Quick clamping type tool changing arm of chain type tool magazine

Abstract

The utility model discloses a quick clamping type tool changing arm of chain type tool magazine belongs to numerical control machine tool technical field, a quick clamping type tool changing arm of chain type tool magazine, including support mechanism, the front end middle part fixed mounting of support mechanism has drive mechanism, the inside end swing mounting of support mechanism's front and back two sides has clamping mechanism, the clamping mechanism includes loading box, the inside end downside of loading box is installed with lower clamping arm, the inside end upside of loading box is installed with upper clamping arm, the inside of lower clamping arm and upper clamping arm all is provided with the protective pad, the terminal fixed connection of upper clamping arm has upper connecting arm, the terminal fixed connection of lower clamping arm has lower connecting groove, the upper end fixed connection of lower connecting groove has spring, and the lower end side of upper connecting arm is provided with the top rod, this quick clamping type tool changing arm of chain type tool magazine sets up spring and top rod and makes the flexible activity space when clamp clamping, has improved the protective nature of device.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool technology, and in particular to a fast clamping tool changing arm for a chain-type tool magazine. Background Technology

[0002] In automated machining processes, chain-type tool magazine systems play a crucial role in tool storage and changing. As an important component of horizontal machining centers and gantry machining centers on CNC machine tools, they replace traditional manual tool changing with computer-controlled automatic tool changing, significantly improving production efficiency. As machined workpieces become increasingly complex and precise, actual machining often requires the use of large-diameter, heavy tools. However, existing tool changing arms rely heavily on a single mechanical structure for clamping such tools. Because the torque generated when the tool is clamped is large, tool drop is highly likely, posing a safety hazard. Furthermore, when the tool changing stroke is long, the tool changing arm needs to be lengthened accordingly. In this case, the torque borne by the tool changing arm during the tool changing process may exceed the system's hydraulic pressure bearing capacity, causing the tool changing arm to tilt due to incomplete rotation, potentially leading to machining accidents. Furthermore, some traditional chain-type tool magazines employ an integrated swivel-type automatic tool changer. When the tool arm completes the tool retrieval, preparation, and exchange actions, it often requires a long translational distance or a large swivel, resulting in a lengthy tool exchange process. This leads to complex structures, large sizes, and long strokes in the moving parts of the tool changer, making it difficult to improve the tool change speed, especially when the spindle is far from the tool magazine. Simultaneously, some traditional tool changer arms have complex hydraulic circuit structures, increasing the overall complexity of the tool changer mechanism and resulting in low hydraulic efficiency. Therefore, the development of a fast-clamping tool changer arm is urgently needed. In the prior art, a quick-clamping tool changer arm for a chain-type tool magazine uses a clamp to hold the tool for easy replacement. However, in actual use, since both the clamp and the tool are made of smooth material, slippage or displacement can easily occur during the clamping process, causing tool change failure and affecting work efficiency. Therefore, we propose a quick-clamping tool changer arm for a chain-type tool magazine. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a quick clamping tool changing arm for a chain-type tool magazine. By setting a rubber pad on the inside of the clamp to increase friction, and by setting a spring and a push rod, the clamp has a flexible movement space when holding the tool, which facilitates relaxation work.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A quick-clamping tool changer arm for a chain-type tool magazine includes a support mechanism, a drive mechanism fixedly installed at the front center of the support mechanism, and clamping mechanisms movably installed at the inner ends of the front and rear sides of the support mechanism. The clamping mechanism includes a loading box, a lower clamping arm installed on the lower inner side of the loading box, and an upper clamping arm installed on the upper inner side of the loading box. Both the lower and upper clamping arms have protective pads on their inner sides. A housing is fixedly installed at the end of the loading box. An upper connecting arm is fixedly connected to the end of the upper clamping arm, and a lower connecting groove is fixedly connected to the end of the lower clamping arm. A spring is fixedly connected to the upper end of the lower connecting groove. A push rod is provided on the lower side of the upper connecting arm, and a cylinder is provided on the upper side of the upper connecting arm. A telescopic rod is connected to the lower end of the cylinder. By using the spring and push rod, the clamp has flexible movement space during clamping, facilitating relaxation work, while improving protection for the cutting tool, thus enhancing the convenience and safety of the device during use.

