CN113503862B - Spiral line detection method and special instrument thereof - Google Patents
Spiral line detection method and special instrument thereof Download PDFInfo
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- CN113503862B CN113503862B CN202110817602.6A CN202110817602A CN113503862B CN 113503862 B CN113503862 B CN 113503862B CN 202110817602 A CN202110817602 A CN 202110817602A CN 113503862 B CN113503862 B CN 113503862B
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- detected
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- main shaft
- heavy hammer
- cotton thread
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/12—Measuring inclination, e.g. by clinometers, by levels by using a single pendulum plumb lines G01C15/10
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
- G01C9/24—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble
Abstract
The invention discloses a spiral line detection method and a special instrument thereof, which comprises the steps of supporting an inner hole of a workpiece to be detected, coating a thin layer of mineral oil on an excircle of a position needing to detect the spiral line, and hanging a heavy hammer through a cotton thread; rotating the workpiece to be detected in the counterclockwise direction, and if the cotton thread suspending the heavy hammer does not move or the movement distance along the axis is less than or equal to 5mm within one minute, indicating that no spiral thread exists on the workpiece to be detected; if the moving distance along the axis is more than 5mm, the spiral line possibly exists, then the workpiece to be detected rotates clockwise, and if the cotton thread on which the heavy hammer is hung moves reversely along the axis and in the forward rotation within one minute, the spiral line exists on the workpiece to be detected; if the cotton thread hanging the heavy hammer moves along the axis in the same direction as the cotton thread in the positive rotation within one minute, the clamping of the workpiece to be detected is not horizontal, and the clamping of the workpiece to be detected needs to be readjusted; the invention has simple structure, convenient operation, stability, reliability and good detection effect.
Description
Technical Field
The invention relates to a spiral line detection method and a special instrument thereof, belonging to the technical field of mechanical detection.
Background
At present, in the process of grinding and machining an outer circle, a bearing, a motor shaft and the like which are produced can generate the situation that spiral lines are generated on the surface of a workpiece ground by an outer circle grinding machine due to vibration, ultra-poor contact rigidity, partial geometric precision distortion of a machine tool and the like, the spiral lines can be distinguished occasionally by naked eyes, but most of the spiral lines cannot be distinguished directly by the naked eyes, good detection means and equipment are not available for many years, only expensive precision instruments can be adopted for detection, the pitch and the depth of the spiral lines are measured, then whether the workpiece is qualified or not is judged, the detection cost is high, and the detection efficiency is not high.
Disclosure of Invention
The present invention is directed to provide a spiral streak detection apparatus and method for detecting a spiral streak, which overcome the above-mentioned shortcomings of the prior art.
The technical scheme provided by the invention is as follows: a detection method of spiral threads is characterized by comprising the following steps:
1) Leveling a working table surface: directly placing a leveling rod on a workbench surface of a base cleaned completely, respectively placing the leveling rod in two states of being parallel to a main shaft and being vertical to the main shaft in the length direction of the leveling rod, then adjusting an adjustable foot margin at the bottom of the base, adjusting bubbles of the leveling rod to the center, and adjusting the level of the workbench surface;
2) Adjusting the rotation precision of the main shaft: loosening the bolt of the nut, rotating the nut to enable the nut to move towards the front of the main shaft so as to apply pretightening force to the two bearings, accurately positioning the main shaft, detecting radial run-out of a centering journal of the main shaft and run-out of a bearing surface of a shaft shoulder of the main shaft by using a dial indicator, screwing the bolt if measured values are smaller than 0.01mm and the main shaft rotates smoothly, and finding the rotation precision of the main shaft;
3) The front hole type three-jaw chuck supports an inner hole of a workpiece to be detected, one end face of the workpiece to be detected is positioned, a thin layer of mineral oil is coated on the outer circle of the part, needing to be detected, of the workpiece to be detected, and a heavy hammer is hung on the outer circle of the part, needing to be detected, of the spiral thread through cotton threads;
4) A power switch of the control electric box is pressed, a power indicator lamp is turned on, and the power of the control electric box is switched on; a main shaft starting button switch of the control electronic box is pressed, a speed regulator switch of the control electronic box is turned on, and an indicator light on the speed regulator is on; a forward and reverse rotation switch of the control electric box is turned to a forward rotation position, the orthogonal speed regulating motor drives the workpiece to be detected to rotate in an anticlockwise direction, and a forward rotation indicator light is turned on; at the moment, the workpiece to be detected and the clamping jaws of the front hole type three-jaw chuck rotate anticlockwise together, whether cotton threads of the hanging heavy hammer move or not is observed, and if the cotton threads of the hanging heavy hammer do not move or the movement distance along the axis is less than or equal to 5mm within one minute, the workpiece to be detected does not have spiral grains; if the movement distance of the cotton thread on which the heavy hammer is hung along the axis is more than 5mm within one minute, the situation that spiral lines possibly exist is indicated, a forward and reverse rotation switch of the control electric box is turned to a reverse rotation position, the orthogonal speed regulating motor drives the workpiece to be detected to rotate clockwise, and the reverse rotation indicator lamp is on; at the moment, the workpiece to be detected and the clamping jaws of the front hole type three-jaw chuck rotate together clockwise, whether the cotton thread of the hanging heavy hammer moves or not is observed again, and if the cotton thread of the hanging heavy hammer moves along the axis in the reverse direction with the forward rotation within one minute, the workpiece to be detected has spiral grains; if the cotton thread hanging the heavy hammer moves along the axis in the same direction as the cotton thread in the positive rotation within one minute, the clamping of the workpiece to be detected is not horizontal, and the clamping of the workpiece to be detected needs to be readjusted;
5) The rotating speed of the AC and DC adjustable-speed motor is adjusted by adjusting a knob on a speed regulator of the control electric box.
