Multifunctional tool setting and clamping device for milling cutter remanufacturing

Abstract

The invention discloses a multifunctional tool setting and clamping device for milling cutter remanufacturing, relates to the technical field of milling cutter machining, and solves the problems of large repeated positioning error, low remanufacturing precision, long auxiliary time and low machining efficiency caused by separation of clamping and tool setting procedures in the prior art. The device comprises a workbench and a clamp arranged on the workbench, the clamp comprises a three-jaw chuck and a control piece used for driving the three-jaw chuck to grab materials, the clamp is provided with a tool setting reference block located on the three-jaw chuck, the tool setting reference block is provided with a reference surface for finish machining, and the reference surface and the clamping center of the three-jaw chuck have a determined and known control position relation; an adjusting assembly is arranged between the workbench and the clamp and used for adjusting the positions of the datum plane and the clamping center of the three-jaw chuck. The tool nose positioning device has the advantages that repeated positioning errors caused by switching between a clamp and a tool setting gauge and secondary clamping in the prior art are avoided, and the accuracy of tool nose position data is guaranteed from the source.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of machining milling cutter, and particularly relates to a multifunctional tool setting and clamping device for milling cutter remanufacturing. BACKGROUND

[0002] In the manufacturing field, as a key cutting tool, the milling cutter is remanufactured (i.e., the large milling cutter is modified into a small milling cutter) instead of being scrapped after wear, which is an important measure to practice green manufacturing and reduce costs.

[0003] At present, the existing milling cutter remanufacturing process includes the following steps: firstly, an operator needs to clamp the waste milling cutter in a special clamp (such as a spring chuck or a V-shaped block), and then performs preliminary alignment and clamping outside or on the machine tool; subsequently, in order to accurately establish the position of the milling cutter in the machine tool coordinate system, the clamped milling cutter needs to be moved to an independent tool setting instrument for reference measurement, and this process usually needs to be adjusted repeatedly, and even clamped twice, to complete the tool setting.

[0004] However, the separated operation mode of "clamping first and then tool setting" has the following problems: the conversion, movement and re-clamping of the milling cutter between the clamp and the tool setting instrument may inevitably introduce a repeated positioning error, which directly reduces the remanufacturing accuracy when the positioning error is large, and affects the cutting performance of the remanufactured milling cutter; in addition, the additional tool setting step increases the auxiliary time, resulting in low processing efficiency. Therefore, there is an urgent need for a multifunctional tool setting and clamping device for milling cutter remanufacturing to avoid secondary clamping, so as to achieve high-precision and high-efficiency milling cutter remanufacturing. SUMMARY

[0005] In order to improve the problems of large repeated positioning error, low remanufacturing accuracy, long auxiliary time and low processing efficiency caused by the separation of the clamping and tool setting processes in the prior art, the present application provides a multifunctional tool setting and clamping device for milling cutter remanufacturing.

[0006] The present application provides a multifunctional tool setting and clamping device for milling cutter remanufacturing, which adopts the following technical scheme:

[0007] A multifunctional tool setting and clamping device for milling cutter remanufacturing, comprising a workbench and a clamp arranged on the workbench,

[0008] The clamp comprises a three-jaw chuck and a control member for driving the three-jaw chuck to grab the material, and a tool setting reference block is arranged on the three-jaw chuck, the tool setting reference block is provided with a precisely processed reference surface, and the reference surface has a determined and known control position relationship with the clamping center of the three-jaw chuck;

[0009] An adjusting assembly is arranged between the workbench and the clamp, and the adjusting assembly is used to adjust the position of the reference surface and the clamping center of the three-jaw chuck.

[0010] Preferably, the reference surfaces on the tool setting reference block include mutually perpendicular axial reference surfaces and radial reference surfaces. The axial reference surface is used to calibrate the axial length of the end mill, and the radial reference surface is used to calibrate the radial radius of the end mill.

