TW201518026A - Manual precision positioning lifter - Google Patents

Abstract

The utility model provides a micro-moving lifting platform mainly comprising a work table, a base and a transmission mechanism. The work table is arranged on the base; between the work table and the base is arranged a guiding unit enabling the work table to be lifted stably; the bottom of the work table is provided with a lifting slope block; and the transmission mechanism is arranged on the base and comprises a screw rod, a first sliding block, a second sliding block and a scale rotating wheel. The screw rod can drive the first and the second sliding blocks to synchronically get close to or get away from each other; the top parts of the first and the second sliding blocks are both provides with slopes contacting with the lifting slope block; and when the scale rotating wheel rotates, the screw rod also rotates, thereby enabling the first and the second sliding blocks to synchronically get close or get away from each other and thereby further accurately controlling ascending or descending positions of the work table.

Description

Micro motion lifting platform

This creation is a micro-motion lifting platform, especially an adjustment mechanism that provides a short distance in the vertical direction. When used in a drilling machine for machining operations, the adjustment of the height position is more precise.

Large-scale machine tools such as milling machines or CNC lathes are very easy to perform three-axis machining. It is also very easy to control precision, but the unit price is high and the volume is large, which is usually suitable for professional mechanical processing plants. In general factories, small drills are low-priced and easy to use, and at least one in most factories is convenient for drilling or other machining. For example, the small drilling machine can be combined with a set of cross table and dressing cutters for simple milling, which allows the factory to handle some simple workpieces. However, the drilling machine generally has no fine adjustment function for height adjustment. When height adjustment is required, the locking mechanism of the drilling platform is first loosened, and the locking mechanism is locked after moving the height of the platform, and usually the locking mechanism is released to adjust the height. The platform is also moved left and right, causing a shift in the machining position of the workpiece. Therefore, during the machining process, the drilling machine is rarely adjusted in height, and the machining accuracy in the vertical direction is difficult to control. For example, the drilling operation only requires a large distance movement in the vertical direction, and there is no fine adjustment function.

Furthermore, the clamping fixture or lifting platform suitable for the drilling machine must be designed to take into account the strong force or torque when drilling or milling, so the frame should be quite stable and not It will shake and maintain the processing quality, which also increases the difficulty of product design.

The main purpose of this creation is to provide a micro-motion lifting platform that can perform precise fine-tuning operations in the vertical direction, and has a stable structure that maintains good processing quality without any sloshing when subjected to gravity cutting or milling operations.

The second objective of this creation is to provide a micro-motion lifting platform with high precision and reasonable price. The main purpose is to adopt a compact but stable design, which can reduce the manufacturing cost, but it can meet the requirements of high precision and compete in the market. Force and industrial demand.

For the above purposes, the present invention mainly includes a workbench, a base, and a transmission mechanism, and the workbench is mounted on the base with a guiding unit between the two, so that the workbench smoothly rises and falls, the workbench The bottom portion has a lifting ramp, the lifting ramp has a first sliding surface and a second sliding surface with opposite slopes; the transmission mechanism comprises a screw, a first slider, a second slider, and a scale runner, the screw mounting At the base, one end extends to the outside to be connected to the scale wheel, and has two first threads and a second thread with opposite spiral directions, and the first slider is mounted on the first thread, having the first The inclined surface is in contact with the first sliding surface, and the second sliding block is mounted on the second thread, and the second inclined surface is in contact with the second sliding surface; the screw is also rotated when the scale rotating wheel is rotated, so that the first The first sliding surface and the second inclined surface are respectively slid on the first sliding surface and the second sliding surface to raise or lower the working table.

In this creation, the scale wheel is reset to zero and the lock design is designed. The scale runner is designed as a three-piece type. In this embodiment, the scale runner includes a manual runner, a scale wheel and a positioning. The ring is fixed to the rail fixing seat, and the inner shaft of the scale wheel is connected to the manual wheel and is freely rotatable. The locking wheel device has a locking knob and a braking block, and the locking block is pushed by the locking knob to push the braking block against the circular shaft of the manual rotating wheel, so that the manual rotating wheel and the scale wheel are integrated into one body, and the manual rotating wheel is rotated. Drive the scale wheel. In addition, in order to prevent the positional misalignment caused by accidentally touching the manual wheel during use, the tightening of the locking knob pushes the brake block against the round shaft of the manual wheel to achieve the braking effect.

