Chain type tool magazine and numerical control drilling machine

Abstract

The application discloses a chain type tool magazine and a numerical control drilling machine. The chain type tool magazine is applied to the numerical control drilling machine. A spindle of the numerical control drilling machine is used for taking and placing a tool handle. A U-shaped guide sleeve fixed end of the numerical control drilling machine is used for taking and placing a guide sleeve. The chain type tool magazine comprises a rack, one driving wheel, at least two driven wheels and a chain clamping mechanism. The driving wheel and the at least two driven wheels are arranged on the rack. The at least two driven wheels are rotationally connected with the rack. The chain clamping mechanism is transmissionally connected with the driving wheel and the at least two driven wheels. The chain clamping mechanism comprises a plurality of first chain link clamping units and a plurality of second chain link clamping units which are connected in series. Each first chain link clamping unit is used for clamping one tool handle. Each second chain link clamping unit is used for clamping one guide sleeve. The chain type tool magazine in the design can be used for storing the tool handle and the guide sleeve simultaneously. The spindle of the numerical control drilling machine can take and place the tool handle. The U-shaped guide sleeve fixed end of the numerical control drilling machine can take and place the guide sleeve.

Description

Technical Field

[0001] This application relates to the field of CNC drilling machine technology, and in particular to a chain-type tool magazine and a CNC drilling machine. Background Technology

[0002] In the field of deep hole machining, the tool holder of a CNC drilling machine is used to connect tools such as the drill gun. Since the drill gun has a large length-to-diameter ratio (that is, the ratio of the length dimension of the drill gun to the radial dimension of the drill gun), a guide sleeve is often needed to guide and position the drill gun during drilling operations to prevent the drill gun from deviating and improve the machining accuracy of the CNC drilling machine.

[0003] In related technologies, CNC drilling machines are usually equipped with two tool magazines. One tool magazine is used to store tool holders, and the spindle of the CNC drilling machine cooperates with this tool magazine to realize the spindle's loading and unloading of tool holders. The other tool magazine is used to store guide sleeves, and the fixed end of the CNC drilling machine's U-shaped guide sleeve cooperates with this other tool magazine to realize the fixed end of the CNC drilling machine's U-shaped guide sleeve's loading and unloading of guide sleeves. This design results in a high design cost for CNC drilling machines. Utility Model Content

[0004] This application provides a chain-type tool magazine and a CNC drilling machine, which can solve the problem of high design cost of CNC drilling machines in related technologies.

[0005] In a first aspect, embodiments of this application provide a chain-type tool magazine; the chain-type tool magazine is applied to a CNC drilling machine, the spindle of the CNC drilling machine is used to pick up and put down tool holders, and the fixed end of the U-shaped guide sleeve of the CNC drilling machine is used to pick up and put down guide sleeves. The chain-type tool magazine includes a frame, a drive wheel, at least two driven wheels, and a chain clamping mechanism. The drive wheel is located on one side of the bearing surface of the frame, and at least two driven wheels are installed on one side of the bearing surface of the frame. The at least two driven wheels are rotatably connected to the frame, and the rotation axes of the at least two driven wheels are arranged parallel to the rotation axis of the drive wheel. The chain clamping mechanism is connected to the drive wheel and the at least two driven wheels. The chain clamping mechanism includes a plurality of first chain link clamping units and a plurality of second chain link clamping units connected in series. Each first chain link clamping unit is used to clamp a tool holder, and each second chain link clamping unit is used to clamp a guide sleeve.

[0006] Secondly, embodiments of this application provide a CNC drilling machine; the CNC drilling machine includes a spindle for picking up and placing tool holders, a U-shaped guide sleeve fixing end for picking up and placing guide sleeves, and the aforementioned chain-type tool magazine.

