Small hole device for oil supply during deep hole machining

Abstract

The utility model discloses a pinhole device for oil supply during deep hole processing, which comprises a cutter bar, a guide device, a support device and a pinhole protection connecting device are arranged on the cutter bar, the guide device comprises a combined bearing inner ring, and a conical disc is fixedly connected on the outer wall of the combined bearing inner ring through a bolt. The small hole protection connecting device integrally adopts a slender shaft structure to reduce the influence of oil pressure, the guide device and the supporting device are reduced in the same proportion on the original basis and are matched with the small hole connection protection device, the original functions are played at the same time, the contact area between cutting oil and a small hole device cavity is reduced, and the machining efficiency is improved. Therefore, oil pressure formed by cutting oil in the cavity is reduced, a gap, caused by too large oil pressure, of the contact face of the cutter bar and the workpiece is avoided, it is guaranteed that the cutter bar and the workpiece are tightly attached, the workpiece is prevented from falling off through positioning and clamping of the conical disc and the workpiece, deflection of the cutter bar during machining is avoided, and a high-precision guide track is established.

Description

TECHNICAL FIELD

[0001] The utility model belongs to deep hole machining technical field, and specifically relates to a small hole device for oiling when deep hole machining. BACKGROUND

[0002] Deep hole machining adopts oiling by oiling device, and cutting fluid can be accurately delivered to the cutting edge part of the tool during machining. However, when machining a workpiece with 20mm <= d <= 40mm, the cutting oil pressure in the oiling device cavity is too large, so that the tool cannot be tightly pressed against the workpiece, resulting in that deep hole machining cannot be normally carried out. SUMMARY

[0003] To solve the above technical problems, one technical scheme of the utility model is to provide a small hole device for oiling when deep hole machining, comprising a tool bar, a guide device, a supporting device and a small hole protection connecting device are arranged on the tool bar.

[0004] The guide device comprises a combined bearing inner ring, a conical disc is fixedly connected to the outer wall of the combined bearing inner ring through bolts, a guide sleeve is rotatably arranged in the combined bearing inner ring, a deep groove ball bearing one, a thrust ball bearing and a deep groove ball bearing two are sequentially arranged on the outer wall of the combined bearing inner ring, and the two ends of the thrust ball bearing are separated from the deep groove ball bearing one and the deep groove ball bearing two by a retainer.

[0005] The supporting device comprises a supporting sleeve combined bearing inner ring, a swelling sleeve is arranged on the inner wall of the supporting sleeve combined bearing inner ring, a shaft Y-shaped sealing ring is arranged on the side inner wall of the swelling sleeve, a nylon conical sleeve and a supporting sleeve are sequentially arranged on the inner wall of the supporting sleeve combined bearing inner ring, two angular contact ball bearings are arranged on the outer wall of the supporting sleeve combined bearing inner ring, and a sleeve is arranged between the two angular contact ball bearings.

[0006] The small hole protection connecting device comprises a double-sided connecting flange, a drill rod side connecting disc, a workpiece side connecting disc and a combined bearing outer ring.

[0007] Through the above technical scheme, the guide device and the supporting device are closely installed in the small hole protection connecting device through the cooperation of the guide device, the supporting device and the small hole protection connecting device, the contact area of the cutting oil and the small hole device cavity can be effectively reduced, so that the oil pressure of the cutting oil in the cavity is reduced, the gap of the contact surface of the tool bar and the workpiece caused by the excessive oil pressure is avoided, the close contact of the two is ensured, the cutting oil spraying is avoided, the loss is reduced, and the utilization efficiency is improved.

[0008] The utility model is further provided with an elongated shaft structure, and the supporting device and the guide device are reduced in size by the same ratio on the basis of the conventional structure.

[0009] By the above technical scheme, the device can be suitable for small hole machining.

[0010] The utility model further provides for, the guiding device still includes two O type sealing rings, one O type sealing ring is arranged between the guide bush and the combined bearing inner race, and the other O type sealing ring is arranged between the combined bearing inner race and the conical disc.

