Milling machine rotating shaft positioning chuck and anti-falling protective sleeve

Abstract

The utility model provides a kind of milling machine rotating shaft positioning chuck and anti-falling protective sleeve, comprising: outer sleeve, the inside of the outer sleeve is provided with connecting locking mechanism, the inside of the outer sleeve is fixedly installed with the milling cutter of specific specification by connecting locking mechanism, the outside of the outer sleeve is also provided with anti-falling component, compared with prior art, the utility model has the beneficial effects as follows: by setting connecting locking mechanism, the embedding structure of ball and milling cutter groove is utilized, the horn design of through slot is combined with the trapezoidal section of groove, the efficient locking and stable fixation of milling cutter are realized, the installation and disassembly operation of milling cutter are simultaneously controlled by the linear motion of sliding sleeve ring Ball compaction and release, significantly improve the replacement efficiency, especially suitable for the milling machine operating environment that needs frequent tool change.

Description

Technical Field

[0001] This utility model belongs to the field of spindle positioning chucks, and specifically relates to a milling machine spindle positioning chuck and an anti-fall-off protective sleeve. Background Technology

[0002] In milling machine operation environments such as precision mold processing, small multi-process parts milling, CNC teaching and training, and automated production lines with specific tools, it is often necessary to perform multiple processing operations on the same workpiece on a single machine tool. The characteristics of this type of operation mode are: extremely frequent tool changes are required, but within a long production cycle, the tools used are all of the same type and specification. Currently, although the widely used general-purpose spring collets or hydraulic collets can adapt to a variety of tools within a certain size range, their tool changing process usually requires the use of a wrench to lock and loosen, which is cumbersome and time-consuming. Frequent disassembly and assembly cycles can easily lead to low tool changing efficiency. Therefore, we hope to design a milling machine spindle positioning collet and anti-drop protective sleeve to solve this problem. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a milling machine spindle positioning chuck and anti-fall-off protective sleeve to solve the problems mentioned in the background technology.

[0004] This utility model is achieved through the following technical solution: a milling machine spindle positioning chuck and anti-drop protective sleeve, comprising: an outer sleeve, wherein a connecting locking mechanism is provided inside the outer sleeve, and a milling cutter of a specific specification is fixedly installed inside the outer sleeve through the connecting locking mechanism, and an anti-drop component is also provided on the outer side of the outer sleeve; The connecting locking mechanism includes a through groove located inside the outer sleeve. A ball is movably fitted inside the through groove. A groove is provided at the upper end of the milling cutter, and the ball is movably fitted inside the groove. By setting up the connecting locking mechanism, the fitting structure of the ball and the groove of the milling cutter, combined with the trumpet-shaped design of the through groove and the trapezoidal cross-section of the groove, efficient locking and stable fixation of the milling cutter are achieved. At the same time, the linear movement of the sliding collar controls the pressing and releasing of the ball, making the installation and disassembly of the milling cutter simple and quick, significantly improving the replacement efficiency, and is especially suitable for milling machine operation environments that require frequent tool changes.

[0005] In a preferred embodiment, the radial cross-section of the groove is trapezoidal to improve the stability of the locking mechanism.

[0006] In a preferred embodiment, the through groove is a funnel-shaped structure with a larger outer side and a smaller inner side, which is used to prevent the balls from falling into the inner part of the outer sleeve.

[0007] In a preferred embodiment, the milling cutter is slidably sleeved inside the outer sleeve, and the upper end of the milling cutter shank and the inner top of the outer sleeve are both tapered structures for centering guidance and improving locking stability.

[0008] In a preferred embodiment, a fixed collar is fixedly sleeved on the outer side of the outer sleeve, and a sliding collar is slidably sleeved on the outer side of the outer sleeve. The sliding collar and the fixed collar are elastically connected by a disc spring.

[0009] In a preferred embodiment, the inner side of the sliding collar is provided with an annular groove to provide space for the ball displacement.

[0010] In a preferred embodiment, the anti-detachment component includes a groove located on the outer side of the outer sleeve. A slider is fixedly connected inside the sliding collar, and the slider is slidably fitted inside the groove to ensure linear movement of the sliding collar. By setting the anti-detachment component, the sliding collar is constrained to move only linearly along the axial direction by the cooperation of the groove and the slider, ensuring that its pressing and releasing action on the ball is accurate and reliable. The support collar provides axial limit and support for the sliding collar, preventing it from moving excessively downward, and further enhancing the safety of the locked state.

[0011] In a preferred embodiment, the anti-detachment component further includes a support collar, which is fixedly sleeved on the lower outer side of the outer sleeve, and the upper surface of the support collar contacts the sliding collar to support the sliding collar.

