A u-shaped tool magazine

Abstract

The utility model discloses a kind of U-shaped tool magazine, it is related to machine tool accessory technical field, including support platform and annular guide rail, annular guide rail is set on support platform, annular guide rail is equipped with annular chain and a pair of sprocket, one sprocket is connected first motor, annular chain is evenly provided with multiple limit posts at intervals, the side of sprocket is evenly provided with multiple limit grooves at intervals, the distance between the limit post is same with the distance between the limit groove, multiple clamps are evenly provided with on annular chain at intervals;When the motor drives one of the sprocket rotation, the limit post is one-to-one corresponding and clamped in the limit groove, and make annular chain transmission;The utility model effectively reduces the vibration and noise of tool magazine in tool changing process, also realizes the high-speed operation and high-precision positioning of tool magazine;Greatly improve the chain linear velocity, reduce the time of seeking tool, can effectively shorten the non-machining time of machine tool in tool changing process, improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of machine tool accessories technology, specifically a U-shaped tool magazine. Background Technology

[0002] Tool magazines are essential accessories for CNC machining centers. High-precision, high-performance, and high-reliability tool magazines are of great significance to CNC machine tools. Chain-type tool magazines are widely used in machining centers due to their large capacity.

[0003] Most existing chain-type tool magazines adopt the structure of sleeve roller chain and hollow roller chain. A certain number of tool sleeves are fixed on the chain by additional parts on the chain surface or hollow rollers. This structure has many additional parts and is complex. The motion accuracy cannot be guaranteed. In addition, it is limited by the chain drive motion mode and cannot achieve a high running linear speed. It also has defects such as large vibration, high noise and short life.

[0004] Existing chain tool magazines require multiple tool preparation actions such as tool retrieval, flipping, and translation before the robotic arm can change the tool. This not only results in a complex structure and high requirements for structural space, but also makes the tool changing process cumbersome, which greatly restricts the improvement of machine tool tool changing speed. In addition, due to the influence of the existing tool holder installation method and tool holder locking method, there is a risk of the tool holder being thrown out during the flipping movement of the tool feeding mechanism. Utility Model Content

[0005] This utility model discloses a U-shaped tool magazine to solve the technical problems of unreliable accuracy, high noise, and inconvenience in tool changing.

[0006] To solve the above-mentioned technical problems, the present invention proposes the following optimized technical solution: A U-shaped tool magazine includes a support platform and an annular guide rail. The annular guide rail is mounted on the support platform and has an annular chain and a pair of sprockets installed on it. One of the sprockets is connected to a first motor. The annular chain has a plurality of evenly spaced limiting posts, and the sides of the sprockets have a plurality of evenly spaced limiting grooves. The distance between the limiting posts is the same as the distance between the limiting grooves. The annular chain has a plurality of evenly spaced clamps. When the motor drives one of the sprockets to rotate, the limiting posts are engaged in the corresponding limiting grooves, thereby driving the annular chain.

[0007] Furthermore, the annular chain is formed by connecting multiple individual units, and the limiting post is disposed on the individual unit.

[0008] Furthermore, the clamps are respectively installed on the individual units.

[0009] Furthermore, one side of the unit is provided with a first sleeve and the other side is provided with a second sleeve, and the first sleeve and second sleeve of two adjacent units are fitted onto a connecting shaft.

[0010] Furthermore, the clamp has a U-shaped structure.

[0011] Furthermore, the distance between the two ends of the clamp is less than the width of the central receiving area.

[0012] Furthermore, it also includes a moving mechanism connected to the support platform for driving the support platform to move.

[0013] Furthermore, the moving mechanism includes a base frame, a second motor, and a lead screw. The second motor is connected to the base frame, the lead screw is connected to the output shaft of the second motor, and the support platform is connected to the lead screw via a lead screw seat.

[0014] Furthermore, the moving mechanism also includes a slide rail, and the support platform is connected to the slide rail via a slide block.

[0015] The present invention has the following advantages over the prior art: This invention employs a limiting groove on the sprocket and a limiting post on the ring chain to drive the ring chain, effectively reducing the vibration and noise of the tool magazine during tool changing, and also achieving high-speed operation and high-precision positioning of the tool magazine; it greatly increases the chain linear speed, reduces tool seeking time, and can effectively shorten the non-machining time of the machine tool during tool changing, thereby improving production efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the structure of the annular guide rail of this utility model.

[0018] Figure 3 yes Figure 2 Enlarged view of point A.

[0019] Figure 4 This is a schematic diagram of the structure of two individual units connected in this utility model.

[0020] Figure 5 This is a schematic diagram of the moving mechanism of this utility model.

[0021] In the diagram: 1. Support platform; 2. Circular guide rail; 3. Circular chain; 4. Sprocket; 5. Connecting shaft; 6. Limiting post; 7. Limiting groove; 8. Fixture; 9. Single unit; 10. First sleeve; 11. Second sleeve; 12. Moving mechanism; 13. Base frame; 14. Second motor; 15. Lead screw; 16. Slide rail; 17. Cutting tool. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] See Figures 1-5 A U-shaped tool magazine includes a support platform 1 and an annular guide rail 2. The annular guide rail 2 is mounted on the support platform 1. An annular chain 3 and a pair of sprockets 4 are mounted on the annular guide rail 2. One of the sprockets 4 is connected to a first motor. The annular chain 3 is provided with a plurality of limit posts 6 at even intervals. The side of the sprocket 4 is provided with a plurality of limit grooves 7 at even intervals. The distance between the limit posts 6 is the same as the distance between the limit grooves 7. The annular chain 3 is provided with a plurality of clamps 8 at even intervals. When the motor drives one of the sprockets 4 to rotate, the limit posts 6 are locked in the limit grooves 7 one by one, and the annular chain 3 is driven.