The implementation of the present invention will be described in more detail below with reference to the drawings and component symbols, so that those skilled in the art can implement the present specification after studying the present specification.

1‧‧‧Micro-motion platform

10‧‧‧Workbench

11‧‧‧ platform

111‧‧‧ position keyhole

12‧‧‧Slide rails

13‧‧‧ Lifting ramp

131‧‧‧First sliding surface

132‧‧‧Second slip surface

14‧‧‧ screws

20‧‧‧ machine base

21‧‧‧Chassis

211‧‧‧ position keyhole

22‧‧‧Slide rail mount

221‧‧ ‧ guide slot

23‧‧‧Slide rail fixings

30‧‧‧Transmission mechanism

31‧‧‧ screw

311‧‧‧First thread

312‧‧‧second thread

32‧‧‧First slider

321‧‧‧Threaded hole

322‧‧‧First slope

33‧‧‧Second slider

331‧‧‧With screw holes

332‧‧‧second slope

34‧‧‧Scale wheel

341‧‧‧Manual runner

3411‧‧‧Tip

342‧‧‧Scale wheel

3421‧‧‧Tip hole

343‧‧‧ screws

5‧‧‧Drilling machine

51‧‧‧Workbench

6‧‧‧ cross workbench

35‧‧‧New control unit design

351‧‧‧Manual runner

3511‧‧‧First round shaft

3512‧‧‧Second round shaft

352‧‧‧Scale wheel

353‧‧‧ positioning ring

354‧‧‧ screws

355‧‧‧Lock knob

356‧‧‧ brake pads

357‧‧‧Lock knob

358‧‧‧ brake pads

The first picture is a perspective view of the creation; the second picture is a simplified exploded view of the creation; the third picture is an exploded view of the detailed structure of the creation; the fourth picture is an enlarged schematic view of the structure of the creation scale wheel; The schematic diagram of the actual use of the creation; the sixth figure is an enlarged schematic view of the structure of the newly added positioning scale runner.

The first picture shows the perspective of the creation. The creation micro-motion lifting platform 1 mainly comprises a worktable 10, a base 20, and a transmission mechanism 30. The worktable 10 is mounted on the base 20 with a guiding unit therebetween, so that the working table 10 can be smoothly During the lifting and lowering, the transmission mechanism 30 is mounted on the base 20, and the position of the table 10 is vertically raised and lowered by the principle of the inclined sliding of the double slider.

Next, a detailed description will be given of the structure of each component of the creation, as shown in the second and third figures: the table 10 includes a platform 11, a plurality of slide rails 12, and a lifting ramp 13. The platform 11 is provided with a plurality of position lock holes 111 for other workpieces or implements to be locked thereon. In this embodiment, the number of the slide rails 12 is two on both sides of the bottom of the platform 11. The lifting ramp 13 is mounted at an intermediate position of the bottom of the platform 11 and has a first sliding surface 131 and a second sliding surface 132 opposite in slope. The two are respectively located on opposite sides of the lifting ramp 13 in the embodiment. The absolute value is 1/2, but not limited to this. The cross-section of the slide rail 12 is rectangular, and the purpose is to have a large contact area, which is relatively stable when rising or falling. The components of the table 10 are locked together by a plurality of screws 14.

The base 20 includes a chassis 21, a plurality of rail fixing seats 22, and a plurality of rail fixing members 23. The chassis 21 is distributed on the position lock hole 211 for locking to other machine tools or to be installed. The rail fixing seat 22 is mounted on both sides of the chassis 21, and has a guiding slot 221 in the longitudinal direction thereof, and has a U-shaped cross section. The guiding slot 221 is for sliding the sliding rail 12 therein. The rail fixing member 23 is fixed to the side wall of the sliding rail fixing seat 23 in a vertical direction, partially shielding the opening of the guiding slot 221, thereby preventing the sliding rail 12 from being detached from the sliding rail fixing seat during assembly. The guide groove 221 of 22 can increase the stability of the lift.

In this embodiment, the table 10 is mounted on the base 20 with a guiding unit therebetween to smoothly lift the table 10, wherein the guiding unit refers to the sliding rail 12 of the table 10. With the rail mount 22 of the base 20 and the rail mount 23, this is only one embodiment of the present invention and is not limited to the use of such a mechanism.

