CN212183373U - High-precision permanent magnet stepping motor pole plate structure - Google Patents

Abstract

The utility model provides a high accuracy permanent magnet stepping motor polar plate structure, the excircle of permanent magnet stepping motor polar plate have the constant head tank of moulding plastics of two relative centre of a circle symmetries, and there is the polar plate tooth that makes progress to roll up, its characterized in that at the middle part: the excircle of the pole plate of the permanent magnet stepping motor is also provided with two pole plate feeding process grooves which are symmetrical relative to the circle center. The utility model provides the high conformity, the stability of constant head tank and polar plate tooth relative position degree precision of moulding plastics to improve complete machine step angle precision.

Description

High-precision permanent magnet stepping motor pole plate structure

Technical Field

The utility model relates to a structure of high accuracy permanent magnet stepping motor polar plate.

Background

As shown in fig. 1 and 2, the outer circle of the pole plate a of the permanent magnet stepping motor in the prior art has two injection molding positioning slots B symmetrical relative to the circle center for radial positioning when the pole plate is injection molded in the later period, and the middle part of the pole plate a has pole plate teeth C folded upwards.

When a pole plate a progressive die is designed, in order to meet the requirements of a material strip blanking process step, the positioning groove B of the outer circle is finally punched out, as shown in fig. 3, the pole plate blanking process flow in the prior art comprises the following steps: 1'): punching a guide hole; 2'): performing an idle step; 3'): punching a pilot hole for 2 times; 4'): punching pole plate teeth C; 5'): c folding the pole plate teeth to form 45 degrees; 6'): c folding the pole plate teeth to form 90 degrees; 7'): punching small holes; 8'): performing an idle step; 9'): cutting the shape; 10'): performing an idle step; 11'): performing an idle step; 12'): and punching the injection molding positioning groove B and discharging the part.

Because constant head tank B and polar plate tooth C of moulding plastics do not punch in same process step simultaneously, lead to moulding plastics constant head tank B and polar plate tooth C relative position degree to appear certain volatility. The fluctuation can reduce the overall step angle precision of the stepping motor, reduce the effective torque of the motor and can not meet the use requirement of a high-precision mechanism.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high accuracy permanent magnet stepping motor polar plate structure, its purpose is solved prior art's shortcoming, improves the compliance, the stability of the constant head tank of moulding plastics and polar plate tooth relative position degree precision to improve complete machine step angle precision.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a high accuracy permanent magnet stepping motor polar plate structure, the excircle of permanent magnet stepping motor polar plate has the constant head tank of moulding plastics of two relative centre of a circle symmetries, and the middle part has the polar plate tooth that upwards rolls up, its characterized in that:

the excircle of the pole plate of the permanent magnet stepping motor is also provided with two pole plate feeding process grooves which are symmetrical relative to the circle center.

The utility model discloses an useful part lies in:

the utility model discloses increase 2 polar plates in addition on the polar plate external diameter and walk material technology groove, satisfy blanking process step demand. When the mold is designed, the injection molding positioning groove and the pole plate teeth are simultaneously punched out in the same process step. The process and the precision of the stamping die ensure the conformity and the stability of the precision of the relative position degree of the injection molding positioning groove and the pole plate tooth, and the precision of the whole machine step angle is improved.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a top view block diagram of a prior art plate;

FIG. 2 is a perspective view of a prior art plate;

FIG. 3 is a flow chart of a prior art pole plate blanking process;

FIG. 4 is a top view of the polar plate of the present invention;

FIG. 5 is a three-dimensional structure diagram of the polar plate of the present invention;

fig. 6 is a flow chart of the pole plate blanking process of the present invention.

Detailed Description

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained according to the drawings without inventive labor. In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "upper", "lower", "inner", "outer", "bottom", and the like as used herein are used in the description to indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 4 and 5:

the excircle of the permanent magnet stepping motor pole plate A is provided with two injection molding positioning grooves B which are symmetrical relative to the circle center and used for radial positioning of the pole plate in the later period, the middle part of the pole plate A is provided with pole plate teeth C which are folded upwards, and the excircle of the permanent magnet stepping motor pole plate A is also provided with two pole plate feeding process grooves D which are symmetrical relative to the circle center.

The utility model discloses when polar plate A die stamping machine design, constant head tank B and polar plate tooth C of moulding plastics are simultaneously washed out on same process step, and the polar plate is walked material process groove D and is washed out at last, as shown in FIG. 6 (the reference numeral indicates the position of process step at die stamping machine), the utility model discloses polar plate blanking process step also is the process step flow and is: 1): punching a guide hole; 2): punching small holes; 3): performing an idle step; 4): simultaneously blanking pole plate teeth C and injection molding positioning grooves B; 5): performing an idle step; 6): c folding the pole plate teeth to form 45 degrees; 7): c folding the pole plate teeth to form 90 degrees; 8): shaping; 9): cutting the shape; 10): performing an idle step; 11): performing an idle step; 12): and punching a polar plate feeding process groove D and discharging the part.

The utility model discloses increase 2 polar plates in addition on polar plate A external diameter and walk material technology groove D, satisfy blanking process step demand. And the injection molding positioning groove B and the pole plate teeth C are punched out simultaneously in the same process step, and the pole plate feeding process groove D is punched out finally. Thus, the accuracy of the relative position degree of the injection molding positioning groove B and the polar plate tooth C is ensured to be consistent and stable, and the accuracy of the whole machine step angle is improved and promoted.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (1)

1. The utility model provides a high accuracy permanent magnet stepping motor polar plate structure, the excircle of permanent magnet stepping motor polar plate has the constant head tank of moulding plastics of two relative centre of a circle symmetries, and the middle part has the polar plate tooth that upwards rolls up, its characterized in that:

the excircle of the pole plate of the permanent magnet stepping motor is also provided with two pole plate feeding process grooves which are symmetrical relative to the circle center.

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