Floating type tailstock supporting mechanism, multi-axis rotary table and machine tool

Abstract

The utility model discloses a floating type tailstock supporting mechanism, a multi-axis turntable and a machine tool, the floating type tailstock supporting mechanism is arranged at the tail part of a C-axis machine body, the floating type tailstock supporting mechanism comprises a tailstock body and a rotary supporting shaft, the rotary supporting shaft is connected with the C-axis machine body, and the C-axis machine body is connected with the C-axis machine body. The rotary supporting shaft is supported on the tailstock body through a self-aligning ball bearing. According to the technical scheme, the C-axis machine body adopts the floating type supporting tailstock supporting mechanism as a tail support, and the floating type supporting tailstock supporting mechanism adopts the self-aligning ball bearing, so that the floating type supporting tailstock supporting mechanism has the self-aligning angle capacity within a certain angle range, the tailstock floating effect is achieved, and the service life of the machine body is prolonged. The device is used for counteracting errors caused by assembling and machining precision of a C-axis machine body and the like, it can be guaranteed that deformation caused by assembling errors and external poor stress is avoided when the rotary table rotates, the influence caused by perpendicularity deviation is counteracted, and the reliability of product performance is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to lathe field, in particular to a floating type tailstock support mechanism, multi -shaft rotary table and lathe. BACKGROUND

[0002] In recent years, five-axis machine tool development is good, and the machining capacity requirement of lathe is higher and higher, and the five-axis rotary table precision stability requirement is higher, mainly in high precision, strong stability. The traditional five-axis rotary table tailstock support is rigid support, and the A axis and C supported by five-axis exist some mechanical errors after assembly, and the perpendicularity deviation of tailstock, after the whole assembly is completed, the non-coincidence between the axes cannot be avoided, thereby leading to the problems such as the deformation deviation of rotary table position when the A axis of rotary table rotates in space, and affecting the accuracy of output precision. SUMMARY

[0003] The utility model discloses a floating type tailstock support mechanism, multi -shaft rotary table and lathe are provided to at least solve one of the technical problems in the prior art.

[0004] The utility model discloses a floating type tailstock support mechanism, multi -shaft rotary table and lathe are provided to at least solve one of the technical problems in the prior art.

[0005] First, a floating type tailstock support mechanism is arranged at the tail of the C shaft machine body, and the floating type tailstock support mechanism comprises a tailstock body and a rotating support shaft, the rotating support shaft is connected with the C shaft machine body, and the rotating support shaft is supported on the tailstock body through a self-aligning ball bearing.

[0006] In combination with the first aspect, in some implementation manners of the first aspect, the tailstock body has a through axial hole, the hole wall of the axial hole is provided with a bearing limiting convex ring, the self-aligning ball bearing is installed on the axial hole from the side away from the C shaft machine body, and the tailstock body is provided with a bearing gland on the side away from the C shaft machine body, and the bearing gland tightly presses the outer ring of the self-aligning ball bearing on the bearing limiting convex ring.

[0007] In combination with the first aspect and the above implementation manners, in some implementation manners of the first aspect, a first sealing ring is arranged between the bearing gland and the tailstock body.

[0008] In combination with the first aspect and the above implementation manners, in some implementation manners of the first aspect, the rotating support shaft is provided with a flange at one end close to the C shaft machine body, the inner ring of the self-aligning ball bearing is sleeved on the rotating support shaft from the end away from the flange, and the rotating support shaft is provided with a blocking ring for locking the inner ring of the self-aligning ball bearing.

[0009] In some implementation forms of the first aspect, the flange is connected to the C-axis machine body by screws.

[0010] In some implementation forms of the first aspect, a second seal is arranged in the axial hole, and the second seal extends in the radial direction and is in contact with the outer circumferential surface of the flange.

[0011] In some implementation forms of the first aspect, the second seal is provided with a plurality of sealing lips distributed in the axial direction, and the second seal is in contact with the outer circumferential surface of the flange through the sealing lips.

[0012] The second aspect relates to a multi-axis rotary table, which comprises the floating tailstock support mechanism of any implementation form of the first aspect.

[0013] In some implementation forms of the second aspect, the multi-axis rotary table further comprises a tilt axis mechanism and a C-axis machine body, the tilt axis mechanism and the floating tailstock support mechanism are arranged at two ends of the C-axis machine body, and the tilt axis mechanism and the floating tailstock support mechanism define an A-axis rotation axis of the C-axis machine body.

[0014] The third aspect relates to a machine tool, which comprises the multi-axis rotary table of any implementation form of the second aspect.

