Processing center rotary tool magazine with positioning function

Abstract

The application discloses a machining center rotary tool magazine with positioning function and relates to the technical field of machining.The machining center rotary tool magazine comprises an ear-shaped shell, a semicircular rotary conveying belt assembly arranged in the ear-shaped shell, a driving wheel assembly, a driven wheel assembly and a continuous loop conveying belt, a plurality of assembly groove assemblies arranged on the outer periphery of the loop conveying belt, a tool holder adjusting frame corresponding to each assembly groove assembly, a tool body structure matched with each tool holder adjusting frame, a tool shaft butt joint arranged on the ear-shaped shell, an ejection V-shaped guide groove structure arranged on the driven wheel assembly, and a U-shaped oil injection pipe assembly arranged on the lower part of the ear-shaped shell corresponding to a first outward protruding processing area.The C-shaped layout of the ear-shaped shell and the semicircular rotary conveying belt, the accurate positioning of the V-shaped guide groove cooperating with the two end outward protruding processing areas, and the automatic maintenance of the lower U-shaped oil injection pipe realize the compactness, high-precision tool changing and oil injection maintenance of the tool magazine.

Description

Technical Field

[0001] This invention relates to the field of machining technology, specifically to a rotary tool magazine for a machining center with positioning function. Background Technology

[0002] Tool magazines are an important component of CNC machining centers (such as vertical machining centers and drilling and tapping centers), used to store and automatically change various tools required for machining. Currently, common tool magazine structures mainly include disc-type tool magazines, slat-type tool magazines, and chain-type tool magazines. First, disc-type tool magazines typically use a rotating disc structure with tools evenly arranged along the circumference. Tool selection and changing are achieved by rotating the disc. However, their radial dimension is large, requiring a large installation space. Furthermore, disc-type tool magazines are often limited by the internal space of the machine tool, making it difficult to achieve a reasonable layout. Secondly, the chain-type tool magazine drives the linear movement of the tool through the chain, which can accommodate more tools. However, the chain drive has backlash and cumulative error, which leads to a decrease in the positioning accuracy of the tool at the tool change position (i.e. the docking point with the spindle), which in turn causes problems such as tool collision, tool drop or tool change jamming. Furthermore, existing tool magazine systems typically rely on motor indexing or cylinder positioning, lacking mechanical guidance and backlash elimination mechanisms; Finally, most knife maintenance methods rely on manual oiling, which is labor-intensive and inefficient. Therefore, it is necessary to provide a new type of tool magazine that is compact in structure, has positioning and anti-misalignment features, and is easy to maintain. Summary of the Invention

[0003] The purpose of this invention is to provide a rotary tool magazine for machining centers with positioning function. This mechanism uses an ear-shaped shell as a supporting frame and a semi-circular rotary conveyor belt to significantly reduce the radial dimension and save space. By setting outwardly convex treatment areas at both ends of the conveyor belt and combining them with a V-groove ejection mechanism, rigid guidance and precise positioning of the tool holder are achieved, eliminating transmission backlash and ensuring high precision and high reliability of tool changing. At the same time, a U-shaped oil spray pipe is arranged in the lower first outwardly convex area to automatically spray oil on the tool for circumferential maintenance, effectively extending tool life and reducing manual maintenance.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a rotary tool magazine for a machining center with positioning function, comprising: an ear-shaped housing; a semi-circular rotary conveyor belt assembly disposed within the ear-shaped housing, the semi-circular rotary conveyor belt assembly including a driving wheel assembly and a driven wheel assembly; a continuous loop conveyor belt, the loop conveyor belt bypassing the driving wheel assembly and the driven wheel assembly and forming an upper and lower layered, semi-circular, intermittent rotary conveying path when driven by the driving wheel; and a plurality of assembly slot assemblies disposed on the outer periphery of the loop conveyor belt and arranged in an array, each assembly slot assembly correspondingly assembling a tool holder adjustment frame and a tool body structure adapted to each tool holder adjustment frame, the plurality of tool body structures being assembled on the corresponding tool holder adjustment frame and arrayed outside the loop conveyor belt. The device forms a dynamic rotating tool magazine structure, with the tool body structure exposed at the outer ends of the drive wheel assembly and driven wheel assembly, forming a first and second outward convex processing area, respectively. A tool shaft interface is provided on the ear-shaped housing corresponding to the second outward convex processing area, for inserting a tool shaft and selectively engaging several tool body structures on the loop conveyor belt. The driven wheel assembly is also equipped with an ejection V-groove structure, used to trigger an ejection action in the second outward convex processing area when the loop conveyor belt stops, to push out the tool holder adjustment frame and guide its positioning, ensuring precise engagement between the tool body structure and the tool shaft. A U-shaped oil spray pipe assembly is provided at the lower part of the ear-shaped housing corresponding to the first outward convex processing area, for circumferential oil spraying of the outward convex tool body structure to maintain its integrity.

[0005] Preferably, the ear-shaped housing includes an outer shell and a cover, wherein one end of the outer shell and the cover are rotatably mounted via a hinge, and the other end is provided with a pin structure; the pin structure includes a connecting ring and an assembly ring respectively fixed to the side walls of the outer shell and the cover, a pin body disposed within the assembly ring, one end of the pin body being able to insert into the connecting ring, and the other end being fixed with a lever, and a third spring disposed on the outer periphery of the pin body between the lever and the assembly ring; it also includes a magnetic window door directly opposite the tool shaft interface and disposed on the outer shell, the magnetic window door being located on the side of the second protruding processing area, used for the tool shaft, The tool body structure automatically opens and closes during removal. The magnetic door includes an opening slot formed on the side wall of the outer shell and communicating with the tool shaft interface. A pin is provided on one side of the opening slot, a bushing is hinged to the pin, a first torsion spring is provided between the bushing and the pin, and a transparent door body fixed to the bushing and used for opening and closing the opening slot. A first magnetic sheet and a second magnetic sheet are respectively provided on the side of the transparent door body away from the bushing and the side of the opening slot away from the pin, and the first magnetic sheet and the second magnetic sheet are magnetically attracted to each other. A transparent observation window is also fixed in the middle of the shell cover to facilitate observation of the tool magazine rotation structure inside the ear-shaped shell.

