Chain type handless flat broaching magazine mechanism

Abstract

The utility model discloses a kind of chain type handless flat push broach magazine mechanism, including chain drive assembly, dome subassembly and base subassembly, chain drive assembly includes chain assembly, driving wheel subassembly and driven wheel subassembly, chain assembly includes chain and several dog components, driving wheel subassembly includes driving wheel, driving wheel shaft, bearing seat subassembly, speed reducer and servo motor, speed reducer is fixed in bearing seat subassembly, driven wheel subassembly includes driven wheel and driven wheel shaft, driving wheel and driven wheel are connected with chain respectively, dome subassembly includes dome support and the guide rail subassembly and sensor installed on dome support, base subassembly includes broach magazine base and the drag chain, cylinder and pneumatic solenoid valve installed on broach magazine base.The structure of the broach magazine mechanism is simple, high efficiency, strong safety, cancels the mechanical hand transmission mode of traditional broach magazine, makes entire tool changing action more efficient, accurate, concise, can greatly reduce the production cost, assembly cost and use of entire tool changing system.

Description

Technical Field

[0001] This utility model relates to a machine tool magazine structure, specifically a chain-type handless flat-push tool magazine mechanism. Background Technology

[0002] In the automated machining process of high-precision production lines, chain-type handless flat-push tool magazines are devices that provide tool storage and tool changing functions. In recent years, tool magazines have become functional components of equal importance to machine tool parts such as spindles and rotary tables, and have even surpassed their role as machine tool accessories. The stability, positioning accuracy, and tool changing speed of chain-type handless flat-push tool magazines are sufficient to affect the machining efficiency of machine tools.

[0003] Due to limitations in the tool changer location and space, the machine tool spindle and the tool storage location are usually quite far apart. Traditional integrated automatic tool changers often require a robotic arm for secondary transport, transferring and inserting tools. The robotic arm has a complex structure and cumbersome movements, which prolongs tool change time and significantly impacts machining efficiency. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a chain-type handless flat-push tool magazine mechanism that is simple in structure, highly efficient and safe, which can significantly reduce the production cost, assembly cost and usage cost of the entire tool changing system, in order to address the shortcomings of the existing technology.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a chain-type handless flat-push tool magazine mechanism, including a chain drive assembly, a dome assembly, and a base assembly. The chain drive assembly includes a chain assembly, a drive wheel assembly, and a driven wheel assembly. The chain assembly includes a chain and several pawl assemblies. Several platforms are mounted on the chain, and a set of pawl assemblies is mounted on each platform. Each set of pawl assemblies is used to mount one tool. The drive wheel assembly includes a drive wheel, a drive wheel shaft, a bearing housing assembly, a reducer, and a servo motor. The reducer is fixed to the bearing housing assembly. The output end of the servo motor is connected to the input end of the reducer. The output end of the reducer is connected to the drive wheel shaft, and the drive wheel shaft is connected to the drive wheel. The driven wheel assembly includes a driven wheel and a driven wheel shaft, and the driven wheel shaft is connected to the driven wheel. The driven wheel is connected to the driven wheel, and the driven wheel shaft is fixed to the mounting plate. The driving wheel and the driven wheel are respectively connected to the chain. The dome assembly includes a dome bracket and a guide rail assembly and a sensor mounted on the dome bracket. The guide rail assembly is an ellipse formed by splicing arc guide rails and straight guide rails. The guide rail assembly is provided with wear-resistant pads in the circumferential direction. The chain is supported by the wear-resistant pads. The sensor is close to the tool change point and is used to detect the tool's position at the tool change point. The base assembly includes a tool magazine base and a drag chain, a cylinder, and a pneumatic solenoid valve mounted on the tool magazine base. The two ends of the drag chain are respectively fixed to the tool magazine base and the dome bracket. The pneumatic solenoid valve is used to control the air pressure of the cylinder. The dome bracket is slidably connected to the tool magazine base. The bearing seat assembly, the mounting plate, and the piston rod of the cylinder are respectively fixed to the dome bracket.

