CN115689452B - Drill stock planning management method - Google Patents
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- CN115689452B CN115689452B CN202211441979.7A CN202211441979A CN115689452B CN 115689452 B CN115689452 B CN 115689452B CN 202211441979 A CN202211441979 A CN 202211441979A CN 115689452 B CN115689452 B CN 115689452B
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Abstract
The invention belongs to the technical field of material management, and discloses a drill stock plan management method, which comprises the following steps: s100, setting a central control system controlled by a computer, an automatic warehouse, a needle matching machine with a preset number, a needle returning machine and a grinding machine; s200, the central control system continuously actively manages the demands and the service lives of the stock drill bits; s300, continuously monitoring the load states of the needle matching machine, the needle returning machine and the grinding machine by the central control system; s400, the external system sends out warehouse information to the central control system, and the automatic warehouse takes out drill bits of various types required by each drilling machine according to the required quantity and boxes; s500, when the materials are externally supplied to the automatic warehouse or the materials of an external drilling machine, the drill bit is directly fed from the inlet of the needle return area. According to the invention, the storage quantity of the drill bits in the automatic warehouse is controlled and the service life of the drill bits is managed, so that useless stock of the drill bits is reduced, and the storage efficiency and turnover rate of the drill bits are improved.
Description
Technical Field
The invention relates to the technical field of material management, in particular to a drill stock plan management method.
Background
The PCB board needs the drill bit of different specification models to use in drilling process to process the hole of different directness and quality requirement, because the direct hole machining frequency of difference in difference exists, the required quantity difference of the drill bit of different specification models is great. The existing method for solving the problem is to count by manpower, the reserve and taking processes of the drill bit are highly dependent on experience of warehouse management personnel, time and labor are wasted, and a large error rate exists. Meanwhile, the old drill bit used by the drilling machine can be repeatedly used for a plurality of times after being ground, and the service life of the drill bit is difficult to manage by a manual statistics method, so that most of the drill bits with grinding times in the industry are used according to lower service lives, and the service life of the drill bit is wasted. In addition, conventional automated warehouse management is insufficient in emergency handling capability, and a large safety stock of drill bits is required to meet the requirement on continuous change of the demand of the drill bits, so that the turnover rate of the drill bits is low. In addition, the drill bit is required to be packaged in a placement mode required by drilling machine processing after being delivered out of the warehouse, and when a material box recovered from the drilling machine is put in warehouse, the drill bits of different types in the box are required to be sorted and packaged by a special needle matching machine, a needle returning machine or manually finished, so that the frequent material flow is changed into manual statistics and the service life/inventory information of the drill bit is greatly inconvenient. Accordingly, there is a need for a method of managing a drill inventory plan that reduces manual intervention and material transfer during warehouse entry and machine-to-machine material transfer, thereby solving the above-described problems.
Disclosure of Invention
One object of the present invention is to: the method for managing the inventory plans of the drill bits is provided, and the storage quantity of the drill bits in an automatic warehouse is controlled to reduce useless inventory of the drill bits and improve the warehouse efficiency and the turnover rate of the drill bits.
