CN203641420U - Micro-adjustment mechanism - Google Patents

Abstract

The utility model relates to a micro-adjustment mechanism with a helical adjustment function. The micro-adjustment mechanism comprises a base and an adjustment mechanism, wherein the adjustment mechanism is arranged on the base; the base comprises a bottom plate, two edge supporting frames and a middle supporting frame; the two edge supporting frames and the middle supporting frame are arranged on the bottom plate; the adjustment mechanism comprises two screw rods, a slide rod and two slide blocks; the two screw rods are arranged between the middle supporting frame and the two edge supporting frames; screw threads are arranged on the surfaces of the main shaft bodies of the screw rods; threaded holes matched with the screw threads are formed in the slide blocks; the main shaft bodies of the screw rods penetrate through the threaded holes in the slide blocks to be connected with the slide blocks in a thread-fit manner; the slide blocks can slide left and right on the screw rods; screw grooves are formed in the slide rod; screw holes matched with the screw grooves are formed in the slide blocks; the slide blocks are fixed in the certain positions of the screw grooves of the slide rod through screws. The micro-adjustment mechanism provided by the utility model is simple and symmetric in structure, small in adjustment error, high in adjustment precision and convenient to mount and dismount, and can achieve a small-feed-quantity symmetric adjustment function.

Description

a fine-tuning mechanism

technical field

The utility model relates to a fine-tuning mechanism, in particular to a fine-tuning mechanism with screw adjustment.

Background technique

The screw fine-tuning mechanism is a very important mechanical adjustment mechanism. It is widely used in the connection of various mechanical rod parts. When one end of the rod body is fixed with the bracket and the sliding block on the rod needs to be adjusted in a small amount, the screw fine-tuning mechanism plays a role. important role. The currently widely used screw fine-tuning mechanism is mainly composed of a joint bracket, a slidable block and a rod body. Wherein, one end of the rod body is fixedly connected with the bracket, and the other end is threadedly connected with the slidable block. The position of the slidable block can be adjusted through the rotational movement of one end of the rod body.

In the prior art, the rod body and the bracket are fixedly connected and cannot be disassembled, which makes it inconvenient to replace the rod body when it is damaged, and it is difficult to control the error when the sliding block is adjusted on the rod body, and after the adjustment is in place, the sliding block is easily affected by external forces. The positioning effect will affect the adjustment accuracy, and the practicability is not good.

Utility model content

In order to solve the above-mentioned technical problems, the utility model provides a fine-tuning mechanism with simple and symmetrical structure, small adjustment error, high adjustment precision, convenient installation and disassembly, and can realize the symmetrical adjustment function of small feed.

In order to achieve the above purpose, the technical solution adopted by the utility model is a fine-tuning mechanism, including a base and an adjustment mechanism, the adjustment mechanism is arranged on the base, and the base includes a bottom plate, two edge support frames and a middle The support frame, the two edge support frames and the middle support frame are arranged on the bottom plate, and the adjustment mechanism includes two screw rods, a sliding rod and two sliding blocks, and the two screw rods are respectively arranged between the middle support frame and the two edge support frames , the two screw rods are threadedly connected with the two sliding blocks, and the sliding blocks can slide left and right on the screw rods. screw groove, the inner surface of the screw groove is provided with a threaded strip groove, and the sliding block is provided with a screw hole matching the screw groove, and the sliding block is fixed on the screw groove of the sliding rod by screws, thereby fixing the sliding block and The relative position of the slider.

Further, the two screw rods are stepped shaft screw rods, the middle support frame is provided with a first slot, and one end of the two screw rods is provided with a first shaft section matching the first slot, The two edge support frames are also respectively provided with second slots, and the other ends of the two screw rods are provided with second shaft sections matching the second slots.

Further, there is a main shaft between the first shaft section and the second shaft section of the two screw rods, and the diameter of the main shaft body is larger than the diameters of the first shaft section and the second shaft section.

Furthermore, the surfaces of the two screw spindle bodies are provided with threads, and the two sliding blocks are provided with threaded holes matching the threads, and the two screw spindle bodies pass through the threaded holes on the two sliding blocks, and are connected with the sliding blocks. Thread fit connection.

Further, a small retaining ring is sheathed on the first shaft section, and the small retaining ring is fixed to the first shaft section by screws, and the small retaining ring is used to limit the position of the first shaft section and the intermediate support frame.

