Milling tool changer

Abstract

The utility model relates to the technical field of machine tools, in particular to a milling tool changer which comprises an outer cover, a tool changing disc, a rotating driver, a plurality of tool rests, a plurality of locking structures and a plurality of limiting mechanisms, and the plurality of tool rests, the plurality of locking structures and the plurality of limiting mechanisms are arranged in a one-to-one correspondence mode. The multiple limiting mechanisms and the multiple locking structures are distributed in an arc shape around the rotating axis of the tool changing disc, the tool rest extends out of the edge of the tool changing disc in a cantilever mode, the locking structures are used for locking the tool rest on the tool changing disc, the tool rest is used for storing tools, and the limiting mechanisms are used for limiting the tools on the tool rest; a cutter outlet is formed in one side of the outer cover and used for allowing a cutter to stretch out of the outer cover. The outer end of the tool rest is concavely provided with a bayonet used for clamping a tool from outside to inside. The tool rest is convenient to replace, tools stored in the tool rest are limited through the limiting mechanism, the tools and the tool rest are prevented from loosening, and accidents that the tools fall off are reduced.

Description

Technical Field

[0001] This utility model relates to the field of wire technology, and in particular to a milling tool changer. Background Technology

[0002] In milling, different cutting tools are required depending on the workpiece's machining process. For workpieces with complex structures, tool changing is necessary during machining. Tool changers supply different tools to improve tool changing efficiency, and are particularly suitable for machining operations requiring frequent tool changes, such as milling, turning, and drilling. They are widely used in various fields of machinery manufacturing, mold making, and automotive parts processing. In existing technologies, the tools in tool changers are simply clamped onto the tool holder. After prolonged use, wear on the tool holder can cause loosening between the tool holder and the tool, and tools may even fall off during tool changes. Furthermore, excessively fast tool changing speeds can easily cause tools to detach from the tool holder, hindering the speed of tool changes. For example, existing patents include an automatic tool changer disclosed in Chinese patent application number 201720155361.2 and an automatic tool changer for CNC machining centers disclosed in Chinese patent application number 202311313266.7.

[0003] Therefore, the defects are very obvious, and a solution is urgently needed. Utility Model Content

[0004] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a milling tool changer.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A milling tool changer includes an outer cover, a tool changer disc rotatably disposed within the outer cover, a rotary driver mounted on the outer cover for driving the tool changer disc to rotate, multiple tool holders detachably disposed on the tool changer disc, multiple locking structures disposed on the top surface of the tool changer disc, and multiple limiting mechanisms disposed on the bottom surface of the tool changer disc. The multiple tool holders, multiple locking structures, and multiple limiting mechanisms are respectively arranged in a one-to-one correspondence. The multiple limiting mechanisms and multiple locking structures are respectively arranged in an arc shape around the rotation axis of the tool changer disc. The tool holders extend cantilevered out of the edge of the tool changer disc. The locking structures are used to lock the tool holders on the tool changer disc. The tool holders are used to store tools. The limiting mechanisms are used to limit the tools on the tool holders. A tool outlet is opened on one side of the outer cover for the tool to extend out of the outer cover. The outer end of the tool holder is recessed from the outside to the inside for locking the tool.

[0007] Furthermore, the limiting mechanism includes two limiting plates arranged opposite each other and a limiting drive module installed on the bottom surface of the tool changer for driving the two limiting plates closer to or further away from each other. The two limiting plates extend cantilevered out of the edge of the tool changer; the two limiting plates are used to limit the tool.

[0008] Furthermore, the limit drive module includes a slide, two rocker arms, and a linear driver. The linear driver is mounted on the bottom surface of the tool changer, and the slide is slidably connected to the bottom surface of the tool changer. The linear driver is used to drive the slide to reciprocate. The two rocker arms are respectively set to correspond one-to-one with the two limit plates. The two ends of the rocker arms are respectively hinged to the inner ends of the slide and the limit plates. The inner ends of the two limit plates are slidably connected to the bottom surface of the tool changer. The sliding direction of the slide and the sliding direction of the limit plates are intersected.

[0009] Furthermore, the bottom surface of the tool changer is radially provided with a first sliding groove, and the slide block is provided with a first slider, which slides in cooperation with the first sliding groove; the bottom surface of the tool changer is recessed with two second sliding grooves, which are on the same straight line and are perpendicular to the first sliding groove; the inner end of the limiting plate is provided with a second slider, which slides in cooperation with the second sliding groove.

