CN212724471U - Shaft measurement skill training device for teaching - Google Patents
Shaft measurement skill training device for teaching Download PDFInfo
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- CN212724471U CN212724471U CN202021926042.5U CN202021926042U CN212724471U CN 212724471 U CN212724471 U CN 212724471U CN 202021926042 U CN202021926042 U CN 202021926042U CN 212724471 U CN212724471 U CN 212724471U
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Abstract
The utility model discloses an axle type measurement skill training appliance for teaching, including basic shaft, adjustment shaft sleeve, cylinder axle sleeve and eccentric shaft sleeve, the basic shaft is the horizontal axis type, including roundness measurement section, bent axle measurement section and eccentric measurement section, the adjustment shaft sleeve is the round platform shape, has seted up a set of screw hole on the adjustment shaft sleeve, and the screw hole is furnished with the countersunk bolt, and the adjustment shaft sleeve is located on the roundness measurement section of basic shaft, adjusts the offset of adjustment shaft sleeve central axis and basic shaft central axis through the countersunk bolt of revolving in the screw hole; the crankshaft measuring section comprises two discs and a connecting shaft between the discs. By using the training device for teaching and practicing, a practicer can quickly and accurately master the basic method for inspecting shaft parts by using a measuring tool.
Description
Technical Field
The utility model relates to a measure teaching aid technical field, an axle type measuring skill training utensil for teaching specifically says so.
Background
The basic skill of engineering equipment maintenance is mainly generated through classroom theoretical teaching and actual equipment training operation, and particularly, in the aspect of inspection and measurement, no mature equipment with targeted training significance exists, so that some problems exist. Firstly, because the number of actual equipment is small, maintenance personnel cannot participate in sufficient skill training by everyone; secondly, the maintenance process is often complex, the maintenance time is often too long, so that maintenance personnel only know the operation process and do not understand the purpose of the operation process for the maintenance process and the content; ultimately these problems negatively impact the generation of inspection measurement skills by service personnel of the engineering equipment.
In engineering equipment repair, parts need to be inspected, and the technical conditions of parts need to be accurately mastered. The inspection by using the measuring tool mainly comprises the inspection of the size and the geometric shape of the part and the inspection of the deformation of the part. The axle type measurement content occupies the important part in engineering equipment maintenance process, and the inspection measurement content that relates to the axle type is more, and in daily maintenance training, the detection of axle type just seems to be especially important, according to common maintenance in-process axle type detection problem, can conclude its training content: shaft diameter (inner and outer), roundness, cylindricity, conicity, coaxiality runout (axial runout, radial runout), and the like. At present, shaft type measuring skill training appliances suitable for teaching and integrating various detection content training are lacked, some measurement learning and training need to be carried out on site in real objects, and teaching training efficiency and effect are not facilitated.
Disclosure of Invention
The utility model aims at providing an axle type measuring skill training utensil for teaching to the not enough among the above-mentioned prior art.
The utility model aims at realizing through the following technical scheme:
a shaft type measuring skill training device for teaching comprises a basic shaft, an adjusting shaft sleeve, a cylindrical shaft sleeve and an eccentric shaft sleeve, wherein the basic shaft is of a horizontal shaft type and comprises a roundness measuring section, a crankshaft measuring section and an eccentric measuring section, the adjusting shaft sleeve is of a circular truncated cone shape, a group of threaded holes are formed in the adjusting shaft sleeve, countersunk head bolts are matched with the threaded holes, the adjusting shaft sleeve is sleeved on the roundness measuring section, and the offset between the central axis of the adjusting shaft sleeve and the central axis of the basic shaft is adjusted by screwing the countersunk head bolts in the threaded holes; the crankshaft measuring section comprises two discs and a connecting shaft between the discs; the cylindrical shaft sleeve and the eccentric shaft sleeve are sleeved on the eccentric measuring section, the eccentric shaft sleeve is a conical pipe with a thick end and a thin end, the inner wall of the conical pipe is provided with internal threads, the surface of the eccentric measuring section is provided with external threads matched with the internal threads on the inner wall of the eccentric shaft sleeve, and the eccentric shaft sleeve is sleeved on the eccentric measuring section of the basic shaft through threaded connection; the inner diameter of the cylindrical shaft sleeve is between the outer diameter of the thin end and the outer diameter of the thick end of the eccentric shaft sleeve, the thin end of the eccentric shaft sleeve extends into the cylindrical shaft sleeve, and the cylindrical shaft sleeve is tightly jacked on the eccentric measuring section by screwing the eccentric shaft sleeve.
