Machining center tool changing device

Abstract

The utility model relates to the technical field of machining centers, and provides a machining center tool changing device which comprises a connecting arm, a first inserting groove and a groove are formed in the two ends of the connecting arm respectively, tool changing mechanisms are installed at the two ends of the connecting arm respectively, each tool changing mechanism comprises a connecting mechanism, each connecting mechanism comprises an L-shaped block, and the L-shaped blocks are fixedly connected with the connecting arm. One side of the L-shaped block is installed in the groove through a bolt, a cutter buckling mechanism and a cutter clamping mechanism are installed in the L-shaped block, one side of the cutter clamping mechanism is installed in the first inserting groove, the cutter buckling mechanism is used for grabbing a cutter, the cutter clamping mechanism is used for clamping the cutter in the cutter buckling mechanism for the cutter, the L-shaped block is provided with a first through groove, and the first through groove is formed in the L-shaped block. And a groove body is formed in one side wall of the first through groove. According to the tool changing device, the tool changing device is of a modular structure and is easy to disassemble, when any module is abraded or damaged, the whole tool changing device does not need to be replaced, only damaged parts need to be replaced, maintenance cost and downtime are greatly reduced, and flexibility and practicability are high.

Description

Technical Field

[0001] The utility model relates to the technical field of machining centers, in particular to a tool changing device for a machining center. Background Art

[0002] In modern manufacturing, especially in the field of precision machining, machining centers play a vital role. These devices can perform a variety of complex cutting operations, significantly improving production efficiency and machining accuracy. Machining centers integrate multiple machining functions in one, such as milling, drilling, tapping, boring, etc., greatly reducing the need to transfer workpieces between different devices, not only shortening the machining cycle, but also significantly improving machining accuracy and surface quality, because it reduces the positioning errors that may be caused by multiple clamping.

[0003] A machining center requires a tool changing device when replacing tools. Traditional tool changing devices generally use a tool changing arm as the core component of the tool changing action. However, the tool changing arm of a traditional machining center is integrally formed and can only be replaced as a whole once damaged.

[0004] The utility model aims to solve the problem that the tool changing arm of a traditional machining center is integrally formed and can only be replaced as a whole once damaged, which leads to low practicality. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that the tool change arm of the traditional machining center is integrally formed and can only be replaced as a whole once damaged, which is of low practicality. The utility model adopts the following technical solutions:

[0006] A tool changing device for a machining center comprises a connecting arm, both ends of the connecting arm are provided with a first slot and a groove, and both ends of the connecting arm are provided with a tool changing mechanism;

[0007] The tool changing mechanism includes a connecting mechanism, which includes an L-shaped block, one side of the L-shaped block is installed in a groove by a bolt, a knife clamping mechanism and a knife locking mechanism are installed in the L-shaped block, one side of the knife locking mechanism is installed in a first slot, the knife clamping mechanism is used to grab the tool, and the knife locking mechanism is used to clamp the tool in the knife clamping mechanism.

[0008] A tool changing device for a machining center as described above, the L-shaped block is provided with a first through slot, a side wall of the first through slot is provided with a slot body, the tool clamping mechanism includes a sleeve, a frame body is slidably arranged in the sleeve, a convex block is fixedly connected to the top of the frame body, oblique slots are provided on both sides of the frame body, the frame body is provided with a third through slot, a sliding plate is provided in the third through slot, one end of the sliding plate is provided in the first through slot, both sides of the sliding plate are fixedly connected with a limiting block, the limiting block is arranged in the oblique slot and is slidably connected to the oblique slot, a partition is fixedly connected to the bottom of the frame body, a spring is fixedly connected to the bottom of the partition plate, a bottom plate is provided at the bottom of the spring, the bottom plate is fixedly connected to the frame body, the sliding plate is provided with a second slot, a cylinder body is fixedly connected to one side of the sliding plate, the inner cavity of the cylinder body is connected to the second slot, a third bolt is sleeved in the cylinder body, the third bolt is threadedly connected to the cylinder body, the cylinder body is arranged in the slot body, and a clamping head mechanism is installed in the second slot.

[0009] As described above, a tool changing device for a machining center, the clamping head mechanism includes a first plug block, the first plug block is arranged in a second slot and is slidably connected to the second slot, a third slot is opened at one end of the first plug block, a clamping block is slidably arranged in the third slot, the first plug block and the clamping block are both opened with a second threaded hole, a second bolt is sleeved in the second threaded hole, and the second bolt is threadedly connected to the second threaded hole.

