CN202462076U - Double-sided right-angle milling head - Google Patents

Abstract

The utility model relates to a machine tool accessory, in particular to a double-sided right-angle milling head, comprising a first bevel gear (31), a middle steering device (34), a main shaft (7), a front support device (33), a rear support Device (35), right-angle milling head casing (1), front end pressing device (30), rear end pressing device (37). The utility model can complete the milling process of two parallel planes or multiple parallel planes under the condition of one-time positioning of the main shaft (7), which reduces the adjustment operation of the right-angle milling head during processing, and has a simple, compact and reasonable structure, which can obviously improve Productivity.

Description

Double sided right angle milling head

technical field

The utility model relates to a machine tool accessory, in particular to a right-angle milling head which can be used for double-sided processing.

Background technique

With the rapid development of my country's machinery industry, especially the development of heavy industry, there is an increasing demand for high-precision metal processing equipment such as pentahedron gantry machining centers in the market. Pentahedron gantry machining centers are based on gantry machining centers. A developed multifunctional CNC machine tool can realize multi-faceted machining of large mechanical parts by replacing various additional cutting heads. Usually, all or most of the processing procedures of large mechanical parts can be completed in one clamping, thus greatly improving It can greatly improve the production efficiency, which can improve the work efficiency by more than 3 times compared with the general gantry machining center. At the same time, because multiple clamping is avoided, errors caused by multiple clamping are eliminated, which is beneficial to improving and ensuring machining accuracy. As one of the additional cutting heads, the right-angle milling head can be used to complete four-sided processing at right angles to the direction of the machine tool spindle, and is widely used in daily processing.

The ordinary right-angle milling head used in daily processing needs to complete the machining of the four sides of the workpiece by rotating the milling head spindle in four 90-degree directions. The ordinary right-angle milling head generally uses manual operations such as clamping and direction rotation. Compared with the right-angle milling head with automatic clamping and automatic steering, although the manual operation of the right-angle milling head affects the processing efficiency, due to its large joint surface, Strong bearing capacity, suitable for strong cutting. When clamping milling cutters and other powerful cutting tools, because the installation accuracy is not high, usually the milling cutters can be directly connected to the end face of the spindle through screws, and there is no need to use the spindle taper shank for positioning and square keys to transfer cutting. Torque, etc. to install. At this time, when using a common right-angle milling head to complete the four-sided machining, since the milling cutter can only be installed on the end face of the main shaft, the processing operator needs to change the direction of the main shaft in the right-angle milling head many times, which affects the processing efficiency; at the same time, due to the two parallel machining The position accuracy of the surface is affected by the positioning accuracy after the spindle of the right-angle milling head rotates, and this method is not conducive to the guarantee of the position accuracy of the parallel processing surface. Chinese patent document (Patent No. 200710044008.8) discloses a bevel gear right-angle milling head. By changing the direction of rotation of the milling cutter, the inner surface such as a hole or the end surface parallel to the spindle of the milling machine can be machined. It is impossible to complete double-sided machining, that is, to complete the milling of two parallel planes or multiple parallel planes in the case of one spindle positioning.

Contents of the invention

The purpose of the utility model is to overcome the above disadvantages, thereby providing a reasonable right-angle milling head that can be used for double-sided processing. In the powerful milling process, the number of rotations of the right-angle milling head spindle can be reduced, which is beneficial to the improvement of processing efficiency; at the same time, because the milling process of two parallel planes or multiple parallel planes is completed in the case of one spindle positioning, it is beneficial Guaranteed positional accuracy between parallel planes.