To achieve the purpose, the invention adopts the following technical scheme:
a drill bit inventory plan management method, comprising the steps of:
s100, setting a central control system controlled by a computer, an automatic warehouse, a needle matching machine with a preset number, a needle returning machine and a grinding machine;
s200, the central control system continuously actively manages the demands and the service lives of the stock drill, wherein the service lives of the stock drill are calculated according to the grinding times, for a specific type drill, the central control system checks the stock quantity of the type drill after each time of in-out operation, and when the stock quantity is less than the safe stock quantity, the central control system actively reports the stock state to an external system or a manager; when the drill bit is identified to be put in storage from the needle returning area, identifying the grinding times through the storage history record, comparing the grinding times with the preset upper limit of the grinding times, and intensively scrapping the drill bit reaching the upper limit of the grinding times;
s300, continuously monitoring load states of the needle matching machine, the needle returning machine and the grinding machine by the central control system, and when a cache warehouse of the needle matching machine is not full, sending warehouse-out information to the automatic warehouse according to the required materials by the central control system, wherein the automatic warehouse is used for carrying out warehouse-out of corresponding materials from a whole box of a needle matching area to the cache warehouse of the needle matching machine; when the cache warehouse of the needle returning machine is not full, the central control system checks the needle returning area warehouse of the automatic warehouse and sends out warehouse information, and the automatic warehouse sequentially sends out the material boxes which are not subjected to the needle returning operation to the cache warehouse of the needle returning machine; when the grinder is idle, the central control system checks the grinding state of the material in the needle return area of the automatic warehouse, and sends out warehouse information, and the automatic warehouse integrates unground drill bits to the grinder;
s400, an external system sends out warehouse information to the central control system, the automatic warehouse takes out the drill bits of various types required by each drilling machine according to the required number according to boxes, when the required number of the drill bits of a specific type cannot be divided by the number of the drill bits of a single box, if the needle matching machine is arranged in the system, the remainder part of the required number of the drill bits of the type is taken out by the needle matching machine, and if the needle matching machine is not arranged in the system, one box of the drill bits of the type is taken out for external manual or machine distribution;
s500, when materials are externally supplied to the automatic warehouse or materials of an external drilling machine, all drill bits are directly fed from an inlet of a needle return area, the automatic warehouse carries out warehouse entry treatment on the materials after identifying material information, if the materials are new drill bits of a whole box or the ground drill bits, the whole box is fed to a vacancy closest to an outlet of the needle distribution area for storage, and if the materials are old drill bits which are not ground and recovered by the drilling machine or non-whole box drill bits which are not used up are fed to the needle return area for storage;
and S600, if the automatic warehouse does not have discharging and feeding operations, comparing the using amounts Mx of the drill bits of various specifications and models in the needle distribution area in the automatic warehouse one by one in the latest statistical period D through the central control system, sorting the drill bit models according to the using amounts, and arranging the drill bits from near to far according to the material warehouse-in distance of the automatic warehouse according to the sorting result by the manipulator in the warehouse.
As an optional technical solution, in the step S100, the automated warehouse is functionally divided into a needle allocation area and a needle return area, for sorting and storing the box-packed drill bits; the needle matching machine is used for arranging a plurality of drill bits with different types into the same material box, and the needle returning machine is used for taking out the drill bits with different types from the material box and arranging the drill bits with different types into different material boxes according to the types; the grinder is used for grinding the drill bit used by the drilling machine so as to restore the processing capacity of the drill bit; the central control system stores model specification and stock quantity information of all drill bits, is connected with an external MES, an ERP system, a drilling machine and the grinding machine, and the stock information is requested to be read by the external system to the central control system, or the central control system actively sends out-in-storage and state information of the drill bits to the external system.
As an optional technical solution, in the step S100, the automated warehouse uses a manipulator or an AGV device to perform the in-warehouse and out-warehouse sorting operation of the materials, uses a two-dimensional code or an RFID identification device to identify the warehouse-in materials by a magazine, and obtains the type of the drill bit, the grinding times and the information about whether grinding is required in the magazine.
As an optional technical solution, in the step S200, when an external system or a manager does not define the target stock quantity, the drill bit is first divided into a demand stable class or a demand fluctuation class according to the historical usage condition, and different stock quantity calculation methods are set for different types to determine the target stock quantity; when an external system or a manager inputs the target stock quantity of the specific type of drill bit to the central control system, the target stock quantity value input by the outside is preferentially adopted.
As an alternative technical solution, the method for dividing the type of the specific model drill bit is specifically to firstly calculate the average number Mn and standard deviation Sn of the specific model drill bit used each day in the statistical period D according to the historical usage data of each specific model drill bit, and define the coefficient N, when the drill bit of the specification type meets Sn < N multiplied by Mn, the drill bit of the specification type is of a requirement stable type, and when the drill bit of the specification type meets Sn & gtN multiplied by Mn, the drill bit of the specification type is of a requirement fluctuation type, and safety stock quantity of different drill bits is set according to the drill bit types of the specification type.
As an optional solution, in the step S200, the method further includes the step of: s201, defining a coefficient N1, wherein the storage amount Nx1 of the drill bit of the specification type in the automatic warehouse is larger than or equal to N1×Mn.
