Tool changing arm with double locking tools

Abstract

The utility model belongs to the technical field of tool magazines, and relates to a double-tool-locking tool changing arm which comprises a cam box, an output shaft driven by the cam box and capable of rotating in a telescopic mode and a tool arm set connected to the tail end of the output shaft, the tool arm set comprises a tool arm body, and tool buckling claws used for grabbing tools are arranged at the two tail ends of the tool arm body. A cutter buckling groove is formed in the cutter buckling claw, a cutter ejecting rod is arranged on the side, close to the cutter arm body, in the cutter buckling groove in a floating mode, and a safety ejecting pin which is matched with the cutter ejecting rod, driven through elastic force of a spring and used for keeping the cutter ejecting rod in the extending state is arranged in the cutter arm body. The top end of the safety lifting pin extends out of the upper end face of the tool changing arm body, a positioning key is arranged on one side of the tool buckling groove, a positioning groove matched with the positioning key is formed in the tool, double locking of the tool can be achieved through the positioning key and the tool jacking rod, the tool changing stability is greatly improved, the tool taking precision is guaranteed, and the tool changing efficiency is improved. And the tool changing efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of tool magazine, especially a double-lock tool changing arm. BACKGROUND

[0002] Due to the rapid development of the mechanical industry, product processing is also more and more precise, so that each product needs different models and various tool forms to meet the processing requirements, and a tool changing system that can quickly and stably change tools becomes a necessary requirement in the future, which can greatly improve the processing efficiency of products. Patent No. 202320145202.X discloses a chain tool magazine tool changing arm, which comprises a tool changing arm body, a top tool column and a tool clamping jaw. The top tool column is movably installed in the tool changing arm body. A locking plug plate is fixedly installed on the end face of the top tool column. An inner clamping plate is fixedly installed on the outer wall of the end of the top tool column. The inner clamping plate is attached to the inner wall of the outer sleeve clamping plate. A locking bolt is threaded through the side of the outer sleeve clamping plate. The end of the locking bolt is threadedly connected with the locking hole. An installation sliding groove is formed in the end of the tool changing arm body. The inner wall of the installation sliding groove is attached to the end of the tool clamping jaw. A side fixing strip is welded to the end of the tool clamping jaw. The chain tool magazine tool changing arm adopts a novel structure design, which can conveniently replace and stably fix the end of the tool clamping jaw and the top tool column, so that the tool changing arm can stably fix tools of different specifications, ensure the stability of the tools during storage and retrieval, and improve the overall applicability of the tool changing arm. However, the tool clamping jaw lacks effective positioning when grabbing the tool. During the rotation and upward and downward insertion of the tool, the position accuracy is deviated, which may cause unnecessary loss. Therefore, the utility model provides a double-lock tool changing arm. SUMMARY

[0003] The main purpose of the utility model is to provide a double-lock tool changing arm. The fixed tool clamping jaw and the positioning key are designed to tightly clamp the abutting surface and the positioning groove on the tool, thereby realizing the locking function of the first section on the tool. The safety top pin cooperates with the top tool rod to resist the side surface of the tool, thereby realizing the locking function of the second section on the tool. The stability of tool changing is greatly improved, and the tool changing efficiency is improved.

[0004] The utility model discloses a double lock sword change sword arm, including cam box, the telescopic rotation of the power output shaft of being driven by the cam box and the sword arm group being connected in the end of power output shaft, the sword arm group includes sword arm body, be equipped with the buckle sword claw for grabbing the tool on two ends of sword arm body, be equipped with buckle sword groove on the buckle sword claw, the side of buckle sword groove near sword arm body can float and be equipped with the top sword bar, be equipped with the safety jack pin for maintaining the top sword bar and being driven by spring elastic force and being used for maintaining the top sword bar to keep the state of keeping out in top sword bar in sword arm body, the top end of safety jack pin projects the upper end surface of sword arm body, one side of buckle sword groove is equipped with the positioning key, be equipped with the positioning groove with positioning key matching on the tool.

[0005] Preferably, the number of the top sword bar and the safety jack pin is two and symmetrically arranged in the sword arm body.