In order to achieve the purpose of the above invention, the technical solution of the utility model is as follows: a double-sided right-angle milling head, including a first bevel gear, a middle steering device, a main shaft, a front support device, a rear support device, a milling head box, and a front compression device, back-end compression device. The middle steering device includes a second bevel gear bonded to the first bevel gear, a second flat key, a first spacer, a second spacer and a first lock nut, and the second bevel gear passes through the second flat key. The key is connected to the main shaft, and the first spacer and the second spacer are set on the main shaft and are respectively located on the left and right sides of the second bevel gear. Adjusting the first locking nut on the left side of the first spacer can move the first spacer The ring, the second bevel gear and the second spacer are on the shoulder of the main shaft; in the middle of the main shaft, there are two key slots, and two second flat keys are installed, and the second bevel gear is installed on the shaft through the second flat key. On the main shaft, a second spacer ring is installed between the second bevel gear and the middle step of the main shaft, and the first spacer ring is arranged on the left side of the second bevel gear, and is locked by the first locking nut installed on the main shaft. The second bevel gear meshes with another first bevel gear that transmits the output torque of the main shaft, thereby transmitting the cutting torque to the main shaft. The front-end support device includes a first cylindrical roller bearing, a third spacer, a first thrust ball bearing, a fourth spacer, a second thrust ball bearing and a second lock nut fitted on the main shaft, wherein the fourth spacer The ring is in contact with the step on the front end of the milling head box, and the fifth spacer is installed between the fourth spacer and the outer steel ring of the first cylindrical roller bearing; the rear end support device includes the second cylindrical roller bearing , the sixth spacer, the third thrust ball bearing, the seventh spacer, the fourth thrust ball bearing and the third lock nut, the seventh spacer is in contact with the step on the rear end of the right-angle milling head box, and the seventh spacer An eighth spacer is arranged between the outer steel ring of the second cylindrical roller bearing; the front-end pressing device includes a first flange cover, a first sealing spacer and a first sealing spacer, and the first sealing spacer Arranged on the right side of the outer steel ring of the first cylindrical roller bearing and the second sealing spacer to form a labyrinth seal structure, the first flange cover has a sealing ring groove, and the first flange cover is connected to the right-angle milling head box through screws Connection; together with the labyrinth seal structure formed by the second sealing spacer at the front end of the main shaft, it forms a protective structure to prevent impurities from entering the right-angle milling head and preventing lubricating oil from flowing out of the right-angle milling head box through the end face of the main shaft. The rear-end pressing device includes a second flange cover, a third sealing spacer and a fourth sealing spacer, the third sealing spacer is arranged on the left side of the cylindrical roller bearing, and the third sealing spacer is connected to the fourth sealing spacer. The labyrinth seal structure is formed by a labyrinth ring. There is a sealing ring groove on the second flange cover, and the second flange cover is connected with the right-angle milling head box through screws; the sealing groove on the second flange cover is connected with the main shaft after the sealing gasket is installed. The labyrinth seal structure composed of the third sealing spacer and the fourth sealing spacer at the front end together forms a protective structure, preventing impurities from entering the right-angle milling head and preventing lubricating oil from flowing out of the right-angle milling head box through the end face of the spindle. The double-sided right-angle milling head also includes a first flat key, a shaft sleeve, a pull rod and a ninth spacer. The main shaft is a hollow main shaft. The shaft sleeve is connected to the rear end of the main shaft through the first flat key, and the pull rod is located in the shaft hole of the main shaft. Inside, the ninth spacer is set on the left end of the tie rod and placed in the counterbore at the rear end of the main shaft.

When the utility model is used to install a cutter for cutting, double-sided processing can be completed. When the cutting tool is installed at the front end of the main shaft, it can be connected with the tool handle through the thread at the front end of the tie rod, and adjusted through the ninth spacer; when it is necessary to install the milling cutter on the rear end of the main shaft, the milling cutter can be directly connected by the screw Connect with shaft sleeve. Therefore, in use, the double-sided right-angle milling head can complete the powerful milling of parallel planes under the condition of one spindle positioning. The utility model has a simple, compact and reasonable structure; due to the increase of the installation surface of the cutter, the adjustment operation of the right-angle milling head during processing is reduced, and the production efficiency can be obviously improved; at the same time, because the right-angle milling head can be adjusted once The powerful milling process of multiple parallel planes is completed, which can ensure the position accuracy of multiple milling planes.

Description of drawings

Embodiments of the invention will be further described in detail below in conjunction with the accompanying drawings.

Fig. 1 is the general structural diagram of the present utility model.

