Automatic tool changing control method for machine tool spare tool magazine

Abstract

The application discloses a kind of machine tool spare tool magazine automatic tool changing control method;Belong to vertical machine tool technical field, including bed, lower base, upper sliding table, beam, ram, operation module, counterweight balancing device and tool anti-falling device;The spare tool magazine device includes interconnection converter, speed reducer, motor, drive wheel, bearing seat, index slot wheel, tool sleeve, tool handle and square tool rest;The tool anti-falling device includes storage box, support angle steel and the like;Square tool rest and other equipment in the application are straight row type, the rotation of square tool rest is realized by converter drive drive wheel and index slot, and storage box is installed below tool rest to prevent falling tool from falling to other objects during tool changing, and different types of tools can be stored on each side of tool rest, which facilitates tool changing and tool numbering, the overall size of machine tool remains unchanged and meets the operation in limited space, with the characteristics of more tools stored, higher tool changing accuracy, improved machine tool efficiency and the like.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of vertical machine tools, and relates to a machine tool spare tool magazine and an automatic tool changing control device, in particular to a machine tool spare tool magazine automatic tool changing control method. BACKGROUND

[0002] In the prior art, the current straight-line type tool magazine, disc type tool magazine and chain type tool magazine have the problem of fewer stored tools. This problem comes from the fact that the machine tool working condition is a limited space and the machine tool cross-sectional size needs to remain unchanged. Because the number and types of tools required for machining workpieces are numerous, the current machine tool spare tool magazine scheme has the problems of fewer stored tools, larger structure size to meet the tool quantity, etc. When the machine tool automatically changes tools, the operator needs to complete the on-site tool changing due to the fewer spare tool magazines, which affects the machine tool operation efficiency. If the number of stored tools is increased, it will lead to a too large tool magazine structure and appearance, which is not compatible with the machine tool main body, and does not meet the requirements that the machine tool working condition is a limited space and the machine tool cross-sectional size needs to remain unchanged. In the process of tool changing of the traditional tool arm type tool magazine, the tool handle must be horizontally loaded into the tool sleeve, the tool sleeve is turned over by 90 degrees by the action of the cylinder to be in the vertical state for tool changing, the tool changing time is long, which affects the machining efficiency, and the structure is complex, the probability of failure is large and the maintenance is complex. The chain type tool magazine chain needs to move back and forth, which makes it impossible to realize rigid support of all chains, resulting in poor mechanical rigidity, large transmission gap and poor tool magazine positioning accuracy. The disc type tool magazine has a simple structure. Because the tools are arranged in double rings or multiple rings in the disc, the tool ring arrangement increases the outer diameter of the tool magazine, resulting in low space utilization, large rotational inertia and low tool changing efficiency. The straight-line type tool magazine has a simple structure and no cylinder to drive the tools. It uses the tool fixed and the spindle moving method for tool changing. However, this tool magazine only stores a row of tools, and has the problem of fewer stored tools. SUMMARY

[0003] In view of the above problems, the present application aims to provide a machine tool spare tool magazine automatic tool changing control method.

[0004] The technical scheme of the present application is as follows: the machine tool spare tool magazine automatic tool changing control method provided by the present application comprises a machine tool main body, the machine tool main body comprises a bed body arranged at the lowermost layer, a lower base arranged above the bed body, an upper sliding table arranged above the lower base, a cross beam arranged above the upper sliding table, a ram arranged at the right end of the cross beam, a working module arranged at the right end of the ram, and a spare tool magazine arranged in front of the bed body.

[0005] Further, the spare tool magazine comprises a reducer arranged on the left side of the bed body, a converter arranged on the right side of the reducer, a driving wheel arranged on one end of the converter, a indexing slot wheel arranged on the other end of the driving wheel, a square tool holder arranged on the front end of the indexing slot wheel, a plurality of tool sleeves arranged on the four sides of the square tool holder, and a tool handle arranged on each of the plurality of tool sleeves.

[0006] Further, a motor is arranged above the reducer.