[0007] Based on the chain-type tool magazine and CNC drilling machine of this application embodiment, by designing multiple first chain link clamping units and multiple second chain link clamping units connected in series, each first chain link clamping unit is used to clamp a tool holder, and each second chain link clamping unit is used to clamp a guide sleeve, thus enabling the chain-type tool magazine to simultaneously store tool holders and guide sleeves. The chain-type tool magazine cooperates with the spindle of the CNC drilling machine and the fixed end of the U-shaped guide sleeve to realize the loading and unloading of tool holders by the spindle of the CNC drilling machine, and the loading and unloading of guide sleeves by the fixed end of the U-shaped guide sleeve of the CNC drilling machine, thereby effectively reducing the design cost of the CNC drilling machine. By designing at least two drive wheels rotatably connected to the frame, the drive wheel, at least two drive wheels, and chain clamping mechanism are driven together. The rotation of the drive wheel drives the chain clamping mechanism connected to it to move, and the movement of the chain clamping mechanism drives the driven wheel connected to it to rotate, which reduces the friction between the chain and the driven wheel, reduces mechanical wear, and extends the service life of the driven wheel and the chain clamping mechanism. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is a schematic diagram of the part of the structure of the spindle gripping tool holder and the U-shaped guide sleeve fixed end gripping the guide sleeve in one embodiment of this application;

[0010] Figure 2 This is a partial structural schematic diagram of a CNC drilling machine in one embodiment of this application;

[0011] Figure 3 This is a schematic diagram of the chain-type tool magazine in one embodiment of this application;

[0012] Figure 4 This is a partial structural diagram of a chain-type tool magazine in one embodiment of this application;

[0013] Figure 5 This is a schematic diagram of the structure of the first link clamping unit clamping the tool holder and the second link clamping unit clamping the guide sleeve in one embodiment of this application;

[0014] Figure 6 This is a schematic diagram of the structure of the first link clamping unit clamping the tool handle and the second link clamping unit clamping the guide sleeve in one embodiment of this application;

[0015] Figure 7 This is a partially exploded structural diagram of a chain-type tool magazine in one embodiment of this application;

[0016] Figure 8 This is a schematic diagram of the structure in one embodiment of the present application, showing the driving wheel and two driven wheels mounted on the frame;

[0017] Figure 9 This is a schematic diagram of the chain-type tool magazine in one embodiment of this application from another perspective.

[0018] Reference numerals: 1. Chain-type tool magazine; 11. Frame; 111. Bearing plate; 111a. Bearing surface; 112. Base; 113. First guide rail; 114. Second guide rail; 115. Third guide rail; 116. Third groove; 12. Drive wheel; 121. First groove; 122. Slot; 13. Driven wheel; 131. Second groove; 14. Chain clamping mechanism; 14a. First chain link clamping unit; 14b. Second chain link clamping unit; 141. Chain link body; 1411. Chain link body; 1412. Connecting shaft; 14 13. Connecting sleeve; 14. First rolling element; 14. Second rolling element; 14. Clamping arm; 14. Elastic element; 14. Positioning flange; 14. Limiting pin; 14. Limiting block; 14. Locking bolt; 14. Positioning flange; 15. Drive motor; 16. Adjusting mechanism; 16. Adjusting guide rail; 16. Adjusting seat; 16. Fastening bolt; 2. Tool holder; 2a. Limiting groove; 2b. First positioning groove; 3. Guide sleeve; 3a. Second positioning groove; 4. Tool; 5. Spindle; 6. U-shaped guide sleeve fixing end. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0020] Please refer to Figures 1-4 As shown, in a first aspect, this application proposes a chain-type tool magazine 1, which is applied to a CNC drilling machine and can be used to store tool holders 2 and guide sleeves 3 at the same time, so as to realize the loading and unloading of tool holders 2 by the spindle 5 of the CNC drilling machine, and the loading and unloading of guide sleeves 3 by the U-shaped guide sleeve fixed end 6 of the CNC drilling machine.

[0021] like Figures 1-4 As shown, the chain-type tool magazine 1 includes a frame 11, a drive wheel 12, at least two driven wheels 13, and a chain clamping mechanism 14.

[0022] The frame 11 serves as the main frame of the chain-type tool magazine 1, supporting components such as the driven wheel 13. The specific material of the frame 11 is not limited here; designers can design it appropriately according to actual needs. For example, the frame 11 can be made of materials such as stainless steel or aluminum alloy, but is not limited to these materials.