As an optional solution, in the step S200, the method further includes the step of: s202, defining coefficients N2, N3 and N4, wherein N2 is more than N3, and setting the single daily usage of the drill bit with the specification model as Md;
if Md > Mn+N2×Sn, the day is defined as a high-dose day;
if Mn+N2×Sn > Md > Mn+N3×Sn, the day is defined as the medium-use day;
if Mn+N3×Sn > Md, the day is defined as the low dose day.
As an optional solution, after the step S202, the method further includes the steps of: s203, obtaining the number H of high-dosage days, the number M of medium-dosage days and the number Q of low-dosage days in the statistical period D, and calculating the high-dosage day proportion h%, the medium-dosage day proportion m% and the low-dosage day proportion q%.
As an optional solution, after the step S203, the method further includes the steps of: s204, setting a dosage criterion X%;
if h% is more than X%, defining the drill bit as a high-dosage type;
if X% is more than h%, defining the drill bit as a medium-use type;
if X% is more than h% and q% is more than m% and q% is more than h%, defining the drill bit as a low-consumption type;
if the drill bits of the same specification type simultaneously meet the definition of any two or three groups of the usage amount, the drill bit is preferentially defined to be of a type with higher usage amount.
As an optional solution, after the step S204, the method further includes the following steps:
setting a safety coefficient Sx for each type of drill bit, wherein Sx can be manually set according to actual demands or classified by the central control system according to historical usage Mn and standard deviation Sn of the drill bit, and the safety coefficient is calculated from preset high-usage type, medium-usage type and low-usage type drill bit stock safety coefficient intervals;
setting a storage quantity safety coefficient Sh for a specific type of drill bit, wherein the target storage quantity Nx2 of the type of drill bit is more than or equal to Sh multiplied by Mn.
The invention has the beneficial effects that:
the invention provides a drill stock plan management method, which comprises an automatic warehouse, a plurality of matched needle matching machines, a needle returning machine and a central control system controlled by a computer, wherein the automatic warehouse, the matched needle matching machines and the needle returning machine can actively manage the demands and the service lives of stock drill bits, distribute materials according to the load state of matched machines, and can carry out material warehouse-in and warehouse-out operation according to the warehouse-in and warehouse-out information of an external system. According to the invention, the automatic warehouse for storing the drill bits is managed by the method, so that useless inventory of the drill bits is reduced, and the warehouse efficiency and the turnover rate of the drill bits are improved.
Drawings
The invention is described in further detail below with reference to the drawings and examples;
FIG. 1 is a flow chart of a method of drill bit inventory plan management according to an embodiment;
FIG. 2 is a schematic view of an automated warehouse according to an embodiment;
fig. 3 is a schematic structural view of another automated warehouse according to an embodiment.
In the figure:
1. a base; 2. an automated warehouse cabinet; 3. an in-store robot; 4. an outer conveyor belt; 5. an out-of-warehouse manipulator; 6. and (5) grinding the machine.
Detailed Description
In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and the like are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the operation, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for providing a special meaning.
In the description herein, reference to the term "one embodiment," "an example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
As shown in fig. 1, the present embodiment provides a method for managing a drill stock plan for an automated warehouse, the method comprising the steps of:
and S100, setting a central control system controlled by a computer, an automatic warehouse and a preset number of needle matching machines, needle return machines and grinding machines 6.
S200, the central control system continuously actively manages the demands and the service lives of the stock drill, wherein the service lives of the stock drill are calculated according to the grinding times, for a specific type drill, the central control system checks the stock quantity of the type drill after each time of in-out operation, and when the stock quantity is less than the safe stock quantity, the central control system actively reports the stock state to an external system or a manager; when the drill bit is identified from the needle returning area to be put in storage, the grinding times are identified through the storage history record, and compared with the preset upper limit of the grinding times, the drill bit reaching the upper limit of the grinding times is discarded in a concentrated mode.
