A right angle milling head for a gantry boring and milling machine

Abstract

The application discloses a right-angle milling head for a gantry boring and milling machine and relates to the technical field of right-angle milling heads.The right-angle milling head comprises a body, an input tool holder rotatably connected to the body, the input tool holder being provided with an input helical gear rotating in the body, an output tool holder rotatably connected to the body, the output tool holder being provided with an output helical gear rotating in the body and sliding in the axial direction, the input tool holder being provided with a plurality of input tool holders and being uniformly and circumferentially spaced, a control assembly arranged on the output tool holder, the control assembly controlling the output helical gear to be close to or away from the input helical gear, a connecting assembly arranged on the output tool holder, the connecting assembly connecting and fixing the output helical gear and the input helical gear when the output helical gear is in mesh with the input helical gear, and an unlocking assembly arranged on the output tool holder, the unlocking assembly controlling the output helical gear to be in a sliding state.The application can conveniently process different vertical surfaces of a workpiece.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of right-angle milling heads, and particularly relates to a right-angle milling head for a gantry boring and milling machine. BACKGROUND

[0002] The gantry boring and milling machine is a heavy-duty machining equipment integrating mechanical, electrical and hydraulic technologies, and a landmark structure thereof is a gantry frame, which is composed of a double column, a movable cross beam, a connecting beam, a transverse slide plate and a milling head ram to form a rigid frame and a 'door' shaped support system.

[0003] At present, the gantry boring and milling machine often uses a right-angle milling head when machining some vertical end faces. The right-angle milling head refers to a transverse milling head, and the milling cutter of the right-angle milling head is arranged transversely, and the milling cutter of the right-angle milling head can machine the vertical end face during use.

[0004] When the three-axis gantry boring and milling machine machines a workpiece, the workpiece is driven to move longitudinally along the bed body through a worktable, and the right-angle milling head is driven to move up and down and transversely along the beam guide rail through a control arm. However, the existing right-angle milling head has obvious limitations, and the machining surface is relatively single. When other vertical faces of the workpiece need to be machined, the workpiece must be repositioned. This process is not only cumbersome, but also increases the complexity and time cost of machining. Moreover, the machining accuracy is easily affected during the re-clamping process, and it is difficult to meet the efficient and flexible machining demand. SUMMARY

[0005] In order to facilitate machining of different vertical faces of a workpiece, the present application provides a right-angle milling head for a gantry boring and milling machine.

[0006] The present application provides a right-angle milling head for a gantry boring and milling machine, which adopts the following technical scheme:

[0007] A right-angle milling head for a gantry boring and milling machine, comprising a body;

[0008] An input tool holder is rotationally connected to the body, and the input tool holder is provided with an input helical gear that rotates in the body;

[0009] An output tool holder is rotationally connected to the body, and the output tool holder is provided with an output helical gear that rotates in the body and is arranged to slide along the axial direction, and the input tool holder is multiple and is arranged to be uniformly spaced along the circumferential direction;

[0010] A control assembly is arranged on the output tool holder, and the control assembly controls the output helical gear to approach or move away from the input helical gear;

[0011] A connecting assembly is arranged on the output tool holder, and when the output helical gear slides to engage with the input helical gear, the connecting assembly connects and fixes the output helical gear and the input helical gear.

[0012] An unlocking assembly is arranged on the output tool holder, and the unlocking assembly controls the output bevel gear to enter a sliding state.

[0013] By adopting the above technical scheme, the plurality of input tool holders arranged at equal intervals in the circumferential direction can make the output bevel gear mesh with different input bevel gears to realize different machining directions, without the need to reposition the workpiece, and the machining of different vertical surfaces of the workpiece is facilitated; the control assembly can control the output bevel gear to approach or move away from the input bevel gear, and the input bevel gears are switched conveniently; the connecting assembly can connect and fix the output bevel gear and the input bevel gear when the two gears mesh with each other, and the transmission stability is ensured; and the unlocking assembly can control the output bevel gear to enter the sliding state, and the input bevel gears meshed are replaced conveniently.

[0014] Optionally, the control assembly comprises a control tension spring, a control ring and a mounting ring.

[0015] The output tool holder is internally provided with an output shaft, and the output tool holder is provided with a mounting groove surrounding the output shaft.

