Flat side milling angle head

Abstract

This utility model relates to the field of machine tool equipment technology, and provides a flat side milling angle head, including a connecting plate connected to a machine tool, a main housing located below the connecting plate, a transmission assembly located inside the main housing, and a tool holder assembly connected to the output end of the transmission assembly. The main housing has a formed receiving cavity. The transmission assembly includes a coupling connected to the machine tool spindle, a bevel gear set connected to the coupling, and a cylindrical gear set meshing with the power output end of the bevel gear set. The tool holder assembly is connected to the output end of the cylindrical gear set. A locking assembly is provided between the main housing and the connecting plate. The connecting plate has a sliding groove. When the locking assembly is in the released state, it drives the main housing, causing the locking assembly to slide along the sliding groove, and the main housing rotates relative to the connecting plate. This utility model has a compact structure, reducing the overall size of the flat side milling angle head. The flat design of the main housing allows it to penetrate narrow gaps, avoiding interference between the tool and the fixture or workpiece.

Description

Technical Field

[0001] This utility model relates to the field of machine tool equipment technology, and in particular to a flat side milling angle head. Background Technology

[0002] In machining, the one-time machining and positioning of the workpiece can ensure the machining accuracy of its main structure. In particular, there is a great demand for side milling of the workpiece. In the existing technology, a side milling head is used for side milling. The side milling head can be installed in the tool magazine and can be freely switched between the tool magazine and the machine tool spindle. Multi-angle milling of the workpiece can be achieved without changing the machine tool structure.

[0003] Existing side milling heads have complex structures and limited milling angles. Especially in the side machining of narrow and deep cavities, the transmission structure of the side milling head results in a large space occupied by the tool holder head, which limits the machining range of the workpiece. For machining larger workpieces, larger machine tools are required, which increases the equipment cost of the machining plant. Utility Model Content

[0004] In view of this, the present invention aims to propose a flat side milling angle head with a compact structure, which solves the problem of cutting deeper cavities and adapts to narrow cutting spaces.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A flat side milling angle head includes a connecting plate connected to a machine tool, a main housing disposed below the connecting plate, a transmission assembly disposed in the main housing, and a tool holder assembly connected to the output end of the transmission assembly.

[0007] The main housing has a cavity formed inside, and the transmission assembly includes a coupling connected to the machine tool spindle, a bevel gear set connected to the coupling, and a cylindrical gear set meshing with the power output end of the bevel gear set.

[0008] The tool holder assembly is connected to the output end of the cylindrical gear set;

[0009] A locking assembly is provided between the main housing and the connecting plate. The connecting plate has a sliding groove. When the locking assembly is in the loosened state, it drives the main housing to slide along the sliding groove, and the main housing rotates relative to the connecting plate.

[0010] Furthermore, the bevel gear set includes a first bevel gear fixed to the coupling and a second bevel gear pivotally connected to the main housing;

[0011] The first bevel gear is arranged along the length direction of the main housing, and the second bevel gear is arranged perpendicular to the first bevel gear. The first bevel gear and the second bevel gear mesh and drive each other.

[0012] Furthermore, a drive shaft is also connected to the coupling, and the first bevel gear is sleeved on the outside of the drive shaft;

[0013] A bearing sleeve is fitted onto the outer side of the first bevel gear, and the bearing sleeve is fixedly connected to the main housing.

[0014] The first bevel gear includes a first extension section and a first tooth profile section, and a first bearing assembly is provided between the first extension section and the bearing sleeve.

[0015] Furthermore, the first bearing assembly includes a single-row angular contact ball bearing and a first double angular contact ball bearing.

[0016] Furthermore, a first round shaft is connected to the main housing, and a second bevel gear is sleeved on the outside of the first round shaft. The second bevel gear includes a second extension section and a second toothed section. A first gear is sleeved on the outside of the second extension section, and a locking nut abuts against the bottom of the first gear.

[0017] A second bearing assembly is provided between the second extension section and the first circular shaft.

[0018] Furthermore, the second bearing assembly includes two sets of second double angular contact ball bearings.

[0019] Furthermore, the cylindrical gear set includes a first gear, a second gear meshing with the first gear, a third gear meshing with the second gear, and a fourth gear meshing with the third gear, the fourth gear being sleeved on the tool holder assembly;

[0020] The second gear and the third gear are both pivotally connected to the main housing.