[0011] Preferably, the adjustment assembly includes mutually perpendicular X-axis adjustment rails and Y-axis adjustment rails. The X-axis adjustment rail is located on the top of the worktable, and the Y-axis adjustment rail is located on top of the X-axis adjustment rail. Both the X-axis and Y-axis adjustment rails are equipped with driving components. By fine-tuning the X-axis and Y-axis adjustment rails, the relative position between the reference plane and the rotation center of the three-jaw chuck spindle can be precisely set.

[0012] Preferably, the driving component includes a motor, a screw driven by the motor, and a moving block threadedly engaged with the screw. The output shaft of the motor is coaxial with and fixedly connected to the screw. The two screws are rotatably connected to the worktable and the X-axis adjustment guide rail, respectively. The two moving blocks are fixedly connected to the X-axis adjustment guide rail and the Y-axis adjustment guide rail, respectively.

[0013] Preferably, the three-jaw chuck includes jaws, and the tool setting reference block is detachably connected to the jaws.

[0014] Preferably, the three-jaw chuck includes a threaded disc on the end face, and the threads on the back of the three jaws are respectively engaged with the threaded disc on the end face; the top of the Y-axis adjusting guide rail is provided with a mounting seat for mounting the clamp; the control component includes a worm gear fixed coaxially with the threaded disc on the end face and a worm shaft rotatably connected to the mounting seat; the mounting seat is provided with a connecting seat for mounting the worm gear; the worm gear is engaged with the worm shaft, and the worm gear and the worm shaft satisfy the self-locking condition.

[0015] Preferably, the connecting seat is fixedly connected to the mounting seat by bolts and washers, and the mounting seat has an arc-shaped first adjustment groove, in which the bolts are slidably connected to adjust the installation angle of the connecting seat.

[0016] The mounting base includes a connecting cylinder that fully accommodates the worm gear, the worm gear being rotatably connected inside the connecting cylinder. The mounting base is provided with a fixed cylinder coaxially arranged with the connecting cylinder. The connecting cylinder is fixed to the fixed cylinder by bolts. The connecting cylinder has a second adjusting groove with the same diameter as the first adjusting groove, and the second adjusting groove is also arc-shaped. The peripheral arms of the connecting cylinder and the fixed cylinder are respectively provided with clearance openings for meshing connection of the worm gear.

[0017] In summary, this application includes at least one of the following beneficial effects:

[0018] 1. This application integrates the clamping station and the tool setting station by directly setting the tool setting reference block on the three-jaw chuck that holds the milling cutter. After the milling cutter is clamped once, the tool setting can be completed directly through the reference surface. This avoids the repeated positioning errors caused by the conversion between the fixture and the tool setting device and the secondary clamping in the prior art. It ensures the accuracy of the tool tip position data from the source and lays a solid foundation for high-precision remanufacturing.

[0019] 2. This application also combines the multiple steps of "clamping-alignment-moving to tool setter-tool setting-secondary clamping-machining" in the prior art into three steps of "clamping-tool setting-machining". During machining, there is no need to repeatedly move and adjust the workpiece between the machine tool and the tool setter, which greatly shortens the auxiliary time and effectively improves the overall machining efficiency.

[0020] 3. This application also uses the X-axis and Y-axis adjusting guide rails and their driving components (such as motor-screw mechanism) to precisely fine-tune the entire fixture unit (including the three-jaw chuck and reference block), which can accurately set the relative position of the tool setting reference surface and the rotation center of the machine tool spindle on the machine tool. This is equivalent to establishing a high-precision, resettable process reference for the entire remanufacturing system, ensuring the consistency of the tool setting reference during batch processing. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this embodiment of the application;

[0022] Figure 2 This is a schematic diagram of the connection between the clamp and the adjustment assembly in this embodiment of the application;

[0023] Figure 3 This is a schematic diagram of the connection between the fixture and the mounting base in this embodiment of the application;

[0024] Figure 4 yes Figure 2 A schematic diagram of the cross-section at point AA.