[0010] In a tool changing device for a machining center as described above, the tool holding mechanism includes a tool holding member, a first sliding block is fixedly connected to one side of the tool holding member, a second through groove is formed in the L-shaped block, a first threaded hole is formed on one side of the L-shaped block, the first threaded hole is connected to the second through groove, a fourth bolt is sleeved in the first threaded hole, and the fourth bolt is threadedly connected to the first threaded hole.

[0011] In the tool changing device for a machining center as described above, both side walls of the first slot are provided with sliding grooves, a second sliding block is arranged in the sliding groove, and the second sliding block is fixedly connected to the sleeve.

[0012] In a tool changing device for a machining center as described above, a fourth through slot is provided at the bottom of the L-shaped block, the fourth through slot is connected to the first through slot, a connecting plate is slidably arranged in the fourth through slot, the top of the connecting plate is fixedly connected to the sliding plate, a connecting block is fixedly connected to the bottom of the L-shaped block, a first bolt is sleeved in the connecting block, and the first bolt is threadedly connected to the connecting block.

[0013] In the tool changing device for a machining center as described above, a first inclined section and a second inclined section are provided on one side of the clamping block.

[0014] In the tool changing device for a machining center as described above, the wide side of the groove body is shorter than the wide side of the first through groove.

[0015] In the tool changing device for a machining center as described above, one end of the fourth bolt is fixedly connected to a rubber pad.

[0016] In the tool changing device for a machining center as described above, a baffle is fixedly connected to one side of the connecting plate.

[0017] Implementing the embodiments of the utility model has the following beneficial effects:

[0018] 1. In the utility model, the tool changing device adopts a modular structure and is easy to disassemble. When any module is worn or damaged, it does not need to be replaced as a whole, but only the damaged parts need to be replaced, which greatly reduces the maintenance cost and downtime, and has strong flexibility and practicality.

[0019] 2. In the present invention, since the positions of the tool-locking member and the tool-clamping mechanism can be adjusted, the tool-changing device can adapt to the needs of different machining centers.

[0020] In summary, the utility model solves the problem that the tool changing arm of a traditional machining center is integrally formed and can only be replaced as a whole once damaged, which results in low practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. 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 creative work.

[0022] Figure 1 The utility model is a structural schematic diagram of a tool changing device for a machining center.

[0023] Figure 2 The utility model is a structural schematic diagram of a connecting arm of a tool changing device of a machining center.

[0024] Figure 3 It is a structural schematic diagram from another angle of a connecting arm of a tool changing device for a machining center of the utility model.

[0025] Figure 4 The utility model is a structural schematic diagram of a tool changing mechanism of a tool changing device for a machining center.

[0026] Figure 5 It is a structural schematic diagram from another angle of a tool changing mechanism of a tool changing device for a machining center of the utility model.

[0027] Figure 6The utility model is a structural schematic diagram of an L-shaped block of a tool changing device for a machining center.

[0028] Figure 7 It is a structural schematic diagram from another angle of an L-shaped block of a tool changing device for a machining center of the utility model.

[0029] Figure 8 The utility model is a structural schematic diagram of a tool-locking mechanism of a tool-changing device for a machining center.

[0030] Fig. 9 The utility model is a structural schematic diagram of a tool clamping mechanism of a tool changing device for a machining center.

[0031] Fig.10 The utility model is an exploded view of a tool clamping mechanism of a tool changing device of a machining center.

[0032] Fig.11 It is a structural schematic diagram of a tool changing device for a machining center of the utility model from another angle. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] like Figures 1 to 11 As shown, the utility model proposes a tool changing device for a machining center, comprising a connecting arm 1, both ends of the connecting arm 1 are provided with a first slot 101 and a groove 102, and both ends of the connecting arm 1 are installed with a tool changing mechanism 2;

