CN214023521U

CN214023521U - Lathe center device with low cost, high precision and convenient installation

Info

Publication number: CN214023521U
Application number: CN202022433632.0U
Authority: CN
Inventors: 王浩
Original assignee: Kunshan Zhongyujie Machinery Co ltd
Current assignee: Kunshan Zhongyujie Machinery Co ltd
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2021-08-24
Anticipated expiration: 2030-10-28

Abstract

The utility model discloses a lathe centre device with low cost and high precision, which is convenient to install and comprises a centre, a dead lever, a dial, a machine tool tailstock, a mandrel, a centre outer body, a bearing, a shaft sleeve, a nut, a sealing ring, an oil seal and a shaft cover, the utility model is specially provided with a thrust bearing which is assembled back to back, the load action of the two bearings is arranged outside the central line of the bearing, the force action span is large, the clearance of the bearing is large, the bearing can not be blocked, and the swing of a main shaft can be reduced, in addition, a threaded connecting rod arranged on the centre is matched with a mounting threaded hole arranged on the mandrel, when different workpieces are processed, the centre is only required to be replaced by screwing down the centre in a rotating way, the replacement is convenient, but the shaft cover is arranged at the top of the centre outer body and is fixed on the centre outer body through a bolt, the shaft cover extends to a centre block arranged on the centre, the center can be further fixed, and the center is guaranteed not to be loosened in the operation process.

Description

Lathe center device with low cost, high precision and convenient installation

Technical Field

The utility model relates to a top fixed technical field, in particular to top device of lathe of low-cost high accuracy simple to operate.

Background

The centre of current lathe adds man-hour to the part, and the dead centre that leads to can't rotate that blocks easily appears in rotation process bearing, and wobbling situation also can take place at rotation in-process main shaft, finally causes the work piece processing badly to the centre kind that needs to use when processing different work pieces is different, and different centre need be changed to the work piece of processing difference, adopts multiple centre then can make the cost-push of mill processing work piece.

The utility model provides a lathe top device of low-cost high accuracy simple to operate solves above-mentioned technical problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a top device of lathe of low-cost high accuracy simple to operate solves above-mentioned technical problem.

The utility model provides a top device of lathe of low-cost high accuracy simple to operate which characterized in that: the center is composed of a center head, a center block and a threaded connecting rod, a threaded mounting hole is formed in one end of the mandrel, the dial is fixed to the tailstock of the machine tool through the center rod, the center is fixed to the mandrel through the threaded connecting rod in the threaded mounting hole in a spiral mode, two bearings are arranged at positions near the position, where the mandrel is in contact with the center, of the center block, the shaft sleeve is arranged between the two bearings, the mandrel is installed in an inner cavity of the center outer body, the center outer body is installed and fixed to the dial, a shaft cover is arranged at the top of the center outer body and fixed to the center outer body through bolts, and a sealing ring and an oil seal are arranged at the contact position of the shaft cover and the center block.

Further, the bearing is a thrust bearing, and the two bearings are assembled in a back-to-back manner.

Furthermore, the two bearings form a rotating mechanism, and two nuts are respectively arranged on two sides of the rotating mechanism.

Compared with the prior art, the utility model has the advantages that: specially be equipped with the thrust bearing of back-to-back equipment, the load effect of two bearings is outside the central line of bearing, the effort span is big, bearing play clearance is big, the bearing can not block and die, it can keep rotatory always top, and can reduce the swing of main shaft, the threaded connection pole that top was equipped with in addition is equipped with the installation screw hole phase-match with the dabber, when processing different work pieces, only need with top rotation to be unscrewed change into the top of needs can, it is convenient to change, high durability and convenient operation, but only lean on threaded connection to become flexible easily, so the top at top ectosome is equipped with the shaft cover, and the shaft cover passes through the bolt fastening on top ectosome, the shaft cover extends to on top piece that top set up, can further fix top, guarantee top can not take place not hard up in the operation process, guarantee top normal work.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.

Fig. 1 is a schematic structural diagram of a low-cost, high-precision lathe center device convenient to install according to an embodiment of the present invention;

in the drawings: 1. a tip; 2. pulling a rod; 3. pulling out the disc; 4. a machine tool tailstock; 5. a mandrel; 6. a centre outer body; 7. a bearing; 8. a shaft sleeve; 9. a nut; 10. a seal ring; 11. oil sealing; 12. a pointed head; 13. a tip block; 14. a threaded connecting rod; 15. a threaded mounting hole; 16. a shaft cover; 17. and a rotating mechanism.