[0016] The mounting ring is fixed to the outer circumferential side wall of the output shaft, and the control ring is slidably sleeved on the outer circumferential side of the output shaft.

[0017] The control ring is located on the side of the mounting ring close to the input bevel gear, and the output bevel gear is arranged on the outer circumferential side of the control ring.

[0018] The control tension spring is sleeved on the outer circumferential side of the output shaft, and the two ends of the control tension spring are connected to the opposite sides of the control ring and the mounting ring, respectively.

[0019] By adopting the above technical scheme, in the right-angle milling head for the gantry boring and milling machine, the control assembly composed of the control tension spring, the control ring and the mounting ring can make the control ring slide on the outer circumferential side of the output shaft by utilizing the elasticity of the control tension spring, and then drive the output bevel gear arranged on the outer circumferential side of the control ring to approach or move away from the input bevel gear, so as to realize the meshing and separation of the output bevel gear and the input bevel gear, and meet different machining requirements.

[0020] Optionally, the outer circumferential side of the control ring is provided with a pushing block, the pushing block slides on the output tool holder, and the pushing block protrudes out of the output tool holder.

[0021] By adopting the above technical scheme, the pushing block arranged on the outer circumferential side of the control ring and protruding out of the output tool holder can slide on the output tool holder, and the operator can manually control the control ring to slide on the outer circumferential side of the output shaft, and then control the output bevel gear to approach or move away from the input bevel gear, so as to realize the meshing and switching of different input tool holders and output bevel gears, to meet the machining requirements of different vertical surfaces of the workpiece, and reduce the trouble of repositioning the workpiece.

[0022] Optionally, the connecting assembly comprises connecting columns and connecting springs.

[0023] The connecting columns are slidingly connected in the control ring, and the connecting columns are multiple and uniformly spaced in the circumferential direction, and the output tool holder is provided with a limiting member for limiting rotation of the control ring.

[0024] The output shaft is provided with connecting grooves corresponding to the connecting columns on the outer circumferential side.

[0025] The connecting springs are provided in the control ring and correspond to the connecting columns, and when the connecting columns and the connecting grooves are aligned with each other, the connecting springs drive the connecting columns to be inserted into the connecting grooves.

[0026] By adopting the above technical scheme, when the output helical gear and the input helical gear are engaged, the output helical gear and the input helical gear are stably connected and fixed by the cooperation of the connecting columns and the connecting springs, the possibility of relative rotation or displacement of the two during operation is reduced, the stability of power transmission is ensured, and the reliability of the right-angle milling head for gantry boring and milling machines is improved.

[0027] Optionally, the limiting member is a limiting block, and the limiting block is arranged on the inner wall of the control ring, and the limiting groove for the limiting block to slide in the axial direction is formed on the outer circumferential wall of the output shaft.

[0028] By adopting the above technical scheme, the cooperation of the limiting block and the limiting groove can limit the rotation of the control ring, ensure the accurate engagement of the output helical gear and the input helical gear during the axial sliding process, and improve the stability and reliability of power transmission.

[0029] Optionally, the outer circumferential side of the output shaft is provided with a limiting block, and when the control ring slides to abut against the limiting block, the connecting columns and the connecting grooves are aligned.

[0030] By adopting the above technical scheme, when the control ring slides to abut against the limiting block, the connecting columns and the connecting grooves can be aligned, so that the connecting springs can smoothly drive the connecting columns to be inserted into the connecting grooves, the connecting process of the output helical gear and the input helical gear is completed conveniently and reliably, and the normal work and transmission of the right-angle milling head for gantry boring and milling machines are facilitated.

[0031] Optionally, the connecting column is provided with an arc-shaped convex structure away from the connecting spring.

[0032] By adopting the above technical scheme, the arc-shaped convex structure can make the connecting column more smoothly inserted or separated when cooperating with the connecting groove, reduce the jamming, and improve the smoothness and stability of the operation of the right-angle milling head.