[0035] The tool changing mechanism 2 includes a connecting mechanism 201, and the connecting mechanism 201 includes an L-shaped block 2011. One side of the L-shaped block 2011 is installed in the groove 102 by bolts. A tool holding mechanism 202 and a tool clamping mechanism 203 are installed in the L-shaped block 2011. One side of the tool clamping mechanism 203 is installed in the first slot 101. The tool holding mechanism 202 is used to grab the tool, and the tool clamping mechanism 203 is used to clamp the tool in the tool holding mechanism 202. The tool changing device adopts a modular structure and is easy to disassemble. Once the connecting mechanism 201 is damaged, the operator can quickly replace the pre-prepared connecting mechanism 201. Once the knife-locking mechanism 202 and the knife-clamping mechanism 203 are damaged, the operator can remove and install a new knife-locking mechanism 202 or knife-clamping mechanism 203 from the connecting mechanism 201. When any module is worn or damaged, there is no need to replace the entire module, only the damaged parts need to be replaced, which greatly reduces maintenance costs and downtime. Since the knife-locking mechanism 202 can be replaced, the tool changing device can adapt to tools of different sizes by replacing the knife-locking mechanism 202, and has strong flexibility and practicality.

[0036] Further, as a preferred embodiment of the present invention but not a limitation, the L-shaped block 2011 is provided with a first through slot 2012, a side wall of the first through slot 2012 is provided with a slot body 2013, the wide side of the slot body 2013 is shorter than the wide side of the first through slot 2012, the knife clamping mechanism 203 includes a sleeve 2031, a frame body 2034 is slidably arranged in the sleeve 2031, a protrusion 2033 is fixedly connected to the top of the frame body 2034, both sides of the frame body 2034 are provided with oblique grooves 2035, the frame body 2034 is provided with a third through slot 2039, a sliding plate 20311 is arranged in the third through slot 2039, one end of the sliding plate 20311 is arranged in the first through slot 2012, both sides of the sliding plate 20311 are fixedly connected to the limiting block 20310, the limiting block 2 0310 is arranged in the inclined groove 2035 and is slidably connected with the inclined groove 2035, the bottom of the frame 2034 is fixedly connected with a partition 2036, the bottom of the partition 2036 is fixedly connected with a spring 2037, the bottom of the spring 2037 is provided with a bottom plate 2038, the bottom plate 2038 is fixedly connected with the frame 2034, the sliding plate 20311 is provided with a second slot 20312, one side of the sliding plate 20311 is fixedly connected with a cylinder 20313, the inner cavity of the cylinder 20313 is connected with the second slot 20312, the cylinder 20313 is sleeved with a third bolt 20319, the third bolt 20319 is threadedly connected with the cylinder 20313, the cylinder 20313 is arranged in the groove body 2013, and the second slot 20312 is installed with a clamping head mechanism 20322. The first through slot 2012 and the slot body 2013 provide a track and guide for the movement of the knife clamping mechanism 203, thereby increasing the stability and controllability of the knife clamping mechanism 203. The range of motion of the frame 203 is controlled by the sleeve 2031. The frame moves downward by pressing the protrusion 203, and the entire knife release process is started. When the protrusion 203 is pressed, the frame 203 moves downward, the limit block 20310 is led by the inclined slot 2035 to slide to one side, the limit block 20310 leads the sliding plate 20311 to move to one side, and the sliding plate 20311 drives the clamping head mechanism 20322 to slide to one side. At this time, the knife clamping mechanism 203 releases the limit on the knife, and the knife can be taken out of the knife clamping mechanism 202. When the protrusion 203 loses its pressure, the spring 2037 resets and pushes the frame 2034 to move upward, and the sliding plate 20311 is pushed to reset by the limit block 20310. The sliding plate 20311 drives the clamping head mechanism 20322 to reset. The reset clamping head mechanism 20322 can clamp the tool to prevent the tool from slipping out of the tool clamping mechanism 202.

[0037] Further, as a preferred embodiment of the present invention but not a limitation, the clamping head mechanism 20322 includes a first plug block 20314, the first plug block 20314 is arranged in the second slot 20312 and is slidably connected to the second slot 20312, a third slot 20315 is opened at one end of the first plug block 20314, a clamping block 20316 is slidably arranged in the third slot 20315, the first plug block 20314 and the clamping block 20316 are both provided with a second threaded hole 20317, a second bolt 20318 is sleeved in the second threaded hole 20317, and the second bolt 20318 is threadedly connected to the second threaded hole 20317. The first insert block 20314 can slide in the second slot 20312, thereby driving the clamping block 20316 to move to one side, further extending the length of the entire clamping knife mechanism 203. After adjusting the length, the third bolt 20319 is screwed to make the third bolt 20319 press the first insert block 20314, thereby fixing the entire clamping head mechanism 20322. Since the position of the clamping head mechanism 2032 is adjustable, it can match with the clamping knife mechanism 202 of different designs. Even after the clamping knife mechanism 202 is replaced, the clamping knife mechanism 203 can still effectively clamp the tool without additional replacement or major adjustment, greatly improving the versatility and ease of use of the tool changing device of the machining center. The connection between the clamping block 20316 and the first insert block 20314 can be released by screwing out the second bolt 20318, so that it is convenient for the operator to replace the clamping block 20316.