Detailed Description

In view of the deficiencies in the prior art, the technical solution of the present invention can be provided through long-term research and a large amount of practice. The technical solution in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention.

Fig. 1 is the embodiment of the utility model provides a low-cost high accuracy simple to operate's that provides structural schematic diagram of the top device of lathe, as shown in fig. 1, a low-cost high accuracy simple to operate's top device of lathe its characterized in that: the center comprises a center 1, a pull rod 2, a pull disc 3, a machine tool tailstock 4, a mandrel 5, a center outer body 6, bearings 7, a shaft sleeve 8, a nut 9, a seal ring 10, an oil seal 11 and a shaft cover 16, wherein the center 1 consists of a tip head 12, a tip block 13 and a threaded connecting rod 14, one end of the mandrel 5 is provided with a threaded mounting hole 15, the pull disc 3 is fixed on the machine tool tailstock 4 through the pull rod 2, the center 1 is screwed in the threaded mounting hole 15 through the threaded connecting rod 14 so as to be fixed on the mandrel 5, two bearings 7 are arranged at positions near the contact position of the mandrel 5 and the center 1, the shaft sleeve 8 is arranged between the two bearings 7, the mandrel 5 is arranged in an inner cavity of the center outer body 6, the center outer body 6 is fixedly arranged on the pull disc 3, the top of the center outer body 6 is provided with the shaft cover 16, and the shaft cover 16 is fixed on the center outer body 6 through bolts, and a sealing ring 10 and an oil seal 11 are arranged at the contact position of the shaft cover 16 and the center block 13.

Preferably, the bearing 7 is a thrust bearing, and the two bearings 7 are assembled in a back-to-back manner.

Preferably, the two bearings 7 form a rotating mechanism 17, and two nuts 9 are respectively arranged on two sides of the rotating mechanism 17.

The beneficial effects of the utility model include: specially be equipped with the thrust bearing of back-to-back equipment, the load effect of two bearings is outside the central line of bearing, the effort span is big, bearing play clearance is big, the bearing can not block and die, it can keep rotatory always top, and can reduce the swing of main shaft, the threaded connection pole that top was equipped with in addition is equipped with the installation screw hole phase-match with the dabber, when processing different work pieces, only need with top rotation to be unscrewed change into the top of needs can, it is convenient to change, high durability and convenient operation, but only lean on threaded connection to become flexible easily, so the top at top ectosome is equipped with the shaft cover, and the shaft cover passes through the bolt fastening on top ectosome, the shaft cover extends to on top piece that top set up, can further fix top, guarantee top can not take place not hard up in the operation process, guarantee top normal work.

The utility model provides a pair of lathe top device of low-cost high accuracy simple to operate should understand, and above-mentioned embodiment is only for the explanation the utility model discloses a technical conception and characteristics, its aim at let the personage of familiar with this technique can understand the utility model discloses an according to in order to implement, can not restrict with this the utility model discloses a protection scope. All simple changes and replacements made by the contents of the utility model are included in the protection scope of the utility model.

Claims

1. The utility model provides a top device of lathe of low-cost high accuracy simple to operate which characterized in that: the center is composed of a center head, a center block and a threaded connecting rod, a threaded mounting hole is formed in one end of the mandrel, the dial is fixed to the tailstock of the machine tool through the center rod, the center is fixed to the mandrel through the threaded connecting rod in the threaded mounting hole in a spiral mode, two bearings are arranged at positions near the position, where the mandrel is in contact with the center, of the center block, the shaft sleeve is arranged between the two bearings, the mandrel is installed in an inner cavity of the center outer body, the center outer body is installed and fixed to the dial, a shaft cover is arranged at the top of the center outer body and fixed to the center outer body through bolts, and a sealing ring and an oil seal are arranged at the contact position of the shaft cover and the center block.

2. A low cost high precision convenient to install lathe center apparatus as claimed in claim 1, wherein: the bearing is a thrust bearing, and the two bearings are assembled in a back-to-back mode.

3. A low cost high precision convenient to install lathe center apparatus as claimed in claim 1, wherein: the two bearings form a rotating mechanism, and two nuts are arranged on two sides of the rotating mechanism respectively.