Boring and milling head

Abstract

The utility model relates to the field of machining, and discloses a boring and milling head which comprises a box body, a hollow main shaft, a tool bit, a supporting mechanism I, a supporting mechanism II and a driving mechanism, the first supporting mechanism comprises a bidirectional thrust angular contact bearing, a first double-row cylindrical roller bearing, a first adjusting pad and a first locking assembly. The second supporting mechanism comprises a second double-row cylindrical roller bearing and a second locking assembly. Through the arrangement of the first supporting mechanism and the second supporting mechanism, the rigidity of the hollow main shaft can be remarkably improved, and the problem that the hollow main shaft is prone to deformation and cannot work normally during heavy-load cutting is solved.

Description

Technical Field

[0001] The utility model relates to the field of mechanical processing, in particular to a boring and milling head. Background Art

[0002] A boring and milling head is a machine tool accessory used for machining holes. It usually includes a box, a spindle rotatably connected to the box, a cutter head connected to the front end of the spindle, and a driving mechanism arranged on the box. The spindle is driven to rotate by the driving mechanism, and the spindle drives the cutter head to rotate synchronously to machine the workpiece.

[0003] In order to enable the boring and milling head to have the function of processing inner holes, surfaces, grooves, and slots of special shapes, the Chinese patent with the announcement number CN103386498A discloses a new type of boring and milling head, including a spindle motor, a gear mechanism, a spindle, a sliding frame, a sliding mounting seat, and a boring and milling head. The spindle motor is connected to the spindle through the gear mechanism, one end of the spindle is fixedly connected to a sliding frame, the sliding frame is equipped with a sliding mounting seat, the sliding mounting seat is provided with a boring and milling head, the spindle is hollow, and a secondary shaft is provided inside, the secondary shaft is connected to the servo motor through a coupling and a reducer, and the other end of the secondary shaft is connected to the lead screw through a bevel gear mechanism, an adjusting shaft, a small gear, and a large gear; although the patent can process various irregular and complex-shaped inner holes, surfaces, grooves, and slots through the arrangement of the above structure, the rigidity of the spindle will be significantly reduced after it is processed into a hollow shape. When heavy-load cutting is performed, the spindle is easily deformed and its normal use is affected. Utility Model Content

[0004] Based on the above problems, the purpose of the utility model is to provide a boring and milling head to solve the problems existing in the above prior art.

[0005] The utility model adopts the following technical solutions:

[0006] The utility model provides a boring and milling head, comprising a box body, a hollow main shaft is rotatably connected in the box body, the front end of the hollow main shaft penetrates the outside of the box body and is connected to a cutter head, and further comprises:

[0007] A support mechanism 1, wherein the support mechanism 1 is arranged at the front side of the hollow main shaft, and the support mechanism 1 comprises a bidirectional thrust angular contact bearing and a double-row cylindrical roller bearing 1 which are sequentially sleeved on the outer periphery of the hollow main shaft from back to front, wherein the front end of the double-row cylindrical roller bearing 1 abuts against the box body, and the rear end of the double-row cylindrical roller bearing 1 abuts against the bidirectional thrust angular contact bearing through an adjustment pad 1; a locking assembly 1 is arranged at the rear side of the bidirectional thrust angular contact bearing, wherein the locking assembly 1 is connected to the hollow main shaft, and the locking assembly 1 abuts against the bidirectional thrust angular contact bearing;

[0008] A second supporting mechanism, the second supporting mechanism is arranged at the rear side of the hollow main shaft, the second supporting mechanism comprises a second double-row cylindrical roller bearing sleeved on the outer periphery of the hollow main shaft, a second locking assembly is arranged at the rear side of the second double-row cylindrical roller bearing, the second locking assembly is connected to the hollow main shaft, and the two sides of the second double-row cylindrical roller bearing are respectively against the box body and the second locking assembly;

[0009] A driving mechanism is arranged on the box body, and a power output end of the driving mechanism is connected to the hollow main shaft.

[0010] Furthermore, the locking assembly 1 includes a locking nut 1 threadedly connected to the outer periphery of the hollow main shaft, and an adjustment pad 2 is arranged between the locking nut 1 and the bidirectional thrust angular contact bearing, and the locking nut 1 is abutted against the bidirectional thrust angular contact bearing through the adjustment pad 2.

[0011] Furthermore, the locking assembly 2 includes a locking nut 2 threadedly connected to the outer periphery of the hollow main shaft, and an adjustment pad 3 is arranged between the locking nut 2 and the double-row cylindrical roller bearing 2, and the locking nut 2 is abutted against the double-row cylindrical roller bearing 2 through the adjustment pad 3.