S300, continuously monitoring load states of the needle matching machine, the needle returning machine and the grinding machine 6 by the central control system, and when a cache warehouse of the needle matching machine is not full, sending warehouse-out information to an automatic warehouse according to materials required by the central control system, and allowing the automatic warehouse to warehouse-out corresponding materials from a whole box of a needle matching area to the cache warehouse of the needle matching machine; when the cache warehouse of the needle returning machine is not full, the central control system checks the needle returning area inventory of the automatic warehouse and sends out warehouse information, and the automatic warehouse sequentially sends out the material boxes which are not subjected to the needle returning operation to the cache warehouse of the needle returning machine; when the grinder 6 is idle, the central control system checks the grinding status of the material in the return needle zone of the automated warehouse and sends out a warehouse information, and the automated warehouse integrates the unground drill bits out of the warehouse to the grinder 6.
S400, the external system sends out warehouse information to the central control system, the automatic warehouse takes out according to the box according to the number of each type of drill bits required by each drilling machine, when the number of the required specific type of drill bits cannot be divided by the number of the single box of drill bits, if a needle matching machine is arranged in the system, the remainder part of the required number of the type of drill bits is taken out by the needle matching machine, and if no needle matching machine is arranged in the system, one box of drill bits with the type is taken out for external manual or machine distribution.
S500, when materials are externally supplied to an automatic warehouse or materials of an external drilling machine, all drill bits are directly fed from an inlet of a needle returning area, the automatic warehouse carries out warehouse entry processing on the materials after identifying material information, if the materials are whole new drill bits or grinded drill bits, the whole box is fed to a vacancy closest to an outlet of the needle matching area for storage, and if the materials are old drill bits which are not grinded and are not used up and are recycled by the drilling machine, the materials are fed to the needle returning area for storage.
S600, if the automatic warehouse does not have discharging and feeding operations, the central control system is used for comparing the usage amount Mx of the drill bits of various specifications in the needle distribution area in the automatic warehouse in the latest statistical period D one by one, the drill bit types are ordered according to the usage amount, and the in-warehouse manipulator 3 is used for arranging the drill bits from near to far according to the material warehousing distance from the automatic warehouse according to the ordering result.
According to the embodiment, through the steps, the storage quantity of the drill bits in the automatic warehouse is controlled, so that useless stock of the drill bits is reduced, and the warehouse efficiency and the turnover rate of the drill bits are improved.
In step S100, the automatic warehouse is functionally divided into a needle allocation area and a needle return area for arranging and storing box-packed drill bits; the needle matching machine is used for arranging a plurality of drill bits with different types into the same material box, and the needle returning machine is used for taking out the drill bits with different types from the material box and arranging the drill bits with different types into different material boxes according to the types; the grinder 6 is used for grinding the drill bit used by the drilling machine so as to restore the processing capacity; the central control system stores model specification and stock quantity information of all drill bits, is connected with an external MES, an ERP system, a drilling machine and a grinding machine 6, and the stock information is requested to be read by the external system to the central control system, or the central control system actively sends out-in-storage and state information of the drill bits to the external system.
In step S100, the automated warehouse uses a manipulator or an AGV device to perform the in-out and in-warehouse sorting operations of the materials, uses a two-dimensional code or an RFID identification device to perform magazine identification on the materials in the warehouse, and obtains the type of the drill bit, the grinding times and the information about whether grinding is required in the material taking magazine.
The automatic warehouse is characterized in that a conveyor belt, a mechanical arm or an AGV trolley is arranged between shelves of the automatic warehouse to conduct internal circulation action of materials, an external outlet uses the conveyor belt or the AGV trolley to connect an outlet of a needle distribution area to a needle distribution machine, a needle returning machine or a grinder 6, and besides the inlet and outlet, the needle distribution area and the needle returning area can be provided with manually operated material inlets and outlets for warehousing and ex-warehouse operation of whole box drill bits.
In step S200, when the external system or the manager has no definition, the drill bit is first divided into a demand stable class or a demand fluctuation class according to the history usage condition, and different calculation methods of the target stock quantity are set for different types to determine the target stock quantity; when an external system or a manager inputs the target stock quantity of the specific type of drill bit to the central control system, the target stock quantity value input from the outside is preferentially adopted.