[0021] Furthermore, the tool holder assembly includes a tapered sleeve disposed in the inner hole of the fourth gear, a tool holder sliding within the tapered sleeve, and a pull stud connecting the tapered sleeve and the tool holder. The main housing is formed with a receiving hole for accommodating the tool holder assembly, and a third double angular contact ball bearing is provided between the tapered sleeve and the receiving hole.

[0022] Furthermore, along the thickness direction of the main housing, an upper pressure cap and a lower pressure cap are provided at both ends of the receiving hole;

[0023] The lower pressure cap and the pull stud are connected by bolts;

[0024] The upper pressure cover has a circular hole, and a sealing ring is provided between the circular hole and the conical sleeve. The inner hole of the sealing ring is also provided with a wear-resistant sleeve, which is fitted onto the conical sleeve.

[0025] A baffle is also connected to the upper pressure cover, which is used to block the circular hole.

[0026] Furthermore, the locking assembly includes a sliding screw and a locking nut;

[0027] The sliding screw includes a sliding block, a connecting rod, and a threaded rod, and the sliding block is disposed in the sliding groove;

[0028] The groove is circular.

[0029] Compared with the prior art, this utility model has the following advantages:

[0030] The flat side milling head of this utility model is connected to the machine tool via a connecting plate. The main housing houses the transmission assembly and the tool holder assembly. The milling cutter is connected to the tool holder assembly and connected to the machine tool spindle via a coupling. A bevel gear set is used to change the transmission direction of the spindle to be the same as that of the tool holder, and the power of the bevel gear set is transmitted to the tool holder assembly through the meshing transmission of the cylindrical gear set to drive the rotation of the tool. By setting a locking assembly, the main housing can be manually rotated relative to the connecting plate when it is in the loose state, so as to adjust the rotation angle of the tool relative to the machine tool spindle. This structure is compact, reducing the overall size of the flat side milling head. The flat design of the main housing can penetrate into narrow gaps, avoiding interference between the tool and the fixture or workpiece.

[0031] Furthermore, this flat side milling head employs a double bevel gear drive and angular contact bearing assembly, which reduces vibration amplitude. For deep cavity machining, it uses a plunge milling method to convert radial force into axial force, enhancing tool stability. The gear drive, consisting of bevel gear sets and cylindrical gear sets, increases the accuracy of power transmission. Attached Figure Description

[0032] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0033] Figure 1 This is a three-dimensional structural diagram of the flat side milling angle head described in an embodiment of the present utility model;

[0034] Figure 2 This is a top view of the flat side milling angle head described in an embodiment of the present invention;

[0035] Figure 3This is a front view schematic diagram of the flat side milling angle head described in an embodiment of this utility model;

[0036] Figure 4 This is a left view schematic diagram of the flat side milling angle head described in an embodiment of this utility model;

[0037] Figure 5 for Figure 2 Schematic diagram of cross-section at point AA.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Connecting plate; 2. Main housing; 3. Transmission assembly; 4. Tool holder assembly; 5. Locking assembly; 6. First round shaft; 7. Locking nut; 8. First double angular contact ball bearing; 9. Single row angular contact ball bearing; 10. Second double angular contact ball bearing; 11. Upper pressure cover; 12. Lower pressure cover; 13. Sealing ring; 14. Wear-resistant sleeve; 15. Cover; 16. Dial;

[0040] 101. Slide groove;

[0041] 301. Coupling; 302. First bevel gear; 303. Second bevel gear; 304. Drive shaft; 305. Bearing sleeve; 306. First gear; 307. Second gear; 308. Third gear; 309. Fourth gear;

[0042] 401. Tapered sleeve; 402. Tool holder; 403. Pull stud; 404. Third double angular contact ball bearing;

[0043] 501. Sliding screw; 502. Locking nut;

[0044] 3021, First extension segment; 3022, First toothed segment;

[0045] 3031, Second extension section; 3032, Second toothed section;

[0046] 5011, sliding block; 5012, connecting rod; 5013, threaded rod. Detailed Implementation

[0047] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0048] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "back," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0050] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0051] This embodiment relates to a flat side milling angle head. Generally, the flat side milling angle head includes a connecting plate 1 connected to a machine tool, a main housing 2 located below the connecting plate 1, a transmission assembly 3 located within the main housing 2, and a tool holder assembly 4 connected to the output end of the transmission assembly 3. The main housing 2 has a accommodating cavity. The transmission assembly 3 includes a coupling 301 connected to the machine tool spindle, a bevel gear set connected to the coupling 301, and a cylindrical gear set meshing with the power output end of the bevel gear set.

