CN117182206B - Target grinding wheel matching method of gear grinding equipment and gear grinding equipment - Google Patents
Target grinding wheel matching method of gear grinding equipment and gear grinding equipment Download PDFInfo
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Abstract
The invention discloses a target grinding wheel matching method of gear grinding equipment and the gear grinding equipment, wherein the gear grinding equipment comprises the following steps: the device comprises a workpiece spindle, an identification device, a grinding wheel bin, a grinding wheel grabbing mechanism and a grinding wheel trimmer; the workpiece spindle is used for placing a gear workpiece, the identification device is used for identifying the gear workpiece, the grinding wheel grabbing mechanism is used for grabbing a grinding wheel in the grinding wheel bin, and the grinding wheel trimmer is used for carrying out appearance trimming on the grinding wheel. The target grinding wheel matching method comprises the steps of generating target grinding wheel image information through a gear workpiece identified by an identification device, then matching a grinding wheel to be processed closest to the target grinding wheel image information in a grinding wheel bin, and trimming the grinding wheel to be processed through a grinding wheel trimmer to obtain the target grinding wheel. According to the target grinding wheel matching method of the gear grinding equipment based on image recognition, which is disclosed by the embodiment of the invention, automatic operation can be realized, the production efficiency is greatly improved, and the production cost is reduced.
Description
Technical Field
The invention relates to the technical field of machine tools, in particular to a target grinding wheel matching method of gear grinding equipment and the gear grinding equipment.
Background
The spiral bevel gear transmission is widely applied to various industries such as automobiles, tractors, engineering machinery, robots, aerospace, ships and the like; meanwhile, with the gradual improvement of living standard, people put forward higher requirements on comfort of riding vehicles such as automobiles and operating various machines, so that gear parts which need grinding finish machining are more and more, and the traditional machine tool with single gear grinding function cannot meet the requirements in the aspects of labor cost, working efficiency, protection of people and the like.
The gear parts are generally ground by adopting grinding wheels, one gear workpiece is generally corresponding to a corresponding grinding wheel, and the replacement of the gear workpiece means that the grinding wheel also needs to be correspondingly changed, so that when a new gear workpiece is processed, the grinding wheel for grinding the new gear workpiece needs to be processed first; in the prior art, more factory products are needed, when a new gear workpiece product is replaced, the new gear workpiece does not necessarily have a corresponding grinding wheel, if the new gear workpiece does not have a corresponding grinding wheel, the grinding wheel is manually selected for grinding so as to obtain the grinding wheel for processing the new gear workpiece in the current general processing mode, but due to manual judgment, the grinding quantity is possibly large, the grinding time is long, and therefore the production efficiency is reduced, and the production cost is improved.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the target grinding wheel matching method of the gear grinding equipment and the gear grinding equipment, which can automatically select the grinding wheel and carry out the sand repairing treatment according to the parameters of the gear workpiece, thereby greatly improving the production efficiency and further reducing the production cost.
According to an embodiment of the present invention, a tooth grinding apparatus includes: the device comprises a workpiece spindle, an identification device, a grinding wheel bin, a grinding wheel grabbing mechanism and a grinding wheel trimmer; the workpiece spindle is used for placing gear workpieces, first workpiece identification codes are arranged on the gear workpieces, and the first workpiece identification codes corresponding to each gear workpiece are different; the identification device is used for identifying a first workpiece identification code of the gear workpiece; the grinding wheel grabbing mechanism is used for grabbing grinding wheels in the grinding wheel bin; the grinding wheel bin is internally provided with grinding wheels with various types, each type of grinding wheel in the grinding wheel bin is provided with a second workpiece identification code, and the second workpiece identification codes corresponding to each type of grinding wheel are different; the plurality of first workpiece identification codes and the plurality of second workpiece identification codes are in one-to-one correspondence; the grinding wheel dresser is used for carrying out appearance dressing on the grinding wheel.
