CN220944110U - Driving structure with adjustable bearing capacity of Y-axis workbench screw rod for high-gloss machine - Google Patents

Abstract

The utility model relates to the technical field of high-speed machines, in particular to a driving structure with adjustable bearing capacity of a screw rod of a Y-axis workbench for a high-speed machine, which comprises a screw rod driven by a servo motor, and also comprises an adjusting mechanism, wherein the adjusting mechanism comprises a mounting seat, a pre-tightening assembly and a locking assembly, the pre-tightening assembly and the servo motor are respectively arranged at two ends of the mounting seat, and the pre-tightening assembly is in sealed sliding fit with the screw rod; a pairing bearing is coaxially arranged between the mounting seat and the screw rod, and a clearance b is arranged between the outer rings of the pairing bearings; the inner ring of the matched bearing is fastened through the locking component, and the pre-tightening component pushes the outer ring of the matched bearing to adjust the pre-tightening force of the screw rod, so that the screw rod stably bears a load, and meanwhile, the transmission precision of the screw rod is ensured.

Description

Driving structure with adjustable bearing capacity of Y-axis workbench screw rod for high-gloss machine

Technical Field

The utility model relates to the technical field of high-speed machines, in particular to a driving structure with adjustable bearing capacity of a Y-axis workbench screw rod for a high-speed machine.

Background

The highlight machine is similar to an engraving machine in appearance, the main shaft is an air floatation main shaft, when a product is processed, the mirror surface effect is achieved, no knife lines are visible, and the highlight machine is commonly used for precisely cutting nonferrous metals such as aluminum, copper alloy decorative sheets, IT decorative sheets, acrylic and the like. The workbench on the existing high-speed machine is driven by a screw nut mechanism driven by a servo motor and moves along a Y axis, two ends of the screw are in a rotation fixed mode, and the axial load born by the screw is a single fixed value. However, the screw is excessively tightly assembled, so that the servo motor cannot drive the screw to rotate; too loose assembly of the screw can affect the transmission accuracy of the screw.

Therefore, there is a need to design a driving mechanism that is stable and reliable and that can axially pretension an adjusting screw.

Disclosure of utility model

The utility model aims to overcome the defects and the shortcomings in the prior art, and provides a driving structure with adjustable bearing capacity of a screw rod of a Y-axis workbench for a high-gloss machine.

In order to achieve the above purpose, the utility model provides a driving structure with adjustable bearing capacity of a Y-axis workbench screw rod for a high-light machine, which comprises a screw rod driven by a servo motor, and further comprises an adjusting mechanism, wherein the adjusting mechanism comprises a mounting seat, a pre-tightening assembly and a locking assembly, the pre-tightening assembly and the servo motor are respectively arranged at two ends of the mounting seat, and the pre-tightening assembly is in sealing sliding fit with the screw rod; a pairing bearing is coaxially arranged between the mounting seat and the screw rod, and a clearance b is arranged between the outer rings of the pairing bearing; the outer ring of the pairing bearing is embedded into the mounting seat, the pretightening force of the screw rod is pushed and adjusted through the pretightening assembly, and the inner ring of the pairing bearing is fastened through the locking assembly.

Further, the paired bearings are two thrust ball bearings.

Further, the outer ring of the paired bearings is in interference fit with the mounting seat.

Further, the pre-tightening assembly comprises a gland, an adjusting gap a is arranged between the gland and the end face of the mounting seat, and a sealing ring is arranged between the gland and the screw rod; the outer end of the gland is provided with a flange, and the inner end of the gland is provided with a convex ring; the convex ring is embedded into the mounting seat in a sliding manner and is abutted with the outer ring of the matched bearing; the flange and the gland are integrally bolted on the mounting seat through bolts; the bolt is in threaded connection with the gland.

Further, the value of the adjustment gap a is not smaller than the value of the play b.