In step S200, the external system or the manager does not define that neither the external system nor the manager inputs the target stock quantity of the specific model bit to the central control system, in which case, the history of use is first considered.
The method for dividing the types of the specific type drill bit comprises the steps of firstly calculating the average number Mn and standard deviation Sn of the specific type drill bit used every day in a statistical period D according to historical use data of each specific type drill bit, defining a coefficient N, wherein when the specific type drill bit meets Sn < N multiplied by Mn, the specific type drill bit is of a requirement stable type, when the specific type drill bit meets Sn > N multiplied by Mn, the specific type drill bit is of a requirement fluctuation type, and setting safety stock quantity of different drill bits according to the specific type drill bit. As one embodiment, 3 types of drills with different specifications are arranged in the automatic warehouse, namely an A drill, a B drill and a C drill, wherein one statistical period D is 21 days, the average number of the A drill, the B drill and the C drill used each day is 9000, 12000 and 15000 respectively in 21 days, standard deviations are 2000, 1000 and 2000 respectively, a definition coefficient N is 0.1, 2000 is more than 0.1 multiplied by 9000, namely the A drill is a requirement fluctuation class, 1000 is less than 0.1 multiplied by 12000, the B drill is a requirement stability class, 20000 is more than 0.1 multiplied by 15000, and namely the C drill is a requirement fluctuation class.
In step S200, the method further includes the steps of, for the drill bit of the demand stabilization class: s201, defining a coefficient N1, wherein the storage amount Nx1 of the drill bit of the specification type in an automatic warehouse is more than or equal to N1×Mn. As an example, N1 is equal to 10, and the storage amount Nx1 of the B drill bit is equal to or more than 10 multiplied by 12000=120000.
In step S200, the method further includes the steps of: s202, defining coefficients N2, N3 and N4, wherein N2 is more than N3, and setting the single daily usage of the drill bit with the specification model as Md;
if Md > Mn+N2×Sn, the day is defined as a high-dose day;
if Mn+N2×Sn > Md > Mn+N3×Sn, the day is defined as the medium-use day;
if Mn+N3×Sn > Md, the day is defined as the low dose day.
As an example, N2 is equal to 2, N3 is equal to 1, the single daily amount of the A drill is 15000 pieces, because 15000 > 9000+2×2000, the day is determined to be a high daily amount, 9000+2×2000 > 12000 > 9000+1×2000, the day is a medium daily amount, and 9000+1×2000 > 10000 > 9000, the day is a low daily amount. The definition of the bit C can refer to the bit a, and this embodiment will not be described in detail.
Preferably, if md=mn+n2×sn, the day is defined as a high usage day, if md=mn+n3×sn, the day is defined as a medium usage day, if md=mn+n4×sn, the day is defined as a low usage day, and if Md is less than mn+n4×sn, the day is defined as a low usage day.
The step S202 further includes the steps of: s203, obtaining the number H of high-dosage days, the number M of medium-dosage days and the number Q of low-dosage days in a statistical period D, and calculating the high-dosage day proportion h%, the medium-dosage day proportion m% and the low-dosage day proportion q%.
After step S203, the method further comprises the steps of: s204, setting a dosage criterion X%;
if h% is more than X%, defining the drill bit as a high-dosage type;
if X% is more than h%, defining the drill bit as a medium-use type;
if X% is more than h% and q% is more than m% and q% is more than h%, defining the drill bit as a low-consumption type;
if the drill bits of the same specification type simultaneously meet the definition of any two or three groups of the usage amount, the drill bit is preferentially defined to be of a type with higher usage amount.
As one example, the usage criterion X% is set to be equal to 40%, if the high usage day of the bit A is 10 days, the medium usage day is 7 days, and the low usage day is 4 days, the high usage day accounts for 47.6%, the medium usage day accounts for 33.3%, the low usage day accounts for 19.1%, and 47.6% is more than 40%, namely the bit A is of a high usage type; if the high usage amount of the A drill bit is 7 days, the medium usage amount of the A drill bit is 10 days, the low usage amount of the A drill bit is 4 days, the high usage amount of the A drill bit accounts for 33.3%, the medium usage amount of the A drill bit accounts for 47.6%, the low usage amount of the A drill bit accounts for 19.1%, the medium usage amount of the A drill bit accounts for 33.3%, the low usage amount of the A drill bit accounts for 47.6%, the 40% > 19.1% and the 47.6% > 33.3% and the 47.6% > 19.1%, namely the A drill bit is of a low usage amount type.