[0011] Through the above technical scheme, the O type sealing ring can increase the connection tightness between the device.

[0012] The utility model further provides for, the outer wall of the combined bearing inner race is provided with end face sealing ring, and the deep groove ball bearing one, the thrust ball bearing and the deep groove ball bearing two are fixedly connected with the combined bearing outer ring.

[0013] The utility model further provides for, the supporting device still includes support bush outer circle, YSR self locking nut and support bush combined bearing outer ring.

[0014] The utility model further provides for, the YSR self locking nut is arranged on the side wall of support bush combined bearing inner race, and the support bush combined bearing outer ring is arranged on the outer wall of angular contact ball bearing.

[0015] The utility model further provides for, the workpiece side connecting disc is arranged on the outer wall of combined bearing outer ring.

[0016] The utility model has the advantages of the following:

[0017] The small hole protection connecting device adopts the structure of the slender shaft to reduce the influence of oil pressure, the guiding device and the supporting device are reduced in the same proportion on the basis of the original, adapt to the small hole connecting protection device, play the original function, reduce the contact area of cutting oil and small hole device cavity, thereby reducing the oil pressure formed by cutting oil in the cavity, avoid the gap of the contact surface of the cutter bar and the workpiece due to the excessive oil pressure, ensure that the two are closely attached, and the positioning and clamping of the conical disc and the workpiece prevent the workpiece from falling off, avoid the deflection of the cutter bar during machining, and establish a high-precision guide track. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the overall structure schematic diagram of the small hole device for oiling during deep hole machining of the utility model;

[0019] Figure 2 It is the guiding device structure diagram of the small hole device for oiling during deep hole machining of the utility model;

[0020] Figure 3 It is the support structure schematic diagram of the small hole device for oiling during deep hole machining of the utility model;

[0021] Figure 4The utility model relates to a small hole protection connecting device structure schematic drawing for small hole device of oiling when deep hole processing.

[0022] Fig. 01, guiding device, 11, end face sealing ring, 12, combined bearing inner ring, 13, guiding sleeve, 14, baffle, 15, conical disc, 02, small hole protection connecting device, 21, workpiece side connecting disc, 22, combined bearing outer ring, 23, drill rod side connecting disc, 24, double-sided connecting flange, 03, supporting device, 31, supporting sleeve combined bearing inner ring, 32, shaft Y type sealing ring, 33, supporting sleeve outer circle, 34, sleeve, 35, nylon conical sleeve, 36, supporting sleeve, 37, YSR self-locking nut, 38, expanding sleeve, 39, supporting sleeve combined bearing outer ring, 100, deep groove ball bearing one, 200, thrust ball bearing, 300, deep groove ball bearing two, 400, angular contact ball bearing, 104, O type sealing ring. DETAILED DESCRIPTION

[0023] In order to make the utility model purposes, technical schemes and advantages more clearly, the following will be combined with the drawings and examples, and the utility model will be further described in detail. It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0024] As Figures 1-4 The utility model relates to a small hole device for oiling when deep hole processing, including cutter bar, be provided with guiding device 01, supporting device 03 with small hole protection connecting device 02 on cutter bar, small hole protection connecting device 02 adopts an elongated shaft structure, supporting device 03 with guiding device 01 is reduced on traditional structure with the same proportion, and the same proportion reduced supporting device 03, guiding device 01 with small hole protection connecting device 02 are closely connected, can make the device applicable to small hole processing, reduce the contact area of cutting oil and small hole device cavity, thereby reducing the oil pressure formed in the cavity by cutting oil, avoid the gap of cutter bar and workpiece contact surface due to excessive oil pressure, ensure that the two are closely attached, and the positioning clamping of conical disc 15 and workpiece prevents the workpiece from falling off, simultaneously avoids the deflection of cutter bar when processing, establishes high-precision guiding track.

