CN115157023B - Workpiece in-place detection device and method for cylindrical grinding machine - Google Patents
Workpiece in-place detection device and method for cylindrical grinding machine Download PDFInfo
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- CN115157023B CN115157023B CN202210794719.1A CN202210794719A CN115157023B CN 115157023 B CN115157023 B CN 115157023B CN 202210794719 A CN202210794719 A CN 202210794719A CN 115157023 B CN115157023 B CN 115157023B
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- 238000001514 detection method Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000006698 induction Effects 0.000 claims description 19
- 238000011065 in-situ storage Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 230000004323 axial length Effects 0.000 abstract description 3
- 239000000523 sample Substances 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
- B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/061—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically
- B24B41/062—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically between centres; Dogs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/02—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The invention provides a workpiece in-place detection device and method for a cylindrical grinding machine, aiming at the problems that when the cylindrical grinding machine adopts a centre to clamp a workpiece for grinding, whether the clamping state of the workpiece is in place normally or not and whether the axial length of the workpiece is qualified or not can not be automatically detected.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a workpiece in-place detection device and method for a cylindrical grinding machine.
Background
Along with the continuous deepening of the industrial automation degree, the demands of people on improving the production efficiency and the yield of the machine and reducing the labor intensity of personnel are increased day by day. Automatic functions such as automatic feeding and discharging of the cylindrical grinding machine and the like become inevitable choices for batch production of parts, and the consequent problem of in-place detection of workpieces is an important link.
At present, workpiece in-place detection devices can be divided into two categories, one is a detection device using a contact probe as a core component, and the other is a detection device based on various proximity sensors. The contact probe can basically realize automation, but the cost of the probe is high, and the thin probe is easy to bend or damage when being subjected to a large acting force due to the contact.
For a cylindrical grinding machine, a centre is often used for clamping a workpiece for grinding; when the cylindrical grinding machine automatically loads and unloads, whether workpieces exist between the centers, whether the axial size of the workpieces is qualified or not and whether the workpieces are normally clamped between the centers or not need to be determined. By adopting a contact probe detection mode, whether the workpiece is clamped normally between the apexes is difficult to detect; and by adopting a sensor mode, no related technical scheme provides specific detection logic in the prior published documents, and whether workpieces exist between the apexes, whether the axial size of the workpieces is qualified or not and whether the workpieces are normally clamped between the apexes or not can be effectively judged.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a workpiece on-site detection device and method for a cylindrical grinding machine.
The technical scheme of the invention is as follows:
the workpiece in-place detection device for the cylindrical grinding machine comprises a support, a sensor assembly, a position moving assembly and a proximity body;
the support is fixedly arranged on the tailstock body of the cylindrical grinding machine, a structure for the sensor assembly to move is arranged on the support, and the moving direction of the sensor assembly is parallel to the axial direction of the tip;
the sensor assembly comprises a first sensor and a second sensor, is arranged on the bracket and can move along the bracket in a direction parallel to the axial direction of the tip under the driving of the position moving assembly;
the approaching body is fixed at the position of the outer end of the overall axial direction of the tip of the tailstock body of the cylindrical grinding machine, and is provided with two sensing ends which are respectively used for being matched with the first sensor and the second sensor to realize signal sensing detection.
Further, the support is provided with a moving guide rail parallel to the axial direction of the tip, and the sensor assembly is mounted on the guide rail and can move along the guide rail.
Further, the support is provided with a scale which can measure the moving distance of the sensor assembly on the guide rail.
Furthermore, the sensor assembly further comprises a mounting block, and the first sensor and the second sensor are respectively mounted on the respective mounting blocks and can move in the mounting blocks along the axes of the sensors to adjust the sensing distance between the sensors and the approaching body.
Furthermore, the position moving assembly comprises an adjusting screw and a stop block fixed on the support, the stop block is fixed at two ends of the support and is provided with a through hole with the axial direction parallel to the moving direction of the sensor assembly, the adjusting screw penetrates through the through hole and is in clearance fit with the through hole, and the axial limit of the adjusting screw relative to the stop block is realized through a split washer and a boss of the adjusting screw; the adjusting screw thread section is connected with the sensor assembly, and the sensor assembly moves in the direction parallel to the axial direction of the tip through rotation of the adjusting screw.
Further, the width A of the sensing end matched with the first sensor along the axial direction of the tip is determined according to the distance S between the limit position a of the cylindrical grinding machine tailstock body tip moving inwards and the position b of the cylindrical grinding machine tailstock body tip after the workpiece with qualified size is correctly clamped, and the width A is not less than the distance S.
Further, the two sensing ends of the proximity body have different thicknesses in the axial direction of the sensor, and the thickness of the inner sensing end is thinner than that of the outer sensing end.
