part 41 and the part inserting part 42 can be two parts which are arranged in a split way and are connected through a bracket or a connecting structure so as to determine the position relation between the meter mounting part 41 and the part inserting part 42; alternatively, the watch mounting portion 41 and the parts insertion portion 42 may be two parts of an integral structure. The watch mounting portion 41 is used for fixing the boss 12 of the watch type universal length measuring tool 1, and the boss 12 can be inserted into the watch mounting portion 41 with the measuring rod 13 and the measuring head 14 thereof facing the direction of the component insertion portion 42. The part inserting part 42 is provided with a binding surface 411 matched with a step surface 51 of the step shaft type part 5, and when the step shaft type part 5 is inserted into the part inserting part 42 and is inserted in place, the step surface 51 is bound with the binding surface 411, so that the position of the step surface 51 can be limited and can be used as a reference for length measurement; at this time, the measuring head 14 of the watch-type universal length measuring tool 1 abuts against the end surface 52 of the stepped shaft part 5, the measuring head 14 is pushed to contract toward the dial 11, and the measurement reading is displayed on the dial 11. And comparing the measurement reading displayed by the meter-type universal length measuring tool 1 with the comparison reading, wherein if the measurement reading is consistent with the comparison reading, the step shaft part 5 is qualified, and otherwise, the step shaft part is unqualified. The reference reading refers to a reading determined after inserting the test standard sample into the part insertion portion 42 and adjusting the position of the tabular general-purpose length measuring tool 1. According to the invention, the step shaft part 5 is inserted into the part insertion part 42 of the base 4, so that the end face 52 of the step shaft part 5 is abutted against the measuring head 14 of the watch-type general length measuring tool 1 and is pushed to move to realize the measurement of the length between the end face 52 and the step face 51, and the part insertion part 42 is provided with the binding face 411 matched with the step face 51, so that the step shaft part 5 can be inserted in place, the influence of the curved surface shape of the step face 51 on the length measurement is eliminated, and the accuracy of the measurement result is ensured.
As shown in fig. 2 to 3 and 5, the watch type universal length measuring tool 1 can be mounted on the watch mounting portion 41 through the watch clip 2, the watch clip 2 includes a clamping end 21 and a fixing end 22 which are axially arranged, wherein the clamping end 21 is used for clamping the watch type universal length measuring tool 1, and can be provided with a through hole for receiving the shaft sleeve 12, a screw 3 is arranged on a side wall of the through hole, the inserted shaft sleeve 12 is fixed in the through hole through rotating the screw 3, and other forms of clamping modes can also be adopted, generally, the detachable mode is adopted for fixing, and the position of the watch type universal length measuring tool 1 can be adjusted according to actual measurement conditions. The fixed end 22 can be inserted into the watch mounting part 41, and at this time, the watch mounting part 41 can be provided with a through hole for receiving the fixed end 22, and the fixed end 22 is fixed by interference fit or fixed by gluing.
The exposed core 21 of table clamp 2 can include interconnect's two lamella arc holding pieces 211, it sets up the clamping face relatively to have, can establish axle sleeve 12 cover between arc holding piece 211, the free end of one of them arc holding piece 211 is provided with the through-hole that runs through screw 3, the free end of another arc holding piece 211 is provided with the threaded mounting hole, threaded connection is in the threaded mounting hole of another arc holding piece 211 behind screw 3 passed the through-hole of an arc holding piece 211, can realize the tight operation of clamp of arc holding piece 211 through screw 3 of screwing, can realize the dismantlement of axle sleeve 12 again after loosening screw 3, can be convenient counter shaft sleeve 12 realizes position adjustment.
Referring to fig. 4, the meter mounting portion 41 of the base 4 includes a stepped hole, the fixed end 22 of the meter clip 2 can be inserted into the stepped hole, the expanded section of the stepped hole is tightly matched with the outer diameter of the fixed end 22 to effectively fix the meter clip 2, and the contracted section of the stepped hole is used for passing through the measuring rod 13 and the measuring head 14 thereof, so that the measuring head 14 can be abutted to the measured stepped shaft part 5.