[0023] The frame 11 has a bearing surface 111a, which is the surface on the frame 11 used to support components such as driven wheel 13. The bearing surface 111a can be a plane, a curved surface, or a combination of a plane and a curved surface.

[0024] The drive wheel 12 serves as a driving wheel and is connected to the motor shaft of the drive motor 15 (described below) of the chain-type tool magazine 1, so as to rotate under the drive of the drive motor 15. The drive wheel 12 is located on the side of the bearing surface 111a of the frame 11.

[0025] Driven wheel 13 acts as a drive wheel and rotates together with drive wheel 12 under the action of chain clamping mechanism 14. The number of driven wheels 13 is at least two. For example, the number of driven wheels 13 can be, but is not limited to, two, three, four, five, six or more.

[0026] At least two driven wheels 13 are installed on the side of the bearing surface 111a of the frame 11, at least two driven wheels 13 are rotatably connected to the frame 11, and the rotation axis of the at least two driven wheels 13 is arranged parallel to the rotation axis of the driving wheel 12.

[0027] The chain clamping mechanism 14 serves as a conveyor belt, connecting to the drive wheel 12 and at least two drive wheels to ensure synchronous rotation of the drive wheel 12 and at least two driven wheels 13. By designing at least two driven wheels 13 to be rotatably connected to the frame 11, the drive wheel 12 rotates under the action of the drive motor 15. This rotation of the drive wheel 12 drives the chain clamping mechanism 14, which in turn drives the driven wheels 13. This reduces friction between the chain and the driven wheels 13, minimizing mechanical wear and extending the service life of both the driven wheels 13 and the chain clamping mechanism 14.

[0028] On the other hand, the chain clamping mechanism 14 serves as a clamp for holding and fixing the tool holder 2 and the guide sleeve 3. The tool holder 2 is used to connect a tool 4 such as a drill gun. The chain clamping mechanism 14 includes a plurality of first chain link clamping units 14a and a plurality of second chain link clamping units 14b connected in series. Each first chain link clamping unit 14a is used to clamp a tool holder 2, and each second chain link clamping unit 14b is used to clamp a guide sleeve 3. It should be noted that multiple first link clamping units 14a and multiple second link clamping units 14b can be connected in series in a single alternating arrangement such as first link clamping unit 14a, second link clamping unit 14b, first link clamping unit 14a, second link clamping unit 14b, etc. Alternatively, multiple first link clamping units 14a and multiple second link clamping units 14b can be connected in series in a double alternating arrangement such as first link clamping unit 14a, first link clamping unit 14a, second link clamping unit 14b, second link clamping unit 14b, etc.

[0029] Based on the chain-type tool magazine 1 in this embodiment, multiple first-link clamping units 14a and multiple second-link clamping units 14b are designed in series. Each first-link clamping unit 14a is used to clamp a tool holder 2, and each second-link clamping unit 14b is used to clamp a guide sleeve 3. In this way, the chain-type tool magazine 1 can be used to store both the tool holder 2 and the guide sleeve 3 at the same time. The chain-type tool magazine 1 cooperates with the spindle 5 of the CNC drilling machine and the U-shaped guide sleeve fixing end 6 to realize the picking and placing of the tool holder 2 by the spindle 5 of the CNC drilling machine, and the picking and placing of the guide sleeve 3 by the U-shaped guide sleeve fixing end 6 of the CNC drilling machine. This can effectively reduce the design cost of the CNC drilling machine. By designing at least two drive wheels that are rotatably connected to the frame 11, and the drive wheel 12, at least two drive wheels, and chain clamping mechanism 14 are in transmission cooperation, the rotation of the drive wheel 12 drives the chain clamping mechanism 14 connected to it to move, and the movement of the chain clamping mechanism 14 drives the driven wheel 13 connected to it to rotate, which can reduce the friction between the chain and the driven wheel 13, reduce mechanical wear, and extend the service life of the driven wheel 13 and the chain clamping mechanism 14.

