Internal turning tool device with manual angle adjustment and machine tool
By using a manual tilt angle adjustment structure and leveraging the threaded transmission of a worm gear and worm wheel, combined with an angle sensor, low-cost, high-precision tilt angle adjustment of the internal milling head is achieved, solving the problem of high cost of electric adjustment in existing technologies.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO JINGYI FEIDA AXIS CO LTD
- Filing Date
- 2025-06-16
- Publication Date
- 2026-06-19
AI Technical Summary
The existing electric adjustment structure of internal milling cutter devices is costly and requires high precision, making it difficult to ensure adjustment accuracy while reducing manufacturing costs.
The manual tilt angle adjustment structure is adopted. The worm gear drives the worm wheel to rotate, which in turn drives the internal milling head to rotate. The tilt angle of the internal milling head is adjusted by combining the thread transmission of the worm gear and the worm wheel. The adjustment angle is visualized by the second rotating shaft and the angle sensor.
This invention achieves low-cost internal milling head tilt angle adjustment, with a simple transmission structure, improved controllability and stability of adjustment, reduced manufacturing costs, and guaranteed adjustment accuracy.
Smart Images
Figure CN224372970U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of internal milling machine tools, and in particular to an internal milling cutter device and machine tool with a manual tilt angle adjustment structure. Background Technology
[0002] Internal rotary milling is a type of cyclone milling, generally used for machining workpiece threads. It uses a motor to drive the cutter head to rotate, the workpiece is placed in the machining hole of the cutter head, and the cutting tool is installed on the inner wall of the cutter head. During the rotation of the cutter head, the cutting tool drives the workpiece to perform milling.
[0003] Since different workpieces require different thread helix angles, internal rotary milling cutter devices are generally equipped with a swing angle adjustment structure. For example, the invention patent with publication number CN110039132A discloses "a rotary milling processing device", which includes a support base and an internal rotary milling head. Rotary shafts are provided on both sides of the internal rotary milling head, and the rotating shafts are rotatably connected to the support base. One of the rotating shafts is connected to a swing angle motor. The swing angle motor drives the rotating shaft to rotate, thereby causing the entire internal rotary milling head to swing relative to the support base, thus achieving adjustment.
[0004] The advantage of electric angle adjustment is its ease of operation, but at the same time, it also increases the manufacturing cost. In addition to the requirements for the rotational accuracy of the motor, the accuracy of the control algorithm is also required to be high. Utility Model Content
[0005] In order to reduce manufacturing costs, the purpose of this application is to provide an internal rotary milling cutter device with a manual tilt angle adjustment structure.
[0006] The internal milling cutter device with manual tilt angle adjustment structure provided in this application adopts the following technical solution:
[0007] An internal milling cutter device with a manual tilt angle adjustment structure includes:
[0008] The support base has a first mounting hole;
[0009] An internal rotary milling head, the internal rotary milling head having a first outwardly extending rotating shaft, the first rotating shaft being rotatably connected within a first mounting hole; and
[0010] An adjustment assembly is used to drive a first rotating shaft to rotate within a first mounting hole. The adjustment assembly includes a worm gear rotatably connected to a support base and a worm wheel meshing with the worm gear, the worm wheel being connected to the first rotating shaft.
[0011] By adopting the above technical solution, the rotating worm gear drives the meshing worm wheel to rotate. The rotation of the worm wheel is synchronized with the rotation of the first rotating shaft, and the rotation of the first rotating shaft drives the entire internal milling head to rotate relative to the support seat, thereby realizing manual adjustment of the swing angle. The structure is simple and the manufacturing cost is relatively low. At the same time, due to the characteristics of threaded transmission, good transmission accuracy can be achieved.
[0012] Preferably, the worm gear includes:
[0013] The threaded section meshes with the worm gear; and
[0014] At least one optical axis segment is connected to the threaded segment.
[0015] The support base has an adjustment groove and a mounting groove that connects to the adjustment groove. A bearing is installed in the mounting groove and is mounted on the optical axis section. The threaded section is received in the adjustment groove.