[0038] Further, as a preferred embodiment of the present invention but not limiting, the knife-clamping mechanism 202 includes a knife-clamping member 2021, one side of which is fixedly connected with a first slider 2022, the L-shaped block 2011 is provided with a second through slot 2018, one side of which is provided with a first threaded hole 2017, the first threaded hole 2017 is connected with the second through slot 2018, a fourth bolt 204 is sleeved in the first threaded hole 2017, and the fourth bolt 204 is threadedly connected with the first threaded hole 2017. The design of the first slider 202 can realize that the position of the knife-clamping member 2021 is adjustable, and the first slider 202 will drive the knife-clamping member 2021 to move when sliding in the second through slot 2018. Since the positions of the knife-clamping member 2021 and the knife-clamping mechanism 203 can be adjusted, the tool changing device can adapt to the needs of different machining centers. When the fourth bolt 204 is screwed out, the first sliding block 2022 loses its pressure, and the knife buckling mechanism 202 and the connecting mechanism 201 can be taken out at this time, which is convenient for loading and unloading.

[0039] Further, as a preferred embodiment of the present invention but not limiting, both side walls of the first slot 101 are provided with a slide groove 103, a second slider 2032 is provided in the slide groove 103, and the second slider 2032 is fixedly connected to the sleeve 2031. The second slider 2032 cooperates with the slide groove 103 to limit the sleeve 2031 in the first slot 101, thereby enhancing the stability of the knife clamping mechanism 203.

[0040] Further, as a preferred embodiment of the present invention but not limited thereto, a fourth through slot 2014 is provided at the bottom of the L-shaped block 2011, the fourth through slot 2014 is connected to the first through slot 2012, a connecting plate 20321 is slidably arranged in the fourth through slot 2014, the top of the connecting plate 20321 is fixedly connected to the sliding plate 20311, a baffle 20320 is fixedly connected to one side of the connecting plate 20321, a connecting block 2015 is fixedly connected to the bottom of the L-shaped block 2011, a first bolt 2016 is sleeved in the connecting block 2015, and the first bolt 2016 is threadedly connected to the connecting block 2015. When the machining center program is wrong, the tool changer will stop changing tools. At this time, if the tool changer is to be continued, the tool changer needs to be reset. If there is a tool in the tool changer, it will hinder the tool changer from being reset. For the sake of tool and safety, the spring force used by the transmission tool clamping mechanism 203 is relatively large, and it is difficult to remove the tool from the tool changer. By screwing the first bolt 2016, the first bolt 2016 moves to one side, and the first bolt 2016 pushes the connecting plate 20321 to move to one side, and the connecting plate 20321 drives the sliding plate 20311 to move in the direction of the frame 2034, and the sliding plate 20311 drives the frame 2034 to move downward through the limit block 20310, thereby achieving the effect of pressing the protrusion 2033 to drive the frame 2034 to move downward, and when the sliding plate 20311 moves to one side, it drives the clamping head mechanism 20322 to move to one side, so that the clamping head mechanism 20322 loses its clamping force on the tool. At this time, the tool can be easily taken out of the tool changing device, and the whole operation is simple and convenient.

[0041] Further, as a preferred embodiment of the present invention but not limiting, a first inclined section 20323 and a second inclined section 20324 are provided on one side of the block 20316. The design of the first inclined section 20323 and the second inclined section 20324 can provide guidance for the tool when the tool enters or is removed from the tool locking mechanism 202.

[0042] Further, as a preferred embodiment of the present invention but not limiting, one end of the fourth bolt 204 and the third bolt 20319 are both fixedly connected with a rubber pad. The rubber pad can protect the contact surface between the fourth bolt 204 and the third bolt 20319 and other components, thereby protecting the fourth bolt 204 and the third bolt 20319 and the components in contact therewith from wear, and the rubber pad can strengthen the friction between the fourth bolt 204 and the third bolt 20319 and other components.