[0010] Furthermore, each of the two limiting plates has a protruding limiting block on one side that is close to the other, and the limiting blocks on the two limiting plates are staggered; when the two limiting plates are brought together, the two limiting blocks are either overlapped or spaced apart.

[0011] Furthermore, the top surface of the tool changer is provided with a positioning post, and the tool holder is provided with a positioning hole, into which the positioning post can be inserted.

[0012] Furthermore, the locking structure includes a sliding sleeve fixedly disposed on the top surface of the tool changer, a sliding rod that slides through the sliding sleeve, an insert block disposed at one end of the sliding rod near the tool holder, and a locking fastener for locking the sliding rod onto the sliding sleeve. The sliding rod and the sliding sleeve are slidably engaged, and a slot is provided at the inner end of the tool holder, into which the insert block can be inserted.

[0013] Furthermore, the inner end of the tool holder is provided with a guide groove, which is recessed from the top wall of the slot. The top surface of the insertion block is provided with a guide block, which is adapted to the guide groove. A guide post is provided in the guide groove, and the guide block has a guide hole, which can be inserted into the guide hole.

[0014] Furthermore, a limiting groove is provided in the middle of the slide rod, and a limiting rod is provided in the middle of the slide sleeve that passes through the limiting groove. The inner side wall of the limiting groove slides and the outer side wall of the limiting rod slide against each other.

[0015] Furthermore, the locking device is an elastic pin set in the sliding sleeve. The slide rod has an unlocking hole and a locking hole along its length. Both the unlocking hole and the locking hole are connected to the limiting slide groove. The unlocking hole and the locking hole are located at both ends of the slide rod, with the unlocking hole located close to the insert block. The pin shaft of the elastic pin can be elastically pulled out or inserted into the unlocking hole or the locking hole.

[0016] The beneficial effects of this utility model are as follows: In practical applications, the tool holder is snapped into the slot of the tool post, allowing the tool post to store the tool. The limiting mechanism limits the tool holder or tool shank, ensuring the tool is stably stored on the tool post. This prevents the tool from loosening when the tool changer rotates, thus preventing the tool from falling off during tool changes and speeding up the tool change process. When a tool change is needed, the rotary driver drives the tool changer to rotate a preset angle, causing the tool post containing the required tool to rotate to the tool outlet and extend outwards. Outside the cover, when the tool-changing robot picks up the tool, the limiting mechanism releases its restriction on the tool, allowing the robot to remove the tool from the tool holder and engage the tool removed from the CNC machine tool with the tool holder's slot. The limiting mechanism then restricts the tools stored on the tool holder. When a corresponding tool holder needs to be replaced, the locking structure unlocks the tool holder, allowing it to be removed from the tool changing disc. A new tool holder is then installed on the tool changing disc and locked in place by the locking structure, facilitating tool holder replacement. This invention facilitates tool holder replacement and, through the limiting mechanism, prevents the tools from loosening and reduces the risk of accidental tool drops. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a three-dimensional structural diagram of the concealed outer cover of this utility model.

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0020] Figure 4 This is a three-dimensional structural diagram of the present invention from another perspective after the concealed outer cover is installed.

[0021] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0022] Figure 6 This is a three-dimensional structural diagram of the tool holder, limiting mechanism, and tool of this utility model.

[0023] Figure 7 This is a partial exploded view of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Outer cover; 2. Tool changer; 3. Rotary driver; 4. Tool holder; 5. Locking structure; 6. Limiting mechanism; 7. Tool outlet; 8. Bayonet; 9. Limiting plate; 10. Limiting drive module; 11. Slide; 12. Swing rod; 13. Linear driver; 14. First slide groove; 15. First slider; 16. Second slide groove; 17. Second slider; 18. Limiting block; 19. Positioning post; 20. Positioning hole; 21. Sliding sleeve; 22. Sliding rod; 23. Insert block; 24. Locking device; 25. Slot; 26. Guide groove; 27. Guide block; 28. Guide post; 29. ​​Guide hole; 30. Limiting slide groove; 31. Limiting rod; 32. Unlocking hole; 33. Locking hole; 34. Through hole; 35. Push-pull handle; 36. Baffle; 37. Tool. Detailed Implementation