[0016] By adopting the above technical solution and setting the connection between the bearing and the optical shaft section, the guiding performance of the entire worm gear is improved, especially in terms of axial movement, which can be limited, and the stability is also better when manually rotating.
[0017] Preferably, it further includes a shaft stop assembly, the shaft stop assembly comprising:
[0018] An outer ring retaining ring is mounted on a support base and has an inner hole.
[0019] The inner ring retaining ring is installed on the optical axis section and is partially placed in the inner hole;
[0020] Oil seal, installed between the outer and inner retaining rings; and
[0021] Locking nut, threaded connection to worm gear;
[0022] The outer ring retaining ring abuts against the outer ring end face of the bearing, the inner ring retaining ring abuts against the inner ring end face of the bearing, and the locking nut abuts against the inner ring retaining ring.
[0023] By adopting the above technical solution, the outer and inner ring retainers limit the axial movement of the bearing within the mounting groove, thus better ensuring the stability of the worm gear during rotation. Secondly, the oil seal reduces lubricant leakage from the bearing to the outside and also increases the reliability of the outer and inner ring retainers during installation.
[0024] Preferably, the worm gear further includes a lever at its end.
[0025] By adopting the above technical solution, the wrench can be conveniently connected to manual or power tools.
[0026] Preferably, the first rotating shaft includes a rotating section and a connecting section arranged in a stepped manner. The rotating section is connected to a first mounting hole, and the worm gear is disposed on the connecting section. The worm gear and the rotating section are connected by a plurality of first fasteners.
[0027] By adopting the above technical solution, the rotating section rotates relative to the first mounting hole, and the connecting section facilitates the connection of the worm gear.
[0028] Preferably, the support base also has a rear outlet hole that connects to the first mounting hole, an end cap is provided in the rear outlet hole, and the end of the connecting section extends out from the rear outlet hole and is connected to a dust cover.
[0029] By adopting the above technical solution, the rear outlet hole allows the end of the first rotating shaft to extend out and be installed and positioned by the end cover. The dust cover can reduce dust from entering the first mounting hole from the rear outlet hole, thereby improving service life.
[0030] Preferably, the support base includes a first base body and a second base body distributed on both sides of the internal rotary milling head, and the adjustment component is installed on the first base body; the internal rotary milling head also includes a second rotating shaft coaxially arranged with the first rotating shaft, the second base body has a second mounting hole, and the second rotating shaft is rotatably connected in the second mounting hole.
[0031] By adopting the above technical solution, the connection between the second rotating shaft and the second mounting hole can further improve the stability during rotation.
[0032] Preferably, it further includes an angle detection component, the angle detection component comprising:
[0033] A drive shaft, which is connected to one end of a second rotating shaft;
[0034] Angle sensor; and
[0035] A coupling that connects the drive shaft to the angle sensor.
[0036] By adopting the above technical solution, during the manual adjustment of the swing angle of the internal milling head, the second rotating shaft rotates relative to the second mounting hole. When the second rotating shaft rotates, it synchronously drives the transmission shaft to rotate. The rotation of the transmission shaft is transmitted to the angle sensor through the coupling, thereby realizing the visualization of the rotation angle during manual adjustment and improving the controllability of the adjustment.
[0037] Preferably, it also includes a dustproof cylinder, which is connected to the second base body, and the angle sensor is installed at one end of the dustproof cylinder; wherein, the drive shaft and the coupling are housed inside the dustproof cylinder.
[0038] By adopting the above technical solution, the dustproof cylinder can reduce the interference of external dust entering the dustproof cylinder on the drive shaft and the angle sensor shaft, thereby improving the accuracy of angle detection.
[0039] In order to reduce manufacturing costs, a second objective of this application is to provide a machine tool.
[0040] The machine tool provided in this application adopts the following technical solution:
[0041] A machine tool includes the aforementioned internal milling cutter device with a manual tilt angle adjustment structure.