The part inserting portion 42 of the base 4 comprises a counter bore, the step shaft part 5 can be inserted into the counter bore, the inner diameter of the counter bore can be tightly matched with the outer diameter of the step shaft part 5, so that the step shaft part 5 cannot radially shake or deflect after being inserted into the counter bore, the position fixing precision of the step shaft part 5 after being inserted in place can be guaranteed, and the precision of a measuring result is finally guaranteed.
Further, the reduced hole section of the stepped hole of the meter mounting portion 41 may communicate with the counter hole of the part insertion portion 42, so that a through hole penetrating the base 4 may be formed, in this case, the base 4 may adopt an integrated structure, a through hole may be excavated in the middle to implement a through design, and the meter mounting portion 41 and the part insertion portion 42 may be formed at both end portions of the base 4, respectively.
As shown in fig. 2 to 4, the base 4 may include a large diameter end and a small diameter end at two ends thereof, the large diameter end is provided with a counter bore for inserting the step shaft part 5, and the small diameter end is provided with a step bore for installing and fixing the gauge clip 2 of the gauge-type universal length measuring tool 1. The arrangement mode of the large-diameter end and the small-diameter end can enable the watch mounting portion 41 and the part inserting portion 42 of the base 4 to be conveniently distinguished, and reverse insertion is avoided during assembly. In addition, the watch-type universal length measuring tool 1 is arranged at the small-diameter end, so that the watch clip 2 can be fixed conveniently, and particularly, interference influence on the screwing and unscrewing operation of the screw 3 is avoided.
The gauge-type general length measuring tool 1 can adopt a dial indicator, a dial indicator or other precision instruments.
Referring to fig. 1 to 5 again, and fig. 6 to 7, the present invention further provides a method for measuring a step shaft part, wherein the measuring device described above can be applied in the measurement, and the method comprises the following steps:
the test standard sample is manufactured according to the technical requirements (size, tolerance, coaxiality and the like) of the step shaft part 5 to be tested, a more accurate measurement scheme in the prior art can be adopted for determining and measuring the size, and negative factors such as measurement time and the like do not need to be considered at the moment.
The base 4 is manufactured according to the standard test sample, the principle of a female die and a sub die can be used, the base 4 serving as the female die is sleeved outside the standard test sample serving as the sub die, the positions where the inner contour of the base 4 is matched with the outer contour of the standard test sample can be mutually attached, and the accuracy of determining the position relation between the standard test sample and the base 4 can be guaranteed. The base 4 comprises a meter mounting part 41 and a part inserting part 42, the meter mounting part 41 is used for mounting the meter-type universal length measuring tool 1, the part inserting part 42 is used for inserting the stepped shaft part 5, and the part inserting part 42 is provided with a binding surface 411 matched with a stepped surface 51 of the stepped shaft part 5, so that the position relation between the stepped shaft part 5 and the base 4 can be further ensured.
The gauge-type universal length measuring tool 1 is mounted and fixed in the gauge mounting portion 41, the test standard is inserted into the part insertion portion 42, the step surface 51 is closely attached to the attaching surface 411, and at this time, the reading displayed by the gauge-type universal length measuring tool 1 serves as a reference reading.
And taking out the test standard sample piece, inserting the step shaft type part 5 into the part inserting part 42, tightly attaching the step surface 51 to the attaching surface 411, and taking the reading displayed by the meter-type universal length measuring tool 1 as a measurement reading at the moment.
And judging whether the step shaft part 5 is qualified or not by comparing the reading with the measurement reading, wherein the step shaft part is qualified if the measurement reading is consistent with the comparison reading, and the step shaft part is unqualified if the measurement reading is inconsistent with the comparison reading.