[0005] Furthermore, the driving mechanism includes a connecting plate, a fixed plate is connected to the middle of the outer end of the connecting plate, and a drive motor is installed on the front side of the inner end of the fixed plate. By setting the drive motor to provide kinetic energy to the tool, the support arm can be rotated by the drive motor to realize automatic tool changing, which improves the convenience of using the device.

[0006] Furthermore, the support mechanism includes a support arm, with an assembly groove provided in the middle of the inner end of the support arm. The assembly groove has mounting grooves on both the front and rear sides of its inner end. By providing the assembly groove, the connection part of the drive motor can pass through the support arm and be connected to the tool magazine for support, thereby improving the stability of the device during use.

[0007] Furthermore, the loading box is fixedly installed inside the mounting slot. By setting the loading box for assembling the clamps, the clamps can be easily connected tightly and can be easily assembled and installed on the inside of the support arm, which improves the convenience of using the device.

[0008] Furthermore, the connecting plate is fixedly installed at the middle of the outer end of the support arm.

[0009] Furthermore, the lower connecting groove has a hollow structure, and the upper connecting arm is nested inside the lower connecting groove.

[0010] Furthermore, the spring corresponds to the position of the push rod, and the spring can be nested inside the push rod.

[0011] Furthermore, there are two upper clamping arms and two lower clamping arms, which are movably installed on the inner sides of the front and rear ends of the support arm.

[0012] Furthermore, the pad is made of rubber and is arc-shaped to fit the upper and lower clamping arms.

[0013] In summary, this utility model has the following beneficial effects: 1. By incorporating springs and push rods, the clamping device offers flexible movement space, facilitating slack-off operations while enhancing tool protection. This improves the ease of use and safety of the device. Furthermore, the drive motor provides kinetic energy to the tool, and the support arm can rotate via the drive motor to achieve automatic tool changing, further enhancing the ease of use of the device.

[0014] 2. By setting an assembly slot, the connection part of the drive motor can pass through the support arm and connect to the tool magazine for support, which improves the stability of the device during use. By setting a loading box for assembling fixtures, the fixtures can be tightly connected and easily assembled and installed on the inside of the support arm, which improves the convenience of the device during use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure in this embodiment; Figure 2 This is a three-dimensional structural diagram of the support mechanism in this embodiment; Figure 3 This is a three-dimensional structural diagram of the drive mechanism in this embodiment; Figure 4 This is a three-dimensional structural diagram of the clamping mechanism in this embodiment; Figure 5 This is a three-dimensional structural diagram of the disassembled clamping mechanism in this embodiment.

[0016] In the diagram, 1 is the support mechanism; 101 is the support arm; 102 is the assembly slot; 103 is the mounting slot; 2 is the drive mechanism; 201 is the connecting plate; 202 is the fixing plate; 203 is the drive motor; 3 is the clamping mechanism; 301 is the loading box; 302 is the lower clamping arm; 303 is the upper clamping arm; 304 is the protective pad; 305 is the outer shell; 306 is the upper connecting arm; 307 is the lower connecting slot; 308 is the spring; 309 is the push rod; 310 is the cylinder; and 311 is the telescopic rod. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings.

[0018] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific part, respectively.

