JPS628989Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a tool clamp presetter used to measure the position of a cutting edge of a holding tool, etc. equipped with a cutting tool.

In general, a presetter holds a holding tool at one end of the main body base, and a cutting edge position measuring element is placed on the main body base at right angles to the tool axis, with reference to two mutually perpendicular slide guide surfaces on the main body base. It is equipped to be able to move freely in both directions and parallel directions.

This type of presetter is used to accurately know the dimensions (edge position) of the cutting tool before creating a program in these days when ATC type (automatic tool change) numerically controlled machine tools have become widespread. By knowing the dimensions of the machine, we aim to shorten the standard work time. Measurement items for the cutting edge position include the rotating diameter D of the cutting tool T' around the axis O of the holding tool T as shown in Fig. 2, and the cutting edge rotation diameter D of the cutting tool T' with the sleight guide surface H as the reference plane. There is an axial position (axial length) L. Further, as shown in FIG. 3, there is also an angle θ around the axis O with respect to the detent key K.

As a conventional tool clamp presetter,
For example, a fixed bet 1 as shown by the imaginary line in Figure 1
In addition, there are those that are fixed to a bed, in which the main body base 2 is fixed in a way that makes it impossible to carry them, and those that are simply stationary, such as those that are placed on a workbench 3 in a portable manner, as shown by the solid line in Fig. 1. There is. In the simple stationary presetter 5 shown in FIG. 1, the entire lower surface of the main body base 2 is placed on a workbench 3 on both sides via, for example, a pair (or four) of leg stands 6. In other words, the base is entirely stationary. However, if the base is entirely stationary as shown in FIG. 1, it requires a large installation area, which is inconvenient as a simple and portable type. In addition, the simple type shown in Fig. 1 is not equipped with a mechanism for finely adjusting the perpendicularity and parallelism of the slide guide surfaces H and V with respect to the tool axis O. ，
In order to maintain the perpendicularity of the V, the main body base 2 is formed to be extremely thick, which results in a heavy overall weight, which is also inconvenient to carry. Further, since a fine adjustment mechanism is not provided, extremely precise machining accuracy (squareness, etc.) is required when machining the guide surfaces H and V, which increases the manufacturing cost of the presetter 5.

The present invention solves the problems of the above-mentioned simple type, and the tool side end of the main body base is detachably fixed and supported on the workbench in a cantilevered manner, and between the fixed side part and the free end side part. By providing a fine adjustment mechanism for adjusting the angle of the slide guide surface, it is possible to reduce the mounting space for the presetter, reduce the weight of the presetter, and facilitate processing of the guide surface, etc. The present invention will be explained below based on the drawings.

In FIG. 2, the presetter main body base 11
, a vertically cylindrical tool support part 12 and a measuring part support part 1
3 are integrated. The tool support portion 12 has an upwardly opening tapered inner circumferential surface 15, and the tapered handle portion of the holding tool T is fitted into and held on this tapered inner circumferential surface 15. The measurement part support part 13 extends from the upper end side surface of the tool support part 12 to the tool axis (the center line of the inner circumferential surface 15).
The tool support part 1 extends rearward in a direction perpendicular to the
It is formed much thinner than 2. The upper surfaces of both the support parts 12 and 13 are formed into a flat surface as a diameter slide guide surface H perpendicular to the tool axis O.

A lead screw 16 extending in the front-rear direction is rotatably supported on the measuring part support part 13.
6 has a diameter slide block 17 screwed into it. The diameter slide block 17 has its left and right ends (the front end and the back end in the paper of FIG. 2) on the lower surfaces thereof in contact with the slide guide surface H, and the center portion is in the elongated hole of the main body base 11 in FIG. 3. 18 and whose lower end portion is connected to the lead screw 16 as described above.
is screwed into. 19 is a diameter handle connected to the lead screw 16. i.e. diameter handle 1
9 to rotate the lead screw 16 counterclockwise or clockwise, the diameter slide block 1
7 can be moved forward or backward. At this time, the diameter slide block 17 is guided by the slide guide surface H and moves in a direction perpendicular to the tool axis O, and the edge of the elongated hole 18 restricts displacement in the left-right direction.