[0033] Optionally, the unlocking assembly comprises an unlocking ring, an unlocking block, a pushing column and an unlocking column;

[0034] The unlocking ring is slidably sleeved on the outer circumferential side of the output shank, the unlocking column is arranged on the inner circumferential side wall of the unlocking ring and slides on the output shank, the unlocking column is in one-to-one correspondence with the connecting column, and the unlocking block is arranged on the side of the unlocking column close to the connecting column;

[0035] The pushing column is arranged on the side of the connecting column away from the connecting groove, and the pushing column slides on the control ring;

[0036] The pushing column is provided with an unlocking groove for inserting the unlocking block, and the pushing column is inclined to form a pushing surface in the unlocking groove, and the unlocking block slides on the pushing surface when inserted into the unlocking groove, thereby driving the connecting column to fall off the connecting groove.

[0037] By adopting the above technical scheme, the unlocking state of the output helical gear and the input helical gear can be conveniently controlled, the output helical gear can smoothly enter the sliding state, the meshing of the output helical gear and different input helical gears can be conveniently adjusted, and thus the machining direction of the milling head can be flexibly changed.

[0038] In summary, the present application has at least one of the following beneficial effects:

[0039] 1. The plurality of input shanks uniformly and circumferentially arranged can enable the output helical gear to select different input helical gears for meshing, realize different machining directions, and do not need to reposition the workpiece, thereby facilitating machining of different vertical surfaces of the workpiece;

[0040] 2. The arc-shaped convex surface structure can enable the connecting column to be more smoothly inserted or separated from the connecting groove when cooperating with the connecting groove, reduce jamming, and improve the smoothness and stability of the operation of the right-angle milling head. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 is a schematic diagram of the external structure of an embodiment of the present application;

[0042] Figure 2 is a schematic diagram of the internal cross section of an embodiment of the present application;

[0043] Figure 3 is Figure 2 is an enlarged schematic diagram of part A of

[0044] Fig. 1: 1, body; 2, input tool holder; 21, input bevel gear; 3, output tool holder; 31, output bevel gear; 32, output shaft; 321, connecting groove; 322, limiting groove; 323, limiting block; 33, mounting groove; 4, control assembly; 41, control tension spring; 42, control ring; 421, shifting block; 43, mounting ring; 5, connecting assembly; 51, connecting column; 52, connecting spring; 6, unlocking assembly; 61, unlocking ring; 62, unlocking block; 63, shifting column; 631, unlocking groove; 632, shifting surface; 64, unlocking column; 7, limiting block. DETAILED DESCRIPTION

[0045] The following description will be made in conjunction with the accompanying drawings Figures 1-3 The application is further described in detail.

[0046] The embodiment of the application discloses a right-angle milling head for a gantry boring and milling machine.

[0047] Referring to Figure 1 With Figure 2 , the right-angle milling head for the gantry boring and milling machine provided by the embodiment of the application comprises a body 1, an input tool holder 2 and an output tool holder 3. The input tool holder 2 is rotationally connected to the body 1, and the input tool holder 2 comprises an input bevel gear 21, which is rotated in the body 1. The input bevel gear 21 is usually made of high-strength alloy steel, and has good wear resistance and fatigue resistance. The structure is a bevel gear shape, which can ensure more stable transmission, reduce noise and vibration. The input bevel gear 21 and the input tool holder 2 are integrally formed, and are rotationally connected to the body 1 through a bearing, of course, other rotational connection modes such as shaft sleeve connection can also be adopted.

[0048] Referring to Figure 2 With Figure 3 , the output tool holder 3 is also rotationally connected to the body 1, and the input tool holder 2 is multiple and uniformly spaced in the circumferential direction. The output tool holder 3 comprises an output bevel gear 31 and an output shaft 32, the output bevel gear 31 is slidingly arranged in the output tool holder 3 along the axial direction, the output bevel gear 31 is rotated in the body 1, and the output shaft 32 is fixedly connected in the output tool holder 3. The output bevel gear 31 is also made of alloy steel, and the bevel gear structure thereof is matched with the input bevel gear 21 to ensure good meshing effect.

[0049] The right-angle milling head further comprises a control assembly 4, which is arranged on the output tool holder 3 and is used for controlling the output bevel gear 31 to be close to or away from the input bevel gear 21. Such a layout makes the output bevel gear 31 be able to be meshed with different input bevel gears 21 when the machining surface is switched, so as to change the input direction of the power.

