Mechanism for adjusting relative position accuracy of 45° tilt head B axis and spindle axis

Abstract

The utility model belongs to the field of mechanical equipment manufacturing, concretely relates to a mechanism for adjusting the relative position accuracy of 45 degree inclined swing head B shaft and spindle axis. The technical scheme is as follows: including match grinding connecting plate and angle adjusting structure, spindle box is connected with inclined swing head through two match grinding connecting plates; angle adjusting structure includes two jackscrews and two tension bolts, the base of inclined swing head is equipped with two screw holes and two through holes on the side opposite to spindle box, two through holes are located between two screw holes, spindle box is equipped with two screw holes two, and screw hole two corresponds with the position of through hole; the jackscrew is screwed into screw hole one and its end head is close to spindle box, and the tension bolt passes through the through hole and is screwed into screw hole two. The mechanism for adjusting the relative position accuracy of 45 degree inclined swing head B shaft and spindle axis can guarantee the precision of 45 degree angle processing, and guarantee the plane position degree of inclined swing head B shaft and spindle axis in Y, Z direction.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical equipment manufacturing, and specifically relates to a mechanism for adjusting the relative position accuracy of the B-axis of a 45° tilting head and the axis of the main shaft. Background Technology

[0002] In the field of modern machining, as the manufacturing industry's demands for product precision, complexity, and production efficiency continue to rise, machine tool technology is constantly innovating. The emergence of five-axis and multi-axis machining centers has made the machining of complex curved surfaces and precision parts possible. As a key link in the assembly technology of vertical and horizontal five-axis machine tools, the development and application of the 45-degree swivel head has a profound industry background and technological demand roots. In the field of precision machining, especially in advanced equipment such as five-axis machining centers, the application of 45-degree swivel heads is becoming increasingly widespread. It can achieve efficient machining of complex curved surfaces, significantly improving machining accuracy and efficiency. Aerospace, high-end equipment manufacturing, and other fields have stringent requirements for high-precision 45° swivel heads. Existing 45° swivel head axis adjustment mechanisms, in adjusting the relative position of the B-axis and the spindle axis during the swivel head assembly process, cannot meet the requirements for precise positioning and stable operation of the swivel head. Utility Model Content

[0003] This invention provides a mechanism for adjusting the relative position accuracy between the B-axis of a 45° tilting head and the axis of the main spindle, which can ensure the accuracy of machining at a 45° angle, while also ensuring the planar position accuracy of the B-axis of the tilting head and the axis of the main spindle in the Y and Z directions.

[0004] The technical solution of this utility model is as follows:

[0005] The mechanism for adjusting the relative position accuracy between the B-axis of the 45° tilting head and the spindle axis includes a grinding connection plate and an angle adjustment structure. The spindle box is connected to the tilting head through two grinding connection plates. The angle adjustment structure includes two tightening bolts and two tensioning bolts. The base of the tilting head has two screw holes and two through holes on the side facing the spindle box. The two through holes are located between the two screw holes. The spindle box has two screw holes, which correspond to the positions of the through holes. The tightening bolts are screwed into screw holes and their ends are pressed against the spindle box. The tensioning bolts pass through the through holes and are screwed into screw holes.

[0006] Furthermore, the mechanism for adjusting the relative positional accuracy of the 45° tilting head B-axis and the main spindle axis includes a slot one on the main spindle box and a slot two on the tilting head. The two sides of the grinding connection plate are respectively placed in slot one and slot two. By adjusting the thickness of the grinding connection plate, the fitting clearance between the main spindle box and the tilting head in the X direction is controlled to ensure the planar positional accuracy of the tilting head B-axis and the main spindle axis in the Y and Z directions.

[0007] Furthermore, the mechanism for adjusting the relative position accuracy between the B-axis of the 45° tilting head and the main shaft axis has a pitch of 0.5mm for the tightening bolt and the pulling bolt. By controlling the number of rotations of the tightening bolt or the pulling bolt, the adjustment accuracy of the tilting head angle is ±0.005°.

[0008] The beneficial effects of this utility model are as follows:

[0009] 1. By precisely controlling the thickness of the grinding connection plate, this utility model can achieve extremely high-precision adjustment of the fit clearance between the spindle box and the tilting head in the X direction, keeping it within a very small range to meet the stringent requirements of precision machining equipment for axis accuracy.