[0026] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0027] like Figures 1 to 7 As shown, this utility model provides a milling tool changer, which includes an outer cover 1, a tool changer 2 rotatably disposed within the outer cover 1, a rotary driver 3 mounted on the outer cover 1 and used to drive the tool changer 2 to rotate, multiple tool holders 4 detachably disposed on the tool changer 2, multiple locking structures 5 disposed on the top surface of the tool changer 2, and multiple limiting mechanisms 6 disposed on the bottom surface of the tool changer 2. The multiple tool holders 4, multiple locking structures 5, and multiple limiting mechanisms 6 are respectively and correspondingly arranged. Positioning mechanism 6 and multiple locking structures 5 are arranged in an arc around the rotation axis of tool changer 2. Tool holder 4 extends out of the edge of tool changer 2 in a cantilever manner. Locking structure 5 is used to lock tool holder 4 on tool changer 2. Tool holder 4 is used to store tool 37. Limiting mechanism 6 is used to limit tool 37 on tool holder 4. A tool outlet 7 is provided on one side of outer cover 1. Tool outlet 7 is used to allow tool 37 to extend out of outer cover 1. The outer end of tool holder 4 is recessed from the outside to the inside for locking tool 37.

[0028] In practical applications, the tool holder of the tool 37 is engaged with the slot 8 of the tool holder 4, allowing the tool holder 4 to store the tool 37. The limiting mechanism 6 limits the tool holder or tool shank of the tool 37 to ensure that the tool 37 is stably stored on the tool holder 4. This prevents the tool 37 from becoming loose from the tool holder 4 when the tool changer 2 rotates for tool changing, thus preventing the tool 37 from falling off during tool changing and accelerating the tool changing speed. When a tool change is needed, the drive 3 rotates the tool changer 2 to a preset angle, causing the tool holder 4, which holds the required tool 37, to rotate to the tool outlet 7 and extend beyond the outer cover 1. When the robotic arm picks up the tool 37, the limiting mechanism 6 releases its restriction on the tool 37, allowing the tool-changing robotic arm to remove the tool 37 from the tool holder 4 and engage the tool 37 removed from the CNC machine tool with the slot 8 of the tool holder 4. Then, the limiting mechanism 6 limits the tool 37 stored in the tool holder 4. When the corresponding tool holder 4 needs to be replaced, the locking structure 5 unlocks the tool holder 4, allowing it to be removed from the tool changing disc 2. A new tool holder 4 is then installed on the tool changing disc 2, and the locking structure 5 locks the new tool holder 4 onto the tool changing disc 2, facilitating the replacement of the tool holder 4. This invention facilitates the replacement of the tool holder 4, and the limiting mechanism 6 limits the tool 37 stored in the tool holder 4, preventing the tool 37 from loosening and reducing the risk of the tool 37 falling.

[0029] In this embodiment, the limiting mechanism 6 includes two limiting plates 9 arranged opposite to each other and a limiting drive module 10 installed on the bottom surface of the tool changer 2 and used to drive the two limiting plates 9 to move closer or further away from each other. The two limiting plates 9 extend out of the edge of the tool changer 2 in a cantilever manner; the two limiting plates 9 are used to limit the cutting tool 37.

[0030] In practical applications, the tool holder of the tool 37 is engaged with the slot 8 of the tool holder 4. The tool holder 4 stores the tool 37, and the limit drive module 10 drives the two limit plates 9 to approach each other until the two limit plates 9 cooperate to limit the tool holder or tool bar of the tool 37, so that the tool 37 can be stably stored on the tool holder 4.

[0031] In this embodiment, the limit drive module 10 includes a slide 11, two rocker arms 12, and a linear driver 13. The linear driver 13 is mounted on the bottom surface of the tool changer 2, and the slide 11 is slidably connected to the bottom surface of the tool changer 2. The linear driver 13 drives the slide 11 to reciprocate. The two rocker arms 12 are respectively configured to correspond one-to-one with two limit plates 9. The two ends of the rocker arms 12 are hinged to the inner ends of the slide 11 and the limit plates 9, respectively. The inner ends of the two limit plates 9 are slidably connected to the bottom surface of the tool changer 2. The sliding direction of the slide 11 is intersected with the sliding direction of the limit plates 9. Specifically, the linear driver 13 can be a cylinder or a linear motor, etc., and the sliding direction of the slide 11 is perpendicular to the sliding direction of the limit plates 9.