According to an embodiment of the first aspect of the present invention, a target grinding wheel matching method includes the steps of:
acquiring the first workpiece identification code of the gear workpiece at the workpiece spindle position through the identification device;
matching the acquired first workpiece identification code with the second workpiece identification code acquired in advance, and selecting a grinding wheel according to the matched second workpiece identification code if the matching result is consistent, so as to acquire the target grinding wheel; if the acquired first workpiece identification codes are not matched with all the second workpiece identification codes, executing a grinding wheel matching processing strategy to obtain a target grinding wheel;
the grinding wheel matching processing strategy comprises the following steps:
generating target grinding wheel data information matched with the gear workpiece on the workpiece spindle position;
determining similarity between the target grinding wheel data information and the pre-acquired in-stock grinding wheel data information of each model of grinding wheel in the grinding wheel bin, and obtaining a similarity result; the in-store grinding wheel data information is obtained according to grinding wheels of various types in the grinding wheel bin, and the in-store grinding wheel data information corresponding to each type of grinding wheel is different; the second workpiece identification codes are in one-to-one correspondence with the in-store grinding wheel data information;
selecting a pre-processing grinding wheel from the grinding wheels with various models in the grinding wheel bin according to the similarity result;
and controlling the grinding wheel grabbing mechanism to grab the pre-machined grinding wheel and send the pre-machined grinding wheel to the grinding wheel dresser, and processing the pre-machined grinding wheel by the grinding wheel dresser according to the target grinding wheel data information to obtain the target grinding wheel.
The target grinding wheel matching method of the gear grinding equipment at least has the following beneficial effects:
by executing the matching processing strategy, a pre-processing grinding wheel with parameters closer to those of the image information of the workpiece to be matched can be obtained, compared with manual selection, the sand repairing amount is effectively reduced, the sand repairing time is shortened, and the processing efficiency is improved; by executing the matching processing strategy, the automatic selection of the pre-processing grinding wheel and the automatic trimming of the target grinding wheel are realized, so that the automatic processing of the new gear workpiece is realized, and the production cost is further reduced.
According to some embodiments of the invention, the target grinding wheel data information includes a first height and a first single-side thickness of the target grinding wheel, each grinding wheel in the grinding wheel bin corresponds to the in-store grinding wheel data information, and each in-store grinding wheel data information includes a second height and a second single-side thickness;
the similarity result is obtained by the following steps:
calculating a height difference of subtracting the first height from the second height corresponding to each in-store grinding wheel data information in the grinding wheel bin, and calculating a single-side thickness difference of subtracting the first single-side thickness from the second single-side thickness corresponding to each in-store grinding wheel data information in the grinding wheel bin;
obtaining the similarity according to the height difference and the single-side thickness difference corresponding to each in-store grinding wheel data information;
and obtaining the similarity result according to a plurality of the similarities.
According to some embodiments of the invention, the obtaining the similarity result according to a plurality of similarities includes the following steps:
screening out the similarity with the height difference being negative or the single-side thickness difference being negative to obtain a plurality of first similarities with the height difference and the single-side thickness difference not being negative;
and obtaining the similarity result according to the first similarity.
According to some embodiments of the invention, the obtaining the similarity result according to the first similarity includes the steps of:
selecting the first similarity with the smallest height difference to obtain a second similarity;
and if only one second similarity exists, obtaining the similarity result.
According to some embodiments of the invention, the obtaining the similarity result according to the first similarity includes the steps of:
selecting the first similarity with the smallest height difference to obtain a second similarity;
if the number of the second similarity is multiple, selecting the second similarity with the smallest single-side thickness difference to obtain a third similarity;
and if only one third similarity exists, obtaining the similarity result.
According to some embodiments of the invention, the obtaining the similarity result according to the first similarity includes the following steps:
selecting the first similarity with the smallest height difference to obtain a second similarity;
if the number of the second similarity is multiple, selecting the second similarity with the smallest single-side thickness difference to obtain a third similarity;
and if a plurality of third similarities are provided, randomly selecting one third similarity as a similarity result.
According to some embodiments of the invention, a clamp is mounted on the workpiece spindle, the clamp being used to clamp the gear workpiece;
the clamps are provided with third workpiece identification codes, and the third workpiece identification codes corresponding to the clamps of each model are different; the plurality of third workpiece identification codes and the plurality of first workpiece identification codes are in one-to-one correspondence;
the first workpiece identification code acquired by the identification device is matched with the third workpiece identification code acquired in advance;
and if the matching results are inconsistent, stopping the action of the gear grinding equipment and giving an alarm.
