Stable guide sleeve for unfolding type cutter

Abstract

The invention relates to the technical field of numerical control cutter production, in particular to a stable guide sleeve for an unfolded cutter, which comprises a cutter bar and a support sleeve, a plurality of annular grooves are formed in the support sleeve along the circumferential direction, a plurality of arc-shaped slide blocks are slidably arranged in the annular grooves, and a plurality of slide grooves are formed in the support sleeve along the circumferential direction. A plurality of sliding blocks are arranged in the sliding groove in a sliding mode, arc-shaped supporting blocks are arranged at the upper ends of the sliding blocks, the supporting sleeve is driven to rotate through the cutter bar, the arc-shaped sliding blocks slide reversely under the inertia effect, the sliding blocks are driven to be ejected out, and the arc-shaped supporting blocks are driven to expand outwards to support the expanding clamping sleeve; the problems that when a guide sleeve used by an existing cutter is installed, a concentric shaft supporting sleeve needs to be placed into a machining guide hole through a special tool, then a cutter bar is placed into a concentric shaft for supporting, the operation is tedious, time and labor are wasted, and the production efficiency is reduced are solved.

Description

Technical Field

[0001] The invention relates to the technical field of CNC tool production, in particular to a stable guide sleeve for an unfolded tool. Background Art

[0002] The main function of the tool guide sleeve is to guide the tool for processing, improve the processing accuracy, reduce the vibration during the processing, and ensure the processing quality. A Chinese invention patent with application announcement number CN106975779B discloses an internal feed tool. The front end of the tool rod is covered with a tool rod guide sleeve. The tool rod is inserted into the hole of the workpiece to be processed and positioned by the tool rod guide sleeve. There is no need to repeatedly adjust the concentricity, and the positioning is convenient; the guide sleeve makes the tool rod run smoothly relative to the workpiece, with high processing accuracy and good processing surface flatness, and improves the symmetry of keyway processing; a Chinese invention patent with application announcement number CN118106556A discloses a rack chamfering tool, including a tool assembly and a cleaning assembly. The tool assembly includes a tool rod, a guide sleeve is provided at the left end of the outside of the tool rod, and an elastic retaining ring is installed on the left side of the outside of the guide sleeve. The invention overcomes the chamfering of the hole at a special but critical position, and improves the processing efficiency while meeting the quality requirements.

[0003] However, the inventors found that in actual use, the guide sleeve used in the tool needs to be installed with a special tool to place the concentric shaft support sleeve into the processed guide hole, and then place the tool rod into the concentric shaft for support, which is rather cumbersome, time-consuming and labor-intensive, and reduces production efficiency. Summary of the invention

[0004] The purpose of the present invention is to address the deficiencies in the prior art. The support sleeve is driven to rotate by the tool rod, and the arc-shaped slider slides in the opposite direction under the action of inertia, driving the slider to be ejected, and driving the arc-shaped support block to expand outward to support the extended sleeve, and the workpiece is supported and positioned by the extended sleeve, which solves the problem that the guide sleeve used in the existing tool needs to be installed with a special tool to place the concentric shaft support sleeve into the machining guide hole, and then the tool rod is placed in the concentric shaft for support, which is cumbersome, time-consuming, labor-intensive, and reduces production efficiency.

[0005] In view of the above technical problems, the technical solutions adopted by the present invention are as follows:

[0006] A stable guide sleeve for an expandable tool comprises a tool rod and a support sleeve, wherein the support sleeve is provided with a plurality of annular grooves along the circumferential direction, wherein a plurality of arc-shaped sliders are slidably arranged in the annular grooves, wherein the support sleeve is provided with a plurality of slide grooves along the circumferential direction, wherein a plurality of sliders are slidably arranged in the slide grooves, wherein an arc-shaped support block is arranged at the upper end of the slider, and the support sleeve is driven to rotate by the tool rod, and the arc-shaped slider slides in the opposite direction under the action of inertia, thereby driving the slider to be ejected, and driving the arc-shaped support block to expand outward to support the expansion jacket.

