CN203509768U - Novel precise index plate - Google Patents

Abstract

The utility model discloses a novel precise index plate, relates to the field of metal cutting machine tools and aims at providing a novel precise index plate which is accurate in dimensionality and high in index precision. According to the technical scheme, the novel precise index plate comprises a fixation plate, a moving plate, a drive worm and a driven worm. The moving plate is arranged on the fixation plate in a sleeved mode. The moving plate is provided with multiple teeth. The drive worm and the driven worm are located on the two sides of the moving plate and meshed with teeth of the moving plate. One end of the drive worm is connected with a motor which is connected with a controller. The moving plate and the fixation plate are provided with scale marks. The number of the scale marks on the moving plate is larger than that of the scale marks on the fixation plate. The novel precise index plate has the advantages that the two worms are arranged on the two sides of the moving plate to be meshed with the moving plate, influences of the gaps among the teeth on index are eliminated, the index precision is high, the motor is used for directly driving the drive worm to rotate, the index efficiency is high, and the angle of the index is calculated by reading the position of the zero scale mark on the moving plate and the positions of the coincided scale marks on the moving plate and the fixation plate.

Description

Novel microdial

Technical field

The utility model relates to Metal Cutting Machine Tool field, is specifically related to the index dial in a kind of lathe.

Background technology

In mechanical processing process, often need on the circumference of workpiece, process some grooves or decorative pattern, and the groove on workpiece or the position relationship between decorative pattern are had to quite strict requirement, therefore for guaranteeing machining accuracy, need all require to grasp very accurately to the each angle of rotating of workpiece, indexing accuracy is high, and the precision of processing is also just high so, thereby the indexing accuracy of index dial affects the precision of machining to a great extent.Existing index dial is to realize calibration by being positioned on index dial circumference tiny intensive tooth or circular hole mostly, and corresponding scale is not set, thereby no matter be in mechanical processing process, or in the field research process of lathe, all can not learn intuitively the number of degrees that index dial turns over; And existing index dial adopts dividing gear to detect the angle that index dial or changing of workpieces are crossed mostly, owing to there being inter-lobe clearance, thereby in precision, can not get good control.

Summary of the invention

The purpose of this utility model is to provide the novel microdial that a kind of number of degrees are accurate, indexing accuracy is high, by the graduation mark on index dial, can learn the number of degrees that index dial turns over, and indexing accuracy is high.

For solving the problems of the technologies described above, the utility model adopts following technical scheme:

A kind of novel microdial, comprise fixed disk, be set in the movable disk on fixed disk, movable disk is provided with some teeth, it is characterized in that: also comprise be positioned at movable disk both sides and with active worm screw, the driven worm screw of the tooth engagement of movable disk, initiatively worm screw one end is connected with motor, motor is connected with controller, in fixed disk and movable disk, be equipped with graduation mark, the graduation mark line number in movable disk is more than the graduation mark line number on fixed disk.

Further, motor is servomotor.

Further, in fixed disk and movable disk, all indicate " 0 " graduation mark.

The beneficial effects of the utility model are:

1, movable disk both sides adopt two worm screws and its engagement, have eliminated the impact of inter-lobe clearance on calibration, and indexing accuracy is high; By motor direct-drive active worm screw, rotate, calibration efficiency is high; By reading the position of the graduation mark overlapping with fixed disk high scale line on " 0 " graduation mark position and movable disk in movable disk, calculate the angle of calibration, the number of degrees are accurate.

2, adopt initiatively worm screw rotation of driven by servomotor, when driving worm screw, can compare, by relatively making further adjustment, guarantee indexing accuracy, thereby indexing accuracy is high.

3, by the graduation mark overlapping with fixed disk high scale line in the position relationship between fixed disk and " 0 " graduation mark in movable disk and movable disk, can calculate the angle that movable disk turns over, thereby calculate the number of degrees of calibration, facilitate reading, the number of degrees are accurate.