According to a second aspect of the present invention, a gear grinding apparatus has a grinding wheel matching system employing the above-described target grinding wheel matching method.
According to some embodiments of the invention, the tooth grinding apparatus further comprises a machining assembly mounted above the workpiece spindle and movable relative thereto; the identification device is telescopically mounted to the processing assembly.
According to some embodiments of the invention, the machining assembly is equipped with a measuring device for positioning and measuring a gear workpiece placed on the workpiece spindle.
According to the gear grinding device provided by the embodiment of the invention, the grinding wheel matching system adopting the target grinding wheel matching method is provided, namely, at least the gear grinding device has all the beneficial effects brought by the technical scheme of the embodiment.
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 invention is further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic view of a gear grinding apparatus according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a grinding wheel according to one embodiment of the invention;
FIG. 3 is a schematic view of the height difference and single-sided thickness difference of a grinding wheel according to an embodiment of the invention;
fig. 4 is a flow chart of an embodiment of the present invention.
Reference numerals:
a host machine 100, a workpiece spindle 110, a grinding wheel dresser 120, an identification device 130, a processing assembly 140 and a measuring device 150;
grinding wheel bin 200, grinding wheel grasping mechanism 210;
a workpiece bin 300, a workpiece gripping mechanism 310.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, plural means two or more. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1 to 4, the gear grinding apparatus of the embodiment of the present invention includes a main machine 100, a workpiece spindle 110, an identification device 130, a grinding wheel cartridge 200, a grinding wheel grasping mechanism 210, and a grinding wheel dresser 120; the workpiece spindle 110 is used for placing gear workpieces, the grinding wheel dresser 120 is used for carrying out appearance dressing on grinding wheels, the grinding wheel bin 200 is used for placing grinding wheels of various types, and the grinding wheel grabbing mechanism 210 is used for grabbing the grinding wheels in the grinding wheel bin 200. The workpiece spindle 110 and the grinding wheel grabbing mechanism 210 are both mounted on the host machine 100, and the workpiece spindle 110 and the grinding wheel grabbing mechanism 210 are arranged at intervals along the horizontal direction.
Referring to fig. 1, the gear grinding apparatus further includes a workpiece bin 300 and a workpiece grabbing mechanism 310, the workpiece bin 300 is used for placing a plurality of different gear workpieces, the workpiece grabbing mechanism 310 is used for grabbing the gear workpieces to transfer between the workpiece bin 300 and the workpiece spindle 110, and the workpiece grabbing mechanism 310 can grab the gear workpieces to be processed in the workpiece bin 300 and place the gear workpieces on the workpiece spindle 110, or transfer the gear workpieces already processed on the workpiece spindle 110 to the workpiece bin 300.
The gear grinding apparatus further includes a machining assembly 140, wherein the machining assembly 140 is mounted on the main machine 100, disposed above the workpiece spindle 110, and movable relative to the workpiece spindle 110. Referring to fig. 1, the machining assembly 140 has at least three degrees of freedom in X, Y, Z, the grinding wheel grabbing mechanism 210 is used for grabbing the grinding wheel in the grinding wheel bin 200 and sending the grinding wheel to the host 100, the machining assembly 140 automatically installs the grinding wheel on the grinding wheel grabbing mechanism 210 on the machining assembly 140, then the machining assembly 140 sends the grinding wheel to the position of the grinding wheel dresser 120 for dressing, and after finishing dressing, the machining assembly 140 moves above the workpiece spindle 110 for machining the gear workpiece.
In some embodiments of the present invention, the gear workpieces are provided with first workpiece identification codes, and the first workpiece identification codes corresponding to each gear workpiece are different; the identification device 130 is used for identifying a first workpiece identification code of the gear workpiece. The grinding wheel bin 200 is internally provided with a plurality of types of grinding wheels, each type of grinding wheel in the grinding wheel bin is provided with a second workpiece identification code, and the second workpiece identification codes corresponding to each type of grinding wheel are different; the first workpiece identification codes and the second workpiece identification codes are in one-to-one correspondence, namely, a gear workpiece is provided with one first workpiece identification code, one first workpiece identification code is only corresponding to one second workpiece identification code, and one second workpiece identification code is also only corresponding to one grinding wheel.
