Boring tool positioning and clamping device and tool changing device

Abstract

The utility model relates to the technical field of cutter replacing equipment, in particular to a boring cutter positioning and clamping device and a cutter replacing device. The boring cutter positioning and clamping device comprises a cutter bearing part, an anti-rotation positioning part and a plurality of cutter clamping mechanisms, the cutter bearing part is used for bearing a cutter handle of a boring cutter, and the cutter clamping mechanisms are used for clamping the cutter handle of the boring cutter; the cutter clamping mechanisms are circumferentially arranged on the outer side of the cutter handle in a surrounding mode, each cutter clamping mechanism comprises a clamping piece, an elastic piece and a fastening piece, and the end, away from the elastic piece, of the clamping piece is used for abutting against the groove; the anti-rotation positioning piece is arranged on the cutter bearing piece and used for being clamped with the anti-rotation groove. The boring cutter positioning and clamping device achieves positioning, placing and clamping of a large-diameter boring cutter, when the boring cutter positioning and clamping device is applied to a numerical control machine tool, automatic replacement of the cutter can be achieved, manpower resources are saved, potential safety hazards are greatly reduced, and production and machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tool replacement equipment, in particular to a boring tool positioning and clamping device and a tool changing device. Background Art

[0002] CNC machine tool is the abbreviation of digital control machine tool, which is an automated machine tool equipped with a program control system. The control system can logically process programs specified by control codes or other symbolic instructions, decode them, express them in coded numbers, and input them into the CNC device through information carriers. After calculation and processing, the CNC device sends various control signals to control the movement of the machine tool and automatically process the parts according to the shape and size required by the drawing.

[0003] CNC machining centers are equipped with tool magazines and automatic tool changing functions. The equipment can be automatically changed through CNC code control. However, existing boring tools are often large in size, such as the BT50 large-diameter boring tool. The tool magazine load diameter, manipulator grabbing weight, tool length and tool change diameter of CNC machining centers have strict technical requirements. In particular, if the tool size exceeds the size requirements of the equipment, it will cause mechanical collisions and cause damage to the equipment and tools. This makes it impossible for large-size boring tools to achieve automatic tool change through the program control system, and manual tool change is required.

[0004] Manual tool replacement often requires first adjusting the CNC equipment to manual mode, pressing the tool release button to loosen the spindle grip, then manually inserting the tool into the spindle, and pressing the tool clamp button to tighten the spindle grip. The installation and disassembly steps are very cumbersome, so it takes a lot of time and effort to replace the tool, and the replacement speed is slow, which affects production efficiency. In addition, most fixtures have poor fixation on the tool and are prone to danger. That is, manual tool replacement not only increases the labor force, but also brings safety hazards, machines and other disadvantages.

[0005] Therefore, there is an urgent need for a device that can realize the replacement of large-size boring tools. Utility Model Content

[0006] In order to solve the above technical problems existing in the prior art, the utility model provides a boring tool positioning and clamping device and a tool changing device.

[0007] The technical solution of the utility model to solve the above technical problems is as follows:

[0008] The first aspect of the utility model is to provide a boring tool positioning and clamping device, wherein the boring tool comprises a tool handle, and the tool handle is provided with a groove and an anti-rotation groove;

[0009] It comprises a tool bearing member, an anti-rotation positioning member and a plurality of tool clamping mechanisms, wherein the tool bearing member is used to bear the tool handle of the boring tool, and the tool clamping mechanism is used to clamp the tool handle of the boring tool;

[0010] A plurality of groups of tool clamping mechanisms are circumferentially arranged on the outside of the tool handle, each group of tool clamping mechanisms comprises a clamping member, an elastic member and a fastener arranged in sequence, and the end of the clamping member away from the elastic member is used to abut against the groove of the tool handle;

[0011] The anti-rotation positioning member is arranged on the tool bearing member and is used for engaging with the anti-rotation groove of the tool handle.

[0012] The boring tool positioning and clamping device provided by the utility model has the following beneficial effects:

[0013] The boring tool positioning and clamping device provided by the utility model realizes the positioning, placement and clamping of the large diameter boring tool by designing the tool clamping mechanism, the tool bearing member and the anti-rotation positioning member, especially by cooperating the clamping member, the elastic member and the fastener. When it is applied to a CNC machine tool, the tool can be automatically replaced, which saves human resources, greatly reduces safety hazards and improves production and processing efficiency.

[0014] On the basis of the above technical solution, the present invention can also make the following technical improvements:

[0015] Furthermore, the number of the tool clamping mechanisms is two, and the two tool clamping mechanisms are symmetrically arranged on both sides of the tool handle.