The utility model discloses in the further design, still include a pair of bearing, be equipped with V type groove on the bearing, the both ends of basic axle place in the V type inslot of bearing.
The utility model discloses in the further design, still include eccentric spindle nose, eccentric spindle nose one end is equipped with the spindle nose screw rod, the one end tip of foundation axle is equipped with the spindle nose connecting hole, the spindle nose connecting hole is the internal thread hole, the eccentric spindle nose is installed through the spindle nose screw rod of looks adaptation and spindle nose connecting hole the tip of foundation axle, eccentric spindle nose are the same with the axle center of foundation axle.
The utility model discloses in the further design, still include interior hexagonal twist grip, any end of basic axle is equipped with interior hexagonal heavy groove, interior hexagonal twist grip with interior hexagonal heavy groove looks adaptation.
The utility model discloses in the further design, above-mentioned eccentric bushing has two, and the eccentricity is 0.2mm and 0.3mm respectively.
The utility model discloses in the further design, the circularity measurement section of above-mentioned basic axle still is equipped with conical surface and the unequal cylindrical surface one of diameter and cylindrical surface two.
The utility model discloses following outstanding beneficial effect has:
the utility model discloses an axle type measuring skill training utensil cooperation measuring tool for teaching is used for the exercise and the examination of axle internal diameter, external diameter of axle, circularity, cylindricity, axiality runout (axial runout, radial runout). The training apparatus can exercise the following contents: measuring the length of a shaft shoulder, measuring the diameter of a shaft, measuring the run-out quantity of an end face, measuring the roundness of the shaft, measuring the cylindricity and measuring the run-out quantity of a radial direction. The utility model is used for axle type measuring skill training utensil simple structure of teaching can measure the project of training and synthesize comprehensively, and the content of measurement has adjustable variability, has strengthened the practicality and the validity of measuring the training, teaches and practises through using this training utensil, can make the practitioner fast, the accurate basic method who utilizes measuring tool to carry out the inspection to the axle part, is favorable to engineering equipment to maintain basic skill's teaching and training.
Drawings
FIG. 1 is a schematic structural diagram of a shaft-type measurement skill training instrument for teaching in the embodiment;
FIG. 2 is a schematic view of a basic shaft structure in the embodiment;
FIG. 3 is a schematic structural diagram of an adjusting sleeve in the embodiment;
FIG. 4 is a cross-sectional view of an embodiment adjustment sleeve;
FIG. 5 is a schematic structural view of an eccentric spindle head in the embodiment;
in the figure, 1-basic shaft, 2-adjusting shaft sleeve, 3-cylindrical shaft sleeve, 4-eccentric shaft sleeve, 5-roundness measuring section, 6-crankshaft measuring section, 7-eccentric measuring section, 8-threaded hole, 9-supporting seat, 10-V-shaped groove, 11-eccentric shaft head, 12-inner hexagonal rotating handle, 13-cylindrical surface I, 14-conical surface, 15-disc, 16-shaft head screw rod, 17-shaft head connecting hole, 18-connecting shaft and 19-cylindrical surface II.
Detailed Description
The present invention will be further explained with reference to the drawings and the embodiments.
Examples
Referring to the attached drawings 1 and 2, the shaft type measuring skill training device for teaching comprises a basic shaft 1, an adjusting shaft sleeve 2, a cylindrical shaft sleeve 3, an eccentric shaft sleeve 4, an inner hexagonal rotating handle 12 and a pair of supporting seats 9, wherein the basic shaft 1 is of a horizontal shaft type and comprises a roundness measuring section 5, a crankshaft measuring section 6 and an eccentric measuring section 7, the total length of the basic shaft 1 is 482mm, and the effective length of the supporting sections at two ends is removed by 450 mm. The supporting seat 9 is provided with a V-shaped groove 10, and two ends of the basic shaft 1 are placed in the V-shaped groove 10 of the supporting seat 9. The supporting seat 9 is mainly used for placing the basic shaft 1, the V-shaped groove 10 plays a stable role in placing the shaft, accuracy of measuring results is facilitated, two protruding platforms are designed above the side of the supporting seat 9 and used for placing gap measuring module equipment designed behind, and one supporting seat is multipurpose. The supporting seat 9 is provided with a mounting hole, and the supporting seat 9 can be fixed on the operating table top through bolts.
