Rotary tool changing mechanism

Abstract

The utility model provides a rotary tool changing mechanism, which relates to the technical field of tool changing mechanisms and comprises a tool changing arm mounted at a tool changing end, a tool loosening disc, an air cylinder and a pinning structure, and further comprises a mounting seat mounted at a driving end, a sliding component and a belt transmission component, a shaft sleeve seat is mounted on the mounting seat, and a rotating shaft is mounted in the shaft sleeve seat; the rotating shaft penetrates through the tool changing arm and extends to the tool changing end to be fixed, a rotating sleeve installed on the tool changing arm is fixed to the periphery of the rotating shaft, and the rotating shaft is driven to rotate to drive the tool changing arm to rotate. According to the rotary tool changing mechanism, key components such as the tool changing arm, the tool loosening disc, the air cylinder and the pinning structure are effectively integrated through the compact design, and compared with a traditional structure, the overall size of equipment is remarkably shortened, so that precious machine tool space is saved, and the machining efficiency is improved. And more layout possibilities are provided for other parts or functions of the machine tool, and the overall performance and flexibility of the machine tool are improved.

Description

Technical Field

[0001] This utility model relates to the field of tool changing mechanism technology, and in particular to a rotary tool changing mechanism. Background Technology

[0002] In the field of machining, the tool changing mechanism is an important component of CNC machine tools, machining centers and other equipment. Its performance directly affects the machining efficiency and accuracy of the machine tool. Traditional tool changing mechanisms often have problems such as complex structure, large overall size, slow tool changing speed and insufficient stability. These problems not only limit the machining capacity of the machine tool, but also increase the maintenance cost and operation difficulty of the equipment.

[0003] Currently, traditional tool changing mechanisms have complex structures, resulting in large overall dimensions that occupy valuable machine tool space and limit the layout of other machine tool components or functions. At the same time, due to the lack of advanced tool changing mechanisms, the tool changing speed is slow, and the stability and accuracy during the tool changing process are difficult to guarantee, affecting the machining efficiency and quality of the machine tool. In addition, traditional tool changing mechanisms lack flexible adjustment functions, making it difficult to quickly adapt to different machining needs, further limiting the application range of the machine tool.

[0004] Therefore, we propose a rotary tool changer mechanism. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies. The tool changing mechanism has a complex structure, resulting in a large overall size that occupies valuable space in the machine tool and limits the layout of other components or functions. Due to the lack of advancement in the tool changing mechanism, the tool changing speed is slow, and the stability and accuracy during the tool changing process are difficult to guarantee, affecting the machining efficiency and quality of the machine tool. Furthermore, traditional tool changing mechanisms lack flexible adjustment functions, making it difficult to quickly adapt to different machining needs, further limiting the application range of the machine tool.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A rotary tool changer mechanism is installed near the tool magazine spindle. The mechanism includes a tool changer arm, a tool release disc, a cylinder, and a locking structure mounted on the tool changer end. The tool changer arm and the tool release disc are located on both sides of the tool changer end, with a gap between them. The output end of the cylinder passes through the tool changer end and the tool release disc is mounted on the tool changer arm. The locking structure is installed at both ends of the tool changer arm, inside the tool changer arm, and at the end of the tool changer arm facing the tool release disc.

[0008] It also includes: a mounting base installed on the drive end, a sliding assembly, and a belt drive assembly. The mounting base is installed on the sliding assembly, and the belt drive assembly is fixed to the bottom of the mounting base. The mounting base is driven by the belt drive assembly to slide on the sliding assembly to adjust the distance between the mounting base and the tool changing end.

[0009] A bushing seat is installed on the mounting base, and a rotating shaft is installed inside the bushing seat. The rotating shaft extends through the tool changing arm and is fixed to the tool changing end. A rotating sleeve that is installed with the tool changing arm is fixed around the rotating shaft. The rotating shaft is driven to rotate, which in turn drives the tool changing arm to rotate.

[0010] Furthermore, both the tool changing end and the drive end are brackets, which can be mounted on a fixed base or on the X, Z, or Y axis rails.

[0011] Furthermore, the push rod of the locking structure corresponds to the loosening disc. The cylinder extends and retracts, causing the loosening disc to move away from / contact the push rod of the locking structure, thus causing the top block in the tool changing arm to extend / retract.

[0012] Furthermore, when the tool changing arm rotates, the tool changing part of the tool changing arm contacts the tool, causing the cylinder to be in an extended state and abut against the locking structure. After the tool changing arm contacts the tool, the cylinder is in a retracted state.