Further, the locking assembly sequentially comprises a shaft shoulder, a sleeve and a plurality of locking nuts; the shaft shoulder is integrally arranged on the screw rod; the inner ring of the matched bearing is positioned between the shaft shoulder and the sleeve; the sleeve is in coaxial clearance fit with the lead screw; the lock nut is in threaded connection with the screw rod.

Further, the sealing ring is positioned between the shaft shoulder and the gland.

Further, a cavity is arranged in the mounting seat, an opening is arranged at the top of the cavity, and a matched top cover is bolted at the position of the opening; the screw rod is connected with the output end of the servo motor through a coupler, and the locking assembly and the coupler are both positioned in the cavity.

Compared with the prior art, the utility model has the beneficial effects that: the matched bearings are adopted, the clearance b is arranged between the outer rings of the matched bearings, the outer rings of the matched bearings are pushed by the pre-tightening assembly, the purpose of pre-tightening and adjusting the screw rod is achieved, the output ends of the screw rod and the servo motor are ensured to stably bear axial loads, and meanwhile, the transmission precision of the screw rod is improved.

Drawings

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

Wherein: 1. a mounting base; 2. a screw rod; 3. a pretension assembly; 4. a locking assembly; 5. pairing bearings; 11. a cavity; 12. a top cover; 13. a servo motor; 21. a shaft shoulder; 31. a flange; 32. a gland; 33. and (3) sealing rings.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Examples

Referring to fig. 1, the utility model provides a driving structure with adjustable bearing capacity of a lead screw of a Y-axis workbench for a high-gloss machine, which comprises a lead screw 2 driven by a servo motor 13, and also comprises an adjusting mechanism, wherein the adjusting mechanism comprises a mounting seat 1, a pre-tightening assembly 3 and a locking assembly 4, the pre-tightening assembly 3 and the servo motor 13 are respectively arranged at two ends of the mounting seat 1, and the pre-tightening assembly 3 is in sealing sliding fit with the lead screw 2; a pairing bearing 5 is coaxially arranged between the mounting seat 1 and the screw rod 2, and a clearance b is arranged between the outer rings of the pairing bearing 5; the inner ring of the matched bearing 5 is fastened through the locking component 4, the outer ring of the matched bearing 5 is embedded into the mounting seat 1 and pushes the pre-tightening force of the adjusting screw rod 2 through the pre-tightening component 3, so that the pre-tightening force of the screw rod 2 is adjusted, the servo motor 13 and the screw rod 2 can stably bear axial load, and the reciprocating precision of nuts matched with the screw rod 2 is ensured. The whole structure is simple, and the installation and the disassembly are convenient.

The paired bearings 5 may be thrust ball bearings or angular contact ball bearings with two numbers, and in view of the play b set between the outer rings of the paired bearings 5, they may be ordered for outsourcing, which is not described in detail.

As an embodiment of the utility model, the outer ring of the paired bearing 5 is in interference fit with the mounting seat 1, so that the pre-tightening assembly 3 can slowly adjust the outer ring of the paired bearing 5 to achieve a proper pre-tightening state of the screw rod 2, and the transmission precision and the operation stability are ensured.

As one embodiment of the utility model, the pretension component 3 comprises a gland 32, an adjusting gap a is arranged between the gland 32 and the end surface of the mounting seat 1, and a sealing ring 33 is arranged between the gland 32 and the screw rod 2; the outer end of the gland 32 is provided with a flange 31, and the inner end is provided with a convex ring; the convex ring is slidably embedded into the mounting seat 1 and is abutted with the outer ring of the matched bearing 5; the flange 31 and the gland 32 are integrally bolted to the mount 1 by bolts which are screwed to the gland 32. The sealing ring 33 is preferably a dustproof sealing ring, so that foreign matters can be prevented from entering the mounting seat 1 to pollute and erode the matched bearing 5 and the servo motor 13, and the service life and the transmission precision are further ensured.

The value of the adjustment gap a is preferably not smaller than the value of the play b.