[0025] Explanation of reference numerals in the attached drawings: 1. Worktable; 2. Fixture; 21. Three-jaw chuck; 211. Jaw; 3. Control component; 4. Tool setting reference block; 5. Adjustment assembly; 51. X-axis adjustment guide rail; 52. Y-axis adjustment guide rail; 6. Drive component; 61. Motor; 62. Screw; 7. Mounting base; 71. First adjustment slot; 72. Connecting cylinder; 721. Second adjustment slot; 73. Fixed cylinder; 8. Worm gear; 811. Handwheel; 9. Connecting base; 10. Clearance opening. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0027] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0028] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0029] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain circumstances to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0030] In addition, the term "multiple" should mean two or more.

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] This application discloses a multifunctional tool setting and clamping device for milling cutter remanufacturing, comprising a worktable 1 and a clamp 2 disposed on the worktable 1. The clamp 2 includes a three-jaw chuck 21 and a control component 3 for driving the three-jaw chuck 21 to grasp materials. A tool setting reference block 4 is provided on the three-jaw chuck 21 in the clamp 2. The tool setting reference block 4 has a precision-machined reference surface, and the reference surface has a defined and known control positional relationship with the clamping center of the three-jaw chuck 21. By integrating the reference surface and clamping function into the clamp 2, and associating it with the machine tool coordinate system through a precise two-dimensional adjustment platform, secondary clamping is completely avoided, thereby improving the problem of large positioning errors.

[0033] Specifically, the reference surfaces on the tool setting reference block 4 include mutually perpendicular axial reference surfaces and radial reference surfaces. The axial reference surface is used to calibrate the axial length of the milling cutter, and the radial reference surface is used to calibrate the radial radius of the milling cutter.

[0034] Furthermore, the three-jaw chuck 21 includes jaws 211. When the tool setting reference block 4 is detachable, it is fixed to the jaws 211 of the three-jaw chuck 21 by locating pins and fastening screws. In practical applications, reference blocks of different shapes or sizes can be replaced according to different types of end mills to facilitate machining.

[0035] Furthermore, a precision adjustment assembly 5 is provided between the worktable 1 and the fixture 2 to adjust the position of the reference plane relative to the clamping center of the three-jaw chuck 21. The adjustment assembly 5 includes mutually perpendicular X-axis adjustment rails 51 and Y-axis adjustment rails 52. The X-axis adjustment rail 51 is slidably connected to the top of the worktable 1, and the Y-axis adjustment rail 52 is slidably connected to the top of the X-axis adjustment rail 51. To achieve automated precision fine-tuning, both the X-axis adjustment rail 51 and the Y-axis adjustment rail 52 are equipped with driving components 6. Through the fine-tuning of the X-axis adjustment rails 51 and the Y-axis adjustment rails 52, the relative position of the reference plane and the rotation center of the spindle of the three-jaw chuck 21 is precisely set.

[0036] Specifically, the driving component 6 includes a motor 61, a screw 62 driven by the motor 61, and a moving block threadedly engaged with the screw 62. The output shaft of the motor 61 is coaxial with and fixedly connected to the screw 62. The two screws 62 are rotatably connected to the worktable 1 and the X-axis adjusting guide rail 51, respectively. The two moving blocks are fixedly connected to the X-axis adjusting guide rail 51 and the Y-axis adjusting guide rail 52, respectively. By controlling the rotation of the motor 61, the entire upper structure can be driven to make precise displacements in the XY plane, with a positioning accuracy down to the micrometer level.

[0037] Furthermore, the three-jaw chuck 21 includes a threaded disc on the end face (this is prior art and not shown in the figure), and the threads on the back of the three jaws 211 respectively engage with the threaded disc on the end face. The top of the Y-axis adjusting guide rail 52 is provided with a mounting seat 7 for mounting the clamp 2. The control component 3 includes a turbine 8 coaxially fixed with the threaded disc on the end face and a worm gear 81 rotatably connected to the mounting seat 7. The mounting seat 7 is provided with a connecting seat 9 for mounting the turbine 8. In addition, the three-jaw chuck 21 is also mounted on the connecting seat 9. A handwheel 811 is fixed to one end of the worm gear 81. The turbine 8 is engaged with the worm gear 81, and the turbine 8 and the worm gear 81 meet the self-locking condition. During machining, the operator can drive the turbine 8 through the worm gear 81 by turning the handwheel 81, thereby smoothly and accurately controlling the synchronous movement of the jaws 211 to achieve centering and clamping of the remanufactured milling cutter. The self-locking characteristic ensures the reliable maintenance of the clamping force during machining.

[0038] Furthermore, the connecting seat 9 is fixedly connected to the mounting seat 7 by bolts and washers. The mounting seat 7 has an arc-shaped first adjustment groove 71. By sliding and locking the bolt in the adjustment groove, the connecting seat 9 can be rotated at a small angle in the horizontal plane to adjust and fix the installation angle of the connecting seat 9, while simultaneously adjusting the installation angle of the three-jaw chuck 21 in the horizontal plane.

[0039] Mounting base 7 includes a connecting sleeve 72 that fully accommodates the worm gear 81, and the connecting sleeve 72 passes through the connecting base 9. The worm gear 81 is rotatably connected inside the connecting sleeve 72. Mounting base 7 has a fixed sleeve 73 coaxial with the connecting sleeve 72, and the connecting sleeve 72 is fixed to the fixed sleeve 73 by bolts. The peripheral arms of the connecting sleeve 72 and the fixed sleeve 73 are respectively provided with clearance openings 10 for meshing connection of the worm gear 81 and the turbine 8. The connecting sleeve 72 is provided with a second adjusting groove 721 of the same diameter as the first adjusting groove 71. The second adjusting groove 721 is also arc-shaped. The sliding and locking of the bolts in the second adjusting groove 721 is used to adjust the mounting angle of the three-jaw chuck 21.

[0040] The general workflow of a multifunctional tool setting and clamping device for milling cutter remanufacturing in this application is as follows:

[0041] Initial system calibration: After installing this device on the machine tool's worktable 1, use its adjustment component 5 to move and adjust the position of the entire fixture 2; make the radial reference surface and axial reference surface of the tool setting reference block 4 precisely aligned with the theoretical rotation center of the machine tool spindle. This process is only a one-time or periodic calibration operation.

[0042] Integrated clamping and tool setting: The used milling cutter is loaded into the three-jaw chuck 21 and clamped. Then, the machine tool spindle is moved to bring the probe into contact with the radial and axial reference surfaces of the tool setting reference block 4, respectively. Based on the contact signals and known preset position parameters, the machine tool CNC system can automatically and accurately calculate the actual position of the milling cutter tip in the machine tool coordinate system, thus completing the tool setting.