[0043] The implementation method of the first embodiment is as follows:

[0044] A tool changing device for a machining center comprises a connecting arm 1, both ends of the connecting arm 1 are provided with a first slot 101 and a groove 102, and both ends of the connecting arm 1 are provided with a tool changing mechanism 2;

[0045] The tool changing mechanism 2 includes a connecting mechanism 201, which includes an L-shaped block 2011. One side of the L-shaped block 2011 is installed in the groove 102 by bolts. A tool holding mechanism 202 and a tool clamping mechanism 203 are installed in the L-shaped block 2011. One side of the tool clamping mechanism 203 is installed in the first slot 101. The tool holding mechanism 202 is used to grab the tool, and the tool clamping mechanism 203 is used to clamp the tool in the tool holding mechanism 202. The tool changing device adopts a modular structure and is easy to disassemble. Once the connecting mechanism 201 is damaged, the operator can quickly replace the pre-prepared connecting mechanism 201. Once the knife-locking mechanism 202 and the knife-clamping mechanism 203 are damaged, the operator can remove and install a new knife-locking mechanism 202 or knife-clamping mechanism 203 from the connecting mechanism 201. When any module is worn or damaged, there is no need to replace the entire module, only the damaged parts need to be replaced, which greatly reduces maintenance costs and downtime. Since the knife-locking mechanism 202 can be replaced, the tool changing device can adapt to tools of different sizes by replacing the knife-locking mechanism 202, and has strong flexibility and practicality.

[0046] The L-shaped block 2011 is provided with a first through slot 2012, a slot body 2013 is provided on one side wall of the first through slot 2012, the wide side of the slot body 2013 is shorter than the wide side of the first through slot 2012, the knife clamping mechanism 203 includes a sleeve 2031, a frame body 2034 is slidably provided in the sleeve 2031, a protrusion 2033 is fixedly connected to the top of the frame body 2034, oblique slots 2035 are provided on both sides of the frame body 2034, a third through slot 2039 is provided in the third through slot 2039, a sliding plate 20311 is provided in the third through slot 2039, one end of the sliding plate 20311 is provided in the first through slot 2012, both sides of the sliding plate 20311 are fixedly connected with limiting blocks 20310, and the limiting blocks 20310 are provided in the oblique slot 203 5 and is slidably connected with the inclined groove 2035, a partition plate 2036 is fixedly connected to the bottom of the frame 2034, a spring 2037 is fixedly connected to the bottom of the partition plate 2036, a bottom plate 2038 is arranged at the bottom of the spring 2037, the bottom plate 2038 is fixedly connected with the frame 2034, a second slot 20312 is opened on the sliding plate 20311, a cylinder 20313 is fixedly connected to one side of the sliding plate 20311, the inner cavity of the cylinder 20313 is communicated with the second slot 20312, a third bolt 20319 is sleeved in the cylinder 20313, the third bolt 20319 is threadedly connected with the cylinder 20313, the cylinder 20313 is arranged in the groove body 2013, and a clamping head mechanism 20322 is installed in the second slot 20312. The first through slot 2012 and the slot body 2013 provide a track and guide for the movement of the knife clamping mechanism 203, thereby increasing the stability and controllability of the knife clamping mechanism 203. The range of motion of the frame 203 is controlled by the sleeve 2031. The frame moves downward by pressing the protrusion 203, and the entire knife release process is started. When the protrusion 203 is pressed, the frame 203 moves downward, the limit block 20310 is led by the inclined slot 2035 to slide to one side, the limit block 20310 leads the sliding plate 20311 to move to one side, and the sliding plate 20311 drives the clamping head mechanism 20322 to slide to one side. At this time, the knife clamping mechanism 203 releases the limit on the knife, and the knife can be taken out of the knife clamping mechanism 202. When the protrusion 203 loses its pressure, the spring 2037 resets and pushes the frame 2034 to move upward, and the sliding plate 20311 is pushed to reset by the limit block 20310. The sliding plate 20311 drives the clamping head mechanism 20322 to reset. The reset clamping head mechanism 20322 can clamp the tool to prevent the tool from slipping out of the tool clamping mechanism 202.