Two guide rails 20 are fixed to the upper surface of the diameter slide block 17 (FIG. 2) at intervals in the front-rear direction, and the guide rails 20 extend upward at right angles to the slide guide surface H, and the upper end are connected by a connecting member 21. Guide rail 2
0 is formed as a longitudinal slide guide surface V that is perpendicular to the diameter slide guide surface H.

A longitudinal slide block 23 is fitted into the guide rail 20 so that it can be moved and stopped in the vertical direction by means of a longitudinal handle 24 (FIG. 3). For example, the guide rail 20 is formed with a vertically long rack, and the longitudinal handle 24 is provided with a pinion that engages with the rack.

The longitudinal slide block 23 has a longitudinal measuring element 26 (Fig. 2) and a diameter measuring element 27 extending forward.
is provided. 28 is a diameter dial gauge, and 29 is a longitudinal dial gauge.

Reference numeral 30 in FIG. 2 is a stopper stand, which can be detachably attached to the upper surface of the tool support portion 12, and is provided with a stopper insertion groove 31 as shown in FIG. 4. A stopper 32 having an arcuate notch 32a as shown in FIG. 3 is inserted into the stopper insertion groove 31.
The stopper 32 is a holding tool collar 34 (Fig. 4)
The holding tool T is engaged with the annular V-groove 34a to prevent the holding tool T from popping out upward. K in FIG. 2 is a rotation prevention key, which is inserted into the key groove of the tool T and the tool support portion 12, and locks the tool T so that it cannot rotate.

A fine adjustment mechanism 35, which is the main part of the present invention, is provided between the tool support part 12 and the measurement part support part 13 in FIG. The perpendicularity and parallelism with respect to the tool axis O can be finely adjusted. The fine adjustment mechanism 35 includes, for example, a fixing bolt 36 and an adjusting nut 37. That is, the bolt 36 is fixed to the rear surface of the tool support part 12 and extends rearward, while the adjustment nut 37 is rotatably fitted into a nut holder 38 integrally formed with the measurement part support part 13 and is connected to the holder 38. For example, it is locked by a locking ring 39 so as not to shift in the front-back direction relative to the main body. Therefore, by tightening or loosening the nut 37, the perpendicularity of the diameter slide guide surface H with respect to the tool axis O and the parallelism of the longitudinal slide guide surface V can be finely adjusted. Further, a pair of fine adjustment mechanisms 35 are provided on the left and right parts of the main body base 11 (the front side and the back side in the second drawing).
This makes it possible to finely adjust the torsion between the left and right widths of the slide guide surface H.

Next, the adjustment work of the perpendicularity and parallelism of both slide guide surfaces H and V will be briefly explained. The tool support portion 12 of the main body base 11 is fixed to a vise 40 as shown in FIG. 4, and the main body base 11 as a whole is supported by the vise 40 in a cantilevered manner as shown in FIG. 41 is a workbench to which a vise 40 is fixed. Next, both probes 26 and 27 are generally cutting tools.
Move the diameter slide block 17 forward or backward so that it comes close to T'. With the rough longitudinal position of the diameter slide block 17 set as described above, the fine adjustment mechanism 35 finely adjusts the perpendicularity and parallelism of the slide guide surfaces H and V with respect to the tool axis O. That is, the deflection and twist of the main body base 11 due to the tightening force of the vise 40 and the weight of the measuring parts such as the blocks 17 and 23 are corrected.

After fine adjustment, the position of the cutting edge of the cutting tool T', that is, the rotational diameter D, the axial length L, and the rotational direction position θ with respect to the key K are measured or set to specified dimensional positions. It also disassembles the holding tool after using it or reassembles the cutting tool T'.