Referring to fig. 3 and 4, the adjusting shaft sleeve 2 is in a circular truncated cone shape, a group of threaded holes 8 are formed in the adjusting shaft sleeve 2, countersunk bolts are arranged in the threaded holes 8, the adjusting shaft sleeve 2 is sleeved on the roundness measuring section 5, and the offset between the central axis of the adjusting shaft sleeve 2 and the central axis of the base shaft 1 is adjusted by screwing the countersunk bolts in the threaded holes 8; the roundness measuring section 5 of the foundation shaft 1 is further provided with a conical surface 14, a first cylindrical surface 13 and a second cylindrical surface 19 which have different diameters, the conical surface 14 can be used for measuring taper, the first cylindrical surface 13 and the second cylindrical surface 19 are used for measuring cylindricity and roundness, and meanwhile, because the diameters of the first cylindrical surface 13 and the second cylindrical surface 19 are different, a step is formed between the first cylindrical surface 13 and the second cylindrical surface 19, and the step can be used for measuring and training the height difference of the cylindrical surfaces. The adjusting shaft sleeve 2 is mainly used for completing roundness measurement content training, the structural foundation of the adjusting shaft sleeve is in a round table shape, a middle shaft hole is slightly larger than the diameter of a basic shaft 1, four rows of eight holes parallel to a bus are formed in the side wall of the adjusting shaft sleeve, the holes are threaded holes 8 with the diameter of 8mm, eight 8mm hexagon socket countersunk head bolts are turned into different depths during assembling, the offset between the central axis of the adjusting shaft sleeve 2 and the axis of the basic shaft 1 is adjusted, the cross section profile of each base shaft 1 perpendicular to the adjusting shaft sleeve 2 is irregular and circular, the roundness measurement training purpose is achieved, the adjusting shaft sleeve has the design advantages that small offset can be completed through bolt adjustment, and the training measurement results are different.
The crankshaft measuring section 6 comprises two discs 15 and a connecting shaft between the discs 15. The vernier caliper can be used for training disc thickness measurement, disc distance measurement and crankshaft diameter measurement on the crankshaft measurement section, and the dial indicator can be used for training axial runout measurement.
The cylindrical shaft sleeve 3 and the eccentric shaft sleeve 4 are sleeved on the eccentric measuring section 7, the eccentric shaft sleeve 4 is a conical pipe with a thick end and a thin end, the inner wall of the conical pipe is provided with internal threads, the surface of the eccentric measuring section 7 is provided with external threads matched with the internal threads on the inner wall of the eccentric shaft sleeve 4, and the eccentric shaft sleeve 4 is connected on the eccentric measuring section 7 of the basic shaft 1 through a threaded connecting sleeve; the inner diameter of the cylindrical shaft sleeve 3 is between the outer diameter of the thin end and the outer diameter of the thick end of the eccentric shaft sleeve 4, the thin end of the eccentric shaft sleeve 4 extends into the cylindrical shaft sleeve 3, and the cylindrical shaft sleeve 3 is tightly pressed on the eccentric measuring section 7 by screwing the eccentric shaft sleeve 4. The eccentric shaft sleeve 4 can have various specifications, and the commonly used specifications are that the eccentric distance is 0.2mm and 0.3mm respectively. During the use, cooperation cylindrical shaft sleeve 3, overlap cylindrical shaft sleeve 3 on eccentric measurement section 7, then stretch into cylindrical shaft sleeve 3 intraductally with the little tip of 4 external diameters of eccentric shaft sleeve, revolve wrong eccentric shaft sleeve 4, with the tight cylindrical shaft sleeve right port in cylindrical shaft sleeve 3 tops, it screws up with the external screw thread cooperation on 4 inboard screw threads of eccentric shaft sleeve and the basic axle 1, reach cylindrical shaft sleeve 3 and the purpose that basic axle 1 produced the offset, then measure the training to cylindrical shaft sleeve 3 with instruments such as percentage table. The eccentric shaft sleeves 4 with different specifications can be replaced according to different training requirements.