[0013] Furthermore, the sliding assembly includes a guide rail and a slider. The guide rail is installed on the side or bottom of the drive end bracket and has multiple sets of sliders that are slidably connected to and fixed to the mounting base.

[0014] Furthermore, the belt drive assembly includes a lead screw, a lead screw nut, a drive belt, and master-slave pulleys. The master-slave pulleys are mounted on the side of the drive end bracket away from the tool changing end. The lead screw nut is sleeved on the lead screw, and the lead screw travels in the same direction as the guide rail. The drive belt is sleeved around the master-slave pulleys. The master-slave pulley drive wheel is driven by a motor mounted inside the bracket below the lead screw. The driven wheel of the master-slave pulley is fixed to the lead screw. The forward and reverse control motor drives the master-slave pulleys to transmit power through the drive belt, thereby causing the lead screw nut on the lead screw to slide and adjust the distance between the lead screw and the tool changing end.

[0015] Furthermore, a motor mounting bracket is provided at the other end or top of the bushing seat for mounting a servo motor. When the motor mounting bracket is at the top of the top bushing seat, a right-angle transmission assembly is added, which drives the rotating shaft and the tool changer arm to rotate through the operation of the servo motor.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. The rotary tool changing mechanism of this utility model effectively integrates key components such as the tool changing arm, tool loosening disc, cylinder and pin tightening structure through a compact design. Compared with the traditional structure, it significantly shortens the overall size of the equipment. This not only saves valuable machine tool space, but also provides more layout possibilities for other parts or functions of the machine tool, thereby improving the overall performance and flexibility of the machine tool.

[0018] Furthermore, by fitting the overall bracket of this tool changing mechanism onto different modules, it can be used on a variety of devices (tool magazines), resulting in flexible product layout.

[0019] 2. The rotary tool changing mechanism of this utility model adopts an advanced tool changing mechanism and a precise adjustment system, realizing rapid tool replacement and secure installation. Through the cooperation of cylinder extension and retraction and pin tightening structure, the stability and accuracy of the tool changing process are ensured. At the same time, the flexible adjustment function of sliding component and belt drive component enables the tool changing mechanism to quickly adapt to different processing requirements, thereby greatly improving tool changing efficiency and processing efficiency. Attached Figure Description

[0020] Figure 1 A front view of the overall structure of a rotary tool changing mechanism provided by this utility model;

[0021] Figure 2 The rear view of the overall structure of a rotary tool changing mechanism provided by this utility model.

[0022] Legend: 1. Tool changing arm; 2. Tool loosening disc; 3. Cylinder; 4. Pin tightening structure; 5. Mounting base; 6. Sliding assembly; 61. Guide rail; 62. Slider; 7. Belt drive assembly; 71. Lead screw; 72. Lead screw nut; 73. Drive belt; 74. Master and slave pulleys; 8. Bushing seat; 81. Motor mounting bracket; 9. Rotating shaft; 10. Rotating sleeve; 11. Bracket. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below with reference to relevant embodiments, and several embodiments of this utility model will be given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this utility model more thorough and complete.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] Example 1

[0028] like Figure 1-2 As shown, this utility model provides a technical solution: a rotary tool changing mechanism, including: a tool changing arm 1, a tool loosening disc 2, a cylinder 3 and a locking structure 4 installed at the tool changing end. The tool changing arm 1 and the tool loosening disc 2 are respectively located on both sides of the tool changing end, and a gap is formed between the tool changing arm 1 and the tool changing end. The output end of the cylinder 3 passes through the tool changing end and the tool loosening disc 2 is installed corresponding to the tool changing arm 1. The locking structure 4 is installed at both ends of the tool changing arm 1, inside the tool changing arm 1 and at the end of the tool changing arm 1 facing the tool loosening disc 2.

[0029] It also includes: a mounting base 5, a sliding assembly 6, and a belt drive assembly 7 mounted on the drive end. The mounting base 5, the sliding assembly 6, and the belt drive assembly 7 together constitute a precision transmission system that drives the tool changing arm to perform tool removal and lifting actions. The mounting base 5 is mounted on the sliding assembly 6, and the belt drive assembly 7 is fixed to the bottom of the mounting base 5. The belt drive assembly 7 drives the mounting base 5 to slide on the sliding assembly 6 to adjust the distance between it and the tool changing end.