The target grinding wheel matching method provided by the embodiment of the invention comprises the following steps of:
acquiring a first workpiece identification code of the gear workpiece at the position of the workpiece spindle 110 through the identification device 130; the recognition device 130 may be a photographing device, and specifically may be an infrared photographing recognition device; the first workpiece identification code may be a two-dimensional code, a bar code, a special mark, or the like. Because the mode of identifying the two-dimensional code, the bar code or the special mark and other identification codes by photographing belongs to the conventional technical scheme, the technical principle of photographing identification is not repeated in the application.
Matching the acquired first workpiece identification code with a second workpiece identification code acquired in advance, and if the matching results are inconsistent, namely if the acquired first workpiece identification code is not matched with all the second workpiece identification codes, executing a grinding wheel matching processing strategy to acquire a target grinding wheel; specifically, the gear grinding equipment at least further comprises a workpiece database, a grinding wheel database and a controller, wherein the first workpiece identification code of each gear workpiece corresponds to corresponding in-store workpiece data information in the workpiece database, and a plurality of first workpiece identification codes correspond to a plurality of in-store workpiece data information one by one; the second workpiece identification codes of each grinding wheel are corresponding to corresponding in-stock grinding wheel data information in a grinding wheel database, and the multiple second workpiece identification codes are in one-to-one correspondence with the multiple in-stock grinding wheel data information; the data information of various in-store workpieces and the data information of various in-store grinding wheels are in one-to-one correspondence. After the identification device 130 obtains the first workpiece identification code of the gear workpiece at the workpiece spindle 110, the controller matches the corresponding in-stock workpiece data information, then the in-stock workpiece data information is matched with the in-stock grinding wheel data information, and if the in-stock workpiece data information is not matched with the corresponding in-stock grinding wheel data information, the grinding wheel matching processing strategy is executed.
Grinding wheel matching processing strategies comprising:
generating target grinding wheel data information matched with the gear workpiece at the position of the workpiece spindle 110;
determining similarity between target grinding wheel data information and in-stock grinding wheel data information of each model of grinding wheel in a grinding wheel bin obtained in advance, and obtaining a similarity result; the data information of the grinding wheels in the warehouse is obtained according to the grinding wheels of various types in the grinding wheel warehouse, and the data information of the grinding wheels in the warehouse corresponding to each type of grinding wheel is different; the multiple second workpiece identification codes are in one-to-one correspondence with the multiple in-store grinding wheel data information;
selecting a pre-processing grinding wheel from the grinding wheels with various models in the grinding wheel bin according to the similarity result;
the grinding wheel grabbing mechanism is controlled to grab the pre-processed grinding wheel and send the pre-processed grinding wheel to the grinding wheel dresser, and the grinding wheel dresser processes the pre-processed grinding wheel according to the data information of the target grinding wheel to obtain the target grinding wheel.
It should be appreciated that for new gear workpieces, generally, we first dimension them and then process them; that is, the in-store workpiece data information of the new gear workpiece is known in advance, and the new gear workpiece is required to be processed; then the new in-library workpiece data information can be uploaded into the workpiece database manually and matched with the corresponding first workpiece identification code, if the first workpiece identification code is a two-dimensional code or a bar code, the first workpiece identification code can be printed out and attached to a gear workpiece to be processed, then the gear workpiece to be processed is placed on a workpiece spindle, then a target grinding wheel is matched through a target grinding wheel matching method to process the gear workpiece on the workpiece spindle, and finally the required gear workpiece is obtained.
Further, the in-store workpiece data information of the new gear is known, and the in-store workpiece data information generally includes a plurality of data, such as tooth depth, tooth thickness, and the like; the controller can calculate the data information of the target grinding wheel through the data information of the workpiece in the stock through a set algorithm, and after the target grinding wheel is obtained through the grinding wheel matching processing strategy, if a large number of new gear workpieces are required to be produced, the data information of the target grinding wheel can be stored in the grinding wheel database to be stored as the data information of the workpiece in the stock, and a corresponding second workpiece identification code is printed for the target grinding wheel.
