JPS6142772Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a device for measuring the end face of a workpiece placed in a processing position.The purpose of the invention is to retreat to a position where the measuring head does not interfere with the loading/unloading of the workpiece or the coolant nozzle, etc. when not measuring. This not only simplifies the mechanism used to do this, but also allows a large amount of evacuation.

In a device that measures the end face of a workpiece, the position of the end face to be measured is in a position facing the grinding wheel processed surface, so the measuring head must be placed in a position facing the grinding wheel processed surface. Since there is a coolant nozzle, etc. above the location where the end face measuring device is placed, when installing the base of the end face measuring device on a grindstone, it is necessary to support the measuring head on the base to avoid interference with the coolant nozzle, etc.

Conventionally, as shown in Japanese Utility Model Publication No. 51-18552, a grinding wheel that is perpendicular to the rotational axis of the grindstone and approximately A parallel link extending in the horizontal direction is provided, a vertical support plate is provided at the tip of this parallel link, and a horizontal support plate parallel to the rotation axis of the grinding wheel is provided on this vertical support plate. A contact that contacts the end surface of the workpiece is attached vertically to one end of the horizontal support plate, and the measuring head is moved up and down at a position facing the grinding wheel processing surface to operate between the measuring position and the retreat position. Ta.

In this case, a parallel link mechanism with many parts is used to move the measuring head up and down in the vertical direction, and a parallel link mechanism with many parts is used in the vertical direction to connect the parallel link offset from the processing position and the contact located at the processing position. Not only does this require a support plate and a horizontal support plate, which complicates the structure, but if the measurement head is moved significantly upwards, it interferes with the coolant nozzle, etc., so the retraction position is also limited, making it difficult to attach and detach the workpiece. It was hot.

Furthermore, there is a numerically controlled lathe in which the detection head is moved from the measurement position to the retreat position, as disclosed in Japanese Utility Model Application No. 156803/1983. In this device, an arm-shaped detection head support is pivotally supported on a base attached to a housing offset from the processing position, and a shaft extending in a direction parallel to the spindle axis is provided at the tip of the detection head support. A detection head is attached to the tip of this shaft, and during machining, the detection head is moved above the machining position by pivoting the detection head support.

Therefore, even in this case, if there is a coolant nozzle, etc. above the machining position, the detection head will interfere with it when retracting, and the grinding machine that has a coolant nozzle, etc. above the machining position will There was a problem in which such a method could not be adopted.

The present invention provides a device that solves the above-mentioned conventional problems.The feature is that the measurement head is rotated diagonally upward from the measurement position, completely eliminating interference with the coolant nozzle and achieving a large retraction. That's true.

Embodiments of the present invention will be described below with reference to the drawings.
In FIGS. 1 and 2, 1 is a grinding wheel head, 2 is a grinding wheel fixed to a grinding wheel shaft 2a, 3 is a coolant nozzle, and 4 is a tailstock center supporting a workpiece w.

A fixed base 5 is fixed to the end of the upper surface of the grindstone head 1 on the workpiece w side, and a swivel table 6 is provided on the fixed base 5, which is rotatable about a pivot shaft 7. Swivel base 6
A circular arc hole 8 centered on the pivot shaft 6 is formed in the hole 8, and a tightening bolt 9 passing through the circular arc hole 8 is tightened and fixed to the fixed base 5.

Furthermore, a fixed shaft 10 is provided on the swivel base 6 with an axis perpendicular to the axis of the grinding wheel shaft 2a, and a connecting block 11 is movably attached to this. It is tightened and fixed in the rotated position. This connecting block 11 has a first support rod 1 perpendicular to the axis of the fixed shaft 10.
4 is held so as to be freely movable and rotatable in its axial direction, and is tightened and fixed by a tightening bolt having an operation knob 15.

A turning block 16 is provided at the upper end of the first support rod 14.
is rotatably held, and a second support rod 17 is held at right angles to the first support rod 14 so as to be movable and rotatable in the axial direction, and is tightened and fixed with a tightening bolt 19 having an operation knob 18. There is. A measuring head consisting of a dial gauge 26 and a probe 27 is attached to the tip of the second support rod 14 via a flexible holder 24, and is tightened and fixed by a flat operating knob 25.