[0006] Preferably, the semi-circular rotary conveyor belt assembly further includes an arc-shaped double-layer frame, the driving wheel assembly and the driven wheel assembly are respectively assembled at both ends of the arc-shaped double-layer frame, and a plurality of limiting members are provided on the edge of the arc-shaped double-layer frame; the loop conveyor belt includes a conveyor belt body, the outer peripheral edge of the conveyor belt body is provided with a contour protrusion, and the plurality of limiting members are arranged in a loop conveyor belt contour array on the arc-shaped double-layer frame and are used to tension and limit the contour protrusion to adjust the radial tension of the conveyor belt body; the limiting module includes a side frame arranged in a loop conveyor belt contour array on the arc-shaped double-layer frame, and each side frame is rotatably mounted with a limiting member.

[0007] Preferably, the drive wheel assembly includes a drive wheel body with a tapered longitudinal section, rotatably assembled to one end of the arc-shaped double-layer frame via a bearing seat, and an intermittent transmission disc mechanism disposed on the arc-shaped double-layer frame near the drive wheel body and connected to the drive wheel body; the intermittent transmission disc mechanism includes a first mounting frame, a disc body rotatably mounted on the lower part of the vertical section of the first mounting frame, the disc body being connected to the end of the drive wheel body, and a plurality of grooves and a plurality of U-shaped grooves alternately formed on the outer periphery of the disc body; a horizontal shaft rotatably mounted on the upper part of the first mounting frame, wherein a first transmission wheel is fixed at one end of the horizontal shaft, and a disc is provided at the other end, and a semi-circular wheel and a shift post respectively provided in the middle and on one side of the disc can respectively make transmission contact with the grooves and U-shaped grooves; it also includes a second mounting frame fixed to one end of the arc-shaped double-layer frame, a motor provided on the side wall of the second mounting frame is fixed to a second transmission wheel via a coupling, and a transmission belt is sleeved between the second transmission wheel and the first transmission wheel, which is used to drive the drive wheel body to rotate intermittently when the motor is running.

[0008] Preferably, the driven wheel assembly includes a driven wheel body, which has the same structure as the driving wheel body and is rotatably mounted on the other end of the arc-shaped double-layer frame, and a through groove annularly opened on the driven wheel body. The conveyor belt body has rectangular grooves arranged at equal intervals, and the circumferential distance between two adjacent through grooves is a multiple of the distance between two adjacent rectangular grooves.

[0009] Preferably, each of the assembly slot components includes a rectangular frame disposed on each of the rectangular slots, the rectangular frame being made of rubber; each of the tool holder adjustment frames includes a deflection adjustment frame and a snap-fit ​​tool holder assembled with the deflection adjustment frame, wherein the deflection adjustment frame includes end bushings mounted on both sides of the inner end of the rectangular frame, and a mounting shaft rotatably connected to the two end bushings, with limit end blocks fixed at both ends of the mounting shaft, and a second torsion spring connected between the opposite ends of the two limit end blocks and the two end bushings, and an adjustment support rod splinedly mounted in the middle of the mounting shaft and capable of horizontal movement, wherein one side of the adjustment support rod interacts with the ejection V-guide groove structure, and the other side is used for the assembly of the snap-fit ​​tool holder, and two telescopic columns are respectively connected between the opposite ends of the two limit end blocks and both sides of the adjustment support rod, and a first spring is sleeved on the outer periphery of each telescopic column.

[0010] Preferably, each of the snap-fit ​​tool holders includes a base body fixed to the side wall of the adjusting support rod. Clamping arms and clamping handles are rotatably mounted on both sides of the bottom of the base body via a rotating shaft. The two clamping arms are symmetrically distributed and form a covering clamping structure. A second spring connects the two clamping handles fixed to the two clamping arms. A limiting plate is located at the center of the bottom of the base body for outward expansion of the two clamping arms in their initial state. The tool body structure includes a tool body and a stepped groove fitted to the middle of the tool body. The stepped groove can snap into and limit the fitting between the two clamping arms.

[0011] Preferably, the ejection V-groove structure includes a support bar internally disposed in the driven wheel body, wherein one end of the support bar extends through a through hole opened at the end of the driven wheel body to the outer side of the end of the driven wheel body and is connected to an end fixing member, the end fixing member is fixedly assembled on the arc-shaped double-layer frame, and the support bar is provided with a plurality of electric telescopic rods, a guide ejection member fixed to the telescopic ends of the plurality of electric telescopic rods, and a guide V-shaped strip connected to the side wall of the adjusting support rod, and the guide V-shaped strip can be adapted to contact the guide ejection member.

[0012] Preferably, the arc-shaped double-layer frame is also fixed with a cutter shaft docking sleeve at one end near the driven wheel assembly. The cutter shaft docking sleeve is located in the second convex processing area and is distributed directly below the cutter shaft docking interface. It has an opening on one side near the magnetic door body and a limit groove is formed longitudinally on the other side.