It is conceivable that when the obtained first workpiece identification code is matched with the pre-obtained second workpiece identification code, if the matching result is consistent, that is, there is in the grinding wheel database the in-stock grinding wheel data information matched with the first workpiece identification code, the corresponding second workpiece identification code is matched according to the matched in-stock grinding wheel data information, and then the grinding wheel is selected according to the matched second workpiece identification code, so that the target grinding wheel can be directly obtained.
In some embodiments of the present invention, the target wheel data information includes a first height and a first single-side thickness of the target wheel, each wheel in the wheel well corresponds to the in-stock wheel data information, each in-stock wheel data information includes a second height and a second single-side thickness;
the similarity result is obtained by the following steps:
calculating a height difference of subtracting the first height from the second height corresponding to each in-stock grinding wheel data information in the grinding wheel bin, and calculating a single-side thickness difference of subtracting the first single-side thickness from the second single-side thickness corresponding to each in-stock grinding wheel data information in the grinding wheel bin;
obtaining similarity according to the height difference and the single-side thickness difference corresponding to the data information of each in-store grinding wheel;
and obtaining a similarity result according to the multiple similarities.
Specifically, referring to fig. 2 and 3, the height is H in fig. 2, and the single-side thickness is B in fig. 2; the height difference is Δh in fig. 3, and the single-sided thickness difference is Δb in fig. 3. It should be understood that the calculated height difference and the single-side thickness difference are both arrays, that is, the height difference has a plurality of different numbers, and the single-side thickness difference also includes a plurality of numbers.
In some embodiments of the present invention, a similarity result is obtained according to a plurality of similarities, including the steps of:
screening out the similarity with the height difference being negative or the single-side thickness difference being negative to obtain a plurality of first similarities with the height difference and the single-side thickness difference being not negative;
and obtaining a similarity result according to the first similarity.
Specifically, the difference in height and the difference in thickness on the single side are not negative because the diamond roller is used on the grinding wheel dresser 120 to process the pre-processed grinding wheel, and the diamond roller rotates to realize dressing of the grinding wheel only by reducing the size of the pre-processed grinding wheel but not increasing the size of the pre-processed grinding wheel, so that the first similarity must not be negative, and therefore, the height and the thickness on the single side of the pre-processed grinding wheel to be obtained are not smaller than the first height and the thickness on the single side.
Further, the first similarity may include a value of zero.
In some embodiments of the present invention, obtaining a similarity result from the first similarity includes the steps of:
selecting a first similarity with the smallest height difference to obtain a second similarity;
if the second similarity is only one, obtaining a similarity result;
if the number of the second similarity is multiple, selecting the second similarity with the smallest single-side thickness difference, and obtaining a third similarity;
if the third similarity is only one, obtaining a similarity result;
if there are a plurality of third similarities, randomly selecting a third similarity as a similarity result.
Specifically, the similarity result is obtained from the first similarity by obtaining the second similarity through the height difference, namely, firstly selecting the grinding wheel with the height closest to the height of the target grinding wheel from the grinding wheel bin, and then selecting the grinding wheel with the single-side thickness closest to the target grinding wheel from the part of the grinding wheels if the heights of the part of the grinding wheels in the grinding wheel bin are consistent with the heights of the target grinding wheel. The reason why the height is selected first and then the single-sided thickness is selected is that the trimming amount on the height is large, so that the second similarity is preferentially obtained by the height difference.
Referring to fig. 3, Δh is the height of the grinding wheel to be machined to the target grinding wheel to be dressed, and is typically dressed from the bottom of the grinding wheel to be machined; Δb is the thickness of the wheel to be machined to the outer peripheral side of the target wheel to be dressed, and it can be seen that the single-sided thickness difference between the wheel to be machined and the target wheel is uneven, and Δb is the maximum value within the single-sided thickness difference. The trimming mode of delta B is to enlarge the outline of the periphery of the target grinding wheel to the outside equidistantly, and then trim the outline gradually to obtain the target grinding wheel. For example, the maximum value of the single-side thickness difference between the grinding wheel to be processed and the target grinding wheel is 1 mm, the 1 mm is divided into ten equal parts, and the dressing amount of each grinding wheel dresser is adjusted to 100 micrometers, so that the target grinding wheel can be obtained through 10 dressing times. In the dressing process of 10 times, the amount of dressing was different each time, but the target grinding wheel was certainly obtained by 10 times of dressing.
