Manipulator tool changing tool sleeve for chain type tool magazine

Abstract

The chain type tool magazine tool sleeve comprises a chain link, the chain link comprises a mounting sleeve, a connecting sleeve is fixedly arranged on the mounting sleeve, one end of the connecting sleeve is used for being inserted into a tool handle, a ball sleeve is arranged in the connecting sleeve, a plurality of steel balls are mounted on the ball sleeve, and the diameter of each steel ball is larger than the wall thickness of the ball sleeve. A locking shaft is arranged in the ball sleeve and comprises a rod portion and an end portion which are fixedly connected, an inner hole is formed in the position, corresponding to the position where the connecting sleeve is inserted into the knife handle, in the ball sleeve, the end portion is slidably connected into the inner hole, the rod portion penetrates through the ball sleeve towards the end away from the inner hole, and an annular receding groove is formed in the side wall of the end portion. The side, away from the bottom of the inner hole, of the receding groove is provided with a locking conical surface, the steel ball moves towards the outside of the ball sleeve through the locking conical surface, the rod part is sleeved with a spring, one end of the spring abuts against the ball sleeve, and the other end of the spring is used for driving the locking shaft to move to the locking conical surface to abut against the steel ball. The cutter sleeve has the effect that the cutter can be firmly connected to the cutter sleeve.

Description

Technical Field

[0001] The present application relates to the technical field of a chain tool magazine for machine tools, and in particular to a tool sleeve for a chain tool magazine for changing tools by a robot. Background Art

[0002] The tool holder is an important part of the tool magazine of the machine tool. There are multiple tools placed in the tool magazine of the machine tool. There are multiple tool holders in the tool magazine. Each tool holder is used to install a tool. The tool is connected to a tool holder. The tool holder adopts standard specifications and can be connected to any tool holder. Then the tool holder can drive the tool to move in the tool magazine, so that the tool can be moved to the tool magazine, which is convenient for tool management. At the same time, the tool can be moved to the tool changing position. Usually, a robot is used to automatically change the tool. The robot grabs the tool holder, and then the robot loosens the tool holder to remove the tool from the tool magazine, thereby improving the automation level of the machine tool.

[0003] The related technology discloses a chain structure of a chain tool magazine, which is composed of multiple single chain links connected in series. The single chain link includes an integrated chain link and a tool sleeve installed on the integrated chain link, and the tool sleeve is fastened to the front end of the integrated chain link; a tool locking device is provided in the tool sleeve, and the tool locking device includes a ball sleeve, a steel ball, a spring and a locking shaft. The ball sleeve is embedded in the tool sleeve and connected by screws. The steel balls are distributed in the ball channel at the bottom of the ball sleeve. The locking shaft is arranged inside the ball sleeve. Under the action of the spring, the steel ball can be pushed out of the ball channel and lock the tool handle.

[0004] Therefore, when the knife handle is taken out by a robot, the knife handle is pulled downward to squeeze the steel ball, causing the steel ball to shrink into the ball sleeve. However, when the knife handle is moved, it may be thrown out under the action of inertia. Utility Model Content

[0005] In order to make the tool more firmly connected to the tool holder and reduce the situation of the tool being thrown out, the present application provides a tool holder for a chain tool magazine for changing tools by a robot.

[0006] The present application provides a tool holder for a chain tool magazine for tool changing by a robot, which adopts the following technical solution:

[0007] The cam is secured to the inner wall of the tool holder and is adapted to engage the tool holder's inner wall, whereby the cam is secured to the tool holder's inner wall and adapted to engage the tool holder's outer wall.

[0008] Preferably, a plurality of through holes for accommodating steel balls are provided on the peripheral wall of the ball sleeve, the diameter of the through holes is equal to the diameter of the steel balls, and the diameter of one end of the through holes close to the outer wall of the ball sleeve is smaller than the diameter of the steel balls.

[0009] Preferably, a receiving hole is provided inside the end portion, a magnet is provided in the receiving hole, and the position of the magnet corresponds to the position of the give way groove.

[0010] Preferably, a guide hole is provided on the side wall of the end portion, a locking pin is provided in the guide hole, the axial direction of the locking pin is perpendicular to the sliding direction of the locking shaft, the locking pin is connected to the compression spring, and the force of the compression spring on the locking pin is used to drive the locking pin to extend from the guide hole, and a placement hole is provided on the side wall of the ball sleeve, the placement hole is located at one end of the through hole close to the bottom of the inner hole, an unlocking ball is provided in the placement hole, the diameter of the unlocking ball is equal to the wall thickness of the ball sleeve, and the placement hole is used to insert the end of the locking pin.