[0042] By adopting the above technical solution, the rotation of the worm gear driven by the manual drive is used to drive the rotation of the worm wheel, which in turn drives the rotation of the internal milling head. This replaces the existing electric method driven by the motor, improving the controllability of the swing angle adjustment. At the same time, the manual adjustment structure is simple and the manufacturing cost is relatively low.
[0043] In summary, this application includes at least one of the following beneficial technical effects:
[0044] 1. The tilt angle of the internal milling head is adjusted by manually rotating the worm gear to drive the worm wheel. The transmission structure is simple and the manufacturing cost is low.
[0045] 2. By setting a second rotating shaft to connect the first rotating shaft and the support base, the stability of the internal milling head during rotation is improved. At the same time, the second rotating shaft transmits the rotation angle to the angle sensor through the transmission shaft, so that when the swing angle is manually adjusted, the angle adjustment can be visualized, improving the controllability of the angle adjustment. Attached Figure Description
[0046] Figure 1 This is a schematic diagram of the internal rotary milling cutter device in Embodiment 1;
[0047] Figure 2 The first embodiment mainly shows a schematic diagram of the connection between the first rotating shaft and the second rotating shaft;
[0048] Figure 3 The diagram shown in Embodiment 1 illustrates the structure of the adjustment component.
[0049] Explanation of reference numerals in the attached drawings: 1. First base; 11. Adjustment groove; 12. Mounting groove; 13. First fastener; 14. Second fastener; 15. Third fastener; 2. Second base; 3. Internal milling head; 31. Motor; 32. Tool holder; 33. First rotating shaft; 331. Rotating section; 332. Connecting section; 34. Driving pulley; 35. Driven pulley; 36. Second rotating shaft; 4. Adjustment assembly; 41. Worm gear; 411. Threaded section; 412. Smooth shaft section; 413. Lever; 42. Worm gear; 5. Shaft stop assembly; 51. Outer ring retaining ring; 52. Inner ring retaining ring; 53. Oil seal; 54. Locking nut; 7. End cover; 8. Dust cover; 9. Angle detection assembly; 91. Drive shaft; 92. Coupling; 93. Angle sensor; 94. Dust cylinder. Detailed Implementation
[0050] The present application will be further described in detail below with reference to the accompanying drawings.
[0051] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Example 1
[0053] Figure 1 The structure of an internal rotary milling cutter device with a manual tilt angle adjustment mechanism is shown, including a support base and an internal rotary milling head 3 rotatably connected to the support base. The support base is mounted on the slide of the entire milling cutter, and the slide is connected to the machine tool frame. The support base includes a first seat body 1 and a second seat body 2 distributed on the left and right sides of the internal rotary milling head 3.
[0054] Combination Figure 2 and Figure 3The internal milling head 3 includes a motor 31, a driving pulley 34 connected to the motor 31, a driven pulley 35, and a cutter head. The driving pulley 34 is connected to the driven pulley 35 via a belt. The cutter head is connected to one end of the driven pulley 35, so that when the driven pulley 35 rotates, it can synchronously drive the cutter head to rotate. A cutting tool is mounted on the inner ring of the cutter head. The cutter head is rotatably connected to the tool holder 32. The rotating structure of the cutting tool is prior art. This application is only a brief description and is not considered as the inventive point of this application.
[0055] The internal milling head 3 also includes a first rotating shaft 33 and a second rotating shaft 36, which are coaxially arranged with axis L. The first rotating shaft 33 is rotatably connected to the first base 1, and the second rotating shaft 36 is rotatably connected to the second base 2. Specifically, the first base 1 has a first mounting hole, and the second base 2 has a second mounting hole. The first rotating shaft 33 is rotatably connected to the first mounting hole, and the second rotating shaft 36 is rotatably connected to the second mounting hole.
[0056] The internal milling cutter device also includes an adjustment assembly 4 for driving the first rotating shaft 33 to rotate. The adjustment assembly 4 is mounted on the first base 1 and includes a worm gear 41 rotatably connected to the first base 1 and a worm wheel 42 meshing with the worm gear 41. An adjustment groove 11 communicating with the first mounting hole is also provided in the first base 1. One end of the worm gear 41 extends into the adjustment groove 11 and is rotatably connected to the first base 1, and the other end of the worm gear 41 extends out from the adjustment groove 11.
