CN221064468U - Tailstock device of lathe - Google Patents

Abstract

The utility model discloses a tailstock device of a lathe, and aims to provide the tailstock device of the lathe with a live center convenient to detach. The device comprises a base, a tailstock, a sleeve, a live center and an adjusting mechanism, wherein the tailstock is fixedly connected to the upper end of the base and provided with a through hole, the sleeve is sleeved in the through hole and can linearly move along the through hole, the live center is inserted into the left end of the sleeve, and the adjusting mechanism drives the sleeve to move relative to the tailstock; an internal thread section is arranged at the left end of the through hole, and an ejection sleeve is screwed on the internal thread section; the ejection sleeve comprises a threaded pipe section matched with the threaded section in the through hole, an adjusting section with the outer diameter larger than the aperture of the through hole and positioned at the left end of the threaded pipe section, and an ejection section with the inner hole aperture smaller than the maximum outer diameter of the live center and positioned at the left end of the adjusting section; the periphery of the adjusting section is provided with anti-skid patterns. The utility model is suitable for various lathes.

Description

Tailstock device of lathe

Technical Field

The utility model relates to the technical field of machining equipment, in particular to a tailstock device of a lathe.

Background

The lathe is a machine tool for turning a rotating workpiece with a turning tool. The tail frame device of the existing lathe mainly comprises a base, a tail seat, a sleeve sleeved in the tail seat, a live center inserted in the sleeve and an adjusting mechanism for adjusting the sleeve. When the live center needs to be replaced, as the sleeve is tightly matched with the live center and cannot be pulled out by hands directly, through holes are usually formed in the tail seat and the sleeve, when the live center needs to be disassembled, an iron rod is usually stretched into the through holes to prop against the live center, the iron rod is knocked by a hammer, and the live center is separated from the sleeve under the action of external force, so that the live center can be taken down. The disassembly mode of the center is troublesome, and damage to the shaft sleeve or the center can be caused due to improper operation during disassembly.

Disclosure of utility model

The utility model aims to overcome the defects in the prior art and provides a tailstock device of a lathe with a live center convenient and quick to detach.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

The tailstock device of the lathe comprises a base, a tailstock fixedly connected to the upper end of the base and provided with a through hole, a sleeve sleeved in the through hole and capable of linearly moving along the through hole, a live center inserted in the left end of the sleeve, and an adjusting mechanism for driving the sleeve to move relative to the tailstock; an internal thread section is arranged at the left end of the through hole, and an ejection sleeve is screwed on the internal thread section; the ejection sleeve comprises a threaded pipe section matched with the threaded section in the through hole, an adjusting section with the outer diameter larger than the aperture of the through hole and positioned at the left end of the threaded pipe section, and an ejection section with the inner hole aperture smaller than the maximum outer diameter of the live center and positioned at the left end of the adjusting section; the periphery of the adjusting section is provided with anti-skid patterns.

Preferably, the adjusting mechanism comprises a screw rod which is connected with the right end of the sleeve in a threaded fit manner and extends into the sleeve, a sleeve sleeved on the screw rod and provided with a shoulder at the middle part, an end cover sleeved on the sleeve and positioned at the left side of the shoulder, a gland sleeved on the sleeve and positioned at the right side of the shoulder, and a hand wheel positioned at the right end of the gland and fixedly connected with the screw rod; the end cover and the gland are fixedly connected to the right end of the tailstock through bolts.

Preferably, an enlarged hole for accommodating the shoulder is formed in the end, adjacent to the shoulder, of the gland or the end cover.

Preferably, a lubrication oil passage is provided on an outer surface of the sleeve.

Preferably, the outer wall section of the adjusting section is regular hexagon.

Preferably, the left end of the ejection section is fixedly connected with a polytetrafluoroethylene ring.

Compared with the prior art, the utility model has the following advantages:

According to the utility model, the live center can be removed from the sleeve by rotating the ejection sleeve when the live center is removed without other tools, so that the live center is more convenient and rapid to remove, and the sleeve and other components are not affected by impact force when the live center is removed, so that the sleeve and other components are effectively prevented from being damaged.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a first embodiment of the present utility model.

Fig. 2 is an exploded view of fig. 1.

Fig. 3 is a perspective view of the ejection sleeve of fig. 1 screwed into the live center.