[0032] In practical applications, the two limiting plates 9 move closer together to limit the tool holder or tool bar of the tool 37. When it is necessary to release the limit on the tool 37, the linear actuator 13 drives the slide 11 to move outward along the radial direction of the tool changer 2. The outward movement of the slide 11 drives the two rocker arms 12 to move outward. Since the two ends of the rocker arms 12 are hinged to the slide 11 and the limiting plate 9 respectively, and the limiting plate 9 can slide relative to the tool changer 2 in a direction perpendicular to the radial direction of the tool changer 2, the rocker arms 12 will swing as they move outward. The two rocker arms 12 that move outward and swing will drive the two limiting plates 9 to move away from each other, so that the two limiting plates 9 release the limit on the tool 37. When it is necessary to limit the tool 37, the linear actuator 13 drives the slide 11 and the two rocker arms 12 to move inward and swing. The two rocker arms 12 that move inward and swing will drive the two limiting plates 9 to move closer together until the two limiting plates 9 limit the tool 37.

[0033] In this embodiment, the bottom surface of the tool changer 2 is radially provided with a first sliding groove 14, and the slide block 11 is provided with a first slider 15, which slides in cooperation with the first sliding groove 14. The bottom surface of the tool changer 2 is recessed with two second sliding grooves 16, which are collinear and perpendicular to the first sliding groove 14. The inner end of the limiting plate 9 is provided with a second slider 17, which slides in cooperation with the second sliding groove 16. During the reciprocating movement of the slide block 11 driven by the linear actuator 13, the first slider 15 of the slide block 11 slides in cooperation with the first sliding groove 14 of the tool changer 2 to improve the stability of the slide block 11's movement. Furthermore, as the swing arm 12 moves and oscillates, the second slider 17 of the limiting plate 9 slides along the second sliding groove 16, causing the two limiting plates 9 to move closer to or further away from each other. This structural design improves the working stability of the limiting mechanism 6.

[0034] In this embodiment, each of the two limiting plates 9 has a protruding limiting block 18 on one side that is close to each other, and the limiting blocks 18 on the two limiting plates 9 are staggered; when the two limiting plates 9 are close together, the two limiting blocks 18 are either stacked or spaced apart.

[0035] In practical applications, when the two limiting plates 9 are fully close together, the limiting block 18 of one limiting plate 9 abuts against the inner wall of the other limiting plate 9 to limit the approach limit of the two limiting plates 9, thereby preventing the two limiting plates 9 from approaching too closely and causing a hard impact collision on the tool 37, and also preventing damage to the tool 37. When the two limiting plates 9 are fully close together, the two limiting blocks 18 overlap, and the two overlapping limiting blocks 18 limit the tool holder or tool bar of the tool 37 within the two limiting plates 9. Alternatively, the two limiting blocks 18 can be spaced apart, with the tool holder or tool bar of the tool 37 located between the two limiting blocks 18, in order to limit the tool 37.

[0036] In this embodiment, a positioning post 19 protrudes from the top surface of the tool changer 2, and a positioning hole 20 is provided on the tool holder 4, into which the positioning post 19 can be inserted. When the tool changer 2 and the tool holder 4 are assembled, the positioning post 19 of the tool changer 2 is inserted into the positioning hole 20 of the tool holder 4, which not only plays a positioning role in the assembly of the tool holder 4 and the tool changer 2, but also improves the firmness of the assembly of the tool holder 4 and the tool changer 2.

[0037] In this embodiment, the locking structure 5 includes a sliding sleeve 21 fixedly disposed on the top surface of the tool changer 2, a sliding rod 22 that slides through the sliding sleeve 21, an insert block 23 disposed at one end of the sliding rod 22 near the tool holder 4, and a locking fastener 24 for locking the sliding rod 22 onto the sliding sleeve 21. The sliding rod 22 and the sliding sleeve 21 are slidably engaged. The inner end of the tool holder 4 is provided with a slot 25, and the insert block 23 can be inserted into the slot 25.