[0057] The worm gear 41 includes an integral threaded section 411, a smooth shaft section 412, and a wrench 413. The threaded section 411 is provided with threads and meshes with the worm wheel 42. The smooth shaft section 412 is equipped with a bearing, which is located in the mounting groove 12 of the connecting adjustment groove 11. The wrench 413 is configured with an outer contour that can match manual or power tools, such as a regular hexagon to match the connection of a hex wrench.
[0058] The internal milling cutter assembly also includes a shaft stop assembly 5, which limits the axial movement of the bearing in the mounting groove 12. The shaft stop assembly 5 includes an outer ring retainer 51, an inner ring retainer 52, an oil seal 53, and a locking nut 54. The outer ring retainer 51 has an inner hole and is fixed to the upper end face of the first base 1, with a portion of the outer ring retainer 51 abutting against the outer ring end face of the bearing. The inner ring retainer 52 is mounted on the optical shaft section 412 and placed within the inner hole of the outer ring retainer 51, abutting against the inner ring end face of the bearing. The locking nut 54 is threaded onto the shaft section between the optical shaft section 412 and the wrench 413, with the end face of the locking nut 54 abutting against one end face of the inner ring retainer 52 relative to the bearing, thereby limiting the axial movement of the inner ring retainer 52 and thus restricting the axial movement of the entire bearing.
[0059] The oil seal 53 is positioned between the outer ring retainer 51 and the inner ring retainer 52 to seal the gap between them, thereby reducing the overflow of lubricant at the bearing position and at the connection position between the bearing and the optical shaft section 412.
[0060] The first rotating shaft 33 is a stepped shaft type, including a rotating section 331 and a connecting section 332 connected to each other. The rotating section 331 is rotatably connected to the first mounting hole. The worm gear 42 is mounted on the connecting section 332 and housed in the first mounting hole. The worm gear 42 is connected to the rotating section 331 by several circumferentially distributed first fasteners 13 to further improve the connection reliability with the first rotating shaft 33. The rotation of the worm gear 42 can synchronously drive the rotation of the first rotating shaft 33.
[0061] The first base 1 also has a rear outlet hole that connects to the first mounting hole. An end cap 7 is provided on the rear outlet hole. The end cap 7 includes a shaft and a stop extending outward from one end of the shaft. The shaft is engaged in the rear outlet hole and surrounds the outer peripheral wall of the connecting section 332. The stop is connected to the first base 1 by several second fasteners 14. The connecting section 332 can rotate relative to the shaft. The connecting section 332 extends out from the rear outlet hole and is connected to a dust cover 8. The two are connected by a third fastener 15, and the dust cover 8 houses and covers the stop.
[0062] The internal milling cutter device also includes an angle detection component 9, which includes a drive shaft 91, a coupling 92, and an angle sensor 93. The drive shaft 91 is connected to the end face of the second rotating shaft 36. The end of the drive shaft 91 away from the second rotating shaft 36 is connected to the angle sensor 93 through the coupling 92. In this embodiment, the angle sensor 93 is a rotating shaft angle sensor, and the rotating shaft of the drive shaft 91 and the angle sensor 93 are connected through the coupling 92.
[0063] A dustproof cylinder 94 is also connected to one end of the second housing 2. Angle sensor 93 is installed at one end of dustproof cylinder 94 and its shaft extends into dustproof cylinder 94. Dustproof cylinder 94 also houses coupling 92 and drive shaft 91. To visualize the angle reading of angle sensor 93, angle sensor 93 can be connected to the CNC system of the machine tool and the angle reading can be displayed on the operation panel. The specific transmission and connection method is existing technology and will not be described.
[0064] When manually adjusting the tilt angle, the worm gear 41 can be driven to rotate by manual or electric tools. The rotation of the worm gear 41 drives the worm wheel 42 to rotate, which in turn drives the first rotating shaft 33 to rotate. The rotation of the first rotating shaft 33 drives the entire internal milling head 3 to rotate, thereby achieving the tilt angle adjustment. Example 2
[0065] A machine tool including an internal milling cutter assembly as shown in Embodiment 1.
