CN210799643U

CN210799643U - Novel electric spindle encoder fixed disk mounting structure

Info

Publication number: CN210799643U
Application number: CN201920369845.6U
Authority: CN
Inventors: 卢帅; 黄文�; 罗聚民
Original assignee: SAIC GM Wuling Automobile Co Ltd
Current assignee: SAIC GM Wuling Automobile Co Ltd
Priority date: 2019-03-22
Filing date: 2019-03-22
Publication date: 2020-06-19
Anticipated expiration: 2029-03-22

Abstract

The utility model relates to the field of mechanical equipment, a novel electricity main shaft encoder fixed disk mounting structure is provided, its characterized in that: and a thread is added at one end of the cylindrical guide pin, and an inner hexagonal hole is added at the other end of the cylindrical guide pin. The utility model discloses profitable effect is: the novel guide pin is installed through threads instead of the original interference fit mode of a straight-through blind hole, the locking mode is improved, and the vibration and impact resistance of the guide pin is improved.

Description

Novel electric spindle encoder fixed disk mounting structure

Technical Field

The utility model relates to the field of machinary, especially a novel electricity main shaft encoder fixed disk mounting structure.

Background

At present, an electric spindle is commonly used as a main cutting part for CNC high-precision machine tools, and due to the high requirement on the internal precision of the electric spindle, the electric spindle cannot normally cut and process workpieces as long as the electric spindle breaks down. The inner encoder of the electric spindle is arranged on the encoder fixing disc, and the fixing disc needs to move axially and is subjected to force in one axial rotation direction in the working process. In order to ensure that the encoder does not deviate, a guide pin is additionally arranged on the fixed disc of the encoder for guiding and limiting. The guide pin that uses at present is directly fixed on the main shaft base through direct blind hole interference fit's installation, and the encoder fixed disk is axial slip along the axis direction of guide pin, and the guide pin still will restrict the encoder fixed disk and make circular motion around the axle center simultaneously.

1) The guide pin with the structure penetrates through the encoder fixing disc and is in interference fit with the through blind hole in the main shaft shell body through the guide pin, the guide pin hole base of the fixing disc is easy to abrade and enlarge, and the guide pin is easy to loosen and fall out in the shaking and back-and-forth impact process of a long-term machine tool.

2) The guide pin is not firm and is easy to break.

SUMMERY OF THE UTILITY MODEL

In order to solve the prior technical problem, the utility model provides a novel guide pin increases the screw thread in the one end of cylindrical guide pin, and hexagonal hole in the other end increases.

And a stepped abutting surface is added at the joint of the cylindrical surface and the threaded surface of the guide pin.

The utility model provides a novel electricity main shaft encoder fixed disk mounting structure, includes: above uide pin, fixed disk, casing, there is casing uide pin fixed orifices above the casing, there is the screw thread casing uide pin fixed orifices inboard, screw thread and the screw thread adaptation above the uide pin correspond with it, and there is fixed disk uide pin mating holes in the position that corresponds on the fixed disk, fixed disk uide pin mating holes is counter sink, size and shape and uide pin adaptation.

Compared with the prior art, the utility model has the advantages that increase the screw thread at one end of original cylindrical guide pin, hexagonal hole in the other end increase, original straight-through blind hole changes the screw hole into, by the screw thread locking mode, replaces original cylindrical guide pin and straight-through blind hole interference fit mode installation, has improved the locking mode, has improved the guide pin and has improved the anti-vibration impact ability.

Drawings

Fig. 1 is a perspective view of the guide pin of the present invention.

Fig. 2 is a sectional view of the guide pin of the present invention.

Fig. 3 is a front view of the guide pin of the present invention.

Fig. 4 is a guide pin mounting diagram of a fixed disk of a conventional electric spindle encoder.

Fig. 5 is a conventional guide pin structure diagram.

Fig. 6 is a mounting diagram of a guide pin of a fixed disc of the novel electric spindle encoder.

Fig. 7 is a partially enlarged view of a guide pin installation diagram of a fixed disc of the novel electric spindle encoder.

Part number: 1 existing guide pin fixing holes.