[0052] The tool holder assembly 4 is connected to the output end of the cylindrical gear set. A locking assembly 5 is provided between the main housing 2 and the connecting plate 1. The connecting plate 1 is provided with a sliding groove 101. When the locking assembly 5 is in the loose state, it drives the main housing 2 to slide along the sliding groove 101, and the main housing 2 rotates relative to the connecting plate 1.

[0053] As described above, the flat side milling head of this embodiment is connected to the machine tool via a connecting plate 1. The main housing 2 is used to house the transmission assembly 3 and the tool holder assembly 4. The milling cutter is connected to the tool holder assembly 4. A coupling 301 is provided to connect to the machine tool spindle. A bevel gear set is used to change the transmission direction of the spindle to be the same as the transmission direction of the tool holder. Through the meshing transmission of the cylindrical gear set, the power of the bevel gear set is transmitted to the tool holder assembly 4 to drive the rotation of the tool. By providing a locking assembly 5, when the locking assembly is in the loosened state, the rotation of the main housing 2 relative to the connecting plate 1 can be manually adjusted to adjust the rotation angle of the tool relative to the machine tool spindle. This structure is compact, reducing the overall size of the flat side milling head. The flat design of the main housing 2 can penetrate into narrow gaps, avoiding interference between the tool and the fixture or workpiece.

[0054] Based on the above overall description, an exemplary structure of a flat side milling angle head in this embodiment is as follows: Figures 1 to 3 As shown, the main housing 2 in this embodiment is designed with a flat structure, which is conducive to deep groove side milling of larger parts. The transmission assembly 3 and the tool holder assembly 4 are integrated into the main housing 2, which not only reduces the space occupied, but also makes the structure more compact and easy to install and disassemble.

[0055] like Figures 1 to 4 As shown, the main housing 2 is located on the eccentric side of the connecting plate 1, which can avoid part of the workpiece and prevent interference during processing. It also eliminates the need to increase the length of the tool holder assembly 4, ensuring milling strength and improving milling effect.

[0056] As a preferred embodiment, such as Figure 4 As shown, the bevel gear set includes a first bevel gear 302 fixed to the coupling 301 and a second bevel gear 303 pivotally connected to the main housing 2. The first bevel gear 302 is arranged along the length of the main housing 2, and the second bevel gear 303 is arranged perpendicular to the first bevel gear 302. The first bevel gear 302 and the second bevel gear 303 mesh and drive each other. This flat side milling angle head adopts double bevel gear transmission and angular contact bearing assembly, which can reduce the vibration amplitude. For deep cavity machining, the radial force is converted into axial force by plunge milling, which enhances tool stability. The gear transmission of the bevel gear set and the cylindrical gear set increases the accuracy of power transmission.

[0057] Preferably, such as Figure 5As shown, a drive shaft 304 is also connected to the coupling 301. A first bevel gear 302 is sleeved on the outside of the drive shaft 304, and a bearing sleeve 305 is sleeved on the outside of the first bevel gear 302. The bearing sleeve 305 is fixedly connected to the main housing 2. The first bevel gear 302 includes a first extension section 3021 and a first tooth section 3022. A first bearing assembly is provided between the first extension section 3021 and the bearing sleeve 305. By setting the drive shaft 304 to support the first bevel gear 302, the structural strength of the first bevel gear 302 is increased. By setting the first extension section 3021 and the bearing sleeve 305, the axial length of the first bevel gear 302 is increased. And by setting the first bearing assembly between the bearing housing and the first extension section 3021, the stable transmission of the machine tool spindle output driving force is increased, and vibration is avoided.

[0058] Furthermore, such as Figure 5 As shown, the first bearing assembly includes a single-row angular contact ball bearing 9 and a first double angular contact ball bearing 8. Using paired double angular contact ball bearings significantly increases the radial and axial load capacity of the bearings, improving the load-bearing capacity and rotational accuracy of the first bevel gear 302. By adding a single-row angular contact ball bearing 9, the first bevel gear 302 is further able to withstand the axial force of the second bevel gear 303, providing stable and reliable support and ensuring the stability of the tool holder assembly 4 during rotation.