[0012] Furthermore, the driving mechanism includes a transmission shaft 1, a transmission shaft 2 and a transmission shaft 3 which are arranged in parallel and spaced apart from each other, and the transmission shaft 1, the transmission shaft 2 and the transmission shaft 3 are respectively rotatably connected in the box; a rotating driving component is provided on the outer wall of the box, and the output shaft of the rotating driving component is dynamically connected to one end of the transmission shaft 1; the transmission shaft 1 is connected to the transmission shaft 2 through a transmission component 1, the transmission shaft 2 is connected to the transmission shaft 3 through a transmission component 2, and the transmission shaft 3 is connected to the hollow main shaft through a transmission component 3.

[0013] Furthermore, the transmission component 1 includes a gear 1 which is sleeved on the outer periphery of the transmission shaft 1, one side of the gear 1 is meshingly connected with a gear 2, and the gear 2 is sleeved on the outer periphery of the transmission shaft 2.

[0014] Furthermore, the transmission component 2 includes a gear 3 which is sleeved on the outer periphery of the transmission shaft 2, one side of the gear 3 is meshingly connected with a gear 4, and the gear 4 is sleeved on the outer periphery of the transmission shaft 3.

[0015] Furthermore, the transmission component three includes a gear five mounted on the outer periphery of the transmission shaft three, one side of the gear five is meshedly connected with a gear six, and the gear six is ​​mounted on the outer periphery of the hollow main shaft.

[0016] Compared with the prior art, the beneficial technical effects of the utility model are:

[0017] By setting the support mechanism 1 and the support mechanism 2, the rigidity of the hollow spindle can be significantly improved, and the problem that the hollow spindle is easily deformed and cannot work normally during heavy-load cutting is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a cross-sectional view of the boring and milling head of the utility model;

[0020] Figure 2 for Figure 1 A magnified view of part A;

[0021] Figure 3 for Figure 1 Enlarged view of part B.

[0022] Explanation of the reference numerals in the accompanying drawings: 1. housing; 2. hollow main shaft; 3. supporting mechanism one; 31. bidirectional thrust angular contact bearing; 32. double-row cylindrical roller bearing one; 33. adjusting pad one; 34. locking assembly one; 341. locking nut one; 342. adjusting pad two; 4. supporting mechanism two; 41. double-row cylindrical roller bearing two; 42. locking assembly two; 421. locking nut two; 422. adjusting pad three; 5. driving mechanism; 51. transmission shaft one; 52. transmission shaft two; 53. transmission shaft three; 54. rotating driving component; 55. transmission assembly one; 551. gear one; 552. gear two; 56. transmission assembly two; 561. gear three; 562. gear four; 57. transmission assembly three; 571. gear five; 572. gear six. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0024] like Figure 1-Figure 3As shown, this embodiment discloses a boring and milling head, including a box body 1, a hollow spindle 2 is rotatably connected in the box body 1, the front end of the hollow spindle 2 passes through the outside of the box body 1 and is connected to a cutter head, a support mechanism 3 is arranged on the front side of the hollow spindle 2, and the support mechanism 3 includes a bidirectional thrust angular contact bearing 31 and a double-row cylindrical roller bearing 32 which are sequentially mounted on the outer periphery of the hollow spindle 2 from back to front, the front end of the outer ring of the double-row cylindrical roller bearing 32 is against the box body 1, and the rear end of the outer ring of the double-row cylindrical roller bearing 32 is connected to the bidirectional thrust angular contact bearing 31 through an adjustment pad 33. The outer rings of the bearings 31 are against each other; a locking assembly 34 is provided on the rear side of the double-way thrust angular contact bearing 31, the locking assembly 34 is connected to the hollow main shaft 2, and the locking assembly 34 is against the inner ring of the double-way thrust angular contact bearing 31; it should be noted that when the hollow main shaft 2 rotates, the inner ring of the double-row cylindrical roller bearing 32, the inner ring of the double-way thrust angular contact bearing 31 and the locking assembly 34 rotate with the hollow main shaft 2, and the outer ring of the double-row cylindrical roller bearing 32, the outer ring of the double-way thrust angular contact bearing 31 and the adjustment pad 33 do not rotate.