[0030] like Figures 5-6As shown, for each first link clamping unit 14a, each first link clamping unit 14a includes a link body 141, two clamping arms 142, and an elastic element 143. The two clamping arms 142 are rotatably connected to the link body 141; the elastic element 143 is located between the two clamping arms 142, and both ends of the elastic element 143 are connected to the two clamping arms 142 respectively. The two clamping arms 142 are adapted to clamp the tool holder 2 under the action of the elastic restoring force of the elastic element 143. It should be noted that when the two clamping arms 142 of the first link clamping unit 14a are not clamping the tool holder 2, the elastic element 143 is in a first compression state. When the two clamping arms 142 of the first link clamping unit 14a clamp the tool holder 2, the elastic element 143 is further compressed and is in a second compression state. The compression amount of the elastic element 143 in the second compression state is greater than the compression amount of the elastic element 143 in the first compression state. For the tool-grabbing operation of the CNC drilling machine spindle 5 (i.e., the CNC drilling machine spindle 5 grips the tool holder 2 from the two clamping arms 142 of the first link clamping unit 14a), the elastic element 143 changes from a second compression state to a first compression state; for the tool-releasing operation of the CNC drilling machine spindle 5 (i.e., the CNC drilling machine spindle 5 places the tool holder 2 onto the two clamping arms 142 of the first link clamping unit 14a), the elastic element 143 changes from a first compression state to a second compression state. The elastic element 143 can be a spring or a spring sheet. In this embodiment, the elastic element 143 is a spring, and the tail ends of the two clamping arms 142 are provided with positioning flanges 144, with the two ends of the spring respectively sleeved on the two positioning flanges 144.

[0031] Each first link clamping unit 14a also includes two limiting pins 145. The two limiting pins 145 are inserted into the link body 141, and the two limiting pins 145 are arranged one-to-one with the tail ends of the two adjacent clamping arms 142. When the elastic member 143 is in the first compressed state, the tail ends of the two clamping arms 142 abut against the two limiting pins 145 one-to-one.

[0032] It is understandable that the outer surface of the tool holder 2 is designed with a limiting groove 2a, and the spindle 5 of the CNC drilling machine is provided with a stop block (not shown in the figure) corresponding to the limiting groove 2a. When the tool holder 2 is assembled on the spindle 5 of the CNC drilling machine, the stop block extends into the limiting groove 2a of the tool holder 2, thus restricting the rotation of the tool holder 2 relative to the spindle 5 of the CNC drilling machine. Considering that the tool picking and putting operations of the spindle 5 of the CNC drilling machine are automated operations, in order to ensure that the spindle 5 of the CNC drilling machine can grasp the tool holder 2 at a preset angle, so that the limiting groove 2a on the tool holder 2 can be aligned with the stop block on the spindle 5 of the CNC drilling machine, so as to facilitate the assembly of the tool holder 2 on the spindle 5 of the CNC drilling machine, it is designed that, for the first link clamping unit 14a, each first link clamping unit 14a also includes a limiting block 146. The limiting block 146 is located between the two clamping arms 142 and is fixedly connected to the link body 141. When the tool holder 2 is clamped between the two clamping arms 142, a portion of the limiting block 146 extends into the limiting groove 2a to restrict the tool holder 2 from rotating relative to the two clamping arms 142. When the tool holder 2 is clamped on the two clamping arms 142, at least a portion of the limiting block 146 is embedded in the limiting groove 2a. The limiting block 146 abuts against the groove wall of the limiting groove 2a to restrict the tool holder 2 from rotating relative to the two clamping arms 142. This ensures that the tool holder 2 will not rotate relative to the two clamping arms 142 during the movement of the tool holder 2 following the first link clamping unit 14a, and also ensures that the tool holder 2 will not deflect during the subsequent gripping of the corresponding tool holder 2 by the spindle 5 of the CNC drilling machine according to the gripping command. This positions the tool holder 2 so that the spindle 5 of the CNC drilling machine can grip the tool holder 2 at a preset angle, allowing the limiting groove 2a of the tool holder 2 to align with the stop block on the spindle 5 of the CNC drilling machine, so as to facilitate the assembly of the tool holder 2 onto the spindle 5 of the CNC drilling machine.