After step S204, the method further comprises the following steps:
setting a safety coefficient Sx for each type of drill bit, wherein Sx can be manually set according to actual demands or classified by a central control system according to historical usage Mn and standard deviation Sn of the drill bit, and the safety coefficient is calculated from preset high-usage type, medium-usage type and low-usage type drill bit stock safety coefficient intervals;
setting a storage quantity safety coefficient Sh for a specific type of drill bit, wherein the target storage quantity Nx2 of the type of drill bit is more than or equal to Sh multiplied by Mn. For a specific type of drill bit, when the number obtained by subtracting the number of unground drill bits from the total number stored in the storage of the type of drill bit is smaller than the target storage amount of the drill bit, the central control system sends feeding information to the outside, and the drill bit with the difference value is required to be externally fed. As an example, the safety factor Sh is equal to 5, sm is equal to 3, sq is equal to 1 for three different types of drills; then, for the drill bit a, when the daily usage amount is 15000, if the drill bit is of a high usage type in the month, the target storage amount Nx2 = 15000 x 5 = 75000; if the drill bit is of a medium usage type in the month, the target stock amount Nx2 = 15000 x 3 = 45000 counts, and so on.
As shown in fig. 2, in one embodiment, the automated warehouse comprises a base 1, a plurality of automated warehouse cabinets 2 and an inner conveyor belt are fixedly installed on the base 1, a plurality of partition boards are arranged in the automated warehouse cabinets 2, the partition boards divide the automated warehouse cabinets 2 to form a storage station for storing drill bits, an in-warehouse manipulator 3 is arranged between two rows of the automated warehouse cabinets 2, the in-warehouse manipulator 3 can transfer drill bits positioned at the storage station of the needle matching area and drill bits positioned at the storage station of the needle returning area onto the inner conveyor belt respectively, or transfer drill bits on the inner conveyor belt onto the storage station of the needle matching area and the storage station of the needle returning area, an outer conveyor belt 4, a sensor and an out-warehouse manipulator 5 are further arranged on the outer side of the automated warehouse cabinet 2, the outer conveyor belt 4 is used for transferring the drill bits, the sensor is used for identifying the specification of the drill bits, the out-warehouse manipulator 5 can transfer the drill bits on the outer conveyor belt 4 onto the inner conveyor belt, or transfer the drill bits on the inner conveyor belt onto the outer conveyor belt 4, and the outer conveyor belt 4 can transfer the drill bits onto the material conveyor table or other material transporting device.
In another embodiment, as shown in fig. 3, the side surface of the needle return area of the automated warehouse is open and is provided with a grinder 6, and the front access conveyor belt of the needle return area is connected with the needle replacement machine by a conveyor belt and the interior of the automated warehouse, and the front access conveyor belt of the needle preparation area is connected with the needle preparation machine.
Optionally, a conveyor belt, a manipulator or an AGV trolley is arranged between shelves of the automated warehouse to perform internal circulation action of the materials, and the external outlet uses the conveyor belt or the AGV trolley to connect the outlet of the needle distribution area to the needle distribution machine, the needle return machine or the grinding machine.
Optionally, the back needle area is provided with a plurality of inlets and outlets, and the in-store manipulator 3 takes unground drill bits out of the store and transfers the ground and new drill bits to the needle distribution area.
Optionally, the needle matching area is provided with an in-warehouse manipulator 3 and a plurality of outlets, and all drill bits placed in the needle matching area are transferred out of the warehouse from the needle returning area by the in-warehouse manipulator 3.
Optionally, each inlet and outlet of the upstream of the needle return area is connected with a needle return machine, and each inlet and outlet of the downstream of the needle return area is connected with a plurality of grinding machines 6.