[0025] The guide device 01 comprises a combined bearing inner ring 12, a taper disc 15 is fixedly connected to the outer wall of the combined bearing inner ring 12 by bolts, the taper disc 15 can be clamped with the workpiece, when the workpiece indirectly drives the rotation of the guide sleeve 13, the guide sleeve 13 is in close contact with the outer wall of the cutter bar, and the combined bearing outer ring 22, the combined bearing inner ring 12, the deep groove ball bearing one 100, the thrust ball bearing 200 and the deep groove ball bearing two 300 have good cooperation relationship, so that the guide sleeve 13 can be effectively guided, and the cutter bar is prevented from being deflected during machining, the guide sleeve 13 is rotatably arranged in the combined bearing inner ring 12, the deep groove ball bearing one 100, the thrust ball bearing 200 and the deep groove ball bearing two 300 are sequentially arranged on the outer wall of the combined bearing inner ring 12, and the two ends of the thrust ball bearing 200 are separated from the deep groove ball bearing one 100 and the deep groove ball bearing two 300 by the retainer 14.

[0026] The guide device 01 further comprises two O-shaped sealing rings 104, one O-shaped sealing ring 104 is arranged between the guide sleeve 13 and the combined bearing inner ring 12, and the other O-shaped sealing ring 104 is arranged between the combined bearing inner ring 12 and the taper disc 15.

[0027] The support device 03 comprises a support sleeve combined bearing inner ring 31, a swelling sleeve 38 is arranged on the inner wall of the support sleeve combined bearing inner ring 31, a shaft Y-shaped sealing ring 32 is arranged on the side inner wall of the swelling sleeve 38, a nylon taper sleeve 35 and a support sleeve 36 are sequentially arranged on the inner wall of the support sleeve combined bearing inner ring 31, the support sleeve 36 is in close contact with the outer wall of the cutter bar in use, so that the cutter bar is prevented from jumping up and down and axially moving during machining, and a good supporting effect is achieved, two angular contact ball bearings 400 are arranged on the outer wall of the support sleeve combined bearing inner ring 31, and a sleeve 34 is arranged between the two angular contact ball bearings 400.

[0028] The small hole protection connecting device 02 comprises a double-sided connecting flange 24, a drill rod side connecting disc 23, a workpiece side connecting disc 21 and a combined bearing outer ring 22, the workpiece side connecting disc 21 is arranged on the outer wall of the combined bearing outer ring 22, an end face sealing ring 11 is arranged on the outer wall of the combined bearing inner ring 12, the workpiece side connecting disc 21 and the drill rod side connecting disc 23 on the two sides of the small hole protection connecting device 02 can stably connect the boss on the periphery of the oil supply device, the stability of the small hole device during machining is improved, the combined bearing outer ring 22 adopts the structure of an elongated shaft, so that the cutting oil capacity is reduced, the oil pressure is greatly reduced, the right double-sided connecting flange 24 can be connected with the support device 03 by means of threads, and the support device 03 is prevented from falling off during machining.

[0029] The deep groove ball bearing one 100, the thrust ball bearing 200 and the deep groove ball bearing two 300 are fixedly connected with the combined bearing outer ring 22, and the supporting device 03 further comprises a supporting sleeve outer circle 33, a YSR self-locking nut 37 and a supporting sleeve combined bearing outer ring 39, the YSR self-locking nut 37 is arranged on the sidewall of the supporting sleeve combined bearing inner ring 31, and the supporting sleeve combined bearing outer ring 39 is arranged on the outer wall of the angular contact ball bearing 400.