[0012] After adopting the above technical solution, the beneficial effects of this utility model are: By setting up a connecting locking mechanism, utilizing the interlocking structure of the ball and the milling cutter groove, combined with the trumpet-shaped design of the through groove and the trapezoidal cross section of the groove, the milling cutter is efficiently locked and stably fixed. At the same time, the linear motion of the sliding collar controls the pressing and releasing of the ball, making the installation and disassembly of the milling cutter simple and quick, significantly improving the replacement efficiency, and is especially suitable for milling machine operation environments that require frequent tool changes.

[0013] By setting up an anti-disengagement component, the sliding collar is constrained to move only linearly along the axial direction using the cooperation of the sliding groove and the slider, ensuring that its pressing and releasing action on the balls is accurate and reliable. The support collar provides axial limit and support for the sliding collar, preventing it from moving too far downward, and further enhancing the safety of the locked state. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional view of the overall structure of a milling machine spindle positioning chuck and anti-fall-off protective sleeve according to the present invention.

[0016] Figure 2 This is a partial exploded view of the connection and locking mechanism of a milling machine spindle positioning chuck and anti-fall-off protective sleeve according to the present invention.

[0017] Figure 3 This is a partial sectional view of a milling machine spindle positioning chuck and anti-fall-off protective sleeve according to the present invention.

[0018] Figure 4 This is a partial exploded view of a milling machine spindle positioning chuck and anti-fall-off protective sleeve according to the present invention.

[0019] In the diagram, 1-outer sleeve, 2-connecting locking mechanism, 3-milling cutter, 4-anti-detachment component; 21-Through groove, 22-Ball bearing, 23-Fixed collar, 24-Sliding collar, 241-Annular arc groove, 25-Disc spring; 31-groove; 41-Slide groove, 42-Support collar, 43-Slider. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-3 As the first embodiment of this utility model: A milling machine spindle positioning chuck and anti-detachment protective sleeve includes: an outer sleeve 1, a connecting locking mechanism 2 is provided inside the outer sleeve 1, a milling cutter 3 of a specific specification is fixedly installed inside the outer sleeve 1 through the connecting locking mechanism 2, and an anti-detachment component 4 is also provided on the outer side of the outer sleeve 1. The connecting locking mechanism 2 includes a through groove 21, which is located inside the outer sleeve 1. A ball bearing 22 is movably fitted inside the through groove 21. A groove 31 is provided at the upper end of the milling cutter 3, and the ball bearing 22 is movably fitted inside the groove 31. By setting the connecting locking mechanism 2, the fitting structure of the ball bearing 22 and the groove 31 of the milling cutter 3, combined with the trumpet-shaped design of the through groove 21 and the trapezoidal cross section of the groove 31, achieves efficient locking and stable fixation of the milling cutter 3. At the same time, the linear movement of the sliding collar 24 controls the pressing and releasing of the ball bearing 22, making the installation and disassembly of the milling cutter 3 simple and quick, significantly improving the replacement efficiency, and is especially suitable for milling machine operation environments that require frequent tool changes.

[0022] The radial cross-section of groove 31 is trapezoidal to improve the stability of locking.

[0023] The through groove 21 is a funnel-shaped structure with a larger outer side and a smaller inner side, which is used to prevent the balls 22 from falling into the inner part of the outer sleeve 1.

[0024] The milling cutter 3 is slidably sleeved inside the outer sleeve 1, and the upper end of the shank of the milling cutter 3 and the inner top of the outer sleeve 1 are both tapered structures, which are used for centering guidance and improving locking stability.

[0025] A fixed collar 23 is also fixedly sleeved on the outer side of the outer sleeve 1, and a sliding collar 24 is also slidably sleeved on the outer side of the outer sleeve 1. The sliding collar 24 and the fixed collar 23 are elastically connected by a disc spring 25.

[0026] An annular groove 241 is provided on the inner side of the sliding collar 24 to provide space for the displacement of the ball 22.

[0027] Specifically, when the milling cutter 3 needs to be installed, the shank of the milling cutter 3 is inserted from the lower end of the outer sleeve 1. At this time, the operator needs to push up the sliding collar 24 so that its inner annular groove 241 is aligned with the ball 22, providing the necessary radial space for the ball 22 to move outward. During the insertion process, since the upper end of the shank of the milling cutter 3 and the inner top of the outer sleeve 1 are both tapered structures, they first play a centering and guiding role to ensure that the milling cutter 3 is accurately inserted. At the same time, the side of the shank of the milling cutter 3 will squeeze the ball 22 located in the through groove 21, forcing the ball 22 to move outward. When the ball 22 moves outward, and the milling cutter 3 is installed in place, that is, when the groove 31 on its shank moves to the same horizontal position as the ball 22, the disc spring 25 is released, and the sliding collar 24 will be reset under the elastic drive of the disc spring 25. Under the compression of the sliding collar 24, the ball 22 is partially embedded in the groove 31 of the milling cutter 3. The trapezoidal cross section of the groove 31 can effectively prevent radial movement. Together with the conical guide structure, it can achieve stable and reliable locking and fixing of the milling cutter 3 inside the outer sleeve 1 while facilitating installation and disassembly.