When adjusting the rotational position θ between the cutting edge and the keyway, the key K and stopper 32 are removed and the holding tool T is rotated. At this time, the tapered inner circumferential surface 15 of the tool support portion 12 serves as a guide surface.

Further, as shown in FIG. 6, when opening and closing the tightening ring 45 using the tightening handle 43, a rotation prevention key K is fitted to fix the holding tool T so that it does not rotate. In addition, when the measuring elements 26 and 27 (Fig. 2) are not needed when disassembling the tool T, etc., both the measuring elements 26 and 27 can be moved around the appropriate vertical rotation support shaft to the front or back side of the paper in Fig. 2. Make sure that it does not rotate and interfere with disassembly work.

As explained above, in the present invention, the holding tool T etc. equipped with the cutting tool T' is attached to the presetter main body base 1.
1, and the cutting edge position measuring elements 26 and 27 are fixed on the main body base 11 with respect to the tool axis O, with two mutually perpendicular slide guide surfaces H and V on the main body base 11 as references. In a tool clamp presetter that is movable in perpendicular and parallel directions, the tool side end (tool support part 12) of the main body base 11 is attached to and detached from the workbench 41 etc. in a cantilevered manner via a vise 40, for example. The perpendicularity of the slide guide surfaces H and V with respect to the tool axis O is freely fixed and supported between the fixed side part (tool support part 12) and the free end side part (measurement part support part 13) of the main body base 11. Since the fine adjustment mechanism 35 for finely adjusting the parallelism is provided, there are the following advantages.

(1) Since it is fixedly supported on the workbench 41 of the main body base 11 in a cantilevered manner, the space required for installation is small, and it is convenient as, for example, a portable and simple presetter. That is, a large workbench or the like is not required.

(2) Fixed side part of main body base 11 (tool support part 1
2) and the free end side portion (measuring part support part 13), there is a fine adjustment mechanism 35 that finely adjusts the perpendicularity and parallelism of the slide guide surfaces H and V. The perpendicularity of H and V can be set accurately. That is, when manufacturing the main body base 11, there is no need to particularly strictly set the perpendicularity of the slide surfaces H, V, etc., and the manufacturing cost can be reduced.

(3) Also, by providing the fine adjustment mechanism 35, the guide surfaces H and V can be adjusted when manufacturing the main body base.
In order to always keep the perpendicularity of the main body base 11 in an accurate state, it is no longer necessary to make the main body base 11 thicker than necessary, for example. That is, the weight of the presetter can be reduced, making it more convenient as a portable and simple type.

[Brief explanation of the drawing]

Figure 1 is a side view of a conventional example, Figure 2 is a side view of a tool clamp presetter to which the present invention is applied, Figure 3 is a cross-sectional view of Figure 2, and Figure 4 is viewed from the arrow in Figure 2. Partial sectional view, Figure 5 is a view taken in the direction of the arrow in Figure 3,
FIG. 6 is a partial vertical side view showing another usage mode. 11...Main body base, 12...Tool support part (fixed side part), 13...Measurement part support part (free end side part), 26, 27...Longitudinal gauge head, diameter gauge head, 35... Fine adjustment mechanism.

Claims (1)

[Scope of utility model registration request] A tool support part for supporting a holding tool equipped with a cutting tool is formed at one end of the presetter main body base, and a measurement part support part equipped with a cutting edge position measuring element is formed at the other end. In the tool clamp presetter, which is movable in directions perpendicular and parallel to the tool axis with reference to two slide guide surfaces perpendicular to each other on the main body base, only the tool support part can be attached and detached to the workbench. The entire base of the main body is supported in a cantilevered manner on the workbench with the measuring part supporting part on the free end side. A bolt is provided that extends along the other supporting part, and the bolt is inserted into the other supporting part and locked with a nut, and the amount of deflection of the measuring part supporting part with respect to the tool supporting part is adjusted by adjusting the rotation of the nut. Tool clamp presetter.