[0013] Preferably, the U-shaped fuel injection pipe assembly includes a three-way pipe laterally distributed on the housing near the drive wheel assembly, wherein one horizontal end of the three-way pipe is closed, the other horizontal end passes through a mounting hole opened in the side wall of the housing and is provided with a connecting end, and a U-shaped pipe communicating with the vertical end of the three-way pipe, and nozzles are equidistantly connected to the inner side of the U-shaped pipe.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention uses an ear-shaped shell as the external support frame and incorporates a semi-circular rotary conveyor belt, resulting in a flat C-shaped layout for the tool magazine. This significantly reduces the radial dimension and saves machine tool space. Simultaneously, at the convex treatment areas at both ends of the conveyor belt, a V-groove structure is used to precisely push out and rigidly guide the tool holder adjustment frame, eliminating transmission backlash and ensuring high coaxiality and repeatability during tool changes. Furthermore, a U-shaped oil spray pipe is installed at the lower part of the shell corresponding to the first convex area to automatically spray oil on the tool for maintenance, significantly extending tool life and reducing manual maintenance costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 Enlarged structural diagram at point B; Figure 3 for Figure 1 A schematic diagram of the side view structure; Figure 4 for Figure 3 A schematic diagram of the internal structure cut along section AA; Figure 5 This is a schematic diagram of the ear-shaped housing in the open state of the present invention; Figure 6 for Figure 5 Another perspective structural diagram; Figure 7 for Figure 5 Enlarged structural diagram of the middle tool holder adjustment bracket and tool body assembly; Figure 8 for Figure 6 Enlarged structural diagram of the middle tool holder adjustment bracket and tool body assembly; Figure 9 This is a schematic diagram of the disassembled structure of the semi-circular rotary conveyor belt assembly in this invention; Figure 10 for Figure 9 A partially enlarged structural diagram; Figure 11 This is a schematic diagram of the assembly structure of the semi-circular rotary conveyor belt assembly in this invention; Figure 12 for Figure 11 A schematic diagram of the internal structure cut along the CC axis; Figure 13 for Figure 11 Schematic diagram of the internal structure cut along the middle DD section; Figure 14 for Figure 13 A partially enlarged structural diagram; Figure 15 for Figure 13 Enlarged structural diagram at point E; Figure 16 for Figure 11 A magnified structural diagram at point G in the middle; Figure 17 for Figure 12 A magnified schematic diagram of the structure at point F.

[0016] In the picture: 01. Outer shell; 011. Hinge; 012. Shell cover; 013. Transparent observation window; 014. Tool shaft mating interface; 015. Pin shaft; 016. Bushing; 017. Transparent door body; 018. Assembly ring; 019. Insertion ring; 0120. Pin body; 0121. Handle; 0122. Third spring; 02. Arc-shaped double-layer frame; 021. Drive wheel; 022. Driven wheel; 0221. Through groove; 023. Conveyor belt; 0231. Rectangular groove; 024. Contour ridge; 025. Side frame; 026. Limiting component; 03. Rectangular frame; 031. Mounting shaft; 032. Adjusting support rod; 033. Limiting end block; 034. Telescopic column; 035. First spring; 036. End bushing; 037. Second torsion spring; 04. Base; 041. Rotating shaft; 042. Clamping arm; 043. Clamping handle; 044. Second spring; 045. Limiting plate; 05. Blade body; 051. Stepped groove; 06. First mounting bracket; 061. Disc body; 062. Groove; 063. U-shaped groove; 064. Disc; 065. Semi-circular wheel; 066. Shift post; 067. First transmission wheel; 068. Second mounting bracket; 069. Motor; 0610. Coupling; 0611. Second transmission wheel; 0612. Transmission belt; 07. Cutter shaft mating sleeve; 071. End fixing component; 072. Support bar; 073. Electric telescopic rod; 074. Guide ejector component; 075. Guide V-shaped strip; 076. Limiting groove; 08. T-joint; 081. Connecting end; 082. U-shaped tube; 083. Nozzle. Detailed Implementation

[0017] In the description of this invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. The various embodiments of this invention are described in detail below with reference to the accompanying drawings.

[0018] Example 1 Please see Figures 1 to 17 The present invention preferably provides the following technical solution: an ear-shaped housing; a semi-circular rotary conveyor belt assembly disposed within the ear-shaped housing, the semi-circular rotary conveyor belt assembly including a driving wheel assembly and a driven wheel assembly; a continuous loop conveyor belt, the loop conveyor belt bypassing the driving wheel assembly and the driven wheel assembly, and forming upper and lower layers of intermittent rotary conveying paths in a semi-circular shape when driven by the driving wheel; and a plurality of assembly slot assemblies disposed on the outer periphery of the loop conveyor belt and arranged in an array, each assembly slot assembly correspondingly assembling a tool holder adjustment frame, and a tool body structure adapted to each tool holder adjustment frame, the plurality of tool body structures being assembled on the corresponding tool holder adjustment frame and arrayed on the outer periphery of the loop conveyor belt to form a dynamic tool magazine rotation structure, and The cutter body structure is exposed at the outer ends of the drive wheel assembly and the driven wheel assembly, forming a first convex treatment area and a second convex treatment area, respectively. The ear-shaped housing has a cutter shaft interface 014 corresponding to the second convex treatment area, which is used to insert the cutter shaft and selectively mate with several cutter body structures on the loop conveyor belt. The driven wheel assembly is also equipped with an ejection V-groove structure, which is used to trigger an ejection action in the second convex treatment area when the loop conveyor belt stops, so as to push out the cutter holder adjustment frame and guide and position it so that the cutter body structure is precisely mated with the cutter shaft. The lower part of the ear-shaped housing is provided with a U-shaped oil spray pipe assembly corresponding to the first convex treatment area, which can be used to spray oil around the convex cutter body structure to maintain the cutter body structure.