[0006] The working principle of this chain-type handless flat-push tool magazine mechanism is as follows: When the tool magazine is preparing tools, the machine tool control system sends a command to the servo motor, which then drives the drive wheel shaft to rotate via a reducer. The drive wheel shaft drives the drive wheel to rotate, which in turn drives the chain to rotate. The chain then drives the driven wheel and the target tool to rotate until the target tool reaches the preparation position. When the spindle is changing tools, the machine tool control system sends a command to the pneumatic solenoid valve, causing the piston rod of the cylinder to extend. This moves the flat-push dome assembly and the chain drive assembly forward as a whole, with the drag chain moving along with the dome support. The spindle extends until the dome assembly approaches the front end of the spindle. At this point, the spindle begins to return the old tool. After the old tool on the spindle is returned to the tool gripper assembly, the machine tool control system sends a command to the servo motor. The servo motor operates, driving the chain to rotate until the new tool rotates to the tool change point. At this point, the spindle begins to pull out the new tool. After the spindle completes the tool pulling action, the machine tool control system sends a command to the pneumatic solenoid valve. The piston rod of the cylinder retracts, driving the dome assembly and chain drive assembly to move back to their original positions. At the same time, the cable chain moves back to its original position along with the dome support. At this point, the tool change process ends.

[0007] Preferably, the tool magazine base is equipped with two limiting brackets, which are used to limit the stroke of the piston rod, further improving the safety of the tool changing action and preventing the piston rod from moving beyond its stroke.

[0008] Preferably, a cylinder connecting seat is fixed to the bottom of the dome bracket, and the piston rod is connected to the cylinder connecting seat.

[0009] Preferably, a number of sliders are fixed on the tool magazine base. The sliders are arranged in two rows, front and back. A slide rail is slidably connected to each row of sliders. Each slide rail is arranged in parallel with the piston rod. The two slide rails are respectively fixedly connected to the bottom of the dome bracket.

[0010] Compared with the prior art, this utility model has the following advantages: The chain-type handless flat-push tool magazine mechanism of this utility model has a simple structure, high efficiency, and strong safety. This tool magazine mechanism eliminates the traditional tool magazine's robotic arm transmission mode and uses the spindle to directly grab the tool in the tool magazine, simplifying the spindle tool changing process. A cylinder is used to push the dome assembly and chain drive assembly to move back and forth as a whole, and a servo motor is used to precisely control the rotation position of the tool. The control is precise, the structure is simple, and the speed is fast. Combined with the existing up, down, left and right movement of the spindle, it can achieve rapid tool changing, reducing unnecessary movement of the entire tool changing system, making the entire tool changing action more efficient, precise, and simple, which can significantly reduce the production cost, assembly cost, and usage cost of the entire tool changing system. Attached Figure Description

[0011] Figure 1 This is an external view of the chain-type handless flat-push tool magazine mechanism in the embodiment;

[0012] Figure 2 The front view of the chain-type handless push-pull tool magazine mechanism in the embodiment is shown with the piston rod of the cylinder retracted.

[0013] Figure 3 The front view of the chain-type handless push-pull tool magazine mechanism in the embodiment is shown with the piston rod of the cylinder extended.

[0014] Figure 4 This is an external view of the chain drive component in the embodiment;

[0015] Figure 5 This is an external view of the dome assembly in the embodiment;

[0016] Figure 6 This is a top view of the base assembly in the embodiment;

[0017] Figure 7 This is an external view of the drive wheel assembly in the embodiment;

[0018] Figure 8 This is an external view of the driven wheel assembly in the embodiment;

[0019] The specific reference numerals in the figure are as follows:

[0020] 11-Chain, 12-Claw assembly, 13-Platform, 21-Drive wheel, 22-Drive wheel shaft, 23-Bearing housing assembly, 24-Reducer, 25-Servo motor, 31-Driven wheel, 32-Driven wheel shaft, 33-Mounting plate, 41-Dome bracket, 42-Sensor, 43-Circular arc guide rail, 44-Straight guide rail, 45-Cylinder connecting seat, 51-Cutter magazine base, 52-Drag chain, 53-Cylinder, 54-Pneumatic solenoid valve, 55-Limit bracket, 56-Slider, 57-Slide rail. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Devices, components, or structures not limited in this invention all employ conventional techniques in the art.