[0025] A supporting mechanism 4 is provided on the rear side of the hollow main shaft 2, and the supporting mechanism 4 includes a double-row cylindrical roller bearing 41 mounted on the outer circumference of the hollow main shaft 2, and a locking assembly 42 is provided on the rear side of the double-row cylindrical roller bearing 41, and the locking assembly 42 is connected to the hollow main shaft 2, and the two sides of the double-row cylindrical roller bearing 41 are respectively against the box body 1 and the locking assembly 42; it should be noted that the front side of the outer ring of the double-row cylindrical roller bearing 41 is against the box body 1, and the rear side of the inner ring of the double-row cylindrical roller bearing 41 is against the locking assembly 42; when the hollow main shaft 2 rotates, the inner ring of the double-row cylindrical roller bearing 41 and the locking assembly 42 rotate with the hollow main shaft 2, and the outer ring of the double-row cylindrical roller bearing 41 does not rotate.

[0026] The housing 1 is provided with a driving mechanism 5, and a power output end of the driving mechanism 5 is connected to the hollow main shaft 2. The driving mechanism 5 can drive the hollow main shaft 2 to rotate.

[0027] By adopting this solution, the rigidity of the hollow spindle 2 can be significantly improved by providing the support mechanism 1 3 and the support mechanism 2 4, thereby solving the problem that the hollow spindle 2 is easily deformed and cannot work normally during heavy-load cutting.

[0028] Further optimizing the solution, the locking assembly 34 includes a locking nut 341 threadedly connected to the outer periphery of the hollow main shaft 2, and an adjustment pad 342 is provided between the locking nut 341 and the bidirectional thrust angular contact bearing 31, and the locking nut 341 is abutted against the inner ring of the bidirectional thrust angular contact bearing 31 through the adjustment pad 342. The setting of the locking nut 341 and the adjustment pad 342 can achieve the effect of tightening the inner ring of the bidirectional thrust angular contact bearing 31.

[0029] Further optimizing the scheme, the locking assembly 2 42 includes a locking nut 2 421 threadedly connected to the outer periphery of the hollow main shaft 2, and an adjusting washer 3 422 is arranged between the locking nut 2 421 and the double-row cylindrical roller bearing 2 41, and the locking nut 2 421 abuts against the inner ring of the double-row cylindrical roller bearing 2 41 through the adjusting washer 3 422. By setting the locking nut 2 421 and the adjusting washer 3 422, the inner ring of the double-row cylindrical roller bearing 2 41 can be tightened.

[0030] A further optimized solution is that the driving mechanism 5 includes a transmission shaft 1 51, a transmission shaft 2 52 and a transmission shaft 3 53 which are arranged in parallel and spaced apart from each other in an upper and lower direction, and the transmission shaft 1 51, the transmission shaft 2 52 and the transmission shaft 3 53 are respectively rotatably connected in the box body 1; a rotating driving component 54 is fixedly mounted on the outer wall of the box body 1, and the output shaft of the rotating driving component 54 is dynamically connected to one end of the transmission shaft 1 51; the transmission shaft 1 51 is connected to the transmission shaft 2 52 through a transmission assembly 1 55, the transmission shaft 2 52 is connected to the transmission shaft 3 53 through a transmission assembly 2 56, and the transmission shaft 3 53 is connected to the hollow main shaft 2 through a transmission assembly 3 57.

[0031] In this embodiment, the rotating drive component 54 is configured as a motor, which drives the transmission shaft 1 51 to rotate through the rotating drive component 54. The transmission shaft 1 51 drives the transmission shaft 2 52 to rotate synchronously through the transmission component 1 55. The transmission shaft 2 52 drives the transmission shaft 3 53 to rotate synchronously through the transmission component 2 56. The transmission shaft 3 53 drives the hollow main shaft 2 to rotate synchronously through the transmission component 3 57.

[0032] Further optimization scheme, transmission assembly 1 55 includes gear 1 551 fixedly mounted on the outer periphery of transmission shaft 1 51, one side of gear 1 551 is meshedly connected with gear 2 552, gear 2 552 is fixedly mounted on the outer periphery of transmission shaft 2 52; transmission assembly 2 56 includes gear 3 561 fixedly mounted on the outer periphery of transmission shaft 2 52, one side of gear 3 561 is meshedly connected with gear 4 562, gear 4 562 is fixedly mounted on the outer periphery of transmission shaft 3 53; transmission assembly 3 57 includes gear 5 571 fixedly mounted on the outer periphery of transmission shaft 3 53, one side of gear 571 is meshedly connected with gear 6 572, gear 6 572 is fixedly mounted on the outer periphery of hollow main shaft 2. By setting gear 1 551, gear 2 552, gear 3 561, gear 4 562, gear 5 571, gear 6 572, it is possible to achieve the effect of rotating driving component 54 driving hollow main shaft 2 to rotate synchronously.

