A stabilizing guide sleeve for an unfolding cutting tool

Abstract

This invention relates to the field of CNC tool manufacturing technology, and in particular to a stabilizing guide sleeve for an expandable tool, comprising a tool holder and a support sleeve. The support sleeve has several annular grooves along its circumference, within which several arc-shaped sliders are slidably arranged. The support sleeve also has several sliding grooves along its circumference, within which several sliders are slidably arranged. An arc-shaped support block is provided at the upper end of each slider. The tool holder drives the support sleeve to rotate, and under inertia, the arc-shaped sliders slide in the opposite direction, pushing the sliders outward and causing the arc-shaped support block to expand outward, supporting the expanded sleeve. This invention solves the problem that the installation of existing tool guide sleeves requires a special tool to insert the concentric shaft support sleeve into the machining guide hole, and then insert the tool holder into the concentric shaft for support, which is cumbersome, time-consuming, labor-intensive, and reduces production efficiency.

Description

Technical Field

[0001] This invention relates to the field of CNC tool manufacturing technology, specifically to a stabilizing guide sleeve for an unfolding tool. Background Technology

[0002] The main function of a tool guide sleeve is to guide the tool during machining, improve machining accuracy, reduce vibration during machining, and ensure machining quality. A Chinese invention patent with application publication number CN106975779B discloses an internal feed tool. A tool guide sleeve is fitted around the front section of the tool shank. The tool shank is inserted into the hole of the workpiece and positioned by the tool guide sleeve, eliminating the need for repeated concentricity adjustments and facilitating positioning. The guide sleeve ensures a smooth running trajectory of the tool shank relative to the workpiece, resulting in high machining accuracy, good surface flatness, and improved symmetry in keyway machining. Another Chinese invention patent with application publication number CN118106556A discloses a frame chamfering tool, including a tool assembly and a cleaning assembly. The tool assembly includes a tool shank, with a guide sleeve on the left end of the tool shank and an elastic retaining ring installed on the left side of the guide sleeve. This invention overcomes the challenges of chamfering holes in special but critical locations, improving machining efficiency while meeting quality requirements.

[0003] However, the inventors discovered that in actual use, the guide sleeve used by the tool requires a special tool to insert the concentric shaft support sleeve into the machining guide hole, and then insert the tool bar into the concentric shaft for support, which is cumbersome, time-consuming, and labor-intensive, reducing production efficiency. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies. By rotating the support sleeve driven by the tool holder, the arc-shaped slider slides in the opposite direction under inertia, causing the slider to be pushed out and the arc-shaped support block to expand outward to support the extended clamping sleeve. The extended clamping sleeve supports and positions the workpiece, solving the problem that the guide sleeve used in existing tools requires a special tool to insert the concentric shaft support sleeve into the machining guide hole and then insert the tool holder into the concentric shaft for support, which is cumbersome, time-consuming, labor-intensive, and reduces production efficiency.

[0005] To address the aforementioned technical problems, the present invention adopts the following technical solution:

[0006] A stabilizing guide sleeve for an expandable cutting tool includes a tool holder and a support sleeve. The support sleeve has several annular grooves along its circumference, and several arc-shaped sliders are slidably disposed within the annular grooves. The support sleeve also has several sliding grooves along its circumference, and several sliders are slidably disposed within the sliding grooves. An arc-shaped support block is provided at the upper end of each slider. The tool holder drives the support sleeve to rotate, and under the action of inertia, the arc-shaped sliders slide in the opposite direction, causing the sliders to be pushed outward and causing the arc-shaped support blocks to expand outward to support the expanded sleeve.

[0007] As a preferred embodiment, the right end of the arc-shaped slider is provided with an inclined surface, and the lower end of the arc-shaped slider is provided with a plurality of protrusions.

[0008] As a preferred embodiment, the tool holder is provided with several inclined blocks.

[0009] As a preferred embodiment, the lower end of the slider is configured as an arc shape.

[0010] As a preferred embodiment, the extended sleeve has a support groove.

[0011] As a preferred embodiment, the support sleeve is provided with several oil outlet components.

[0012] As a preferred embodiment, the oil outlet assembly includes an oil storage chamber disposed within a support sleeve and a sphere slidably disposed at the lower end of the oil storage chamber.