[0011] Preferably, a pressure cap is provided at one end of the rod away from the end portion, and the pressure cap is fixedly connected to the end portion of the rod by means of bolts, and one end of the spring abuts against the pressure cap.

[0012] Preferably, a flange portion is provided on the side wall of one end of the ball sleeve away from the inner hole, and a connecting bolt is provided on the flange portion. The connecting bolt passes through the flange portion and is threadedly connected to the connecting sleeve.

[0013] Preferably, a step is formed on the side wall of the connecting sleeve, and the step is used to abut against the end face of the mounting sleeve. A fixing bolt is provided on the mounting sleeve, and the fixing bolt passes through the mounting sleeve along the axial direction of the mounting sleeve and is threadedly connected to the connecting sleeve.

[0014] Preferably, the inner diameter of one end of the connecting sleeve for inserting the knife handle is equal to the outer diameter of the connection part between the knife handle and the connecting sleeve, and the outer diameter of the position of the ball sleeve where the steel ball is set is equal to the inner diameter of the knife handle.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] 1. When the knife handle is inserted into the connecting sleeve, the locking shaft moves under the action of the spring, causing the end head to move toward the bottom of the inner hole. Since the steel ball abuts against the locking cone surface, the steel ball can block the knife handle in the connecting sleeve. At the same time, due to the action of the spring, the locking cone surface located in the clearance groove away from the bottom of the inner hole abuts against the steel ball. Even if the knife handle is subjected to the inertial force and the steel ball has a tendency to rotate, the steel ball drives the end head to move, causing the locking cone surface to further move the steel ball in the direction of locking the knife handle, thereby making the tool more firmly connected to the knife sleeve and reducing the possibility of the tool being thrown out. When the knife handle needs to be loosened, the pressing rod can be used to compress the spring, and the steel ball enters the clearance groove, so that the knife handle can be removed from the connecting sleeve.

[0017] 2. The magnet set in the receiving hole has the function of magnetically attracting the steel ball. When the steel ball moves to the position corresponding to the clearance groove, the steel ball is attracted by the magnet and moves into the clearance groove, so that the steel ball can automatically make way for the knife handle, making it easier to remove the knife handle.

[0018] 3. A locking pin is provided in the guide hole. When the end head moves in the direction of loosening the tool handle, the locking pin can enter the placement hole. The unlocking ball in the placement hole protrudes from the inner wall of the ball sleeve. The locking pin can automatically lock the end head in the state where the steel ball is in the give way groove, making it convenient for the tool handle to be installed in the connecting sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 This is a schematic structural diagram of the knife handle in an embodiment of the present application;

[0021] Figure 2 This is a schematic diagram of the overall structure of a tool sleeve for a chain tool magazine for tool changing by a robot according to an embodiment of the present application;

[0022] Figure 3 This is a schematic diagram of the internal structure of the connecting sleeve in an embodiment of the present application;

[0023] Figure 4 This is a schematic structural diagram of the ball sleeve in an embodiment of the present application;

[0024] Figure 5 This is a schematic structural diagram of the locking shaft in an embodiment of the present application;

[0025] Figure 6 yes Figure 3 A partial enlarged schematic diagram of part A.

[0026] Explanation of the accompanying reference numerals: 1. Tool handle; 11. Main body; 12. Annular groove; 13. Connecting cone; 2. Chain link; 21. Mounting sleeve; 3. Connecting sleeve; 31. Step; 32. Fixing bolt; 33. Plug-in hole; 331. Annular groove; 4. Ball sleeve; 41. Flange; 42. Connecting bolt; 43. Through hole; 44. Inner hole; 45. Placement hole; 5. Locking shaft; 51. Rod; 52. End head; 521. Giving groove; 522. Accommodating hole; 523. Guide hole; 53. Pressing cap; 54. Spring; 55. Locking cone; 56. Magnet; 6. Steel ball; 7. Locking pin; 8. Compression spring; 9. Unlocking ball. DETAILED DESCRIPTION

[0027] The present application will be further described in detail below through the accompanying drawings and examples, through which the features and advantages of the present application will become more clear and distinct.

[0028] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by technicians in the technical field to which this application belongs; the terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions.

[0029] The phrase "embodiment" mentioned in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it refer to independent or alternative embodiments that are mutually exclusive with other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0030] refer to Figure 1 , tool handle 1, the tool handle 1 is the connecting part between the machine tool spindle and the tool, the tool handle 1 in this embodiment includes a body 11, the end of the body 11 away from the tool is configured to be cylindrical, and an annular groove 12 is opened on the inner wall, and the side wall of the upper part of the annular groove 12 is inclined to form a conical connecting cone surface 13.