[0006] Preferably, a first receiving cavity is arranged in the sword arm body along the length direction, the top sword bar is located in the first receiving cavity, the top sword bar adopts sectional design, the large diameter end of the top sword bar is close to the buckle sword claw, a spring is sleeved on the small diameter section of the top sword bar, the two ends of the spring are connected on the end face of the large diameter end of the top sword bar and the inner wall of the first receiving cavity respectively, and the spring is in the state of stretching.

[0007] Preferably, a second receiving cavity is arranged in the sword arm body along the thickness direction, a jack cover plate is connected to the lower end face of the sword arm body, a third receiving cavity is arranged on the jack cover plate and communicated with the second receiving cavity, the safety jack pin is located in the jack receiving cavity formed by the second receiving cavity and the third receiving cavity, a top rod is connected to the top end of the safety jack pin, the top rod penetrates through the upper end face of the sword arm body, a jack spring is connected to the bottom end of the safety jack pin, the jack spring is in the state of compression, the small diameter end of the top sword bar penetrates into the second receiving cavity, and the top of the side of the safety jack pin close to the top sword bar is arranged as an inclined surface, and the end part of the top sword bar abuts against the inclined surface.

[0008] The utility model discloses the beneficial effect of technical scheme is: through the design fixed buckle sword claw and positioning key clamping the side and positioning groove on the tool, then realize the locking function of first section to tool, and then realize the locking function of second section to tool through the safety jack pin cooperation top sword bar and resist the side of tool, greatly improve the stability of changing sword, improve the sword changing efficiency, the top sword bar is cooperated with the safety jack pin under the spring elasticity and can maintain the state of toping out, need not provide additional hydraulic or pneumatic mechanism, simple structure, and the cost is lower. ACCURACY OF DRAWINGS

[0009] Fig. 1 It is the layout of example double lock sword change sword arm when working.

[0010] Fig. 2 This is a schematic diagram of the blade claw structure.

[0011] Fig. 3 This is a schematic diagram of the cutter arm body structure.

[0012] Fig. 4 This is a schematic diagram of the cutting tool structure.

[0013] The numbers in the image represent:

[0014] 1. Cam box; 2. Output shaft; 3. Tool arm body; 4. Clamping ring cover; 5. Tool catcher; 6. Tool catcher groove; 7. Top tool rod; 8. Guide slope; 9. Safety top pin; 10. Positioning key; 11. Positioning groove; 12. Supporting surface; 13. First storage cavity; 14. Slide groove; 15. Slider; 16. Spring; 17. Second storage cavity; 18. Top pin cover plate; 19. Third storage cavity; 20. Top rod; 21. Slope; 22. Top pin spring. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to specific embodiments.

[0016] Example:

[0017] like Figs. 1 to 4 As shown, this utility model discloses a double-locking knife changing arm, comprising a cam box 1, a telescopic and rotatable output shaft 2 driven by the cam box 1, and a knife arm assembly connected to the end of the output shaft 2. The knife arm assembly includes a knife arm body 3, which is pressed and locked to the bottom of the output shaft 2 of the cam box 1 by a clamping ring cover 4. The two ends of the knife arm body 3 are provided with knife-holding claws 5 for gripping the knife. Each knife-holding claw 5 has a knife-holding groove 6, and a top knife rod 7 is buoyantly mounted in the knife-holding groove 6 near the side of the knife arm body 3. The top of the top knife rod 7 is provided with a guide slope 8 on the side away from the knife retaining groove 6. The knife arm body 3 is provided with a safety top pin 9 that cooperates with the top knife rod 7 and is driven by the elastic force of the spring 16 to keep the top knife rod 7 in the extended state. The top of the safety top pin 9 extends out of the upper end face of the knife arm body 3. A positioning key 10 is provided on one side of the knife retaining groove 6. The knife is provided with a positioning groove 11 that matches the positioning key 10. The knife is provided with a knife face 12 that matches the knife retaining groove 6.

[0018] The number of the top cutter rod 7 and the number of the safety top pin 9 are both two and they are symmetrically arranged in the cutter arm body 3.