As an embodiment of the present utility model, the locking assembly 4 sequentially includes a shoulder 21, a sleeve 41 and a plurality of locking nuts 42; the shaft shoulder 21 is integrally arranged on the screw rod 2; the inner ring of the mating bearing 5 is positioned between the shaft shoulder 21 and the sleeve 41; the sleeve 41 is in coaxial clearance fit with the screw rod 2; the lock nut 42 is screwed with the screw shaft 2. The loosening purpose is achieved by a plurality of lock nuts 42, so that the inner ring of the mating bearing 5 is reliably fastened.

On the basis of the above-described embodiment of the pretension assembly 3, a sealing ring 33 may be located between the shoulder 21 and the gland 32.

In addition, a cavity 11 is arranged in the mounting seat 1, an opening is arranged at the top of the cavity 11, and a matched top cover 12 is bolted at the position of the opening; the output end of the screw rod 2 and the output end of the servo motor 13 are connected through a coupler, and the locking assembly 4 and the coupler are conveniently installed in the cavity 11 through the cavity 11 and the opening, so that the convenience of assembly is improved.

When the screw rod 2 is used, the mounting seat 1 is bolted and fixed on the lathe bed of a high-gloss machine, bolts on the flange 31 are screwed on the same high-gloss machine according to different workpieces, the gland 32 moves against the outer ring of the matched bearing 5 through the convex ring, the clearance b is gradually reduced, the pretightening force of the screw rod 2 is gradually adjusted until the machining precision of the corresponding workpieces is met, the whole structure is simple, the use is convenient, and the stable operation of the screw rod 2 is ensured.

The present utility model may be summarized in other specific forms without departing from the spirit or essential characteristics thereof. The above-described embodiments of the utility model are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (4)

1. The driving structure with adjustable bearing capacity of the Y-axis workbench screw rod for the high-gloss machine comprises a screw rod (2) driven by a servo motor (13), and is characterized by further comprising an adjusting mechanism, wherein the adjusting mechanism comprises a mounting seat (1), a pre-tightening assembly (3) and a locking assembly (4), the pre-tightening assembly (3) and the servo motor (13) are respectively arranged at two ends of the mounting seat (1), and the pre-tightening assembly (3) is in sealing sliding fit with the screw rod (2); a pairing bearing (5) is coaxially arranged between the mounting seat (1) and the screw rod (2), and a clearance b is arranged between the outer rings of the pairing bearing (5); the outer ring of the pairing bearing (5) is embedded into the mounting seat (1) and pushes and adjusts the pretightening force of the screw rod (2) through the pretightening assembly (3), and the inner ring of the pairing bearing (5) is fastened through the locking assembly (4); the paired bearings (5) are two thrust ball bearings; and the outer ring of the paired bearing (5) is in interference fit with the mounting seat (1).

2. The driving structure with adjustable bearing capacity of the Y-axis workbench screw rod for the high-speed machine according to claim 1, wherein the pre-tightening assembly (3) comprises a gland (32), an adjusting gap a is arranged between the gland (32) and the end face of the mounting seat (1), and a sealing ring (33) is arranged between the gland (32) and the screw rod (2); the outer end of the gland (32) is provided with a flange (31), and the inner end of the gland is provided with a convex ring; the convex ring is embedded into the mounting seat (1) in a sliding manner and is abutted with the outer ring of the matched bearing (5); the flange (31) and the gland (32) are integrally bolted on the mounting seat (1) through bolts; the bolt is in threaded connection with the gland (32).

3. The driving structure of claim 2, wherein the value of the adjustment gap a is not smaller than the value of the play b.

4. The driving structure with adjustable bearing capacity for the Y-axis workbench screw rod for the high-speed machine according to claim 3, wherein the locking assembly (4) sequentially comprises a shaft shoulder (21), a sleeve (41) and a plurality of locking nuts (42); the shaft shoulder (21) is integrally arranged on the screw rod (2); the inner ring of the matched bearing (5) is positioned between the shaft shoulder (21) and the sleeve (41); the sleeve (41) is in coaxial clearance fit with the screw rod (2); the locking nut (42) is in threaded connection with the screw rod (2).