[0050] Specifically, the control assembly 4 comprises a control tension spring 41, a control ring 42 and a mounting ring 43. The output tool holder 3 is provided with a mounting groove 33 extending along the circumference and surrounding the output shaft 32. The mounting ring 43 is fixed to the outer circumferential sidewall of the output shaft 32, and the control ring 42 is slidably sleeved on the outer circumferential sidewall of the output shaft 32 and located on the side of the mounting ring 43 close to the input helical gear 21. The output helical gear 31 is fixedly connected to the outer circumferential sidewall of the control ring 42, and the control tension spring 41 is sleeved on the outer circumferential sidewall of the output shaft 32, with one end fixedly connected to the side of the control ring 42 away from the output helical gear 31 and the other end fixedly connected to the side of the mounting ring 43 toward the output helical gear 31. The control tension spring 41 is usually made of high-quality spring steel and has a suitable elastic coefficient to provide a stable pulling force for the control ring 42. The control ring 42 and the mounting ring 43 are usually made of aluminum alloy to reduce the weight. When it is needed to move the output helical gear 31 close to the input helical gear 21, the control ring 42 is moved against the pulling force of the control tension spring 41, and the output helical gear 31 is moved accordingly; when the control ring 42 is released, the pulling force of the control tension spring 41 causes the control ring 42 and the output helical gear 31 to return to the original position.

[0051] The outer circumferential sidewall of the control ring 42 is fixedly connected with a push block 421, which is slidably arranged in the output tool holder 3 and protrudes outward. The push block 421 is usually made of plastic or rubber for easy manual operation by the operator. The push block 421 is in the shape of a square block and is fixed to the outer circumferential sidewall of the control ring 42 by bolts or integral molding, or other fixing methods such as welding. During use, the movement of the control ring 42 and the position of the output helical gear 31 can be controlled by pushing the push block 421.

[0052] The right-angle milling head further comprises a connecting assembly 5 arranged on the output tool holder 3, which connects and fixes the output helical gear 31 and the input helical gear 21 when they are engaged. The unlocking assembly 6 is arranged on the output tool holder 3, which is used to control the output helical gear 31 to enter a sliding state, so that the output helical gear 31 and the input helical gear 21 can be separated from each other, achieving flexible switching of the machining surface and avoiding the need to reposition the workpiece. The reason is that the plurality of input tool holders 2 are uniformly and circumferentially spaced, and the direction of power input can be changed by engaging the output helical gear 31 with different input helical gears 21, thereby realizing machining of different machining surfaces. During machining, one output tool holder 3 can be engaged with an input tool holder 2 through the output helical gear 31 and the input helical gear 21 for machining a vertical sidewall of the workpiece; or multiple output tool holders 3 can be simultaneously engaged with an input tool holder 2 through the output helical gear 31 and the input helical gear 21 for machining multiple vertical sidewalls of the workpiece in sequence, for example, when multiple slot walls of a workpiece need to be machined to form a hole slot, the corresponding multiple output tool holders 3 can be brought into a working state.

[0053] Specifically, the connecting assembly 5 comprises connecting columns 51 and connecting springs 52. The connecting columns 51 are slidingly connected in the control ring 42, and the length direction of the connecting columns 51 is perpendicular to the central axis of the output shaft 32. The connecting columns 51 are multiple and uniformly spaced in the circumferential direction, and the output shaft 32 is provided with connecting grooves 321 on the outer circumferential side, and the connecting columns 51 correspond to the connecting grooves 321 one by one. The side of the connecting column 51 away from the connecting spring 52 is provided with an arc convex surface structure. This arc convex surface structure can play a guiding role when the connecting column 51 is inserted into the connecting groove 321, making the insertion process more smooth. The arc convex surface structure can be formed on the end of the connecting column 51 by mechanical processing.

[0054] The connecting spring 52 is installed in the control ring 42, and the connecting spring 52 corresponds to the connecting column 51 one by one, one end of the connecting spring 52 abuts against one end of the connecting column 51 away from the connecting groove 321, and the other end abuts against the control ring 42. The connecting column 51 is usually made of stainless steel, which has good corrosion resistance and strength. The connecting column 51 is in the shape of a cylinder and is slidingly connected with the control ring 42 through a guide groove. The connecting spring 52 is made of ordinary carbon spring steel, and when the connecting column 51 and the connecting groove 321 are aligned with each other, the elastic force of the connecting spring 52 drives the connecting column 51 to be inserted into the connecting groove 321, realizing the fixed connection of the control ring 42 and the output shaft 32, so that the output helical gear 31 and the input helical gear 21 remain in the state of mutual engagement.

