CN107511803A - Precision sliding table with angle adjustment function - Google Patents

Abstract

The invention discloses a precision sliding table with an angle adjusting function, which comprises a base, a movable seat and a linear driving device, wherein the base is arranged on a supporting surface; wherein the movable base is provided with a reference surface, and the linear driving device is connected with the movable base. When the linear driving device reciprocally pulls the movable base, the movable base is driven to reciprocally move relative to the base, so as to change the horizontal elevation angle/rotation angle of the movable base relative to the base.

Description

Precision sliding table with angle adjustment function

technical field

The invention relates to a precision sliding table; in particular, it refers to an innovative structure capable of slightly and precisely adjusting the angle of the movement of the precision sliding table relative to the base.

Background technique

With the advent of the high-tech era, various manufacturing and processing modes have entered the nanometer level. Many precision products have higher and more stringent precision requirements in the manufacturing process. For example, the production line of mobile phone lens, its precision positioning technology has become a must condition.

In the precision machining process, the alignment platform (or alignment slide table) is a device commonly used in the industry; the current typical structural form of the alignment platform is mainly to install a screw guide device between a movable platform and a base. In this way, during its operation, the purpose of driving the movable platform to move or rotate to adjust the processing accuracy can be achieved by controlling the single group movement or the whole movement of the screw guide device.

The driving method of the alignment platform can be roughly divided into two forms: one-side driving and direct driving. Generally speaking, the single-side push method usually uses the restoring force of the tension spring to drive the alignment platform back to its original position, and its advantage is that it is cheap. However, the operation process where every second counts must be continuously shifted and reset quickly, and the tension spring alone cannot keep up with the speed of the machine. Furthermore, the tension spring has the problem of elastic fatigue, which is easy to produce reset errors. The second is the direct driving method. Although such a driving method can overcome the problems of the aforementioned unilateral push method, slow reset speed, and poor precision, it cannot effectively eliminate the play between the components. Bit precision still has room for improvement.

Contents of the invention

The main purpose of the present invention is to provide a precision slide table.

To achieve the above object, the present invention adopts the following technical solutions:

A precision sliding table with angle adjustment function, which includes a base installed on a support surface, a moving seat movably installed on the base, and a linear drive device installed on the base; wherein The moving base is set as a reference plane, and the linear driving device is connected to the moving base; when the linear driving device pulls the moving base reciprocatingly, it can drive the moving base to reciprocate relative to the base, and change the movement of the moving base relative to the base. The angle of the moving seat is extended with a shaft, and the end of the shaft is sequentially set and positioned from the inside to the outside with a first bearing and a second bearing; the free end of the linear drive device is equipped with a drive seat; the drive The seat is formed with a groove, and the first bearing and the second bearing are accommodated in the groove at the same time; the two sides of the groove are respectively fixed with a first top block and a second top block; the first top block and the second top block The blocks are fixed against the first bearing and the second bearing respectively in opposite directions.

The main effect and advantage of the present invention is that through the special interlocking relationship between the bearing and the jacking block, the constant thrust between the jacking block and the corresponding bearing can be used to move the clearance of the bearing to On the non-active side, the inner ring and the outer ring of the bearing can be constantly pushed against the corresponding jacking blocks in sequence, so as to improve the practicability and progress of machining precision.

Description of drawings

Fig. 1 is a three-dimensional appearance view of the first preferred embodiment of the present invention.

Fig. 2 is a partially enlarged view of Fig. 1 of the present invention.

Fig. 3 is a top view of the first preferred embodiment of the present invention.

Fig. 4 is a partially enlarged view of Fig. 3 of the present invention.

Fig. 5 is a partial three-dimensional exploded view of the first preferred embodiment of the present invention.

Fig. 6 is a schematic diagram of the action of the first preferred embodiment of the present invention.

Fig. 7 is a perspective view of the second preferred embodiment of the present invention.

Fig. 8 is a partially enlarged view of Fig. 7 of the present invention.

Fig. 9 is a side view of the second preferred embodiment of the present invention.

Fig. 10 is a partially enlarged view of Fig. 9 of the present invention.