[0033] Furthermore, the limiting block 146 is detachably connected to the chain link body 141. This allows for the replacement of the limiting block 146 with a matching size according to the actual size of the limiting groove 2a of the tool holder 2, thereby improving the practicality and applicability of the chain-type tool magazine 1. Specifically, in this embodiment, the limiting block 146 has a through hole, and the chain link body 141 has a threaded hole corresponding to the through hole. Each first chain link clamping unit 14a also includes a locking bolt 147, which passes through the through hole and is threadedly connected to the threaded hole to position the limiting block 146 on the chain link body 141. Thus, the locking bolt 147 can be rotated using a screwdriver or similar tool to install and remove the limiting block 146 from the chain link body 141. Of course, in other embodiments, the link body 141 may also have a corresponding locking hole, and each first link clamping unit 14a may also include a locking pin, which passes through the through hole and engages with the locking hole to position the limiting block 146 on the link body 141.

[0034] When the handle 2 is clamped between the two clamping arms 142, in order to enhance the clamping stability of the handle 2 by the two clamping arms 142, the outer side of the handle 2 is provided with a first locking groove 2b. The two clamping arms 142 of each first link clamping unit 14a are provided with locking flanges 148 on the surfaces that are in contact with the handle 2. When the handle 2 is clamped between the two clamping arms 142 of the first link clamping unit 14a, the locking flanges 148 engage with the first locking groove 2b. In this way, the clamping stability of the handle 2 by the two clamping arms 142 is enhanced by the contact between the locking flanges 148 and the groove wall of the first locking groove 2b.

[0035] like Figures 5-6 As shown, for each second link clamping unit 14b, each second link clamping unit 14b includes a link body 141, two clamping arms 142, and an elastic element 143. The two clamping arms 142 are rotatably connected to the link body 141; the elastic element 143 is located between the two clamping arms 142, and both ends of the elastic element 143 are connected to the two clamping arms 142 respectively. The two clamping arms 142 are adapted to clamp the guide sleeve 3 under the action of the elastic restoring force of the elastic element 143. It should be noted that when the two clamping arms 142 of the second link clamping unit 14b are not clamping the guide sleeve 3, the elastic element 143 is in a third compression state. When the two clamping arms 142 of the second link clamping unit 14b clamp the guide sleeve 3, the elastic element 143 is further compressed and is in a fourth compression state. The compression amount of the elastic element 143 in the fourth compression state is greater than the compression amount of the elastic element 143 in the third compression state. For the unloading operation of the U-shaped guide sleeve fixed end 6 of the CNC drilling machine (i.e., the U-shaped guide sleeve fixed end 6 of the CNC drilling machine grips the guide sleeve 3 from the two clamping arms 142 of the second link clamping unit 14b), the elastic element 143 changes from the fourth compression state to the third compression state; for the unloading operation of the U-shaped guide sleeve fixed end 6 of the CNC drilling machine (i.e., the U-shaped guide sleeve fixed end 6 of the CNC drilling machine places the guide sleeve 3 onto the two clamping arms 142 of the second link clamping unit 14b), the elastic element 143 changes from the third compression state to the fourth compression state. The elastic element 143 can be a spring or a spring sheet. In this embodiment, the elastic element 143 is a spring, and the tail ends of the two clamping arms 142 are provided with positioning flanges 144, with the two ends of the spring respectively sleeved on the two positioning flanges 144.

[0036] Each second link clamping unit 14b also includes two limiting pins 145. The two limiting pins 145 are inserted into the link body 141, and the two limiting pins 145 are arranged one-to-one with the tail ends of the two adjacent clamping arms 142. When the elastic member 143 is in the third compression state, the tail ends of the two clamping arms 142 abut against the two limiting pins 145 one-to-one.

[0037] When the guide sleeve 3 is clamped between the two clamping arms 142, in order to enhance the clamping stability of the guide sleeve 3 by the two clamping arms 142, the outer side of the guide sleeve 3 is provided with a second locking groove 3a. The two clamping arms 142 of each second link clamping unit 14b are provided with locking flanges 148 on the surfaces that are in contact with the guide sleeve 3. When the guide sleeve 3 is clamped between the two clamping arms 142 of the second link clamping unit 14b, the locking flanges 148 engage with the second locking groove 3a. In this way, the clamping stability of the guide sleeve 3 by the two clamping arms 142 is enhanced by the contact between the locking flanges 148 and the groove wall of the second locking groove 3a.