[0019] This invention, such as Figure 1 , 4 As shown in Figure 5, an ear-shaped housing is used as the external support frame, combined with an internal semi-circular rotary conveyor belt assembly, resulting in a flat "C"-shaped or ear-shaped layout for the tool magazine. Compared to traditional fully circular tool magazines, this design significantly reduces the radial dimensions of the equipment, making it particularly suitable for space-constrained machining center layouts. This effectively saves machine tool footprint and improves the compactness of the machining center. Secondly, this invention innovatively designs a first convex processing area and a second convex processing area at both ends of the conveyor belt (at the driving wheel and the driven wheel), respectively, such as... Figure 5 , 9 As shown in Figure 10: When the tool body structure moves to the second convex processing area, the ejection action triggered by the ejection V guide groove structure can accurately push out the tool holder adjustment frame and perform rigid guidance and positioning. This combination of V-shaped guide groove and convex positioning eliminates the backlash caused by traditional chain drive, ensuring that the tool body has extremely high coaxiality and repeatability when docking with the tool shaft interface 014, effectively preventing tool collision or tool drop during tool changing. like Figure 9 , 12As shown, the tool body structure is assembled on the loop conveyor belt through the tool holder adjustment bracket, and can protrude outward in a specific area, which allows the tool body to be in the most suitable insertion posture when it is close to the spindle interface; Furthermore, the present invention provides a U-shaped fuel injection pipe assembly at the lower part of the ear-shaped housing corresponding to the first outwardly convex processing area, such as... Figure 9 As shown, this design cleverly utilizes the physical state of the tool body waiting or transitioning in the first convex area to perform automated, multi-directional circumferential oil spraying maintenance on its outer periphery, effectively reducing tool rust and wear, greatly extending the service life of the tool body structure, and reducing manual maintenance costs. In summary, by setting up several assembly slot components and corresponding tool holder adjustment frames distributed in an array, the clamping, disassembly, and quantity adjustment of tools become extremely convenient. Operators only need to operate on a single array module to selectively replace tools, which greatly reduces the difficulty of equipment maintenance and the labor intensity of workers.

[0020] Example 2 In another embodiment of the present invention, the ear-shaped housing includes an outer shell 01 and a cover 012, wherein one end of the outer shell 01 and the cover 012 are rotatably mounted via a hinge 011, and the other end is provided with a pin structure; the pin structure includes a insertion ring 019 and an assembly ring 018 respectively fixed to the side walls of the outer shell 01 and the cover 012, a pin body 0120 disposed inside the assembly ring 018, one end of the pin body 0120 being able to insert into the insertion ring 019, and the other end being fixed with a lever 0121, and a third spring 0122 disposed on the outer periphery of the pin body 0120 between the lever 0121 and the assembly ring 018; it also includes a magnetic door that is directly opposite to the tool shaft interface 014 and disposed on the outer shell 01, the magnetic door being located in the second The outer convex processing area is used to automatically open and close during the removal of the tool shaft and tool body structure. The magnetic door includes an opening groove on the side wall of the outer shell 01 and connected to the tool shaft interface 014. A pin 015 is provided on one side of the opening groove, a bushing 016 is hinged to the pin 015, a first torsion spring is provided between the bushing 016 and the pin 015, and a transparent door body 017 is fixed to the bushing 016 and used for opening and closing the opening groove. A first magnetic sheet and a second magnetic sheet are respectively provided on the side of the transparent door body 017 away from the bushing 016 and the side of the opening groove away from the pin 015, and the first magnetic sheet and the second magnetic sheet are magnetically attracted to each other. A transparent observation window 013 is also fixed in the middle of the shell cover 012 to facilitate observation of the tool magazine rotation structure inside the ear-shaped shell.

[0021] like Figure 1 , 2As shown in Figures 5 and 6, it is known that the outer shell 01 and the cover 012 are rotatably installed at one end by hinge 011, and the other end of the two are connected by a pin structure. The pin structure can be unlocked or unlocked by pulling the pin body 0120, thereby realizing the opening and closing process of the outer shell 01 and the cover 012. This is an existing mature technology and will not be described in detail. The transparent observation window 013 set on the shell cover 012 facilitates the observation of the switching of several blade structures inside the ear-shaped shell and the docking of the blade shaft and blade structure. A magnetic door is located outside the second protruding processing area. Its opening slot is connected to the cutter shaft interface 014, and a bushing 016 and a transparent door body 017 are rotatably mounted via a pin 015 on one side of the door. A first magnetic sheet and a second magnetic sheet are respectively located on the other side of the opening slot, and the first and second magnetic sheets are magnetically attracted to each other. Figure 1 , 3 As shown in Figures 4 and 6, after inserting the cutter shaft longitudinally into the cutter shaft interface 014 and removing the required cutter body structure, the transparent door 017 can be deflected laterally to remove the cutter body structure.

[0022] Example 3 In another embodiment of the present invention, the semi-circular rotary conveyor belt assembly further includes an arc-shaped double-layer frame 02, a drive wheel assembly and a driven wheel assembly respectively assembled at both ends of the arc-shaped double-layer frame 02, and a plurality of limiting members 026 provided on the edge of the arc-shaped double-layer frame 02; the loop conveyor belt includes a conveyor belt body 023, the outer peripheral edge of the conveyor belt body 023 is provided with a contour protrusion 024, and the plurality of limiting members 026 are arranged in a loop conveyor belt contour array on the arc-shaped double-layer frame 02 and are used to tension and limit the contour protrusion 024 to adjust the radial tension of the conveyor belt body 023; the limiting module includes a side frame 025 arranged in a loop conveyor belt contour array on the arc-shaped double-layer frame 02, and each side frame 025 is rotatably mounted with a limiting member 026 on its side.

[0023] like Figure 4 , 5 As shown in Figure 12, an arc-shaped double-layer frame 02 is used as the main frame, with the drive wheel assembly and driven wheel assembly installed at both ends respectively. The overall structure is a "C"-shaped semi-circular layout. Compared with traditional chain or disc tool magazines, this structure significantly reduces the radial dimension of the tool magazine, making it easier to embed into the interior of machining centers with limited space. In addition, the double-layer frame provides two independent mounting planes, ensuring the stability of the tool magazine during long-term operation. Secondly, the outer periphery of the conveyor belt body 023 is provided with contour protrusions 024, and the edge array of the arc-shaped double-layer frame body 02 has several side frames 025 and rotatably mounted limiting parts 026. The limiting parts 026 roll contact with the inner side of the contour protrusions 024, forming a radial constraint on the conveyor belt. It can independently adjust the radial tension of the conveyor belt body 023, ensuring the conveying position accuracy of the blade structure. Moreover, the multi-point limiting design allows the conveyor belt to remain close to the track even at arc-shaped bends, preventing jumping caused by centrifugal force or uneven load, thereby ensuring the stable conveying of several blade structures by the conveyor belt body 023. Each limiting member 026 is located on a side frame 025 fixed to the edge of the arc-shaped double-layer frame 02. The limiting member 026, which is rotatably mounted on the side frame 025, can make transmission contact with the inner side of the contour protrusion 024 to ensure the conveyor belt 023 is conveyed while ensuring the stability of the conveying.

