JPS63207558A - Machining device for printing wire guide member - Google Patents

Abstract

PURPOSE:To perform both radius chamfering and inner surface finishing operations at a time and make these operations into efficiency, by holding a printing wire guide member between a pair of abrasive grain fluidizer supplying members in that state that an abrasive grain fluidizer supply opening is matched with a printing wire guide port. CONSTITUTION:In the state that an abrasive grain fluidizer supply opening 4 is matched with a printing wire guide port 2 by a locating pin 9, the wire guide member 1 plurally held by a carrier 8 is held between a pair of abrasive grain fluidizer supplying members 3a and 3b and clamped to a jig 10. And, temperature of an abrasive grain fluidizer 5 is controlled by a temperature sensor 6 and a temperature regulator 7 and, while keeping the specified fluidity, the abrasive grain fluidizer 5 is made to reciprocatively flow in the printing wire guide port 2 by a supply source 11, whereby both radius chamfering for a square part and inner surface finishing operations are performed at the same time. Thus, improvement in machining efficiency and stabilization in machining quality are well promotable.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a processing device for a printing wire guide member of a dot printer head used as a printing device for a computer or the like.

[Background technology]

The dot printer head section is provided with a plate-shaped printing wire guide member having a plurality of printing wire guide holes through which the printing wires are inserted.

Conventionally, the printing wire guide hole of this printing wire guide member has been processed by secondary processing and secondary processing. - The next process is a cutting process in which a hole is made with a drill in the printed wire guide member in the state of raw material.

The secondary processing includes an inner finishing process in which the inner surface of the printing wire guide hole of the degreased and fired printing wire guide member is polished with a wire lamp, etc., and the corners of the printing wire guide hole are rounded and chamfered by puff polishing. This is finishing processing.

However, this requires two stages of secondary processing, resulting in high costs.

[Purpose of the invention]

An object of the present invention is to provide a processing device for a printing wire guide member that can perform the inner surface finishing of the printing wire guide hole and the corner finishing at one time, which is efficient, inexpensive, and has stable quality.

[Disclosure of the invention]

The printing wire guide member processing apparatus of the present invention includes a pair of abrasive fluid supply members that sandwich the printing wire guide member with the abrasive fluid supply hole aligned with the print wire guide hole of the print wire guide member. a temperature sensor that measures the temperature of the abrasive fluid supplied to the printing wire guide member by the abrasive fluid supply member; and a temperature sensor that adjusts the temperature of the abrasive fluid to a predetermined value in response to the output of the temperature sensor. It is equipped with a temperature control device to maintain the temperature.

According to the configuration of the present invention, since a pair of abrasive fluid supply members are provided that sandwich the printing wire guide member with the abrasive fluid supply hole aligned with the printing wire guide hole, the abrasive fluid supply hole is aligned with the printing wire guide hole. Corner radius chamfering and inner surface machining can be done at the same time, making it efficient and low cost.

A temperature sensor is provided to measure the temperature of the abrasive fluid, and a temperature control device is provided to maintain the temperature of the abrasive fluid at a predetermined temperature in response to the output of this temperature sensor. Liquidity can be maintained. Therefore, processing quality can be stabilized.

Embodiment An embodiment of the present invention will be described with reference to FIGS. 1 to 5. This processing device for a printing wire guide member consists of a pair of abrasive fluids sandwiching a printing wire guide member 1 in a state where an abrasive fluid supply hole 4 is aligned with a printing wire inner hole 2 of a printing wire guide member 1. a supply member 3; a temperature sensor 6 for measuring the temperature of the abrasive fluid 5 supplied to the printing wire guide member 1 by the abrasive fluid supply member 3; It is equipped with a temperature control device 7 that maintains the temperature of the fluid 5 at a predetermined temperature.

As shown in FIG. 2, the printing wire guide member 1 is a substantially rectangular parallelepiped plate made of ceramic material or the like, and has a plurality of printing wire guide holes 2 inserted therethrough in the thickness direction. These printing wire guide holes 2 are provided in two rows in the longitudinal direction of the printing wire guide member 1, as shown in FIG. (For example, if there are 24 dots, 24 are provided.) The inner diameter of these printing wire guide holes 2 is 0.2 to 0.3 n. These printing wire guide holes 2 are trumpet-shaped and open on the side into which the printing wire enters (the side opposite to the paper surface).

(See FIG. 4. The upper side is the paper side.) This allows the printing wire with curvature to move smoothly inside the printing wire guide hole 2.

In FIG. 1, the abrasive fluid supply member 3 includes an upper member 3a
and a lower member 3b. These upper member 3a and lower member 3b sandwich a plurality of printing wire guide members l from above and below.

The abrasive fluid supply hole 4 is provided to penetrate each of the upper member 3a and the lower member 3b in the thickness direction, and is arranged coaxially and aligned with the printing wire guide hole 2. Upper member 3a
The upper part of the abrasive fluid supply hole 4 of the lower member 3a has a trumpet shape that opens upward, and the lower part of the abrasive fluid supply hole 4 of the lower member 3a has a trumpet shape that opens downward.

The abrasive fluid 5 is a viscous fluid such as rubber containing abrasive grains such as diamond.

The temperature sensor 6 is composed of a thermocouple or the like embedded in a part of the lower member 3b.

The temperature adjustment device 7 includes a heater 7a such as a removable cartridge heater and a controller 7b. Heater 7a
A plurality of abrasive fluid supply holes 4 are arranged in parallel at the lower part of the upper member 3a along the lower surface of the upper member 3a. Lower member 3
A similar arrangement is also provided on the upper part of b. controller 7b
controls the amount of heat generated by increasing/decreasing the load voltage of the heater 7a in response to the output of the temperature sensor 6. Thereby, the abrasive fluid 5 is maintained at a predetermined temperature.