Optionally, an outlet of the needle matching area is provided with a needle matching machine, when the used drill bit needs to be delivered from the warehouse in a non-whole box, the in-warehouse manipulator 3 firstly takes all the required drill bit models according to the whole box and places the drill bit models in a cache area of the needle matching machine, and the drill bit models are delivered from the warehouse after being sorted by the needle matching machine.
Optionally, the step is performed after the central control system obtains the feeding information: the specification and model of the drill bit are identified through the sensor, and the drill bit is placed on a vacancy closest to a material outlet of the automatic warehouse through the in-warehouse manipulator 3.
Optionally, if the automated warehouse has no discharging and feeding operations, performing the steps of: the central control system is used for comparing the using amount Mx of the drill bits of various specifications in the needle distribution area in the automatic warehouse in a latest statistical period D one by one, the drill bit types are ordered according to the using amount, and the drill bits are arranged from near to far according to the material warehouse-in distance from the automatic warehouse to which the drill bits belong by the in-warehouse manipulator 3 according to the ordering result.
Furthermore, the foregoing description of the preferred embodiments and the principles of the invention is provided herein. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (8)
1. A method of drill inventory planning management, comprising the steps of:
s100, setting a central control system controlled by a computer, an automatic warehouse, a needle matching machine with a preset number, a needle returning machine and a grinding machine;
s200, the central control system continuously actively manages the demands and the service lives of the stock drill, wherein the service lives of the stock drill are calculated according to the grinding times, for a certain type of drill, the central control system checks the stock quantity of the type of drill after each time of in-out operation, and when the stock quantity is less than the safe stock quantity, the central control system actively reports the stock state to an external system or a manager; when the drill bit is identified to be put in storage from the needle returning area, identifying the grinding times through the storage history record, comparing the grinding times with the preset upper limit of the grinding times, and intensively scrapping the drill bit reaching the upper limit of the grinding times;
s300, continuously monitoring load states of the needle matching machine, the needle returning machine and the grinding machine by the central control system, and when a cache warehouse of the needle matching machine is not full, sending warehouse-out information to the automatic warehouse according to the required materials by the central control system, wherein the automatic warehouse is used for carrying out warehouse-out of corresponding materials from a whole box of a needle matching area to the cache warehouse of the needle matching machine; when the cache warehouse of the needle returning machine is not full, the central control system checks the needle returning area warehouse of the automatic warehouse and sends out warehouse information, and the automatic warehouse sequentially sends out the material boxes which are not subjected to the needle returning operation to the cache warehouse of the needle returning machine; when the grinder is idle, the central control system checks the grinding state of the material in the needle return area of the automatic warehouse, sends out warehouse information, and the automatic warehouse sends out the whole box of the unground drill to the grinder;
s400, an external system sends out warehouse information to the central control system, the automatic warehouse takes out the drill bits of various types required by each drilling machine according to the required number according to the boxes, when the required number of the drill bits of a certain type cannot be divided by the number of the drill bits of a single box, if the needle matching machine is arranged in the system, the remainder part of the required number of the drill bits of the type is taken out by the needle matching machine, and if the needle matching machine is not arranged in the system, one box of the drill bits of the type is taken out for external manual or machine distribution;
s500, when materials are externally supplied to the automatic warehouse or materials of an external drilling machine, all drill bits are directly fed from an inlet of a needle return area, the automatic warehouse carries out warehouse entry treatment on the materials after identifying material information, if the materials are new drill bits of a whole box or the ground drill bits, the whole box is fed to a vacancy closest to an outlet of the needle distribution area for storage, and if the materials are old drill bits which are not ground and recovered by the drilling machine or non-whole box drill bits which are not used up are fed to the needle return area for storage;
s600, if the automatic warehouse does not have discharging and feeding operations, comparing the usage amount Mx of the drill bits with various specifications and models in the needle distribution area in the automatic warehouse one by one in the latest statistical period D through the central control system, sorting the drill bit models according to the usage amount, and arranging the drill bits from near to far according to the material warehouse-in distance of the automatic warehouse by a manipulator in the warehouse according to the sorting result;
in the step S200, when the external system or the manager has no definition, the drill bit is first divided into a demand stable class or a demand fluctuation class according to the history usage condition, and different calculation methods of the safe stock quantity are set for different types to determine the safe stock quantity; when an external system or a manager inputs the safety stock quantity of a drill bit of a certain model to the central control system, the safety stock quantity value input from the outside is preferentially adopted;
the step S200 includes the steps of:
setting a safety coefficient Sx for the drill bit with the requirement fluctuation, wherein the Sx is classified by the central control system according to the average daily use number Mn and the standard deviation Sn of the drill bit, and the value of the Sx is calculated from preset drill bit inventory safety coefficient intervals of high-usage model, medium-usage model and low-usage model;
the safety coefficient Sh of the storage quantity is set for the drill bits with special requirements, and the safety stock quantity Nx2 of the drill bits of the model is more than or equal to Sh multiplied by Mn.
