CN-122007458-A - Tailstock center adjusting device, tailstock assembly and adjusting method

CN122007458ACN 122007458 ACN122007458 ACN 122007458ACN-122007458-A

Abstract

The embodiment of the application relates to the technical field of machine tools or machine tool parts, and discloses a tailstock center adjusting device, a tailstock assembly and an adjusting method. Because part of the eccentric shafts are rotatably arranged in the shell, the rotation adjusting end can drive the eccentric shafts to integrally rotate in the shell, and further the executing end of the eccentric shafts synchronously moves. Because the regulating piece is connected to the executing end, and the regulating piece is arranged in the groove body formed by the sleeve, the movement of the executing end drives the regulating piece to move in the groove body. Along with the movement of the adjusting piece, the adjusting piece is contacted with the movable center in the sleeve, and the position of the movable center is adjusted through the acting force of the adjusting piece on the movable center under the eccentric action of the eccentric shaft. In the whole process, the shell is always connected with the sleeve, and stable support is provided for the eccentric shaft and the adjusting piece.

Inventors

CHANG BOYU
YANG SICHEN
GAO YANG
LIU HAOZHI
LI NING
XIE LONG
WU ZHENG
ZHAO PENG
LIU DI
YU DUO
JIANG HAIYANG
LING SHUANG
YAN JINGYA
ZHANG XIA

Assignees

通用技术集团机床工程研究院有限公司

Dates

Publication Date: 20260512
Application Date: 20260224

Claims (10)

1. The utility model provides a tailstock center adjusting device, its characterized in that, tailstock center includes sleeve and removes center, remove center setting is in the sleeve, tailstock center adjusting device includes: a housing for connection to the sleeve; The eccentric shaft is partially rotatably arranged in the shell, two ends of the eccentric shaft extend out through the shell, one end of the eccentric shaft is an adjusting end, and the other end of the eccentric shaft is an executing end; The sleeve is provided with a groove body, the adjusting piece is arranged in the groove body and connected to the executing end and used for being in contact with the movable center.
2. The tailstock center adjustment device of claim 1, wherein the housing comprises: the eccentric shaft is arranged in the guide sleeve; The eccentric cover is connected with the guide sleeve, the adjusting end extends out through the guide sleeve, and the executing end extends out through the guide sleeve.
3. The tailstock center adjustment device of claim 2, further comprising: the assembly nut is sleeved on the eccentric shaft and connected with the eccentric cover; the first elastic piece is arranged between the assembly nut and the guide sleeve.
4. The tailstock center adjustment device of claim 2, further comprising: The dial plate is connected to the eccentric cover, and the dial plate is marked with eccentricity.
5. The tailstock center adjustment device according to any one of claims 1 to 4, wherein the adjustment member comprises: The adjusting key is connected to the executing end through the joint bearing.
6. The tailstock center adjustment device according to any one of the claims 1 to 4, wherein, The tailstock center adjusting device is arranged along the radial direction of the tailstock center, and the adjusting piece is arranged along the axial direction of the tailstock center.
7. The tailstock center adjustment device according to any one of claims 1-4, further comprising a locking assembly for locking the eccentric shaft against rotation, the locking assembly comprising: a locking screw connected to the sleeve; The locking block is abutted to the locking screw and is used for being abutted to the eccentric shaft.
8. The tailstock center adjustment device according to any one of claims 1 to 4, further comprising: And the adjusting nut is arranged at the adjusting end of the eccentric shaft.
9. A tailstock assembly, comprising: the tailstock center adjustment device according to any one of claims 1 to 8; And the tailstock center adjusting device is connected with the tailstock center.
10. A method for adjusting a tailstock center, applied to the tailstock assembly of claim 9, comprising: driving the movable center to move along the length direction of the sleeve so as to realize the position adjustment of the movable center in the first direction; And the adjusting end of the tailstock center adjusting device is rotated, so that the eccentric shaft drives the adjusting piece to move, and the adjusting piece is contacted with the movable center to realize the position adjustment of the movable center in the second direction.

Description

Tailstock center adjusting device, tailstock assembly and adjusting method Technical Field The embodiment of the application relates to the technical field of machine tools or machine tool parts, in particular to a tailstock center adjusting device, a tailstock assembly and an adjusting method. Background In the field of machining, machine tools such as lathes, milling machines and the like have wide machining requirements on long-axis workpieces (such as optical axes, lead screws and step shafts), and tailstock centers are used as core auxiliary components, so that the performance and the adjustment accuracy of the tailstock centers directly determine the machining quality (such as the cylindricity and the cylindricity) and the production efficiency of the workpieces. In the current industry, the tailstock center mainly forms a 'two-point support' through being matched with the main shaft center (or the chuck), so that the problem of processing deformation of long-shaft workpieces caused by insufficient rigidity is solved, key functions such as ensuring the perpendicularity of end surfaces and auxiliary clamping and positioning are carried out, and especially in a high-speed processing scene, the 'live center' can avoid friction loss and overheating of the workpieces by virtue of an internal rolling bearing structure, so that the high-precision processing is an important support. However, the adjustment mode of the traditional tailstock center has obvious technical pain points, and the double requirements of modern processing on efficiency and precision are difficult to meet. On one hand, the core adjustment aim is to realize strict coaxiality (including radial alignment and axial alignment) of the center axis and the spindle axis, but the traditional adjustment depends on manual operation, needs repeated calibration by means of tools such as a dial indicator, a dial indicator and the like, is tedious in process and time-consuming, has extremely high requirements on the skill of an operator, and particularly has the defects of taper, out-of-coaxiality and the like of a workpiece due to operation deviation easily caused by a new operator, on the other hand, the traditional adjustment structure lacks an efficient radial adjustment mechanism, needs gradual fine adjustment and repeated detection during adjustment, cannot quickly respond to the dynamic correction requirement on the center position in the machining process, lacks a stable locking structure after adjustment, easily causes center position deviation due to machine tool vibration, and further influences machining stability. Disclosure of Invention In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description. This section of the invention is not intended to limit the critical and essential features of the claimed subject matter, nor is it intended to be used as an attempt to determine the scope of the claimed subject matter. The present invention aims to solve at least one of the technical problems existing in the prior art or related art. To this end, a first aspect of the present invention provides a tailstock center adjustment device. A second aspect of the invention provides a tailstock assembly. The third aspect of the invention provides a tailstock center adjusting method. In view of this, a first aspect of an embodiment according to the present application proposes a tailstock center adjustment device, the tailstock center including a sleeve and a moving center, the moving center being disposed within the sleeve, the tailstock center adjustment device comprising: a housing for connection to the sleeve; The eccentric shaft is partially rotatably arranged in the shell, two ends of the eccentric shaft extend out through the shell, one end of the eccentric shaft is an adjusting end, and the other end of the eccentric shaft is an executing end; The sleeve is provided with a groove body, the adjusting piece is arranged in the groove body and connected to the executing end and used for being in contact with the movable center. In one possible embodiment, the housing comprises: the eccentric shaft is arranged in the guide sleeve; The eccentric cover is connected with the guide sleeve, the adjusting end extends out through the guide sleeve, and the executing end extends out through the guide sleeve. In one possible embodiment, the tailstock center adjustment device further includes: the assembly nut is sleeved on the eccentric shaft and connected with the eccentric cover; the first elastic piece is arranged between the assembly nut and the guide sleeve. In one possible embodiment, the tailstock center adjustment device further includes: The dial plate is connected to the eccentric cover, and the dial plate is marked with eccentricity. In a possible embodiment, the adjusting member comprises: The adjusting key is connected to the executing end through the joint bearing. I