Anti-vibration cutter bar for deep hole or deep surface machining

Abstract

The anti-vibration cutter bar for deep hole or deep surface machining comprises an outer cutter bar body, an upper mandrel, a middle mandrel and a lower mandrel, a mounting head is arranged at the top end of the outer cutter bar body, a containing cavity is formed in the outer cutter bar body, the bottom end of the containing cavity extends to the bottom end of the outer cutter bar body, and the upper mandrel, the middle mandrel and the lower mandrel are all movably arranged in the containing cavity. The side wall of the upper mandrel and the side wall of the lower mandrel are each sleeved with a first rubber ring abutting against the side wall of the containing cavity, the connecting position of the upper mandrel and the middle mandrel and the connecting position of the lower mandrel and the middle mandrel are each provided with a second rubber ring, and the top end and the bottom end of the outer cutter bar are provided with a first damping structure and a second damping structure correspondingly. And the first damping structure and the second damping structure respectively form a damping effect on the top end of the upper core shaft and the bottom end of the lower core shaft, so that the anti-seismic effect can be improved, and the processing quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of anti -shock cutter bar especially for deep hole or deep surface processing's anti -shock cutter bar. BACKGROUND

[0002] In the machining process, the vibration of the cutter will seriously affect the machining quality and machining accuracy of the workpiece, and the use of anti-vibration cutter bar can reduce the vibration of the cutter and protect the machining quality. Chinese patent No. CN216912138U discloses "an anti-vibration cutter bar for deep hole or deep surface machining", which sets a cutter bar core shaft in the outer shaft of the cutter bar, and sets a rubber ring on both ends of the cutter bar core shaft, to achieve a certain anti-vibration effect. However, the anti-vibration effect of this structure is still not ideal, which cannot meet the higher machining quality requirements of customers, and needs to be improved. SUMMARY

[0003] The problem to be solved by the utility model lies in providing an anti-vibration cutter bar for deep hole or deep surface machining, which can improve the anti-vibration effect and protect the machining quality.

[0004] To solve the above technical problems, the utility model provides an anti-vibration cutter bar for deep hole or deep surface machining, which comprises an outer cutter bar, an upper core shaft, a middle core shaft, a lower core shaft, a mounting head is arranged at the top end of the outer cutter bar, a containing cavity is arranged in the inner part of the outer cutter bar, the bottom end of the containing cavity extends to the bottom end of the outer cutter bar, the upper core shaft, the middle core shaft and the lower core shaft are movably arranged in the containing cavity, a first rubber ring is sleeved on the side wall of the upper core shaft and the lower core shaft and abuts against the side wall of the containing cavity, a second rubber ring is arranged at the connection between the upper core shaft and the middle core shaft and between the lower core shaft and the middle core shaft, a first damping structure and a second damping structure are respectively arranged at the top end and the bottom end of the outer cutter bar, and the first damping structure and the second damping structure respectively form damping effects on the top end of the upper core shaft and the bottom end of the lower core shaft.

[0005] Preferably, first circular table end parts are arranged at the centers of both ends of the middle core shaft, a cylindrical part is arranged at the center of the first circular table end part, a first circular groove is arranged at the center of the bottom end of the upper core shaft and the top end of the lower core shaft, a second circular groove matched with the cylindrical part is arranged at the center of the first circular groove, the second rubber ring is sleeved on the first circular table end part and abuts against the side wall of the first circular groove, and a third rubber ring is sleeved on the cylindrical part and abuts against the side wall of the second circular groove.

[0006] Preferably, containing grooves are arranged at both ends of the middle core shaft, second circular table end parts are arranged at the bottom end of the upper core shaft and the top end of the lower core shaft, the second rubber ring is sleeved on the second circular table end part and abuts against the side wall of the containing groove, and an empty groove for avoiding the second circular table end part is arranged on the containing groove.

[0007] Preferably, the first damping structure comprises a first screw, a first spring, a top of the mounting head is provided with a first screw hole communicated with the accommodating cavity, the first screw is threadedly connected on the first screw hole, and the first spring is abutted between one end of the first screw and the top end of the upper mandrel; the second damping structure comprises a second screw, a second spring, an inner thread matched with the second screw is arranged on the bottom end of the side wall of the accommodating cavity, the second screw is connected on the inner thread, and the second spring is abutted between one end of the second screw and the bottom end of the lower mandrel.

[0008] Preferably, a plurality of mounting holes for mounting the tool bit are arranged on the side wall of the outer cutter bar.

