CN210549516U

CN210549516U - Oscillating type machining table mechanism and numerical control machining equipment thereof

Info

Publication number: CN210549516U
Application number: CN201921321152.6U
Authority: CN
Inventors: 于宙
Original assignee: Nanjing Lingrui Technology Co Ltd
Current assignee: Nanjing Lingrui Technology Co Ltd
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2020-05-19
Anticipated expiration: 2029-08-15

Abstract

The utility model discloses an oscillating processing platform mechanism and numerical control processing equipment thereof. The swing type machining table mechanism is used for being installed on numerical control machining equipment and comprises a support, a machining table, a swing frame and a driving mechanism. The processing table is arranged between the two brackets through swing frames on two sides. The swing frame is arranged on the bracket through a swing shaft. The driving mechanism is arranged between the support and the swing frame and used for driving the swing frame to swing. The driving mechanism comprises a screw rod and a driving frame. The driving frame is provided with a motor and a thread sleeve wheel. The driving frame is installed on the swinging frame through a first hinge. The screw rod passes through the screw sleeve wheel and is meshed with the screw sleeve wheel through threads. One end of the screw rod is arranged on the bracket through a second hinge. The motor is connected with the screw sleeve wheel. The utility model discloses the produced error of servo motor is dwindled greatly after being driven by the lead screw silk braid, consequently greatly reduced servo motor's required precision.

Description

Oscillating type machining table mechanism and numerical control machining equipment thereof

Technical Field

The utility model relates to a numerical control processing equipment, in particular to swing mechanism of processing platform.

Background

Five axes in the five-axis linkage numerical control machining equipment are not limited to XYZ three-axis translation and additional swinging shafts and rotating shafts. The swing shaft is horizontal and the rotating shaft is vertical. The translation of XYZ triaxial acts on the headstock for the headstock can step on in XYZ triaxial direction. The main spindle box is a mechanism for mounting a cutter in numerical control machining equipment. The cutter is driven by the main spindle box to rotate at a high speed to realize the processing operations such as milling and boring of materials. The rotation of the rotating shaft acts on the processing table, so that the processing table can rotate, and the material fixed on the processing table rotates along with the processing table. The swing axis in five axes has two modes: the first is that a swinging shaft acts on a main spindle box, so that the main spindle box can swing around the swinging shaft; the second mode is that the oscillating shaft acts on the processing table, so that the processing table can oscillate around the oscillating shaft to drive the material fixed on the processing table to oscillate around the oscillating shaft.

In a conventional numerical control machining apparatus, when the oscillating shaft acts on the machining table, a driving mechanism for driving the machining table to oscillate around the oscillating shaft is generally connected to the oscillating shaft directly through a servo motor or connected to the oscillating shaft through an index plate by a servo motor. In high-precision numerical control machining equipment, the mode of the driving mechanism requires a servo motor to have high precision. As is well known, a high-precision servo motor is not only expensive, but also not always available.

Disclosure of Invention

The utility model discloses the problem that will solve: in high-precision numerical control processing equipment, a servo motor is adopted to directly drive a processing table to swing or the servo motor is adopted to drive the processing table to swing through a dividing plate, so that the servo motor has high precision, and the precision of the servo motor in the market cannot meet the requirement of the overall precision of the numerical control processing equipment.

In order to solve the above problem, the utility model discloses a scheme as follows:

the swing type processing table mechanism comprises a bracket, a processing table, a swing frame and a driving mechanism; the processing table is arranged between the two brackets through swing frames on two sides; the swing frame is arranged on the bracket through a swing shaft, so that the processing table and the swing frame can swing around the swing shaft; the driving mechanism is arranged between the support and the swing frame and used for driving the swing frame to swing; the driving mechanism comprises a screw rod and a driving frame; the driving frame is provided with a motor and a screw sleeve wheel; the driving frame is arranged on the swinging frame through a first hinge; the screw rod passes through the screw sleeve wheel and is meshed with the screw sleeve wheel through threads; one end of the screw rod is arranged on the bracket through a second hinge; the motor is connected with the screw sleeve wheel and can drive the screw sleeve wheel to rotate; the rotating screw sleeve wheel drives the swing frame to swing through the thread meshing effect between the screw sleeve wheel and the screw rod.

Further, according to the oscillating type processing table mechanism of the utility model, the oscillating frame is provided with a U-shaped groove; the driving frame is arranged in the U-shaped groove through a first hinge.

Further, according to the utility model discloses an oscillating processing platform mechanism, the axle center of first hinge is located the coplanar with the axle center of lead screw.

Further, according to the oscillating type processing table mechanism of the utility model, the driving frame is also provided with a toothed belt wheel; the motor is connected with a toothed belt wheel; the toothed belt wheel and the wire sleeve wheel are connected through a synchronous belt.

According to the utility model discloses a numerical control processing device, the device comprises a main spindle box and the swing type processing platform mechanism; the spindle box is arranged above a processing table of the swing type processing table mechanism through an XYZ three-axis linkage mechanism.

The technical effects of the utility model are as follows: the utility model discloses a swing actuating mechanism's servo motor is rotatory through the drive silk braid, rotatory silk braid again through with the lead screw between the screw thread engagement effect drive silk braid along the lead screw remove, and then drive the whole lead screw removal of drive rack, finally drive whole swing span and processing platform and swing around the oscillating axle. Therefore, the error range of the swing angle of the processing table depends on the thread precision of the screw rod thread sleeve, and the error generated by the servo motor is greatly reduced after being transmitted by the screw rod thread sleeve. The radian error of the servo motor is reflected in that the error of the swing angle of the processing table is less than one hundredth radian. Therefore, the precision requirement of the servo motor is greatly reduced.

Drawings

Fig. 1 is a schematic front view of an embodiment of a swing type table mechanism according to the present invention.

Fig. 2 is a schematic view of the inner side surface structure of fig. 1.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, the swing type machining table mechanism includes a support 1, a machining table 2, a swing frame 3, and a driving mechanism. The two supports 1 and the two swing frames 3 are respectively arranged at two sides of the processing table 2 and used for supporting the processing table 2. The support 1 is in a plate frame structure. The two supports 1 are parallel to each other. The two swing frames 3 are respectively mounted on the two brackets 1 via swing shafts 31 and are located inside the brackets 1 so that the swing frames 3 can swing about the swing shafts 31. The swing shaft 31 is horizontal, and the swing shafts 31 of the two swing frames 3 are coaxial. The processing table 2 is mounted between the two supports 1 via the swing frames 3 on both sides, i.e., the processing table 2 is mounted between the two swing frames 3 and can swing in accordance with the swing of the swing frames 3.

The driving mechanism is arranged between the bracket 1 and the swing frame 3, is used for driving the swing frame 3 to swing, and comprises a screw rod 4 and a driving frame 5. The driving frame 5 is provided with a motor 51, a toothed belt wheel 52 and a wire sleeve wheel 53. The top of the swing frame 3 is provided with a U-shaped groove 32. The drive frame 5 is mounted in the U-shaped groove 32 by the first hinge 33 so that the motor 51, the sprocket wheel 52, the wire wheel 53, and the drive frame 5 as a whole can rotate about the axial center of the first hinge 33. The motor 51 is a servo motor and is connected to a sprocket 52. The toothed pulley 52 and the wire sleeve pulley 53 are connected by a timing belt. The screw 4 passes through the thread bushing wheel 53 and is engaged with the thread bushing wheel 53 through threads. That is, the wire sheave 53 of the present embodiment is a synchronous pulley internally threaded, and the toothed pulley 52 is a synchronous pulley. One end of the screw 4 is mounted on the mounting frame 1 through a second hinge 41 and can swing around the second hinge 41. The other end of the screw rod 4 is provided with a limiting block 42. Thereby, the motor 51 drives the screw wheel 53 to rotate through the toothed belt wheel 52 and the timing belt, the rotating screw wheel 53 is driven by the screw engagement with the screw rod 4, and the motor 51, the toothed belt wheel 52, the screw wheel 53, and the driving frame 5 move along the screw rod 4 as a whole. The drive carriage 5 moving along the screw 4 swings the swing frame 3 about the swing shaft 31, thereby swinging the machining table 2 about the swing shaft 31. It should be noted that, in order to maximize the force of the screw wheel 53 acting on the swing frame 3, the axis of the screw rod 4 passes through the axis of the first hinge 33, so that the axis of the first hinge 33 and the axis of the screw rod 4 are in the same plane.

The oscillating type processing table mechanism of the embodiment is used for being installed on a numerical control processing device. The numerical control machining equipment at least comprises the swing type machining table mechanism, the XYZ three-axis linkage mechanism and the spindle box. The headstock is installed on XYZ triaxial link gear for make the headstock can be when XYZ triaxial is upwards synchronous translation to make the headstock be located the processing platform 2 top of oscillating processing platform mechanism, realize processing the operation to the material on the processing platform 2. The XYZ three-axis linkage mechanism has various embodiments, which are familiar to those skilled in the art and will not be described in detail herein. The processing platform can be provided with a rotating platform again, so that the materials are fixed on the rotating platform and can rotate. The structure of the turntable is well known to those skilled in the art, and the description thereof is omitted here.

Claims

1. A swing type processing table mechanism comprises a bracket (1), a processing table (2), a swing frame (3) and a driving mechanism; the processing table (2) is arranged between the two brackets (1) through the swing frames (3) at the two sides; the swing frame (3) is arranged on the bracket (1) through a swing shaft (31), so that the processing table (2) and the swing frame (3) can swing around the swing shaft (31); the driving mechanism is arranged between the bracket (1) and the swing frame (3) and is used for driving the swing frame (3) to swing; the device is characterized in that the driving mechanism comprises a screw rod (4) and a driving frame (5); a motor (51) and a wire sleeve wheel (53) are arranged on the driving frame (5); the driving frame (5) is arranged on the swinging frame (3) through a first hinge (33); the screw rod (4) passes through the screw sleeve wheel (53) and is meshed with the screw sleeve wheel (53) through threads; one end of the screw rod (4) is arranged on the bracket (1) through a second hinge (41); the motor (51) is connected with the thread sleeve wheel (53) and can drive the thread sleeve wheel (53) to rotate; the rotating thread sleeve wheel (53) drives the swing frame (3) to swing through the thread meshing action between the rotating thread sleeve wheel and the screw rod (4).

2. The oscillating machining table mechanism according to claim 1, characterized in that the oscillating frame (3) is provided with a U-shaped groove (32); the driving frame (5) is arranged in the U-shaped groove (32) through a first hinge (33).

3. The oscillating table mechanism of claim 1, wherein the axis of the first hinge (33) is in the same plane as the axis of the screw (4).

4. The oscillating table mechanism of claim 1, characterized in that a toothed pulley (52) is also mounted on the driving frame (5); the motor (51) is connected with a toothed belt wheel (52); the toothed belt wheel (52) and the wire sleeve wheel (53) are connected through a synchronous belt.

5. A numerical control machining apparatus characterized by comprising a spindle head and the swing type table mechanism of claim 1 or 2 or 3 or 4; the spindle box is arranged above a processing table (2) of the swing type processing table mechanism through an XYZ three-axis linkage mechanism.