CN215634778U - Ball screw bearing supporting structure with eccentric structure - Google Patents

Abstract

The utility model relates to the technical field of ball screws, in particular to a ball screw bearing supporting structure with an eccentric structure, which comprises a supporting seat, wherein a positioning hole is formed in the top end surface of the supporting seat, a fixing barrel is fixedly connected to the central position of the supporting seat, an anti-eccentric mechanism is arranged in the fixing barrel, the anti-eccentric mechanism comprises a bearing sleeve, an annular groove is formed in the surface of the bearing sleeve, and a shaft ball is arranged in the annular groove. The device is through being provided with anti-decentration mechanism, compares in traditional structure, and this device increases the atress area that rotates the lead screw through two sets of bearing sleeves that set up, simultaneously, carries on spacingly through the retaining ring to the bearing sleeve, avoids the bearing sleeve to swing when using, influences the rotation that rotates the lead screw, has improved the stability when rotating the lead screw rotation to a certain extent, avoids rotating the lead screw atress uneven in rotating, leads to rotating the eccentric condition of lead screw and takes place.

Description

Ball screw bearing supporting structure with eccentric structure

Technical Field

The utility model relates to the technical field of ball screws, in particular to a ball screw bearing supporting structure with an eccentric structure.

Background

The ball screw has a large number of balls rolling between the screw shaft and the nut, so that high movement efficiency can be obtained, compared with the conventional sliding screw pair, the driving torque is less than one third, namely, the power required for achieving the same movement result is one third of that of the rolling screw pair, and the ball screw is very helpful in power saving.

Ball screw is when using, need install one end on the supporting seat, and traditional supporting seat constitutes through having the bearing frame, but because the interior axle of bearing frame is less with the area of contact of lead screw, lacks the limit structure to the lead screw, when the lead screw receives external force to influence, the lead screw inclines easily on the supporting seat, causes the lead screw eccentric when rotating, influences ball screw's normal use effect, and we have proposed an eccentric structure's ball screw bearing structure for this reason and have solved above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a ball screw bearing supporting structure with an eccentric structure, which aims to solve the problems that the traditional supporting seat provided in the background art is formed by a bearing seat, but because the contact area between the inner shaft of the bearing seat and a screw rod is small, a limit structure for the screw rod is lacked, when the screw rod is influenced by external force, the screw rod is easy to incline on the supporting seat, so that the screw rod is eccentric during rotation, and the normal use effect of the ball screw rod is influenced.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a ball screw bearing structure of eccentric structure, includes the supporting seat, the locating hole has been seted up on the top surface of supporting seat, the central point of supporting seat puts the fixedly connected with solid fixed cylinder of department, and the internally mounted of solid fixed cylinder has prevents eccentric mechanism, prevent eccentric mechanism and include the bearing housing, the annular groove has been seted up on the surface of bearing housing, and the internally mounted of annular groove has the axle pearl, the surface of axle pearl contacts with the inner wall of solid fixed cylinder, the central point of bearing housing puts the department and runs through there is the rotation lead screw.

The dustproof mechanism is installed on the front face of the supporting seat and comprises a sealing gasket, a dustproof pad is fixedly connected to the surface of the sealing gasket, an annular groove is formed in the position, corresponding to the sealing gasket, of the surface of the supporting seat, and the sealing gasket is inserted into the annular groove.

Arc grooves are formed in the surface of the dustproof pad and are symmetrically distributed on the left side and the right side of the dustproof pad.

The upper end and the lower end of the positioning hole are both provided with grooves, and the inner diameter of each groove is larger than that of the positioning hole.

The bearing sleeves are provided with two groups, and a stop ring is arranged between the two groups of bearing sleeves.

The surface mounting of retaining ring has the sliding ball, the avris of bearing housing has seted up annular spout with the corresponding position department of sliding ball, and the internal diameter of annular spout and the external diameter looks adaptation of sliding ball.

The inside of bearing housing installs the fixed cover of rubber, and the inner wall of the fixed cover of rubber contacts with the surface of rotating the lead screw.

The surface of the rubber fixing sleeve is provided with inner heat dissipation holes, the central position of the surface of the bearing sleeve is provided with outer heat dissipation holes, and the outer heat dissipation holes are communicated with the inner heat dissipation holes.

Compared with the prior art, the utility model has the beneficial effects that: (1) the device is through being provided with anti-decentration mechanism, compares in traditional structure, and this device increases the atress area that rotates the lead screw through two sets of bearing sleeves that set up, simultaneously, carries on spacingly through the retaining ring to the bearing sleeve, avoids the bearing sleeve to swing when using, influences the rotation that rotates the lead screw, has improved the stability when rotating the lead screw rotation to a certain extent, avoids rotating the lead screw atress uneven in rotating, leads to rotating the eccentric condition of lead screw and takes place.