The method for detecting the workpiece in place by using the device comprises the following steps:
step 1: adjusting the axial positions of the first sensor and the second sensor according to the positions of the proximity body induction ends to enable the vertical distances between the first sensor and the second sensor and the corresponding proximity body induction ends to meet the requirement of induction distances;
and 2, step: correctly installing a workpiece with qualified size on an outer circle grinding machine; the position adjusting and moving assembly is used for adjusting the position of the first sensor, wherein the first sensor moves from inside to outside from the inner side of the sensing end at the inner side, and the position of the first sensor is preliminarily fixed when the signal is just from no signal to the signal; the second sensor between the two induction ends moves from inside to outside, and when a signal is just generated from no signal, the position of the second sensor is preliminarily fixed;
and step 3: according to the allowable error size range +/-t of the workpiece, moving the first sensor inwards by a distance t and then fixing the position of the first sensor, and moving the second sensor outwards by the distance t and then fixing the position of the second sensor;
and 4, step 4: workpiece in-situ detection is performed according to the following logic:
if the first sensor has no signal and the second sensor has a signal, the workpiece with a qualified size is clamped by the cylindrical grinding machine, and the workpiece is normally clamped between the centers;
if the first sensor has a signal, the fact that the cylindrical grinding machine does not clamp the workpiece or the workpiece is unqualified in size is indicated, and the axial size is too short;
if the second sensor has no signal, the clamping posture of the workpiece between the centers is incorrect, or the size of the workpiece is unqualified, and the axial size is overlong.
Advantageous effects
The invention provides a workpiece in-place detection device and method for a cylindrical grinding machine, aiming at the problems that when the cylindrical grinding machine adopts a centre to clamp a workpiece for grinding, whether the clamping state of the workpiece is in place or not and whether the axial length of the workpiece is qualified or not can not be automatically detected.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a cross-sectional view of a workpiece in-situ detection apparatus;
FIG. 2 is a schematic diagram of a workpiece in-place detection device for the cylindrical grinding machine;
FIG. 3 is a schematic view of a normal state of the position of the workpiece;
FIG. 4 is a schematic view of a no-workpiece state;
FIG. 5 is a schematic view showing an abnormal state of the position of the workpiece;
the names and designations of the components shown in the drawings are as follows:
1-a scaffold; 2-a first adjusting screw; 3-a first split retaining ring; 4-a first mounting block; 5-a first sensor; 6-fixing screws; 7-a chute; 8-a second sensor; 9-a second split washer; 10-a second adjusting screw; 11-a second stop; 12-a second mounting block; 13-an access body; 14-first stop.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The invention provides a workpiece in-place detection device for a cylindrical grinding machine, aiming at the problems that when the cylindrical grinding machine adopts a centre to clamp a workpiece for grinding, whether the clamping state of the workpiece is in place or not can not be automatically detected, and whether the axial length of the workpiece is qualified or not, and the workpiece in-place detection device comprises a support 1, a sensor assembly, a position moving assembly and an approaching body 13. By adjusting the relative position of the sensor assembly and the approaching body, when the approaching body fixedly connected with the tip is in different axial positions, the system judges the current in-place state of the workpiece by detecting the logic state of the sensor assembly.
As shown in fig. 1 and fig. 2, the support 1 is fixedly installed on the tailstock body of the cylindrical grinding machine, the support 1 is provided with a structure for moving the sensor assembly, and the moving direction of the sensor assembly is parallel to the axial direction of the tip.
In this embodiment, the structure for the sensor assembly to move is a guide rail, the guide rail is parallel to the axial direction of the tip, and the sensor assembly is mounted on the guide rail and can move along the guide rail. In order to accurately determine the moving distance of the sensor assembly on the guide rail, a scale is arranged on the bracket and can measure the moving distance of the sensor assembly on the guide rail.
The sensor assembly comprises a first sensor and a second sensor, is arranged on the bracket and can move along the bracket in a direction parallel to the axial direction of the tip under the driving of the position moving assembly.
In this embodiment, in the sensor assembly, the first sensor and the second sensor are mounted on the guide rail of the bracket through respective mounting blocks. The installation block is internally provided with an installation hole perpendicular to the direction of the guide rail, the sensor is installed in the installation hole and can move along the axis of the sensor, and the purpose is to facilitate the adjustment of the sensing distance between the sensor and the approaching body.
In the embodiment, the position moving assembly comprises an adjusting screw and a stop block fixed on the support, the stop block is fixed at two ends of the support and is provided with a through hole which is axially parallel to the moving direction of the sensor assembly, the adjusting screw penetrates through the through hole and is in clearance fit with the through hole, and the axial limit of the adjusting screw relative to the stop block is realized through a split washer and a boss of the adjusting screw; the adjusting screw thread section is connected with the sensor assembly, and the sensor assembly moves in the direction parallel to the axial direction of the tip through rotation of the adjusting screw.
