JPS6024520Y2 - Steady rest device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a steady rest device for a workpiece, and its purpose is to move an upper shoe and a lower shoe that contact two points, the upper side and the lower part of the outer peripheral surface of the workpiece, in the longitudinal and vertical directions. This eliminates mutual interference during adjustment and simplifies adjustment work.

BACKGROUND OF THE INVENTION Some devices for steadying workpieces in grinding and the like employ a so-called R-shaped shoe in which an upper shoe and a lower shoe are provided on the inner peripheral surface of an arc-shaped member.

Such an R-shaped shoe is mainly used when supporting a different part of the workpiece from the machined part, and since the centers of the arcuate support surfaces of the upper shoe and the lower shoe can be aligned, it is possible to support the rotation of the workpiece. It has high centering accuracy and has characteristics that prevent chatter from occurring.

As shown in Japanese Utility Model Publication No. 51-30047, a typical steady rest device using an R-shaped shoe is one in which an arc-shaped member is fixed to a rest arm, and the rest arm is moved far away from the upper shoe and downward. It is pivoted to the main body via an eccentric sleeve so that it can swing around the misaligned axis,
By operating the adjustment knob, the position of the arc-shaped member is adjusted back and forth together with the rest arm, and by operating the other adjustment knob, the arc-shaped member is rotated about a pivot, thereby adjusting the vertical position of the lower shoe.

In this case, if the arc-shaped member is adjusted in the front-rear direction and the upper shoe approaches the workpiece, the lower shoe tends to move away from the outer circumferential surface of the workpiece; When the upper shoe is brought close to the workpiece, the upper shoe tends to move away from the workpiece, and there is mutual interference in the amount of adjustment in the front-rear direction and up-down direction, and in order to set each shoe in the proper position, the upper shoe tends to move away from the workpiece. This made the adjustment work unnecessarily complicated.

The present invention solves the above-mentioned conventional problems, and its feature is that the fulcrum position when adjusting the longitudinal position of the upper shoe in the R-shaped shoe is placed on the outer peripheral surface of the arc-shaped member closest to the lower shoe. Further, the fulcrum position when adjusting the vertical position of the lower shoe is placed on the outer circumferential surface of the arc-shaped member closest to the upper shoe, thereby eliminating mutual interference in the longitudinal and vertical adjustment of the upper and lower shoes.

Embodiments of the present invention will be described below with reference to the drawings.

1 is a table; 2 is a main body of the apparatus (hereinafter referred to as the main body) fixed to the table 1 with bolts 4 and a support 3;

The main body 2 is provided with an upper guide groove 5a and a lower guide groove 5b that extend horizontally, and an upper sliding member 6a and a lower sliding member 6b are slidably guided.

An inclined surface 11 is formed on the upper surface of the tip end of the upper sliding member 6b.

Reference numeral 7a denotes an adjustment screw screwed into the upper sliding member 6a, and a front-rear adjustment knob 8a adjusts the front-rear position of the upper shoe 15a, which will be described later, via the upper sliding member 6a.

Reference numeral 7b is an adjustment screw screwed into the lower sliding member 6b, and the lower sliding member 6b is moved back and forth by the vertical adjustment knob 8b to adjust the vertical position of the lower shoe 15b, which will be described later.

The upper sliding member 6a and the lower sliding member 6b are provided with long bolt holes 9a, 9b in the sliding direction, through which the tightening bolts 10a, 10b screwed into the main body 2 pass through. There is.

Reference numeral 12 denotes an arc-shaped member, and an upper shoe 15 is provided on the inner peripheral surface of the arc-shaped member.
a and a lower shoe 15b.

The arcuate member 12 is swingably supported by the support pin 13 with the outer circumferential surface of its back surface contacting the end surface of the upper sliding member 6a at the position of the upper shoe 15a.

Reference numeral 14 denotes a locking pin that is driven into the arc-shaped member 12 and engages with the upper surface of the tip of the upper sliding member 6a.

A1 indicates the upper contact point of the arc-shaped member 12. On the other hand, the outer peripheral surface of the arc-shaped member 12 on the opposite side of the lower shoe 15b is supported by point contact on the inclined surface 11 of the lower sliding member 6b.

A2 indicates the lower contact point of the arc-shaped member 12.

W is the workpiece. Since the device of the present invention has the above structure, the upper shoe 15a can be adjusted back and forth by moving the upper sliding member 6a back and forth by operating the front and rear adjustment knob 8a, and moving the arcuate member 12 downward on the opposite side of the lower shoe 15b. It is obtained by swinging around contact A2 as a fulcrum.

Further, the vertical adjustment of the lower shoe 15b is performed using the vertical adjustment knob 8.
By the operation b, the lower sliding member 6b is moved back and forth, and the arc-shaped member 12 is moved toward the upper shoe 15 based on the lift amount of the inclined surface 11.
It is obtained by swinging using the upper contact point A1 on the opposite side of a as a fulcrum.

After the upper sliding member 6a and the lower sliding member 6b have been adjusted and moved back and forth, they are tightened and fixed to the main body 2 using the tightening bolts 10a and 10b.

As described above, according to the device of the present invention, the upper shoe can be adjusted back and forth by swinging the arc-shaped member using the lower contact point A2 on the opposite side of the lower shoe as a fulcrum, and the lower shoe can be adjusted up and down using the lower contact point A2 on the opposite side of the upper shoe as a fulcrum. Since this is done by swinging the arc-shaped member using the upper contact point A1 as a fulcrum, there is almost no displacement of the upper and lower shoes, and there is no mutual interference between the upper and lower shoes in longitudinal and vertical adjustment, which is different from the conventional method. This has the advantage that adjustment can be easily obtained without repeating the adjustment operation many times.

[Brief explanation of drawings]

FIG. 1 is a partially sectional side view of the device of the present invention, and FIG. 2 is a sectional view taken along the line ■--■ in FIG. 1...Table, 2...Device body, 3
... Benefits, 5a, 5b ... Guide groove,
6a... Upper sliding member, 6b... Lower sliding member, 7a*7b... Adjustment screw, 8a...
...Front and rear adjustment knob, 8b...Vertical adjustment knob, 9 a, 9 b...''Bolt hole, 10a, 1
0b... Tightening bolt, 11... Inclined surface, 12... Arc-shaped member, 13... Support pin, 15a... Upper shoe , 15b...
・Lower shoe, A1... Upper contact, A2...
...Lower contact.

Claims (1)

[Scope of utility model registration request] An upper sliding member and a lower sliding member are provided which are slidably guided, and the upper sliding member and the lower sliding member are supported by the distal end of the upper sliding member and the distal end of the lower sliding member, and the upper shoe and the lower shoe are provided on the inner peripheral surface. An arc-shaped member is provided at the tip of the upper sliding member, and a contact surface of the arc-shaped member that contacts the outer peripheral surface of the back of the upper shoe, and a swing of the arc-shaped member using the contact point with this contact surface as a fulcrum. 1. A steady rest device, characterized in that a supporting means for allowing the movement of the foot is provided, and the tip of the lower sliding member is provided on an inclined surface that contacts the outer circumferential surface of the back of the upper shoe of the arc-shaped member.