An eccentric shaft head 11 can be further arranged at one end of the basic shaft 1, referring to fig. 5, a shaft head screw 16 is arranged at one end of the eccentric shaft head, a shaft head connecting hole 17 is arranged at one end of the basic shaft 1, the shaft head connecting hole 17 is an internal threaded hole, the eccentric shaft head 11 is arranged at the end of the basic shaft 1 through the shaft head screw 16 and the shaft head connecting hole 17 which are matched, and the eccentric shaft head 11 is the same as the axis of the basic shaft 1. The spindle head screw 16 and the spindle head connecting hole 17 can also adopt an inner hexagonal connection mode. The eccentric shaft head 11 can also have various specifications, and the eccentric distances of the eccentric shaft head 11 in the embodiment are 0.2mm and 0.3mm respectively. The eccentric shaft head can be used for designing a measurement training scheme for increasing the eccentricity of the basic shaft and is a measurement scheme for enabling the shaft center of the basic shaft to generate eccentricity. The diversity and complexity of the measurement training content is increased.
The inner hexagonal rotating handle 12 can be convenient for rotate the base shaft 1 during measurement, an inner hexagonal sinking groove is formed in any end part of the base shaft 1, and the inner hexagonal rotating handle 12 is matched with the inner hexagonal sinking groove. The end part of the inner hexagonal rotating handle 12 is inserted into the inner hexagonal sinking groove at the end part of the base shaft 1, and the base shaft 1 can be easily rotated by rotating the inner hexagonal rotating handle 12. In this embodiment, one end of the basic shaft 1 is provided with a shaft head connecting hole 17 for installing the eccentric shaft head 11, and the end surface of the other end is provided with an inner hexagonal sinking groove. Eccentric spindle nose 11 is detachable design, has also set up the heavy groove of hexagon socket at eccentric spindle nose 11 tip, like this, no matter whether use eccentric spindle nose 11, all can use hexagon socket head twist grip 12 to operate. The spindle head screw 16 on the eccentric spindle head 11 can also be designed into an inner hexagonal rod matched with the inner hexagonal sinking groove in size, so that the operation and the use are more convenient.
The training content that other spare part and measuring tool of cooperation can be accomplished in proper order has: roundness measurement, taper measurement, disc thickness measurement, disc space measurement, shaft diameter measurement, axial runout measurement, shaft sleeve length measurement, shaft sleeve inner diameter measurement, cylindricity measurement, radial measurement, runout measurement and the like. Meanwhile, the design of the crankshaft measuring section 6 simulated at the shaft terminal can also simulate the measurement of the diameter of the actual crankshaft in the narrow space.
The following is a teaching training operation reference scheme for carrying out measurement training by using the shaft measurement skill training instrument:
preparation of work
1) The two supporting seats 9 are taken out and put in proper positions on the table-board in parallel.
2) The two supports 9 are fixed by means of M10X 20mm bolts.
3) And taking out the shaft type measuring skill training device, and placing the shaft type measuring skill training device on the support after assembly.
(II) measurement of roundness and taper
(1) And measuring and adjusting the roundness of the shaft sleeve 2 by using a magnetic dial indicator.
1) The adjusting shaft sleeve 2 is fixed at any position through a countersunk head bolt.
2) The magnetic meter frame is fixed on the table-board, and the measuring head of the dial indicator is vertically pasted on the outer side of a certain measuring section of the adjusting shaft sleeve 2.
3) The dial is rotated to align the "0" position with the pointer.
4) The rotating handle is operated to rotate the measured shaft for a circle.
5) And half of the difference value between the maximum value and the minimum value of the indicator table in the rotating process is a roundness error value.
