Side cross milling head of machining center

Abstract

The utility model relates to a lateral cross milling head of a machining center. The lateral cross milling head comprises a shell, the rotating shaft is rotationally arranged in the shell, and a taper hole matched with a milling cutter handle is formed in the front end of the rotating shaft; the broach assembly is arranged at the tail of the rotating shaft and used for tensioning the knife handle; the mounting assembly is fixedly connected with the shell and is used for mounting the shell on a shaft seat of a machine tool main shaft; the transmission assembly is connected with the machine tool spindle and used for driving the rotating shaft to rotate, the shell is installed on a shaft base of the machine tool spindle through the installation assembly, part of the self weight of the side milling head and lateral cutting force generated during machining are transferred to the shaft base of the machine tool spindle, the burden on the spindle is reduced, and abrasion of the spindle is reduced. The precision of the main shaft is effectively improved, the service life of the main shaft is effectively prolonged, and meanwhile installation is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of side milling heads, in particular to a side transverse milling head for a machining center. Background Art

[0002] The side milling head is a machine tool accessory. After the machine tool is equipped with the milling head, the tool rotation centerline can be angled with the spindle rotation centerline to process the workpiece. Originating in Europe, it is now widely used in various fields of mechanical processing such as aviation, automobiles, and molds. Using the side milling head, the processing range and adaptability of the machine tool can be increased without changing the machine tool structure, making some processing that is difficult to complete with traditional methods possible, reducing repeated clamping of the workpiece, and improving processing accuracy and efficiency.

[0003] The existing side milling head is generally installed on the spindle directly through the broaching device in the machine tool, and then a limit device is set on the spindle seat to prevent the side milling head housing from rotating with the spindle. This method will make the weight of the side milling head entirely borne by the spindle. During machining, the spindle not only has to bear the weight of the side milling head itself, but also has to bear the lateral cutting force during machining, which can easily lead to spindle wear or reduced accuracy. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a side transverse milling head for a machining center.

[0005] The purpose of the utility model can be achieved through the following technical solutions: A side milling head of a machining center, comprising a shell; a rotating shaft, which is rotatably arranged in the shell, and the front end of the rotating shaft is provided with a tapered hole matching the milling cutter shank; a broaching assembly, which is arranged at the tail of the rotating shaft and is used to tighten the shank; an installation assembly, which is fixedly connected to the shell and is used to install the shell on the shaft seat of the machine tool spindle; a transmission assembly, which is connected to the machine tool spindle and is used to drive the rotating shaft to rotate.

[0006] Preferably, the broach assembly includes a broach bolt movably arranged at the tail of the rotating shaft, and the broach bolt passes through the interior of the rotating shaft and extends into the tapered hole.

[0007] Preferably, the transmission assembly includes a transmission shaft rotatably arranged on the housing, the transmission shaft is arranged at 90 degrees to the rotating shaft, one end of the transmission shaft is provided with a first bevel tooth, the rotating shaft is provided with a second bevel tooth engaged with the first bevel tooth, the other end of the transmission shaft is provided with a tapered shank connected to the machine tool spindle, and the end of the tapered shank is provided with a pull nail.

[0008] Preferably, oiling nozzles are provided on the housing at positions corresponding to the first bevel gear and the second bevel gear.

[0009] Preferably, the mounting assembly includes a mounting sleeve arranged on the housing and located outside the transmission shaft, a contraction groove is vertically opened on the mounting sleeve, locking seats are provided on both sides of the contraction groove, and locking bolts are provided on the locking seats.

[0010] Preferably, a dust cover is provided on the housing at the tail of the rotating shaft, and a sealing ring is provided between the dust cover and the rotating shaft.

[0011] Preferably, the front end face of the rotating shaft is provided with an end face key.

[0012] The beneficial effect of the present invention is that the present invention installs the shell onto the shaft seat of the machine tool spindle through the installation component, so that part of the side milling head's own weight and the lateral cutting force generated during processing are transferred to the shaft seat of the machine tool spindle, reducing the burden on the spindle, reducing the wear of the spindle, effectively improving the accuracy and service life of the spindle, and making installation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention is further described with reference to the accompanying drawings. However, the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other drawings based on the following drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of a side transverse milling head of a machining center according to the present invention.