[0030] A bushing seat 8 is installed on the mounting base 5. A rotating shaft 9 is installed inside the bushing seat 8. The rotating shaft 9 extends through the tool changing arm 1 and is fixed to the tool changing end. A rotating sleeve 10, which is installed on the tool changing arm 1, is fixed around the rotating shaft 9. The rotating shaft 9 is driven to rotate, which in turn drives the tool changing arm 1 to rotate.

[0031] In the above embodiment, the tool changing arm 1 is in a vertical state and rotates 90°. The cylinder 3 is in an extended state and abuts against the locking structure 4. The servo motor drives the rotating shaft 9 to rotate, causing the tool changing arm 1 to rotate 90° and lock onto the tool holder. The cylinder 3 is in a retracted state, and the tool is fixed by the locking structure 4. Then, the belt drive assembly 7 drives the mounting base 5 to pull out the tool. The servo motor drives the rotating shaft 9 to rotate, causing the tool changing arm 1 to rotate 180° to feed the tool. At the same time, the cylinder 3 is in an extended state and abuts against the locking structure 4, causing the tool to disengage from the locking structure 4 and complete a set of tool changing actions. This process can be repeated to pick up and change tools on both sides of the tool magazine and tool holder.

[0032] Example 2

[0033] like Figure 1-2 As shown, both the tool changing end and the drive end are brackets 11. The brackets 11 can be installed on a fixed base or on the X, Z or Y axis rails to adapt to different processing requirements and machine tool layouts.

[0034] Furthermore, the push rod of the locking structure 4 corresponds to the loosening disc 2. The cylinder 3 extends and retracts, causing the loosening disc 2 to move away from / contact the push rod of the locking structure 4, thus extending / retracting the top block inside the tool changing section of the tool changing arm 1. When the tool changing arm 1 rotates, the tool changing section of the tool changing arm 1 contacts the tool, causing the cylinder 3 to be in an extended state and contact the locking structure 4. After the tool changing arm 1 contacts the tool, the cylinder 3 is in a retracted state. The locking structure 4 adopts existing technology (for more details, please refer to patent number CN202106232).

[0035] The sliding assembly 6 includes a guide rail 61 and a slider 62. The guide rail 61 is installed on the side or bottom of the drive end bracket 11 and has multiple sets of sliders 62 that are slidably connected to and fixed to the mounting base 5. When the belt drive assembly 7 drives the mounting base 5 to move, the guide rail 61 and slider 62 play a supporting and guiding role, so that the mounting base 5 can move stably.

[0036] The belt drive assembly 7 includes a lead screw 71, a lead screw nut 72, a drive belt 73, and a master-slave pulley 74. The master-slave pulley 74 is installed on the side of the drive end bracket 11 away from the tool changing end. The lead screw nut 72 is sleeved on the lead screw 71. The lead screw 71 has the same travel direction as the guide rail 61. The drive belt 73 is sleeved on the periphery of the master-slave pulley 74. The drive wheel of the master-slave pulley 74 is driven by a motor installed inside the bracket 11 below the lead screw 71. The driven wheel of the master-slave pulley 74 is fixed to the lead screw 71. The forward and reverse control motor drives the master-slave pulley 74 to drive through the drive belt 73, thereby causing the lead screw nut 72 on the lead screw 71 to slide and adjust the distance between it and the tool changing end.

[0037] The other end or top of the bushing seat 8 is provided with a motor mounting bracket 81 for mounting a servo motor (including a reducer). When the motor mounting bracket 81 is at the top of the top bushing seat 8, a right-angle transmission assembly is added, which drives the rotating shaft 9 and the tool changer arm 1 to rotate through the operation of the servo motor.

[0038] The working process of this utility model is as follows: When using a rotary tool changer, the tool changer is in its initial state, the tool changer arm 1 is vertical, the machine tool control system issues a tool change command, the cylinder 3 is in the extended state and drives the tool release disc 2 to abut against the locking structure 4 (top rod), causing the locking structure 4 (top block) to retract. At the same time, the servo motor starts and drives the rotary shaft 9 to rotate, causing the tool changer arm 1 to rotate 90 degrees and lock onto the tool holder. Then the cylinder 3 retracts and the locking structure 4 (top block) resets to fix the tool. At the same time, the belt drive assembly 7 starts to work, driving the master and slave belt pulleys 74 through the motor, and using the transmission belt 73 to drive the lead screw 71 to rotate, thereby causing the lead screw nut 72 to slide on the lead screw 71, so that the mounting seat 5 moves away from the tool removal end to complete the tool removal. Then the servo motor drives the rotary shaft 9 to rotate, causing the tool changer arm 1 to rotate 180 degrees. The cylinder 3 extends and pushes the tool release disc 2 close to the top rod of the locking structure 4, causing the locking structure 4 (top block) to retract, so that the tool is released from the fixing of the locking structure 4, and the tool removal is completed.