[0016] The beneficial effect of adopting the above further technical solution is that: through the two symmetrically arranged clamping mechanisms, the clamping force on the shank of the boring tool is balanced, the boring tool is prevented from being offset due to excessive or insufficient clamping force on one side, and the positioning and clamping of the tool are ensured.

[0017] Further, the anti-rotation positioning member is detachably connected to the tool carrier, and one end of the anti-rotation positioning member protrudes from the tool carrier.

[0018] The beneficial effect of adopting the above further technical solution is that one end of the anti-rotation positioning member protrudes from the tool carrier, which can achieve maximum engagement between the anti-rotation positioning member and the anti-rotation groove on the tool handle, thereby preventing the boring tool from rotating and achieving positioning of the boring tool.

[0019] Furthermore, the anti-rotation positioning member is a T-shaped structural member.

[0020] The beneficial effect of adopting the above-mentioned further technical solution is that the anti-rotation positioning member adopts a T-shaped structural member, which can ensure the maximum engagement between the anti-rotation positioning member and the anti-rotation groove on the tool handle and the stable connection between the anti-rotation positioning member and the tool carrier, while saving materials.

[0021] Furthermore, the tool carrier is a concave structural member, and the arc surface of the concave structural member is matched with the outer wall of the tool handle.

[0022] The beneficial effect of adopting the above-mentioned further technical solution is that by setting the tool carrier as a concave structural part with a curved surface, and the shape and diameter of the curved surface are adapted to the diameter of the tool handle, precise positioning and carrying of the boring tool can be achieved, and tool carriers of different sizes can be changed according to different types of tools, with a wide range of applications.

[0023] Furthermore, the tool carrier comprises a first boss and a second boss, and the two tool clamping mechanisms are respectively arranged on the first boss and the second boss.

[0024] The beneficial effect of adopting the above further technical solution is: balancing the clamping force on the tool handle of the boring tool, preventing the boring tool from shifting due to excessive or insufficient clamping force on one side, and ensuring the positioning and clamping of the tool.

[0025] Furthermore, the tool clamping mechanism further comprises a tool clamping seat, and the two tool clamping seats are detachably connected to the first boss and the second boss respectively;

[0026] The tool clamping seat is provided with a through hole, the clamping member, the elastic member and the fastener are arranged in the through hole, and the end of the clamping member away from the elastic member protrudes out of the through hole.

[0027] The beneficial effect of adopting the above further technical solution is that the clamping member, the elastic member and the fastener are all arranged in the tool clamping seat, which further ensures that the axis of the clamping member is located at the center of the groove, thereby improving the clamping effect of the clamping member on the tool.

[0028] The second aspect of the utility model is to provide a boring tool changing device, comprising any one of the boring tool positioning and clamping devices described above.

[0029] On the basis of the above technical solution, the present invention can also make the following technical improvements:

[0030] Furthermore, the number of the boring tool positioning and clamping device is at least one.

[0031] Furthermore, it also includes a fixed bracket, and the boring tool positioning and clamping device is detachably connected to the fixed bracket.

[0032] The boring tool changing device can realize the installation of multiple boring tool positioning and clamping devices on a numerical control machine tool in sequence, making it easy to replace tools.

[0033] Compared with the prior art, the utility model has the following technical effects:

[0034] The boring tool positioning and clamping device provided by the utility model is applied to a boring tool changing device and a CNC machine tool. When the tool is replaced, the tool can be automatically replaced, which saves human resources, greatly reduces safety hazards, and improves production and processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of the structure of a boring tool is shown;

[0036] Figure 2 A schematic structural diagram of an embodiment of a boring tool positioning and clamping device of the utility model is shown;

[0037] Figure 3 A schematic structural diagram of a boring tool positioning and clamping device for clamping a boring tool is shown;

[0038] Figure 4 A front view of a boring tool positioning clamping device holding a boring tool is shown;

[0039] Figure 5 The schematic diagram of the structure of the tool clamping mechanism of the utility model is shown;

[0040] Figure 6 A schematic structural diagram of an embodiment of a boring tool changing device of the utility model is shown;

[0041] Figure 7 A schematic structural diagram showing another angle of an embodiment of a boring tool changing device of the utility model;

[0042] Reference numerals:

[0043] 1. BT50 large diameter boring tool; 11. Tool handle; 12. Groove; 13. Anti-rotation groove;

[0044] 2. tool carrier; 21. first boss; 22. second boss; 23. arc surface;

[0045] 3. Anti-rotation positioning parts;

[0046] 4. Tool clamping mechanism; 41. Clamping member; 42. Elastic member; 43. Fastener; 44. Tool clamping seat;

[0047] 5. Fix the bracket; 51. Fix the bolt. DETAILED DESCRIPTION

[0048] The following is an explanation of the implementation of the present invention by specific specific embodiments. Those skilled in the art can easily understand other advantages and functions of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to this implementation. On the contrary, the purpose of introducing the utility model in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0049] The boring tool positioning and clamping device provided by the utility model is used for positioning, clamping and supporting the boring tool. Taking the BT50 large diameter boring tool as an example, the structure of the boring tool is described. Figure 1 The BT50 large diameter boring tool 1 comprises a shank 11, which is a cylindrical structure. The shank 11 is provided with an annular groove 12 and an anti-rotation groove 13, wherein the groove 12 is a trapezoidal groove.