[0059] In addition, such as Figure 5 As shown, a first round shaft 6 is connected to the main housing 2, and a second bevel gear 303 is sleeved on the outside of the first round shaft 6. The second bevel gear 303 includes a second extension section 3031 and a second tooth section 3032. A first gear 306 is sleeved on the outside of the second extension section 3031, and a locking nut 7 abuts against the bottom of the first gear 306. A second bearing assembly is provided between the second extension section 3031 and the first round shaft 6.

[0060] Furthermore, still as Figure 5 As shown, the second bearing assembly includes two sets of second double angular contact ball bearings 10. This arrangement ensures the rigidity of the second bevel gear 303 during its movement, guarantees the rotational accuracy and rigidity during transmission, avoids vibration and jitter, and helps ensure the machining accuracy of the workpiece.

[0061] In addition, in order to increase the machining space of parts, such as Figure 5As shown, the cylindrical gear set includes the aforementioned first gear 306, a second gear 307 meshing with the first gear 306, a third gear 308 meshing with the second gear 307, and a fourth gear 309 meshing with the third gear 308. The fourth gear 309 is mounted on the tool holder assembly 4. The second gear 307, third gear 308, and fourth gear 309 are all pivotally connected to the main housing 2. Accordingly, the inner bores of the second gear 307 and the third gear 308 are respectively provided with support shafts, and deep groove ball bearings are fitted onto the support shafts to increase the flexibility of rotation of the second gear 307 and the third gear 308 and reduce friction.

[0062] Furthermore, it should be noted that in this embodiment, the flat side milling head, by setting the main housing 2, houses all the aforementioned gears. As long as the positional accuracy of the holes in the main housing 2 used to install the aforementioned gears is guaranteed, and the installation accuracy is ensured during the installation process, the milling accuracy of the milling cutter can be effectively improved.

[0063] Preferably, such as Figure 5 As shown, the tool holder assembly 4 includes a tapered sleeve 401 disposed in the inner hole of the fourth gear 309, a tool holder 402 sliding in the tapered sleeve 401, and a pull stud 403 connecting the tapered sleeve 401 and the tool holder 402. The main housing 2 is formed with a receiving hole for accommodating the tool holder assembly 4, and a third double angular contact ball bearing 404 is provided between the tapered sleeve 401 and the receiving hole.

[0064] Furthermore, still as Figure 5 As shown, along the thickness direction of the main housing 2, an upper pressure cover 11 and a lower pressure cover 12 are provided at both ends of the receiving hole. The lower pressure cover 12 is connected to the pull stud 403 by bolts. The upper pressure cover 11 has a circular hole, and a sealing ring 13 is provided between the circular hole and the tapered sleeve 401. The inner hole of the sealing ring 13 is also provided with a wear-resistant sleeve 14, which is fitted onto the tapered sleeve 401. A stop cover 15 is also connected to the upper pressure cover 11 to block the circular hole. By providing the upper pressure cover 11 and the lower pressure cover 12, the installation and disassembly of the tool holder assembly 4 are facilitated. By providing the sealing ring 13, the third double angular contact ball bearing 404 inside the tool holder assembly 4 is protected to prevent impurities from entering the bearing.

[0065] As a preferred embodiment, such as Figure 5As shown, the locking assembly 5 includes a sliding screw 501 and a locking nut 502. The sliding screw 501 includes a sliding block 5011, a connecting rod 5012, and a threaded rod 5013. The sliding block 5011 is located within the slide groove 101. The slide groove 101 is annular. During use, according to the position of the groove in the workpiece as indicated in the figure, the locking nut 502 is loosened, and the angle of the main housing 2 is manually rotated to the required angle. The height and horizontal movement are achieved through the worktable, allowing the milling cutter to adjust the milling of deep grooves at different angles. This improves the movement flexibility of the flat side milling head, expands the milling range, and effectively reduces the investment cost of the processing equipment.

[0066] like Figures 1 to 4 As shown, an annular angle dial 16 is also connected to the main housing 2. The dial 16 abuts against the connecting plate 1. During manual adjustment, the angle of the main housing 2 can be accurately adjusted by setting the dial 16, thereby increasing the accuracy of position adjustment.