11-12 are schematic diagrams of the actions of the second preferred embodiment of the present invention.

detailed description

The disclosed preferred embodiments of the present invention mainly contain two: one is the first preferred embodiment shown in Figures 1 to 6 and the second preferred embodiment shown in Figures 7 to 12; wherein, the first preferred embodiment The implementation of the embodiment is to change the elevation angle of the mobile base 20 relative to the base 10; the implementation of the second preferred embodiment is to change the rotation angle of the mobile base 20A relative to the base 10A, which is related to the disclosure of the present invention Two preferred embodiments are described in detail respectively as follows.

As shown in Figures 1, 5, and 6, the first preferred embodiment of the precision sliding table with angle adjustment function of the present invention, but these embodiments are for illustration purposes only, and are not limited by this structure in patent applications The precision sliding table with angle adjustment function includes a base 10 installed on a support surface, a moving seat 20 movably installed on the base 10 and a linear drive installed on the base 10 The device 30 ; wherein the moving base 20 is provided with a reference plane 21 , and the linear drive device 30 is connected to the moving base 20 . When the linear driving device 30 pulls the movable base 20 reciprocatingly, it can drive the movable base 20 to reciprocate relative to the base 10 to change the horizontal elevation angle of the movable base 20 relative to the base 10 .

As shown in Figures 1 to 5, an arc-shaped chute 11 is formed on the base 10; a slide rail 22 extends on both sides of the bottom surface of the moving seat 20, and the two slide rails 22 are respectively slid on the chute 11 in a complementary manner. on both sides. A shaft 23 is horizontally extended from the side of the moving base 20, and the end of the shaft 23 is sequentially set and positioned with a first bearing 24 and a second bearing 25 from inside to outside.

The linear driving device 30 includes an axially reciprocating driving rod 31 and a driving seat 32 mounted on the free end of the driving rod 31 , wherein the axis of the driving rod 31 is perpendicular to the axis of the shaft 23 . A groove 33 is formed on a side of the driving base 32 corresponding to the moving base 20 , and the first bearing 24 and the second bearing 25 are accommodated in the groove 33 at the same time. Both sides of the groove 33 are respectively fixed with a first top block 34 and a second top block 35, the axis of the first top block 34, the second top block 35 and the shaft 23 are on the same plane, and the plane is parallel to Actuating axis of the driving rod 31. A first bearing rolling surface 342 and a second bearing rolling surface 351 are respectively formed on the ends of the first jacking block 34 and the second jacking block 35 . The first bearing rolling surface 342 and the second bearing rolling surface 351 are respectively reversely and constantly abutting against the first bearing 24 and the second bearing 25, wherein the free end of the first jacking block 34 is provided with a butting against the first bearing 24 The protruding block 341, the protruding block 341 can prevent the contact between the first top block 34 and the second bearing 25.

This first preferred embodiment is mainly used for changing the horizontal machining angle of the workpiece (not shown) placed on the reference plane 21 of the moving base 20 during precision machining. As shown in Figure 6, when the drive rod 31 of the linear drive device 30 extends forward (direction shown by arrow A in Figure 6), the projection 341 of the first jacking block 34 will support the first bearing 24 outwards, Make the sliding rail 22 of the moving seat 20 slide along the bottom surface of the chute 11 (direction shown by arrow B in Figure 6), and in the process of sliding, the front end of the moving seat 20 rises gradually, relatively, The rear end of the movable base 20 descends gradually, thereby changing the horizontal elevation angle between the reference plane 21 of the movable base 20 and the base 10 . During this process, the horizontal height of the shaft 23 is also gradually raised, and at the same time, the first bearing 24 rolls closely against the first bearing rolling surface 342 . In other words, the change in the horizontal height of the axis of the shaft 23 before and after the action is equal to the arc length of the first bearing 24 rolling along the end surface of the protruding block 341 . And when the driving rod 31 is retracted inwardly, it is replaced by the second jack block 35 to reversely push the second bearing 25, so that the moving seat 20 is reset or the direction of the horizontal elevation angle between the moving seat 20 reference plane 21 and the base 10 is changed; Likewise, the second bearing 25 rolls along the second bearing rolling surface 351 during this process.