[0009] Preferably, the side wall of the upper mandrel and the side wall of the lower mandrel are both provided with a first annular groove matched with the first rubber ring, and the first rubber ring is sleeved on the first annular groove.

[0010] Preferably, the periphery of the second circular groove is provided with a second annular groove matched with the third rubber ring, and the third rubber ring is arranged on the second annular groove.

[0011] Preferably, the middle mandrel is made of tungsten steel or white steel, and the upper mandrel and the lower mandrel are both made of steel.

[0012] Preferably, a through hole is arranged through the center of the upper mandrel, the middle mandrel and the lower mandrel.

[0013] The utility model discloses an anti-shock cutter bar for deep hole or deep surface machining, which has the advantages that the upper mandrel, the middle mandrel and the lower mandrel are arranged in the accommodating cavity, the first rubber ring is sleeved on the upper mandrel and the lower mandrel, the second rubber ring is arranged at the connecting position of the upper mandrel, the lower mandrel and the middle mandrel, the first damping structure and the second damping structure are arranged at the top end and the bottom end of the outer cutter bar respectively, the mounting head is mounted on the spindle of the machine tool, and the tool bit is mounted on the outer cutter bar. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The outer shape structure schematic diagram of the first embodiment of the utility model is exemplified.

[0015] Figure 2The sectional view of the first embodiment of the utility model is exemplified.

[0016] Figure 3 The exploded structural schematic view of the first embodiment of the utility model is exemplified.

[0017] Figure 4 The sectional view of the second embodiment of the utility model is exemplified. Figure 2 The local enlarged structural schematic view of A part in the middle is exemplified.

[0018] Figure 5 The sectional view of the second embodiment of the utility model is exemplified.

[0019] Figure 6 The exploded structural schematic view of the second embodiment of the utility model is exemplified.

[0020] Explanation of reference numerals: outer cutter rod 1, mounting head 10, first screw hole 100, accommodating cavity 11, internal thread 110, mounting hole 12, upper mandrel 2, first annular groove 21, through hole 22, first circular groove 23, second circular groove 24, second annular groove 25, middle mandrel 3, circular table end 30, cylindrical part 31, accommodating groove 32, empty slot 33, lower mandrel 4, first rubber ring 5, second rubber ring 6, first damping structure 7, first screw 70, first spring 71, second damping structure 8, second screw 80, second spring 81, third rubber ring 9. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the present disclosure more clear, the technical scheme of the embodiments of the present disclosure will be described clearly and completely below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all the embodiments.

[0022] Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present disclosure.

[0023] Reference Figures 1-6 .

[0024] The utility model provides a kind of anti-shock cutter bar for deep hole or deep surface processing, including outer cutter bar 1, upper mandrel 2, middle mandrel 3, lower mandrel 4, the top of outer cutter bar 1 is provided with mounting head 10, the inside of outer cutter bar 1 is provided with containing cavity 11, containing cavity 11 bottom end extends to the bottom end of outer cutter bar 1, upper mandrel 2, middle mandrel 3, lower mandrel 4 are movably arranged in containing cavity 11, the sidewall of upper mandrel 2, lower mandrel 4 is all set with the first rubber ring 5 that abuts on the sidewall of containing cavity 11, the connecting place of upper mandrel 2, lower mandrel 4 and middle mandrel 3 is all provided with second rubber ring 6, the top, bottom of outer cutter bar 1 is provided with first damping structure 7, second damping structure 8 respectively, first damping structure 7, second damping structure 8 respectively form damping effect to the top of upper mandrel 2, the bottom of lower mandrel 4.

[0025] Specific use principle is, by being provided with upper mandrel 2, middle mandrel 3, lower mandrel 4 in containing cavity 11, the first rubber ring 5 is set on upper mandrel 2, lower mandrel 4, the connecting place of upper mandrel 2, lower mandrel 4 and middle mandrel 3 is provided with second rubber ring 6, and first damping structure 7, second damping structure 8 are respectively provided on the top, bottom of outer cutter bar 1, mounting head 10 is installed on the spindle of machine tool, and tool bit is installed on outer cutter bar 1, in the process that tool bit processes workpiece, upper mandrel 2, middle mandrel 3, lower mandrel 4 can produce small amplitude in containing cavity 11, first damping structure 7, second damping structure 8 respectively form damping effect to the top of upper mandrel 2, the bottom of lower mandrel 4, first rubber ring 5 can form buffering and waterproof effect between upper mandrel 2, lower mandrel 4 and the sidewall of containing cavity 11, second rubber ring 6 can form buffering and waterproof effect to the connecting place of upper mandrel 2, lower mandrel 4 and middle mandrel 3, upper mandrel 2, middle mandrel 3, lower mandrel 4 have different vibration frequency, can cause interference to the vibration frequency of cutter bar, unload vibration, effectively reduce the vibration of cutter bar, let tool more stably process workpiece, greatly improve processing quality and processing accuracy, applicable to higher speed spindle, with the advantage of low cost.