Preferably, the rated rotating speed of the orthogonal speed regulating motor is 50-60r/min.
A special instrument for a detection method of spiral grains comprises a base, wherein a main shaft box part is fixed on the base through bolts; the right end face of the nut is connected with the left end face of the rear end bearing inner ring into a whole through the jacking sleeve, and the nut is provided with a bolt for locking the nut after the position of the nut is adjusted in place; the front end of the main shaft is fixedly connected with a front hole type three-jaw chuck used for clamping a workpiece to be detected through screws, and a heavy hammer is hung on the excircle of the spiral thread to be detected through cotton threads; the orthogonal speed regulating motor is arranged on the base through a support, a motor shaft of the orthogonal speed regulating motor is connected with the rear end of the main shaft through a coupler, and the control electric box is fastened on the base and used for controlling the operation of the orthogonal speed regulating motor.
Preferably, the base lower extreme install 4 adjustable lower margins, be convenient for adjust table surface level.
Preferably, the front end of the main spindle box cover and the upper part of the front hole type three-jaw chuck are provided with a three-jaw chuck protective cover made of organic glass materials.
Preferably, a protective cover is arranged above the coupler.
The invention has the beneficial effects that: the invention overcomes the defects of the existing detection means, the spindle is driven to rotate by the orthogonal motor, so that the workpiece to be detected is driven to rotate, and the weight suspended on the detection surface through the cotton thread moves axially relative to the workpiece to be detected due to the existence of the spiral thread, so that the same part can judge whether the workpiece is qualified or not by measuring the axial movement distance of the cotton thread suspended with the weight relative to the workpiece to be detected within a certain time at a fixed rotating speed. The invention has simple structure, convenient operation, stability, reliability and good detection effect, and is a necessary instrument for detecting the spiral thread in a bearing manufacturing factory. The method is mainly used for detecting the excircle spiral line of the large end of the inner ring of the conical bearing.
Drawings
FIG. 1 is a schematic structural diagram of a spiral streak detector of the present invention;
FIG. 2 is a side view of FIG. 1;
fig. 3 is a top view of fig. 1.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
as shown in fig. 1-3, a spiral streak detector comprises a base 1, wherein 4 adjustable feet 14 are installed at the lower end of the base 1, so that the level of a working table can be conveniently adjusted. The spindle box part is fixed on the base 1 through bolts and comprises a spindle box body 16, a spindle box cover 8 is mounted at the upper end of the spindle box body 16, a spindle 9 is mounted in the spindle box body 16, a front end bearing 15 is mounted at the front end of the spindle 9, the outer ring of the front end bearing 15 is fastened with the spindle box body 16 through a spindle front cover 11, a rear end bearing 17 is mounted at the rear end of the spindle 9, and the outer ring of the rear end bearing 17 is fastened with the spindle box body 16 through a spindle rear cover 7. The right end face of the nut 6 is connected with the left end face of the inner ring of the rear end bearing 17 into a whole through a top sleeve 18, and the nut 6 is provided with a bolt 5 for locking the nut 6 after the position of the nut 6 is adjusted in place. The front end of the main shaft 9 is fixedly connected with a front hole type three-jaw chuck 13 through screws for clamping a workpiece to be detected, and a heavy hammer 12 is hung on the excircle of the spiral thread to be detected through cotton threads. The front end of the main shaft box cover 8 and the upper part of the front hole type three-jaw chuck 13 are provided with a three-jaw chuck protective cover 10 made of organic glass materials. The orthogonal speed regulating motor 2 is arranged on the base 1 through a support 3, a motor shaft of the orthogonal speed regulating motor 2 is connected with the rear end of the main shaft 9 through a coupler 19, and a protective cover 4 is arranged above the coupler 19 to ensure the use safety of an operator. The control electric box 20 (Z724-D) is fastened on the base 1 by screws and is used for controlling the operation of the orthogonal speed regulating motor 2.