[0019] The blade arm body 3 has a first receiving cavity 13 along its length. The top blade rod 7 is located in the first receiving cavity 13. The top blade rod 7 adopts a segmented design. The circumferential surface of the large-diameter end of the top blade rod 7 is provided with a sliding groove 14 along its axial direction. The inner wall of the first receiving cavity 13 is connected to a slider 15 that extends into the sliding groove 14. The large-diameter top end of the top blade rod 7 is close to the retaining claw 5. A spring 16 is sleeved on the small-diameter section of the top blade rod 7. The two ends of the spring 16 are respectively connected to the end face of the large-diameter end of the top blade rod 7 and the inner wall of the first receiving cavity 13. The spring 16 is in a stretched state.

[0020] The blade body 3 has a second storage cavity 17 along its thickness direction. The lower end face of the blade body 3 is connected to a top pin cover plate 18. The top pin cover plate 18 has a third storage cavity 19 that communicates with the second storage cavity 17. The safety top pin 9 is located in the top pin storage cavity formed by the second storage cavity 17 and the third storage cavity 19. The top end of the safety top pin 9 is connected to a top rod 20, which penetrates the upper end face of the blade body 3. The bottom end of the safety top pin 9 is connected to a top pin spring 22, which is in a compressed state. The small diameter end of the pusher rod 7 penetrates into the second storage cavity 17. The top of the safety top pin 9 near the pusher rod 7 is set as an inclined surface 21, and the end of the pusher rod 7 abuts against the inclined surface 21.

[0021] The working process of this utility model is as follows: The cam box 1 drives the output shaft 2 to rotate, which in turn drives the cutter arm body 3 to rotate and engage the cutter. The guide slope 8 located at the end of the top cutter rod 7 can play a guiding role, so that the cutter is smoothly engaged into the cutter claw 5. The cutter groove 6 is in contact with the cutter at the abutment surface 12. The positioning key 10 is engaged in the positioning groove 11, thereby performing the first step of locking the cutter. The elastic force provided by the top pin spring 22 keeps the safety top pin 9 in the pushed-out state, which in turn abuts the top rod 20 to keep the top cutter rod 7 in the extended state. One end of 7 abuts against the side of the tool to perform a second-step locking of the tool, thereby greatly improving the stability of tool changing; after the tool is locked, the cam box 1 drives the tool arm body 3 to take out the tool and rotate it to the tool changing position. The cam box 1 drives the output shaft 2 to retract, installing the tool into the tool slot. During the retraction of the output shaft 2, the push rod 20 touches the lower end face of the cam box 1 and pushes the safety pin 9 downward. The push rod 7 retracts under the contraction force of the spring 16, releasing the locking of the tool. The output shaft 2 drives the tool arm body 3 to rotate, releasing the tool.

[0022] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A dual lock knife changing arm characterized by: The utility model discloses a cam box, retractable rotary driven power output shaft of cam box and the cutter arm group connected to the end of power output shaft, the cutter arm group includes cutter arm body, the two ends of cutter arm body are equipped with the cutter clamping claw for grabbing cutter, the cutter clamping claw is equipped with cutter slot, the cutter slot is equipped with the cutter bar of floating near the side of cutter arm body, the cutter bar is equipped with the safety ejector pin for maintaining the cutter bar and keeping the state of stretching in cutter arm body and being driven through the spring elastic force and being matched with each other, the top end of safety ejector pin is stretched out the upper end surface of cutter arm body, one side of cutter slot is equipped with the positioning key, and the cutter is equipped with the positioning slot matched with positioning key.

2. The dual lock knife arm of claim 1, wherein: The number of the cutter bar and the safety ejector pin is two and symmetrically arranged in the cutter arm body.

3. The dual lock knife arm of claim 1, wherein: The cutter arm body is equipped with the first receiving cavity along the length direction, and the cutter bar is located in the first receiving cavity.

4. A dual lock knife changing arm according to claim 3, wherein: The cutter arm body is equipped with the second receiving cavity along the thickness direction, and the lower end surface of the cutter arm body is connected with the ejector pin cover plate. The top end of the safety ejector pin is connected with the top rod, the top rod penetrates the upper end surface of the cutter arm body, the bottom end of the safety ejector pin is connected with the ejector pin spring, the ejector pin spring is in the compressed state, the small diameter end of the cutter bar penetrates into the second receiving cavity, and the top of the side of the safety ejector pin close to the cutter bar is provided as an inclined surface.

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