[0007] Further, a bearing seat is arranged on the rear end of the indexing slot wheel.

[0008] Further, a tool falling prevention device is arranged below the spare tool magazine in front of the bed body.

[0009] Further, the tool falling prevention device comprises a left fixed frame arranged on the left side of the front end of the bed body and a right fixed frame arranged on the right side,

[0010] A storage box is arranged between the left fixed frame and the right fixed frame in front of the bed body, and the storage box is arranged on the bed body through the lifting ring screws arranged on both sides of the upper end.

[0011] Further, two supporting angle steels are arranged below the storage box on both sides to support the storage box and are arranged on the bed body.

[0012] Further, the plurality of tool sleeves comprise at least 5 in each row, a total of 4 groups of 20 tool sleeves, and 20 corresponding tool handles.

[0013] Further, the spare tool magazine, the tool falling prevention device, and the ram and the working module are arranged on the same side of the bed body.

[0014] Further, the operation steps of the working method are as follows:

[0015] Step (1): when the machine tool needs to be changed, first read the tool number used by the current spindle motor and the side (Z) number of the tool holder (X) where the tool is located, and obtain the tool and tool holder side numbers through the data register, and compare whether the tool numbers X and Z are the same;

[0016] Step (2): if the numbers are the same, move the spindle tool to the current spindle tool holder position through XYZ to the motor, if the numbers are different, compare the number of times through the number comparison process, and rotate the tool magazine tool holder counterclockwise |X-Z| times, and finally move to the current spindle tool holder position, and place the tool through the cylinder tool release;

[0017] Step (3): Different types of tools are stored on each side of the square tool holder. Then, tool selection is performed. Tools can be selected from any position on the tool holder. First, select from the tool's current position number in ascending order. If a tool is found in an adjacent or other position, the tool selection is complete. If no tool is found in the maximum position on the side of the tool holder, return to the current position and select from the largest to the smallest. If no tool is found in the minimum position on the side of the tool holder, the tool magazine has used up the number of tools of that type and needs to be replenished in time.

[0018] Step (4): After obtaining the position of the tool to be replaced through the tool selection program, the spindle cylinder grabs the tool. After the cylinder grabs the tool, it moves the spindle tool to the machining area for subsequent machining operations, thus completing the automatic tool change.

[0019] The beneficial effects of this invention are as follows: The purpose of this invention is to provide a device for working conditions such as confined spaces and machine tool spare tool magazines requiring a large number of reserve tools. This device achieves automatic tool changing by moving the machine tool spindle and fixing the tools. The tool holder side and tools are numbered for easy management and tool selection. A storage box is installed under the tool holder to prevent tools from falling and hitting other objects during tool changing. It has the advantages of low manufacturing cost, large number of stored tools, high tool changing accuracy, easy structure maintenance, and meeting the design requirements of limited dimensions, thus significantly improving the working efficiency of machine tools. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall structure of the spare tool magazine device in this invention;

[0022] Figure 3 This is a schematic diagram of the overall structure of the tool anti-drop device in this invention;

[0023] Figure 4 This is a schematic diagram of the working principle of the present invention;

[0024] In the diagram, 1 is the bed frame, 2 is the lower base, 3 is the upper slide, 4 is the crossbeam, 5 is the bolster, and 6 is the work module.

[0025] 7 is the spare tool magazine device, 7001 is the converter, 7002 is the reducer, 7003 is the motor, 7004 is the drive wheel, 7005 is the bearing housing, 7006 is the indexing groove wheel, 7007 is the tool holder, 7008 is the tool shank, and 7009 is the square tool holder.

[0026] 8 is the knife anti-drop device, 8001 is the storage box, 8002 is the left fixing bracket, 8003 is the eye bolt, 8004 is the right fixing bracket, and 8005 is the supporting angle steel. Detailed Implementation

[0027] The specific technical solution of the present invention will be further described in detail below with reference to specific examples.

