Rough turning clamp for outer edge of inner shell of thin-wall motor shell

Abstract

The utility model relates to the technical field of motor machining, in particular to a thin-wall motor shell inner shell outer edge rough turning clamp which comprises a flange plate, a transmission rod, an inner support and an expansion sleeve. A central through hole penetrating through the two sides is formed in the flange plate, and one end of the transmission rod penetrates through the central through hole and is fixedly connected with the inner end of the inner support; the inner support is arranged on the inner side of the expansion sleeve; the inner support is of a circular-truncated-cone-shaped structure with the thick near end and the thin far end. An inner cavity of the expansion sleeve is of a circular-truncated-cone-shaped structure with the thick near end and the thin far end. The inner support is matched with the inner cavity of the expansion sleeve; the other end of the transmission rod is used for being connected with power equipment moving linearly. According to the outer edge rough turning clamp for the inner shell of the thin-wall motor shell, the inner shell of the thin-wall motor shell is arranged on the outer side of the expansion sleeve, the inner support drives the expansion sleeve to move in the radial direction from inside to outside so as to clamp the inner shell of the thin-wall motor shell, and the mode of applying clamping force from inside to outside has the stable clamping effect; and the inner shell of the thin-wall motor can be prevented from being deformed in the clamping and machining processes.

Description

Technical Field

[0001] The utility model relates to the technical field of motor processing, and particularly relates to a rough turning fixture for the outer edge of the inner shell of a thin-walled motor shell. Background Art

[0002] With the development of motor technology, thin-walled motors have been widely used in various industries. The inner shell of a thin-walled motor has a small thickness, and during the processing of the inner shell, a special fixture is required to clamp the inner shell and then process the outer edge of the inner shell.

[0003] In the prior art, a fixture is usually set to clamp and fix the shell of a thin-walled motor to facilitate the processing of the shell of the thin-walled motor. For example, Chinese Patent CN205765116U discloses a milling fixture for a thin-walled motor shell. This patent clamps the outside of the motor shell by setting four claws. This kind of fixture directly clamps the outer edge of the motor shell, and it is easy to cause the deformation of the shell after clamping and cannot process the outer edge of the shell. Summary of the Utility Model

[0004] Aiming at the technical problem that in the prior art, the conventional fixture cannot process the outer edge of the shell after clamping and is easy to cause the deformation of the shell, the utility model provides a rough turning fixture for the outer edge of the inner shell of a thin-walled motor shell.

[0005] The technical solution for the utility model to solve the above technical problems is as follows:

[0006] A rough turning fixture for the outer edge of the inner shell of a thin-walled motor shell includes: a flange, a transmission rod, an inner support and an expansion sleeve; a central through hole penetrating both sides is opened on the flange, one end of the transmission rod passes through the central through hole and is fixedly connected to the inner end of the inner support; the inner support is arranged inside the expansion sleeve; the inner support is arranged in a frustum-shaped structure with a thick proximal end and a thin distal end; the inner cavity of the expansion sleeve is arranged in a frustum-shaped structure with a thick proximal end and a thin distal end; the inner support matches the inner cavity of the expansion sleeve; the other end of the transmission rod is used for connecting a power device for linear motion.

[0007] Further: the expansion sleeve is arranged in a cylindrical structure; strip-shaped openings are uniformly opened on the expansion sleeve.

[0008] Further: an annular limiting groove is opened at the distal end of the inner support; an annular limiting protrusion is arranged at the distal end of the inner cavity of the expansion sleeve; the annular limiting protrusion is arranged in the annular limiting groove; the width of the annular limiting groove is 1.3 mm - 2 mm larger than the width of the annular limiting protrusion.

[0009] Further: it further includes: positioning blocks; a plurality of the positioning blocks are fixed on the distal side of the flange; the plurality of the positioning blocks are uniformly distributed; the positioning blocks are used for cooperating with the proximal end of the inner shell of the thin-walled motor shell.

[0010] Further, three positioning blocks are provided.