Δh and Δb in this embodiment are each in millimeters, and Δh and Δb are each integers.
In some embodiments of the present invention, since only one gear grinding apparatus can process a gear workpiece at a time, only one grinding wheel is required to process the gear workpiece at a time, and as such, the processing assembly 140 can only hold one grinding wheel.
It will be appreciated that a single grinding wheel is typically capable of performing processing on multiple gear workpieces, and that the tooth grinding apparatus matches a new target grinding wheel by re-cycling the target grinding wheel matching method as the grinding wheel wears. It is conceivable that if a new gear workpiece is only required to be processed in small batches, a grinding wheel matching scheme may be adopted to match a new target grinding wheel, and if a new gear workpiece is required to be processed in large batches, a corresponding target grinding wheel may be produced in a corresponding batch for the gear workpiece to improve the processing efficiency. If new gear workpieces are machined in a large batch, the lathe is generally used for machining the target grinding wheels in a batch mode, and the target grinding wheel matching method is not required to be adopted.
In some embodiments of the present invention, the workpiece spindle 110 is provided with a fixture, the fixture is used for clamping the gear workpiece, the fixtures are all provided with third workpiece identification codes, and the third workpiece identification codes corresponding to the fixtures of each model are different; the plurality of third workpiece identification codes are in one-to-one correspondence with the plurality of first workpiece identification codes; the identifying device 130 can also be used for identifying a third workpiece identification code, and the first workpiece identification code acquired by the identifying device 130 is matched with the third workpiece identification code acquired in advance; if the matching results are consistent, executing a subsequent grinding wheel matching processing strategy to obtain a target grinding wheel; if the matching results are inconsistent, stopping the action of the gear grinding equipment and giving an alarm, and waiting for manual elimination of the alarm can be continued. Generally, a gear corresponds to a fixture, and a gear also corresponds to a grinding wheel, so that the first workpiece identification code, the second workpiece identification code, and the third workpiece identification code belong to a one-to-one correspondence. For a new gear workpiece, a new clamp is designed for the new gear workpiece before the first machining, and a third workpiece identification code of the new clamp corresponding to the new gear workpiece is manually input into a clamp database, and a target grinding wheel of the new gear workpiece can be obtained through a target grinding wheel matching method.
In some embodiments of the present invention, the identification device 130 is telescopically mounted on the processing assembly 140, and when the gear workpiece is placed on the workpiece spindle 110, the identification device 130 is extended in the Z-axis direction, then the first workpiece identification code and the third workpiece identification code are identified, and after the identification is completed, the identification device 130 is retracted into the processing assembly 140. Specifically, referring to fig. 1, the processing assembly 140 is provided with a protective cover extending along the Z-axis direction, and the protective cover is used for protecting the identification device 130; when the identification device 130 does not need to be identified, the identification device 130 is retracted into the shield.
In some embodiments of the present invention, the processing assembly 140 further includes a measuring device 150, where the measuring device 150 is mounted on the processing assembly 140, and the measuring device 150 is configured to measure a gear workpiece placed on the workpiece spindle 110, so as to determine a mounting position, a tooth slot depth, etc. of the gear workpiece, and further calculate and allocate a machining allowance in subsequent processing through a set algorithm. The machining assembly 140 moves on the X, Y, Z axis with the measuring device 150 moving synchronously, and the measuring device 150 is also telescopically mounted to the machining assembly 140, with the measuring device 150 being extendable and retractable in the Z axis. Referring to fig. 1, after a gear is placed on a workpiece spindle 110, a recognition device 130 recognizes the gear, a measuring device 150 extends downward along the Z axis direction, a machining assembly 140 is moved to a proper position, a measuring head of the measuring device 150 is positioned in the middle of a tooth slot of the workpiece gear, the workpiece spindle 110 is rotated forward and backward with an axis a as an axis, left and right tooth surfaces of the tooth slot of the workpiece gear respectively touch the measuring head of the measuring device 150, and then the measuring device 150 retracts along the Z axis direction.