Among them: 1. Right-angle milling head box, 2. Second flange cover, 3. Third sealing spacer, 4. Fourth sealing spacer, 5. Shaft sleeve, 6. First flat key, 7. Main shaft, 8. Tie rod, 9. Second cylindrical roller bearing, 10. Sixth spacer, 11. Eighth spacer, 12. Third thrust ball bearing, 13. Seventh spacer, 14. Fourth thrust ball bearing, 15. The third lock nut, 16. The first lock nut, 17. The first spacer, 18. The second flat key, 19. The second bevel gear, 20. The second spacer, 21. The second lock Nut, 22. The second thrust ball bearing, 23. The fourth spacer, 24. The first thrust ball bearing, 25. The fifth spacer, 26. The third spacer, 27. The first cylindrical roller bearing, 28. The first sealing spacer, 29. The first sealing spacer, 30. The first flange cover, 31. The first bevel gear, 32. The ninth spacer, 33. The front support device, 34. The middle steering device, 35. Rear end supporting device, 36. the first flange cover, 37. rear end pressing device.

Detailed ways

As shown in Figure 1, a double-sided right-angle milling head includes a first bevel gear (31), a middle steering device (34), a main shaft (7), a front support device (33), a rear support device (35), Right-angle milling head box (1), front-end pressing device (30), rear-end pressing device (37); the middle steering device ( 34 ) includes a second bevel gear bonded to the first bevel gear (31) (19), the second flat key (18), the first spacer (17), the second spacer (20) and the first lock nut (16), the second bevel gear (19) passes through the second The key (18) is connected to the main shaft (7), and the first spacer (17) and the second spacer (20) are set on the main shaft (7) and are respectively located on the left and right sides of the second bevel gear (19). Adjust the first locking nut (16) on the left side of the first spacer (17) to push the first spacer (17), the second bevel gear (19) and the second spacer (20) against the main shaft (7) On the shoulder of the shaft; in the middle of the main shaft (7), two keyways are designed, and two second flat keys (18) are installed, and the second bevel gear (19) is installed on the main shaft ( 7), the second spacer (20) is installed at the middle step between the second bevel gear (19) and the main shaft (7), and the first spacer (17) is arranged on the left side of the second bevel gear (19). The first locking nut installed on the main shaft is locked. The second bevel gear (19) meshes with another first bevel gear (31) that transmits the output torque of the main shaft, thereby transmitting the cutting torque to the main shaft ( 7 ); 7) The first cylindrical roller bearing (27), the third spacer (26), the first thrust ball bearing (24), the fourth spacer (23), the second thrust ball bearing (22) and the second The lock nut (21), wherein the fourth spacer (23) is in contact with the step on the front end of the milling head case (1), and the outer steel between the fourth spacer (23) and the first cylindrical roller bearing (27) The fifth spacer (25) is installed between the rings; the rear end support device ( 35 ) includes the second cylindrical roller bearing (9), the sixth spacer (10), the third thrust ball bearing (12), The seventh spacer (13), the fourth thrust ball bearing (14) and the third lock nut (15), the seventh spacer (13) is in contact with the step on the rear end of the right-angle milling head box (1). An eighth spacer (11) is arranged between the seven spacers (13) and the outer steel ring of the second cylindrical roller bearing (9); through the front support device ( 33 ) and the rear support arranged on the main shaft (7) In the device ( 35 ), the main shaft (7) is installed in the right-angle milling head casing (1), and can rotate around the center line of the main shaft (7). The front-end pressing device ( 30 ) includes a first flange cover (36), a first sealing spacer (28) and a first sealing spacer (29), and the first sealing spacer (28) is arranged on the first cylinder The right side of the outer steel ring of the roller bearing (27) forms a labyrinth seal structure with the second sealing spacer (29). The first flange cover (30) has a sealing ring groove, and the first flange cover (36) passes through Screws are connected to the right-angle milling head box (1); the rear-end pressing device ( 37 ) includes the second flange cover (2), the third sealing spacer (3) and the fourth sealing spacer (4), The third sealing spacer (3) is arranged on the left side of the cylindrical roller bearing (9). The third sealing spacer (3) and the fourth sealing spacer (4) form a labyrinth seal structure. The second flange cover (2) There is a sealing ring groove on the top, and the second flange cover (2) is connected with the right-angle milling head box (1) by screws; the double-sided right-angle milling head also includes the first flat key (6), the shaft sleeve (5), and the tie rod (8) and the ninth spacer (32), the main shaft (7) is a hollow main shaft, the bushing (5) is connected to the rear end of the main shaft (7) through the first flat key (6), and the pull rod (8) Located in the shaft hole of the main shaft (7), the ninth spacer ring (32) is sleeved on the left end of the pull rod (8) and placed in the counterbore at the rear end of the main shaft (7). When the utility model is used to install a cutter for cutting, double-sided processing can be completed. When the cutting tool is installed at the front end of the main shaft (7), it can be connected with the tool handle through the thread at the front end of the tie rod (8), and adjusted through the ninth spacer ring (32); When milling the cutter disc, the milling cutter disc can be directly connected to the shaft sleeve by screws. Therefore, in use, the double-sided right-angle milling head can complete powerful milling of parallel planes under the condition of primary spindle (7) positioning.