[0024] Furthermore, the drive wheel assembly includes a drive wheel body 021, which has a tapered longitudinal section and is rotatably assembled to one end of the arc-shaped double-layer frame 02 via a bearing seat. An intermittent transmission disc mechanism is disposed on the arc-shaped double-layer frame 02 near and connected to the drive wheel body 021. The intermittent transmission disc mechanism includes a first mounting frame 06, a disc body 061 rotatably mounted on the lower vertical section of the first mounting frame 06, the disc body 061 being connected to the end of the drive wheel body 021, and several grooves 062 and several U-shaped grooves 063 alternately formed on the outer periphery of the disc body 061. A horizontal shaft is rotatably mounted on the upper part of the first mounting frame 06. The horizontal shaft has a first transmission wheel 067 fixed at one end and a disc 064 at the other end. The disc 064 has a semi-circular wheel 065 and a pusher 066 respectively provided in the middle and on one side, which can make transmission contact with the groove 062 and the U-shaped groove 063 respectively. It also includes a second mounting bracket 068 fixed to one end of the arc-shaped double-layer frame 02. The motor 069 provided on the side wall of the second mounting bracket 068 is fixed to the second transmission wheel 0611 through the coupling 0610. A transmission belt 0612 is sleeved between the second transmission wheel 0611 and the first transmission wheel 067. When the motor 069 is running, it is used to drive the drive wheel 021 to rotate intermittently.

[0025] like Figure 9 , 10As shown in Figures 12, 14, 16, and 17, the driving wheel 021 and driven wheel 022 are assembled at both ends of the arc-shaped double-layer frame 02 and are respectively provided with an intermittent transmission disc mechanism and several through slots 0221. The disc body 061 containing the intermittent transmission disc mechanism is connected to the driving wheel 021, and its outer circumference is sequentially provided with a groove 062 and a U-shaped groove 063. Simultaneously, a disc 064 connected to the motor 069 is connected via a second transmission wheel 0611, a first transmission wheel 067, and a semi-circular wheel 065. The semi-circular wheel 065, fixed in its middle, can make transmission contact with the groove 062, and a lever 066 provided on one side can make transmission contact with the U-shaped groove 063. Figure 16 , 17 As shown, when the disk 064 rotates, the semi-circular wheel 065 and the push post 066 can contact the several grooves 062 and several U-shaped grooves 063 that are distributed in an alternating manner; When the semi-circular wheel 065 contacts the groove 062, the disc body 061 remains stationary. When the push pin 066 extends into the U-shaped groove 063 and pushes the disc body 061, the disc body 061 can rotate, thereby realizing the intermittent rotation process of the drive wheel body 021. Furthermore, the driven wheel assembly includes a driven wheel body 022, which has the same structure as the driving wheel body 021 and is rotatably mounted on the other end of the arc-shaped double-layer frame 02, and a through groove 0221 annularly opened on the driven wheel body 022. The conveyor belt body 023 is provided with rectangular grooves 0231 arranged at equal intervals. The circumferential distance between two adjacent through grooves 0221 is a multiple of the distance between two adjacent rectangular grooves 0231, which is used to achieve stable alignment of the through grooves 0221 and the rectangular grooves 0231.

[0026] The tapered structure of the active wheel and driven wheel assembly allows the conveyor belt to automatically move towards the center during operation, cooperating with the contour convex strip to prevent deviation. The driven wheel body 022 has a ring-shaped through groove 0221, and the spacing between adjacent through grooves 0221 is set as a multiple of the spacing between rectangular grooves 0231 on the conveyor belt body 023. That is, when the conveyor belt steps a basic distance, the angle through which the driven wheel rotates ensures that the through groove 0221 is always aligned with the rectangular groove 0231. The multiple relationship allows the driven wheel to not only serve as an auxiliary positioning reference, but also facilitates the subsequent ejection of the V-guide groove structure.

[0027] Example 4 In another embodiment of the present invention, each assembly slot assembly includes a rectangular frame 03 disposed on each rectangular slot 0231, the rectangular frame 03 being made of rubber; each tool holder adjustment frame includes a deflection adjustment frame and a snap-fit ​​tool holder assembled with the deflection adjustment frame, wherein the deflection adjustment frame includes end bushings 036 installed on both sides of the inner end of the rectangular frame 03, and a mounting shaft 031 rotatably connected to the two end bushings 036, the two ends of the mounting shaft 031 are respectively fixed with limit end blocks 033, the opposite ends of the two limit end blocks 033 are respectively connected to the two end bushings 036 with a second torsion spring 037, and an adjustment support rod 032 splinedly assembled in the middle of the mounting shaft 031 and capable of horizontal movement, one side of the adjustment support rod 032 interacts with the ejection V guide groove structure, and the other side is used for snap-fit ​​tool holder assembly, the opposite ends of the two limit end blocks 033 are respectively connected to two telescopic columns 034 on both sides of the adjustment support rod 032, and each telescopic column 034 is sleeved with a first spring 035 on its outer periphery.