The transmission mechanism 30 includes a screw 31, a first slider 32, a second slider 33, and a scale runner 34. The screw 31 is mounted between the two rail fixing seats 22 of the base 20 . One end will extend to the outside to be in contact with the scale wheel 34, and the screw 31 will rotate synchronously when the scale wheel 34 is rotated. The screw 31 has two first threads 311 and a second thread 312 having opposite spiral directions, for example, one is a clockwise spiral direction, and the other is a reverse needle spiral direction. The first slider 32 has an internally threaded hole 321 and a top portion having a first slope 322. The second slider 33 has an internally threaded hole 331 and a second slope 332 at the top. The spiral direction of the inner screw hole 321 and the inner screw hole 3311 is opposite, and the slopes of the first slope surface 321 and the second slope surface 322 are also opposite to each other. When assembled, the first slider 32 is mounted on the first thread 311, the first slope 322 is in contact with the first sliding surface 131, and the second slider 33 is mounted on the second thread 312, the second The slope 332 is in contact with the second sliding surface 132. In this way, when the scale wheel 34 is rotated, the screw 31 rotates synchronously, so that the first slider 32 and the second slider 33 are synchronously close to each other or away from each other in the opposite direction, and the first slope 322 is utilized. The second inclined surface 332 slides on the first sliding surface 131 and the second sliding surface 132 to raise or lower the platform 11 of the table 10.

In this example, each time the scale wheel 34 rotates, the first slider 32 and the second slider 33 each move by a pitch, and the amount of the movable tooth distance is scored through the scale runner 34, and then cooperates with the first The slopes of the inclined surface 322 and the second inclined surface 332, the first sliding surface 131, and the second sliding surface 132 can accurately increase the distance of lifting.

In addition, the transmission mechanism 30 further includes a guiding rod 35 mounted between the two rail fixing seats 22 of the base 20 and extending through the first slider 32 and the second slider 33. Controls the parallelism of the movement of the two sliders.

Furthermore, in order to prevent the positional misalignment caused by the accidental touch of the scale runner 34 during the use of the height position adjustment, the present design has another design. As shown in the third and fourth figures, the author defines the scale wheel 34 as a two-piece type. In this embodiment, the scale is turned. The wheel 34 includes a manual wheel 341 and a scale wheel 342. The scale wheel 342 is fixed to the screw 31 by a screw 343. The manual wheel 341 is axially connected to the screw 31. The inner side wall of the manual wheel 341 has a spigot 3411, and the side wall of the scale wheel 342 has a spigot hole 3421. When the fine adjustment is performed, the insertion end 3411 of the manual rotation wheel 341 must be inserted into the insertion hole 3421 of the scale wheel 342. When the manual rotation wheel 341 is rotated, the scale wheel 342 is rotated, and the screw 31 will be rotated. Rotate synchronously. Otherwise, the manual reel 341 is rotated separately, and the screw 31 is not rotated.

As shown in the fifth figure, it is a schematic diagram of the actual use of the creation. In use, the creation of the micro-motion lifting platform 1 is mounted on a table 51 of a drilling machine 5, on which a cross table 6 can be mounted. The cross table 6 can adjust the position of the XY plane, and the micro-motion table 1 can provide the adjustment of the vertical direction (Z-axis) position, so that the original two-axis control is upgraded to the three-axis control, for such a machine tool Processing accuracy and quality can be improved simultaneously.

The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present embodiments. The equivalent changes and modifications made by the scope of the patent application for this creation are covered by the scope of the patent.

In order to facilitate the use of the height position adjustment, the scale can be zeroed. The scale wheel 35 is designed as a three-piece design. In the embodiment, the scale wheel 35 includes a manual wheel 351, a moment. The wheel 352 and a positioning ring 353 are fixed to the rail fixing seat 22 . The inner hole 3521 of the scale wheel 352 is axially connected to the first circular shaft 3511 of the manual runner 351 and is freely rotatable. The locking wheel 352 is provided with a locking knob 355 and a braking block 356. When the locking knob 355 is screwed in the clockwise direction, the braking block 356 is pushed against the circular shaft 3521 of the manual rotating wheel 352 to achieve the braking effect. The height can be zeroed after adjustment at any height position. The manual runner 351 is fixed to the screw 31 by a screw 354. In addition, to prevent the use process After the height position is adjusted, the position of the manual rotation wheel 351 is misaligned, and a locking knob 357 and a brake block 358 are arranged on the positioning ring 353. When the locking knob 357 is clockwise When tightened, the brake block 358 is pushed against the second circular shaft 3512 of the manual runner 351 to achieve the brake locking effect.