[0011] The rough turning fixture for the outer edge of the inner shell of the thin-walled motor housing provided by the utility model has at least the following beneficial effects or advantages:

[0012] For the rough turning fixture for the outer edge of the inner shell of the thin-walled motor housing provided by the utility model, a central through hole penetrating both sides is provided on the flange plate, and one end of the transmission rod passes through the central through hole and is fixedly connected to the inner end of the inner support; the inner support is arranged inside the expansion sleeve; the inner support is arranged in a frustum-shaped structure with a thick proximal end and a thin distal end; the inner cavity of the expansion sleeve is arranged in a frustum-shaped structure with a thick proximal end and a thin distal end; the inner support matches the inner cavity of the expansion sleeve; the other end of the transmission rod is used to connect a power device for linear motion. For this rough turning fixture for the outer edge of the inner shell of the thin-walled motor housing, the inner shell of the thin-walled motor housing is arranged outside the expansion sleeve, and the inner support drives the expansion sleeve to move radially from the inside to the outside to clamp the inner shell of the thin-walled motor. This way of applying the clamping force from the inside to the outside not only has a stable clamping effect, but also can prevent the inner shell of the thin-walled motor from deforming during the clamping and processing processes. Description of the Drawings

[0013] Figure 1 Schematic structural diagram of the rough turning fixture for the outer edge of the inner shell of the thin-walled motor housing provided by the embodiment of the utility model;

[0014] Figure 2 Schematic structural diagram of the inner support provided by the embodiment of the utility model;

[0015] Figure 3 Schematic structural diagram of the expansion sleeve provided by the embodiment of the utility model;

[0016] Figure 4 Schematic diagram of the working state of the rough turning fixture for the outer edge of the inner shell of the thin-walled motor housing provided by the embodiment of the utility model.

[0017] In the drawings, the list of components represented by each reference numeral is as follows:

[0018] 1 - transmission rod, 2 - flange plate, 3 - inner support, 31 - annular limiting groove, 4 - expansion sleeve, 41 - annular limiting protrusion, 42 - strip-shaped opening, 5 - positioning block, 6 - inner shell of the thin-walled motor housing. Detailed Embodiment

[0019] Aiming at the technical problem in the prior art that the conventional fixture cannot machine the outer edge of the housing after clamping and is prone to cause deformation of the housing, the utility model provides a rough turning fixture for the outer edge of the inner shell of the thin-walled motor housing.

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0021] See Figures 1 - 3 , an outer edge rough turning fixture for the inner shell of a thin-walled motor housing is provided in an embodiment of the present utility model, including: a flange 2, a transmission rod 1, an inner support 3, and a expansion sleeve 4. Among them, a central through hole penetrating both sides is provided on the flange 2, and the inner diameter of the central through hole is slightly larger than the maximum outer diameter of the transmission rod 1; one end of the transmission rod 1 passes through the central through hole and is fixedly connected to the inner end of the inner support 3. The inner support 3 is arranged inside the expansion sleeve 4; the inner support 3 is arranged in a frustum-shaped structure with a thick proximal end and a thin distal end; the inner cavity of the expansion sleeve 4 is arranged in a frustum-shaped structure with a thick proximal end and a thin distal end; the inner support 3 matches the inner cavity of the expansion sleeve 4; the expansion sleeve 4 is arranged in a cylindrical structure; strip-shaped openings 42 are evenly distributed on the expansion sleeve 4. The other end of the transmission rod 1 is used to connect a power device for linear motion, and the power device can adopt a cylinder or a hydraulic cylinder, etc.

[0022] See Figures 1 - 3 , a circular limiting groove 31 is provided at the distal end of the inner support 3; a circular limiting protrusion 41 is provided at the distal end of the inner cavity of the expansion sleeve 4; the circular limiting protrusion 41 is arranged in the circular limiting groove 31; the width of the circular limiting groove 31 is 1.3 mm - 2 mm larger than the width of the circular limiting protrusion 41 (in this embodiment, 1.5 mm is adopted). The width of the circular limiting groove 31 refers to the width of the circular limiting groove 31 in the axial direction of the inner support 3, and the width of the circular limiting protrusion 41 refers to the width of the circular limiting protrusion 41 in the axial direction of the expansion sleeve 4. The width difference between the width of the circular groove and the width of the circular limiting protrusion 41 is the maximum movement distance of the inner support 3 relative to the expansion sleeve 4 in the axial direction. In this embodiment, the matching circular limiting groove 31 and circular limiting protrusion 41 are provided to enable the inner support 3 to move axially relative to the expansion sleeve 4 on the basis of ensuring the engagement between the inner support 3 and the expansion sleeve 4.

[0023] To further ensure the accurate positioning of the outer edge rough turning fixture for the inner shell of the thin-walled motor housing when clamping the inner shell 6 of the thin-walled motor housing, a preferred embodiment of the present utility model further provides: a positioning block 5; in this embodiment, three positioning blocks 5 are provided, and the three positioning blocks 5 are fixed on the distal side of the flange; the three positioning blocks 5 are evenly distributed; the positioning block 5 cooperates with the proximal end of the inner shell of the thin-walled motor housing.