[0038] When the locking structure 5 locks the tool holder 4 onto the tool changer 2, the positioning pin 19 of the tool changer 2 is inserted into the positioning hole 20 of the tool holder 4, the insert block 23 is inserted into the slot 25 of the tool holder 4, and the locking fastener 24 locks the slide rod 22 onto the sliding sleeve 21. When it is necessary to disassemble the tool holder 4, the locking fastener 24 releases the slide rod 22, allowing the slide rod 22 to slide relative to the sliding sleeve 21. At this time, an inward force is applied to the slide rod 22, causing the slide rod 22 to move inward relative to the sliding sleeve 21. The slide rod 22 moves the insert block 23 out of the tool holder 4's tool slot, allowing the tool holder 4 to be detached from the tool changer 2. When assembling the tool holder 4, first insert the tool holder 4's positioning hole 20 into the tool changer's positioning post 19. Then, move the slide rod 22 outwards, causing it to move the insert block 23 outwards until the insert block 23 is fully inserted into the slot 25. Finally, lock the slide rod 22 onto the sliding sleeve 21 using the locking fastener 24, thus locking the tool holder 4 onto the tool changer 2. This structural design facilitates the assembly and disassembly of the tool holder 4.

[0039] In this embodiment, the inner end of the tool holder 4 is provided with a guide groove 26, which is recessed from the top wall of the slot 25. The top surface of the insert block 23 is provided with a guide block 27, which is adapted to the guide groove 26. A guide post 28 is provided in the guide groove 26, and the guide block 27 is provided with a guide hole 29, which can be inserted into the guide hole 29. When the slide bar 22 moves the insert block 23 outward, not only is the insert block 23 inserted into the slot 25, but the guide block 27 is also inserted into the guide groove 26. The guide hole 29 of the guide block 27 is also inserted into the guide post 28 in the guide groove 26. The inner wall of the guide hole 29 abuts against the outer wall of the guide post 28, ensuring the positional accuracy and stability of the insert block 23 inserted into the slot 25. The guide hole 29 limits the guide post 28. Compared with relying solely on the locking fastener 24 to lock the slide bar 22 onto the slide sleeve 21, this further improves the firmness of the locking structure 5 in locking the tool holder 4, making the tool holder 4 more stable when assembled on the tool changer 2 and preventing it from loosening.

[0040] Specifically, the top surface of the guide block 27 is provided with a push-pull handle 35; the push-pull handle 35 allows the operator to push and pull the guide block 27 with their fingers, so as to facilitate the reciprocating movement of the slide bar 22, saving time and effort and making the operation convenient.

[0041] In this embodiment, a limiting groove 30 is provided in the middle of the slide rod 22, and a limiting rod 31 is provided in the middle of the slide sleeve 21, penetrating the limiting groove 30. The inner sidewall of the limiting groove 30 slides against the outer sidewall of the limiting rod 31. When the slide rod 22 slides relative to the slide sleeve 21, the limiting groove 30 slides along the limiting rod 31, further improving the stability of the slide rod 22 relative to the slide sleeve 21. Moreover, the length of the limiting groove 30 limits the sliding stroke of the slide rod 22, preventing the slide rod 22 from sliding excessively and disengaging from the slide sleeve 21.

[0042] In this embodiment, the locking device 24 is an elastic pin disposed on the sliding sleeve 21. The slide rod 22 is provided with an unlocking hole 32 and a locking hole 33 along its length. Both the unlocking hole 32 and the locking hole 33 are connected to the limiting slide groove 30. The unlocking hole 32 and the locking hole 33 are located at both ends of the slide rod 22 respectively. The unlocking hole 32 is disposed close to the insert block 23. The pin of the elastic pin can be elastically pulled out or inserted into the unlocking hole 32 or the locking hole 33.

[0043] When the insert 23 is inserted into the slot 25 to lock the tool holder 4, the pin of the elastic pin is inserted into the locking hole 33. When the tool holder 4 needs to be disassembled, the elastic pin is pulled, causing the pin to be pulled out of the locking hole 33. Then, an inward pushing force is applied to the slide bar 22, causing the slide bar 22 to move the insert 23 inward, thereby pulling the insert 23 out of the slot 25 until the unlocking hole 32 corresponds to the pin of the elastic pin. The pulling force on the elastic pin is released, and the pin of the elastic pin is inserted into the unlocking hole 32 under the action of elastic force, locking the slide bar 22 in the unlocked state, which facilitates the disassembly, assembly, and replacement of the tool holder 4. This structural design allows for easy disassembly and assembly of the tool holder 4 without the need for disassembly tools, making disassembly and assembly convenient, easy, and efficient.

