CN201891812U - Transmission device used for accurate positioning - Google Patents

Abstract

The embodiment of the utility model provides a transmission device for precise positioning, the transmission device at least includes a toothed chain and a timing belt, wherein the toothed chain is composed of a toothed chain link, and the bottom of the toothed chain link has teeth shape; the synchronous belt meshes with the toothed chain, and the precise transmission between the synchronous belt and the toothed chain is realized through the toothed meshing. Through the transmission device, the positioning accuracy of the transmission can be guaranteed, so that it can be used in processing equipment and automatic production lines that require precise positioning of workpieces, and the automation level of the production line can be improved.

Description

A transmission device for precise positioning

technical field

The invention relates to the field of numerical control machine tools and automatic production equipment, in particular to a transmission device for precise positioning.

Background technique

At present, my country's CNC machinery industry is developing rapidly. Although there are many types of equipment produced, they are all low-to-medium level equipment. Each equipment works independently, and manual loading and unloading is required when working. To achieve the process requirements of fully automatic continuous production.

Existing CNC machine tools are generally composed of main transmission system, feed transmission system, control system and other accessories. Before processing, CNC machine tools need to clamp and position the workpiece. This process requires conveying devices, fixtures and positioning devices. Most CNC machine tools generally use manual handling and clamping, a few CNC machine tools use special conveying systems and manipulators to complete clamping and positioning, and general conveying systems use chain transmission, and the feed system uses ball screw drive.

In the above-mentioned existing technical solutions, since special fixtures or negative pressure are required to clamp and position the workpiece, the conveying transmission mechanism is generally loaded and unloaded manually or by a special robot, and the conveying mechanism and the feeding mechanism are separated, so it is difficult to Realizing automatic feeding and precise positioning is not conducive to improving the automation level of the production line.

Contents of the invention

The embodiment of the present invention provides a precise positioning transmission device, which can ensure the positioning accuracy of the transmission, so as to be used in processing equipment and automatic production lines requiring precise positioning of workpieces, and improve the automation level of the production line.

An embodiment of the present invention provides a precise positioning transmission device, the transmission device at least includes a toothed chain and a timing belt, wherein:

The toothed chain is composed of a toothed chain link, and the bottom of the toothed chain link has a tooth shape;

The synchronous belt meshes with the toothed chain, and the precise transmission between the synchronous belt and the toothed chain is realized through the meshing of the teeth.

The toothed chain is composed of a plurality of toothed chain links, and each toothed chain link has the same structure;

There are two sets of vertically mounted bearings on this toothed link, said bearings rolling on rails;

Each toothed chain link is connected with the front and rear chain links by a shaft pin roller, and the surface of the toothed chain link is equipped with a polymer material friction sheet.

The timing belt is tensioned by four flat pulleys and a toothed pulley matching the tooth profile of the timing belt, wherein:

The flat pulley and the toothed pulley make the synchronous belt surround in a figure shape, so that the synchronous belt wraps around the toothed pulley and meshes with it.

The track is composed of a linear guide rail and a semicircular guide rail;

After the guide rail is fixed, an elliptical track is formed, and the bearing on the toothed chain link rolls on the elliptical track.

The position of the guide rail on the support can be adjusted, and the toothed chain is tensioned by adjusting the relative position of the guide rail.

It can be seen from the technical solution provided above that the transmission device at least includes a toothed chain and a synchronous belt, wherein the toothed chain is composed of a toothed chain link, and the toothed chain link has a tooth shape at the bottom; The synchronous belt meshes with the toothed chain, and the precise transmission between the synchronous belt and the toothed chain is realized through the toothed meshing. Through the transmission device, the positioning accuracy of the transmission can be guaranteed, so that it can be used in processing equipment and automatic production lines that require precise positioning of workpieces, and the automation level of the production line can be improved.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of a precise positioning transmission device provided by an embodiment of the present invention;

Fig. 2 is a structural schematic diagram of a synchronous belt of a transmission device with precise positioning provided by an embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a toothed chain link of a transmission device with precise positioning provided by an embodiment of the present invention.

Detailed ways

The embodiment of the present invention provides a precise positioning transmission device, which can ensure the positioning accuracy of the transmission, so as to be used in processing equipment and automatic production lines requiring precise positioning of workpieces, and improve the automation level of the production line.

In order to better describe the embodiment of the present invention, the specific embodiment of the present invention will now be described in conjunction with the accompanying drawings. Figure 1 is a schematic diagram of the overall structure of the precise positioning transmission device provided by the embodiment of the present invention. The transmission device at least Consists of a toothed chain and a timing belt, where:

The toothed chain is composed of a toothed chain link, and the bottom of the toothed chain link has a tooth shape; the synchronous belt meshes with the toothed chain, and through the meshing of the tooth shape, the synchronous belt and the tooth shape are realized. Precise transmission between chains.

