Deep hole wall boring device

Abstract

The invention relates to the technical field of boring devices, and particularly discloses a deep hole wall boring device which comprises an operation table, a workpiece arranged on the operation table, a pair of supporting devices symmetrically arranged on the two sides of the workpiece, a boring rod arranged in the pair of supporting devices at the same time, a turning tool arranged on the side wall of the boring rod and a first driving device used for driving the boring rod to rotate. The second driving device is used for driving the boring rod to move along the axis of the boring rod; the workpiece is provided with a pair of processing holes which are partially overlapped; the supporting device comprises a supporting seat and a pair of supporting holes formed in the supporting seat; the diameter of the supporting holes is smaller than that of the machining holes, and the axes of the machining holes coincide with the axes of the supporting holes. The boring rod penetrates through the machining hole, and the two ends of the boring rod are rotationally arranged in the supporting holes. According to the deep hole wall boring device, deep hole boring operation can be more stably carried out, shaking and deviation of the boring rod are reduced, and the machining precision is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of boring devices, and more particularly, to a deep-hole wall boring device. Background Art

[0002] Boring refers to the further processing of holes forged, cast or drilled. Boring can enlarge the hole diameter, improve the accuracy, reduce the surface roughness, and can also better correct the deflection of the original hole axis.

[0003] Boring is divided into general boring and deep-hole boring. General boring can be carried out on an ordinary lathe, and the boring tool can be fixed on the tailstock of the lathe or on the small tool rest. Deep-hole boring requires a special deep-hole drilling and boring machine. The boring tool needs to be added with a boring rod, and a hydraulic pump station is also needed to use the coolant to remove the iron chips.

[0004] During the deep-hole boring process, for holes with a relatively deep depth, the workpiece itself usually has a large volume and weight. For such workpieces, it is not convenient to place them on the machine tool for processing. The boring device can be installed according to the position of the workpiece. However, in the case of a long boring rod, when the boring rod is not installed stably, the boring rod may have large jitter and deviation during the operation process. As a result, the accuracy of the processed hole is poor, and the wear of the boring rod and the turning tool is accelerated. Therefore, it is necessary to design a more stable boring device. Summary of the Invention

[0005] The purpose of the present invention is to provide a deep-hole wall boring device, which can perform deep-hole boring operations more stably, reduce the jitter and deviation of the boring rod, and improve the processing accuracy.

[0006] The present invention is realized through the following technical solutions: The deep-hole wall boring device of the present invention includes an operation table, a workpiece provided on the operation table, a pair of support devices symmetrically provided on both sides of the workpiece, a boring rod provided in both of the pair of support devices at the same time, a turning tool provided on the side wall of the boring rod, a first driving device for driving the boring rod to rotate, and a second driving device for driving the boring rod to move along its axis; the workpiece is provided with a pair of partially overlapping processing holes; the support device includes a support seat and a pair of support holes opened on the support seat; the diameter of the support hole is smaller than the diameter of the processing hole, and the axis of one of the processing holes coincides with the axis of one of the support holes; the boring rod is arranged through the processing hole, and both ends of the boring rod are rotatably arranged in the support holes.

[0007] Further, support rods are provided at both ends of the boring bar. The support rod close to the first driving device is connected with a driving rod, and the driving rod is connected with the first driving device; the support rod is coaxially arranged with the boring bar; the distance between the middle parts of a pair of the support rods is equal to the distance between the middle parts of a pair of the support seats; the diameter of the support rod is smaller than the width of the overlapping part of a pair of the support holes.

[0008] Further, the length of the support rod is greater than the width of the support seat.

[0009] Further, a through hole is formed in one side of the support seat close to the support hole, and the through hole is arranged through the axes of a pair of the support holes; through threaded holes are formed in the side walls of a pair of the support rods, and the threaded holes are perpendicular to and pass through the axis of the support rod; a screw rod is arranged in the through hole, and the screw rod is in threaded connection with the threaded hole; the distance between a pair of the threaded holes is equal to the distance between a pair of the through holes.

[0010] Further, a limiting sleeve is arranged on the outer wall of the support seat, and the limiting sleeve is arranged at the through hole and is coaxially arranged with the through hole.

[0011] Further, the support device further includes a pair of lifting components, and one lifting component is arranged on the lower side of one support hole; the lifting component is used for lifting the support rod.

[0012] Further, the lifting component includes a sliding groove formed in the lower side wall of the support hole, a support block slidably arranged in the sliding groove, and a telescopic cylinder arranged on the lower side of the support block.

[0013] Further, the upper side wall of the support block is arc-shaped and adapted to the inner wall of the support hole.

[0014] Further, the first driving device includes a sliding plate slidably arranged on the operating table, a motor horizontally arranged on the sliding plate, a first universal joint arranged on the output shaft of the motor, a second universal joint arranged at the end of the boring bar, and a telescopic joint for connecting the first universal joint and the second universal joint.