[0067] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flat side milling angle head, characterized in that: It includes a connecting plate (1) connected to the machine tool, a main housing (2) located below the connecting plate (1), a transmission assembly (3) located inside the main housing (2), and a tool holder assembly (4) connected to the output end of the transmission assembly (3). The main housing (2) has a cavity formed inside. The transmission assembly (3) includes a coupling (301) connected to the spindle of the machine tool, a bevel gear set connected to the coupling (301), and a cylindrical gear set meshing and driving at the power output end of the bevel gear set. The tool holder assembly (4) is connected to the output end of the cylindrical gear set; A locking assembly (5) is provided between the main housing (2) and the connecting plate (1). The connecting plate (1) is provided with a sliding groove (101). When the locking assembly (5) is in the loosened state, it drives the main housing (2). The locking assembly (5) slides along the sliding groove (101), and the main housing (2) rotates relative to the connecting plate (1).

2. The flat side milling angle head according to claim 1, characterized in that: The bevel gear set includes a first bevel gear (302) fixed on the coupling (301) and a second bevel gear (303) pivotally connected to the main housing (2). The first bevel gear (302) is arranged along the length direction of the main housing (2), and the second bevel gear (303) is arranged perpendicular to the first bevel gear (302). The first bevel gear (302) and the second bevel gear (303) mesh and drive each other.

3. The flat side milling angle head according to claim 2, characterized in that: The coupling (301) is also connected to a drive shaft (304), and the first bevel gear (302) is sleeved on the outside of the drive shaft (304); A bearing sleeve (305) is fitted on the outside of the first bevel gear (302), and the bearing sleeve (305) is fixedly connected to the main housing (2); The first bevel gear (302) includes a first extension section (3021) and a first tooth section (3022), and a first bearing assembly is provided between the first extension section (3021) and the bearing sleeve (305).

4. The flat side milling angle head according to claim 3, characterized in that: The first bearing assembly includes a single-row angular contact ball bearing (9) and a first double angular contact ball bearing (8).

5. The flat side milling angle head according to claim 2, characterized in that: The main housing (2) is connected to a first round shaft (6), and a second bevel gear (303) is sleeved on the outside of the first round shaft (6). The second bevel gear (303) includes a second extension section (3031) and a second tooth section (3032). A first gear (306) is sleeved on the outside of the second extension section (3031), and a locking nut (7) abuts against the bottom of the first gear (306). A second bearing assembly is provided between the second extension section (3031) and the first round shaft (6).

6. The flat side milling angle head according to claim 5, characterized in that: The second bearing assembly includes two sets of second double angular contact ball bearings (10).

7. The flat side milling angle head according to claim 1, characterized in that: The cylindrical gear set includes a first gear (306), a second gear (307) meshing with the first gear (306), a third gear (308) meshing with the second gear (307), and a fourth gear (309) meshing with the third gear (308). The fourth gear (309) is sleeved on the tool holder assembly (4). The second gear (307) and the third gear (308) are both pivotally connected to the main housing (2).

8. The flat side milling angle head according to claim 7, characterized in that: The tool holder assembly (4) includes a tapered sleeve (401) disposed in the inner hole of the fourth gear (309), a tool holder (402) sliding in the tapered sleeve (401), and a pull stud (403) connecting the tapered sleeve (401) and the tool holder (402). The main housing (2) is formed with a receiving hole for accommodating the tool holder assembly (4), and a third double angular contact ball bearing (404) is provided between the tapered sleeve (401) and the receiving hole.

9. The flat side milling angle head according to claim 8, characterized in that: Along the thickness direction of the main housing (2), the two ends of the receiving hole are provided with an upper pressure cover (11) and a lower pressure cover (12). The lower pressure cap (12) and the pull stud (403) are connected by bolts; The upper pressure cover (11) has a circular hole, and a sealing ring (13) is provided between the circular hole and the conical sleeve (401). The inner hole of the sealing ring (13) is also provided with a wear-resistant sleeve (14), and the wear-resistant sleeve (14) is sleeved on the conical sleeve (401). A baffle (15) is also connected to the upper pressure cover (11), which is used to block the circular hole.

10. The flat side milling angle head according to claim 9, characterized in that: The locking assembly (5) includes a sliding screw (501) and a locking nut (502); The sliding screw (501) includes a sliding block (5011), a connecting rod (5012), and a threaded rod (5013), wherein the sliding block (5011) is disposed in the sliding groove (101); The groove (101) is annular.

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