2. The method according to claim 1, wherein in step S100, the automated warehouse is functionally divided into a needle allocation area and a needle return area for sorting and storing box-packed drills; the needle matching machine is used for arranging a plurality of drill bits with different types into the same material box, and the needle returning machine is used for taking out the drill bits with different types from the material box and arranging the drill bits with different types into different material boxes according to the types; the grinder is used for grinding the drill bit used by the drilling machine so as to restore the processing capacity of the drill bit; the central control system stores model specification and stock quantity information of all drill bits, is connected with an external MES, an ERP system, a drilling machine and the grinding machine, and the stock information is requested to be read by the external system to the central control system, or the central control system actively sends out-in-storage and state information of the drill bits to the external system.
3. The method according to claim 2, wherein in the step S100, the automated warehouse uses a manipulator or an AGV device to perform the in-warehouse and out-warehouse sorting operation of the materials, uses a two-dimensional code or an RFID identification device to perform magazine identification on the materials in the warehouse, and obtains the type of the drill in the magazine, the number of times of grinding, and information about whether grinding is required.
4. The method for managing a drill stock plan according to claim 1, wherein the method for dividing the type of the drill stock plan is characterized in that firstly, the average number Mn and standard deviation Sn of the drill heads of the specification type used each day in the statistical period D are calculated according to the historical use data of the drill heads of each specification type, and a coefficient N is defined, when the drill heads of the specification type meet Sn < N x Mn, the drill heads of the specification type are in a demand stable type, when the drill heads of the specification type meet Sn > N x Mn, the drill heads of the specification type are in a demand fluctuation type, and the safe stock amounts of the different drill heads are set according to the drill heads of the specification type.
5. The method of claim 4, further comprising the step of, for a demand stabilization type drill bit, in said step S200: s201, defining a coefficient N1, and ensuring that the safety stock quantity Nx1 of the drill bit of the specification type in the automatic warehouse is not less than N1×Mn.
6. The method of claim 5, further comprising the step of, in said step S200, for a drill bit of a demand fluctuation type: s202, defining coefficients N2, N3 and N4, wherein N2 is more than N3, and setting the single daily usage of the drill bit with the specification model as Md;
if Md > Mn+N2×Sn, the day is defined as a high-dose day;
if Mn+N2×Sn > Md > Mn+N3×Sn, the day is defined as the medium-use day;
if Mn+N3×Sn > Md, the day is defined as the low dose day.
7. The drill bit inventory plan management method according to claim 6, further comprising, after said step S202, the steps of: s203, obtaining the number H of high-dosage days, the number M of medium-dosage days and the number Q of low-dosage days in the statistical period D, and calculating the high-dosage day proportion h%, the medium-dosage day proportion m% and the low-dosage day proportion q%.
8. The drill bit inventory plan management method according to claim 7, further comprising, after said step S203, the steps of: s204, setting a dosage criterion X%;
if h% is more than X%, defining the drill bit as a high-dosage type;
if X% is more than h%, defining the drill bit as a medium-use type;
if X% is more than h% and q% is more than m% and q% is more than h%, defining the drill bit as a low-consumption type;
if the drill bits of the same specification type simultaneously meet the definition of any two or three groups of the usage amount, the drill bit is preferentially defined to be of a type with higher usage amount.
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