The approaching body is fixed at the position of the outer end of the overall axial direction of the tip of the tailstock body of the cylindrical grinding machine, and is provided with two sensing ends which are respectively used for being matched with the first sensor and the second sensor to realize signal sensing detection.
And the size of the induction end in the proximity body is designed in cooperation with detection logic, wherein the width A of the induction end matched with the first sensor along the axial direction of the tip is determined according to the distance S between the limit position a of the tip of the tailstock body of the cylindrical grinding machine moving inwards and the position b of the tip of the tailstock body of the cylindrical grinding machine after the workpiece with qualified size is correctly clamped, and the width A is not less than the distance S, so that when the tip of the tailstock body of the cylindrical grinding machine moves inwards to the limit position, the first sensor still has an induction signal.
In addition, the two sensing ends of the proximity body are different in thickness in the direction along the axial direction of the sensor, and the inner sensing end is thinner than the outer sensing end. This is to avoid when the centre outwards moves, the sense end that originally cooperates with first sensor and second sensor to appear false triggering signal.
Thus, by adopting two position detection points, the allowable dimensional tolerance of the qualified workpiece can be set; the method can determine whether the workpiece exists or not, and can further determine whether the axial dimension of the workpiece is qualified or not. And according to the workpiece state detected by the sensor, when the position of the workpiece is abnormal, measures such as alarming, stopping and the like are automatically taken so as to reduce the maintenance time and improve the production efficiency. Meanwhile, when the sensor breaks down, the sensor can take measures of alarming, stopping and the like as the workpiece in-place detection is abnormal.
The method for detecting the workpiece in place by using the device comprises the following steps:
step 1: adjusting the axial positions of the first sensor and the second sensor according to the positions of the proximity body induction ends to enable the vertical distances between the first sensor and the second sensor and the corresponding proximity body induction ends to meet the requirement of induction distances;
step 2: correctly installing a workpiece with qualified size on an outer circle grinding machine, as shown in figure 3; the position adjusting moving assembly is used for adjusting the position of the first sensor, wherein the first sensor moves from the inner side of the sensing end at the inner side from inside to outside, and the position of the first sensor is preliminarily fixed when the first sensor just has signals from no signals to signals; the second sensor between the two induction ends moves from inside to outside, and when a signal is generated from no signal, the position of the second sensor is preliminarily fixed;
and step 3: according to the allowable error size range of the workpiece +/-0.5 mm, moving the first sensor inwards (namely leftwards in the drawing) by a distance of 0.5mm and then fixing the position of the first sensor, and moving the second sensor outwards (namely rightwards in the drawing) by a distance of 0.5mm and then fixing the position of the second sensor;
thus, the left boundary of the normal position of the tip is determined by the first sensor and the right boundary of the normal position of the tip is determined by the second sensor.
And 4, step 4: workpiece in-situ detection is performed according to the following logic:
if the first sensor has no signal and the second sensor has a signal, the workpiece with a qualified size is clamped by the cylindrical grinding machine, and the workpiece is normally clamped between the centers;
if the first sensor has a signal, the signal indicates that the cylindrical grinding machine does not clamp the workpiece or the workpiece is unqualified in size, the axial dimension is too short, as shown in figure 4,
if the second sensor has no signal, the clamping posture of the workpiece between the centers is incorrect, or the workpiece is unqualified in size, and the axial dimension is too long, as shown in fig. 5.
The practical test result shows that the invention can automatically judge the clamping state of the workpiece by adopting the matching of the proximity body and the two sensors, and by designing the size of the proximity body and setting the specific judgment logic, thereby greatly improving the production and processing efficiency of the machine tool and judging whether the axial size of the workpiece is qualified or not to a certain extent.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that those skilled in the art may make variations, modifications, substitutions and alterations within the scope of the present invention without departing from the spirit and scope of the present invention.
Claims (6)
1. The utility model provides a work piece detection device in place for cylindrical grinder which characterized in that: comprises a bracket, a sensor component, a position moving component and a proximity body;
the support is fixedly arranged on the tailstock body of the cylindrical grinding machine, a structure for the sensor assembly to move is arranged on the support, and the moving direction of the sensor assembly is parallel to the axial direction of the tip;
the sensor assembly comprises a first sensor and a second sensor, is arranged on the bracket and can move along the bracket in a direction parallel to the axial direction of the tip under the driving of the position moving assembly;
the proximity body is fixed at the position of the axial outer end of the whole tip of the tailstock body of the cylindrical grinding machine and is provided with two sensing ends which are respectively used for being matched with the first sensor and the second sensor to realize signal sensing detection;
the bracket is provided with a moving guide rail parallel to the axial direction of the tip, and the sensor assembly is arranged on the guide rail and can move along the guide rail;
the support is provided with a scale which can measure the moving distance of the sensor assembly on the guide rail.