[0030] The working principle of the utility model is as follows: when deep hole machining is carried out, the guiding device 01, the supporting device 03 and the small hole protection connecting device 02 are installed as a whole, and are installed on the cutter bar, the supporting device 03 is tightly attached to the outer wall of the cutter bar when the cutter bar is used, so that the cutter bar is prevented from jumping up and down and axially moving during machining, and good supporting effect is achieved, the workpiece is clamped and positioned by the taper disc 15, and the guiding sleeve 13 is indirectly driven to rotate, the guiding sleeve 13 is attached to the outer wall of the cutter bar, the combined bearing outer ring 22, the combined bearing inner ring 12 and the deep groove ball bearing one 100, the thrust ball bearing 200 and the deep groove ball bearing two 300 have good cooperation, so that the guiding sleeve 13 can be effectively guided, the cutter bar is prevented from being deflected during machining, the whole formed by the combination of the guiding device 01, the supporting device 03 and the small hole protection connecting device 02 can reduce the contact area of cutting oil and the small hole device cavity, so that the oil pressure formed by the cutting oil in the cavity is reduced, the gap of the contact surface of the cutter bar and the workpiece caused by excessive oil pressure is avoided, the cutter bar and the workpiece are tightly attached, the taper disc 15 clamps and positions the workpiece to prevent the workpiece from falling off, and the cutter bar is prevented from being deflected during machining, and a high-precision guiding track is established.

[0031] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process transformation according to the content of the utility model specification and the drawings, or direct or indirect application in other related technical fields, is also included in the patent protection range of the utility model.

Claims

1. A small hole device for oiling during deep hole machining, comprising a tool bar, characterized in that: The cutter bar is provided with a guide device (01), a supporting device (03) and a small hole protection connecting device (02); The guide device (01) comprises a combined bearing inner ring (12), a taper disc (15) is fixedly connected to the outer wall of the combined bearing inner ring (12) through a bolt, a guide sleeve (13) is rotatably arranged in the combined bearing inner ring (12), a deep groove ball bearing one (100), a thrust ball bearing (200) and a deep groove ball bearing two (300) are sequentially arranged on the outer wall of the combined bearing inner ring (12), the two ends of the thrust ball bearing (200) are separated from the deep groove ball bearing one (100) and the deep groove ball bearing two (300) through a retainer (14); The supporting device (03) comprises a supporting sleeve combined bearing inner ring (31), a swelling sleeve (38) is arranged on the inner wall of the supporting sleeve combined bearing inner ring (31), an axial Y-shaped sealing ring (32) is arranged on the side inner wall of the swelling sleeve (38), a nylon taper sleeve (35) and a supporting sleeve (36) are sequentially arranged on the inner wall of the supporting sleeve combined bearing inner ring (31), two angular contact ball bearings (400) are arranged on the outer wall of the supporting sleeve combined bearing inner ring (31), and a sleeve (34) is arranged between the two angular contact ball bearings (400). The small hole protection connecting device (02) comprises a double-sided connecting flange (24), a drill rod side connecting disc (23), a workpiece side connecting disc (21) and a combined bearing outer ring (22).

2. The small hole device for oiling during deep hole machining according to claim 1, wherein, The small hole protection connecting device (02) adopts an elongated shaft structure, and the supporting device (03) and the guide device (01) are subjected to proportional reduction processing on the traditional structure.

3. The small hole device for oiling during deep hole machining according to claim 1, wherein, The guide device (01) further comprises two O-shaped sealing rings (104), one of which is arranged between the guide sleeve (13) and the combined bearing inner ring (12), and the other is arranged between the combined bearing inner ring (12) and the taper disc (15).

4. The small hole device for oiling during deep hole machining according to claim 1, wherein, An end face sealing ring (11) is arranged on the outer wall of the combined bearing inner ring (12), and the deep groove ball bearing one (100), the thrust ball bearing (200) and the deep groove ball bearing two (300) are fixedly connected with the combined bearing outer ring (22).

5. The oil feeding small hole device for deep hole machining according to claim 1, wherein The supporting device (03) further comprises a supporting sleeve outer circle (33), a YSR self-locking nut (37) and a supporting sleeve combined bearing outer ring (39).

6. The oil feeding small hole device for deep hole machining according to claim 5, wherein The YSR self-locking nut (37) is arranged on the side wall of the supporting sleeve combined bearing inner ring (31), and the supporting sleeve combined bearing outer ring (39) is arranged on the outer wall of the angular contact ball bearing (400).

7. The oil feeding small hole device for deep hole machining according to claim 1, wherein The workpiece side connecting disc (21) is arranged on the outer wall of the combined bearing outer ring (22).

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