(2) The device is through setting up dustproof mechanism, outer radiating hole and interior louvre, compare in traditional structure, and this device inserts the surface of establishing at the solid fixed cylinder through seal gasket, and dustproof pad protects the check ring, avoids the inside and the machine oil of dust entering check ring to mix, influences the smooth degree of rotation of smooth pearl, and simultaneously, outer radiating hole and interior louvre mutually support to the heat that produces when rotating the friction of lead screw is evacuated, improves the radiating effect of device.

Drawings

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

FIG. 2 is a schematic three-dimensional blasting diagram of the present invention.

Fig. 3 is a schematic perspective view of the dust-proof mechanism of the present invention.

Fig. 4 is a three-dimensional burst diagram of the anti-eccentricity mechanism of the present invention.

Fig. 5 is a partial perspective view of the anti-eccentricity mechanism of the present invention.

The sequence numbers in the figures illustrate: 1. a supporting seat; 2. positioning holes; 3. a fixed cylinder; 4. rotating the screw rod; 5. a dust-proof mechanism; 51. sealing gaskets; 52. a dust-proof pad; 6. an anti-eccentricity mechanism; 61. a bearing housing; 62. a mandrel bead; 63. an outer heat dissipation aperture; 64. a rubber fixing sleeve; 65. internal heat dissipation holes; 66. a snap ring; 67. and (4) sliding the beads.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, an embodiment of the present invention is shown: the utility model provides a ball screw bearing structure of eccentric structure, including supporting seat 1, locating hole 2 has been seted up on the top surface of supporting seat 1, the central point of supporting seat 1 puts fixedly connected with solid fixed cylinder 3, and the internally mounted of solid fixed cylinder 3 has prevents eccentric mechanism 6, prevent that eccentric mechanism 6 includes bearing housing 61, the annular groove has been seted up on the surface of bearing housing 61, and the internally mounted of annular groove has axle pearl 62, the surface of axle pearl 62 contacts with the inner wall of solid fixed cylinder 3, the central point department of putting of bearing housing 61 runs through there is rotation lead screw 4, through two sets of bearing housings 61 that set up, increase the lifting surface who rotates lead screw 4, stability when rotating lead screw 4 rotates has been improved to a certain extent, avoid rotating lead screw 4 atress inequality in the rotation to cause the eccentric condition of rotation lead screw 4 to take place.

Further, dustproof mechanism 5 is installed on the front of supporting seat 1, dustproof mechanism 5 includes seal gasket 51, seal gasket 51's fixed surface is connected with dustproof pad 52, the annular groove has been seted up with seal gasket 51 corresponding position department in the surface of supporting seat 1, and seal gasket 51 is inserted and is equipped with in the inside of annular groove, insert the surface of establishing at solid fixed cylinder 3 through seal gasket 51, dustproof pad 52 protects stop ring 66, avoid the inside and the machine oil mixture that the dust got into stop ring 66, avoid sliding bead 67 to produce great wearing and tearing when rotating.

Further, the arc recess has been seted up on the surface of dustproof pad 52, and arc recess symmetric distribution is in the left and right sides of dustproof pad 52, and dustproof pad 52 finishes the installation and attaches on the surface of supporting seat 1, and at this moment, the arc recess face through dustproof pad 52 can make things convenient for the staff to stir dustproof pad 52, makes things convenient for the staff to take out dustproof pad 52 and changes.

Further, the recess is all seted up at the upper and lower both ends of locating hole 2, and the internal diameter of recess is greater than the internal diameter of locating hole 2, and when the bolt ran through locating hole 2 and fixes supporting seat 1, the recess on locating hole 2 surface provided for the bolt top and placed the space, avoids the bolt to expose on the surface of supporting seat 1, aesthetic property when influencing the installation of supporting seat 1.

Further, bearing housing 61 is provided with two sets ofly, installs retaining ring 66 between two sets of bearing housings 61, carries on spacingly through retaining ring 66 to bearing housing 61, avoids bearing housing 61 to rock in rotating, influences the stability of bearing housing 61 when the inside rotation of solid fixed cylinder 3, simultaneously, mutually supports through smooth pearl 67 and bearing housing 61 to it is spacing to carry out rotating screw 4, avoids receiving the influence of external force to take place eccentric problem.

Furthermore, the surface of the stop ring 66 is provided with a sliding ball 67, the edge of the bearing sleeve 61 is provided with an annular sliding groove at a position corresponding to the sliding ball 67, the inner diameter of the annular sliding groove is matched with the outer diameter of the sliding ball 67, when the two sets of bearing sleeves 61 rotate, the bearing sleeves 61 drive the sliding ball 67 to rotate, the sliding ball 67 reduces the friction between the bearing sleeves 61 and the stop ring 66 in rotation, and the bearing sleeves 61 are prevented from generating more loss in rotation.

Further, the internally mounted of bearing housing 61 has the fixed cover 64 of rubber, and the inner wall of the fixed cover 64 of rubber contacts with the surface of rotating lead screw 4, and when rotating lead screw 4 installation, the fixed cover 64 of rubber is filled the gap between rotating lead screw 4 and bearing housing 61, avoids rotating lead screw 4 not hard up at the in-process of installation, and simultaneously, the operative installations can be applicable to the rotation lead screw 4 of different bores and use, increases the practicality of device.

