JPH0318151Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to an auxiliary holder for the V-shaped holder device, which is particularly applicable to small-diameter round bars, in a V-shaped holder device used for marking round bars, etc. .

(Prior Art) A V-shaped holder device, particularly a magnetic V-shaped holder device 50 as shown in FIG. 4 that utilizes magnetic attraction force.
is known.

Next, an outline of such a magnetic V-shaped holder device (hereinafter abbreviated as M holder device) 50 will be described.
As shown in FIG.
2 and 53, and an inner cavity which is bored approximately in the center of the magnetic circuit block and spans each of the magnetic pole members 52 and 53, and has an axis parallel to the plane of the non-magnetic plate 51. The magnetic pole member 52, 53 has a cylindrical magnet 54 rotatably inserted therein, and the opposing upper ends of each magnetic pole member 52, 53 form inclined surfaces 55, 56 at an angle of 45 degrees with respect to the vertical, thereby providing a V surface 57. As a result, by operating the knob 58 and rotating the cylindrical magnet 54 by 90 degrees, the V surface 57 is energized or demagnetized, and as a result, a workpiece 60 such as a round bar can be adsorbed and fixed to the V surface 57 as desired. I can do it.

By the way, various V-shaped holder devices, including such M holder device 50, are generally used for machining and measuring precision mechanical parts, so the surface of the V surface 57 is finished by precision grinding. Further, the top and bottom of the V surface 57 are usually provided with grooves 59 having a substantially rectangular cross section for precision finishing.
In this case, in addition to intervening the non-magnetic plate 51,
This 51 is used to form the groove 59.

(Problem to be solved by the invention) However, since the V surface 57 formed in this way needs to be provided with the groove 59 as described above, the workpiece 60 is attached to the V surface 57 as shown in FIG. Workpieces 6 with an extremely small diameter are fine as long as they are in contact with each other.
In the case of 1, it gets into the groove 59, causing a problem that it becomes impossible to hold it or that it cannot be held accurately.

(Means for Solving the Problems) The present invention solves the above-mentioned conventional problems, and is achieved by the following auxiliary holder for a V-shaped holder device.

In other words, the auxiliary holder 1 (Fig. 1) according to the present invention
is equipped with a pair of plate-like members 4, 5 having comb teeth 2..., 3... formed on one end side and whose upper and lower surfaces are parallel surfaces, and the comb teeth 2... of each plate-like member 4, 5. , 3... are in mesh with each other and are swingably connected by a shaft member 7 within the lap plane of each comb tooth 2, 3.

Further, according to a preferred embodiment of the present invention, the plate-like members 4 and 5 are formed of a magnetic material.

(effect) Next, the operation of the present invention will be explained.

The auxiliary holder 1 according to the present invention is as shown in FIG.
It is used by being superimposed on the V surface K of the V-shaped holder device H. In other words, the plate-like members 4 and 5 are stacked on the inclined surfaces K1 and K2 forming the V-plane K. At this time, each comb tooth 2...
..., 3... mesh with each other, and each comb tooth 2...,
Since the plate members 4 and 5 are swingably connected at the lap surfaces of 3..., the plate members 4 and 5 can be tilted at any angle, and since the plate members 4 and 5 are formed into parallel planes, the auxiliary holder 1, a V surface 6 corresponding to the V surface K translated upward by a certain height is formed, and the V surface 6 does not have the groove C in the V surface K and becomes a perfect V shape.

Note that the V-shaped holder device H is replaced by the M holder device 50.
(FIG. 4), and when the plate-like members 4 and 5 are made of magnetic material, the auxiliary holder 1 is attracted and fixed on the V surface K.

(Embodiments) Hereinafter, preferred embodiments of the present invention will be described in detail based on the drawings.

Fig. 1 is a partially broken plan view of the auxiliary holder according to the present invention taken along the line - - in Fig. 2, Fig. 2 is a front view of the auxiliary holder, and Fig. 3 is the same set in the M holder device. It is a front view of an auxiliary holder.

First, the configuration will be explained.

The plate-like member 4 is integrally formed with a relatively thick rectangular base plate 10 and a large number of comb teeth 2 protruding from one end thereof at regular intervals. One comb tooth 2 has a substantially rectangular parallelepiped shape, and
Each comb tooth 2... and the substrate part 10 are on the same parallel plane 4
a, 4b. In terms of shape, a chamfered portion 4c is formed at an angle of 45° with respect to the plane 4a on the upper side of the other end of the substrate portion 10, and a chamfered portion 4c is formed at an angle of 45° with respect to the plane 4b at the lower end of each comb tooth 2. A chamfered portion 2c is formed with an inclination angle of .degree. By performing such chamfering, each chamfered portion becomes a horizontal surface in the usage state as shown in FIG.

Further, the plate member 4 is preferably integrally formed of a magnetic material such as steel, and in particular, the parallel planes 4a and 4b are finished with high precision, and the surface is preferably subjected to surface hardening treatment such as hardening or hard chrome plating.

On the other hand, the other plate-like member 5 is also formed in substantially the same manner as the plate-like member 4 with symmetry. In other words, the substrate portion 11 of the plate-like member 5 is formed in perfect plane symmetry with respect to the substrate portion 10, and the comb teeth 3 of the plate-like member 5 are
. . . are provided at selected positions so that they interlock with each other with a certain clearance S interposed in each gap between the comb teeth 2 . Note that each comb tooth 3 is formed in a plane symmetrical shape with respect to the other comb tooth 2.