[0024] See Figure 4, the working process of the rough turning fixture for the outer edge of the inner shell of the thin-walled motor housing provided by the embodiment of the present utility model is as follows: During work, the expansion sleeve 4 is placed inside the inner shell 6 of the thin-walled motor housing. Control the power device to drive the transmission rod 1 to move from the proximal side to the distal side. The transmission rod 1 drives the inner support 3 to move synchronously. During the forward movement of the inner support 3, it drives the expansion sleeve 4 to expand outward, thereby realizing the clamping of the inner shell 6 of the thin-walled motor housing. Subsequently, the outer edge of the inner shell 6 of the thin-walled motor housing can be processed. After the processing is completed, control the power device to drive the transmission rod 1 to move from the distal side to the proximal side, and then remove the inner shell 6 of the thin-walled motor housing from the expansion sleeve 4.

[0025] The rough turning fixture for the outer edge of the inner shell of the thin-walled motor housing provided by the embodiment of the present utility model at least has the following beneficial effects or advantages:

[0026] For the rough turning fixture for the outer edge of the inner shell of the thin-walled motor housing provided by the embodiment of the present utility model, a central through hole penetrating both sides is provided on the flange plate. One end of the transmission rod passes through the central through hole and is fixedly connected to the inner end of the inner support; the inner support is arranged inside the expansion sleeve; the inner support is arranged in a frustum-shaped structure with a thick proximal end and a thin distal end; the inner cavity of the expansion sleeve is arranged in a frustum-shaped structure with a thick proximal end and a thin distal end; the inner support matches the inner cavity of the expansion sleeve; the other end of the transmission rod is used to connect a linear motion power device. For this rough turning fixture for the outer edge of the inner shell of the thin-walled motor housing, the inner shell of the thin-walled motor housing is arranged outside the expansion sleeve. The inner support drives the expansion sleeve to move radially from the inside to the outside, thereby clamping the inner shell of the thin-walled motor. This way of applying the clamping force from the inside to the outside not only has a stable clamping effect but also can prevent the inner shell of the thin-walled motor from deforming during the clamping and processing processes.

[0027] In the description of the present utility model, it should be noted that for the term nouns in each embodiment, such as "upper", "lower", "front", "rear", "left", "right", etc., which indicate directions, they are only used to simplify the description of the positional relationship based on the drawings in the specification, and do not represent that the indicated elements and devices, etc. must be operated according to the specific directions and limited operations and methods, and structures described in the specification. Such direction nouns do not constitute a limitation to the present utility model.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood in combination with specific situations.

[0029] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A rough turning fixture for the outer edge of the inner housing of a thin-walled motor housing, characterized in that: Comprising: A flange, a transmission rod, an inner support and an expansion sleeve; a central through hole penetrating both sides is formed on the flange, one end of the transmission rod passes through the central through hole and is fixedly connected to the inner end of the inner support; the inner support is arranged inside the expansion sleeve; the inner support is arranged in a frustum-shaped structure with a thick proximal end and a thin distal end; the inner cavity of the expansion sleeve is arranged in a frustum-shaped structure with a thick proximal end and a thin distal end; the inner support matches the inner cavity of the expansion sleeve; the other end of the transmission rod is used to connect a linear motion power device.

2. The rough turning fixture for the outer edge of the inner housing of the thin-walled motor housing according to claim 1, characterized in that: The expansion sleeve is arranged in a cylindrical structure; strip-shaped openings are formed on the expansion sleeve and are evenly distributed.

3. The rough turning fixture for the outer edge of the inner housing of the thin-walled motor housing according to claim 2, wherein: An annular limiting groove is formed at the distal end of the inner support; an annular limiting protrusion is arranged at the distal end of the inner cavity of the expansion sleeve; the annular limiting protrusion is arranged in the annular limiting groove; the width of the annular limiting groove is 1.3 mm - 2 mm larger than the width of the annular limiting protrusion.

4. The rough turning fixture for the outer edge of the inner housing of the thin-walled motor housing according to claim 3, wherein: Further comprising: Positioning blocks; a plurality of the positioning blocks are fixed on the distal side of the flange; the plurality of positioning blocks are evenly distributed; the positioning blocks are used to cooperate with the proximal end of the inner shell of the thin-walled motor housing.

5. The rough turning fixture for the outer edge of the inner housing of the thin-walled motor housing according to claim 4, characterized in that: The positioning blocks are arranged in three.

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