[0038] All first link clamping units 14a and all second link clamping units 14b are connected in series via link bodies 141. For example, for adjacent first link clamping units 14a and second link clamping units 14b, the link body 141 of the first link clamping unit 14a is connected in series with the link body 141 of the second link clamping unit 14b; for another example, for two adjacent first link clamping units 14a, the link body 141 of one first link clamping unit 14a is connected in series with the link body 141 of the other first link clamping unit 14a; and for yet another example, for two adjacent second link clamping units 14b, the link body 141 of one second link clamping unit 14b is connected in series with the link body 141 of the other second link clamping unit 14b. The link bodies 141 of all the first link clamping units 14a and the link bodies 141 of all the second link clamping units 14b are connected in series to form a chain, which is connected in drive to the aforementioned drive wheel 12 and the aforementioned at least two drive wheels.

[0039] like Figure 2 , Figure 7 and Figure 8 As shown, the frame 11 includes a support plate 111 and a base 112; the support plate 111 is triangular and has the aforementioned support surface 111a; the base 112 is connected to the side of the support plate 111 opposite to the support surface 111a to provide support for the support plate 111. There are two driven wheels 13, with the driving wheel 12 and the two driven wheels 13 located at the three corners of the support plate 111, and the two driven wheels 13 are rotatably connected to the support plate 111. The support plate 111 can be detachably fixed to the base 112 by means of screws, but is not limited to this method; alternatively, the support plate 111 can be non-detachably fixed to the base 112 by welding, but is not limited to this method. By designing the support plate 111 as a triangle, and designing the drive wheel 12 and two driven wheels 13 at the three corners of the triangular support plate 111, a three-sided transmission is formed, reducing the length of the chain tool magazine 1 so that it can cooperate with other modules in the CNC drilling machine to achieve a reasonable spatial layout.

[0040] The frame 11 also includes a first guide rail 113, a second guide rail 114, and a third guide rail 115 mounted on the support plate 111. The first guide rail 113 is located between the driving wheel 12 and one of its driven wheels 13, and extends along a first edge of the support plate 111. The second guide rail 114 is located between the driving wheel 12 and the other driven wheel 13, and extends along a second edge of the support plate 111. The third guide rail 115 is located between the two driven wheels 13, and extends along a third edge of the support plate 111. The specific connection method between the first guide rail 113 (or the second guide rail 114 or the third guide rail 115) and the support plate 111 is not limited here. Designers can make reasonable designs according to actual needs. For example, the first guide rail 113 (or the second guide rail 114 or the third guide rail 115) can be detachably and fixedly connected to the support plate 111 by at least one of the following methods: screw connection, snap connection or plug connection. For another example, the first guide rail 113 (or the second guide rail 114 or the third guide rail 115) can also be non-detachably and fixedly connected to the support plate 111 by riveting or welding, but not limited to this method.

[0041] The chain clamping mechanism 14 is also movably connected to the first guide rail 113, the second guide rail 114, and the third guide rail 115. The peripheral side of the drive wheel 12 is provided with a first groove 121, and the peripheral side of each of the two driven wheels 13 is provided with a second groove 131. The outer sides of the first guide rail 113, the second guide rail 114, and the third guide rail 115 are all provided with a third groove 116. The first groove 121 of the drive wheel 12 is connected to the third grooves 116 on both sides, and the second groove 131 of the driven wheel 13 is connected to the third grooves 116 on both sides.

[0042] like Figures 3-6 As shown, for each first link clamping unit 14a and each second link clamping unit 14b, the link body 141 includes a link body 1411, a connecting shaft 1412, a connecting sleeve 1413, a first rolling element 1414, and a second rolling element 1415. The connecting sleeve 1413 and the connecting shaft 1412 are respectively disposed on both sides of the link body 1411 along the movement direction of the chain clamping mechanism 14. Both the connecting sleeve 1413 and the connecting shaft 1412 are fixedly connected to the link body 1411. The first rolling element 1414 is connected to the link body 1411, and the second rolling element 1415 is coaxially arranged with and connected to the connecting shaft 1412. The first rolling element 1414 may be, but is not limited to, a roller or a rolling bearing, and the second rolling element 1415 may be, but is not limited to, a roller or a rolling bearing.