[0019] Reference Figure 1-5As shown, a fast clamping tool changing arm for a chain-type tool magazine is provided in a preferred embodiment of the present invention. It includes a support mechanism 1, a drive mechanism 2 fixedly installed at the front center of the support mechanism 1, and clamping mechanisms 3 movably installed at the inner ends of the front and rear sides of the support mechanism 1. The clamping mechanism 3 includes a loading box 301. A lower clamping arm 302 is installed on the lower inner side of the loading box 301, and an upper clamping arm 303 is installed on the upper inner side of the loading box 301. Protective pads 304 are provided on the inner sides of both the lower clamping arm 302 and the upper clamping arm 303. A housing 305 is fixedly installed at the end of the loading box 301. An upper connecting arm 306 is fixedly connected to the end of the upper clamping arm 303, and a lower connecting groove 307 is fixedly connected to the end of the lower clamping arm 302. A spring 308 is fixedly connected to the upper end of the 07. A push rod 309 is provided on the lower side of the upper connecting arm 306. A cylinder 310 is provided on the upper side of the upper connecting arm 306. A telescopic rod 311 is connected to the lower end of the cylinder 310. The lower connecting groove 307 has a hollow structure. The upper connecting arm 306 is nested in the inner end of the lower connecting groove 307. By setting the lower connecting groove 307 to a hollow structure, the upper connecting arm 306 is nested in the lower connecting groove 307, so that the upper clamping arm 303 and the lower clamping arm... The 302 components can be combined to form a clamp, making the clamping of the tool more stable and improving the stability of the device during use. The spring 308 corresponds to the position of the push rod 309, and the spring 308 can be nested inside the push rod 309. There are two upper clamping arms 303 and two lower clamping arms 302, which are movably installed on the inner sides of the front and rear ends of the support arm 101. The protective pad 304 is made of rubber and is arc-shaped to match the upper clamping arms 303 and lower clamping arms 302. By setting the protective pad 304 to be made of rubber and arc-shaped to match the upper clamping arms 303 and lower clamping arms 302, the friction between the clamp and the tool is increased and a buffer is provided, which improves the stability and protection of the device during use. By setting the spring 308 and the push rod 309, the clamp has a flexible movement space when clamping, which facilitates the relaxation work, while improving the protection of the tool and improving the convenience and protection of the device during use.

[0020] Reference Figure 1-3 As shown, the drive mechanism 2 includes a connecting plate 201, a fixing plate 202 is connected to the middle of the outer end of the connecting plate 201, and a drive motor 203 is installed on the front side of the inner end of the fixing plate 202. The connecting plate 201 is fixedly installed in the middle of the outer end of the support arm 101. By setting the drive motor 203 to provide kinetic energy to the tool, the support arm 101 can be rotated by the drive motor 203 to realize automatic tool changing, which improves the convenience of using the device.

[0021] Reference Figure 1-2As shown, the support mechanism 1 includes a support arm 101. An assembly groove 102 is provided in the middle of the inner end of the support arm 101. Mounting grooves 103 are provided on the front and rear sides of the inner end of the assembly groove 102. By providing the assembly groove 102, the connection part of the drive motor 203 can pass through the support arm 101 and be connected to the tool magazine for support, thereby improving the stability of the device during use.

[0022] Reference Figure 2-5 As shown, the loading box 301 is fixedly installed inside the mounting slot 103. By setting the loading box 301 for assembling the clamp, the clamp can be easily connected tightly and can be easily assembled and installed on the inside of the support arm 101, which improves the convenience of using the device.