[0024] During operation, the motor starts to rotate one of the sprockets 4. Since the limiting posts 6 of the annular chain 3 are matched one-to-one with the limiting grooves 7 of the sprocket 4, this sprocket 4, together with the other sprocket 4, drives the annular chain 3, thereby enabling the clamp 8 on the sprocket 4, which is used to hold the tool 17, to perform tool changing. This transmission method of limiting posts 6 and limiting grooves 7 results in low noise and smoother transmission; since the limiting posts 6 are evenly spaced, tool changing is also more precise.

[0025] In this embodiment, the annular chain 3 is formed by connecting multiple individual units 9, and the limiting post 6 is disposed on each individual unit 9. The clamps 8 are disposed one-to-one on each individual unit 9. Each individual unit 9 has the same structure and is provided with a limiting post 6. During transmission, the clamps 8 disposed on the individual units 9 achieve higher precision when changing tools.

[0026] In this embodiment, a first sleeve 10 is provided on one side of the unit 9 and a second sleeve 11 is provided on the other side. The first sleeves 10 and second sleeves 11 of two adjacent units 9 are fitted onto a connecting shaft 5. This connection method is stable and has low noise.

[0027] In this embodiment, the clamp 8 has a U-shaped structure. The one-piece U-shaped clamp 8 allows the tool 17 to be directly inserted or removed from its opening, making it easy to replace the tool 17. Furthermore, the clamping force of the U-shaped clamp 8 is more stable.

[0028] In this embodiment, the distance between the two ends of the clamp 8 is less than the width of the central receiving area. When the tool 17 is placed in the clamp 8 and held in place, since the distance between the two ends of the clamp 8 is less than the width of the central receiving area, the two ends of the clamp 8 have the function of locking the tool 17 to prevent it from slipping out of the clamp 8.

[0029] In this embodiment, a moving mechanism 12 is also included. The moving mechanism 12 is connected to the support platform 1 and is used to drive the support platform 1 to move so that the tool 17 moves closer to or further away from the machining station.

[0030] In this embodiment, the moving mechanism 12 includes a base frame 13, a second motor 14, and a lead screw 15. The second motor 14 is connected to the base frame 13, and the lead screw 15 is connected to the output shaft of the second motor 14. The support platform 1 is connected to the lead screw 15 via a lead screw 15 seat. When it is necessary to adjust the distance between the tool 17 and the machining station, the second motor 14 is activated, and with the cooperation of the lead screw 15 and the lead screw 15 seat, the base frame 13 moves closer to or further away from the machining station.

[0031] In this embodiment, the moving mechanism 12 further includes a slide rail 16, and the support platform 1 is connected to the slide rail 16 via a sliding block. During the movement of the base frame 13, the slide rail 16 provides guidance and stability for the base frame 13.

[0032] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A U-shaped tool magazine, characterized in that, The device includes a support platform and an annular guide rail. The annular guide rail is mounted on the support platform and has an annular chain and a pair of sprockets installed on it. One of the sprockets is connected to a first motor. The annular chain has multiple evenly spaced limiting posts, and the sides of the sprockets have multiple evenly spaced limiting grooves. The distance between the limiting posts is the same as the distance between the limiting grooves. The annular chain has multiple evenly spaced clamps. When the motor drives one of the sprockets to rotate, the limiting posts are engaged in the corresponding limiting grooves, thus driving the annular chain.

2. A U-shaped tool magazine according to claim 1, characterized in that, The ring chain is formed by connecting multiple individual units, and the limiting post is disposed on the individual unit.

3. A U-shaped tool magazine according to claim 2, characterized in that, The clamps are each installed on the individual unit in a corresponding manner.

4. A U-shaped tool magazine according to claim 2, characterized in that, The single unit has a first sleeve on one side and a second sleeve on the other side, and the first sleeve and second sleeve of two adjacent single units are fitted onto a connecting shaft.

5. A U-shaped tool magazine according to claim 1, characterized in that, The clamp has a U-shaped structure.

6. A U-shaped tool magazine according to claim 4, characterized in that, The distance between the two ends of the clamp is less than the width of the central accommodating area.

7. A U-shaped tool magazine according to claim 1, characterized in that, It also includes a moving mechanism connected to the support platform for driving the support platform to move.

8. A U-shaped tool magazine according to claim 7, characterized in that, The moving mechanism includes a base frame, a second motor, and a lead screw. The second motor is connected to the base frame, and the lead screw is connected to the output shaft of the second motor. The support platform is connected to the lead screw through a lead screw seat.

9. A U-shaped tool magazine according to claim 7, characterized in that, The moving mechanism also includes a slide rail, and the support platform is connected to the slide rail via a slide block.

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