(2) Measuring the roundness of the conical surface 14 using a magnetic dial gauge
1) The magnetic meter frame is fixed on the table-board, and the dial indicator measuring head is vertically stuck to the outer side of a certain measuring section of the conical surface 14.
2) The dial is rotated to align the "0" position with the pointer.
3) The rotating handle is operated to rotate the measured shaft for a circle.
4) And half of the difference value between the maximum value and the minimum value of the indicator table in the rotating process is the roundness error value of the first measuring section.
Note that: the roundness error values of the adjustment sleeve 2 and the tapered surface 14 may vary, one being a fixed value. The offset between the central axis of the adjusting shaft sleeve 2 and the central axis of the basic shaft 1 is adjusted by screwing a countersunk head bolt in a threaded hole 8 on the adjusting shaft sleeve 2, so that the measured value is an adjustable variable quantity, and the practicability of measurement training is increased.
(3) Measuring taper of conical surface by vernier caliper
1) And taking out the vernier caliper.
2) The outer measuring jaw of the vernier caliper is tightly attached to the first cylindrical surface 13, and the caliper body is perpendicular to the first cylindrical surface 13.
3) Read out the first 13 diameter of the cylindrical surface and record the measurement (three measurements at the same location, take the average).
4) The length of the conical surface 14 is measured by means of a measuring jaw in a vernier caliper.
5) The small circle diameter of the cone 14 is measured with a vernier caliper outside gauge.
6) And calculating the ratio of the diameter difference of the first cylindrical surface 13 and the small circular diameter of the conical surface 14 to the length of the conical surface 14, namely the taper of the conical surface 14.
(4) Measuring the height difference between the first cylindrical surface 13 and the second cylindrical surface 19 by using a vernier caliper
1) And (3) abutting the first cylindrical surface 13 with the tail end of the depth gauge of the vernier caliper, and clamping the right side of the vernier caliper on the second cylindrical surface 19, wherein the vernier caliper is kept vertical to the measuring surface.
2) And reading the vernier caliper to obtain the height difference.
(III) measurement of thickness, distance, shaft diameter and axial runout
(1) Measuring the thickness of the disc at the crankshaft measuring section by using a vernier caliper
1) And taking out the vernier caliper.
2) The outside measuring jaw of the vernier caliper is tightly attached to the disc 15, and the caliper body is perpendicular to the disc 15.
3) The thickness of the disc 15 is read and the measured value is recorded (three measurements at the same position, averaged).
(2) Measuring crankshaft disc spacing using vernier caliper
1) The outer inner measuring claws of the vernier caliper are tightly attached to two sides of the shaft shoulder, and the caliper body is parallel to the shaft.
2) The distance is read and the measured value is recorded (three measurements at the same position, averaged).
(3) The diameter of the connecting shaft 18 is measured by an outside micrometer.
1) And taking out the outside micrometer.
2) The locking device of the micrometer is loosened, and the knob is rotated, so that the distance between the measuring anvil and the micrometer screw is slightly larger than the diameter of the connecting shaft 18.
3) The end faces of the measuring anvil and the micrometer screw are arranged on two sides of the connecting shaft 18, and the outside micrometer is kept perpendicular to the connecting shaft 18.
4) And (3) rotating the knob, and when the screw rod is close to an object, changing the rotary force measuring device until a click sound is heard, and then slightly rotating for 0.5-1 circle.
5) And screwing the locking device (preventing the screw from rotating when the micrometer is moved), and recording the numerical value.
6) And measuring three times by intersecting the same section at 60 degrees, and taking an average value to obtain the diameter of the connecting shaft.
(4) Axial runout quantity measurement by dial indicator
1) The magnetic meter frame is fixed on the table board, so that the measuring end of the dial indicator is vertical to the end surface (step type) of the disc 15 outside the measuring section of the crankshaft.
2) The dial is rotated to align the "0" position with the pointer.
3) The rotating handle is operated to rotate the measured end face for a circle.
4) And the difference value between the maximum value and the minimum value of the indicator in the rotating process is the axial runout.
(IV) measurement of inner diameter, cylindricity and radial runout of shaft sleeve
(1) Measuring the inside diameter of the cylindrical sleeve 3 with a vernier caliper
1) And taking out the vernier caliper.