[0015] One of the technical solutions has at least one of the following advantages or beneficial effects: the technical solution of the utility model discloses a floating support tailstock support mechanism as the tail support, wherein the floating support tailstock support mechanism adopts a self-aligning ball bearing, so that the floating support tailstock support mechanism has self-aligning angle capability within a certain angle range, achieves the tailstock floating effect, offsets errors caused by assembly and machining precision of the C-axis machine body, avoids deformation caused by assembly errors and external bad stress during rotary table rotation, offsets the influence caused by perpendicularity deviation, and ensures the reliability of product performance.

[0016] Additional aspects and advantages of the utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0018] Figure 1 is an embodiment structure top view of the multi-axis rotary table of the utility model;

[0019] Figure 2 is Figure 1A floating tailstock support mechanism structure schematic diagram in one embodiment is shown.

[0020] Figure 3 is Figure 2 A local enlarged view at A in the middle. DETAILED DESCRIPTION

[0021] This part will describe the specific embodiments of the utility model in detail, the preferred embodiments of the utility model are shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0022] In the utility model, if the direction (up, down, left, right, front and back) is described, it is only for the convenience of describing the technical scheme of the utility model, and it is not indicated or implied that the indicated technical feature must have a specific orientation, be constructed and operated in a specific orientation, therefore it cannot be understood as the limitation of the utility model.

[0023] In the utility model, the meaning of "several" is one or more, the meaning of "multiple" is two or more, "more than" "less than" "exceed" and the like are understood as not including the number; "above" "below" "within" and the like are understood as including the number. In the description of the utility model, if "first" "second" is described, it is only used for distinguishing technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0024] In the utility model, unless otherwise explicitly limited, the words such as "set", "install", "connect" and the like should be understood in a broad sense, for example, can be directly connected, can also be indirectly connected through intermediate medium; can be fixedly connected, can also be detachably connected, can also be integrally formed; can be mechanically connected, can also be electrically connected or can communicate with each other; it can be the communication or interaction relationship between two elements inside or two elements. The skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0025] Reference Figure 1 、 Figure 2 、 Figure 3This utility model provides a floating tailstock support mechanism, which is disposed at the tail of the C-axis body 100. The floating tailstock support mechanism includes a tailstock body 200 and a rotating support shaft 300. The rotating support shaft 300 is connected to the C-axis body 100 and is supported on the tailstock body 200 by a self-aligning ball bearing 400. The C-axis body 100 achieves rotational support by means of the floating tailstock support mechanism, that is, the rotating support shaft 300 of the floating tailstock support mechanism can realize the rotation function.

[0026] Combination Figure 3 The technical solution of this utility model is that the C-axis body 100 adopts a floating support tailstock support mechanism as the tail support. The floating tailstock support mechanism uses a self-aligning ball bearing 400, which enables the floating support tailstock support mechanism to have a self-aligning angle capability within a certain angle range, so as to achieve the tailstock floating effect. This is used to offset the errors caused by the assembly and machining accuracy of the C-axis body 100, etc., and can ensure that the deformation caused by assembly errors and external adverse forces is avoided when the turntable rotates, offset the influence of verticality deviation, and ensure the reliability of product performance.

[0027] In some embodiments, see Figure 3 The tailstock body 200 has a through axial hole, and the hole wall is provided with a bearing limiting protrusion 201. A self-aligning ball bearing 400 is installed in the axial hole from the side away from the C-axis body 100. A bearing cap 202 is provided on the side of the tailstock body 200 away from the C-axis body 100, and the bearing cap 202 presses the outer ring of the self-aligning ball bearing 400 against the bearing limiting protrusion 201. The self-aligning ball bearing 400 is stably installed in the axial hole of the tailstock body 200 through the bearing limiting protrusion 201 and the bearing cap 202.

[0028] Further, see Figure 3 The bearing cap 202 is located at the end of the axial hole. The tailstock body 200 has a groove at the end edge of the axial hole. The edge of the bearing cap 202 is embedded in the groove and is fixedly connected to the tailstock body 200 by axial fasteners. A first sealing ring 203 is provided between the bearing cap 202 and the tailstock body 200 to ensure that no foreign objects enter during operation and improve the safety and reliability of the equipment.

[0029] In some embodiments, see Figure 3, the flange 301 is connected to the C-shaft machine body 100 by a screw, the screw is installed in the counterbore of the flange 301 from the side close to the self-aligning ball bearing 400, and the flange 301 is used for limiting the self-aligning ball bearing 400 on the rotating support shaft 300 and is used as a connecting structure of the rotating support shaft 300 and the C-shaft machine body 100, so that the structure is more simple and the connection is more convenient.