The carrier 8 is a flat plate having the same thickness as the printing wire guide member 1, and the printing wire guide member 1 is fitted into a groove passing through the carrier 8 in the thickness direction to hold the side surface. Career 8 is
The printing wire guide member 1 is held between the upper member 3a and the lower member 3b of the abrasive fluid supply member 3.

The positioning bin 9 is the upper member 3a of the abrasive fluid supply member 3.
This is a bottle that sequentially penetrates the carrier 8 and the lower member 3b of the abrasive fluid supply member to align these.

The jig 10 fixes the upper member 3a and the lower member 3b of the abrasive fluid supply member 3, and connects the communication hole 12 between the supply source 11 and the abrasive fluid supply hole 4 to supply the abrasive fluid. They are formed above and below the member 3.

The supply sources 11 are provided above and below the abrasive fluid supply member 3 (the lower supply source 11 is not shown). The supply source 11 causes the abrasive fluid 5 passing through the printing wire guide hole 2 to reciprocate in the vertical direction.

Incidentally, FIG. 5 shows a perspective view of a dot printer head 20 in which the printing wire guide member 1 is used.

In the figure, the upper side is the paper side. The printing wire guide member 1 is arranged at the tip of the dot printer head 20. 21.22 is another printing wire guide member,
Each has a printing wire guide hole. The printing wires 23 are arranged circumferentially in a drive unit having, for example, a solenoid mechanism, inserted into the printing wire guide holes 2 of the printing wire guide member 1, and reciprocating with respective curvatures.

According to the configuration of this embodiment, a pair of abrasive fluid supply members 3 are provided that sandwich the printing wire guide member 1 with the abrasive fluid supply hole 4 aligned with the printing wire guide hole 2. The radius chamfering of the corners of the printing wire guide hole 2 and the inner surface finishing can be performed at the same time, resulting in high efficiency and low cost.

A temperature sensor 6 for measuring the temperature of the abrasive fluid 5 is provided, and a temperature adjustment device 7 is provided for maintaining the temperature of the abrasive fluid 5 at a predetermined temperature in response to the output of the temperature sensor 6. The fluid 5 can maintain a predetermined fluidity. Therefore, processing quality can be stabilized. That is, the cross-sectional radius of the corner of the printing wire guide hole 2 is set to 10 to 50 um.
The surface roughness of the inner surface is Rmax 0.2~0.5 u'
Maintain quality at m.

(FIG. 4(B)) Also, the printing wire guide member 1 is connected to the abrasive fluid supply member 3.
Since it is held by the carrier 8 which is sandwiched by the carrier 8, after processing, the printing wire guide member 1 inside the carrier 8 can be removed after the carrier 8 is removed from the abrasive fluid supply member 3. At this time, an abrasive fluid 5 is provided at the portion where the printing wire guide member 1 is held by the carrier 8, that is, at the side surface.
Since there is no adhesion, the removal work of the printing wire guide member 1 is easy.

Since the abrasive fluid supply hole 4 has a trumpet shape, the fluidity of the abrasive fluid 5 is improved.

Note that if the inner surface of the abrasive fluid supply hole 4 is coated with fluororesin, titanium nitride, or the like, adhesion of the abrasive fluid 5 on the inner surface will be reduced and fluidity will be further improved.

Although the temperature adjustment device 7 is configured with the heater 7a and the controller 7b, a cooling device may be added to adjust the temperature by heating and cooling.

〔Effect of the invention〕

According to the processing device for a printing wire guide member of the present invention, a pair of abrasive fluid supply members are provided that sandwich the printing wire guide member with the abrasive fluid supply hole aligned with the printing wire guide hole. , The rounded chamfering of the corner of the printing wire guide hole and the inner surface finishing can be performed at the same time, resulting in high efficiency and low cost.

A temperature sensor is provided to measure the temperature of the abrasive fluid, and a temperature control device is provided to maintain the temperature of the abrasive fluid at a predetermined temperature in response to the output of this temperature sensor. Liquidity can be maintained. Therefore, processing quality can be stabilized.

[Brief explanation of the drawing]

FIG. 1 is a sectional side view of an embodiment of the present invention, FIG. 2 is a perspective view of the printing wire guide member, FIG. 3 is a top view of the printing wire guide member, and FIG. 4(A). (B) is a sectional view taken along the line -■ in FIG. 3 showing before and after processing, and FIG. 5 is a perspective view of a dot printer head in which the printing wire guide member processed by the processing apparatus of this embodiment is used. ■... Printing wire guide member, 2... Printing wire guide hole, 3... Abrasive fluid supply member, 4... Abrasive fluid supply hole, 5... Abrasive fluid, 6 ...Temperature sensor, 7
...Temperature control device, 8...Carrier (A) Force ox 1 Pull i Figure 3 (B) 41st prisoner after fIO construction

Claims (2)

[Claims] (1) A pair of abrasive fluid supply members that sandwich the printing wire guide member with the abrasive fluid supply hole aligned with the printing wire guide hole of the printing wire guide member, and this abrasive fluid supply member. a temperature sensor that measures the temperature of the abrasive fluid supplied to the printing wire guide member, and a temperature controller that maintains the temperature of the abrasive fluid at a predetermined temperature in response to the output of the temperature sensor. A printing wire guide member processing device equipped with: (2) The printing wire guide member processing apparatus according to claim 1, wherein the printing wire guide member is held by a carrier sandwiched by the abrasive fluid supply member.