[0044] Specifically, both the limiting rod 31 and the sliding sleeve 21 are provided with through holes 34, which are coaxially connected to the unlocking hole 32 or the locking hole 33, allowing the pin of the elastic pin to be inserted into the through hole 34. This structural design not only makes the structure of the elastic pin, limiting rod 31, sliding rod 22, and sliding sleeve 21 compact, but also facilitates locking the sliding rod 22 in either the unlocked or locked state. When the pin of the elastic pin is inserted into the unlocking hole 32, the sliding rod 22 is in the unlocked state; when the pin of the elastic pin is inserted into the locking hole 33, the sliding rod 22 is in the locked state.

[0045] Specifically, a baffle 36 is provided on one side of the eccentric position of the tool changer 2. The baffle 36 is concave and convex with the blade outlet 7. The baffle 36 is used to close or open the blade outlet 7 and can rotate into the outer cover 1. When the present invention is not in use, in order to prevent debris from entering the outer cover 1, the baffle 36 is located at the blade outlet 7 and closes the blade outlet 7, so as to encapsulate the tool changer 2 and the tool 37 and other structures in the outer cover 1, which plays a protective role. When the tool needs to be changed, the drive driver 3 drives the tool changer 2 to drive the baffle 36 to rotate synchronously. At the same time that the tool changer 2 rotates the tool 37 to the blade outlet 7, the baffle 36 can rotate into the outer cover 1.

[0046] Specifically, the outer cover 1 is an arc-shaped cover larger than a semicircle, roughly the shape of a cylinder with a portion longitudinally cut off at an eccentric position. The interior of the outer cover 1 has an arc-shaped hole communicating with the blade outlet 7. The tool changer 2 is an arc-shaped disk larger than a semicircle. The outer cover 1 and the tool changer 2 are coaxially arranged. The curvature of the arc-shaped cover, the arc-shaped disk, and the arc-shaped hole are the same. The curvature of the arc-shaped hole is greater than π. The blade outlet 7 forms a cross-section of the arc-shaped hole, the length of which is less than the diameter of the arc-shaped hole. The diameter of the arc-shaped disk is less than the length of the cross-section. An arc-shaped channel exists between the edge of the arc-shaped disk and the inner arc surface of the arc-shaped hole, allowing the tool 37 stored in the tool holder 4 to rotate. This structural design is novel, aesthetically pleasing, and compact. It also facilitates the insertion of the baffle 36 into the outer cover 1 or the closing of the blade outlet 7 by the baffle 36, and promotes smooth tool changing.

[0047] Specifically, the rotary driver 3 can be a motor, and it can be located either outside or inside the outer casing 1. When the rotary driver 3 is located outside the outer casing 1, its shaft rotates and extends into the outer casing 1, where it is fixedly connected to the center of the tool changer 2. When the rotary driver 3 is located outside the outer casing 1, the volume of the outer casing 1 is reduced, which is beneficial for heat dissipation. When the rotary driver 3 is located inside the outer casing 1, the outer casing 1 protects the rotary driver 3, preventing it from being exposed to the environment for extended periods, and it also has a simple and aesthetically pleasing appearance.

[0048] All technical features in this embodiment can be freely combined according to actual needs.

[0049] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A milling tool changer, characterized in that: The device includes an outer cover (1), a tool changer (2) rotatably disposed within the outer cover (1), a rotary driver (3) mounted on the outer cover (1) and used to drive the tool changer (2) to rotate, multiple tool holders (4) detachably disposed on the tool changer (2), multiple locking structures (5) disposed on the top surface of the tool changer (2), and multiple limiting mechanisms (6) disposed on the bottom surface of the tool changer (2). The multiple tool holders (4), multiple locking structures (5), and multiple limiting mechanisms (6) are respectively and correspondingly disposed one by one. The multiple limiting mechanisms (6) and multiple locking structures (5) are respectively... The tool holder (4) is arranged in an arc around the rotation axis of the tool changer (2). The tool holder (4) extends out of the edge of the tool changer (2) in a cantilever manner. The locking structure (5) is used to lock the tool holder (4) on the tool changer (2). The tool holder (4) is used to store the tool (37). The limiting mechanism (6) is used to limit the tool (37) on the tool holder (4). A tool outlet (7) is provided on one side of the outer cover (1). The tool outlet (7) is used to allow the tool (37) to extend out of the outer cover (1). The outer end of the tool holder (4) is recessed from the outside to the inside to provide a locking slot (8) for locking the tool (37).