[0030] Further, referring to Figure 3 , the flange 301 is connected to the C-shaft machine body 100 by a screw, the screw is installed in the counterbore of the flange 301 from the side close to the self-aligning ball bearing 400, and the flange 301 is used for limiting the self-aligning ball bearing 400 on the rotating support shaft 300 and is used as a connecting structure of the rotating support shaft 300 and the C-shaft machine body 100, so that the structure is more simple and the connection is more convenient.

[0031] In some embodiments, referring to Figure 3 , the axial hole is provided with a second sealing piece 204, the second sealing piece 204 extends in the radial direction and is in contact with the outer circumferential surface of the flange 301, the second sealing piece 204 is used for sealing the end of the axial hole close to the C-shaft machine body 100, and foreign matters are prevented from entering during operation.

[0032] Further, referring to Figure 3 , the second sealing piece 204 is provided with a plurality of sealing lips distributed in the axial direction, the sealing lips are annular, and the second sealing piece 204 is in contact with the outer circumferential surface of the flange 301 through the plurality of sealing lips, so that good sealing performance is achieved.

[0033] The embodiment of the utility model also provides a multi-shaft rotary table, referring to Figure 1 , Figure 2 , the multi-shaft rotary table comprises the floating tailstock support mechanism in any one of the above embodiments.

[0034] Referring to Figure 1 , Figure 2 , the multi-shaft rotary table further comprises an inclined shaft mechanism and a C-shaft machine body 100, the inclined shaft mechanism 500 and the floating tailstock support mechanism are arranged at two ends of the C-shaft machine body 100, and the inclined shaft mechanism 500 and the floating tailstock support mechanism define an A-shaft rotation axis of the C-shaft machine body 100. The C-shaft machine body 100 can rotate around the A-shaft rotation axis under the drive of the inclined shaft mechanism 500. The C-shaft machine body 100 is provided with a rotary table 101, and the rotary table 101 can rotate around a C-shaft rotation axis perpendicular to the A-shaft rotation axis.

[0035] The embodiment of the utility model also provides a machine tool comprising the multi-shaft rotary table in any one of the above embodiments.

[0036] In the description of the present specification, the description referring to the terms "example", "embodiment" or "some embodiments" or the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] Of course, the present application is not limited to the above-described embodiments, and those skilled in the art can make equivalent modifications or replacements without departing from the spirit of the present application. These equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A floating tailstock support mechanism characterized by, The floating tailstock support mechanism is arranged at the tail of the C-axis machine body, and comprises a tailstock body and a rotating support shaft connected with the C-axis machine body, and the rotating support shaft is supported on the tailstock body through a self-aligning ball bearing.

2. The floating tail seat support mechanism according to claim 1, wherein The tailstock body has a through axial hole, and a bearing limiting protruding ring is arranged on the hole wall of the axial hole; the self-aligning ball bearing is mounted on the axial hole from the side far away from the C-axis machine body; and the tailstock body is provided with a bearing gland on the side far away from the C-axis machine body, and the bearing gland presses the outer ring of the self-aligning ball bearing against the bearing limiting protruding ring.

3. The floating tail seat support mechanism according to claim 2, wherein A first sealing ring is arranged between the bearing gland and the tailstock body.

4. The floating tail seat support mechanism of claim 2, wherein, The rotating support shaft is provided with a flange at the end close to the C-axis machine body; the inner ring of the self-aligning ball bearing is sleeved on the rotating support shaft from the end far away from the flange; and the rotating support shaft is provided with a stop ring for locking the inner ring of the self-aligning ball bearing.

5. The floating tail seat support mechanism of claim 4, wherein, The flange is connected to the C-axis machine body through screws.

6. The floating tail seat support mechanism of claim 4, wherein, A second sealing element is arranged in the axial hole, and the second sealing element extends in the radial direction and is in contact with the outer peripheral surface of the flange.

7. The floating tail seat support mechanism of claim 6, wherein, The second sealing element is provided with a plurality of sealing lips distributed in the axial direction, and the second sealing element is in contact with the outer peripheral surface of the flange through the sealing lips.

8. A multi-axis turntable characterized by, The floating tailstock support mechanism comprises the floating tailstock support mechanism according to any one of claims 1-7.

9. The multi-axis turntable of claim 8, wherein, The tilting shaft mechanism and the C-axis machine body are further included, and the tilting shaft mechanism and the floating tailstock support mechanism are arranged at the two ends of the C-axis machine body, and the tilting shaft mechanism and the floating tailstock support mechanism define the A-axis rotation axis of the C-axis machine body.

10. A machine tool, characterized by The multi-axis rotary table comprises the multi-axis rotary table according to claim 8 or 9.

Images