[0028] like Figure 7 , 8 As shown, the adjusting rod 032 is splined to the middle of the mounting shaft 031 and can move horizontally in the axial direction. One side of the adjusting rod interacts with the ejector V-guide groove structure (for being pushed out), and the other side is used to engage the tool holder. The limiting end block 033 is connected to the adjusting rod 032 by a telescopic column 034 and a sleeved first spring 035. The first spring 035 and the telescopic column form an axial elastic floating mechanism. When the ejector V-guide groove structure pushes the adjusting rod 032 outward, the second torsion spring 037 and the first spring 035 are activated. After docking, the spring provides a restoring force to make the adjusting rod automatically return to its initial position. Considering the cumulative error of the clearance during operation, the adjusting support rod 032 provided in this application can be further as follows: Figure 10 As shown, the positive correction of the tool body structure is further realized. Combined with the explanation of the ejection V guide groove structure in Example 5, in this design, the axial floating function can absorb the axial impact during the insertion of the tool shaft, and can also guide and adjust the position of the snap-fit ​​tool holder. like Figure 5 As shown, when the tool holder moves forward or backward, the relative Figure 7 , 10 When the tool body is in a state closer to the limit end block 033 on one side, i.e., when the tool body is not fully aligned, the floating stroke provides error tolerance and improves the success rate of tool changing. When the drive wheel assembly operates, causing the required tool body structure to move to the second convex processing area, the tool body structure moves to below the tool shaft interface 014. Due to the conical structure of the driven wheel 022, in order to align the tool body structure in the second convex processing area with the tool shaft interface 014, as shown... Figure 7 , 10At this time, the V-shaped guide groove structure can push the adjusting rod 032 outward, and the adjusting rod 032 will deflect around the mounting shaft 031 to make the tool holder and tool body structure on the adjusting rod 032 swing to directly below the tool shaft interface 014 for centering.

[0029] Furthermore, each clamping tool holder includes a base 04 fixed to the side wall of the adjusting support rod 032. Both sides of the bottom of the base 04 are rotatably mounted with clamping arms 042 and clamping handles 043 via rotating shafts 041. The two clamping arms 042 are symmetrically distributed and form a covering clamping structure. A second spring 044 is connected between the two clamping handles 043 fixed to the two clamping arms 042. A limiting plate 045 is set at the center of the bottom of the base 04 for the outward expansion of the two clamping arms 042 in the initial state. The tool body structure includes a tool body 05 and a stepped groove 051 assembled with the middle of the tool body 05. The stepped groove 051 can be engaged between the two clamping arms 042 and limited and assembled with them.

[0030] like Figure 8 , 10 As shown in Figures 14 and 15, the interconnected clamping arms 042 and clamping handle 043 are rotatably mounted on the bottom of the base 04 via a rotating shaft 041, and a second spring 044 is provided between them. Because the limiting plate 045 can expand the two clamping arms 042 in the initial state, when the cutter shaft is aligned with the head of the cutter body 05, it can move as shown in Figures 14 and 15. Figure 10 Move the cutter body 05 away from the driven wheel 022. At this time, the stepped groove 051 in the middle of the cutter body 05 disengages from the two clamping arms 042. The reset is achieved by the action of the second spring 044. When it is necessary to assemble the blade body 05 between the two clamping arms 042, since the two clamping arms 042 are initially in a slightly open state, the stepped groove 051 in the middle of the blade body 05 can be directly inserted between the two clamping arms 042.

[0031] Example 5 In another embodiment of the present invention, the ejection V-groove structure includes a support bar 072 internally disposed in the driven wheel body 022. One end of the support bar 072 extends through a through hole at the end of the driven wheel body 022 to the outside of the end of the driven wheel body 022 and is connected to an end fixing member 071. The end fixing member 071 is fixedly mounted on the arc-shaped double-layer frame 02. The support bar 072 is provided with a plurality of electric telescopic rods 073, a guide ejection member 074 fixed to the telescopic ends of the plurality of electric telescopic rods 073, and a guide V-shaped strip 075 connected to the side wall of the adjusting support rod 032. The guide V-shaped strip 075 can be adapted to contact the guide ejection member 074.

[0032] like Figure 10As shown, the support bar 072, which is fixed to the arc-shaped double-layer frame 02, is built into the driven wheel body 022. It is equipped with a guide ejector 074 through several electric telescopic rods 073. The guide ejector 074 can pass through the through slot 0221 opened on the side wall of the driven wheel body 022 and the rectangular slot 0231 opened on the side wall of the conveyor belt body 023 to contact the guide V-shaped strip 075 on the adjusting support rod 032 of the second outward convex processing area, thereby realizing the lateral correction operation of the blade structure on the adjusting support rod 032. It is worth noting that: First, such as Figure 10 , 14 As shown, the cross-section of the guide ejector 074 is approximately V-shaped. Under the action of the guide V-shaped strip, when the guide ejector 074 passes through the corresponding rectangular groove 0231 and through groove 0221 and contacts the guide V-shaped strip 075, it pushes the adjusting rod 032 outward on the one hand, and under the structural characteristics of the guide ejector 074 and the guide V-shaped strip 075, it further moves the adjusting rod 032 back and forth to make the tool body structure on the adjusting rod 032 accurately correct its deviation, thereby driving the tool head structure to be accurately positioned directly below the tool shaft interface 014, achieving accurate docking between the tool shaft and the tool head structure, and ensuring the accuracy of tool removal.

[0033] Furthermore, a cutter shaft mating sleeve 07 is fixed at one end of the arc-shaped double-layer frame 02 near the driven wheel assembly. The cutter shaft mating sleeve 07 is located in the second protruding processing area and is distributed directly below the cutter shaft mating interface 014. It has an opening on one side near the magnetic door body, and a limit groove 076 is longitudinally opened on the other side.