[0031] The embodiment of the present application discloses a tool sleeve for a chain tool magazine for changing tools by a manipulator. The tool sleeve is used to connect the tool handle 1 to facilitate taking the tool out of the tool magazine or putting it back into the tool magazine. Figure 2 and Figure 3 , including chain links 2, each chain link 2 including a mounting sleeve 21, one mounting sleeve 21 corresponding to each chain link 2, and multiple chain links 2 are connected in series so as to rotate in the tool magazine. A connecting sleeve 3 is fixedly provided at one end of the mounting sleeve 21, one end of the connecting sleeve 3 is connected to the mounting sleeve 21, and the other end is used to insert the tool handle 1. A ball sleeve 4 is provided inside the connecting sleeve 3, and the ball sleeve 4 is fixed to the connecting sleeve 3. One end of the ball sleeve 4 extends to the position where the tool handle 1 is inserted, so that the end of the ball sleeve 4 is inserted into the cylindrical structure of the tool handle 1. A locking shaft 5 is provided inside the ball sleeve 4, and a steel ball 6 is provided on the ball sleeve 4. The locking shaft 5 is used to push the steel ball 6 to lock the tool handle 1.

[0032] refer to Figure 3 and Figure 4 A step 31 is formed on the side wall of the connecting sleeve 3. The step 31 is used to abut against the end face of the mounting sleeve 21. A fixing bolt 32 is provided on the mounting sleeve 21. The fixing bolt 32 passes through the mounting sleeve 21 along the axial direction of the mounting sleeve 21, so that the end of the fixing bolt 32 is threadedly connected to the connecting sleeve 3, thereby fixing the connecting sleeve 3 to the mounting sleeve 21. A plug hole 33 is provided at the lower end of the connecting sleeve 3. The diameter of the plug hole 33 is equal to the diameter of the cylindrical portion of the shank 1. At the same time, the shank 1 abuts against the end of the connecting sleeve 3. The end of the connecting sleeve 3 away from the shank 1 is inserted into the interior of the mounting sleeve 21. At the same time, a flange portion 41 is formed on the peripheral wall of the end of the connecting sleeve 3 away from the shank 1. A connecting bolt 42 is provided on the flange portion 41. The connecting bolt 42 passes through the flange portion 41 and is threadedly connected to the connecting sleeve 3, so that the ball sleeve 4 is fixedly connected to the connecting sleeve 3.

[0033] refer to Figure 5 and Figure 6 The end of the ball sleeve 4 closest to the knife handle 1 is inserted into the insertion hole 33, and the outer diameter of the end of the ball sleeve 4 located in the insertion hole 33 is equal to the inner diameter of the cylindrical structure of the knife handle 1, so that an annular groove 331 for mounting the knife handle 1 is formed between the outer wall of the ball sleeve 4 and the inner wall of the insertion hole 33. A plurality of through holes 43 are opened on the peripheral wall of the end of the ball sleeve 4 located in the insertion hole 33. The steel ball 6 is placed in the through holes 43, and the diameter of the steel ball 6 is greater than the length of the through holes 43. Multiple through holes 43 are evenly arranged on the peripheral wall of the ball sleeve 4, and the diameter of the through hole 43 at the end of the ball sleeve 4 located in the outer wall is smaller than the diameter of the steel ball 6. The diameter inside the through hole 43 is equal to the diameter of the steel ball 6, so that the steel ball 6 can move in the through hole 43. When the knife handle 1 is inserted into the annular groove 331, the steel ball 6 first protrudes from the inner wall of the ball sleeve 4. When the knife handle 1 is installed in place, the steel ball 6 moves along the through hole 43, so that the steel ball 6 protrudes from the outer wall of the ball sleeve 4. The position of the steel ball 6 on the inner wall of the ball sleeve 4 is abutted by the locking shaft 5, so that the steel ball 6 is blocked on the connecting conical surface 13 of the knife handle 1, and then the knife handle 1 can be locked in the plug hole 33, so that the knife handle 1 and the connecting sleeve 3 are fixed.