[0066] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. An internal turning cutter device having a manual inclination adjustment structure, characterized by, include: The support base has a first mounting hole; An internal milling head (3) has an outwardly extending first rotating shaft (33) which is rotatably connected to a first mounting hole. as well as An adjustment assembly (4) is used to drive the first rotating shaft (33) to rotate within the first mounting hole. The adjustment assembly (4) includes a worm gear (41) rotatably connected to the support base and a worm wheel (42) meshing with the worm gear (41). The worm wheel (42) is connected to the first rotating shaft (33).
2. The internal milling cutter device with manual tilt angle adjustment structure according to claim 1, characterized in that, The worm gear (41) includes: The threaded section (411) meshes with the worm gear (42); and At least one optical axis segment (412) is connected to the threaded segment (411). The support base is provided with an adjustment groove (11) and an installation groove (12) that connects to the adjustment groove (11). A bearing is provided in the installation groove (12), and the bearing is installed on the optical axis section (412). The threaded section (411) is received in the adjustment groove (11).
3. The internal milling cutter device with manual tilt angle adjustment structure according to claim 1, characterized in that, It also includes a shaft stop assembly (5), the shaft stop assembly (5) comprising: An outer ring retaining ring (51) is mounted on a support base and has an inner hole; The inner ring retaining ring (52) is installed on the optical axis section (412) and partially placed in the inner hole; Oil seal (53), installed between outer ring retaining ring (51) and inner ring retaining ring (52); and Locking nut (54) is threaded to worm gear (41); The outer ring retainer (51) abuts against the outer ring end face of the bearing, the inner ring retainer (52) abuts against the inner ring end face of the bearing, and the locking nut (54) abuts against the inner ring retainer (52).
4. The internal rotary milling cutter device with manual tilt angle adjustment structure according to claim 2, characterized in that, The worm gear (41) also includes a lever (413) located at its end.
5. The internal milling cutter device with manual tilt angle adjustment structure according to claim 1, characterized in that, The first rotating shaft (33) includes a rotating section (331) and a connecting section (332) distributed in a stepped manner. The rotating section (331) is connected to the first mounting hole. The worm gear (42) is disposed on the connecting section (332). The worm gear (42) and the rotating section (331) are connected by a number of first fasteners (13).
6. The internal milling cutter device with manual tilt angle adjustment structure according to claim 5, characterized in that, The support base is also provided with a rear outlet hole that connects to the first mounting hole. An end cap (7) is provided in the rear outlet hole. The end of the connecting section (332) extends out from the rear outlet hole and is connected to a dust cover (8).
7. The internal milling cutter device with manual tilt angle adjustment structure according to claim 1, characterized in that, The support base includes a first base (1) and a second base (2) distributed on both sides of the internal rotary milling head (3). The adjustment component (4) is installed on the first base (1). The internal rotary milling head (3) also includes a second rotating shaft (36) coaxially arranged with the first rotating shaft (33). The second base (2) has a second mounting hole, and the second rotating shaft (36) is rotatably connected in the second mounting hole.
8. The internal milling cutter device with manual tilt angle adjustment structure according to claim 7, characterized in that, It also includes an angle detection component (9), which includes: A drive shaft (91) is connected to one end of a second rotating shaft (36); Angle sensor (93); and The coupling (92) connects the drive shaft (91) and the angle sensor (93).
9. The internal rotary milling cutter device with manual tilt angle adjustment structure according to claim 8, characterized in that, It also includes a dustproof cylinder (94), which is connected to the second base (2), and the angle sensor (93) is installed at one end of the dustproof cylinder (94); wherein the drive shaft (91) and the coupling (92) are housed inside the dustproof cylinder (94).
10. A machine tool, characterized in that, Including the internal rotary milling cutter device with a manual tilt angle adjustment structure as described in any one of claims 1-9.