[0015] Further, the second driving device includes a motor arranged in the operating table, a lead screw connected to the output shaft of the motor, and a nut connected to the lead screw; the nut is connected to the lower side of the sliding plate.

[0016] The technical solution of the present invention has at least the following advantages and beneficial effects: When the deep-hole hole-wall boring device of the present invention is in use, the workpiece and two supporting devices are installed on the operating table, and then a boring bar is passed through the supporting holes of a pair of supporting devices and the machining hole of the workpiece at the same time. The two ends of the boring bar are supported by a pair of supporting devices, and the axis of the boring bar is made to coincide with the axis of the machining hole. Then the boring bar is connected to the first driving device and the second driving device. The first driving device drives the boring bar to rotate, and the second driving device drives the boring bar to move axially along it. During this process, the turning tool on the side of the boring bar bores the inner wall of the machining hole. The two supporting seats support the two ends of the boring bar, so that when boring a machining hole with a relatively deep depth, the stability of the boring bar during axial movement can be effectively ensured, the swing of the boring bar can be reduced, the precision of the machining hole can be improved, and the product quality can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. 1 is a schematic structural diagram of a state when the deep-hole hole-wall boring device provided by an embodiment of the present invention is in use;

[0018] Figure 2 FIG. 2 is a schematic structural diagram of a second state when the deep-hole hole-wall boring device provided by an embodiment of the present invention is in use;

[0019] Figure 3 FIG. Figure 1 3 is a cross-sectional view taken along line A-A in FIG. 2;

[0020] Figure 4 FIG. Figure 2 4 is a cross-sectional view taken along line B-B in FIG. 2;

[0021] Figure 5 FIG. Figure 4 5 is a schematic structural diagram of the next state of FIG. 1;

[0022] Figure 6 FIG. 6 is a schematic structural diagram of a boring bar part provided by an embodiment of the present invention;

[0023] Figure 7 FIG. 7 is a schematic structural diagram of a supporting device part provided by an embodiment of the present invention.

[0024] Reference numerals: 11 - operating table, 12 - workpiece, 13 - machining hole, 14 - boring bar, 15 - turning tool, 16 - connecting rod, 17 - threaded hole, 17 - driving rod, 20 - supporting device, 21 - supporting seat, 22 - supporting hole, 23 - through hole, 24 - screw rod, 25 - sleeve, 26 - sliding groove, 27 - supporting block, 28 - telescopic cylinder, 30 - first driving device, 31 - sliding plate, 32 - motor, 33 - first universal joint, 34 - second universal joint, 35 - telescopic joint. DETAILED DESCRIPTION OF THE INVENTION

[0025] Embodiment

[0026] The following is further described in conjunction with specific embodiments. As shown in the attached Figure 1 - attached Figure 7 As shown, the deep-hole hole wall boring device of this embodiment includes an operating table 11, a workpiece 12 disposed on the operating table 11, a pair of supporting devices 20 symmetrically disposed on both sides of the workpiece 12, a boring bar 14 disposed in the pair of supporting devices 20 at the same time, a turning tool 15 disposed on the side wall of the boring bar 14, a first driving device 30 for driving the boring bar 14 to rotate, and a second driving device for driving the boring bar 14 to move along its axis; the workpiece 12 is provided with a pair of partially overlapping processing holes 13; the supporting device 20 includes a supporting seat 21 and a pair of supporting holes 22 opened on the supporting seat 21; the diameter of the supporting hole 22 is smaller than the diameter of the processing hole 13, and the axes of one processing hole 13 and one supporting hole 22 coincide; the boring bar 14 is disposed through the processing hole 13, and both ends of the boring bar 14 are rotatably disposed in the supporting holes 22. Specifically, when in use, the workpiece 12 and the two supporting devices 20 are installed on the operating table 11, and then a boring bar 14 is passed through the supporting holes 22 of the pair of supporting devices 20 and the processing holes 13 of the workpiece 12 at the same time. The two ends of the boring bar 14 are supported by the pair of supporting devices 20, and the axis of the boring bar 14 is made to coincide with the axis of the processing hole 13. Then, the boring bar 14 is connected to the first driving device 30 and the second driving device. The first driving device 30 drives the boring bar 14 to rotate, and the second driving device drives the boring bar 14 to move along its axial direction. During this process, the turning tool 15 on the side of the boring bar 14 bores the inner wall of the processing hole 13 (as shown in the attached Figure 1 - attached Figure 2 figure). The two ends of the boring bar 14 are supported by the two supporting seats 21, so that when boring a processing hole 13 with a relatively deep depth, the stability of the boring bar 14 during axial movement can be effectively ensured, the swing of the boring bar 14 can be reduced, the precision of the processing hole 13 can be improved, and the product quality can be improved.