After inserting test standard sample piece into part insertion portion 42, can debug the reading of the general length measurement instrument of table formula 1, general length measurement instrument of table formula 1 can adopt percentage table or amesdial, can set up the comparison reading to 0 this moment, no matter 5 length of step axle class part processed is greater than or is less than the standard value, all can confirm through the reading of dial plate 11, can also the accurate error range of confirming to provide reliable data for the part reworking process.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. The utility model provides a step axle class part measuring device which characterized in that: the base comprises a meter type universal length measuring tool and a base, wherein the base comprises a meter mounting part and a part inserting part which are coaxially arranged at intervals, the meter mounting part is used for fixing a shaft sleeve of the meter type universal length measuring tool, and the part inserting part is provided with a binding surface matched with a step surface of a step shaft part; after the step shaft part is inserted in place, the step surface is attached to the binding surface, and a measuring head of the watch type general length measuring tool is abutted to the end surface of the step shaft part; and comparing the measurement reading displayed by the meter type universal length measuring tool with the comparison reading, wherein if the measurement reading is consistent with the comparison reading, the step shaft part is qualified, and otherwise, the step shaft part is unqualified.
2. The stepped shaft part measuring device according to claim 1, characterized in that: the general length measurement instrument of table formula is installed through the table clamp the table installation department, the table clamp is including the exposed core and the stiff end of axial setting, the exposed core is used for the centre gripping the general length measurement instrument of table formula, the stiff end is installed in the table installation department.
3. The stepped shaft part measuring device according to claim 2, characterized in that: the clamping end comprises an arc-shaped clamping piece and a screw which is in threaded connection with the arc-shaped clamping piece to realize clamping.
4. The stepped shaft part measuring device according to claim 2 or 3, characterized in that: the table installation portion comprises a step hole, and the expanding section of the step hole is tightly matched with the outer diameter of the fixed end.
5. The stepped shaft part measuring device according to claim 4, characterized in that: the part inserting part comprises a counter bore, and the inner diameter of the counter bore is tightly matched with the outer diameter of a step shaft of the step shaft type part.
6. The stepped shaft part measuring device according to claim 5, characterized in that: and the shrinkage section of the stepped hole is communicated with the counter bore to form a through hole penetrating through the base.
7. The stepped shaft part measuring device according to claim 6, characterized in that: the base comprises a large-diameter end and a small-diameter end, the large-diameter end and the small-diameter end are located at two ends of the base, the large-diameter end is provided with the counter bore, and the small-diameter end is provided with the step hole.
8. The stepped shaft part measuring device according to claim 7, characterized in that: the gauge type general length measuring tool adopts a dial indicator or a dial indicator.
9. A method for measuring stepped shaft parts is characterized by comprising the following steps:
manufacturing a test standard sample according to the technical requirements of the step shaft parts to be tested;
manufacturing a base according to a test standard sample piece, wherein the base comprises a surface mounting part and a part inserting part, and the part inserting part is provided with a binding surface matched with the step surface of the step shaft part;
installing and fixing a meter type universal length measuring tool in the meter installation part, inserting a test standard sample piece into the part insertion part, and tightly attaching the step surface and the attaching surface, wherein at the moment, the meter type universal length measuring tool displays a comparison reading;
inserting the step shaft part into the part insertion part, wherein the step surface is tightly attached to the attachment surface, and at the moment, the meter-type universal length measuring tool displays a measurement reading;
and judging whether the step shaft parts are qualified or not, if the measurement reading is consistent with the comparison reading, determining that the step shaft parts are qualified, and if the measurement reading is inconsistent with the comparison reading, determining that the step shaft parts are not qualified.
10. The method for measuring stepped shaft parts according to claim 9, characterized in that: the control reading was set to 0.
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| CN202210214064.6A CN114543611B (en) | 2022-03-07 | 2022-03-07 | Step shaft part measuring device and measuring method thereof |
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| CN202210214064.6A CN114543611B (en) | 2022-03-07 | 2022-03-07 | Step shaft part measuring device and measuring method thereof |
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