A detection method of spiral threads specifically comprises the following steps:
1) Leveling a working table surface: the leveling rod is directly placed on a worktable surface of a base cleaned completely, the leveling rod is respectively placed in two states of being parallel to the main shaft and being perpendicular to the main shaft in the length direction of the leveling rod, then the adjustable feet at the bottom of the base are adjusted, bubbles of the leveling rod are adjusted to the center, and therefore the worktable surface is adjusted to be level.
2) Adjusting the rotation precision of the main shaft: loosening the bolt of the nut, rotating the nut to enable the nut to move towards the front of the main shaft so as to apply pretightening force to the two bearings, accurately positioning the main shaft, detecting the radial run-out of a centering shaft neck of the main shaft and the run-out of a bearing surface of a shaft shoulder of the main shaft by using a dial indicator, and screwing the bolt if the measured values are less than 0.01mm and the main shaft rotates smoothly, so that the rotation precision of the main shaft is found.
3) The front hole type three-jaw chuck supports an inner hole of a workpiece to be detected to position one end face of the workpiece to be detected, a thin layer of mineral oil is coated on the excircle of the part, needing to be detected, of the workpiece to be detected, and a heavy hammer is hung on the excircle of the part, needing to be detected, of the spiral line through cotton threads.
4) A power switch of the control electric box is pressed, a power indicator lamp is turned on, and the power of the control electric box is switched on; a 'main shaft starting' button switch of the control electronic box is pressed, a speed governor switch of the control electronic box is turned on, and an indicator light on the speed governor is turned on; turning a 'forward and reverse rotation' switch of a control electric box to a 'forward rotation' position, driving a workpiece to be detected to rotate in an anticlockwise direction by a direct-alternating current speed regulating motor, and simultaneously turning a 'forward rotation' indicator light on; and at the moment, the workpiece to be detected and the clamping jaws of the front hole type three-jaw chuck rotate together anticlockwise, whether the cotton thread of the hanging heavy hammer moves or not is observed, and if the cotton thread of the hanging heavy hammer does not move or the movement distance along the axis is less than or equal to 5mm within one minute, the workpiece to be detected does not have the spiral thread. If the movement distance of the cotton thread on which the heavy hammer is hung along the axis is more than 5mm within one minute, the situation that spiral lines possibly exist is indicated, then a forward and reverse rotation switch of the control electric box is turned to a reverse rotation position, the orthogonal speed regulating motor drives the workpiece to be detected to rotate clockwise, and a reverse rotation indicator light is on; at this time, the workpiece to be detected and the clamping jaws of the front hole type three-jaw chuck rotate together clockwise, whether the cotton thread of the hanging heavy hammer moves or not is observed again, and if the cotton thread of the hanging heavy hammer moves along the axis in the reverse direction when the cotton thread rotates forwards within one minute, the fact that the workpiece to be detected has spiral threads is indicated. If the cotton thread hanging the heavy hammer moves along the axis in the same direction as the cotton thread in the forward rotation within one minute, the clamping of the workpiece to be detected is not horizontal, and the clamping of the workpiece to be detected needs to be readjusted.
5) The rated speed of the orthogonal speed regulating motor is 50-60r/min, and the speed of the orthogonal speed regulating motor is adjusted by adjusting a knob on a speed regulator of a control electric box.
It should be understood that parts of the specification not set forth in detail are well within the prior art. The above examples are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.