[0010] 2. The angle adjustment structure of this utility model can accurately adjust and stably lock the axis of the tilting head at a 45° position, which fundamentally ensures the accuracy of 45° angle processing; by screwing the bolt in or out, a pushing or pulling force is generated, thereby achieving precise adjustment of the axis position. After adjustment, it is firmly locked to prevent loosening during processing. Attached Figure Description

[0011] Figure 1 A schematic diagram showing a grinding connection plate and an angle adjustment structure between the tilting head and the spindle box;

[0012] Figure 2 Main view showing a grinding connection plate and angle adjustment structure between the tilting head and the spindle box;

[0013] Figure 3 Left view shows a grinding connection plate and an angle adjustment structure between the tilting head and the spindle box;

[0014] Figure 4 This is a schematic diagram of the grinding wheel connection plate. Detailed Implementation

[0015] like Figure 1-4As shown, the mechanism for adjusting the relative position accuracy of the B-axis of the 45° tilting head and the spindle axis includes a grinding connection plate 3 and an angle adjustment structure. The spindle box 1 is connected to the tilting head 2 via two grinding connection plates 3. The angle adjustment structure includes two tightening bolts 4 and two tensioning bolts 5. The base of the tilting head 2 has two screw holes and two through holes on the side facing the spindle box 1. The two through holes are located between the two screw holes 1. The spindle box 1 has two screw holes 2, which correspond to the positions of the through holes. The tightening bolts 4 are screwed into the screw holes 1 with their ends pressed against the spindle box 1. The tensioning bolts 5 pass through the through holes and are screwed into the screw holes 2. The spindle box 1 has a slot 1, and the tilting head 2 has a slot 2. The two sides of the grinding connection plate 3 are placed in slot 1 and slot 2, respectively. By machining and adjusting the thickness of the grinding connection plate 3, the fit clearance between the spindle box 1 and the tilting head 2 in the X direction is controlled to ensure the planar position accuracy of the B-axis of the tilting head and the spindle axis in the Y and Z directions. The pitch of the tightening bolt 4 and the pull bolt 5 is 0.5mm. By controlling the number of rotations of the tightening bolt 4 or the pull bolt 5, the adjustment accuracy of the angle of the tilting head 2 is ±0.005°. When locked, the tightening bolt 4 and the pull bolt 5 can withstand a cutting force and vibration load of no less than 2000N, ensuring the stability of the tilting head 2 during machining. Furthermore, during machining, the displacement error of the tilting head 2 axis is within ±0.005mm, and the angle change error is within ±0.002°.

Claims

1. A mechanism for adjusting the relative positional accuracy of the B-axis of a 45° tilting head and the axis of the main spindle, characterized in that, The device includes a grinding connection plate and an angle adjustment structure. The spindle box is connected to the tilting head via two grinding connection plates. The angle adjustment structure includes two tightening bolts and two pulling bolts. The base of the tilting head has two screw holes and two through holes on the side facing the spindle box. The two through holes are located between the two screw holes. The spindle box has two screw holes, which correspond to the positions of the through holes. The tightening bolts are screwed into the screw holes and their ends are pressed against the spindle box. The pulling bolts pass through the through holes and are screwed into the screw holes.

2. The mechanism for adjusting the relative positional accuracy of the B-axis of the 45° tilting head and the main shaft axis according to claim 1, characterized in that, The spindle box is provided with a first slot, and the slanted head is provided with a second slot. The two sides of the grinding connection plate are placed in the first and second slots respectively. By adjusting the thickness of the grinding connection plate, the fit clearance between the spindle box and the slanted head in the X direction is controlled to ensure the planar position of the B axis of the slanted head and the spindle axis in the Y and Z directions.

3. The mechanism for adjusting the relative positional accuracy of the B-axis of the 45° tilting head and the main shaft axis according to claim 1, characterized in that, The pitch of the tightening bolt and the pull bolt is 0.5mm. By controlling the number of rotations of the tightening bolt or the pull bolt, the adjustment accuracy of the tilting head angle can be ±0.005°.

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