Please refer to FIGS. 7 to 10, which are the second preferred embodiment of the present invention. In this preferred embodiment, a precision slide table with angle adjustment function is further installed between the base 10A and the moving seat 20A. The X-axis moving device 40 and a Y-axis moving device 50 , the moving base 20A is screwed on the Y-axis moving device 50 , and the linear driving device 30A is installed on the Y-axis moving device 50 laterally. A shaft 23A is radially extended on the moving seat 20A, and a first bearing 24A and a second bearing 25A are sequentially installed on the shaft 23A; in this preferred embodiment, the shaft 23A is an L-shaped structure It also includes a horizontal portion 231 and a vertical portion 232 , wherein the horizontal portion 231 is fixed on the reference plane 21A of the moving base 20A, and the first bearing 24A and the second bearing 25A are sequentially installed on the vertical portion 232 .

The linear driving device 30A includes a driving rod 31A and a driving base 32A mounted on the free end of the driving rod 31A, wherein the axis of the driving rod 31A is perpendicular to the axis of the vertical portion 232 . The driving seat 32A is formed with a groove 33A, and the first bearing 24A and the second bearing 25A are simultaneously accommodated in the groove 33A. A first top block 34A and a second top block 35A are respectively fixed on two sides of the groove 33A. A first bearing rolling surface 342A and a second bearing rolling surface 351A are respectively formed at the ends of the first jacking block 34A and the second jacking block 35A. The first rolling surface 342A of the bearing and the rolling surface 351A of the second bearing are respectively opposed to the first bearing 24A and the second bearing 25A.

As shown in Figures 8, 10, and 11, when the drive rod 31A of the linear drive device 30A extends forward (direction shown by arrow C in Figure 11), the first jacking block 34A will push the first bearing 24A outward, Further, the shaft 23A is used to drive the movable base 20A to rotate relative to the base 10A (direction shown by arrow D in FIG. 11 ), to adjust the rotation angle of the movable base 20A relative to the base 10A. During the rotation of the moving base 20A, the first bearing 24A rolls tightly against the first bearing rolling surface 342A of the first top block 34A. As shown in Figures 8, 10, and 12, when the driving rod 31A shrinks inwardly, the second jacking block 35A is used to reversely support the second bearing 25A, so that the moving seat 20A is reset or the reference plane of the moving seat 20A is changed. 21A and the direction of the rotation angle between the base 10A; similarly, the second bearing 25A rolls along the second bearing rolling surface 351A of the second top block 35A during this process. When the driving rod 31A shrinks inward (as shown by the arrow E in Figure 12), it is replaced by the second jacking block 35A to reversely push the second bearing 25A, so that the moving seat 20A is reset or the reference plane of the moving seat 20A is changed. The direction of rotation between 21A and the base 10A (direction shown by arrow F in FIG. 12 ); similarly, during this process, the second bearing 25A rolls along the second bearing rolling surface 351A of the second top block 35A.

The present invention is used to respectively push the first jacking block 34/34A and the second jacking block 35/35A of the first bearing 24/24A and the second bearing 25/25A. role of the gap. Traditionally, bearings have a set of inner rings and an outer ring that rolls relative to the inner ring, and a cage with balls or rollers is provided between the outer ring and the inner ring to improve the outer ring and the inner ring. Improve the concentricity of the inner ring and reduce the friction between the outer ring and the inner ring. Bearings are very precise assembly parts, and their dimensional error is usually required to be less than 1 μm. However, when used in the production line of mobile phone lenses where every second counts (high production capacity) and high precision is required, as long as the error of the bearing itself is due to the assembly process And when it is magnified, I am afraid that it will not be able to do the job. The principle of the present invention to eliminate backlash (eliminate the radial clearance between the inner ring and the outer ring of the bearing) is as follows: First, the distance from the rolling surface 342/342A of the first bearing of the present invention to the axis of the first bearing 24/24A is smaller than that of the first bearing The radius of 24/24A; and the distance from the rolling surface of the second bearing 351/351A to the axis of the second bearing 25/25A is smaller than the radius of the second bearing 25/25A. As mentioned above, the first bearing rolling surface 342/342A of the first jacking block 34/34A is constantly pushed against the first bearing 24/24A, so before the driving rod 31/31A is actuated, the first jacking block 34/34A is Concentrate the radial play of the first bearing 24/24A on the side that is not stacked in advance, so when the driving rod 31/31A is actuated and the first bearing 24/24A moves along the first top block 34/34A When the end face of the first bearing 24/24A is rolling, the inner ring, outer ring and first jacking block 34/34A of the first bearing 24/24A are in close contact with each other in sequence, so the moment the driving rod 31/31A moves, the shaft rod 23 /23A drives the moving seat 20/20A, so as to eliminate the radial clearance of the first bearing 24/24A and improve the processing density. The backlash elimination principle of the second bearing 25/25A is the same as that of the first bearing 24/24A.

