JPH0413085Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a grindstone dressing device,
In particular, the present invention relates to a grindstone dressing device that can simultaneously perform dressing while grinding during rough grinding in heavy grinding.

[Prior Art] In a grinding machine such as a screw grinder or a cylindrical grinder, the grinding process using a grindstone and the dressing process of the grindstone are normally performed separately. That is, in order to dress the grindstone, the grinding process is temporarily interrupted, and after the dressing is finished, the grinding process is resumed, and by repeating this grinding and dressing, the desired grinding is performed. .

As described above, dressing of the grinding wheel is always necessary for grinding, but as mentioned above, the grinding process has to be interrupted every time dressing is performed, which poses a problem in terms of work efficiency.

[Problems to be solved by the invention] The present invention was made to solve these conventional problems, and in heavy grinding, the depth of cut is
0.3 to 0.4 mm, while the dressing depth of cut is about 0.01 to 0.02 mm, which is less than 1/10, so dressing at the same time as grinding during rough grinding will not have a negative effect on the grinding. Therefore, it is an object of the present invention to provide a grindstone dressing device that allows grinding and dressing to proceed simultaneously.

[Means for Solving the Problems] As a means for solving the above-mentioned problems, this invention provides a means for controlling the feed of the grindstone and the dresser to perform dressing without interrupting grinding during heavy grinding. The gist of the present invention is to provide a control means for controlling the grinding to be interrupted and dressing to be performed during finish grinding.

[Example] This invention will be explained in more detail below with reference to the illustrated example.

Reference numeral 1 denotes a workpiece to be ground, which is not shown in the drawings, but is supported by a headstock and a tailstock, rotates, and is cut by a grindstone 2 . The grindstone 2 is supported by a grindstone stand 3, and is slid by a motor 4 in the cutting direction and the opposite direction. Reference numeral 5 denotes a dresser stand placed on the grinding wheel stand 3, and a dresser 6 is mounted on the upper part.
is attached so that it can be slid toward or away from the grindstone 2 by means of a motor 7. 8 is a control means, which is connected to the motors 4 and 7 and controls their operation;
It is also connected to the object to be ground 1 and the grindstone 2 so that their rotations can be controlled.

This control means 8 detects heavy grinding from the cutting depth of the grindstone 2, and also operates the motors 4 and 7 even when dressing is required.
A command is given to continue the proper movement of the grindstone head 3 and dresser table 5.

The depth of cut in heavy grinding is generally 0.3 to 0.4
It is extremely large (mm). On the other hand, the depth of cut for dressing is approximately 0.01 to 0.02 mm, and by dressing, the outer diameter of the grindstone 2 becomes smaller by an amount corresponding to the depth of cut for dressing. Since the depth of cut is extremely large compared to this, even if the outer circumference is reduced due to dressing, it will not affect heavy grinding. Therefore, there is no problem even if heavy grinding and dressing are performed simultaneously.

Next, when finishing the workpiece 1 to be finished to the correct size, the control means 8 similarly detects this from the cutting depth of the grindstone 2, and also controls the movement of the grindstone head 3 when dressing is necessary. It works to stop it. This is because if finish grinding is performed with the outer diameter of the grindstone 2 reduced by dressing, the object to be ground will be ground into a tapered shape, and the object will not be finished to the desired size.

In the grinding process, finish grinding time is relatively short and heavy grinding time is quite long, but if heavy grinding and dressing are performed simultaneously as described above, heavy grinding time can be shortened, and as a result, grinding work efficiency can be improved. can be significantly improved.

Although the dresser in this embodiment is shown to be used for dressing a cylindrical grindstone, it can also be used for thread grinding in the same manner as described above if a suitable dresser table is used for a chevron-shaped grindstone in a thread grinding machine. Grindstone dressing can proceed at the same time, thereby improving the processing efficiency of thread grinding.

[Effects of the invention] As is clear from the above explanation, according to this invention, during heavy grinding during grinding, it is possible to simultaneously dress the grinding wheel while grinding the object to be ground. It is no longer necessary to interrupt grinding each time, and the efficiency of grinding work can be significantly improved, which has a tremendous practical effect.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing an embodiment of this invention. 1... object to be ground, 2... grindstone, 3... grindstone head,
4...Motor, 5...Dresser stand, 6...Dresser, 7...Motor, 8...Control means.

Claims (1)

[Scope of utility model registration request] The present invention is characterized in that the feed control means for the grindstone head and the dresser is provided with a control means for controlling the dressing so that during heavy grinding, dressing is performed without interrupting the grinding, and during finish grinding, the grinding is interrupted and dressing is performed. Grindstone dressing device for heavy grinding.