[0028] As shown in the figure, Figure 1 As shown, the present invention provides an automatic tool changing control method for a machine tool spare tool magazine, including a machine tool body, the machine tool body including a bed 1, a lower base 2 disposed above the bed 1, an upper slide 3 disposed above the lower base, a crossbeam 4 disposed above the upper slide 3, a slide 5 disposed at the right end of the crossbeam, a working module 6 disposed at the right end of the slide 5, a spare tool magazine 7 disposed in front of the bed 1, and a tool anti-drop device 8 disposed below the spare tool magazine 7.

[0029] Furthermore, such as Figure 2 As shown, a reducer 7002 is installed on the left side of the bed 1, a motor 7003 is installed above the reducer, a converter 7001 is installed on the right side of the reducer, a drive wheel 7004 is installed at the end of the converter 7001, an indexing wheel 7006 is installed on the right side of the drive wheel 7004, a bearing seat 7005 is installed at the rear end of the indexing wheel 7006, a square tool holder 7009 is installed at the front end of the indexing wheel 7006, a tool sleeve 7007 is installed above the square tool holder 7009, and a tool handle 7008 is installed above the tool sleeve 7007.

[0030] Furthermore, such as Figure 3 As shown, the tool anti-drop device 8 includes: a left fixing frame 8002 is provided on the left side of the front end of the bed 1, a right fixing frame 8004 is provided on the right side of the front end of the bed 1, a storage box 8001 is provided at the front end of the bed 1, eye bolts 8003 are provided on both sides above the storage box 8001, and supporting angle steels 8005 are provided on both sides below the storage box.

[0031] like Figure 4As shown, its working principle: when the machine tool needs to change the tool, firstly, the tool number used by the current spindle motor and the side (Z) number of the tool holder where the tool (X) is located are read, the tool and tool holder side numbers can be obtained through the data register, and whether the tool numbers X and Z are the same is compared, if the numbers are the same, the spindle tool is moved to the current spindle tool holder position through XYZ to the motor, if the numbers are not the same, the tool magazine tool holder is rotated counterclockwise |X-Z| times through the comparison times in the number comparison process, and the tool holder is rotated 90° each time, and finally moved to the current spindle tool holder position, and the tool is placed through the cylinder tool release. Then the tool selection is carried out, any position tool on the tool holder can be selected, the tool can be selected from small to large at the position number of the tool this time, if the adjacent or other position is detected to have a tool storage, the tool selection is completed, if the maximum limit position of the tool holder side is not detected to have a tool storage, the tool selection is carried out from large to small at the storage tool position this time, if the minimum limit position of the tool holder side is not detected to have a tool storage, the tool magazine of this type is used up, and needs to be supplemented in time. After the position of the tool to be replaced is obtained through the tool selection program, the tool is grabbed through the spindle cylinder, the tool is moved to the machining area after the cylinder tool grabbing is completed to carry out subsequent machining operation, that is, the automatic tool changing is completed.

[0032] The key points of the present application are: ①, the present application is used for machine tool operation in limited space and machine tool spare tool magazine needs to store more tools and the like working conditions, the machine tool spindle is moved and the tool is fixed to realize automatic tool changing, the tool holder side and the tool are numbered for easy management and tool selection, and the receiving box is installed below the tool holder to prevent the tool from falling and hitting other objects during tool changing, which has a certain protection effect; ②, the device is described in detail for the automatic tool changing control logic process, has the advantages of high tool changing precision, convenient maintenance structure, and significantly improves the working efficiency of the machine tool.

[0033] In addition, ①, the present application solves the problems of low space utilization, low tool changing efficiency, complex maintenance, poor positioning accuracy and the like in the prior art due to the large number of stored tools, has the characteristics of compact structure, high positioning accuracy, convenient maintenance, high stability and reliability and the like; ②, the tool magazine of the present application is convenient for tool changing and tool numbering, meets the working conditions of operation in limited space while keeping the overall size of the machine tool unchanged, well utilizes the limited space to store multiple tools, the number of tools can meet the machining operation of different processes of the machine tool, and the working efficiency of the machine tool can be improved.