Accompanying drawing explanation

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

Fig. 2 is position view when movable disk is not rotated in the utility model;

Fig. 3 is that in the utility model, movable disk turns over the position view after 160 °;

Fig. 4 is that in the utility model, movable disk turns over the position view after 110 °;

Wherein Reference numeral is: 1-fixed disk, 2-movable disk, 3-active worm screw, 4-driven worm screw, 5-motor, 6-controller, 7-graduation mark, 8-" 0 " graduation mark.

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is described further:

As shown in Figure 1, a kind of novel microdial, comprises fixed disk 1, movable disk 2, active worm screw 3, movable worm screw 4 motors 5 and controller 6.Movable disk 2 is cirque structure, and movable disk 2 is set on fixed disk 1, and rotates around the axis of fixed disk 1, and movable disk 2 is provided with some teeth.Movable disk 2 both sides are provided with initiatively worm screw 3 and driven worm screw 4, this active worm screw 3 and driven worm screw 4 mesh with the tooth of movable disk 2 both sides respectively, initiatively worm screw 3 rotarily drives movable disk 2 rotations, movable disk 2 rotarily drives driven worm screw 4 rotations, why two worm screws are set, and its object is to eliminate the impact of inter-lobe clearance on indexing accuracy.Initiatively worm screw 3 one end are connected with motor 5, and motor 5 is connected with controller 6, and controller 6 is controlled motor 5 and rotated, and motor 5 drives initiatively worm screw 3 to rotate corresponding angle, thereby completes calibration.Wherein motor can be selected stepper motor, also can select servomotor, the preferred servomotor of the utility model, and reason is to do further adjustment after servomotor can compare in process again, limit processing, limit comparison, limit is adjusted.

As shown in Figure 2, in fixed disk 1 and movable disk 2, be equipped with corresponding graduation mark 7, fixed disk 1 is provided with 32 graduation marks 7, and the angle between adjacent two graduation marks 7 is 11.25 °, movable disk 2 is provided with 36 graduation marks, and the angle between adjacent two graduation marks 7 is 10 °.In fixed disk 1 and movable disk 2, be equipped with " 0 " graduation mark 8, during calibration, point-blank, now, the angle between " 1 " graduation mark on fixed disk 1 and " 1 " graduation mark in movable disk 2 is not 1.25 ° to two " 0 " graduation marks.

As shown in Figure 3, movable disk 2 turns over after certain angle, now " 0 " graduation mark 8 in movable disk 2 is positioned between " 14 " graduation mark and " 15 " graduation mark of fixed disk 1, point-blank, so the angle that movable disk 2 turns over is for " 2 " graduation mark of movable disk 2 and a certain graduation mark on fixed disk 1:

, so the angle that movable disk 2 turns over is 160 °.

As shown in Figure 4, movable disk 2 turns over after certain angle, now " 0 " graduation mark 8 of movable disk 2 is positioned between " 9 " graduation mark and " 10 " graduation mark of fixed disk 1, point-blank, so the angle that movable disk 2 turns over is for " 7 " graduation mark of movable disk 2 and a certain graduation mark on fixed disk 1:

, so the angle that movable disk 2 turns over is 110 °.

Certainly, after installing workpiece, on fixed disk, " 0 " graduation mark 8 of 1 also necessarily overlaps with " 0 " graduation mark 8 in movable disk 2, and therefore, the angle that index dial rotates is in such cases the difference that index dial rotates twice numerical value in front and back.

Claims (3)

1. a novel microdial, comprise fixed disk (1), be set in the movable disk (2) on fixed disk (1), movable disk (2) is provided with some teeth, it is characterized in that: also comprise be positioned at movable disk (2) both sides and with the active worm screw (3) of the tooth engagement of movable disk (2), driven worm screw (4), initiatively worm screw (3) one end is connected with motor (5), motor (5) is connected with controller (6), in fixed disk (1) and movable disk (2), be equipped with graduation mark (7), graduation mark (7) line number in movable disk (2) is more than graduation mark (7) the line number on fixed disk (1).

2. novel microdial as claimed in claim 1, is characterized in that: motor (5) is servomotor.

3. novel microdial as claimed in claim 1, is characterized in that: in fixed disk (1) and movable disk (2), all indicate " 0 " graduation mark (8).

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