[0043] High-efficiency and precise remanufacturing: After tool setting, the machine tool can immediately begin the remanufacturing grinding program without any pause or reclamping. Because the remanufactured milling cutter is always in a single clamping state throughout the entire process from tool setting to machining, the repeated positioning error is fundamentally eliminated, achieving a balance between high precision and high efficiency.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multifunctional tool setting and clamping device for milling cutter remanufacturing, comprising a workbench (1) and a clamp (2) arranged on the workbench (1), characterized in that: the clamp (2) comprises a three-jaw chuck (21) and a control member (3) for driving the three-jaw chuck (21) to grab materials, and a tool setting reference block (4) is arranged on the three-jaw chuck (21); the tool setting reference block (4) is provided with a finely processed reference surface, and the reference surface has a determined and known control position relationship with the clamping center of the three-jaw chuck (21); an adjusting assembly (5) is arranged between the workbench (1) and the clamp (2), and the adjusting assembly (5) is used for adjusting the position of the reference surface and the clamping center of the three-jaw chuck (21). The reference surface on the tool setting reference block (4) comprises an axial reference surface and a radial reference surface which are perpendicular to each other, the axial reference surface is used for calibrating the axial length of the milling cutter, and the radial reference surface is used for calibrating the radial radius of the milling cutter. The adjusting assembly (5) comprises X-direction adjusting guide rails (51) and Y-direction adjusting guide rails (52) which are perpendicular to each other, the X-direction adjusting guide rails (51) are arranged on the top of the workbench (1), the Y-direction adjusting guide rails (52) are arranged on the top of the X-direction adjusting guide rails (51), and the X-direction adjusting guide rails (51) and the Y-direction adjusting guide rails (52) are both provided with driving members (6); the relative position of the reference surface and the main shaft rotation center of the three-jaw chuck (21) is accurately set through fine adjustment of the X-direction adjusting guide rails (51) and the Y-direction adjusting guide rails (52).

2. The multi-functional tool setting and holding device for reconditioning of milling cutters as claimed in claim 1, wherein: The driving member (6) comprises a motor (61), screw rods (62) driven by the motor (61), and moving blocks threadedly matched with the screw rods (62); the output shaft of the motor (61) is coaxial and fixedly connected with the screw rods (62), the two screw rods (62) are respectively rotationally connected with the workbench (1) and the X-direction adjusting guide rails (51), and the two moving blocks are respectively fixedly connected with the X-direction adjusting guide rails (51) and the Y-direction adjusting guide rails (52).

3. The multi-functional tool setting and holding device for cutter remanufacturing according to claim 1, characterized in that: The three-jaw chuck (21) comprises jaws (211), and the tool setting reference block (4) is detachably connected with the jaws (211).

4. The multi-functional tool setting and holding device for cutter remanufacturing according to claim 3, characterized in that: The three-jaw chuck (21) comprises an end face threaded disc, and the threads on the back surfaces of the three jaws (211) are respectively meshingly connected with the end face threaded disc; the top of the Y-direction adjusting guide rails (52) is provided with a mounting seat (7) for mounting the clamp (2), the control member (3) comprises a turbine (8) fixedly arranged coaxially with the end face threaded disc and a worm (81) rotationally connected with the mounting seat (7), the mounting seat (7) is provided with a connecting seat (9) for mounting the turbine (8), the turbine (8) is meshingly connected with the worm (81), and the turbine (8) and the worm (81) satisfy self-locking conditions.

5. The multi-functional tool setting and holding device for cutter remanufacturing according to claim 1, characterized in that: The connecting seat (9) is fixedly connected with the mounting seat (7) through bolts and gaskets, the mounting seat (7) is provided with an arc-shaped first adjusting groove (71), and the bolts are slidably connected in the first adjusting groove (71) to adjust the mounting angle of the connecting seat (9).

6. The multi-functional tool setting and holding device for milling cutter remanufacturing according to claim 5, characterized in that: ​ 7. The multi-functional tool setting and holding device for cutter remanufacturing according to claim 6, characterized in that: ​ The mounting base (7) comprises a connecting cylinder (72) which completely accommodates a worm (81), the worm (81) is rotationally connected in the connecting cylinder (72), the mounting base (7) is provided with a fixed cylinder (73) coaxially arranged with the connecting cylinder (72), the connecting cylinder (72) is fixed to the fixed cylinder (73) by bolts, the connecting cylinder (72) is provided with a second adjusting groove (721) with the same diameter as the first adjusting groove (71), the second adjusting groove (721) is also arc-shaped, and the circumferential sides of the connecting cylinder (72) and the fixed cylinder (73) are respectively provided with avoiding openings (10) for meshing connection of the worm (81) of the turbine (8).

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