[0026] Based on the above embodiment, as attached Figure 2 、 3As shown, the center of the middle mandrel 3 is provided with a first circular table end 30, the center of the first circular table end 30 is provided with a cylindrical part 31, the bottom end of the upper mandrel 2 and the top end of the lower mandrel 4 are both provided with a first circular groove 23, the center of the first circular groove 23 is provided with a second circular groove 24 matched with the cylindrical part 31, the second rubber ring 6 is sleeved on the first circular table end 30 and abuts against the side wall of the first circular groove 23, the cylindrical part 31 is sleeved with the third rubber ring 9 abutting against the side wall of the second circular groove 24, the second rubber ring 6 can form a buffering and waterproof effect between the first circular table end 30 and the side wall of the first circular groove 23, and the third rubber ring 9 can form a buffering and waterproof effect between the cylindrical part 31 and the second circular groove 24, so as to interfere with the vibration frequency of the tool bar and unload the vibration, thereby effectively reducing the vibration of the tool bar.

[0027] Based on the above embodiment, as shown in the accompanying drawings, Figure 5 、 6 As shown, the center of the middle mandrel 3 is provided with a first circular table end 30, the center of the first circular table end 30 is provided with a cylindrical part 31, the bottom end of the upper mandrel 2 and the top end of the lower mandrel 4 are both provided with a first circular groove 23, the center of the first circular groove 23 is provided with a second circular groove 24 matched with the cylindrical part 31, the second rubber ring 6 is sleeved on the first circular table end 30 and abuts against the side wall of the first circular groove 23, the cylindrical part 31 is sleeved with the third rubber ring 9 abutting against the side wall of the second circular groove 24, the second rubber ring 6 can form a buffering and waterproof effect between the first circular table end 30 and the side wall of the first circular groove 23, and the third rubber ring 9 can form a buffering and waterproof effect between the cylindrical part 31 and the second circular groove 24, so as to interfere with the vibration frequency of the tool bar and unload the vibration, thereby effectively reducing the vibration of the tool bar.

[0028] Based on the above embodiment, the first damping structure 7 comprises a first screw 70 and a first spring 71, the top of the mounting head 10 is provided with a first screw hole 100 communicating with the accommodating cavity 11, the first screw 70 is threadedly connected to the first screw hole 100, and the first spring 71 is abutted between one end of the first screw 70 and the top end of the upper mandrel 2; the second damping structure 8 comprises a second screw 80 and a second spring 81, the side wall bottom end of the accommodating cavity 11 is provided with an internal thread 110 matched with the second screw 80, and the second screw 80 is connected to the internal thread 110; the second spring 81 is abutted between one end of the second screw 80 and the bottom end of the lower mandrel 4. By adjusting the tightness of the first screw 70 and the second screw 80, the force of the first spring 71 and the second spring 81 abutting against the top end of the upper mandrel 2 and the bottom end of the lower mandrel 4 can be adjusted respectively, so as to adjust the damping size of the upper mandrel 2 and the lower mandrel 4, and the use is more flexible, which is suitable for main shafts with different rotating speeds and has better adaptability and good anti-vibration effect.

[0029] Based on the above embodiment, the side wall of the outer tool bar 1 is provided with a plurality of mounting holes 12 for mounting tool bits, which facilitates the installation of the tool bits.

[0030] Based on the above embodiment, the side wall of the upper core shaft 2 and the lower core shaft 4 is provided with a first annular groove 21 matched with the first rubber ring 5, the first rubber ring 5 is sleeved on the first annular groove 21, the first rubber ring 5 can be positioned, and the first rubber ring 5 is prevented from deviating.