Fig. 4 is a schematic structural view of a second embodiment of the present utility model.

Fig. 5 is an enlarged view of a portion a in fig. 4.

Wherein:

The device comprises a base, a 2-through hole, a 3-tailstock, a 4-sleeve, a 5-live center, a 6-adjusting mechanism, a 7-ejection sleeve, an 8-threaded pipe section, a 9-adjusting section, a 10-ejection section, 11-anti-skid threads, a 12-lubricating oil duct, a 13-polytetrafluoroethylene ring, a 61-screw, a 62-shoulder, a 63-sleeve, a 64-end cover, a 65-gland and a 66-hand wheel.

Detailed Description

In order to more clearly illustrate the objects, technical solutions and advantages of the present utility model, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the embodiments described below are only some, but not all, embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive effort, are within the scope of protection of the present utility model based on the embodiments described below.

In the description of the present utility model, technical or scientific terms used should be given the ordinary meaning as understood by one of ordinary skill in the art to which the present utility model belongs. It should be noted that unless explicitly stated or limited otherwise, the terms "mounted," "connected," "configured," and the like are to be construed broadly and include, for example, fixedly connected, configured, detachably connected, configured, and integrally connected and configured. The terms "coupled" and "connected," and the like, are not limited to physical or mechanical connections, but may also include electrical connections, as those skilled in the art will appreciate the particular meaning of the terms in this disclosure as appropriate. The terms "comprises," "comprising," or the like, are intended to cover an element or article appearing before the term and the equivalents thereof recited after the term, without excluding other elements or articles. The terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model.

Meanwhile, in order to keep the following description of the embodiments of the present utility model clear and concise, detailed descriptions of known functions and known components are omitted.

Example 1

As shown in fig. 1-3, the tailstock device of the lathe comprises a base 1, a tailstock 3 fixedly connected to the upper end of the base 1 and provided with a through hole 2, a sleeve 4 sleeved in the through hole 2 and capable of linearly moving along the through hole 2, a live center 5 inserted at the left end of the sleeve 4, and an adjusting mechanism 6 for driving the sleeve 4 to move relative to the tailstock 3; an internal thread section is arranged at the left end of the through hole 2, and an ejection sleeve 7 is screwed on the internal thread section; the ejection sleeve 7 comprises a threaded pipe section 8 matched with the internal threaded section of the through hole 2, an adjusting section 9 with the outer diameter larger than the aperture of the through hole 2 and positioned at the left end of the threaded pipe section 8, and an ejection section 10 with the inner hole aperture smaller than the maximum outer diameter of the live center 5 and positioned at the left end of the adjusting section 9; the periphery of the adjusting section 9 is provided with anti-skid patterns 11.

In this embodiment, the adjusting mechanism 6 includes a screw 61 screwed with the right end of the sleeve 4 and extending into the sleeve 4, a sleeve 63 sleeved on the screw 61 and having a shoulder 62 in the middle, an end cover 64 sleeved on the sleeve 63 and located at the left side of the shoulder 62, a gland 65 sleeved on the sleeve 63 and located at the right side of the shoulder 62, and a hand wheel 66 located at the right end of the gland 65 and fixedly connected with the screw 61; the end cover 64 and the gland 65 are fixedly connected to the right end of the tailstock 3 through bolts (not shown in the figure), specifically, corresponding mounting holes are formed on the corresponding end surfaces of the end cover 64, the gland 65 and the tailstock 3, and then the corresponding mounting holes are fixedly connected to the tailstock 3 after penetrating through the end cover 64 and the gland 65 through bolts.

As a further improvement of this embodiment, an enlarged hole (not shown in the figure) for accommodating the shoulder 62 may be provided at the end of the gland 65 or the end cap 64 adjacent to the shoulder 62, and a stepped hole is formed with the original hole, so that the shoulder 62 is located in the enlarged hole, and the end faces of the gland 65 and the end cap 64 can be attached, thereby improving the compactness of the structure.

As a further improvement of the present embodiment, the outer surface of the sleeve 4 is provided with a lubrication oil passage 12, and accordingly, an oil injection hole (not shown) communicating with the lubrication oil passage 12 should be provided on the tailstock 3 so that the lubrication oil can reach the lubrication oil passage 12. The remainder was substantially the same as in example 1.