[0034] refer to Figure 3 、 Figure 4 and Figure 5 The locking shaft 5 is inserted into the interior of the ball sleeve 4 and can slide along the axis of the ball sleeve 4. The locking shaft 5 includes a rod 51 and an end head 52. An inner hole 44 is formed inside the ball sleeve 4. The inner hole 44 is located at one end of the ball sleeve 4 located in the insertion hole 33. The diameter of the inner hole 44 is equal to the diameter of the end head 52. The diameter of the rod 51 is smaller than the diameter of the end head 52. The rod 51 is coaxially fixed with the end head 52. The rod 51 passes through the ball sleeve 4 in a direction away from the inner hole 44. The rod 51 is used to connect a pressure cap 53. The pressure cap 53 can be fixed to the end of the rod 51 by bolts. A spring 54 is sleeved on the rod 51. One end of the spring 54 abuts against the ball sleeve 4 and the other end abuts against the pressure cap 53, so that the spring 54 is in a compressed state. The spring 54 exerts a force on the pressure cap 53, causing the end head 52 to move toward the bottom of the inner hole 44. An annular clearance groove 521 is provided on the outer wall of the end head 52. The depth of the clearance groove 521 is used to accommodate the portion of the steel ball 6 protruding toward the inner side of the ball sleeve 4. A locking cone 55 is provided on the side of the clearance groove 521 away from the bottom of the inner hole 44. The locking cone 55 is used to abut the steel ball 6. The locking cone 55 is provided on the outer peripheral wall of the end head 52. The side of the locking cone 55 away from the clearance groove 521 is the larger end of the locking cone 55. The locking cone 55 is connected to the side of the clearance groove 521. The steel ball 6 is able to enter the locking conical surface 55 from the position of the clearance groove 521. When the spring 54 moves the end head 52 toward the bottom of the inner hole 44, the locking conical surface 55 pushes the steel ball 6 toward the outside of the ball sleeve 4 and causes the steel ball 6 to press against the connecting conical surface 13 of the knife handle 1. At this time, even if the knife handle 1 tends to escape outward due to inertia, the rotation of the connecting conical surface 13 on the steel ball 6 can cause the locking conical surface 55 to further move in the direction of squeezing the steel ball 6, thereby ensuring a more secure connection to the knife handle 1. When the knife handle 1 needs to be removed from the annular groove 331, the driving member, which can be a cylinder, is pressed from the position of the pressure cap 53, further compressing the spring 54, thereby allowing the clearance groove 521 of the end head 52 to reach the position of the steel ball 6, allowing the steel ball 6 to enter the position inside the ball sleeve 4, and releasing the locking force on the knife handle 1.

[0035] refer to Figure 5 A receiving hole 522 is defined within the end portion 52, within which a magnet 56 is disposed. The magnet 56 is positioned correspondingly to the clearance groove 521. The steel ball 6 is made of a material that is magnetically attracted to the magnet 56. When the end portion 52 is moved to the clearance groove 521 and faces the steel ball 6, the steel ball 6 is automatically attracted to the inner side of the ball sleeve 4 under the force of the magnet 56, thereby preventing the steel ball 6 from blocking the knife handle 1 and further facilitating removal of the knife handle 1.

[0036] refer to Figure 6 A locking pin 7 is disposed within the end portion 52. A guide hole 523 is defined on the side wall of the end portion 52. The locking pin 7 is slidably connected within the guide hole 523, and the axial direction of the locking pin 7 is perpendicular to the sliding direction of the locking shaft 5. A compression spring 8 is also disposed on one end of the locking pin 7 located within the guide hole 523. One end of the compression spring 8 abuts within the end portion 52, and the other end abuts against the locking pin 7. The force exerted by the compression spring 8 on the locking pin 7 is used to drive the locking pin 7 out of the guide hole 523. An unlocking ball 9 is disposed on the side wall of the ball sleeve 4. The diameter of the unlocking ball 9 is equal to the wall thickness of the ball sleeve 4. A placement hole 45 is defined on the ball sleeve 4. The placement hole 45 is located on the side of the through hole 43 near the bottom of the inner hole 44 and is used to connect with the end of the locking pin 7. When in use, the driving part squeezes the end head 52 in the direction of loosening the knife handle 1, and the locking pin 7 moves with the end head 52 to the position of the placement hole 45. When the knife handle 1 is taken out of the annular groove 331, the locking pin 7 is automatically inserted into the placement hole 45 under the action of the compression spring 8, and then the end head 52 is locked in the position where the steel ball 6 is in the yield groove 521. At this time, when the knife handle 1 is inserted into the plug-in hole 33 again, the knife handle 1 is not blocked by the steel ball 6, but directly squeezes the unlocking ball 9 through the knife handle 1, so that the unlocking ball 9 compresses the compression spring 8 through the locking pin 7, and then releases the end head 52, so that the end head 52 locks the knife handle 1 through the steel ball 6. Compared with the method of directly squeezing the steel ball 6 by the knife handle 1 and making the steel ball 6 squeeze the end head 52 and enter the plug-in hole 33, the plug-in force required for the knife handle 1 is smaller, which facilitates the connection of the knife handle 1.