[0015] Figure 2 This is a cross-sectional view of a side milling head of a machining center according to the present invention.

[0016] Figure 3 The utility model is a schematic diagram of the rotating shaft structure of the side transverse milling head of a machining center.

[0017] Figure 4 for Figure 1 Partial schematic diagram at point A in the middle.

[0018] The numbers shown in the figure are: 1. Housing; 2. Rotating shaft; 201. Tapered hole; 202. Second tapered tooth; 203. End face key; 3. Mounting assembly; 301. Mounting sleeve; 302. Shrinkage groove; 303. Locking seat; 304. Locking bolt; 4. Transmission assembly; 401. Transmission shaft; 402. First tapered tooth; 403. Tapered shank; 404. Pull nail; 5. Broach bolt; 6. Oiling nozzle; 7. Dust cover; 701. Sealing ring. DETAILED DESCRIPTION

[0019] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0020] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0021] The following will be combined with specific embodiments to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0022] See Figures 1 to 4 As shown, the structure of the utility model is: a side transverse milling head of a machining center, comprising a shell 1, a rotating shaft 2 is rotatably arranged in the shell 1, a tapered hole 201 is provided at the front end of the rotating shaft 2, the milling cutter is installed in the tapered hole 201 through a tool holder, a broach assembly is provided at the tail end of the rotating shaft 2, the tool holder is fixed in the tapered hole 201 through the broach assembly, a mounting assembly 3 is fixedly connected to the shell 1, the shell 1 is connected to the shaft seat of the machine tool spindle through the mounting assembly 3 to prevent the shell 1 from rotating with the spindle, and at the same time transfer part of its own weight and the lateral cutting force during machining to the shaft seat, and then connected to the machine tool spindle through the transmission assembly 4, driving the rotating shaft 2 to rotate, thereby driving the milling cutter to process the workpiece.

[0023] like Figure 2 As shown, the broach assembly includes a broach bolt 5 movably arranged at the tail of the rotating shaft 2. The broach bolt 5 passes through the interior of the rotating shaft 2 and extends into the tapered hole 201. Specifically, the tool handle is inserted into the tapered hole 201, and then the broach bolt 5 is threadedly engaged with the threaded hole at the tail of the tool handle to firmly tighten the tool handle in the tapered hole 201.

[0024] like Figure 2 、 Figure 3As shown, the transmission assembly 4 includes a transmission shaft 401 rotatably arranged on the housing 1, the transmission shaft 401 is arranged at 90 degrees to the rotating shaft 2, one end of the transmission shaft 401 is provided with a first bevel tooth 402, and the rotating shaft 2 is provided with a second bevel tooth 202 engaged with the first bevel tooth 402, and the other end of the transmission shaft 401 is provided with a tapered handle 403 connected to the machine tool spindle, and the end of the tapered handle 403 is provided with a pull pin 404. Specifically, the tapered handle 403 is connected to the machine tool spindle, and then the broaching device in the machine tool spindle tightens the pull pin 404, and the transmission shaft 401 is driven to rotate through the machine tool spindle, and the first bevel tooth 402 is engaged with the second bevel tooth 202, thereby driving the rotating shaft 2 to rotate.

[0025] like Figure 1 As shown, an oiling nozzle 6 is provided on the housing 1 at a position corresponding to the first bevel gear 402 and the second bevel gear 202 . Specifically, the oiling nozzle 6 is used to add lubricating oil to the first bevel gear 402 and the second bevel gear 202 .

[0026] like Figure 2 、 Figure 4 As shown, the mounting assembly 3 includes a mounting sleeve 301 arranged on the shell 1 and located outside the transmission shaft 401. A contraction groove 302 is vertically opened on the mounting sleeve 301. Locking seats 303 are provided on both sides of the contraction groove 302. The locking seats 303 are provided with locking bolts 304. Specifically, the mounting sleeve 301 is mounted on the shaft seat of the machine tool spindle, and then the locking bolts 304 are tightened to make the two locking seats 303 move closer and drive the contraction groove 302 to contract, so that the mounting sleeve 301 firmly clamps the shaft seat.