[0022] The chain-type handless flat-push tool magazine mechanism in the embodiment, such as Figures 1 to 8As shown, the system includes a chain drive assembly, a dome assembly, and a base assembly. The chain drive assembly includes a chain assembly, a drive wheel assembly, and a driven wheel assembly. The chain assembly includes a chain 11 and several pawl assemblies 12. Several platforms 13 are mounted on the chain 11, and each platform 13 is equipped with a set of pawl assemblies 12. Each set of pawl assemblies 12 is used to mount one cutting tool. The drive wheel assembly includes a drive wheel 21, a drive wheel shaft 22, a bearing housing assembly 23, a reducer 24, and a servo motor 25. The reducer 24 is fixed to the bearing housing assembly 23. The output end of the servo motor 25 is connected to the input end of the reducer 24, and the output end of the reducer 24 is connected to the drive wheel shaft 22. The drive wheel shaft 22 is connected to the drive wheel 21. The driven wheel assembly includes a driven wheel 31 and a driven wheel shaft 32. The driven wheel shaft 32 is connected to the driven wheel 31 and is fixed to a mounting plate 33. The drive wheel 21 and the driven wheel 31 are respectively connected to the chain 11. The dome assembly includes a dome. The bracket 41 includes a guide rail assembly and a sensor 42 mounted on the dome bracket 41. The guide rail assembly is an ellipse formed by splicing an arc guide rail 43 and a straight guide rail 44. The guide rail assembly is provided with wear-resistant pads in the circumferential direction. The chain 11 is supported by the wear-resistant pads. The sensor 42 is close to the tool change point and is used to detect the tool's position at the tool change point. The base assembly includes a tool magazine base 51 and a drag chain 52, a cylinder 53, and a pneumatic solenoid valve 54 mounted on the tool magazine base 51. The two ends of the drag chain 52 are fixed to the tool magazine base 51 and the dome bracket 41, respectively. The pneumatic solenoid valve 54 is used to control the air pressure of the cylinder 53. The dome bracket 41 is slidably connected to the tool magazine base 51. The bearing seat assembly 23 and the mounting plate 33 are fixed to the dome bracket 41, respectively. A cylinder connecting seat 45 is fixed to the bottom of the dome bracket 41. The piston rod is connected to the cylinder connecting seat 45. Two limit brackets 55 are installed on the tool magazine base 51 to limit the stroke of the piston rod.

[0023] In this embodiment, a number of sliders 56 are fixed on the tool magazine base 51. The sliders 56 are arranged in two rows, front and back. A slide rail 57 is slidably connected to each row of sliders 56. Each slide rail 57 is arranged in parallel with the piston rod. The two slide rails 57 are respectively fixedly connected to the bottom of the dome bracket 41.