Because the present invention repeatedly drives the moving seat 20/20A bidirectionally, the purpose of eliminating backlash cannot be achieved if only a single bearing is provided. The active forces will cancel each other out, and the clearance in the bearing will move at both ends instead, completely losing the function of eliminating backlash, and the top block in the non-actuating direction against the opposite direction will provide unnecessary friction to the rolling bearing , not only loses the effect of eliminating backlash, but also may cause slippage between the bearing and the actuating top block, not only does not improve the accuracy, but expands the angle adjustment error of the moving seat 20/20A.

Advantages of the present invention:

The precision sliding table with angle adjustment function of the present invention mainly uses the shape and interlocking relationship of the innovative and unique structures such as the bearing and the top block, so that the present invention can be used before the action compared with the structure proposed in [Background Technology]. The constant pushing action between the jacking block and the corresponding bearing moves the clearance of the bearing to the non-active side, and then the inner ring and outer ring of the bearing can be constantly pushed against the corresponding jacking block in order to improve machining The practicability and progress of precision.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (7)

1. the accurate slide unit of one kind tool angle regulation function, it is characterised in that including one for being installed in a supporting surface Base, a Mobile base being movably installed on base and one be installed in linear drive on base Dynamic device；A reference plane is wherein arranged on Mobile base, and linear actuating device is connected with Mobile base；Work as line Property drive device reciprocally tethered sliding seat when, Mobile base can be driven to make reciprocating type mobile relative to base, And change angle of the Mobile base relative to base；Wherein：

Mobile base is stretched provided with an axostylus axostyle, the end of axostylus axostyle be sequentially arranged from inside to outside be located a clutch shaft bearing with An and second bearing；

The free end of linear actuating device is equiped with a drive seat；Drive seat is formed with a groove, and first Bearing is placed in groove simultaneously with second bearing；The both sides of groove are installed with one first jacking block and one respectively Second jacking block；Reverse perseverance is resisted against clutch shaft bearing and second bearing respectively for first jacking block and the second jacking block.

2. the accurate slide unit of tool angle regulation function according to claim 1, it is characterised in that the first top A clutch shaft bearing rolling surface and a second bearing rolling surface are respectively formed with block and the second jacking block.

3. the accurate slide unit of tool angle regulation function according to claim 2, it is characterised in that first axle Rolling surface is held to the distance of clutch shaft bearing axis, less than the radius of clutch shaft bearing；And second bearing rolling surface is extremely The distance of second bearing axis, less than the radius of second bearing.

4. according to the accurate slide unit of the described tool angle regulation function of claim 1,2 or 3, its feature exists A projection for being resisted against clutch shaft bearing is provided with the free end end of the first jacking block, projection can avoid the first jacking block Contacted with second bearing；Clutch shaft bearing rolling surface is formed at the end face of projection.

5. the accurate slide unit of tool angle regulation function according to claim 4, it is characterised in that the first top The axis of block, the second jacking block and axostylus axostyle is in the same plane, and plane makees shaft line parallel to drive rod.

6. according to the accurate slide unit of the described tool angle regulation function of claim 1,2 or 3, its feature exists In the structure that axostylus axostyle is a L-shaped, and including a horizontal part and a vertical component effect；Horizontal part is fixed in movement In the reference plane of seat, and clutch shaft bearing is sequentially installed on vertical component effect with second bearing.

7. the accurate slide unit of tool angle regulation function according to claim 6, it is characterised in that base with An X-axis mobile device and a Y-axis mobile device are further equiped between Mobile base, and Mobile base rotation is set In in Y-axis mobile device, and linear actuating device is then laterally installed in Y-axis mobile device.