[0047] The clamping head mechanism 20322 includes a first plug block 20314, which is arranged in the second slot 20312 and is slidably connected to the second slot 20312. A third slot 20315 is provided at one end of the first plug block 20314, and a clamping block 20316 is slidably provided in the third slot 20315. Both the first plug block 20314 and the clamping block 20316 are provided with a second threaded hole 20317, and a second bolt 20318 is sleeved in the second threaded hole 20317, and the second bolt 20318 is threadedly connected to the second threaded hole 20317. The first insert block 20314 can slide in the second slot 20312, thereby driving the clamping block 20316 to move to one side, further extending the length of the entire clamping knife mechanism 203. After adjusting the length, the third bolt 20319 is screwed to make the third bolt 20319 press the first insert block 20314, thereby fixing the entire clamping head mechanism 20322. Since the position of the clamping head mechanism 2032 is adjustable, it can match with the clamping knife mechanism 202 of different designs. Even after the clamping knife mechanism 202 is replaced, the clamping knife mechanism 203 can still effectively clamp the tool without additional replacement or major adjustment, greatly improving the versatility and ease of use of the tool changing device of the machining center. The connection between the clamping block 20316 and the first insert block 20314 can be released by screwing out the second bolt 20318, so that it is convenient for the operator to replace the clamping block 20316.

[0048] The knife-locking mechanism 202 includes a knife-locking member 2021, one side of which is fixedly connected with a first slider 2022, a second through slot 2018 is provided on the L-shaped block 2011, a first threaded hole 2017 is provided on one side of the L-shaped block 2011, the first threaded hole 2017 is connected with the second through slot 2018, a fourth bolt 204 is sleeved in the first threaded hole 2017, and the fourth bolt 204 is threadedly connected with the first threaded hole 2017. The design of the first slider 202 can realize the adjustable position of the knife-locking member 2021. When the first slider 202 slides in the second through slot 2018, it will drive the knife-locking member 2021 to move. Since the positions of the knife-locking member 2021 and the knife-locking mechanism 203 can be adjusted, the tool-changing device can adapt to the needs of different machining centers. When the fourth bolt 204 is screwed out, the first slider 2022 loses its pressure, and the knife-locking mechanism 202 and the connecting mechanism 201 can be taken out at this time, which is convenient for loading and unloading.

[0049] The two side walls of the first slot 101 are provided with a slide groove 103, in which a second slider 2032 is arranged, and the second slider 2032 is fixedly connected to the sleeve 2031. The second slider 2032 cooperates with the slide groove 103 to limit the sleeve 2031 in the first slot 101, thereby enhancing the stability of the knife clamping mechanism 203.

[0050] A first inclined section 20323 and a second inclined section 20324 are provided on one side of the clamping block 20316. The design of the first inclined section 20323 and the second inclined section 20324 can provide guidance for the tool when the tool enters the knife buckling mechanism 202 or is removed from the knife buckling mechanism 202.

[0051] One end of the fourth bolt 204 and the third bolt 20319 are both fixedly connected with a rubber pad. The rubber pad can protect the contact surface between the fourth bolt 204 and the third bolt 20319 and other components, thereby protecting the fourth bolt 204 and the third bolt 20319 and the components in contact therewith from wear, and at the same time, the rubber pad can strengthen the friction between the fourth bolt 204 and the third bolt 20319 and other components.

[0052] The implementation method of the second embodiment is as follows:

[0053] The difference between Example 2 and Example 1 lies in that a fourth through slot 2014 is provided at the bottom of the L-shaped block 2011, the fourth through slot 2014 is communicated with the first through slot 2012, a connecting plate 20321 is slidably provided in the fourth through slot 2014, the top of the connecting plate 20321 is fixedly connected to the sliding plate 20311, a baffle 20320 is fixedly connected to one side of the connecting plate 20321, a connecting block 2015 is fixedly connected to the bottom of the L-shaped block 2011, a first bolt 2016 is sleeved in the connecting block 2015, and the first bolt 2016 is threadedly connected to the connecting block 2015.

[0054] Specifically, when a program error occurs in the machining center, the tool changing device will stop changing tools. If you want to continue changing tools at this time, you need to return the tool changing device to its original position. If there is a tool in the tool changing device, it will hinder the tool changing device from returning to its original position. For reasons of tool and safety, the spring force used in the transmission tool clamping mechanism 203 is relatively large, making it difficult to remove the tool from the tool changing device.