Furthermore, an inner heat dissipation hole 65 is formed in the surface of the rubber fixing sleeve 64, an outer heat dissipation hole 63 is formed in the center of the surface of the bearing sleeve 61, the outer heat dissipation hole 63 is communicated with the inner heat dissipation hole 65, and the outer heat dissipation hole 63 is matched with the inner heat dissipation hole 65, so that the contact area between hot air on the surface of the bearing sleeve 61 and outside cold air is increased, and the heat dissipation effect of the bearing sleeve 61 is improved.

The working principle is as follows: when in use, according to the attached drawings 2, 3 and 4, firstly two groups of bearing sleeves 61 are arranged inside the fixed cylinder 3, the two groups of bearing sleeves 61 are isolated and positioned through the stop ring 66, and two groups of sliding balls 67 are arranged on the surface of the stop ring 66, so that the sliding balls 67 are attached between the two groups of bearing sleeves 61, and similarly, the stop ring 66 is arranged on the outer side of the bearing sleeve 61, thereby limiting the position of the bearing sleeve 61, avoiding the bearing sleeve 61 from shaking left and right in the use process, avoiding the position offset of the central point when the rotating screw rod 4 rotates,

at this moment, the rotating screw rod 4 is inserted and installed in the bearing sleeve 61, the surface of the rotating screw rod 4 is wrapped by the rubber fixing sleeve 64 at this moment, the rubber fixing sleeve 64 fills a gap between the rotating screw rod 4 and the bearing sleeve 61, looseness of the rotating screw rod 4 in the installation process is avoided, after the rotating screw rod 4 is installed, the sealing gasket 51 is inserted in the annular groove on the surface of the fixed cylinder 3, at this moment, the dustproof pad 52 is pressed, the dustproof pad 52 applies pressure to the sealing gasket 51, the sealing gasket 51 is fixed on the surface of the fixed cylinder 3, then the surface of the retaining ring 66 is protected by the dustproof pad 52, and dust is prevented from being in the sliding ball 67.

Claims (8)

1. The utility model provides a ball screw bearing structure of eccentric structure, includes supporting seat (1), its characterized in that: locating hole (2) have been seted up on the top surface of supporting seat (1), the central point of supporting seat (1) puts fixedly connected with solid fixed cylinder (3), and the internally mounted of solid fixed cylinder (3) has prevents eccentric mechanism (6), prevent eccentric mechanism (6) including bearing housing (61), the annular groove has been seted up on the surface of bearing housing (61), and the internally mounted of annular groove has axle pearl (62), the surface of axle pearl (62) contacts with the inner wall of solid fixed cylinder (3), the central point of bearing housing (61) puts the department and runs through and has rotated lead screw (4).

2. An eccentrically constructed ball screw bearing support structure according to claim 1, wherein: the dustproof mechanism (5) is installed on the front face of the supporting seat (1), the dustproof mechanism (5) comprises a sealing gasket (51), a dustproof pad (52) is fixedly connected to the surface of the sealing gasket (51), an annular groove is formed in the position, corresponding to the sealing gasket (51), of the surface of the supporting seat (1), and the sealing gasket (51) is inserted into the annular groove.

3. An eccentrically constructed ball screw bearing support structure according to claim 2, wherein: the surface of the dustproof pad (52) is provided with arc-shaped grooves, and the arc-shaped grooves are symmetrically distributed on the left side and the right side of the dustproof pad (52).

4. An eccentrically constructed ball screw bearing support structure according to claim 1, wherein: grooves are formed in the upper end and the lower end of the positioning hole (2), and the inner diameter of each groove is larger than that of the positioning hole (2).

5. An eccentrically constructed ball screw bearing support structure according to claim 1, wherein: the bearing sleeves (61) are provided with two groups, and a stop ring (66) is arranged between the two groups of bearing sleeves (61).

6. An eccentrically constructed ball screw bearing support structure according to claim 5, wherein: the surface mounting of retaining ring (66) has sliding ball (67), annular spout has been seted up to the avris of bearing housing (61) and the corresponding position department of sliding ball (67), and the internal diameter of annular spout and the external diameter looks adaptation of sliding ball (67).

7. An eccentrically constructed ball screw bearing support structure according to claim 1, wherein: the inside of bearing housing (61) is installed rubber fixed cover (64), and the inner wall of rubber fixed cover (64) contacts with the surface of rotating lead screw (4).

8. An eccentrically constructed ball screw bearing support structure according to claim 7, wherein: an inner heat dissipation hole (65) is formed in the surface of the rubber fixing sleeve (64), an outer heat dissipation hole (63) is formed in the center of the surface of the bearing sleeve (61), and the outer heat dissipation hole (63) is communicated with the inner heat dissipation hole (65).

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