[0055] The output tool shank 3 is provided with a limiting piece for limiting the rotation of the control ring 42 and reducing the possibility of circumferential misalignment between the connecting column 51 and the connecting groove 321. Specifically, the limiting piece is a limiting block 7, which is fixedly connected to the inner wall of the control ring 42. A limiting groove 322 is formed on the outer circumferential side wall of the output shaft 32, and the limiting teeth extend along the axial direction of the output shaft 32, and the limiting block 7 slides in the limiting teeth along the axial direction. The limiting block 7 is usually made of copper alloy, which has good wear resistance and self-lubricating performance. The shape of the limiting groove 322 matches that of the limiting block 7, and the cooperation of the two can ensure that the control ring 42 can only slide in the axial direction and cannot rotate, thereby ensuring that the connecting column 51 can be accurately aligned with the connecting groove 321.

[0056] At the same time, the outer circumferential side of the output shaft 32 is fixedly connected with a limiting block 323, and the limiting block 323 is located on the side of the control ring 42 away from the mounting ring 43. When the control ring 42 slides to abut against the limiting block 323, the connecting column 51 is aligned with the connecting groove 321, which facilitates the alignment of the connecting column 51 with the connecting groove 321.

[0057] The right-angle milling head further comprises an unlocking assembly 6, which comprises an unlocking ring 61, an unlocking block 62, a poking column 63 and an unlocking column 64. The unlocking ring 61 is slidingly sleeved on the outer circumferential side of the output tool holder 3. The unlocking column 64 is fixedly connected to the inner circumferential side wall of the unlocking ring 61 and axially slides on the output tool holder 3 along the output shaft 32. The unlocking column 64 is in one-to-one correspondence with the connecting column 51.

[0058] The unlocking block 62 is fixedly connected to the side of the unlocking column 64 close to the connecting column 51. The poking column 63 is fixedly connected to the side of the connecting column 51 away from the connecting groove 321 and slides on the control ring 42. The poking column 63 is coaxially arranged with the connecting column 51. The poking column 63 is provided with an unlocking groove 631 for inserting the unlocking block 62. The poking column 63 is obliquely formed with a poking surface 632, which is located in the unlocking groove 631. The unlocking ring 61 is generally made of engineering plastic and has a light weight and good wear resistance. The unlocking column 64 and the unlocking block 62 are made of stainless steel to ensure sufficient strength. The poking column 63 is made of aluminum alloy and is integrally formed with the connecting column 51. When it is needed to make the output helical gear 31 enter the sliding state, the unlocking ring 61 is slid, the unlocking block 62 is inserted into the unlocking groove 631, the unlocking block 62 slides on the poking surface 632 at this time, the poking column 63 is driven to slide away from the connecting groove 321, so that the connecting column 51 is separated from the connecting groove 321, and the output helical gear 31 can slide away from the input helical gear 21 along the axial direction.

[0059] The implementation principle of the right-angle milling head for the gantry boring and milling machine according to the embodiment of the application is as follows:

[0060] The right-angle milling head for the gantry boring and milling machine can flexibly change the power input direction by the uniform and interval arrangement of the plurality of input tool holders 2 in the circumferential direction and the selective meshing of the output helical gear 31 and the input helical gear 21, so as to realize the machining of different machining surfaces, reduce the trouble of re-placing the workpiece and improve the machining efficiency and precision. The cooperative work of the control assembly 4, the connecting assembly 5 and the unlocking assembly 6 ensures the accurate meshing and separation of the output helical gear 31 and the input helical gear 21, so that the operation of the whole device is more convenient and reliable.