[0027] In this embodiment, support rods are provided at both ends of the boring bar 14. The support rod near the first driving device 30 is connected to a driving rod 17, and the driving rod 17 is connected to the first driving device 30; the support rod is coaxially arranged with the boring bar 14; the distance between the middle parts of a pair of support rods is equal to the distance between the middle parts of a pair of support seats 21; the diameter of the support rod is smaller than the width of the overlapping part of a pair of support holes 22. The length of the support rod is greater than the width of the support seat 21. Specifically, for two processing holes 13 with partial overlap, after one processing hole 13 is processed, it is not necessary to separate the boring bar 14 from the first driving device 30, and it is not necessary to pull out the boring bar 14 from the support device 20 and the processing hole 13. Only the second driving device needs to be used to continue pulling the driving rod 17 and the boring bar 14, so that the two support rods are respectively stuck in the two support holes 22, and then the boring bar 14 can be manually moved, so that the support rod passes through the connection between the two processing holes 13 and is moved to another processing hole 13 that has not been processed yet. In this way, the boring operation can be continued for the processing hole 13 that has not been processed, and it is not necessary to disassemble the boring bar 14.

[0028] In this embodiment, a through hole 23 is provided on one side of the support seat 21 close to the support hole 22, and the through hole 23 is arranged through the axes of a pair of support holes 22; through holes 17 are provided on the side walls of a pair of support rods, and the through holes 17 are perpendicular to and pass through the axis of the support rod; a screw rod 24 is arranged in the through hole 23, and the screw rod 24 is threadedly connected to the through hole 17; the distance between a pair of through holes 17 is equal to the distance between a pair of through holes 23. Specifically, when transferring the boring bar 14 and the support rod from one processing hole 13 to another processing hole 13, the screw rod 24 can be used to pass through the through hole 23 and then be threadedly connected to the through hole 17 on the support rod, and then the screw rod 24 is rotated, so that the support rod drives the boring bar 14 to move along the screw rod 24, so as to move to another processing hole 13. In this way, for a boring bar 14 with a large diameter, large length and large weight, it is not necessary to manually carry and transfer it, which can effectively reduce the intensity of manual labor.

[0029] In this embodiment, a limiting sleeve is provided on the outer wall of the support seat 21, and the limiting sleeve is arranged at the through hole 23 and is coaxially arranged with the through hole 23. Specifically, the limiting sleeve can improve the stability of the rotation of the screw rod 24 and improve its concentricity with the through hole 23.

[0030] In this embodiment, the support device 20 further includes a pair of lifting components, and one lifting component is arranged on the lower side of one support hole 22; the lifting component is used to lift the support rod. Specifically, the support rod can be lifted by the lifting component so that the through hole 17 coincides with the through hole 23 and then the screw rod 24 is screwed in.

[0031] The lifting component in this embodiment includes a sliding groove 26 formed in the lower side wall of the support hole 22, a support block 27 slidably disposed in the sliding groove 26, and a telescopic cylinder 28 disposed on the lower side of the support block 27. Specifically, when the connecting rod 16 enters the support hole 22, since the diameter of the connecting rod 16 is smaller than that of the support hole 22, the support rod will contact the lower side wall of the support hole 22. At this time, the telescopic cylinder 28 can be used to push the support block 27 upward, and then the support rod can be supported. Then, the driving rod 17 is slowly rotated so that the threaded hole 17 on the support rod coincides with the axis of the through hole 23, and then the screw rod 24 can be screwed into the threaded hole 17 (as shown in the attached Figure 4 - attached Figure 5 figure).

[0032] The upper side wall of the support block 27 in this embodiment is an arc adapted to the inner wall of the support hole 22.

[0033] The first driving device 30 in this embodiment includes a sliding plate 31 slidably disposed on the operating table 11, a motor 32 horizontally disposed on the sliding plate 31, a first universal joint 33 disposed on the output shaft of the motor 32, a second universal joint 34 disposed at the end of the boring bar 14, and a telescopic joint 35 for connecting the first universal joint 33 and the second universal joint 34. Specifically, the motor 32 is connected to the end of the boring bar 14 (actually the driving rod 17) through the first universal joint 33, the second universal joint 34, and the telescopic joint 35, which can avoid the vibration caused by the non - coincidence of the axis of the driving shaft of the motor 32 and the axis of the boring bar 14. And since the boring bar 14 needs to be transferred in position, the telescopic joint 35 is required for adjustment.

[0034] The second driving device in this embodiment includes a motor 32 disposed in the operating table 11, a lead screw connected to the output shaft of the motor 32, and a nut connected to the lead screw; the nut is connected to the lower side of the sliding plate 31. Specifically, the second driving device can use a conventional linear driving mechanism.