[0055] In this embodiment, by screwing the first bolt 2016, the first bolt 2016 moves to one side, and the first bolt 2016 pushes the connecting plate 20321 to move to one side, and the connecting plate 20321 drives the sliding plate 20311 to move in the direction of the frame 2034, and the sliding plate 20311 drives the frame 2034 to move downward through the limit block 20310, thereby achieving the effect of the pressing protrusion 2033 driving the frame 2034 to move downward, and when the sliding plate 20311 moves to one side, it drives the clamping head mechanism 20322 to move to one side, so that the clamping head mechanism 20322 loses its clamping force on the tool. At this time, the tool can be easily taken out of the tool changing device, and the whole operation is simple and convenient, with little difficulty.

[0056] Specifically, the working principle of the present invention is as follows:

[0057] The tool changer is installed in the machining center. When the tool needs to be replaced, the machining center controls the tool changer to move upward. When moving upward, the protrusion 2033 is pressed, so that the frame 2034 moves downward. This action guides the limit block 20310 and the sliding plate 20311 to slide in a specific direction through the inclined groove 2035, thereby driving the clamping head mechanism 20322 to move sideways to release the clamping state of the tool. With the side movement of the clamping head mechanism 20322, the tool is no longer restricted by the clamping mechanism, and can be easily taken out of the clamping mechanism 202 at this time. The clamping mechanism 202 on the other side can easily clamp the tool. The machining center further controls the tool changer to move downward, so that the tools on both sides are clamped. After the machining center controls the tool changer to rotate 180 degrees, the positions of the tools on both sides are reversed. The machining center controls the tool changer to move upward, and the tools on both sides are released. The tool on one side enters the tool magazine, and the tool on the other side enters the machining mechanism, thereby realizing tool change.

[0058] The tool changing device adopts a modular structure and is easy to disassemble. Once the connecting mechanism 201, the knife-locking mechanism 202 and the knife-clamping mechanism 203 are damaged, the operator can remove them from the connecting mechanism 201 and install new ones, without the need to replace the entire mechanism, but only to replace the damaged parts, which greatly reduces the maintenance cost and downtime. Since the knife-locking mechanism 202 can be replaced, the tool changing device can adapt to tools of different sizes by replacing the knife-locking mechanism 202, and has strong flexibility and practicality.

[0059] The first insert block 20314 can slide in the second slot 20312, thereby driving the clamping block 20316 to move to one side, further extending the length of the entire clamping knife mechanism 203. After adjusting the length, the third bolt 20319 is screwed to make the third bolt 20319 press the first insert block 20314, thereby fixing the entire clamping head mechanism 20322. Since the position of the clamping head mechanism 2032 is adjustable, it can match with the clamping knife mechanism 202 of different designs. Even after the clamping knife mechanism 202 is replaced, the clamping knife mechanism 203 can still effectively clamp the tool without additional replacement or major adjustment, greatly improving the versatility and ease of use of the tool changing device of the machining center. The connection between the clamping block 20316 and the first insert block 20314 can be released by screwing out the second bolt 20318, so that it is convenient for the operator to replace the clamping block 20316.

[0060] Since the positions of the knife clamping member 2021 and the knife clamping mechanism 203 can be adjusted, the tool changing device can adapt to the needs of different machining centers. When the fourth bolt 204 is screwed out, the first slider 2022 loses pressure, and the knife clamping mechanism 202 and the connecting mechanism 201 can be taken out at this time, which is convenient for loading and unloading.

[0061] In summary, the utility model solves the problem that the tool changing arm of a traditional machining center is integrally formed and can only be replaced as a whole once damaged, which results in low practicality.

[0062] It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but such information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the "first" information may also be referred to as the "second" information, and similarly, the "second" information may also be referred to as the "first" information. In addition, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0063] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. A tool changing device for a machining center, characterized in that: It comprises a connecting arm (1), both ends of the connecting arm (1) are provided with a first slot (101) and a groove (102), and both ends of the connecting arm (1) are provided with a tool changing mechanism (2); The tool changing mechanism (2) comprises a connecting mechanism (201), the connecting mechanism (201) comprising an L-shaped block (2011), one side of the L-shaped block (2011) being mounted in a groove (102) via a bolt, a tool holding mechanism (202) and a tool clamping mechanism (203) being mounted in the L-shaped block (2011), one side of the tool clamping mechanism (203) being mounted in a first slot (101), the tool holding mechanism (202) being used to grab a tool, and the tool clamping mechanism (203) being used to clamp a tool in the tool holding mechanism (202).