[0034] like Figure 10 As shown, in order to further improve the precise docking between the cutter shaft and the cutter body structure, this application also provides a cutter shaft docking sleeve 07 at the end of the arc-shaped double-layer frame 02, and the cutter shaft docking sleeve 07 is placed directly below the cutter shaft docking interface 014. When the cutter shaft is inserted into the cutter shaft docking interface 014, the cutter shaft can be longitudinally positioned inside the limiting groove 075. At this time, with the precise correction of the cutter body structure, the precise docking between the cutter shaft and the cutter body structure can be achieved. When the blade shaft aligns with the head of the blade body 05 and the blade body 05 is removed from between the two clamping arms 042, the transparent door 017 can be pushed open laterally to achieve stable handling of the blade body 05.

[0035] Example 6 In another embodiment of the present invention, the U-shaped fuel injection pipe assembly includes a three-way pipe 08 that is laterally distributed on the housing 01 near the drive wheel assembly. The three-way pipe 08 has one horizontal end closed, and the other horizontal end passes through a mounting hole opened in the side wall of the housing 01 and is provided with a connecting end 081. It also includes a U-shaped pipe 082 that communicates with the vertical end of the three-way pipe 08. The nozzles 083 are equidistantly connected to the inner side of the U-shaped pipe 082.

[0036] like Figure 5 , 9 As shown in Figure 11, the connecting end 081, which is directly connected to the oil supply device, is connected to several nozzles 083 installed inside the U-shaped tube 082 through a three-way pipe 08. When several blade bodies 05 move to the first convex treatment area one by one, the U-shaped tube 082 is placed on the outer periphery of the blade body 05 in the first convex treatment area and sprays protective oil evenly to realize the protective operation of the blade structure.

[0037] In this invention, unless otherwise explicitly specified and limited, the terms “installation,” “connection,” “linking,” “fixing,” etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part. There are various ways to install detachably, such as by using a plug-in and snap-fit ​​method, or by using a bolt connection, etc.

[0038] The above embodiments, which describe the specific features of the present invention, are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-essential improvements and adjustments made to the present invention by those skilled in the art based on the above description of the invention shall fall within the scope of protection of the present invention.

Claims

1. A rotary tool magazine for a machining center with positioning function, characterized in that... ,include: Ear-shaped shell; A semi-circular rotary conveyor belt assembly is disposed within an ear-shaped housing. The semi-circular rotary conveyor belt assembly includes a drive wheel assembly and a driven wheel assembly; a continuous loop conveyor belt, which bypasses the drive wheel assembly and the driven wheel assembly and forms an upper and lower layered, semi-circular, intermittent rotary conveying path when driven by the drive wheel. And a number of assembly slot assemblies arranged in an array on the outer periphery of the loop conveyor belt, each assembly slot assembly is equipped with a corresponding tool holder adjustment frame and a tool body structure adapted to each tool holder adjustment frame, the number of tool body structures are assembled on the corresponding tool holder adjustment frame and arrayed on the outer periphery of the loop conveyor belt to form a dynamic tool magazine rotation structure, and the tool body structure is exposed at the outer end of the drive wheel assembly and the driven wheel assembly, respectively forming a first convex processing area and a second convex processing area; The ear-shaped housing has a cutter shaft interface (014) corresponding to the second outward convex processing area, which is used to insert the cutter shaft and selectively connect to several cutter body structures on the loop conveyor belt. The driven wheel assembly is also equipped with an ejection V-groove structure, which is used to trigger an ejection action in the second convex processing area when the loop conveyor belt stops, so as to push out the tool holder adjustment frame and guide and position it so that the tool body structure is precisely connected with the tool shaft. The lower part of the ear-shaped housing is provided with a U-shaped oil spray pipe assembly corresponding to the first outward convex treatment area, which can be used to spray oil around the outward convex blade structure to maintain the blade structure.

2. A rotary tool magazine for a machining center with positioning function according to claim 1, characterized in that: The ear-shaped housing includes an outer shell (01) and a cover (012), wherein one end of the outer shell (01) and the cover (012) are rotatably mounted by a hinge (011), and the other end is provided with a pin structure; The pin structure includes a plug ring (019) and an assembly ring (018) respectively fixed to the side walls of the outer shell (01) and the cover (012), a pin body (0120) disposed inside the assembly ring (018), one end of the pin body (0120) being able to be inserted into the plug ring (019), the other end of which is fixed with a lever (0121), and a third spring (0122) disposed on the outer periphery of the pin body (0120) between the lever (0121) and the assembly ring (018). It also includes a magnetic window door that is directly opposite the cutter shaft interface (014) and is located on the outer shell (01). The magnetic window door is located on the side of the second protruding processing area and is used to automatically open and close during the removal of the cutter shaft and the cutter body structure. The magnetic window door includes an opening slot that is opened on the side wall of the outer shell (01) and communicates with the cutter shaft interface (014). A pin (015) is provided on one side of the opening slot, a bushing (016) that is hinged to the pin (015), a first torsion spring that is provided between the bushing (016) and the pin (015), and a transparent door body (017) that is fixed to the bushing (016) and used for opening and closing the opening slot. A first magnetic sheet and a second magnetic sheet are respectively provided on the side of the transparent door body (017) away from the bushing (016) and the side of the opening slot away from the pin (015), and the first magnetic sheet and the second magnetic sheet are magnetically attracted to each other. A transparent observation window (013) is also fixed in the middle of the shell cover (012) to facilitate observation of the tool magazine rotation structure inside the ear-shaped shell.

3. A rotary tool magazine for a machining center with positioning function according to claim 2, characterized in that: The semi-circular rotary conveyor belt assembly also includes an arc-shaped double-layer frame (02), the driving wheel assembly and the driven wheel assembly are respectively assembled at both ends of the arc-shaped double-layer frame (02), and a number of limiting modules are provided at the edge of the arc-shaped double-layer frame (02); The loop conveyor belt includes a conveyor belt body (023), and the outer peripheral edge of the conveyor belt body (023) is provided with a contour strip (024). A plurality of limiting members (026) are arranged in the loop conveyor belt contour array on the arc-shaped double-layer frame (02) and are used to tension and limit the contour strip (024) to adjust the radial tension of the conveyor belt body (023). The limiting module includes side frames (025) arranged in a loop conveyor belt outline array on an arc-shaped double-layer frame (02), with each side frame (025) having a limiting element (026) rotatably mounted on its side.