2. A milling tool changer according to claim 1, characterized in that: The limiting mechanism (6) includes two limiting plates (9) arranged opposite to each other and a limiting drive module (10) installed on the bottom surface of the tool changer (2) and used to drive the two limiting plates (9) to move closer or further away from each other. The two limiting plates (9) extend out of the edge of the tool changer (2) in a cantilever manner. The two limiting plates (9) are used to limit the tool (37).

3. A milling tool changer according to claim 2, characterized in that: The limit drive module (10) includes a slide (11), two rocker arms (12) and a linear driver (13). The linear driver (13) is mounted on the bottom surface of the tool changer (2). The slide (11) is slidably connected to the bottom surface of the tool changer (2). The linear driver (13) is used to drive the slide (11) to move back and forth. The two rocker arms (12) are respectively set to correspond one-to-one with the two limit plates (9). The two ends of the rocker arms (12) are respectively hinged to the inner ends of the slide (11) and the limit plates (9). The inner ends of the two limit plates (9) are slidably connected to the bottom surface of the tool changer (2). The sliding direction of the slide (11) is intersected with the sliding direction of the limit plates (9).

4. A milling tool changer according to claim 3, characterized in that: The bottom surface of the tool changer (2) is radially provided with a first sliding groove (14), and the slide block (11) is provided with a first slider (15). The first slider (15) is slidably engaged with the first sliding groove (14). The bottom surface of the tool changer (2) is recessed with two second sliding grooves (16). The two second sliding grooves (16) are on the same straight line. The second sliding grooves (16) are perpendicular to the first sliding grooves (14). The inner end of the limiting plate (9) is provided with a second slider (17). The second slider (17) is slidably engaged with the second sliding grooves (16).

5. A milling tool changer according to claim 3, characterized in that: Both limiting plates (9) have a protruding limiting block (18) on their side that is close to each other. The limiting blocks (18) on the two limiting plates (9) are staggered. When the two limiting plates (9) are close together, the two limiting blocks (18) are either stacked or spaced apart.

6. A milling tool changer according to claim 1, characterized in that: The top surface of the tool changer (2) is provided with a positioning post (19), and the tool holder (4) is provided with a positioning hole (20). The positioning post (19) can be inserted into the positioning hole (20).

7. A milling tool changer according to claim 6, characterized in that: The locking structure (5) includes a sliding sleeve (21) fixedly installed on the top surface of the tool changer (2), a sliding rod (22) that slides through the sliding sleeve (21), an insert (23) installed at one end of the sliding rod (22) near the tool holder (4), and a locking fastener (24) for locking the sliding rod (22) onto the sliding sleeve (21). The sliding rod (22) and the sliding sleeve (21) are slidably engaged. The inner end of the tool holder (4) is provided with a slot (25), and the insert (23) can be inserted into the slot (25).

8. A milling tool changer according to claim 7, characterized in that: The inner end of the tool holder (4) is provided with a guide groove (26), which is recessed from the top wall of the slot (25). The top surface of the insert (23) is provided with a guide block (27), which is adapted to the guide groove (26). A guide post (28) is provided in the guide groove (26), and the guide block (27) is provided with a guide hole (29). The guide post (28) can be inserted into the guide hole (29).

9. A milling tool changer according to claim 7, characterized in that: A limiting groove (30) is provided in the middle of the slide rod (22), and a limiting rod (31) that penetrates the limiting groove (30) is provided in the middle of the slide sleeve (21). The inner side wall of the limiting groove (30) slides against the outer side wall of the limiting rod (31).

10. A milling tool changer according to claim 8, characterized in that: The locking device (24) is an elastic pin set on the sliding sleeve (21). The slide rod (22) has an unlocking hole (32) and a locking hole (33) along its length. Both the unlocking hole (32) and the locking hole (33) are connected to the limiting slide groove (30). The unlocking hole (32) and the locking hole (33) are located at the two ends of the slide rod (22). The unlocking hole (32) is set close to the insert block (23). The pin of the elastic pin can be elastically pulled out or inserted into the unlocking hole (32) or the locking hole (33).

Images