[0043] It is understandable that, taking the example of multiple first link clamping units 14a and multiple second link clamping units 14b connected in series in an alternating manner such as first link clamping unit 14a, second link clamping unit 14b, first link clamping unit 14a, second link clamping unit 14b, etc., the connecting sleeve 1413 of the link body 141 of the first link clamping unit 14a is sleeved on the connecting shaft 1412 of the link body 141 of the adjacent second link clamping unit 14b, and the connecting shaft 1412 of the link body 141 of the first link clamping unit 14a passes through the connecting sleeve 1413 of the link body 141 of another adjacent second link clamping unit 14b. In this way, the series connection between the first link clamping unit and the adjacent second link clamping unit 14b can be realized.

[0044] When the chain clamping mechanism 14 moves under the drive of the drive wheel 12, the first rolling element 1414 rolls in the first groove 121, the second groove 131 and the third groove 116, while the second rolling element 1415 rolls on the peripheral side of the driven wheel 13, the outer side of the first guide rail 113, the outer side of the second guide rail 114 and the outer side of the third guide rail 115. The peripheral side of the drive wheel 12 is provided with a groove 122 that is adapted to the second rolling element 1415. The second rolling element 1415 is engaged in the groove 122 on the peripheral side of the drive wheel 12 so that the driving force is transmitted to the entire chain clamping mechanism 14 through the second rolling element 1415, so that the chain clamping mechanism 14 moves under the drive of the drive wheel 12.

[0045] like Figure 9 As shown, the chain-type tool magazine 1 also includes a drive motor 15, the motor shaft of which is fixedly connected to the drive wheel 12. The chain-type tool magazine 1 also includes an adjustment mechanism 16, which is mounted on the side of the support plate 111 facing away from the support surface 111a. The drive motor 15 is mounted on the adjustment mechanism 16, which is configured to drive the drive motor 15 to move relative to the support plate 111, thereby tensioning the chain clamping mechanism 14 on the drive wheel 12. By designing the adjustment mechanism 16, the drive motor 15 is mounted on it, allowing the adjustment mechanism 16 to move the drive motor 15 relative to the support plate 111, adjusting the position of the drive wheel 12 connected to the motor shaft of the drive motor 15. This tensions the chain clamping mechanism 14, ensuring that the chain clamping mechanism 14 is always in a tensioned state and will not loosen or even disengage from the drive wheel 12 and / or the driven wheel 13, effectively guaranteeing that the chain clamping mechanism 14 can move normally under the action of the drive wheel 12.

[0046] Specifically, the adjustment mechanism 16 includes an adjustment guide rail 161, an adjustment seat 162, and a fastening bolt 163. The adjustment guide rail 161 is installed on the side of the bearing plate 111 away from the bearing surface 111a. The adjustment seat 162 is slidably connected to the adjustment guide rail 161. The drive motor 15 is installed on the adjustment seat 162. The adjustment seat 162 is moved relative to the adjustment guide rail 161 by manual adjustment so that the drive wheel 12 tensions the chain clamping mechanism 14. Then, the adjustment seat 162 is locked and fixed to the adjustment guide rail 161 by the fastening bolt 163.

[0047] Secondly, this application proposes a CNC drilling machine, which includes a spindle 5 for picking up and placing tool holders 2, a U-shaped guide sleeve fixing end 6 for picking up and placing guide sleeves 3, and the aforementioned chain-type tool magazine 1. The chain-type tool magazine 1 can simultaneously store tool holders 2 and guide sleeves 3. The spindle 5 and the U-shaped guide sleeve fixing end 6 of the CNC drilling machine cooperate with the chain-type tool magazine 1 to realize the picking up and placing of tool holders 2 by the spindle 5 of the CNC drilling machine, and the picking up and placing of guide sleeves 3 by the U-shaped guide sleeve fixing end 6 of the CNC drilling machine, thus effectively reducing the design cost of the CNC drilling machine.