[0034] The tool changing magazine adopts a square tool rest 7009, is driven by a power source, and the tool holder placing type is a straight row type. The power driving device is a motor 7003 driving, the rotation of the square tool rest 7009 is realized through a converter 7001 driving a driving wheel 7004 and a indexing slot wheel 7006, a receiving box 8001 is installed below the tool rest to prevent the tool from falling and hitting other objects during the tool changing process, and different types of tools can be stored on each side of the tool rest, which is convenient for tool changing and tool numbering. The overall size of the machine tool remains unchanged and meets the operation in a limited space, has the characteristics of compact structure, more stored tools, high tool changing precision, improved machine tool working efficiency and the like.

Claims

1. A machine tool spare tool magazine automatic tool changing control method including a machine tool main body, characterized by, The machine tool body comprises a bed body (1) arranged at the bottom layer, a lower base (2) arranged above the bed body (1), an upper slide (3) arranged above the lower base (2), a beam (4) arranged above the upper slide (3), a ram (5) arranged at the right end of the beam (4), a work module (6) arranged at the right end of the ram (5), and a spare tool magazine (7) arranged in front of the bed body (1); The spare tool magazine (7) comprises a reducer (7002) arranged on the left side of the bed body (1), a converter (7001) arranged on the right side of the reducer (7002), a drive wheel (7004) arranged at one end of the converter (7001), a indexing slot wheel (7006) arranged at the other end of the drive wheel (7004), a square tool holder (7009) arranged at the front end of the indexing slot wheel (7006), a plurality of tool sleeves (7007) arranged in a distributed manner above the four sides of the square tool holder (7009), and a tool handle (7008) arranged above each of the plurality of tool sleeves (7007); A motor (7003) is arranged above the reducer (7002); A bearing seat (7005) is arranged at the rear end of the indexing slot wheel (7006); A tool falling prevention device (8) is further arranged below the spare tool magazine (7) in front of the bed body (1); The tool falling prevention device (8) comprises a left fixed frame (8002) arranged on the left side of the front end of the bed body (1) and a right fixed frame (8004) arranged on the right side, A storage box (8001) is arranged between the left fixed frame (8002) and the right fixed frame (8004) in front of the bed body (1), and the storage box (8001) is arranged on the bed body (1) through the lifting ring screws (8003) arranged on both sides of the upper end; Two support angle steels (8005) are arranged below both sides of the storage box (8001) for supporting the storage box (8001) and arranged on the bed body (1); The plurality of tool sleeves (7007) comprises at least 5 tool sleeves (7007) in each row, a total of 4 groups of 20 tool sleeves (7007), and corresponding 20 tool handles (7008); The spare tool magazine (7), the tool falling prevention device (8), the ram (5), and the work module (6) are all arranged on the same side of the bed body (1); The operation steps of the working method are as follows: Step (1): When the machine tool needs to be changed, first read the tool number used by the current spindle motor and the side (Z) number of the tool holder (X) where the tool is located, and obtain the tool and tool holder side numbers through the data register, and compare whether the tool numbers X and Z are the same; Step (2): If the numbers are the same, move the spindle tool to the current spindle tool holder position through XYZ motor, if the numbers are different, rotate the tool magazine in the counterclockwise direction |X-Z| times through the number comparison process, and finally move to the current spindle tool holder position, and place the tool through the cylinder tool release. Step (3): Different types of tools are stored on each side of the square tool holder (7009), and then the tool selection is performed. Any tool on the tool holder can be selected. First, the tool selection is performed from small to large according to the position number of the tool. If a tool is detected at the adjacent or other position, the tool selection is completed. If no tool is detected at the maximum limit position of the tool holder side, the tool selection is performed from large to small at the current tool storage position. If no tool is detected at the minimum limit position of the tool holder side, the tool storage quantity of the type of tool in the tool magazine has been used up, and it needs to be replenished in time. Step (4): After obtaining the position of the tool to be replaced through the tool selection program, the spindle cylinder performs tool grabbing. After the cylinder tool grabbing is completed, the spindle tool is moved to the machining area for subsequent machining operation, that is, the automatic tool changing is completed.

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