JPS60257760A - Linear pulse motor - Google Patents

Abstract

PURPOSE:To improve the performance of a linear pulse motor by forming a slider core so that the outer race of a bearing is projected from the back surface of a slider and grinding the bearing in contact, thereby readily and accurately grinding it. CONSTITUTION:A linear pluse motor has a scale substrate 2, bearings 3 rotating in contact with the substrate, a slider core 10 and a pinion 10a thereof, a shaft 4 and a coil 7 so that the distance between a shaft supporting surface and the back surface of the slider 10 is set to project the outer race of the bearing 3 from the back surface of the slider 10. When the pinion 10a of the slider 10 is ground, the projected outer race of the bearing 3 is contacted, the pinion 10a is disposed upside, and placed on the bed 8 of a grinding machine, thereby grinding the pinion 10a by a grindstone 9.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a linear pulse smoke used as a drive source for typewriters, printers, etc.

Conventional Structures and Problems Recently, linear pulse motors have come to be used as carriage transport means for printers and the like, and there is a demand for linear pulse motors that have more stable performance and are less expensive.

A conventional linear pulse motor will be explained below. FIG. 3 is a side view of a conventional linear pulse smoke, in which 1 is a slider iron core, 2 is a scale substrate, 3 is a bearing in contact with the scale substrate 2, 4 is the slider iron core fixed with IK adhesive, and 5 is sandwiched between the back surface of the slider 1 and the yoke 6 and fixed with adhesive. 1a is provided on the front surface of the slider iron core 1, and the scale board The small tooth portion 7, which faces the small tooth portion 2 with a small gap, is the small tooth portion 1a' (a coil having a z iron core).

FIG. 4 is a diagram showing the processing state during grinding of the slider iron core 1.

8 is a grinding machine bed, 9 is a grinding wheel, and 1b is a receiving surface for the shaft 4.

Regarding the linear pulse motor configured as above, the grinding procedure and assembly of the small tooth portion 1a will be explained below.

Slyke-1 before fixing shaft 4 with adhesive.
Place the small tooth part 1a on the grinding machine bed 8 with the small tooth part 1a set to "-", grind the receiving surface 1b of the shaft 4, and while measuring the dimension of a certain depth arrow H, grind the small tooth part 1d in the same mounting state. Processing ○ Next, attach a shirt to the receiving surface 1b of the ground shaft 4)・4
Insert and fix with adhesive.

However, in the conventional configuration described in "-", the reference during grinding of the small tooth portion 1a is the receiving surface 1b, but the reference in the actual operating state is the outer ring of the bearing 3, and therefore, variations in the outer diameter of the shaft 4 occur. Depending on the quality of the bonding work or the quality of the adhesion work, the initially desired amount of void between the small tooth portion 1a and the scale substrate 2 could not be obtained, resulting in a significant negative impact on performance.

OBJECTS OF THE INVENTION It is an object of the present invention to solve the above-mentioned conventional problems and to provide a linear pulse motor that can easily and accurately grind small tooth portions.

Structure of the Invention In order to achieve the above-mentioned object, the present invention has a configuration of a linear pulse motor equipped with a slider iron core in which the distance between the surface of the shaft receiver and the back surface of the slider is set so that the outer ring of the bearing protrudes from the back surface of the slider. By grinding with the bearing in opposition, the grinding process can be performed easily and with high precision, improving performance and stability.

DESCRIPTION OF EMBODIMENTS The present invention will be described in detail below. In addition, the above-mentioned figures 3 and 4
Components that are the same as those in the figures are given the same reference numerals.

FIG. 1 is a side view of a linear pulse motor in one embodiment of the present invention, in which 2 is a scale substrate, 3 is a bearing that rotates while contacting the scale substrate 2, 10 is a slider iron core, 4 is the slider 1o, and 3 is a bearing that rotates while being in contact with the scale substrate 2. The shaft is press-fitted into the bearing 3, 10a is a small toothed part facing the scale substrate 2 with a small gap, and 10a is the small toothed part 10.
A is a coil with an iron core.

FIG. 4 is a state diagram when grinding the small tooth portion 10a, and 8 is a grinding machine bed and 9 is a grinding wheel.

Regarding the linear pulse motor of this embodiment configured as above, the procedure for grinding the small tooth portion of the slider will be described below.

First, the slider 10 with the bearing 3 press-fitted and fixed onto the shaft 4 is placed on the grinding machine bed 8 with the small tooth portion 10a facing upward, and the small tooth portion 10a is ground using the grinding wheel 9.

As described above, according to this embodiment, after the bearing 3 is assembled, the small tooth portion 10a is ground by using the outer ring of the bearing 3 that protrudes from the back surface of the slider 10 as a counter.
Processing is easier and costs are lower. Furthermore, since the impact during grinding is the same as the impact during actual operation, the grinding accuracy of the small tooth portion 10a becomes the accuracy of the gap amount between it and the 1L scale substrate 2, making management easier.

Therefore, stable performance of the linear pulse motor, which is greatly affected by the amount of air gap, can be obtained by managing only the grinding process.

Effects of the Invention The present invention is a linear pulse molding with a slider iron core that sets the distance between the slider shaft holder and the slider back surface so that the outer ring of the bearing protrudes from the back surface of the slider, and is ground against the bearing. This allows grinding to be performed easily and with high precision, improving performance and stability.

[Brief Description of the Drawings] Fig. 1 is a side view of a linear pulse motor according to an embodiment of the present invention, Fig. 2 is a state diagram of the same embodiment during grinding, and Fig. 3 is a conventional linear pulse motor. side view, 4th
The figure shows the state during grinding. 1... Slider, 1a... Small tooth part, 2...
Scale board, 3...Bearing, 4...Shaft, 8...Grinding machine bed, 1b...Shaft support is surface, 10...Slider, 10a...Small tooth part O agent Name: Patent attorney Toshio Nakao and 1 other person @Figure 1 Figure 2

Claims (1)

[Claims] The small tooth portion and the shaft holder include a slider iron core in which a surface is formed, a coil wound around the small tooth portion, a permanent magnet and a shaft fixed to the slider iron core, and a bearing attached to this shaft. A slider with
It has a scale substrate disposed with a small gap from the small tooth portion of the slider, and the shaft holder of the slider iron core has a distance between the surface and the back surface of the slider iron core, A linear pulse motor characterized in that the dimensions are such that a part of the outer ring of the bearing protrudes from the back surface of the slider core when the shaft on which the bearing is mounted is fixed.