[0048] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0049] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A chain-type tool magazine, characterized in that, Applied to a CNC drilling machine, the CNC drilling machine includes a spindle and a U-shaped guide sleeve fixed end, the spindle being used for picking up and placing tool holders, the U-shaped guide sleeve fixed end being used for picking up and placing guide sleeves; the chain-type tool magazine includes: The frame has a load-bearing surface; A drive wheel is located on the side of the frame where the bearing surface is located; At least two driven wheels are installed on one side of the bearing surface of the frame and are rotatably connected to the frame. The rotation axes of the at least two driven wheels are arranged parallel to the rotation axis of the driving wheel. A chain clamping mechanism is connected to the driving wheel and the at least two driven wheels. The chain clamping mechanism includes a plurality of first chain link clamping units and a plurality of second chain link clamping units connected in series. Each first chain link clamping unit is used to clamp one of the tool holders, and each second chain link clamping unit is used to clamp one of the guide sleeves.

2. The chain-type tool magazine as described in claim 1, characterized in that, Each of the first link clamping unit and each of the second link clamping units includes: The link body, all the first link clamping units and all the second link clamping units are connected in series through the link body; Two clamping arms are rotatably connected to the chain link body; An elastic element is located between the two clamping arms, and both ends of the elastic element are respectively connected to the two clamping arms. The two clamping arms are adapted to clamp the tool holder or the guide sleeve under the action of the elastic restoring force of the elastic element.

3. The chain-type tool magazine as described in claim 2, characterized in that, Each of the first link clamping units further includes a limiting block, which is located between the two clamping arms and is fixedly connected to the link body; The outer side of the handle is provided with a limiting groove. When the handle is clamped between the two clamping arms, part of the limiting block extends into the limiting groove to restrict the handle from rotating relative to the two clamping arms.

4. The chain-type tool magazine as described in claim 3, characterized in that, The limiting block is detachably connected to the chain link body; the limiting block is provided with a through hole, and the chain link body is provided with a threaded hole corresponding to the through hole. Each first chain link clamping unit also includes a locking bolt, which passes through the through hole and is threadedly connected to the threaded hole to position the limiting block on the chain link body.

5. The chain-type tool magazine as described in claim 2, characterized in that, The outer side of the knife handle is provided with a first locking groove, and the outer surface of the guide sleeve is provided with a second locking groove; The two clamping arms have locking flanges on their surfaces that contact the tool handle or the guide sleeve. When the tool handle is clamped between the two clamping arms of the first link clamping unit, the locking flange engages with the first locking groove. When the guide sleeve is clamped between the two clamping arms of the second link clamping unit, the locking flange engages with the second locking groove.

6. The chain-type tool magazine as described in any one of claims 1-5, characterized in that, The frame includes a support plate and a base. The support plate is triangular and has the support surface. The base is connected to the side of the support plate opposite to the support surface to provide support for the support plate. The number of driven wheels is two. The driving wheel and the two driven wheels are located at the three corners of the support plate, and the two driven wheels are rotatably connected to the support plate.

7. The chain-type tool magazine as described in claim 6, characterized in that, The frame further includes a first guide rail, a second guide rail, and a third guide rail mounted on the support plate. The first guide rail is located between the driving wheel and one of the driven wheels and extends along the first edge of the support plate. The second guide rail is located between the driving wheel and the other driven wheel and extends along the second edge of the support plate. The third guide rail is located between the two driven wheels and extends along the third edge of the support plate. The chain clamping mechanism is also movably connected to the first guide rail, the second guide rail, and the third guide rail.

8. The chain-type tool magazine as described in claim 7, characterized in that, The chain-type tool magazine also includes a drive motor, the motor shaft of which is fixedly connected to the drive wheel.

9. A CNC drilling machine, characterized in that, include: Spindle, used for loading and unloading tool holders; The U-shaped guide sleeve fixing end is used for picking up and putting down the guide sleeve; The chain-type tool magazine as described in any one of claims 1-8.

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