[0033] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A boring and milling head, comprising a housing (1), a hollow spindle (2) rotatably connected to the housing (1), a front end of the hollow spindle (2) passing through the outside of the housing (1) and connected to a cutter head, Features: Also includes: A support mechanism (3), wherein the support mechanism (3) is arranged at the front side of the hollow main shaft (2), and the support mechanism (3) comprises a bidirectional thrust angular contact bearing (31) and a double-row cylindrical roller bearing (32) which are sequentially mounted on the outer periphery of the hollow main shaft (2) from back to front, wherein the front end of the double-row cylindrical roller bearing (32) abuts against the housing (1), and the rear end of the double-row cylindrical roller bearing (32) abuts against the bidirectional thrust angular contact bearing (31) via an adjustment pad (33); a locking assembly (34) is arranged at the rear side of the bidirectional thrust angular contact bearing (31), wherein the locking assembly (34) is connected to the hollow main shaft (2), and the locking assembly (34) abuts against the bidirectional thrust angular contact bearing (31); A second supporting mechanism (4), the second supporting mechanism (4) being arranged at the rear side of the hollow main shaft (2), the second supporting mechanism (4) comprising a second double-row cylindrical roller bearing (41) sleeved on the outer periphery of the hollow main shaft (2), a second locking assembly (42) being arranged at the rear side of the second double-row cylindrical roller bearing (41), the second locking assembly (42) being connected to the hollow main shaft (2), and the two sides of the second double-row cylindrical roller bearing (41) respectively abutting against the box body (1) and the second locking assembly (42); A driving mechanism (5), wherein the driving mechanism (5) is arranged on the box body (1), and a power output end of the driving mechanism (5) is connected to the hollow main shaft (2).

2. The boring and milling head according to claim 1, Features: The locking assembly (34) comprises a locking nut (341) threadedly connected to the outer periphery of the hollow main shaft (2); an adjustment pad (342) is provided between the locking nut (341) and the bidirectional thrust angular contact bearing (31); the locking nut (341) is abutted against the bidirectional thrust angular contact bearing (31) via the adjustment pad (342).

3. The boring and milling head according to claim 1, Features: The locking assembly 2 (42) comprises a locking nut 2 (421) threadedly connected to the outer periphery of the hollow main shaft (2), an adjustment washer 3 (422) is arranged between the locking nut 2 (421) and the double-row cylindrical roller bearing 2 (41), and the locking nut 2 (421) is abutted against the double-row cylindrical roller bearing 2 (41) through the adjustment washer 3 (422).

4. The boring and milling head according to claim 1, Features: The driving mechanism (5) comprises a transmission shaft 1 (51), a transmission shaft 2 (52) and a transmission shaft 3 (53) which are arranged in parallel and spaced apart from each other, and the transmission shaft 1 (51), the transmission shaft 2 (52) and the transmission shaft 3 (53) are respectively rotatably connected in the housing (1); a rotation driving component (54) is arranged on the outer wall of the housing (1), and the output shaft of the rotation driving component (54) is dynamically connected to one end of the transmission shaft 1 (51); the transmission shaft 1 (51) is connected to the transmission shaft 2 (52) through a transmission assembly 1 (55), the transmission shaft 2 (52) is connected to the transmission shaft 3 (53) through a transmission assembly 2 (56), and the transmission shaft 3 (53) is connected to the hollow main shaft (2) through a transmission assembly 3 (57).

5. The boring and milling head according to claim 4, Features: The transmission assembly 1 (55) includes a gear 1 (551) sleeved on the outer periphery of the transmission shaft 1 (51), one side of the gear 1 (551) is meshedly connected with a gear 2 (552), and the gear 2 (552) is sleeved on the outer periphery of the transmission shaft 2 (52).

6. The boring and milling head according to claim 4, Features: The transmission assembly 2 (56) includes a gear 3 (561) sleeved on the outer periphery of the transmission shaft 2 (52), one side of the gear 3 (561) is meshingly connected with a gear 4 (562), and the gear 4 (562) is sleeved on the outer periphery of the transmission shaft 3 (53).

7. The boring and milling head according to claim 4, Features: The transmission assembly three (57) comprises a gear five (571) mounted on the outer periphery of the transmission shaft three (53); one side of the gear five (571) is meshingly connected with a gear six (572); and the gear six (572) is mounted on the outer periphery of the hollow main shaft (2).

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