[0013] As another preferred embodiment, a spring is provided between the sphere and the oil storage cavity, with one end of the sphere disposed in the oil storage cavity and the other end disposed in the annular groove.

[0014] The beneficial effects of this invention are:

[0015] 1. In this invention, the tool holder drives the support sleeve to rotate, and under the action of inertia, the arc-shaped slider slides in the opposite direction, causing the slider to be pushed out and the arc-shaped support block to expand outward to support the extended clamping sleeve. The extended clamping sleeve supports and positions the workpiece, achieving stable support for the workpiece. Moreover, the tool holder does not stop rotating, and the slider will continue to be pushed out, making its clamping more stable.

[0016] In summary, this equipment has the advantage of providing stable support for workpieces, and is particularly suitable for the field of CNC tool manufacturing technology. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an unfolded cutting tool;

[0019] Figure 2 Schematic diagram of a stabilizing guide sleeve for an unfolding cutting tool

[0020] Figure 3 This is a schematic diagram of the support sleeve structure;

[0021] Figure 4 This is a cross-sectional view of the support sleeve;

[0022] Figure 5 for Figure 4 Enlarged view of point A in the image;

[0023] Figure 6 This is a schematic diagram of the support sleeve structure;

[0024] Figure 7 A schematic diagram of the extended jacket structure;

[0025] Figure 8 This is a diagram showing the working state of a stabilizing guide sleeve for an unfolding cutting tool.

[0026] 1. Tool holder; 2. Support sleeve; 3. Annular groove; 4. Arc-shaped slider; 5. Slide groove; 6. Slider; 7. Arc-shaped support block; 8. Extended jacket; 9. Oil outlet assembly; 11. Inclined block; 41. Inclined surface; 42. Protrusion; 81. Support groove; 91. Oil storage cavity; 92. Sphere; 93. Spring. Detailed Implementation

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0028] Example 1

[0029] like Figures 1 to 8 As shown, a stabilizing guide sleeve for an expandable cutting tool includes a tool holder 1 and a support sleeve 2. The support sleeve 2 has several annular grooves 3 along the circumferential direction, and several arc-shaped sliders 4 are slidably disposed in the annular grooves 3. The support sleeve 2 also has several sliding grooves 5 along the circumferential direction, and several sliders 6 are slidably disposed in the sliding grooves 5. An arc-shaped support block 7 is provided at the upper end of the slider 6. The tool holder 1 drives the support sleeve 2 to rotate, and under the action of inertia, the arc-shaped sliders 4 slide in the opposite direction, causing the sliders 6 to be pushed out, and causing the arc-shaped support block 7 to expand outward to support the expansion sleeve 8.

[0030] It is worth mentioning that by driving the support sleeve 2 to rotate through the tool holder 1, the arc-shaped slider 4 slides in the opposite direction under the action of inertia, driving the slider 6 to push out, and driving the arc-shaped support block 7 to expand outward to support the extended clamping sleeve 8. The extended clamping sleeve 8 supports and positions the workpiece, achieving stable support for the workpiece. Moreover, as long as the tool holder 1 does not stop rotating, the slider 6 will continue to push out, making its clamping more stable.

[0031] like Figure 3 , 4 As shown, the right end of the arc-shaped slider 4 is provided with a slope 41, and the lower end of the arc-shaped slider 4 is provided with a number of protrusions 42.

[0032] In this example, the inclined surface 41 makes it easier for the curved slider 4 to push out the slider 6, and the protrusion 42 can limit the curved slider 4.

[0033] like Figure 4 As shown, the tool holder 1 is provided with several inclined blocks 11.

[0034] In this example, the inclined block 11 limits the protrusion 42, thereby limiting the arc-shaped slider 4. The left end of the inclined block 11 is set as a ramp, and the right end is set with an arc surface. The inclined block 11 can only prevent the arc-shaped slider 4 from moving back and forth during the movement of the tool bar 1. When the tool bar 1 stops rotating, due to inertia, the protrusion 42 at the lower end of the arc-shaped slider 4 can pass over the right end of the inclined block 11 and slide back to its original position.

[0035] like Figure 3 As shown, the lower end of slider 6 is set to an arc shape.

[0036] In this example, by setting the lower end of slider 6 to be arc-shaped, the friction between the arc-shaped slider 4 and slider 6 is reduced, making it easier to be pushed out.