4. A rotary tool magazine for a machining center with positioning function according to claim 3, characterized in that: The active wheel assembly includes an active wheel body (021), the active wheel body (021) has a tapered longitudinal section, and is rotatably assembled with one end of the arc-shaped double-layer frame (02) through a bearing seat, and an intermittent transmission disc mechanism is provided at the end of the arc-shaped double-layer frame (02) near the active wheel body (021) and connected to the active wheel body (021); The intermittent transmission disc mechanism includes a first mounting frame (06), a disc body (061) is rotatably mounted on the lower part of the vertical section of the first mounting frame (06), the disc body (061) is connected to the end of the drive wheel body (021), and a plurality of grooves (062) and a plurality of U-shaped grooves (063) are alternately opened on the outer periphery of the disc body (061). A horizontal shaft is rotatably mounted on the upper part of the first mounting bracket (06), wherein a first transmission wheel (067) is fixed at one end of the horizontal shaft, and a disc (064) is provided at the other end. The semi-circular wheel (065) and the pawl (066) respectively provided in the middle and on one side of the disc (064) can make transmission contact with the groove (062) and the U-shaped groove (063) respectively. It also includes a second mounting bracket (068) fixed to one end of the arc-shaped double-layer frame (02). The motor (069) provided on the side wall of the second mounting bracket (068) is fixed with a second transmission wheel (0611) through a coupling (0610). A transmission belt (0612) is sleeved between the second transmission wheel (0611) and the first transmission wheel (067). When the motor (069) is running, it is used to drive the active wheel (021) to rotate intermittently.

5. A rotary tool magazine for a machining center with positioning function according to claim 4, characterized in that: The driven wheel assembly includes a driven wheel body (022), which has the same structure as the driving wheel body (021) and is rotatably mounted on the other end of the arc-shaped double-layer frame (02), and a through groove (0221) annularly opened on the driven wheel body (022). The conveyor belt body (023) is provided with rectangular grooves (0231) arranged at equal intervals. The circumferential distance between two adjacent through grooves (0221) is a multiple of the distance between two adjacent rectangular grooves (0231).

6. A rotary tool magazine for a machining center with positioning function according to claim 5, characterized in that: Each of the assembly slots includes a rectangular frame (03) disposed on each of the rectangular slots (0231), the rectangular frame (03) being made of rubber; Each of the tool holder adjustment frames includes a deflection adjustment frame and a snap-fit ​​tool holder assembled with the deflection adjustment frame. The deflection adjustment frame includes end bushings (036) installed on both sides of the inner end of the rectangular frame (03) and a mounting shaft (031) rotatably connected to the two end bushings (036). Limiting end blocks (033) are fixed at both ends of the mounting shaft (031). The opposite ends of the two limiting end blocks (033) are connected to the two end bushings (036) with a second torsion spring (037). An adjusting support rod (032) is splined and horizontally movable in the middle of the mounting shaft (031). One side of the adjusting support rod (032) interacts with the ejection V-groove structure, and the other side is used for assembling the snap-fit ​​tool holder. The opposite ends of the two limiting end blocks (033) are connected to the two sides of the adjusting support rod (032) with two telescopic columns (034). Each telescopic column (034) is fitted with a first spring (035) on its outer periphery.

7. A rotary tool magazine for a machining center with positioning function according to claim 6, characterized in that: Each of the clamping tool holders includes a base (04) fixed to the side wall of the adjusting support rod (032). Both sides of the bottom of the base (04) are rotatably mounted with clamping arms (042) and clamping handles (043) via rotating shafts (041). The two clamping arms (042) are symmetrically distributed and form a covering clamping structure. A second spring (044) is connected between the two clamping handles (043) fixed to the two clamping arms (042) and a limiting plate (045) set at the center of the bottom of the base (04) for the outward expansion of the two clamping arms (042) in the initial state. The blade structure includes a blade body (05) and a stepped groove (051) fitted to the middle of the blade body (05), and the stepped groove (051) can be engaged between two clamping arms (042) and fitted thereto.

8. A rotary tool magazine for a machining center with positioning function according to claim 6, characterized in that: The ejection V-groove structure includes a support bar (072) internally disposed in the driven wheel body (022). One end of the support bar (072) extends through a through hole opened at the end of the driven wheel body (022) to the outside of the end of the driven wheel body (022) and is connected to an end fixing member (071). The end fixing member (071) is fixedly assembled on the arc-shaped double-layer frame (02). The support bar (072) is provided with a plurality of electric telescopic rods (073), a guide ejection member (074) fixed to the telescopic ends of the plurality of electric telescopic rods (073), and a guide V-shaped strip (075) connected to the side wall of the adjusting support rod (032). The guide V-shaped strip (075) can be adapted to contact the guide ejection member (074).

9. A rotary tool magazine for a machining center with positioning function according to claim 3, characterized in that: The arc-shaped double-layer frame (02) is also fixed with a cutter shaft docking sleeve (07) at one end near the driven wheel assembly. The cutter shaft docking sleeve (07) is placed in the second convex processing area and distributed directly below the cutter shaft docking interface (014). It has an open side near the magnetic door body and a limit groove (076) is opened longitudinally on the other side.

10. A rotary tool magazine for a machining center with positioning function according to claim 2, characterized in that: The U-shaped fuel injection pipe assembly includes a three-way pipe (08) that is laterally distributed on the outer casing (01) near the drive wheel assembly. The three-way pipe (08) has one horizontal end closed and the other horizontal end passes through a mounting hole opened in the side wall of the outer casing (01) and is provided with a connecting end (081). It also includes a U-shaped pipe (082) that communicates with the vertical end of the three-way pipe (08). The inner side of the U-shaped pipe (082) is equidistantly connected with nozzles (083).

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