The utility model has a simple, compact and reasonable structure; due to the increase of the installation surface of the cutter, the adjustment operation of the right-angle milling head during processing is reduced, and the production efficiency can be obviously improved; at the same time, because the right-angle milling head can be adjusted once The powerful milling process of multiple parallel planes is completed, which can ensure the position accuracy of multiple milling planes.

Claims (1)

1. A double-sided right-angle milling head, comprising a first bevel gear (31), a middle steering device (34), a main shaft (7), front-end supporting device (33), rear-end supporting device (35), milling head box (1), front-end pressing device (30), rear-end pressing device (37), wherein: the middle part turns to The device (34) includes: a second bevel gear (19) bonded to the first bevel gear (31), a second flat key (18), a first spacer (17), a second spacer (20) and a second A lock nut (16), the second bevel gear (19) is connected on the main shaft (7) through the second flat key (18), and the first spacer (17) and the second spacer (17) are sleeved on the main shaft (7). Spacer ring (20) is positioned at the left side and the right side of second bevel gear (19) respectively, and the first locking nut (16) on the left side of first spacer ring (17) can be adjusted to first spacer ring (17), The second bevel gear (19) and the second spacer (20) stand on the shoulder of the main shaft (7); the front end support device (33) includes: the first cylindrical roller bearing sleeved on the main shaft (7) (27), the third spacer (26), the first thrust ball bearing (24), the fourth spacer (23), the second thrust ball bearing (22) and the second lock nut (21), the fourth Spacer ring (23) is in contact with the step on the front end of the milling head casing (1), and the 5th spacer ring ( 25); the rear support device (35) includes: the second cylindrical roller bearing (9), the sixth spacer (10), the third thrust ball bearing (12), the seventh spacer (13), the Four thrust ball bearings (14) and the third lock nut (15), the seventh spacer ring (13) is in contact with the step on the rear end of the right-angle milling head box (1), and the seventh spacer ring (13) is in contact with the second An eighth spacer (11) is arranged between the outer steel rings of the cylindrical roller bearing (9); the front-end pressing device (30) includes: a first flange cover (36), a first sealing spacer (28 ) and the first sealing spacer (29), the first sealing spacer (28) is arranged on the right side of the outer steel ring of the first cylindrical roller bearing (27) and forms a labyrinth seal structure with the second sealing spacer (29), There is a seal ring groove on the first flange cover (30), and the first flange cover (36) is connected with the right-angle milling head box (1) by screws; the rear end pressing device (37) includes: the second The flange cover (2), the third sealing spacer (3) and the fourth sealing spacer (4), the third sealing spacer (3) is arranged on the left side of the cylindrical roller bearing (9), the third sealing spacer (3) and the fourth sealing spacer (4) form a labyrinth sealing structure, the second flange cover (2) has a sealing ring groove, and the second flange cover (2) is connected with the right-angle milling head box (1 ) connection; it is characterized in that : the double-sided right-angle milling head also includes a first flat key (6), a shaft sleeve (5), a pull rod (8) and a ninth spacer (32), and the main shaft (7) is a hollow The main shaft and the sleeve (5) are connected to the rear end of the main shaft (7) through the first flat key (6), the pull rod (8) is located in the shaft hole of the main shaft (7), and the ninth spacer (32) is set on the pull rod ( 8) placed in the counterbore of the main shaft (7) rear end on the left end.

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