[0061] The above are the preferred embodiments of the application, which do not limit the protection scope of the application. Any equivalent changes made according to the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. A right angle milling head for a gantry boring and milling machine, characterised in that: The utility model relates to a kind of input and output gear transmission mechanism, including body (1); Input tool holder (2) is rotatably connected to the body (1), and the input tool holder (2) is provided with input helical gear (21) that rotates in the body (1); Output tool holder (3) is rotatably connected to the body (1), and the output tool holder (3) is provided with output helical gear (31) that rotates in the body (1) along the axial direction slidingly, and the input tool holder (2) has multiple and is arranged uniformly along the circumferential direction; Control assembly (4) is arranged on the output tool holder (3), and the control assembly (4) controls the output helical gear (31) to be close to or away from input helical gear (21); Connecting assembly (5) is arranged on the output tool holder (3), and when the output helical gear (31) is slid to engage with the input helical gear (21), the connecting assembly (5) connects and fixes the output helical gear (31) and the input helical gear (21); Unlocking assembly (6) is arranged on the output tool holder (3), and the unlocking assembly (6) controls the output helical gear (31) to enter the sliding state; The control assembly (4) includes control tension spring (41), control ring (42) and mounting ring (43); The output tool holder (3) is provided with output shaft (32) in it, and the output tool holder (3) is provided with mounting groove (33) around the output shaft (32); The mounting ring (43) is fixed on the outer circumferential side wall of the output shaft (32), and the control ring (42) is slidably sleeved on the outer circumferential side of the output shaft (32); The control ring (42) is located on the side of the mounting ring (43) close to the input helical gear (21), and the output helical gear (31) is arranged on the outer circumferential side of the control ring (42); The control tension spring (41) is sleeved on the outer circumferential side of the output shaft (32), and the two ends of the control tension spring (41) are respectively connected to the opposite sides of the control ring (42) and the mounting ring (43); The connecting assembly (5) includes connecting column (51) and connecting spring (52); The connecting column (51) is slidably connected in the control ring (42), and the connecting column (51) has multiple and is arranged uniformly along the circumferential direction, and the output tool holder (3) is provided with a limiting member for limiting the rotation of the control ring (42); The outer circumferential side of the output shaft (32) is provided with connecting groove (321) for inserting the connecting column (51) and one-to-one correspondence; The connecting spring (52) is arranged in the control ring (42) and corresponds to the connecting column (51) one-to-one, and when the connecting column (51) and the connecting groove (321) are aligned with each other, the connecting spring (52) drives the connecting column (51) to insert into the connecting groove (321); The unlocking assembly (6) includes unlocking ring (61), unlocking block (62), knob column (63) and unlocking column (64) The unlocking ring (61) is sleeved on the outer circumferential side of the output shank (3), the unlocking post (64) is arranged on the inner circumferential side wall of the unlocking ring (61) and slides on the output shank (3), the unlocking post (64) is in one-to-one correspondence with the connecting post (51), and the unlocking block (62) is arranged on the side of the unlocking post (64) close to the connecting post (51); The pushing post (63) is arranged on the side of the connecting post (51) away from the connecting groove (321), and the pushing post (63) slides on the control ring (42); The pushing post (63) is provided with an unlocking groove (631) for inserting the unlocking block (62), the pushing post (63) is inclined to form a pushing surface (632) in the unlocking groove (631), and the unlocking block (62) slides on the pushing surface (632) when being inserted into the unlocking groove (631), thereby driving the connecting post (51) to fall off the connecting groove (321).

2. The right angle milling head for a gantry boring and milling machine according to claim 1, characterized in that: The outer circumferential side of the control ring (42) is provided with a pushing block (421), the pushing block (421) slides on the output shank (3), and the pushing block (421) protrudes out of the output shank (3).

3. The right angle milling head for a gantry boring and milling machine according to claim 1, characterized in that: The limiting member is a limiting block (7), the limiting block (7) is arranged on the inner wall of the control ring (42), and the outer circumferential wall of the output shaft (32) is provided with a limiting groove (322) for sliding the limiting block (7) in the axial direction.

4. The right angle milling head for a gantry boring and milling machine according to claim 3, characterized in that: The outer circumferential side of the output shaft (32) is provided with a limiting block (323), when the control ring (42) slides to abut against the limiting block (323), the connecting post (51) is aligned with the connecting groove (321).

5. The right angle milling head for a gantry boring and milling machine according to claim 4, characterized in that: The side of the connecting post (51) away from the connecting spring (52) is provided with an arc-shaped convex surface structure.

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