In addition, each comb tooth 2... and 3... has a bearing hole 1 that is coaxial with a straight line that passes through the lap surface when they are interlocked.
2..., 13... are drilled. Bearing holes 12, 13
In this case, the shaft member 7, which is formed to have a smaller diameter than the inner diameter of the bearing holes 12 and 13, is inserted with a certain play. In this way, the shaft member 7 and the comb teeth 12, 13
The reason why there is play between them is to ensure that each plate member 4, 5 and the V surface K on the side of the holder device H are in complete contact with each other. The shaft member 7 is preferably made of a non-magnetic and wear-resistant material such as stainless steel. In this case, the shaft member 7 may be made of a magnetic material, but this will cause a slight magnetic short circuit, resulting in a decrease in magnetic force.

In addition, E-rings 14, 14 for preventing the shaft member 7 from coming off are attached to both ends of the shaft member 7, and washer-shaped spacers 15 are attached to the shaft member 7 on both sides of the second comb teeth 2, 3 from the outside. The clearance S is maintained between the comb teeth 2 and 3 by interposing the comb teeth 2 and 3. Note that the spacers 15 are desirably made of a non-magnetic material.

By configuring as described above, the plate member 4
and 5 can swing (rotate) around the shaft member 7. In this case, the plate members 4, 5 and the shaft member 7
There is a certain gap between them. Incidentally, in order to prevent the plate members 4 and 5 from colliding with each other, a regulating stopper or the like may be provided so that the plate members 4 and 5 rotate within a certain angular range. Further, magnetically, the plate members 4 and 5 are separated from each other.

Next, the method of use will be explained with reference to FIG.

In FIG. 3, the virtual line indicates the V surface 57 seen from the front of the M holder device 50 shown in FIG. 4.

Since the auxiliary holder 1 according to the present invention can swing freely around the shaft member 7, it is sufficient to align and overlap the V surface 57 as it is. FIG. 3 shows the stacked state in which each plate-like member 4, 5 has a V
Surface contact is made with the inclined surfaces 55 and 56 forming the surface 57. As a result, a new V surface 6 is formed on the upper surface of the auxiliary holder 1. This V surface 6 has a perfect V shape when viewed from the front, and as a result, even a workpiece 61 such as a round bar having a diameter smaller than the width of the groove 59 can be accurately held.

In this state, the M holder device 50 (fourth
When the V surface 57 is excited by operating the knob 58 shown in the figure, the auxiliary holder 1 is attracted to the V surface 57, and the workpiece 61 is also attracted to the V surface 6 of the auxiliary holder 1. Therefore, it is possible to hold a workpiece 61 having a small diameter, which has been impossible in the past, without deteriorating various characteristics such as stability and accuracy.

Although the embodiments have been described in detail above, the present invention is not limited to these embodiments.

For example, although the M (magnetic) holder device is illustrated, it can be similarly applied to a general V-shaped block. In this case, the plate member does not need to be magnetic. Furthermore, although storage and convenience have been improved by connecting the plate-like members with a shaft member, the shaft member may be omitted and each plate-like member may be combined, or a partial comb-like structure may be used. Only the parts may be connected by a shaft member. Other detailed shapes,
Any changes in configuration, quantity, materials, arrangement, etc. can be made without departing from the spirit of the present invention.

(Effects of the invention) As described above, the auxiliary holder for a V-shaped holder device according to the present invention includes a pair of plate-like members having parallel planes with comb teeth formed on one end side, and the comb teeth of each plate member are matched with each other. Since they form a V surface by meshing, the following significant effects can be obtained.

By using this auxiliary holder, it is now possible to reliably and accurately hold even extremely small-diameter workpieces that could not be held conventionally with a single V-shaped holder device. Moreover, various characteristics such as accuracy are not impaired in any way.

There is no need to make any changes to the existing V-shaped holder device, and since it can be used by attaching and detaching it to any holder device, it is easy to use and has great versatility.

In particular, when used in an M holder device according to a preferred embodiment, the auxiliary holder is always attracted to the V surface of the device, so stability is not compromised.

[Brief explanation of the drawing]

Fig. 1 is a partially broken plan view of the auxiliary holder according to the present invention taken along the line - - in Fig. 2, Fig. 2 is a front view of the auxiliary holder, and Fig. 3 is the same set in the M holder device. FIG. 4 is a front view of the auxiliary holder, FIG. 4 is an external perspective view of the M holder device, and FIG. 5 is a longitudinal sectional front view of the M holder device. In the drawings, 1: auxiliary holder, 2, 3: comb teeth, 4, 5: plate member, 6: V surface, 7: shaft member.

Claims (1)

[Claims for Utility Model Registration] 1. Inclination of a V-shaped holder device that positions and supports a workpiece such as a round bar by abutting the outer surface of the workpiece, such as a round bar, against a pair of sloped surfaces provided in a V-shape. Comb teeth are provided on the opposing surfaces of plate-like members whose upper and lower surfaces are parallel planes, which are used by overlapping each other on the surface, and the comb teeth are interlocked with each other, and a shaft-like member is provided within the lap surface of each comb tooth. An auxiliary holder for a V-shaped holder device characterized by being swingably connected. 2. V according to claim 1 of the utility model registration claim, characterized in that the plate-like member is made of a magnetic material.
Auxiliary holder for the shape holder device. 3. The auxiliary holder for a V-shaped holder device according to claim 2, wherein the plate-like members are magnetically separated from each other.