According to the target grinding wheel matching method provided by the embodiment of the invention, the preprocessing grinding wheel with parameters closer to those of the image information of the workpiece to be matched can be obtained by executing the matching processing strategy, compared with manual selection, the sand repairing amount is effectively reduced, so that the sand repairing time is shortened, and the processing efficiency is improved; by executing the matching processing strategy, the automatic selection of the pre-processing grinding wheel and the automatic trimming of the target grinding wheel are realized, so that the automatic processing of the new gear workpiece is realized, and the production cost is further reduced.
Referring to fig. 2, the working flow of the tooth grinding apparatus of the present embodiment is as follows:
1. the fixture and the gear workpiece are installed on the workpiece spindle 110, the identification device 130 photographs and identifies the first workpiece identification code and the third workpiece identification code, and if the first workpiece identification code and the third workpiece identification code are not matched, the gear grinding equipment gives an alarm and stops acting; if the first workpiece identification code is matched with the third workpiece identification code, calling a corresponding machining program;
2. the identification device 130 is retracted, the processing assembly 140 is operated, and the gear workpiece is measured by the measuring device 150; if the measured parameters are not matched with the data base, interrupting the program and improving the mismatching of the object and the code; if the measured parameters are matched with the database, automatically replacing the grinding wheel;
3. resetting the measuring device 150; matching the acquired first workpiece identification code with a second workpiece identification code acquired in advance, and if the matching results are consistent, obtaining a target grinding wheel; if the matching results are inconsistent, executing a grinding wheel matching processing strategy to obtain a pre-processing grinding wheel;
4. trimming the pre-processed grinding wheel to obtain a target grinding wheel;
5. and grinding the gear workpiece by using the target grinding wheel.
In addition, the embodiment of the invention also provides gear grinding equipment, which is provided with a grinding wheel matching system, wherein the grinding wheel matching system adopts the target grinding wheel matching method. The tooth grinding device of the embodiment has the grinding wheel matching system adopting the target grinding wheel matching scheme, so that the tooth grinding device has at least all the beneficial effects brought by the technical scheme of the embodiment.
Furthermore, an embodiment of the present invention also provides a computer-readable storage device storing computer-executable instructions for causing a computer to perform the above-described grinding wheel matching method. The storage device of the present embodiment adopts the above-described grinding wheel matching method, so that the storage device has at least all the beneficial effects brought by the technical solutions of the above embodiments.
Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage devices or non-transitory media and communication media or transitory media. The term computer storage device includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as known to those skilled in the art. Computer storage devices include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk DVD or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by the computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.
Claims (9)
1. The target grinding wheel matching method of the gear grinding equipment is characterized in that the gear grinding equipment comprises a workpiece main shaft, an identification device, a grinding wheel bin, a grinding wheel grabbing mechanism and a grinding wheel trimmer; the workpiece spindle is used for placing gear workpieces, first workpiece identification codes are arranged on the gear workpieces, and the first workpiece identification codes corresponding to each gear workpiece are different; the identification device is used for identifying a first workpiece identification code of the gear workpiece; the grinding wheel grabbing mechanism is used for grabbing grinding wheels in the grinding wheel bin; the grinding wheel bin is internally provided with grinding wheels of various types, each type of grinding wheel in the grinding wheel bin is provided with a second workpiece identification code, and the second workpiece identification codes corresponding to each type of grinding wheel are different; the plurality of first workpiece identification codes and the plurality of second workpiece identification codes are in one-to-one correspondence; the grinding wheel dresser is used for carrying out appearance dressing on the grinding wheel;
the target grinding wheel matching method comprises the following steps:
acquiring the first workpiece identification code of the gear workpiece at the workpiece spindle position through the identification device;
matching the acquired first workpiece identification code with the second workpiece identification code acquired in advance, and selecting a grinding wheel according to the matched second workpiece identification code if the matching result is consistent, so as to acquire the target grinding wheel; if the acquired first workpiece identification codes are not matched with all the second workpiece identification codes, executing a grinding wheel matching processing strategy to obtain a target grinding wheel;
the grinding wheel matching processing strategy comprises the following steps:
generating target grinding wheel data information matched with the gear workpiece on the workpiece spindle position;