Further, a large retaining ring is sheathed on the second shaft section, and the large retaining ring is fixed to the second shaft segment by screws, and the large retaining ring is used to limit the positions of the second shaft segment and the edge support frame.

Further, a dial is provided on the outer surface of the edge support frame.

Further, the sliding rod is fixedly connected to the edge support frame through bolts.

Further, the ports of the second shaft section of the two screw rods are provided with pointers, and the pointers are fixedly connected with the screw rods and rotate together with the screw rods.

Compared with the prior art, the utility model has the following advantages by adopting the above-mentioned technical scheme:

The utility model adopts a pair of symmetrically arranged screw rods, a sliding block is arranged on the screw rods, and a sliding rod is correspondingly arranged under the screw rods, a screw groove is arranged on the sliding rods, and a screw groove is arranged on the sliding block. The screw hole matched with the groove, the sliding block is fixed on a certain position of the screw groove of the sliding rod by a screw, thereby fixing the relative position of the sliding block and the sliding rod.

The utility model adopts that the middle support frame is provided with a card slot, and the two edge support frames are also respectively provided with a card slot, and the two screw rods are respectively connected with the middle support frame and the two edge support frames by being embedded in the card slots, which is convenient for disassembly and replacement of parts .

Because the utility model adopts a symmetrical screw rod and is provided with threads on the surface of the main shaft body of the screw rod, a threaded hole matched with the thread is opened on the sliding block. Connection, and then can realize the symmetrical adjustment function of small feed.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the utility model;

Fig. 2 is a top view of the embodiment of the utility model.

【Symbol Description】

1-pointer, 2-dial, 3-large retaining ring, 4-screw rod, 5-middle support frame, 6-small retaining ring, 7-sliding block, 8-edge support frame, 9-bottom plate, 10-sliding pole.

Detailed ways

The utility model is further described now in conjunction with accompanying drawing and specific embodiment.

As a specific embodiment, as shown in Figure 1 and Figure 2, a fine-tuning mechanism of the present invention includes a base and an adjustment mechanism, the adjustment mechanism is arranged on the base, and the base includes a bottom plate 9, Two edge bracing frames 8 and middle bracing frame 5, two edge bracing frames 8 and middle bracing frame 5 are arranged on the base plate 9, and described regulating mechanism comprises two screw mandrels 4, slide bar 10 and slide block 7, and described two screw mandrels 4 are respectively arranged between the middle support frame 5 and the two edge support frames 8, the surface of the main shaft body of the screw mandrel 4 is provided with threads, the sliding block 7 is provided with a threaded hole matched with the thread, the main shaft body of the screw mandrel 4 Through the threaded hole on the sliding block 7, it is threadedly connected with the sliding block 7. The sliding block 7 can slide left and right on the screw mandrel 4. The sliding rod 10 is arranged between the two edge support frames 8. The sliding rod 10 is fixedly connected with the two edge support frames 8 by bolts, and is located below the screw mandrel 4. A screw groove is uniformly arranged on the sliding rod 10, and the screw groove is a bar-shaped groove provided with threads on the inner surface. A screw hole matching the screw groove is provided, and the sliding block 7 is fixed on a certain position of the screw groove of the sliding rod 10 by a screw, thereby fixing the relative position of the sliding block 7 and the sliding rod 10 .

The screw rod 4 is a stepped shaft screw rod 4, the intermediate support frame 5 is provided with a first slot 51, and one end of the two screw rods 4 is provided with a first shaft section matching the first slot 51 41. The two edge support frames 8 are respectively provided with second slots 81, and the other ends of the two screw rods 4 are provided with second shaft sections 42 matching the second slots 81. The screw 4 is a stepped shaft screw 4, the main shaft body 43 is between the first shaft section 41 and the second shaft section 42, and the diameter of the main shaft body 43 is larger than that of the first shaft section 41 and the second shaft section 42. diameter. A small retaining ring 6 is sheathed on the first shaft segment, and the small retaining ring 6 is screwed to the first shaft segment 41 , and the small retaining ring 6 is used to limit the position of the first shaft segment 41 and the intermediate support frame 5 . The second shaft section 42 is also sleeved with a large retaining ring 3 , which is fixed to the second shaft segment 42 by screws, and the large retaining ring 3 is used to limit the position of the second shaft segment 42 and the edge support frame 8 . The relative position of the screw mandrel on the intermediate support frame 5 and the edge support frame 8 can be limited by the large retaining ring 3 and the small retaining ring 6 .