[0023] Specific implementation process: The support arm 101 provides rigid support for the overall structure. The mounting groove 102 on its inner side is used for the connection part of the drive motor 203 to pass through and connect with the tool magazine body to ensure the stable fixation of the tool changing arm and the tool magazine. The mounting grooves 103 on the front and rear sides are used to fix the loading box 301, so that the clamping components are tightly assembled on the inner side of the support arm 101 to ensure the structural stability during the tool changing process. The drive motor 203 is fixed to the middle of the front end of the support arm 101 through the connecting plate 201 and the fixing plate 202. The core component, the drive motor 203, provides rotational power for the tool changing arm. When a tool change is required, the drive motor 203 drives the support arm 101 and the clamps on both sides to rotate as a whole, realizing the movement from the "tool to be picked up position" to the "target installation position", completing the tool change position switch. The clamps are the core of realizing "quick clamping" and "stable tool holding". Its working logic is based on mechanical structure cooperation and elastic buffer design. The upper clamping arm 303 and the lower clamping arm 302 in the loading box 301 are linked by the structure of the upper connecting arm 306 nested in the lower connecting groove 307. When the cylinder 310 is started, the telescopic rod 311 pushes the upper connecting arm 306 downward, causing the upper clamping arm 303 to rotate inward, cooperating with the lower clamping arm 302 to clamp the tool. When the cylinder 310 is reset, the upper connecting arm 306 is in the spring 308. Under the action of elastic force, the spring 308 is nested inside the push rod 309 and provides the reset power through elastic deformation, which drives the upper clamping arm 303 to open outward, realizing the release of the tool. The pads 304 on the inner side of the upper clamping arm 303 and the lower clamping arm 302 are made of rubber and are arc-shaped to fit the clamping arms. This increases the friction with the tool surface to prevent slippage and also buffers the clamping force through the elastic deformation of the rubber to avoid damage to the tool surface. The cooperation between the spring 308 and the push rod 309 provides flexible movement space for the clamping process. When clamping, the spring 308 is compressed, which can offset the impact force of excessive clamping. When releasing, the elastic force of the spring 308 assists the upper clamping arm 303 to quickly reset, which facilitates the efficient completion of the "release-clamp" action and reduces mechanical wear.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A quick-clamping tool changer arm for a chain-type tool magazine, characterized in that: It includes a support mechanism (1), a drive mechanism (2) is fixedly installed at the front middle of the support mechanism (1), and a clamping mechanism (3) is movably installed at the inner ends of the front and rear sides of the support mechanism (1). The clamping mechanism (3) includes a loading box (301), a lower clamping arm (302) is installed on the lower inner side of the loading box (301), an upper clamping arm (303) is installed on the upper inner side of the loading box (301), and a protective pad (304) is provided on the inner side of both the lower clamping arm (302) and the upper clamping arm (303). A shell (305) is fixedly provided at the end of the loading box (301), an upper connecting arm (306) is fixedly connected to the end of the upper clamping arm (303), a lower connecting groove (307) is fixedly connected to the end of the lower clamping arm (302), a spring (308) is fixedly connected to the upper end of the lower connecting groove (307), a push rod (309) is provided on the lower side of the upper connecting arm (306), a cylinder (310) is provided on the upper side of the upper connecting arm (306), and a telescopic rod (311) is connected to the lower end of the cylinder (310).

2. The quick-clamping tool changing arm of the chain-type tool magazine according to claim 1, characterized in that: The drive mechanism (2) includes a connecting plate (201), a fixing plate (202) is connected to the middle of the outer end of the connecting plate (201), and a drive motor (203) is installed on the front side of the inner end of the fixing plate (202).

3. The quick-clamping tool changing arm of the chain-type tool magazine according to claim 2, characterized in that: The support mechanism (1) includes a support arm (101), an assembly groove (102) is provided at the middle of the inner end of the support arm (101), and mounting grooves (103) are provided on the front and rear sides of the inner end of the assembly groove (102).

4. The quick-clamping tool changing arm of the chain-type tool magazine according to claim 3, characterized in that: The loading box (301) is fixedly installed inside the mounting slot (103).

5. The quick-clamping tool changing arm of a chain-type tool magazine according to claim 2, characterized in that: The connecting plate (201) is fixedly installed at the middle of the outer end of the support arm (101).

6. The quick-clamping tool changing arm of the chain-type tool magazine according to claim 1, characterized in that: The lower connecting groove (307) has a hollow structure, and the upper connecting arm (306) is nested inside the lower connecting groove (307).

7. The quick-clamping tool changing arm of a chain-type tool magazine according to claim 1, characterized in that: The spring (308) is positioned corresponding to the top rod (309), and the spring (308) can be nested inside the top rod (309).

8. The quick-clamping tool changing arm of the chain-type tool magazine according to claim 3, characterized in that: The number of the upper clamping arm (303) and the lower clamping arm (302) are both two, and the two upper clamping arms (303) and the lower clamping arm (302) are movably installed on the inner sides of the front and rear ends of the support arm (101).

9. The quick-clamping tool changing arm of a chain-type tool magazine according to claim 1, characterized in that: The pad (304) is made of rubber and is arc-shaped to fit the upper clamping arm (303) and the lower clamping arm (302).

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