The toothed chain is composed of a plurality of toothed chain links, and each toothed chain link has the same structure; there are two sets of vertically installed bearings on the toothed chain link, and the bearings roll on the guideway; each toothed chain The joints are connected with the front and rear chain links by pin rollers, and the surface of the toothed chain links is equipped with polymer material friction plates to increase the friction to the workpiece.

The structure of the transmission device will be described in detail below in conjunction with the accompanying drawings. Figure 1 is the overall structure diagram of the transmission device, and Figure 2 is a schematic structural diagram of the synchronous belt; Figure 3 is a schematic structural diagram of the toothed chain link of the transmission device, as shown in the figure :

The whole device 1 is composed of a conveyor chain 2, a synchronous belt 3, a driving wheel 4, driven wheels (5, 6, 7, 8) and a supporting frame 9; the conveyor chain 2 is formed by connecting toothed chain links 10 in series; The chain link 10 is composed of a friction plate 11, a side guide wheel 12, a support wheel 13 and a sprocket segment 14; the friction plate 11 is installed on the sprocket segment 14, and the friction plate 11 can support the workpiece and generate friction to drive the workpiece to move; the chain The side guide wheels 12 are installed on the two ribs of the tooth joint 14, so as to ensure that the conveying chain does not run off when running; the support wheel 13 moves on the track 9 supporting the frame; Tension the conveyor chain 2. There are teeth below the sprocket pitch 14, which can engage with the synchronous belt 3. The synchronous belt is tensioned through four flat pulleys and a toothed pulley matching the tooth shape of the synchronous belt, wherein the flat pulley and the toothed pulley make the synchronous belt surround in a figure shape, so that the synchronous belt wraps around the toothed belt wheel and engage with it.

The above-mentioned whole synchronous belt 3 surrounds the driving wheel 4 and the driven wheels (5, 6, 7, 8); the driving wheel 4 is a toothed pulley matched with the synchronous belt 3; the servo motor drives the driving wheel 4 to rotate, and the driving wheel 4 meshes with the synchronous belt 3; the driven wheels (5, 6, 7, 8) support the synchronous belt 3 and tension the synchronous belt 3 at the same time, so the synchronous belt 3 can also rotate synchronously; Drive conveyor chain 2 to run on track 9.

The track 9 is composed of a linear guide rail and a semicircular guide rail; the guide rail is elliptical after being fixed, and the bearing on the toothed chain link rolls on the elliptical track 9 . And the position of the guide rail on the support can be adjusted, and the toothed chain is tensioned by adjusting the relative position of the guide rail.

It can be known from the structure described above that this embodiment relies on synchronous belt and toothed chain transmission to ensure the positioning accuracy of the transmission, so the device of the utility model can be used in processing equipment and automatic production lines that require precise positioning of workpieces.

In addition, optionally, two sprockets can also be used to directly drive the conveying chain 2, and each sprocket is driven by a servo motor separately, and the rotation of the two servo motors is controlled synchronously to make the two sprockets rotate synchronously, so that precise positioning and Feed movement.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present invention can easily think of changes or Replacement 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 (5)

1. a pinpoint transmission device is characterized in that, described transmission device comprises a profile of tooth chain and a synchronous band at least, wherein:

Described profile of tooth chain is made of the profile of tooth chain link, and profile of tooth is arranged at this profile of tooth chain link bottom;

Described synchronous band and described profile of tooth chain engages by the engagement of profile of tooth, realize the accurate transmission between described synchronous band and the described profile of tooth chain.

2. device as claimed in claim 1 is characterized in that, described profile of tooth chain is made up of a plurality of profile of tooth chain links, and each profile of tooth link configuration is identical;

Two groups of vertically arranged bearings are arranged on this profile of tooth chain link, and described bearing rolls in orbit;

Each profile of tooth chain link all links to each other with the chain link of pivot pin roller and front and back, and described profile of tooth chain link mounted on surface has the macromolecular material friction plate.

3. device as claimed in claim 1 is characterized in that, the profile of tooth belt wheel tensioning that described synchronous band mates by four flat tyre wheels and and band profile of tooth synchronously, wherein:

Described flat tyre wheel and profile of tooth belt wheel make this synchronously band be " several " font and center on, make synchronous band around profile of tooth belt wheel and and its engagement.

4. device as claimed in claim 2 is characterized in that, described track is made up of linear rail and semicircle guide rail;

An elliptical orbit, the rolling-operation on this elliptical orbit of the bearing on the described profile of tooth chain link are formed in the fixing back of this guide rail.

5. device as claimed in claim 4 is characterized in that,

The position-adjustable of described guide rail on support come the described profile of tooth chain of tensioning by the relative position of regulating this guide rail.

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