Lengthening structure of gear at output end of motor

Abstract

The utility model relates to the field of numerical control center tool equipment, in particular to a lengthening structure of a motor output end gear, which comprises a driving gear, the driving gear and a lengthening shaft are fixed into a whole through a clasping ring, and the lengthening shaft and a motor shaft are fixed into a whole through a clasping ring. The lengthening shaft is supported on the bearing seat through a bearing, and when the motor shaft rotates, the lengthening shaft and the driving gear synchronously rotate with the motor shaft. According to the utility model, the lengthened shaft and the motor shaft are locked together, so that the driving gear can be suspended out of the position of the motor shaft, and the position of the driven gear meshed with the driving gear can be conveniently arranged. In the structure, the bearing support is additionally arranged on the outer side of the lengthened shaft, the bearing is supported through the bearing seat, the bounce range of the end of the driving gear is guaranteed through the bearing support, and the rotation precision of the driving gear is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to numerical control center frock equipment technical field especially relates to a lengthening structure of motor output end gear. BACKGROUND

[0002] Four-axis rotary table has become indispensable functional parts on numerical control machining center. At present, the power input of most four-axis rotary tables on the market adopts motor transmission, a driving gear is locked at the motor shaft end, and the rotation of the four-axis rotary table is realized through the meshing of the driving gear and the driven gear.

[0003] For the four-axis rotary table of special structure, when the position of the driving gear is staggered with the position of the driven gear, the motor shaft needs to be lengthened. The farther the driving gear overhangs from the motor shaft after lengthening, the greater the tooth surface runout of the driving gear, which directly affects the meshing accuracy between the driving gear and the driven gear. INVENTION CONTENTS

[0004] The utility model discloses a lengthening structure of motor output end gear to solve the shortcomings in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A lengthening structure of motor output end gear, comprising a driving gear, the driving gear is fixed into an integral whole with a lengthening shaft through a clamping ring, and the lengthening shaft is fixed into an integral whole with a motor shaft through a clamping ring.

[0007] The lengthening shaft is supported on a bearing seat through a bearing, and when the motor shaft rotates, the lengthening shaft rotates synchronously with the driving gear and the motor shaft.

[0008] Preferably, the bearing seat is mounted and fixed on the input motor.

[0009] Preferably, the lengthening shaft is divided into three sections, the diameters of the three sections are reduced in a stepped manner from the inner end to the outer end, and the middle section of the lengthening shaft is mounted on the bearing seat through a bearing.

[0010] Preferably, the inner end of the lengthening shaft is fixed with the motor shaft through the clamping ring, and the outer end of the lengthening shaft is fixed with the driving gear through the clamping ring.

[0011] Preferably, the number of bearings on the bearing seat is at least one.

[0012] The utility model has the advantages of:

[0013] In the utility model, the lengthening shaft and the motor shaft are locked together, this structure can make the driving gear overhang outside the position of the motor shaft, and the position of the driven gear meshing with the driving gear is conveniently arranged.

[0014] In the structure, the bearing support is added outside the lengthened shaft, the bearing is supported through the bearing seat, and the support of the bearing guarantees the runout range of the end of the driving gear and ensures the rotation accuracy at the driving gear. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A structure diagram of a lengthened structure of a motor output end gear is provided in the utility model.

[0016] Figure 2 To Figure 1 A sectional view of A-A.

[0017] In the drawing: 1, driving gear; 2, bearing; 3, lengthened shaft; 4, bearing seat; 5, motor shaft; 6, clamping ring. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0019] Referring to Figures 1-2 A lengthened structure of a motor output end gear, comprising a driving gear 1, the driving gear 1 is fixed into an integral whole with a lengthened shaft 3 through a clamping ring 6, and the lengthened shaft 3 is fixed into an integral whole with a motor shaft 5 through the clamping ring 6.

[0020] The lengthened shaft 3 is supported on a bearing seat 4 through a bearing 2, and when the motor shaft 5 rotates, the lengthened shaft 3 rotates synchronously with the motor shaft 5 and the driving gear 1.

[0021] The bearing seat 4 is installed and fixed on an input motor, and the number of bearings on the bearing seat 4 is at least one.

[0022] The lengthened shaft 3 is divided into three sections, the diameters of the three sections are reduced in a stepped manner from the inside end to the outside end, the middle section of the lengthened shaft 3 is installed on the bearing seat 4 through the bearing 2, the inside end of the lengthened shaft 3 is fixed with the motor shaft 5 through the clamping ring 6, and the outside end of the lengthened shaft 3 is fixed with the driving gear 1 through the clamping ring 6.

[0023] In the embodiment, the driving gear 1 is fixed into an integral whole with the lengthened shaft 3 through the clamping ring 6, and the lengthened shaft 3 is fixed into an integral whole with the motor shaft 5 through the clamping ring 6.

[0024] The lengthened shaft 3 is supported on the bearing seat 4 through the bearing 2, and when the motor shaft 5 rotates, the bearing seat 4 is fixed, and the lengthened shaft 3 rotates together with the motor shaft 5 and the driving gear 1.

[0025] The structure relates to a lengthened gear shaft structure, which is different from the connection mode of a conventional motor and a driving gear, and the driving gear is not directly sleeved on the motor shaft but is locked with the motor shaft through a lengthened shaft.

[0026] In the utility model, the structure can make the driving gear 1 overhang outside the motor shaft 5 position, and facilitate the arrangement of the driven gear engaged with the driving gear 1. Meanwhile, because the overhanging position of the driving gear 1 is longer, the end of the driving gear 1 has larger jumping relative to the motor position, in the structure, the bearing 2 is supported outside the lengthened shaft 3, the bearing 2 is supported through the bearing seat 4, and the support of the bearing 2 ensures the jumping range of the end of the driving gear 1 and ensures the rotation precision of the driving gear 1.

[0027] The above is only the preferred specific implementation mode of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, and all should be covered in the protection scope of the utility model.

Claims

1. An elongated structure of a gear at an output end of an electric motor, comprising a driving gear (1), characterized in that, The driving gear (1) is fixed with the lengthened shaft (3) through the embracing ring (6), and the lengthened shaft (3) is fixed with the motor shaft (5) through the embracing ring (6); The lengthened shaft (3) is supported on the bearing seat (4) through the bearing (2), and when the motor shaft (5) rotates, the lengthened shaft (3) rotates synchronously with the driving gear (1) and the motor shaft (5).

2. The lengthened structure of the gear at the output end of an electric motor according to claim 1, characterized in that, The bearing seat (4) is fixedly installed on the input motor.

3. The extended structure of the gear at the output end of an electric motor according to claim 1, characterized in that, The lengthened shaft (3) is divided into three sections, the diameters of the three sections are reduced in a stepped manner from the inner end to the outer end, and the middle section of the lengthened shaft (3) is installed on the bearing seat (4) through the bearing (2).

4. The extension structure of the gear at the output end of an electric motor according to claim 3, wherein The inner end of the lengthened shaft (3) is fixed with the motor shaft (5) through the embracing ring (6), and the outer end of the lengthened shaft (3) is fixed with the driving gear (1) through the embracing ring (6).

5. The lengthened structure of a gear at an output end of an electric motor according to claim 1, wherein The number of bearings on the bearing seat (4) is at least one.

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