[0027] like Figure 2 As shown, a dust cover 7 is provided on the shell 1 at the tail end of the rotating shaft 2, and a sealing ring 701 is provided between the dust cover 7 and the rotating shaft 2. Specifically, the dust cover 7 is used to prevent foreign matter such as iron filings and dust from entering the shell 1 during cutting, and the sealing ring 701 is used to increase the sealing between the dust cover 7 and the rotating shaft 2.

[0028] like Figure 2 、 Figure 3 As shown, the front end face of the rotating shaft 2 is provided with an end key 203. Specifically, the end key 203 is used to transmit torque between the spindle and the tool holder to ensure that there is no slipping during high-speed rotation, thereby ensuring the stability and accuracy of the processing. In addition, the end key 203 can also prevent the tool holder from moving in the axial direction, avoiding processing errors caused by the movement of the tool holder and improving the processing quality.

[0029] During specific use, the transmission component 4 is connected to the machine tool spindle, and the mounting component 3 is mounted on the shaft seat of the machine tool spindle. After adjusting the angle, the mounting component 3 is clamped to the shaft seat, so that part of the side milling head's own weight and the lateral cutting force generated during processing are transferred to the shaft seat of the machine tool spindle, reducing the burden on the spindle. The milling cutter is then installed in the tapered hole 201 through the tool holder, and the tool holder is then firmly fixed in the tapered hole 201 through the broaching assembly. The machine tool spindle drives the rotating shaft 2 to rotate through the transmission component 4, driving the milling cutter to process the workpiece.

[0030] The above further describes the present invention with the help of specific embodiments, but it should be understood that the specific description here should not be construed as limiting the essence and scope of the present invention. Various modifications made to the above embodiments by ordinary technicians in this field after reading this specification are all within the scope of protection of the present invention.

Claims

1. A side milling head for a machining center, characterized by: comprising a housing (1); A rotating shaft (2) is rotatably disposed in the housing (1), and a tapered hole (201) matching the milling cutter handle is provided at the front end of the rotating shaft (2); A broach assembly, arranged at the tail of the rotating shaft (2), for tightening the broach handle; A mounting assembly (3) fixedly connected to the housing (1) and used for mounting the housing (1) on a shaft seat of a machine tool spindle; The transmission assembly (4) is connected to the main shaft of the machine tool and is used to drive the rotating shaft (2) to rotate.

2. A side milling head for a machining center according to claim 1, characterized in that: The broach assembly comprises a broach bolt (5) movably arranged at the tail of the rotating shaft (2); the broach bolt (5) passes through the interior of the rotating shaft (2) and extends into the tapered hole (201).

3. The side milling head for a machining center according to claim 1, characterized in that: The transmission assembly (4) comprises a transmission shaft (401) rotatably arranged on the housing (1), the transmission shaft (401) being arranged at 90 degrees to the rotating shaft (2), one end of the transmission shaft (401) being provided with a first bevel tooth (402), the rotating shaft (2) being provided with a second bevel tooth (202) meshing with the first bevel tooth (402), the other end of the transmission shaft (401) being provided with a tapered shank (403) connected to a main shaft of a machine tool, and the end of the tapered shank (403) being provided with a pull pin (404).

4. The side milling head for a machining center according to claim 3, characterized in that: Oiling nozzles (6) are provided on the housing (1) at positions corresponding to the first bevel gear (402) and the second bevel gear (202).

5. The side milling head for a machining center according to claim 1, characterized in that: The mounting assembly (3) comprises a mounting sleeve (301) arranged on the housing (1) and located outside the transmission shaft (401); a contraction groove (302) is vertically provided on the mounting sleeve (301); locking seats (303) are provided on both sides of the contraction groove (302); and locking bolts (304) are provided on the locking seats (303).

6. The side milling head for a machining center according to claim 1, characterized in that: A dust cover (7) is provided on the housing (1) at the rear of the rotating shaft (2), and a sealing ring (701) is provided between the dust cover (7) and the rotating shaft (2).

7. The side milling head for a machining center according to claim 1, characterized in that: The front end face of the rotating shaft (2) is provided with an end face key (203).

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