2) And (3) fitting the outer side of the measuring claw in the vernier caliper with the inner diameter surface of the cylindrical shaft sleeve 3, enabling the measuring surface of the vernier caliper to be perpendicular to the measuring surface of the cylindrical shaft sleeve 3, preventing the vernier caliper from being inclined, and recording the reading.
3) And intersecting at 60 degrees, measuring for three times, and taking an average value to obtain the inner diameter of the cylindrical shaft sleeve 3.
(2) Measuring the inner diameter of the cylindrical shaft sleeve 3 by an inside micrometer
1) And taking out the inside micrometer.
2) The measuring tip measuring surface of which is supported on the measured surface of the cylinder sleeve 3.
3) And adjusting the micro-drum to enable the measuring surface on one side of the micro-drum to swing in the radial section of the hole, and finding out the minimum size.
4) The set screw was tightened and the reading was taken and recorded.
5) And intersecting at 60 degrees, measuring for three times, and taking an average value to obtain the inner diameter of the cylindrical shaft sleeve 3.
Note that: the two methods measure the inner diameter, whether the numerical values are the same in precision or not and what the reason for the difference of the numerical values is.
(3) Measuring cylindricity value of the cylindrical shaft sleeve 3 by utilizing a magnetic dial indicator
1) The magnetic meter frame is fixed on the table-board, and the measuring head of the dial indicator is vertically pasted on the edge of the first measuring surface of the cylindrical shaft sleeve 3.
2) The dial is rotated to align the "0" position with the pointer.
3) And (4) installing an eccentric shaft sleeve 4 with the diameter of 0.2mm, operating a rotating handle to rotate the measured shaft for a circle, and recording the maximum value and the minimum value.
4) And (3) measuring three different sections of the cylindrical shaft sleeve according to the steps 1-3, and respectively recording the maximum value and the minimum value.
5) The difference between the maximum value and the minimum value in the 6 data is the cylindricity of the cylindrical shaft sleeve 3.
6) And (4) installing an eccentric shaft sleeve 4 with the thickness of 0.3mm, repeating the steps, and measuring the cylindricity of the cylindrical shaft sleeve 3.
7) And (5) analyzing the change of cylindricity under different eccentric shaft sleeves.
(4) Measuring radial runout using magnetic dial gauge
1) The magnetic meter frame is fixed on the table board, so that the measuring end of the dial indicator is in contact with the measured shaft section and is perpendicular to the axis. The measured shaft section can be any shaft section, and the description of the measurement in the eccentricity measurement section 7 is selected here.
2) The dial is rotated to align the "0" position with the pointer.
3) The rotating handle is operated to rotate the measured end face for a circle.
4) And the difference value between the maximum value and the minimum value of the indicator in the rotating process is the axial runout.
And (V) after the operation is finished, withdrawing the shaft measuring skill training tool and the measuring tool.
The utility model discloses an axle type measuring skill training utensil not only measures the content diversified, moreover because following design for the measurement content has the variability:
1. the axis of the cylindrical shaft sleeve 3 is changed by the change of the eccentric shaft sleeve 4, so that the axial runout is not fixed.
2. The adjusting shaft sleeve 2 can form any relative position with the fixed shaft due to the matching of 8 adjusting screws, so that the change value of the measured roundness cylindricity is uncertain.
3. An eccentric shaft head 11 is arranged at one end of the basic shaft 1, so that the shaft center of the basic shaft 1 is eccentric. The diversity and complexity of the measurement training content is increased.
The utility model discloses a characteristics are uncertain of measurable quantity target. Because if the measured value is a fixed value, it is meaningless to always measure the value, and the measured value can be changed and uncertain, so that the measurement is more meaningful, and the measurement teaching training has the effect of being combined with practical application.
Through the practice, a practicer can quickly and accurately master the basic method for inspecting shaft parts by using the measuring tool.
Above is the utility model discloses a preferred embodiment, all rely on the utility model discloses the change that technical scheme made, produced functional action does not surpass the utility model discloses during technical scheme's scope, all belong to the utility model discloses a protection scope.