The outer surface of the edge support frame 8 is provided with a dial 2 . The dial 2 is fixed on the edge support frame 8 by screws. The port of the second shaft section of the screw rod 4 is provided with a pointer 1 , and the pointer 1 is fixedly connected with the screw rod 4 and rotates together with the screw rod 4 .

Working principle: When in use, turn the screw rod 4 slightly, and the rotation of the screw rod 4 will be transformed into the left and right sliding of the sliding block 7. Observing the pointer 1 and the dial 2 can precisely control the rotation angle of the screw rod 4, and realize the adjustment of the sliding plate 4. The fine adjustment of the sliding displacement, when the rotation angle of the left and right screw rods 4 is the same, the symmetry of the sliding block 7 can be maintained; after the adjustment is completed, tighten the screws on the sliding block 7 and the sliding rod 10 to fix the sliding block 7 to prevent other factors from causing sliding The position of the rod 10 changes again.

Although the utility model has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that, without departing from the spirit and scope of the utility model defined by the appended claims, changes in form and details may be made. Making various changes to the utility model is within the protection scope of the utility model. the

Claims (9)

1. a micro-adjusting mechanism, it is characterized in that: comprise pedestal and controlling mechanism, described controlling mechanism is arranged on pedestal, described pedestal comprises base plate, two edges supporting frame and intermediate support beam, two edges supporting frame and intermediate support beam are arranged on base plate, described controlling mechanism comprises two screw mandrels, sliding bar and two slide blockss, described two screw mandrels are separately positioned between intermediate support beam and two edges supporting frame, described two screw mandrels are connected with two slide blocks screw-thread fit, this slide blocks can horizontally slip on screw mandrel, described sliding bar is arranged between the supporting frame of two edges, be positioned at screw mandrel below, on this sliding bar, be evenly provided with screw channel, this screw channel internal surface is established threaded strip groove, this slide blocks is provided with the screw mating with this screw channel, slide blocks is fixed by screws on the screw channel of sliding bar, thereby the relative position of fixing slide blocks and sliding bar.

2. a kind of micro-adjusting mechanism according to claim 1, it is characterized in that: described two screw mandrels are multidiameter shaft screw mandrel, described intermediate support beam is provided with the first draw-in groove, described two screw mandrel one end are provided with the first shaft part matching with this first draw-in groove, described two edges supporting frame is also respectively equipped with the second draw-in groove, and the described two screw mandrel the other ends are provided with the second shaft part matching with this second draw-in groove.

3. a kind of micro-adjusting mechanism according to claim 2, is characterized in that: between the first shaft part of described two screw mandrels and the second shaft part, be main shaft, the diameter of this main shaft is greater than the diameter of the first shaft part and the second shaft part.

4. a kind of micro-adjusting mechanism according to claim 3, it is characterized in that: described two screw mandrel main shaft surfaces are provided with screw thread, on described two slide blockss, offer and the tapped hole of this screw-thread fit, two screw mandrel main shafts, through the tapped hole on two slide blockss, are connected with slide blocks screw-thread fit.

5. a kind of micro-adjusting mechanism according to claim 3, is characterized in that: on described the first shaft part, be also arranged with little back-up ring, this little back-up ring and the first shaft part screw are fixed, and little back-up ring is for limiting the position of the first shaft part and intermediate support beam.

6. a kind of micro-adjusting mechanism according to claim 3, is characterized in that: on described the second shaft part, be also arranged with large back-up ring, this large back-up ring and the second shaft part screw are fixed, and large back-up ring is for limiting the position of the second shaft part and edge supporting frame.

7. a kind of micro-adjusting mechanism according to claim 3, is characterized in that: the second shaft part port of described two screw mandrels is equipped with pointer, and described pointer is fixedly connected with screw mandrel, rotates with screw mandrel.

8. a kind of micro-adjusting mechanism according to claim 1, is characterized in that: described two edges supporting frame outer surface is equipped with dial.

9. a kind of micro-adjusting mechanism according to claim 1, is characterized in that: described sliding bar and two edges supporting frame are bolted to connection.

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