[0039] After the tool is removed by moving the mounting base 5 away from the tool removal end, the tool changing arm 1 rotates 180 degrees, and the mounting base 5 is reset so that the tool can be installed.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotary tool changer mechanism, wherein the tool changer mechanism is fitted and installed near the tool magazine spindle, characterized in that, include: The tool changing end is equipped with a tool changing arm (1), a tool loosening disc (2), a cylinder (3), and a locking structure (4). The tool changing arm (1) and the tool loosening disc (2) are located on both sides of the tool changing end, forming a gap between the tool changing arm (1) and the tool changing end. The output end of the cylinder (3) passes through the tool changing end and is equipped with the tool loosening disc (2) corresponding to the tool changing arm (1). The locking structure (4) is installed at both ends of the tool changing arm (1) and inside the tool changing arm (1) and at the end of the tool changing arm (1) facing the tool loosening disc (2). The tool changing end is also equipped with a mounting base (5), a sliding assembly (6), and a belt drive assembly (7). The mounting base (5) is mounted on the sliding assembly (6). The belt drive assembly (7) is fixed to the bottom of the mounting base (5). The mounting base (5) is driven by the belt drive assembly (7) to slide on the sliding assembly (6) to adjust the distance between the mounting base (5) and the tool changing end. A bushing seat (8) is mounted on the mounting base (5). A rotating shaft (9) is installed inside the bushing seat (8). The rotating shaft (9) extends through the tool changing arm (1) and is fixed to the tool changing end. A rotating sleeve (10) is fixed around the rotating shaft (9) and installed on the tool changing arm (1). The rotating shaft (9) is driven to rotate, which in turn drives the tool changing arm (1) to rotate.

2. The rotary tool changing mechanism according to claim 1, characterized in that: Both the tool changing end and the drive end are brackets (11), and the brackets (11) can be installed on a fixed base or on the X, Z or Y axis rails.

3. The rotary tool changing mechanism according to claim 1, characterized in that: The push rod of the locking structure (4) corresponds to the loosening disc (2). The cylinder (3) extends and retracts to drive the loosening disc (2) away from / against the push rod of the locking structure (4), causing the top block in the tool changing arm (1) to extend / retract.

4. A rotary tool changing mechanism according to claim 3, characterized in that: When the tool changing arm (1) rotates, the tool changing part of the tool changing arm (1) contacts the tool, and the cylinder (3) is in an extended state to abut against the locking structure (4). After the tool changing arm (1) contacts the tool, the cylinder (3) is in a retracted state.

5. A rotary tool changing mechanism according to claim 2, characterized in that: The sliding assembly (6) includes a guide rail (61) and a slider (62). The guide rail (61) is installed on the side or bottom of the drive end bracket (11) and has multiple sets of sliders (62) that are slidably connected to the mounting base (5).

6. A rotary tool changing mechanism according to claim 5, characterized in that: The belt drive assembly (7) includes a lead screw (71), a lead screw nut (72), a transmission belt (73), and a master-slave pulley (74). The master-slave pulley (74) is installed on the side of the drive end bracket (11) away from the tool changing end. The lead screw nut (72) is sleeved on the lead screw (71). The lead screw (71) and the guide rail (61) have the same travel direction. The transmission belt (73) is sleeved on the periphery of the master-slave pulley (74). The drive wheel of the master-slave pulley (74) is driven by a motor installed inside the bracket (11) below the lead screw (71). The driven wheel of the master-slave pulley (74) is fixed to the lead screw (71). The forward and reverse control motor drives the master-slave pulley (74) to drive through the transmission belt (73), thereby causing the lead screw nut (72) on the lead screw (71) to slide and adjust the distance between it and the tool changing end.

7. A rotary tool changing mechanism according to claim 1, characterized in that: The other end or top of the bushing seat (8) is provided with a motor mounting bracket (81) for mounting a servo motor. When the motor mounting bracket (81) is at the top of the top bushing seat (8), a right-angle transmission assembly is added, which drives the rotating shaft (9) and the tool changer (1) to rotate through the operation of the servo motor.

Images