2. The workpiece in-place detection device for the cylindrical grinding machine as recited in claim 1, wherein: the sensor assembly further comprises a mounting block, the first sensor and the second sensor are respectively mounted on the respective mounting block and can move along the axis of the sensor in the mounting block, and the sensing distance between the sensor and the approaching body is adjusted.
3. The workpiece in-place detection device for the cylindrical grinding machine as recited in claim 1, wherein: the position moving assembly comprises an adjusting screw and a stop block fixed on the support, the stop block is fixed at two ends of the support and is provided with a through hole which is axially parallel to the moving direction of the sensor assembly, the adjusting screw penetrates through the through hole and is in clearance fit with the through hole, and the axial limit of the adjusting screw relative to the stop block is realized through a split washer and a boss of the adjusting screw; the adjusting screw thread section is connected with the sensor assembly, and the sensor assembly moves in the direction parallel to the axial direction of the tip through rotation of the adjusting screw.
4. A machine for the manufacture of cylindrical bodies according to claim 1Work piece detection device in situ of grinding machine, its characterized in that: the width A of the induction end matched with the first sensor along the axial direction of the tip is according to the limit position of the tip of the tailstock body of the cylindrical grinding machine moving inwardsaThe top position of the tailstock body of the cylindrical grinding machine is correctly clamped with the workpiece with qualified sizebIs a distance ofSDetermining that the width A is not less than the distanceS。
5. The workpiece in-place detection device for the cylindrical grinding machine as recited in claim 1 or 4, wherein: the two induction ends of the proximity body have different thicknesses in the axial direction of the sensor, and the thickness of the inner induction end is thinner than that of the outer induction end.
6. A method for workpiece in-situ detection by using any one of the devices in claims 1-5, which is characterized by comprising the following steps: the method comprises the following steps:
step 1: adjusting the axial positions of the first sensor and the second sensor according to the positions of the proximity body induction ends to enable the vertical distances between the first sensor and the corresponding proximity body induction ends and the second sensor to meet the requirement of induction distance;
step 2: correctly installing a workpiece with qualified size on an outer circle grinding machine; the position adjusting and moving assembly is used for adjusting the position of the first sensor, wherein the first sensor moves from inside to outside from the inner side of the sensing end at the inner side, and the position of the first sensor is preliminarily fixed when the signal is just from no signal to the signal; the second sensor between the two induction ends moves from inside to outside, and when a signal is generated from no signal, the position of the second sensor is preliminarily fixed;
and step 3: according to the allowable error size range +/-t of the workpiece, moving the first sensor inwards by a distance t and then fixing the position of the first sensor, and moving the second sensor outwards by the distance t and then fixing the position of the second sensor;
and 4, step 4: workpiece in-situ detection is performed according to the following logic:
if the first sensor has no signal and the second sensor has a signal, the workpiece with a qualified size is clamped by the cylindrical grinding machine, and the workpiece is normally clamped between the centers;
if the first sensor has a signal, the fact that the cylindrical grinding machine does not clamp the workpiece or the workpiece is unqualified in size is indicated, and the axial size is too short;
if the second sensor has no signal, the clamping posture of the workpiece between the centers is incorrect, or the size of the workpiece is unqualified, and the axial size is overlong.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210794719.1A CN115157023B (en) | 2022-07-05 | 2022-07-05 | Workpiece in-place detection device and method for cylindrical grinding machine |
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| CN202210794719.1A CN115157023B (en) | 2022-07-05 | 2022-07-05 | Workpiece in-place detection device and method for cylindrical grinding machine |
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| CN115157023A CN115157023A (en) | 2022-10-11 |
| CN115157023B true CN115157023B (en) | 2022-12-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6658119B2 (en) * | 2016-03-08 | 2020-03-04 | 株式会社ジェイテクト | Grinder |
| CN108856734A (en) * | 2017-05-12 | 2018-11-23 | 苏州润桐专利运营有限公司 | A kind of automatic lathe for cylindrical work processing |
| CN107127362B (en) * | 2017-06-19 | 2019-07-02 | 宁波友智机械科技有限公司 | A kind of lathe process sync detection device |
| CN111811449B (en) * | 2020-09-03 | 2024-09-06 | 杭州集智机电股份有限公司 | Shaft part runout detection mechanism and detection method capable of automatically eliminating spindle error |
| CN215616921U (en) * | 2021-09-09 | 2022-01-25 | 浙江龙铁纵横轨道交通检修技术有限公司 | Full-automatic grinding device for axle of bullet train |
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Denomination of invention: A workpiece in position detection device and method for cylindrical grinding machines Granted publication date: 20221227 Pledgee: Bank of China Limited Xi'an High tech Development Zone Sub branch Pledgor: Shaanxi nobet Automation Technology Co.,Ltd. Registration number: Y2024980007542 |
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