[0037] like Figure 6 As shown, a support groove 81 is provided inside the extended sleeve 8.

[0038] like Figure 4 As shown, the support sleeve 2 is equipped with several oil outlet components 9.

[0039] like Figure 3 As shown, the oil outlet assembly 9 includes an oil storage chamber 91 disposed within the support sleeve 2 and a ball 92 slidably disposed at the lower end of the oil storage chamber 91.

[0040] In this example, the lubricating oil in the oil storage chamber 91 can be squeezed out by squeezing the sphere 92.

[0041] like Figure 4 As shown, a spring 93 is provided between the sphere 92 and the oil storage cavity 91. One end of the sphere 92 is located in the oil storage cavity 91, and the other end is located in the annular groove 3.

[0042] In this example, during the sliding process of the arc-shaped slider 4, the ball 92 is squeezed and retracted into the oil storage cavity 91. The lubricating oil in the oil storage cavity 91 flows out through the gap and onto the arc-shaped slider 4. It then flows along the arc-shaped slider 4 onto the protrusion 42, which lubricates it and reduces its friction. This makes it easier for the protrusion 42 to pass over the right end of the inclined block 11 and slide back to its original position when the tool bar 1 stops rotating.

[0043] The work process is as follows:

[0044] The tool holder 1 drives the support sleeve 2 to rotate. Under the action of inertia, the arc-shaped slider 4 slides in the opposite direction, which drives the slider 6 to push out, so that the arc-shaped support block 7 expands outward to support the extended clamping sleeve 8. The extended clamping sleeve 8 supports and positions the workpiece.

[0045] When the tool holder 1 stops rotating, due to inertia, the protrusion 42 at the lower end of the arc-shaped slider 4 can pass over the right end of the inclined block 11 and slide back to its original position;

[0046] As the arc-shaped slider 4 slides, it compresses the ball 92, causing it to retract into the oil storage cavity 91. The lubricating oil in the oil storage cavity 91 flows out through the gap and onto the arc-shaped slider 4. It then flows along the arc-shaped slider 4 onto the protrusion 42, where it lubricates the protrusion and reduces its friction. This makes it easier for the protrusion 42 to pass over the right end of the inclined block 11 and slide back to its original position when the tool bar 1 stops rotating.

[0047] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art under the technical guidance of the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A stabilizing guide sleeve for an unfolding cutting tool, comprising a tool holder (1) and a support sleeve (2), characterized in that: The support sleeve (2) has several annular grooves (3) along the circumferential direction. Several arc-shaped sliders (4) are slidably arranged in the annular grooves (3). The support sleeve (2) has several sliding grooves (5) along the circumferential direction. Several sliders (6) are slidably arranged in the sliding grooves (5). An arc-shaped support block (7) is provided at the upper end of the slider (6). The support sleeve (2) is rotated by the knife bar (1). Under the action of inertia, the arc-shaped slider (4) slides in the opposite direction, which drives the slider (6) to push out and drives the arc-shaped support block (7) to expand outward to support the expansion sleeve (8). The right end of the arc-shaped slider (4) is provided with a slope (41), and the lower end of the arc-shaped slider (4) is provided with a number of protrusions (42). The tool holder (1) is provided with several inclined blocks (11), the left end of the inclined block (11) is provided with a slope, and the right end of the inclined block (11) is provided with an arc surface; The lower end of the slider (6) is set to be arc-shaped.

2. The stabilizing guide sleeve for an unfolding cutting tool according to claim 1, characterized in that, The extended sleeve (8) has a support groove (81) inside.

3. A stabilizing guide sleeve for an unfolding cutting tool according to claim 1, characterized in that, The support sleeve (2) is provided with several oil outlet components (9).

4. A stabilizing guide sleeve for an unfolding cutting tool according to claim 3, characterized in that, The oil outlet assembly (9) includes an oil storage chamber (91) disposed in the support sleeve (2) and a ball (92) slidably disposed at the lower end of the oil storage chamber (91).

5. A stabilizing guide sleeve for an unfolding cutting tool according to claim 4, characterized in that, A spring (93) is provided between the sphere (92) and the oil storage cavity (91). One end of the sphere (92) is located in the oil storage cavity (91), and the other end is located in the annular groove (3).

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