[0035] In summary, for the deep-hole hole wall boring device of this embodiment, when in use, the workpiece 12 and the two support devices 20 are installed on the operation table 11. Then, a boring bar 14 is simultaneously passed through the support holes 22 of a pair of support devices 20 and the machining hole 13 of the workpiece 12. The two ends of the boring bar 14 are supported by a pair of support devices 20, and the axis of the boring bar 14 is made to coincide with the axis of the machining hole 13. Then, the boring bar 14 is connected to the first driving device 30 and the second driving device. The first driving device 30 drives the boring bar 14 to rotate, and the second driving device drives the boring bar 14 to move axially. During this process, the turning tool 15 on the side of the boring bar 14 bores the inner wall of the machining hole 13. The two support seats 21 support the two ends of the boring bar 14, so that when boring a machining hole 13 with a relatively deep depth, the stability of the boring bar 14 during axial movement can be effectively ensured, the swing of the boring bar 14 can be reduced, the precision of the machining hole 13 can be improved, and the product quality can be improved.

[0036] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, various modifications and variations can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A deep-hole borehole wall boring device, characterized in that: It includes an operating table (11), a workpiece (12) disposed on the operating table (11), a pair of supporting devices (20) symmetrically disposed on both sides of the workpiece (12), a boring bar (14) simultaneously disposed in the pair of supporting devices (20), a turning tool (15) disposed on the side wall of the boring bar (14), a first driving device (30) for driving the boring bar (14) to rotate, and a second driving device for driving the boring bar (14) to move along its axis; The workpiece (12) is provided with a pair of partially overlapping machining holes (13); the supporting device (20) includes a supporting seat (21), and a pair of supporting holes (22) opened on the supporting seat (21); The diameter of the supporting hole (22) is smaller than the diameter of the machining hole (13), and the axes of one of the machining holes (13) and one of the supporting holes (22) coincide; the boring bar (14) is disposed through the machining hole (13), and both ends of the boring bar (14) are rotatably disposed in the supporting holes (22).

2. The deep hole wall boring device according to claim 1, characterized in that: Both ends of the boring bar (14) are provided with support rods, and a driving rod (17) is connected to the support rod near the first driving device (30), and the driving rod (17) is connected to the first driving device (30); the support rod is coaxially disposed with the boring bar (14); The distance between the middles of the pair of support rods is equal to the distance between the middles of the pair of supporting seats (21); the diameter of the support rod is smaller than the width of the overlapping part of the pair of supporting holes (22).

3. The deep-hole borehole wall boring device according to claim 2, characterized in that: The length of the support rod is greater than the width of the supporting seat (21).

4. The deep hole wall boring device according to claim 2, characterized in that: A through hole (23) is opened on one side of the supporting seat (21) close to the supporting hole (22), and the through hole (23) is disposed through the axes of the pair of supporting holes (22); Threaded holes (17) penetrating through are opened on the side walls of the pair of support rods, and the threaded holes (17) are vertically disposed and penetrate through the axis of the support rod; a screw rod (24) is disposed in the through hole (23), and the screw rod (24) is threadedly connected to the threaded hole (17); the distance between the pair of threaded holes (17) is equal to the distance between the pair of through holes (23).

5. The deep-hole hole-wall boring device according to claim 4, characterized in that: A limiting sleeve is disposed on the outer wall of the supporting seat (21), and the limiting sleeve is disposed at the through hole (23) and is coaxially disposed with the through hole (23).

6. The deep-hole hole wall boring device according to claim 4, characterized in that: The supporting device (20) further includes a pair of lifting components, and one of the lifting components is disposed below one of the supporting holes (22); the lifting component is used for lifting the support rod.

7. The deep-hole hole wall boring device according to claim 6, characterized in that: The lifting component includes a sliding groove (26) opened on the lower side wall of the supporting hole (22), a supporting block (27) slidably disposed in the sliding groove (26), and a telescopic cylinder (28) disposed on the lower side of the supporting block (27).

8. The deep-hole hole-wall boring device according to claim 7, characterized in that: The upper side wall of the supporting block (27) is an arc shape adapted to the inner wall of the supporting hole (22).

9. The deep-hole borehole wall boring device according to claim 1, characterized in that: The first driving device (30) includes a sliding plate (31) slidably disposed on the operation table (11), a motor (32) horizontally disposed on the sliding plate (31), a first universal joint (33) disposed on the output shaft of the motor (32), a second universal joint (34) disposed at the end of the boring bar (14), and a telescopic joint (35) for connecting the first universal joint (33) and the second universal joint (34).

10. The deep hole wall boring device according to claim 9, characterized in that: The second driving device includes a motor (32) disposed in the operation table (11), a lead screw connected to the output shaft of the motor (32), and a nut connected to the lead screw; the nut is connected to the lower side of the sliding plate (31).

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