[0031] Based on the above embodiment, as shown in the accompanying drawings, the periphery of the second circular groove 24 is provided with a second annular groove 25 matched with the third rubber ring 9, the third rubber ring 9 is arranged on the second annular groove 25, the third rubber ring 9 can be positioned, and the third rubber ring 9 is prevented from deviating. Figure 4

[0032] Based on the above embodiment, the middle core shaft 3 is tungsten steel or white steel, the upper core shaft 2 and the lower core shaft 4 are steel materials, the upper core shaft 2, the middle core shaft 3 and the lower core shaft 4 have different vibration frequencies when the cutter bar rotates, good anti-vibration effect is ensured, and the cost is reduced.

[0033] Based on the above embodiment, the center of the upper core shaft 2, the middle core shaft 3 and the lower core shaft 4 is provided with a through hole 22. The cooling water during processing can be discharged through the through hole 22, and the accumulated water in the accommodating cavity 11 is avoided.

[0034] The above embodiment only describes the preferred embodiment of the utility model, and does not limit the scope of the utility model. Without departing from the design spirit of the utility model, various deformations and improvements of the technical scheme of the utility model made by ordinary engineering and technical personnel in the art shall fall within the protection scope determined by the claims of the utility model.​

Claims

1. An anti-vibration tool bar for deep hole or deep face machining, characterized in that, The utility model provides a kind of outer cutter bar, upper mandrel, middle mandrel, lower mandrel, the top of the outer cutter bar is provided with mounting head, the inside of the outer cutter bar is provided with accommodating cavity, the bottom end of the accommodating cavity extends to the bottom end of the outer cutter bar, the upper mandrel, lower mandrel are movably arranged in the accommodating cavity, the sidewall of the upper mandrel, lower mandrel is all equipped with the first rubber ring that abuts on the sidewall of the accommodating cavity, the connecting place of the upper mandrel, lower mandrel and the middle mandrel is all provided with second rubber ring, the top of the outer cutter bar, bottom end is respectively provided with first damping structure, second damping structure, and the first damping structure, second damping structure respectively forms damping effect to the top of the upper mandrel, the bottom end of lower mandrel.

2. The anti-vibration tool bar for deep hole or deep face machining according to claim 1, characterized in that, The center of both ends of the middle mandrel is provided with a first circular table end, the center of the first circular table end is provided with a cylindrical part, the center of the bottom end of the upper mandrel and the top of the lower mandrel is provided with a first circular groove, the center of the first circular groove is provided with a second circular groove matched with the cylindrical part, the second rubber ring is sleeved on the first circular table end and abuts on the sidewall of the first circular groove, and the cylindrical part is sleeved with a third rubber ring abutting on the sidewall of the second circular groove.

3. The anti-vibration tool bar for deep hole or deep face machining according to claim 1, characterized in that, Both ends of the middle mandrel are provided with accommodating grooves, the bottom end of the upper mandrel and the top of the lower mandrel are provided with second circular table ends, the second rubber ring is sleeved on the second circular table end and abuts on the sidewall of the accommodating groove, and the accommodating groove is provided with an empty slot for avoiding the second circular table end.

4. The anti-vibration tool bar for deep hole or deep face machining according to claim 2 or 3, characterized in that, The first damping structure includes a first screw and a first spring, the top of the mounting head is provided with a first screw hole in communication with the accommodating cavity, the first screw is threadedly connected to the first screw hole, and the first spring is arranged between one end of the first screw and the top of the upper mandrel; the second damping structure includes a second screw and a second spring, the sidewall of the accommodating cavity is provided with an internal thread matched with the second screw at the bottom end, the second screw is connected to the internal thread, and the second spring is arranged between one end of the second screw and the bottom end of the lower mandrel.

5. The anti-vibration tool bar for deep hole or deep face machining according to claim 4, characterized in that, The sidewall of the outer cutter bar is provided with a plurality of mounting holes for mounting tool bits.

6. The anti-vibration tool bar for deep hole or deep face machining according to claim 5, characterized in that, The sidewall of the upper mandrel and the lower mandrel is provided with a first annular groove matched with the first rubber ring, and the first rubber ring is sleeved on the first annular groove.

7. The anti-vibration tool bar for deep hole or deep face machining according to claim 2, characterized in that, The periphery of the second circular groove is provided with a second annular groove matched with the third rubber ring, and the third rubber ring is arranged on the second annular groove.

8. The anti-vibration tool bar for deep hole or deep face machining according to claim 6, characterized in that, The middle mandrel is made of tungsten steel or white steel, and the upper mandrel and the lower mandrel are made of steel.

9. The anti-vibration tool bar for deep hole or deep face machining according to claim 8, characterized in that, A through hole is formed through the center of the upper mandrel, the middle mandrel and the lower mandrel.

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