[0050] See also Figure 2-5 An embodiment of a boring tool positioning and clamping device provided by the utility model comprises a tool carrier 2, an anti-rotation positioning member 3 and several groups of tool clamping mechanisms 4, wherein the tool carrier 2 is used to carry a tool handle 11, and the tool clamping mechanism 4 is used to clamp the tool handle 11; several groups of tool clamping mechanisms 4 are circumferentially arranged on the outside of the tool handle 11, and the circumferential angle does not exceed 180° to ensure the smooth installation of the tool; in this embodiment, two groups of tool clamping mechanisms are provided, and the two groups of tool clamping mechanisms 4 are symmetrically arranged on both sides of the tool handle 11, and each group of tool clamping mechanisms 4 includes a clamping member 41, an elastic member 42 and a fastener 43 arranged in sequence, and the end of the clamping member 41 away from the elastic member 42 abuts against the groove 12; the anti-rotation positioning member 3 is arranged on the tool carrier 2 and engages with the anti-rotation groove 13.

[0051] Optionally, the clamping member 41 is a clamping pin, the elastic member 42 is a compression spring, and the fastener 43 is an inner hole retaining spring. The clamping pin, the compression spring, and the inner hole retaining spring are connected in sequence, one end of the compression spring abuts against the inner wall of the inner hole retaining spring, and the other end abuts against the clamping pin.

[0052] When the boring tool positioning and clamping device provided by the utility model is applied to the installation and placement of large-size boring tools, as the boring tool falls, the boring tool first contacts the clamping pin, and the clamping pins on both sides are squeezed by the tool handle 11, the compression spring is compressed, and the clamping pins retreat to both sides to release space, so that the boring tool is sufficient to continue to fall until the anti-rotation positioning member 3 is engaged and fixed with the anti-rotation groove 13. At this time, the anti-rotation positioning member 3 plays an anti-rotation positioning role for the tool, and the tool falls to the lower limit position. At this time, the tool carrier 2 supports the tool, and the compression spring loses pressure and rebounds, so that the clamping pin pops out and returns to the initial position, thereby abutting against the center of the groove 12, locking the tool handle 11, and realizing the clamping and axial positioning of the tool.

[0053] Optionally, the anti-rotation positioning member 3 can be detachably connected to the tool carrier 2, and one end of the anti-rotation positioning member 3 protrudes from the tool carrier 2, so that the anti-rotation positioning member 3 can be engaged with the anti-rotation groove 13 on the tool handle 11 to the greatest extent, thereby preventing the boring tool from rotating and achieving the positioning of the boring tool.

[0054] Optionally, the anti-rotation positioning member 3 is a T-shaped structural member, the horizontal portion of the T-shaped structural member is detachably connected to the tool carrier 2, and the vertical portion protrudes from the tool carrier 2, which can ensure the maximum engagement between the anti-rotation positioning member 3 and the anti-rotation groove 13 on the tool handle 11 and the stable connection between the anti-rotation positioning member 3 and the tool carrier 2, while saving materials.

[0055] Optionally, the tool carrier 2 is a concave structural component, and the tool carrier 2 includes a first boss 21 and a second boss 22 that are relatively arranged, and a concave arc surface 23 arranged between the first boss 21 and the second boss 22, and the arc surface 23 is adapted to the cylindrical outer wall of the tool handle 11 so as to better carry the tool and achieve precise positioning of the tool.

[0056] Optionally, the two tool clamping mechanisms 4 are respectively arranged on the first boss 21 and the second boss 22, and are detachably connected to the first boss 21 and the second boss 22. By symmetrically arranging the two tool clamping mechanisms 4 on the two bosses, the clamping force on the tool handle 11 is balanced, and the tool handle 11 is prevented from being offset due to excessive or insufficient clamping force on one side, thereby ensuring the positioning and clamping of the tool.