[0007] As a preference, a slope is provided at the right end of the arc-shaped slider, and a plurality of protrusions are provided at the lower end of the arc-shaped slider.

[0008] As a preferred embodiment, a plurality of inclined blocks are provided on the knife rod.

[0009] As a preference, the lower end portion of the slider is configured to be in an arc shape.

[0010] As a preferred embodiment, a supporting groove is provided in the expansion jacket.

[0011] As a preference, a plurality of oil outlet components are arranged in the support sleeve.

[0012] Preferably, the oil outlet assembly comprises an oil storage chamber arranged in the support sleeve and a ball slidably arranged at the lower end of the oil storage chamber.

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

[0014] Beneficial effects of the present invention:

[0015] 1. In the present invention, the support sleeve is driven to rotate by the tool rod, and the arc-shaped slider slides in the opposite direction under the action of inertia, driving the slider to be ejected, and driving the arc-shaped support block to expand outward to support the extended sleeve. The workpiece is supported and positioned by the extended sleeve to achieve stable support for the workpiece, and the tool rod does not stop rotating, and the slider will continue to be ejected, making its clamping more stable.

[0016] In summary, the device has the advantage of stable support for workpieces and is particularly suitable for the field of CNC tool production technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the unfolded tool;

[0019] Figure 2 Schematic diagram of the structure of a stable guide sleeve for an unfolded tool

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

[0021] Figure 4 is a cross-sectional schematic diagram of the support sleeve;

[0022] Figure 5 for Figure 4 A in the enlarged view;

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

[0024] Figure 7 It is a schematic diagram of the structure of the extended jacket;

[0025] Figure 8 This is a working state diagram of a stable guide sleeve for an expandable tool.

[0026] 1. Tool bar; 2. Support sleeve; 3. Annular groove; 4. Arc-shaped slider; 5. Slide groove; 6. Slider; 7. Arc-shaped support block; 8. Extension jacket; 9. Oil outlet assembly; 11. Inclined block; 41. Inclined surface; 42. Bump; 81. Support groove; 91. Oil storage chamber; 92. Ball; 93. Spring. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings.

[0028] Embodiment 1

[0029] like Figures 1 to 8 As shown, a stable guide sleeve for an expandable tool includes a tool rod 1 and a support sleeve 2, wherein the support sleeve 2 is provided with a plurality of annular grooves 3 along the circumferential direction, and a plurality of arc-shaped sliders 4 are slidably arranged in the annular grooves 3, and the support sleeve 2 is provided with a plurality of slide grooves 5 along the circumferential direction, and a plurality of sliders 6 are slidably arranged in the slide grooves 5, and an arc-shaped support block 7 is arranged on the upper end of the slider 6. The support sleeve 2 is driven to rotate by the tool rod 1, and the arc-shaped slider 4 slides in the opposite direction under the action of inertia, drives the slider 6 to be ejected, and drives the arc-shaped support block 7 to expand outward to support the extended jacket 8.

[0030] It is worth mentioning here that the support sleeve 2 is driven to rotate by the tool rod 1, and the arc-shaped slider 4 slides in the opposite direction under the action of inertia, driving the slider 6 to be ejected, and driving the arc-shaped support block 7 to expand outward to support the extended sleeve 8. The workpiece is supported and positioned by the extended sleeve 8 to achieve stable support for the workpiece, and the tool rod 1 does not stop rotating, and the slider 6 will continue to be ejected, making its clamping more stable.

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

[0032] In this example, the inclined surface 41 is provided to make it easier for the arc-shaped slider 4 to push out the slider 6 , and the protrusion 42 can limit the arc-shaped slider 4 .

[0033] like Figure 4 As shown, a plurality of inclined blocks 11 are arranged on the knife bar 1.

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

[0035] like Figure 3 As shown, the lower end of the slider 6 is configured to be arc-shaped.

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

[0037] like Figure 6 As shown, a support groove 81 is provided in the expansion jacket 8 .

[0038] like Figure 4 As shown, a plurality of oil outlet components 9 are arranged in the support sleeve 2 .

[0039] like Figure 3 As shown, the oil outlet assembly 9 includes an oil storage chamber 91 disposed in the support sleeve 2 and a round 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 ball 92 .

[0041] like Figure 4 As shown, a spring 93 is arranged between the ball 92 and the oil storage cavity 91 , and one end of the ball 92 is arranged in the oil storage cavity 91 , and the other end is arranged 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 chamber 91. The lubricating oil in the oil storage chamber 91 flows out through the gap, flows onto the arc-shaped slider 4, and flows along the arc-shaped slider 4 to the protrusion 42, thereby lubricating it and reducing its friction, so that when the tool rod 1 stops rotating, the protrusion 42 can more easily pass over the right end of the inclined block 11 and slide back to its original position.

[0043] The working process is as follows:

[0044] The tool bar 1 drives the support sleeve 2 to rotate, and the arc-shaped slider 4 slides in the opposite direction under the action of inertia, driving the slider 6 to be ejected, so that the arc-shaped support block 7 expands outward to support the expansion jacket 8, and the workpiece is supported and positioned by the expansion jacket 8;

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

[0046] During the sliding process of the arc-shaped slider 4, the ball 92 is squeezed and retracted into the oil storage chamber 91. The lubricating oil in the oil storage chamber 91 flows out through the gap, flows onto the arc-shaped slider 4, and flows along the arc-shaped slider 4 to the protrusion 42, thereby lubricating it and reducing its friction, so that when the tool rod 1 stops rotating, the protrusion 42 can more easily pass over the right end of the inclined block 11 and slide back to its original position.

[0047] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical guidance of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A stabilizing guide sleeve for an expandable tool, comprising a tool bar (1) and a support sleeve (2), characterized in that: The support sleeve (2) is provided with a plurality of annular grooves (3) along the circumferential direction, and a plurality of arc-shaped sliders (4) are slidably arranged in the annular grooves (3). The support sleeve (2) is provided with a plurality of slide grooves (5) along the circumferential direction, and a plurality of sliders (6) are slidably arranged in the slide grooves (5). An arc-shaped support block (7) is arranged at the upper end of the slider (6). The support sleeve (2) is driven to rotate by the knife rod (1), and the arc-shaped slider (4) slides in the opposite direction under the action of inertia, driving the slider (6) to be ejected, and driving the arc-shaped support block (7) to expand outward to support the expansion jacket (8).

2. A stabilizing guide sleeve for an expandable tool according to claim 1, characterized in that: The right end of the arc-shaped sliding block (4) is provided with an inclined surface (41), and the lower end of the arc-shaped sliding block (4) is provided with a plurality of protrusions (42).

3. A stabilizing guide sleeve for an expandable tool according to claim 1, characterized in that: The knife rod (1) is provided with a plurality of inclined blocks (11).

4. A stabilizing guide sleeve for an expandable tool according to claim 1, characterized in that: The lower end of the slider (6) is arranged in an arc shape.

5. A stabilizing guide sleeve for an expandable tool according to claim 1, characterized in that: A supporting groove (81) is provided in the expansion jacket (8).

6. A stabilizing guide sleeve for an expandable tool according to claim 1, characterized in that: A plurality of oil outlet components (9) are arranged in the support sleeve (2).

7. A stabilizing guide sleeve for an expandable tool according to claim 6, characterized in that: The oil outlet assembly (9) comprises an oil storage chamber (91) arranged in the support sleeve (2) and a round ball (92) slidably arranged at the lower end of the oil storage chamber (91).

8. A stabilizing guide sleeve for an expandable tool according to claim 7, characterized in that: A spring (93) is arranged between the ball (92) and the oil storage chamber (91); one end of the ball (92) is arranged in the oil storage chamber (91), and the other end is arranged in the annular groove (3).

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