Claims (6)
1. The shaft type measuring skill training device for teaching is characterized by comprising a basic shaft (1), an adjusting shaft sleeve (2), a cylindrical shaft sleeve (3) and an eccentric shaft sleeve (4), wherein the basic shaft (1) is of a horizontal shaft type and comprises a roundness measuring section (5), a crankshaft measuring section (6) and an eccentric measuring section (7), the adjusting shaft sleeve (2) is of a circular truncated cone shape, a group of threaded holes (8) are formed in the adjusting shaft sleeve (2), the threaded holes (8) are provided with countersunk head bolts, the adjusting shaft sleeve (2) is sleeved on the roundness measuring section (5), and the offset between the central axis of the adjusting shaft sleeve (2) and the central axis of the basic shaft (1) is adjusted by screwing the countersunk head bolts in the threaded holes (8); the crankshaft measuring section (6) comprises two discs (15) and a connecting shaft between the discs (15); the cylindrical shaft sleeve (3) and the eccentric shaft sleeve (4) are sleeved on the eccentric measuring section (7), the eccentric shaft sleeve (4) is a conical pipe with a thick end and a thin end, an inner thread is arranged on the inner wall of the conical pipe, an outer thread matched with the inner thread on the inner wall of the eccentric shaft sleeve (4) is arranged on the surface of the eccentric measuring section (7), and the eccentric shaft sleeve (4) is sleeved on the eccentric measuring section (7) of the base shaft (1) through threaded connection; the inner diameter of the cylindrical shaft sleeve (3) is between the outer diameter of the thin end and the outer diameter of the thick end of the eccentric shaft sleeve (4), the thin end of the eccentric shaft sleeve (4) extends into the cylindrical shaft sleeve (3), and the cylindrical shaft sleeve (3) is tightly pressed on the eccentric measuring section (7) through screwing the eccentric shaft sleeve (4).
2. The shaft measurement skill training device for teaching as defined in claim 1, further comprising a pair of supporting seats (9), wherein V-shaped grooves (10) are formed in the supporting seats (9), and two ends of the basic shaft (1) are placed in the V-shaped grooves (10) of the supporting seats (9).
3. The shaft measurement skill training device for teaching as defined in claim 1, further comprising an eccentric shaft head (11), wherein one end of the eccentric shaft head (11) is provided with a shaft head screw (16), one end of the base shaft (1) is provided with a shaft head connecting hole (17), the shaft head connecting hole (17) is an internal threaded hole, the eccentric shaft head (11) is installed at the end of the base shaft (1) through the shaft head screw (16) and the shaft head connecting hole (17) which are matched, and the eccentric shaft head (11) and the base shaft (1) have the same shaft center.
4. The shaft measurement skill training tool for teaching as defined in claim 1, further comprising an inner hexagonal rotating handle (12), wherein any end of the basic shaft (1) is provided with an inner hexagonal sunken groove, and the inner hexagonal rotating handle (12) is matched with the inner hexagonal sunken groove.
5. Shaft measurement skill training aid for teaching purposes according to claim 1, characterized in that said eccentric sleeves (4) are two, with an eccentricity of 0.2mm and 0.3mm respectively.
6. The shaft-like measuring skill training aid for teaching as claimed in claim 1, characterized in that the roundness measuring section (5) of the basic shaft (1) is further provided with a conical surface (14) and a cylindrical surface one (13) and a cylindrical surface two (19) with different diameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021926042.5U CN212724471U (en) | 2020-09-07 | 2020-09-07 | Shaft measurement skill training device for teaching |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021926042.5U CN212724471U (en) | 2020-09-07 | 2020-09-07 | Shaft measurement skill training device for teaching |
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| CN212724471U true CN212724471U (en) | 2021-03-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111899632A (en) * | 2020-09-07 | 2020-11-06 | 中国人民解放军陆军工程大学 | Shaft measurement skill training device for teaching |
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2020
- 2020-09-07 CN CN202021926042.5U patent/CN212724471U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111899632A (en) * | 2020-09-07 | 2020-11-06 | 中国人民解放军陆军工程大学 | Shaft measurement skill training device for teaching |
| CN111899632B (en) * | 2020-09-07 | 2024-05-03 | 中国人民解放军陆军工程大学 | Shaft measurement skill training device for teaching |
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