[0028] Please see Figure 1 , Figure 2 as well as Figure 4 As a second embodiment of this utility model: The anti-detachment component 4 includes a groove 41, which is located on the outer side of the outer sleeve 1. A slider 43 is fixedly connected inside the sliding collar 24. The slider 43 is slidably fitted inside the groove 41 to ensure that the sliding collar 24 moves linearly. By setting the anti-detachment component 4, the groove 41 and the slider 43 cooperate to constrain the sliding collar 24 to move only linearly along the axial direction, ensuring that its pressing and releasing action on the ball 22 is accurate and reliable. The support collar 42 provides axial limit and support for the sliding collar 24 to prevent it from moving too far downward, further enhancing the safety of the locked state.

[0029] The anti-detachment component 4 also includes a support collar 42, which is fixedly sleeved on the lower outer side of the outer sleeve 1. The upper surface of the support collar 42 is in contact with the sliding collar 24 to support the sliding collar 24.

[0030] Based on the above embodiments, further, the sliding collar 24, through its internal slider 43, cooperates with the outer groove 41 of the outer sleeve 1. This structure ensures that the sliding collar 24 can only slide strictly linearly up and down along the axis of the outer sleeve 1 under the action of external force, without rotation or swaying, thereby reliably controlling its pressing and releasing of the ball 22. Under normal conditions, the elastic force of the disc spring 25 acts between the fixed collar 23 and the sliding collar 24, driving the sliding collar 24 to move downward, causing its inner wall to press against the ball 22, forcing the ball 22 to be locked into the groove 31 of the milling cutter 3, forming a locked state. When needed... When replacing or removing the milling cutter 3, the operator pushes the sliding collar 24 upward to compress the disc spring 25, causing the annular groove 241 on the inner side of the sliding collar 24 to align with the ball 22 again, releasing the radial constraint on the ball 22. The ball 22 can then move into the space of the annular groove 241, and the milling cutter 3 is released. At the same time, the support collar 42 fixed to the lower end of the outer sleeve 1 has its upper surface in contact with the lower edge of the sliding collar 24, providing solid axial support for the sliding collar 24 in the lowest position, i.e., the locked state, limiting its stroke end point, effectively preventing it from moving too far downward, and further enhancing the stability and safety of the locked state.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A milling machine spindle positioning chuck and anti-falling protective sleeve, comprising: The outer sleeve (1) is characterized in that a connecting locking mechanism (2) is provided inside the outer sleeve (1), a milling cutter (3) of a specific specification is fixedly installed inside the outer sleeve (1) through the connecting locking mechanism (2), and an anti-detachment component (4) is also provided on the outside of the outer sleeve (1). The connecting locking mechanism (2) includes a through groove (21), which is opened inside the outer sleeve (1). A ball (22) is movably fitted inside the through groove (21). A groove (31) is opened at the upper end of the milling cutter (3), and the ball (22) is movably fitted inside the groove (31).

2. The spindle positioning chuck and anti-falling protective sleeve of claim 1, wherein: The radial cross-section of the groove (31) is a trapezoidal structure to improve the stability of the locking.

3. The spindle positioning chuck and anti-falling protective sleeve of claim 1, wherein: The through groove (21) is a funnel-shaped structure with a larger outer side and a smaller inner side, which is used to prevent the balls (22) from falling into the inner side of the outer sleeve (1).

4. The spindle positioning chuck and anti-falling protective sleeve of claim 1, wherein: The milling cutter (3) is slidably sleeved inside the outer sleeve (1), and the upper end of the milling cutter (3) handle and the inner top of the outer sleeve (1) are both tapered structures, which are used for centering guidance and improving the stability of locking.

5. The spindle positioning chuck and anti-drop protective sleeve of claim 1, wherein: A fixed collar (23) is fixedly sleeved on the outer side of the outer sleeve (1), and a sliding collar (24) is slidably sleeved on the outer side of the outer sleeve (1). The sliding collar (24) and the fixed collar (23) are elastically connected by a disc spring (25).

6. The spindle positioning chuck and anti-drop protective sleeve of claim 5, wherein: The inner side of the sliding collar (24) is provided with an annular groove (241) to provide space for the displacement of the ball (22).

7. The spindle positioning chuck and anti-drop protective sleeve of claim 5, wherein: The anti-detachment component (4) includes a groove (41) which is opened on the outside of the outer sleeve (1). A slider (43) is fixedly connected inside the sliding collar (24). The slider (43) is slidably fitted inside the groove (41) to ensure that the sliding collar (24) moves linearly.

8. The spindle positioning chuck and anti-drop protective sleeve of claim 7, wherein: The anti-detachment component (4) also includes a support collar (42), which is fixedly sleeved on the lower outer side of the outer sleeve (1). The upper surface of the support collar (42) is in contact with the sliding collar (24) to support the sliding collar (24).

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