[0024] When the tool magazine is preparing tools, the machine tool control system sends a command to the servo motor 25, which operates and drives the drive wheel shaft 22 to rotate via the reducer 24. The drive wheel shaft 22 drives the drive wheel 21 to rotate, which in turn drives the chain 11 to rotate. The chain 11 then drives the driven wheel 31 and the target tool to rotate until the target tool reaches the tool preparation position. When the spindle is changing tools, the machine tool control system sends a command to the pneumatic solenoid valve 54, causing the piston rod of the cylinder 53 to extend and move the dome assembly and chain drive assembly forward as a whole (e.g., ...). Figure 3As shown), the cable chain 52 moves and extends along with the dome support 41 until the dome assembly approaches the front end of the spindle. At this time, the spindle begins to return the old tool. After the old tool on the spindle is returned to the tool gripper assembly 12, the machine tool control system sends a command to the servo motor 25. The servo motor 25 operates, driving the chain 11 to rotate until the new tool rotates to the tool change point. At this time, the spindle begins to pull out the new tool. After the spindle completes the tool pulling action, the machine tool control system sends a command to the pneumatic solenoid valve 54, and the piston rod of the cylinder 53 retracts (as shown). Figure 2 As shown, the dome assembly and chain drive assembly move backward to their original positions, and the drag chain 52 moves back to its original position along with the dome support 41. At this point, the tool changing process ends.

[0025] The aforementioned tool magazine mechanism eliminates the traditional robotic arm transfer mode of tool magazines, and instead uses the spindle to directly grab tools from the tool magazine, simplifying the spindle tool changing process. It uses cylinder 53 and servo motor 25 in conjunction with the existing up, down, left and right movement of the spindle to achieve rapid tool changing, reducing unnecessary movement of the entire tool changing system, making the entire tool changing action more efficient, precise and simple, and significantly reducing the production cost, assembly cost and usage cost of the entire tool changing system.

Claims

1. A chain-type handless flat-push tool magazine mechanism, characterized in that, The system includes a chain drive assembly, a dome assembly, and a base assembly. The chain drive assembly comprises a chain assembly, a drive wheel assembly, and a driven wheel assembly. The chain assembly includes a chain and several pawl assemblies. Several platforms are mounted on the chain, and each platform is equipped with a set of pawl assemblies. Each set of pawl assemblies is used to mount one cutting tool. The drive wheel assembly includes a drive wheel, a drive wheel shaft, a bearing housing assembly, a reducer, and a servo motor. The reducer is fixed to the bearing housing assembly. The output end of the servo motor is connected to the input end of the reducer, and the output end of the reducer is connected to the drive wheel shaft. The drive wheel shaft is connected to the drive wheel. The driven wheel assembly includes a driven wheel and a driven wheel shaft. The driven wheel shaft is connected to the driven wheel and is fixed to a mounting plate. The drive wheel and the driven wheel are respectively connected to the chain. The dome assembly includes a dome bracket and a guide rail assembly and a sensor mounted on the dome bracket. The guide rail assembly is an ellipse formed by splicing arc guide rails and straight guide rails. The guide rail assembly is provided with wear-resistant pads in the circumferential direction. The chain is supported by the wear-resistant pads. The sensor is close to the tool change point and is used to detect the tool's position at the tool change point. The base assembly includes a tool magazine base and a drag chain, a cylinder, and a pneumatic solenoid valve mounted on the tool magazine base. The two ends of the drag chain are respectively fixed to the tool magazine base and the dome bracket. The pneumatic solenoid valve is used to control the air pressure of the cylinder. The dome bracket is slidably connected to the tool magazine base. The bearing seat assembly, the mounting plate, and the piston rod of the cylinder are respectively fixed to the dome bracket.

2. The chain-type handless flat-push tool magazine mechanism according to claim 1, characterized in that, Two limiting brackets are installed on the tool magazine base, and the two limiting brackets are used to limit the stroke of the piston rod.

3. The chain-type handless flat-push tool magazine mechanism according to claim 1, characterized in that, A cylinder connecting seat is fixed to the bottom of the dome bracket, and the piston rod is connected to the cylinder connecting seat.

4. The chain-type handless flat-push tool magazine mechanism according to claim 1, characterized in that, The tool magazine base is fixed with several sliders arranged in two rows, front and back. Each row of sliders is slidably connected to a slide rail. Each slide rail is arranged parallel to the piston rod, and the two slide rails are respectively fixedly connected to the bottom of the dome bracket.

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