Claims (5)
1. A detection method of the spiral line, its specialized apparatus includes the base, pass the fixed main spindle box part of the bolt on the base, characterized by that, the main spindle box part includes the main spindle box, the upper end of the main spindle box is equipped with the main spindle box cover, the main spindle is fixed to the main spindle box, the front end of the main spindle is equipped with the front end bearing, the front end bearing outer lane is fastened with the main spindle box together through the main spindle front cover, the rear end of the main spindle is equipped with the rear end bearing, the rear end bearing outer lane is fastened with the main spindle box together through the main spindle rear cover; the right end face of the nut is connected with the left end face of the rear end bearing inner ring into a whole through the jacking sleeve, and the nut is provided with a bolt for locking the nut after the position of the nut is adjusted in place; the front end of the main shaft is fixedly connected with a front hole type three-jaw chuck used for clamping a workpiece to be detected through screws, and a heavy hammer is hung on the excircle of the spiral thread to be detected through cotton threads; the orthogonal speed regulating motor is arranged on the base through a bracket, a motor shaft of the orthogonal speed regulating motor is connected with the rear end of the main shaft through a coupler, and the control electric box is fastened on the base and used for controlling the operation of the orthogonal speed regulating motor; the detection method specifically comprises the following steps:
1) Leveling a working table surface: directly placing the level ruler on a workbench surface of a clean base, respectively placing the level ruler in two states of being parallel to the main shaft and perpendicular to the main shaft in the length direction of the level ruler, then adjusting an adjustable foot margin at the bottom of the base, adjusting bubbles of the level ruler to the center, and adjusting the level of the workbench surface;
2) Adjusting the rotation precision of the main shaft: loosening a bolt of a nut, rotating the nut to enable the nut to move towards the front of a main shaft so as to apply pretightening force to two bearings, accurately positioning the main shaft, detecting radial run-out of a centering journal of the main shaft and run-out of a bearing surface of a shaft shoulder of the main shaft by using a dial indicator, and if the measured values are less than 0.01mm, the main shaft rotates smoothly, the bolt is screwed down, and the rotation precision of the main shaft is found;
3) The front hole type three-jaw chuck supports an inner hole of a workpiece to be detected, one end face of the workpiece to be detected is positioned, a thin layer of mineral oil is coated on the excircle of the part, needing to be detected, of the workpiece to be detected, and a heavy hammer is hung on the excircle of the part, needing to be detected, of the spiral thread through cotton threads;
4) A power switch of the control electric box is pressed, a power indicator lamp is on, and the power of the control electric box is switched on; a main shaft starting button switch of the control electronic box is pressed, a speed regulator switch of the control electronic box is turned on, and an indicator light on the speed regulator is on; a forward and reverse rotation switch of the control electric box is turned to a forward rotation position, the orthogonal speed regulating motor drives the workpiece to be detected to rotate in an anticlockwise direction, and a forward rotation indicator light is turned on; at this time, the workpiece to be detected and the clamping jaws of the front hole type three-jaw chuck rotate anticlockwise together, whether the cotton thread of the hanging heavy hammer moves or not is observed, and if the cotton thread of the hanging heavy hammer does not move or the movement distance along the axis is less than or equal to 5mm within one minute, the workpiece to be detected does not have the spiral thread; if the movement distance of the cotton thread on which the heavy hammer is hung along the axis is more than 5mm within one minute, the situation that spiral lines possibly exist is indicated, a forward and reverse rotation switch of the control electric box is turned to a reverse rotation position, the orthogonal speed regulating motor drives the workpiece to be detected to rotate clockwise, and the reverse rotation indicator lamp is on; at the moment, the workpiece to be detected and the clamping jaws of the front hole type three-jaw chuck rotate together clockwise, whether the cotton thread of the hanging heavy hammer moves or not is observed again, and if the cotton thread of the hanging heavy hammer moves along the axis in the reverse direction when the cotton thread rotates forwards within one minute, the fact that the workpiece to be detected has spiral threads is indicated; if the cotton thread hanging the heavy hammer moves along the axis in the same direction as the cotton thread in the positive rotation within one minute, the clamping of the workpiece to be detected is not horizontal, and the clamping of the workpiece to be detected needs to be readjusted;
5) The rotating speed of the orthogonal speed regulating motor is adjusted by adjusting a knob on a speed regulator of the control electric box.
2. The method for detecting the spiral threads of the motor vehicle as claimed in claim 1, wherein the rated rotating speed of the orthogonal speed regulating motor is 50-60r/min.
3. The method for detecting the spiral thread according to claim 1, wherein 4 adjustable feet are arranged at the lower end of the base, so that the level of a workbench surface can be adjusted conveniently.
4. The method for detecting the screw thread according to claim 1, wherein a protective cover made of organic glass material is arranged at the front end of the spindle box cover and above the front hole type three-jaw chuck.
5. The method according to claim 1, wherein a protective cover is mounted above the coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110817602.6A CN113503862B (en) | 2021-07-20 | 2021-07-20 | Spiral line detection method and special instrument thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110817602.6A CN113503862B (en) | 2021-07-20 | 2021-07-20 | Spiral line detection method and special instrument thereof |
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| CN113503862A CN113503862A (en) | 2021-10-15 |
| CN113503862B true CN113503862B (en) | 2023-02-24 |
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