[0037] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A tool holder for a chain tool magazine for changing tools by a robot, comprising a chain link (2), characterized in that: The chain link (2) includes a mounting sleeve (21), a connecting sleeve (3) is fixedly provided on the mounting sleeve (21), one end of the connecting sleeve (3) is used to insert the knife handle (1), a ball sleeve (4) is provided inside the connecting sleeve (3), a plurality of steel balls (6) are installed on the ball sleeve (4), the diameter of the steel balls (6) is greater than the wall thickness of the ball sleeve (4), a locking shaft (5) is provided inside the ball sleeve (4), the locking shaft (5) includes a fixedly connected rod portion (51) and an end portion (52), an inner hole (44) is provided inside the ball sleeve (4) at a position corresponding to the insertion of the connecting sleeve (3) into the knife handle (1), and the end portion ( 52) is slidably connected in the inner hole (44), the rod (51) passes through the ball sleeve (4) toward the end away from the inner hole (44), and an annular clearance groove (521) is provided on the side wall of the end head (52), and a locking cone (55) is provided on the side of the clearance groove (521) away from the bottom of the inner hole (44). The steel ball (6) moves toward the outside of the ball sleeve (4) through the locking cone (55). A spring (54) is sleeved on the rod (51), one end of the spring (54) abuts on the ball sleeve (4), and the other end is used to drive the locking shaft (5) to move to the locking cone (55) to abut against the steel ball (6).

2. The tool holder for a chain tool magazine for tool changing by a robot according to claim 1, characterized in that: A plurality of through holes (43) for accommodating the steel balls (6) are provided on the peripheral wall of the ball sleeve (4), the diameter of the through holes (43) being equal to the diameter of the steel balls (6), and the diameter of one end of the through holes (43) close to the outer wall of the ball sleeve (4) being smaller than the diameter of the steel balls (6).

3. The tool holder for a chain tool magazine for tool changing by a robot according to claim 2, characterized in that: An accommodating hole (522) is provided inside the end portion (52), a magnet (56) is provided in the accommodating hole (522), and the position of the magnet (56) corresponds to the position of the clearance groove (521).

4. The tool holder for a chain tool magazine for tool changing by a robot according to claim 3, characterized in that: A guide hole (523) is provided on the side wall of the end portion (52), and a lock pin (7) is provided in the guide hole (523). The axial direction of the lock pin (7) is perpendicular to the sliding direction of the locking shaft (5). The lock pin (7) is connected to the compression spring (8). The force of the compression spring (8) on the lock pin (7) is used to drive the lock pin (7) to extend from the guide hole (523). A placement hole (45) is provided on the side wall of the ball sleeve (4). The placement hole (45) is located at one end of the through hole (43) close to the bottom of the inner hole (44). An unlocking ball (9) is provided in the placement hole (45). The diameter of the unlocking ball (9) is equal to the wall thickness of the ball sleeve (4). The placement hole (45) is used to insert the end of the lock pin (7).

5. The tool holder for a chain tool magazine for tool changing by a robot according to claim 1, characterized in that: A pressure cap (53) is provided at one end of the rod (51) away from the end portion (52). The pressure cap (53) is fixedly connected to the end portion of the rod (51) by means of bolts. One end of the spring (54) abuts against the pressure cap (53).

6. The tool holder for a chain tool magazine for tool changing by a robot according to claim 1, characterized in that: A flange portion (41) is provided on the side wall of one end of the ball sleeve (4) away from the inner hole (44), and a connecting bolt (42) is provided on the flange portion (41). The connecting bolt (42) passes through the flange portion (41) and is threadedly connected to the connecting sleeve (3).

7. The tool holder for a chain tool magazine for tool changing by a robot according to claim 1, characterized in that: A step (31) is formed on the side wall of the connecting sleeve (3), and the step (31) is used to abut against the end surface of the mounting sleeve (21). A fixing bolt (32) is provided on the mounting sleeve (21), and the fixing bolt (32) passes through the mounting sleeve (21) along the axial direction of the mounting sleeve (21) and is threadedly connected to the connecting sleeve (3).

8. The tool holder for a chain tool magazine for tool changing by a robot according to claim 1, characterized in that: The inner diameter of one end of the connecting sleeve (3) for inserting the knife handle (1) is equal to the outer diameter of the connection portion between the knife handle (1) and the connecting sleeve (3); the outer diameter of the position of the ball sleeve (4) where the steel ball (6) is arranged is equal to the inner diameter of the knife handle (1).

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