1‧‧‧Micro-motion platform

10‧‧‧Workbench

11‧‧‧ platform

111‧‧‧ position keyhole

12‧‧‧Slide rails

13‧‧‧ Lifting ramp

131‧‧‧First sliding surface

132‧‧‧Second slip surface

14‧‧‧ screws

20‧‧‧ machine base

21‧‧‧Chassis

211‧‧‧ position keyhole

22‧‧‧Slide rail mount

221‧‧ ‧ guide slot

23‧‧‧Slide rail fixings

30‧‧‧Transmission mechanism

31‧‧‧ screw

311‧‧‧First thread

312‧‧‧second thread

32‧‧‧First slider

321‧‧‧Threaded hole

322‧‧‧First slope

33‧‧‧Second slider

331‧‧‧With screw holes

332‧‧‧second slope

34‧‧‧Scale wheel

341‧‧‧Manual runner

3411‧‧‧Tip

342‧‧‧Scale wheel

3421‧‧‧Tip hole

343‧‧‧ screws

Claims (5)

A micro-motion lifting platform mainly comprises a working platform, a machine base, and a transmission mechanism, wherein: a guiding unit is arranged between the working table and the machine base, so that the working table can be smoothly lifted and lowered, and the bottom of the working platform has a lifting slope a lifting block having a first sliding surface and a second sliding surface having opposite slopes; the transmission mechanism includes a screw, a first slider, a second slider, and a scale runner, the screw is mounted at the base a first end extending to the outside to be connected to the scale rotating wheel, the screw having two first spiral threads and a second thread opposite to each other, the first sliding block being mounted on the first thread, having a first inclined surface and the The first sliding surface is in contact with the second sliding portion, and the second sliding surface is in contact with the second sliding surface; when the rotating rotating wheel is rotated, the screw rotates synchronously to make the first sliding block and the first sliding block The second sliders are synchronously approached or away from each other in the opposite direction, and the first slope and the second slope are respectively slid in synchronization with the first sliding surface and the second sliding surface, so that the table is raised or lowered. The micro-motion lifting platform according to claim 1, wherein the guiding unit comprises a plurality of sliding rails, a plurality of sliding rail fixing seats, and a plurality of sliding rail fixing pieces, wherein the sliding rails are located on two sides of the working platform, and the sliding rails are fixed. The seat is located at two sides of the base, and the slide rail has a guide groove, and the slide rail is installed in the guide groove. The slide rail is mounted on the side wall of the slide rail seat to partially cover the guide groove. The opening is such that the slide rail only rises or falls within the guide groove. The micro-motion lifting platform according to claim 1, wherein the transmission mechanism further comprises a guiding rod installed at the base and extending through the first sliding block and the second sliding block. The fine motion lifting platform according to claim 1, wherein the scale rotating wheel comprises a manual rotating wheel and a scale wheel, wherein the scale wheel is fixed to the screw, and the manual wheel is axially connected to one end of the screw, The inner side wall of the manual wheel has a spigot, and the opposite side of the scale wheel has a spigot hole. When the insertion end of the manual wheel is inserted into the spigot hole, the scale wheel is rotated when the manual wheel is rotated. Will rotate synchronously. A scale runner zeroing and locking design includes a manual runner and a scale wheel and a positioning ring, the positioning ring is fixed at the rail fixing seat, the scale wheel is connected to the manual runner, and By rotation, the manual wheel is fixed at the screw and the shaft is connected in the positioning ring. The scale wheel device has a locking knob and a brake block, and when the locking knob is tightened, the brake block is pushed to withstand the effect of the manual wheel to achieve braking. The locking ring device has a locking knob and a braking block. When the locking knob is tightened, the braking block is pushed against the round shaft of the manual wheel to achieve the brake locking effect.