2. A tool changing device for a machining center according to claim 1, characterized in that: The L-shaped block (2011) is provided with a first through slot (2012), a slot body (2013) is provided on one side wall of the first through slot (2012), the knife clamping mechanism (203) comprises a sleeve (2031), a frame body (2034) is slidably provided in the sleeve (2031), a convex block (2033) is fixedly connected to the top of the frame body (2034), and oblique slots (2033) are provided on both sides of the frame body (2034). 35), the frame (2034) is provided with a third through slot (2039), a sliding plate (20311) is arranged in the third through slot (2039), one end of the sliding plate (20311) is arranged in the first through slot (2012), both sides of the sliding plate (20311) are fixedly connected to limit blocks (20310), the limit blocks (20310) are arranged in the inclined slot (2035) and are slidably connected to the inclined slot (2035), a partition (2036) is fixedly connected to the bottom of the frame (2034), a spring (2037) is fixedly connected to the bottom of the partition (2036), a bottom plate (2038) is arranged at the bottom of the spring (2037), and the bottom plate (2038) is fixedly connected to the frame (2034), the sliding plate (20311) is provided with a second slot (20312), one side of the sliding plate (20311) is fixed A cylinder (20313) is connected, the inner cavity of the cylinder (20313) is connected to the second slot (20312), a third bolt (20319) is sleeved in the cylinder (20313), the third bolt (20319) is threadedly connected to the cylinder (20313), the cylinder (20313) is arranged in the slot body (2013), and a clamping head mechanism (20322) is installed in the second slot (20312).

3. A tool changing device for a machining center according to claim 2, characterized in that: The clamping head mechanism (20322) comprises a first plug block (20314), the first plug block (20314) is arranged in a second slot (20312) and is slidably connected to the second slot (20312), a third slot (20315) is provided at one end of the first plug block (20314), a clamping block (20316) is slidably provided in the third slot (20315), the first plug block (20314) and the clamping block (20316) are both provided with a second threaded hole (20317), a second bolt (20318) is sleeved in the second threaded hole (20317), and the second bolt (20318) is threadedly connected to the second threaded hole (20317).

4. A tool changing device for a machining center according to claim 1, characterized in that: The knife-locking mechanism (202) comprises a knife-locking member (2021), one side of the knife-locking member (2021) is fixedly connected to a first sliding block (2022), the L-shaped block (2011) is provided with a second through slot (2018), one side of the L-shaped block (2011) is provided with a first threaded hole (2017), the first threaded hole (2017) is connected to the second through slot (2018), a fourth bolt (204) is sleeved in the first threaded hole (2017), and the fourth bolt (204) is threadedly connected to the first threaded hole (2017).

5. A tool changing device for a machining center according to claim 2, characterized in that: Both side walls of the first slot (101) are provided with sliding grooves (103), a second sliding block (2032) is arranged in the sliding groove (103), and the second sliding block (2032) is fixedly connected to the sleeve (2031).

6. A tool changing device for a machining center according to claim 2, characterized in that: A fourth through slot (2014) is provided at the bottom of the L-shaped block (2011), the fourth through slot (2014) is connected to the first through slot (2012), a connecting plate (20321) is slidably arranged in the fourth through slot (2014), the top of the connecting plate (20321) is fixedly connected to the sliding plate (20311), a connecting block (2015) is fixedly connected to the bottom of the L-shaped block (2011), a first bolt (2016) is sleeved in the connecting block (2015), and the first bolt (2016) is threadedly connected to the connecting block (2015).

7. A tool changing device for a machining center according to claim 3, characterized in that: A first inclined section (20323) and a second inclined section (20324) are provided on one side of the clamping block (20316).

8. A tool changing device for a machining center according to claim 2, characterized in that: The wide side of the groove body (2013) is shorter than the wide side of the first through groove (2012).

9. A tool changing device for a machining center according to claim 4, characterized in that: One end of each of the fourth bolts (204) is fixedly connected to a rubber pad.

10. A tool changing device for a machining center according to claim 6, characterized in that: A baffle (20320) is fixedly connected to one side of the connecting plate (20321).

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