2 guide pin mating holes on existing fixed disks.

3 existing guide pins.

4, a shell.

And 5, fixing the disc.

6 novel guide pin fixing holes.

7 novel guide pin matching holes on the fixed disc.

8 novel guide pin.

9 novel shell.

10 novel fixed disk.

Detailed Description

The present invention will be further described with reference to the following description and embodiments.

As shown in fig. 1, it is a three-dimensional structure diagram of the guide pin of the present invention.

And a thread is added at one end of the cylindrical guide pin, and an inner hexagonal hole is added at the other end of the cylindrical guide pin. A stepped abutting surface is added at the joint of the cylindrical surface and the threaded surface of the guide pin.

As shown in fig. 2, the cross-sectional view of the guide pin of the present invention is shown.

As shown in fig. 3, is a front view of the guide pin of the present invention.

Fig. 4 shows a conventional mounting diagram of a guide pin of a fixed disk of an electric spindle encoder.

As shown in fig. 5, a conventional guide pin structure is shown.

Fig. 6 shows a mounting diagram of a guide pin of a fixed disk of the novel electric spindle encoder.

The novel electric spindle encoder fixing disc guide pin is improved from an original common cylindrical pin into a pin structure with steps and threads, a locking mode is improved, and the vibration and impact resistance of the guide pin is improved; meanwhile, the structure of the guide pin mounting hole is improved, the original straight-through blind hole is changed into a threaded hole structure with a counter bore, and the problem that the guide pin is easy to break due to an insecure locking mode, so that the spindle clamping groove is impacted for a long time to aggravate the damage of a spindle bearing is solved; the reformed guide pin is placed on a machine tool for machining verification, and the problem that the guide pin is broken or falls off does not occur after tracking for 6 months. The service life of the equipment is prolonged, the failure and line-stopping rate of the equipment is reduced, and the consumption of spare parts is reduced.

The locking mode of the structure is screwed up by threads, so that the problem that the lathe cannot clamp a cutter due to the fact that the fixed surface of the guide pin of the fixed disc is worn, deformed and loosened in the shaking and back-and-forth impact process of the lathe for a long time is greatly reduced, the downtime of equipment is greatly reduced, and the utilization rate of the equipment is improved. The single cylinder line of the engine uses 62 spindles of the type on line, and as long as one spindle has a problem, the spindle is stopped for a long time.

1) The amount of the downtime saved is cumulative downtime (minutes) × (frequency) × 25.85 (yuan) × total people/60 (sec) × 1110 (minutes) × 60 (sec) × 3 (frequency) × 25.85 (yuan) × 100 people/60 (sec) × ￥ 8608050 (yuan) in the month.

The structure has a countersunk step, so that great friction force is generated after locking, the locking reliability of the guide pin is improved, and the problem that the guide pin is loosened and then broken by a fixed disc moving back and forth to cause long-term impact of a clamping groove of the electric spindle to aggravate the damage of the spindle bearing is solved. The damage of the electric spindle is greatly reduced, and the spare part cost is saved.

1) The spare part cost saving amount is the number of consumed parts in the month × the spare part cost (ten thousand yuan) × 3 × 77 ten thousand yuan/root 231 (ten thousand yuan).

2) The total saved amount is ￥ 8608050 (yuan) +231 (ten thousand yuan) + 10918050 (yuan).

Fig. 7 is a partially enlarged view of a guide pin mounting diagram of a fixing disc of the novel electric spindle encoder.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. The utility model provides a novel electricity main shaft encoder fixed disk mounting structure which characterized in that includes: the guide pin is cylindrical, threads are additionally arranged at one end of the guide pin, an inner hexagonal hole is additionally formed in the other end of the guide pin, and a stepped binding surface is additionally arranged at the joint of the cylindrical surface of the guide pin and the surface of the threads; there is the casing uide pin fixed orifices above the casing, there is the screw thread casing uide pin fixed orifices inboard, screw thread and the screw thread adaptation above the uide pin correspond with it, and there is fixed disk uide pin mating holes at the position that corresponds on the fixed disk, fixed disk uide pin mating holes is the counter sink, size and shape and uide pin adaptation.