[0057] Optionally, the tool clamping mechanism 4 further includes a tool clamping seat 44, and the two tool clamping seats 44 are detachably connected to the first boss 21 and the second boss 22 respectively;

[0058] The tool clamping seat 44 is provided with a through hole, and the clamping pin, compression spring, and inner hole retaining spring are arranged in the through hole, and the end of the clamping pin away from the compression spring extends out of the through hole to abut against the groove 12, thereby ensuring the clamping and positioning of the tool handle 11; wherein, the inner hole retaining spring plays an axial fixing role in the through hole, and when the compression spring is compressed, the inner hole retaining spring is prevented from axial displacement; Figure 5 As shown, a limit plate is fixedly provided at the end of the clamping pin in contact with the compression spring, and the diameter of the limit plate is larger than the diameter of the clamping pin. The through hole is a stepped through hole, and the diameter of the stepped through hole cooperates with the clamping pin and the limit plate to limit the clamping pin.

[0059] The detachable connections between the above components are all achieved through bolt connections to ensure the reliability of the connection and the convenience of disassembly.

[0060] The boring tool changing device provided by the utility model comprises at least one of the above-mentioned boring tool positioning and clamping devices. When the number of boring tool positioning and clamping devices is not one, the boring tool positioning and clamping devices are arranged in sequence. In actual use, each boring tool is first placed on the boring tool positioning and clamping device. The bottom of the tool carrier 2, that is, the end away from the arc surface 13, is provided with bolts. The boring tool positioning and clamping device is installed on the equipment workbench or the CNC machine tool fixture by bolts, or the boring tool positioning and clamping device is installed on the fixed bracket 5 by bolts, and then the fixed bracket 5 is installed on the equipment workbench by fixing bolts 51.

[0061] like Figure 6-7 As shown, a specific implementation is shown, wherein the fixed bracket 5 is a fixed height-increasing bracket, which plays the role of fixing, connecting and heightening to avoid collision between the tool and the equipment workbench.

[0062] Optionally, the fixing bolt 51 is an M20 bolt to improve the fastening force.

[0063] The high-precision boring tool positioning and clamping device with a self-locking function provided by the utility model integrates positioning and clamping. It is applied to a CNC machine tool processing center and can continuously realize automatic tool replacement under the condition that the tool exceeds the technical requirements of the equipment. The device is simple to use, simple to manufacture and low in cost. The device can be used on a vertical machining center, a horizontal machining center and a CNC milling machine and is widely used.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A boring tool positioning and clamping device, the boring tool comprising a tool handle, the tool handle being provided with a groove and an anti-rotation groove; characterized in that: It comprises a tool bearing member, an anti-rotation positioning member and a plurality of tool clamping mechanisms, wherein the tool bearing member is used to bear the tool handle of the boring tool, and the tool clamping mechanism is used to clamp the tool handle of the boring tool; A plurality of groups of tool clamping mechanisms are circumferentially arranged on the outside of the tool handle, each group of tool clamping mechanisms comprises a clamping member, an elastic member and a fastener arranged in sequence, and the end of the clamping member away from the elastic member is used to abut against the groove of the tool handle; The anti-rotation positioning member is arranged on the tool bearing member and is used for engaging with the anti-rotation groove of the tool handle.

2. The boring tool positioning and clamping device according to claim 1, characterized in that: The number of the tool clamping mechanisms is two, and the two tool clamping mechanisms are symmetrically arranged on both sides of the tool handle.

3. The boring tool positioning and clamping device according to claim 1, characterized in that: The anti-rotation positioning member is detachably connected to the tool carrier, and one end of the anti-rotation positioning member protrudes from the tool carrier.

4. The boring tool positioning and clamping device according to claim 3, characterized in that: The anti-rotation positioning member is a T-shaped structural member.

5. The boring tool positioning and clamping device according to claim 2, characterized in that: The tool bearing member is a concave structural member, and the arc surface of the concave structural member is matched with the outer wall of the tool handle.

6. The boring tool positioning and clamping device according to claim 5, characterized in that: The tool carrier comprises a first boss and a second boss, and the two tool clamping mechanisms are respectively arranged on the first boss and the second boss.

7. The boring tool positioning and clamping device according to claim 6, characterized in that: The tool clamping mechanism further comprises a tool clamping seat, and two tool clamping seats are detachably connected to the first boss and the second boss respectively; The tool clamping seat is provided with a through hole, the clamping member, the elastic member and the fastener are arranged in the through hole, and the end of the clamping member away from the elastic member protrudes out of the through hole.

8. A boring tool changing device, characterized in that: The invention comprises a boring tool positioning and clamping device as described in any one of claims 1 to 7.

9. The boring tool changing device according to claim 8, characterized in that: The number of the boring tool positioning and clamping device is at least one.

10. The boring tool changing device according to claim 8 or 9, characterized in that: It also includes a fixed bracket, and the boring tool positioning and clamping device is detachably connected to the fixed bracket.

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