As a further modification of the present embodiment, the outer wall section of the adjusting section 9 may also have a shape of regular hexagon or the like for easy operation.

Example 2

As shown in fig. 4-5, in the tailstock device of the lathe, the left end of the ejection section 10 is fixedly connected with the polytetrafluoroethylene ring 13, and can be connected with the ejection sleeve 7 in a bonding mode or the like, and the abrasion between the ejection section and the live center 5 can be reduced by arranging the polytetrafluoroethylene ring 13.

According to the utility model, the ejection sleeve 7 is arranged, the live center 5 can be ejected out of the sleeve for a certain distance by rotating the ejection sleeve 7 when the live center is dismounted without other tools, and at the moment, the live center 5 and the sleeve 4 form looseness, so that the live center 5 can be directly taken out of the sleeve 4 by hands. The live center 5 is more convenient and quick to detach, and the sleeve 4 and other components are not influenced by external impact force during the detachment, so that the sleeve and other components can be effectively prevented from being damaged.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model. Any modification, equivalent replacement, and improvement of the technical solution or part of the technical features described in the above specific embodiments should be included in the protection scope of the present utility model, which should be included in the spirit and principle of the present utility model, for those skilled in the art.

Claims (9)

1. The tail frame device of the lathe comprises a base (1), a tail seat (3) fixedly connected to the upper end of the base (1) and provided with a through hole (2), a sleeve (4) sleeved in the through hole (2) and capable of linearly moving along the through hole (2), a live center (5) inserted at the left end of the sleeve (4), and an adjusting mechanism (6) for driving the sleeve (4) to move relative to the tail seat (3); the method is characterized in that: an internal thread section is arranged at the left end of the through hole (2), and an ejection sleeve (7) is screwed on the internal thread section; the ejection sleeve (7) comprises a threaded pipe section (8) matched with the internal threaded section of the through hole (2), an adjusting section (9) with the outer diameter larger than the aperture of the through hole (2) and positioned at the left end of the threaded pipe section (8), and an ejection section (10) with the inner hole aperture smaller than the maximum outer diameter of the live center (5) and positioned at the left end of the adjusting section (9); the periphery of the adjusting section (9) is provided with anti-skid patterns (11).

2. The tailstock apparatus of a lathe as defined in claim 1, wherein: the adjusting mechanism (6) comprises a screw rod (61) which is connected with the right end of the sleeve (4) in a threaded fit manner and extends into the sleeve (4), a sleeve (63) sleeved on the screw rod (61) and provided with a shoulder (62) at the middle part, an end cover (64) sleeved on the sleeve (63) and positioned on the left side of the shoulder (62), a gland (65) sleeved on the sleeve (63) and positioned on the right side of the shoulder (62), and a hand wheel (66) positioned at the right end of the gland (65) and fixedly connected with the screw rod (61); the end cover (64) and the gland (65) are fixedly connected to the right end of the tailstock (3) through bolts.

3. The tailstock apparatus of a lathe as defined in claim 2, wherein: one end of the gland (65) or the end cover (64) adjacent to the retaining shoulder (62) is provided with an enlarged hole for accommodating the retaining shoulder (62).

4. A tailstock apparatus of a lathe as defined in any one of claims 1 to 3, wherein: the outer surface of the sleeve (4) is provided with a lubricating oil duct (12).

5. A tailstock apparatus of a lathe as defined in any one of claims 1 to 3, wherein: the outer wall section of the adjusting section (9) is in a regular hexagon shape.

6. The tailstock apparatus of a lathe as defined in claim 4, wherein: the outer wall section of the adjusting section (9) is in a regular hexagon shape.

7. A tailstock apparatus of a lathe as defined in any one of claims 1 to 3, wherein: and the left end of the ejection section (10) is fixedly connected with a polytetrafluoroethylene ring (13).

8. The tailstock apparatus of a lathe as defined in claim 4, wherein: and the left end of the ejection section (10) is fixedly connected with a polytetrafluoroethylene ring (13).

9. The tailstock apparatus of a lathe as defined in claim 5, wherein: and the left end of the ejection section (10) is fixedly connected with a polytetrafluoroethylene ring (13).