Here, the angle between the first support rod 14 and the second support rod 17 is set as follows. The first support rod 14 is positioned by the connecting block 11 using the fixed shaft 10 as a fulcrum so that the tip end on the side having the turning block 16 is inclined toward the grinding wheel 2 side. Due to the inclination angle of the first support rod 14, the second support rod 17, which is orthogonal to the first support rod 14, is obliquely intersected with the axis of the workpiece w, and the rotation block 16 allows the second support rod 17 to be centered around the first support rod 14. The grinding wheel 2 is placed in a state where it rotates in an upwardly sloped plane from the grinding wheel 2 side toward the grinding wheel head 1 side. Therefore, the measuring head attached to the tip of the second support rod 17 tilts and pivots between the measurement position of the end surface of the workpiece w and the retracted position above the grindstone head 1 where it does not interfere with the loading and unloading of the workpiece w. It is. This 2
A mechanism for positioning is provided above the pivot block 16. The mechanism is shown in Figures 3 and 4.
As shown in the figure, a locking member 20 is fixed to the upper end of the first support rod 14 in a non-rotating state.
This locking member 20 has a retracted wall position stopper surface 2 on which the side wall surfaces 16a, 16a of the turning block 16 come into contact.
3a and a measurement position stopper surface 23a are provided. Furthermore, the locking member 20 and the turning block 16
It has a structure in which support pins 21a and 21b are erected on both sides, and a spring 22 is hooked between both support pins 21a and 21b.

Since the present invention has the above-described structure, the proper position of the contactor 27 on the end surface of the workpiece w at the measurement position can be adjusted and set using either one or both of the first support rod 14 and the second support rod 17. , and finer adjustment is obtained by means of the universal holder 24.

In addition, when the measurement head is retracted from the measurement position shown in the figure when not measuring, the second support rod 17 is rotated about the first support rod 14 via the rotation block 16, so that it can be moved upward from the measurement position to the upper part of the grindstone head 1. It pivoted diagonally and moved to a retreating position. Measurement positioning is determined by contacting one side wall surface 16b of the swing block 16 with one stopper 23b of the locking member 20, and retraction positioning is defined by contacting the other side wall surface 16b of the swing block 16 with the other stopper surface 23a of the locking member 20. It is defined by the contact of the wall surface 16a. In any state of contact, the second support rod 1
The spring 22 is pulled beyond the dead point between the support pins 21a and 21b during the diagonal turning of 7.
The tensile force ensures that it is held in place.

In addition, in the case where the mounting base of the coolant nozzle attached to the side end of the grinding wheel 2 on the grinding wheel head 1 interferes with the turning block 16, the turning table 6 is indicated by a two-dot chain line 6a in FIG. Interference can be prevented by turning the measuring head counterclockwise, and even in this case, the contact 27 of the measuring head can be engaged with the end surface of the workpiece by turning the first support rod 17 and moving the second support rod 17 along the axis.

As described above, the present invention sets the measurement head for measuring the end face of the workpiece to the measurement position facing the grinding wheel processing surface,
The mechanism for placing the mechanism in a retracted position that does not interfere with the loading and unloading of workpieces when not being measured has a simple and compact structure consisting of two orthogonal support rods, and the retracted position can be rotated diagonally upward from the measuring position. Since it is retracted, it can be retracted largely without interfering with the coolant nozzle etc. arranged above the measurement position, which has the advantage of making it extremely easy to carry in and out the workpiece. In addition, the measurement head can be adjusted in multiple dimensions using the first and second support rods, and has the advantage of being able to be freely set to avoid obstacles between the measurement position and the retracted position. have.

[Brief explanation of the drawing]

FIG. 1 is a front view of the device of the present invention, FIG. 2 is a plan view, FIG. 3 is a sectional view taken along the line of FIG. 1, and FIG. 4 is a view taken along the arrows of FIG. 1... Grinding wheel head, 2... Grinding wheel, 5... Fixed base, 10... Fixed shaft, 11... Connection block, 1
4...First support rod, 16...Swivel block, 17
... Second support rod, 20 ... Locking member, 21a, 2
1b...Support pin, 22...Spring, 23a
...Stoppa surface, 23b...Stoppa, 26...
Dial gauge, 27...contact.

Claims (1)

[Scope of utility model registration request] A fixed base is fixed to the workpiece side end of the grinding wheel head, a first support rod whose tip extends toward the grinding wheel is attached to this, and the first support rod is attached to the grinding wheel side end.
A second support rod, which freely holds a measuring head at its tip, is supported so as to be rotatable in a plane that is obliquely perpendicular to the workpiece axis and slopes upward from the grinding wheel side toward the grinding wheel head side. A mechanism is provided at the intersection of the first support rod and the second support rod for positioning and holding the second support rod at a measurement position where it can come into contact with the end surface of the workpiece and a retracted position where it does not interfere with loading and unloading of the workpiece. An end face measurement device featuring: