Device for assisting in positioning of B-axis rotation center of swing angle milling head
Technical Field
The invention relates to a device for assisting in positioning a B-axis rotation center of a swing angle milling head, belongs to the field of structural design and manufacturing of technological equipment, and is mainly used in the process of measuring the precision of a B-axis rotation shaft of the swing angle milling head by using a laser interferometer.
Background
When the numerical control machining of large-scale precise complex curved surfaces is carried out, enterprises can use a swing angle milling head to cooperate with a gantry machine tool to carry out five-axis linkage machining. In order to ensure the quality of the processed surface, a processing master machine with excellent processing technology and high precision is required. The structure of the swing angle milling head is mostly B/C shaft or A/C shaft, the cutter is arranged at the tail end of the swing shaft, and the pose adjustment is mainly realized through the movement of the swing shaft. The rotation precision detection of the swing shaft becomes a very critical step.
The laser interferometer is a classic 'measurement and control technology' instrument integrating photoelectric and sensing technologies into a whole, and is a measuring instrument recognized to date with high precision and high sensitivity. The high-precision measuring device can realize high-precision measurement of geometric parameters such as linear length measurement, angle measurement, straightness accuracy, perpendicularity, parallelism and planeness in the mechanical field, and one of the most main applications is machine tool precision detection. When the rotation precision of the oscillating shaft is detected, the axis of the automatic turntable with the angle reflecting mirror in the laser interferometer needs to be superposed with the rotation axis of the oscillating shaft so as to achieve accurate measurement.
The invention discloses a device for assisting in positioning the B-axis rotation center of a swing angle milling head, which is light in structure and easy to disassemble and assemble, is used for assisting in positioning the B-axis rotation center of the swing angle milling head, and can obviously improve the efficiency and positioning accuracy compared with the conventional method for positioning the B-axis rotation center of the swing angle milling head only by adjusting a structure through a manual loose bolt.
Disclosure of Invention
The utility model provides a device that is used for assistance-localization real-time pivot cutter head B axle centre of rotation which characterized in that:
the medicine consists of two parts: the main body fixing support and the rotation center adjusting mechanism;
the main body fixing support mainly comprises two parts, namely a swing angle milling head end face connecting plate (1) and a WR50 rotary table connecting plate (2). The end face connecting plate of the swing angle milling head is used for being connected with the end face of the swing angle milling head, and the connecting plate and the swing angle milling head are guaranteed to have higher parallelism through four matched positioning blocks (3); the WR50 turntable connecting plate is used for fixing the rotation center adjusting mechanism and is connected with the swing angle milling head section connecting plate in a bolt mode, and a triangular rib plate (4) is added for increasing the connecting rigidity of the WR50 turntable connecting plate and the swing angle milling head section connecting plate. And a plurality of grooves and holes are respectively arranged on the connecting plate of the end surface of the swing angle milling head and the connecting plate of the WR50 rotary table, so that the overall structure quality is reduced.
The rotation center adjusting mechanism mainly comprises two parts, namely a vertical position adjusting mechanism and a horizontal position adjusting mechanism. The plumb position adjusting mechanism is used for adjusting the position of the rotation center of the WR50 rotary table in the plumb direction, a plumb adjusting bolt (5) is fixed on a plumb position adjusting fixing plate (6), and a horizontal sliding base (7) is pushed by rotating the plumb adjusting bolt, so that the adjustment of the rotation center in the plumb direction is realized; the horizontal position adjusting mechanism is used for adjusting the position of the rotating center of the WR50 rotary table in the horizontal direction, the horizontal adjusting bolt (8) is fixed on the horizontal position adjusting plate (9), and the WR50 rotary table fixing plate (10) is pushed by rotating the horizontal adjusting bolt, so that the adjustment of the rotating center in the horizontal direction is realized. The WR50 rotary table connecting plate is provided with a scale value, and the plumb bob and the horizontal position of the WR50 rotary table fixing plate can be preliminarily adjusted according to the scale value, so that the subsequent further adjustment is facilitated.
A position fastening bolt (11) is designed on the horizontal sliding base and is used for locking the horizontal sliding base and a WR50 rotary table fixing plate after the rotation center is adjusted.
The WR50 rotary table (12) is fixed on the WR50 rotary table fixed disc (13) in a bolt connection mode, and an angle reflector (14) at the rear end of the WR50 rotary table can reflect laser emitted by the laser emitter back to an SJ6000 laser head.
The invention aims at the rotation center positioning process of the swing angle milling head and comprises seven steps:
and S1, connecting the main body fixing support with the end face of the swing angle milling head.
And S2, manually resetting the vertical position adjusting mechanism and the horizontal position adjusting mechanism.
And S3, adjusting the level, and adjusting the bolt by plumb bob to a specific scale value.
And S4, detecting the circular ring contour of the WR50 turntable fixed disc by using a dial indicator.
And S5, adjusting the horizontal and plumb adjusting bolts again according to the measurement result.
And S6, repeating the steps S4-S5 until the change of the dial indicator value is within the acceptance range.
And S7, fastening bolts at the locking positions, and mounting a WR50 turntable to a WR50 turntable fixing plate.
The step S1 specifically includes: the four positioning blocks are sequentially connected with a connecting plate of the end face of the swing angle milling head, then sequentially connected with the end face of the swing angle milling head, and finally sequentially screwed up according to the sequence of diagonal intersection.
The step S4 specifically includes: the circular ring of the WR50 turntable fixed disk is equally divided into 8 parts, and the values of the dial indicator at 45 degrees, 90 degrees and 135 degrees are measured in sequence, and the values correspond to the swing angle milling head B axis swing at-45 degrees, 0 degrees and 45 degrees. The rotation center is preliminarily positioned by measuring three points, the B axis of the swing angle milling head is adjusted to-45 degrees, and the change value of the dial indicator when the B axis rotates from-45 degrees to 45 degrees is observed.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the positions of the vertical position adjusting mechanism and the horizontal position adjusting mechanism are adjusted, so that the B-axis rotation center of the swing angle milling head can be accurately positioned. The vertical position adjusting mechanism and the horizontal position adjusting mechanism are driven by threads, are positioned highly and have a self-locking function. Compared with the existing method for positioning the rotation center of the B shaft of the swing angle milling head by only adjusting the position of the WR50 rotary table through a manual tightening bolt, the efficiency and the positioning accuracy can be obviously improved through the device.
Drawings
FIG. 1 is a working diagram of a device for assisting in positioning the B-axis rotation center of a swing angle milling head
Fig. 2 is a structural diagram of an apparatus for assisting in positioning the B-axis rotation center of a swing angle milling head: 1 end face connecting plate of swing angle milling head, 2 WR50 turntable connecting plate, 3 positioning blocks and 4 triangular ribbed plates
Fig. 3 is a structural diagram of a rotation center adjusting mechanism: 5 plumb adjusting bolt, 6 plumb position adjusting fixing plate, 7 horizontal sliding base, 8 horizontal adjusting bolt, 9 horizontal adjusting plate, 10 WR50 rotary table fixing plate, 11 position fastening bolt
Fig. 4 WR50 connection mode diagram: 12 WR50 rotary table, 13 WR50 rotary table fixed disc and 14-degree reflecting mirror
FIG. 5 is a profile view of WR50 turntable mounting plate
Detailed Description
The invention is described in detail below with reference to the figures and examples.
The utility model provides a device that is used for assistance-localization real-time pivot cutter head B axle centre of rotation which characterized in that:
the medicine consists of two parts: the main body fixing support and the rotation center adjusting mechanism;
the main body fixing support mainly comprises two parts, namely a swing angle milling head end face connecting plate (1) and a WR50 rotary table connecting plate (2). The end face connecting plate of the swing angle milling head is used for being connected with the end face of the swing angle milling head, and the connecting plate and the swing angle milling head are guaranteed to have higher parallelism through four matched positioning blocks (3); the WR50 turntable connecting plate is used for fixing the rotation center adjusting mechanism and is connected with the swing angle milling head section connecting plate in a bolt mode, and a triangular rib plate (4) is added for increasing the connecting rigidity of the WR50 turntable connecting plate and the swing angle milling head section connecting plate. And a plurality of grooves and holes are respectively arranged on the connecting plate of the end surface of the swing angle milling head and the connecting plate of the WR50 rotary table, so that the overall structure quality is reduced.
The rotation center adjusting mechanism mainly comprises two parts, namely a vertical position adjusting mechanism and a horizontal position adjusting mechanism. The plumb position adjusting mechanism is used for adjusting the position of the rotation center of the WR50 rotary table in the plumb direction, a plumb adjusting bolt (5) is fixed on a plumb position adjusting fixing plate (6), and a horizontal sliding base (7) is pushed by rotating the plumb adjusting bolt, so that the adjustment of the rotation center in the plumb direction is realized; the horizontal position adjusting mechanism is used for adjusting the position of the rotating center of the WR50 rotary table in the horizontal direction, the horizontal adjusting bolt (8) is fixed on the horizontal position adjusting plate (9), and the WR50 rotary table fixing plate (10) is pushed by rotating the horizontal adjusting bolt, so that the adjustment of the rotating center in the horizontal direction is realized. The WR50 rotary table connecting plate is provided with a scale value, and the plumb bob and the horizontal position of the WR50 rotary table fixing plate can be preliminarily adjusted according to the scale value, so that the subsequent further adjustment is facilitated.
A position fastening bolt (11) is designed on the horizontal sliding base and is used for locking the horizontal sliding base and a WR50 rotary table fixing plate after the rotation center is adjusted.
The WR50 rotary table (12) is fixed on the WR50 rotary table fixed disc (13) in a bolt connection mode, and an angle reflector (14) at the rear end of the WR50 rotary table can reflect laser emitted by the laser emitter back to an SJ6000 laser head.
The invention aims at the rotation center positioning process of the swing angle milling head and comprises seven steps:
and S1, connecting the main body fixing support with the end face of the swing angle milling head.
And S2, manually resetting the vertical position adjusting mechanism and the horizontal position adjusting mechanism.
And S3, adjusting the level, and adjusting the bolt by plumb bob to a specific scale value.
And S4, detecting the circular ring contour of the WR50 turntable fixing disc by using a dial indicator.
And S5, adjusting the horizontal and plumb adjusting bolts again according to the measurement result.
And S6, repeating the steps S4-S5 until the change of the dial indicator value is within the acceptance range.
And S7, fastening bolts at the locking positions, and mounting a WR50 turntable to a WR50 turntable fixing plate.
The step S1 specifically includes: the four positioning blocks are sequentially connected with a connecting plate of the end face of the swing angle milling head, then sequentially connected with the end face of the swing angle milling head, and finally sequentially screwed up according to the sequence of diagonal intersection.
The step S4 specifically includes: the circular ring of the WR50 turntable fixed disk is equally divided into 8 parts, and the values of the dial indicator at 45 degrees, 90 degrees and 135 degrees are measured in sequence, and the values correspond to the swing angle milling head B axis swing at-45 degrees, 0 degrees and 45 degrees. The rotation center is preliminarily positioned by measuring three points, the B axis of the swing angle milling head is adjusted to-45 degrees, and the change value of the dial indicator when the B axis rotates from-45 degrees to 45 degrees is observed.