determining similarity between the target grinding wheel data information and the pre-acquired in-stock grinding wheel data information of each model of grinding wheel in the grinding wheel bin, and obtaining a similarity result; the in-store grinding wheel data information is obtained according to grinding wheels of various types in the grinding wheel bin, and the in-store grinding wheel data information corresponding to each type of grinding wheel is different; the second workpiece identification codes are in one-to-one correspondence with the in-store grinding wheel data information;
selecting a pre-processing grinding wheel from the grinding wheels with various models in the grinding wheel bin according to the similarity result;
controlling the grinding wheel grabbing mechanism to grab the pre-machined grinding wheel and send the pre-machined grinding wheel to the grinding wheel dresser, and processing the pre-machined grinding wheel by the grinding wheel dresser according to the target grinding wheel data information to obtain a target grinding wheel;
the data information of the target grinding wheel comprises a first height and a first single-side thickness of the target grinding wheel, each grinding wheel in the grinding wheel bin corresponds to the data information of the in-store grinding wheel, and each data information of the in-store grinding wheel comprises a second height and a second single-side thickness;
the similarity result is obtained by the following steps:
calculating a height difference of subtracting the first height from the second height corresponding to each in-store grinding wheel data information in the grinding wheel bin, and calculating a single-side thickness difference of subtracting the first single-side thickness from the second single-side thickness corresponding to each in-store grinding wheel data information in the grinding wheel bin;
obtaining the similarity according to the height difference and the single-side thickness difference corresponding to each in-store grinding wheel data information;
and obtaining the similarity result according to a plurality of the similarities.
2. The target grinding wheel matching method of a tooth grinding apparatus according to claim 1, characterized in that: the similarity result is obtained according to a plurality of similarities, and the method comprises the following steps:
screening out the similarity with the height difference being negative or the single-side thickness difference being negative to obtain a plurality of first similarities with the height difference and the single-side thickness difference not being negative;
and obtaining the similarity result according to the first similarity.
3. The target grinding wheel matching method of a tooth grinding apparatus according to claim 2, characterized in that: the step of obtaining the similarity result according to the first similarity comprises the following steps:
selecting the first similarity with the smallest height difference to obtain a second similarity;
and if only one second similarity exists, obtaining the similarity result.
4. The target grinding wheel matching method of a tooth grinding apparatus according to claim 2, characterized in that: the step of obtaining the similarity result according to the first similarity comprises the following steps:
selecting the first similarity with the smallest height difference to obtain a second similarity;
if the number of the second similarity is multiple, selecting the second similarity with the smallest single-side thickness difference to obtain a third similarity;
and if only one third similarity exists, obtaining the similarity result.
5. The target grinding wheel matching method of a tooth grinding apparatus according to claim 2, characterized in that: the step of obtaining the similarity result according to the first similarity comprises the following steps:
selecting the first similarity with the smallest height difference to obtain a second similarity;
if the number of the second similarity is multiple, selecting the second similarity with the smallest single-side thickness difference to obtain a third similarity;
and if a plurality of third similarities are provided, randomly selecting one third similarity as a similarity result.
6. The target grinding wheel matching method of a tooth grinding apparatus according to claim 1, characterized in that: a clamp is arranged on the workpiece spindle and used for clamping the gear workpiece;
the clamps are provided with third workpiece identification codes, and the third workpiece identification codes corresponding to the clamps of each model are different; the plurality of third workpiece identification codes and the plurality of first workpiece identification codes are in one-to-one correspondence;
the first workpiece identification code acquired by the identification device is matched with the third workpiece identification code acquired in advance;
and if the matching results are inconsistent, stopping the action of the gear grinding equipment and giving an alarm.
7. A tooth grinding apparatus, characterized in that it has a grinding wheel matching system employing the target grinding wheel matching method according to any one of claims 1 to 6.
8. The tooth grinding apparatus as claimed in claim 7, characterized in that: the gear grinding equipment further comprises a processing assembly, wherein the processing assembly is arranged above the workpiece main shaft and can move relative to the workpiece main shaft; the identification device is telescopically mounted to the processing assembly.
9. The tooth grinding apparatus as claimed in claim 8, wherein: the machining assembly is provided with a measuring device which is used for positioning and measuring the gear workpiece placed on the workpiece spindle.
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