JPH0340521Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a workpiece grinding device for grinding a decompression cam or other workpiece assembled on a valve drive camshaft of an engine.

(Prior Art) Conventionally, this type of apparatus has been provided with a workpiece setting table on a machine base, a rotary grindstone that can move forward and backward, and a workpiece transfer device that carries the workpiece into and out of the workpiece setting table. In this case, one workpiece setting table is generally provided, and in such a case, after setting the workpiece on the workpiece setting table, the rotary grindstone is advanced to grind the workpiece, and then the workpiece is ground. The rotary grindstone is moved back and left on standby in this state, the workpieces on the workpiece setting table are carried out, and new workpieces are carried in. Thereafter, the rotary grindstone is moved forward again to grind the workpieces.

(Problem to be solved by the invention) In the conventional method described above, the rotary grindstone waits in the retracted position until the processed workpiece on the workpiece set table is taken out and a new workpiece is brought in. There is a problem in that the time required during that time is wasted and no improvement in productivity can be expected.

An object of the present invention is to provide a device that solves this problem.

(Means for Solving the Problems) In order to achieve the above object, the present invention arranges a pair of work setting tables in the front and back on the machine base, and a rotary grindstone is reciprocated in the front and back direction between the two work tables. The present invention is characterized in that it is movably provided, and is further provided with a workpiece conveying device along each of the workpiece setting tables for loading and unloading the workpieces to and from each of the workpiece setting tables.

(Example) The invention will now be described with reference to illustrated embodiments.

In the drawing, 1 is the machine base, 2, 2 is the front and rear 1 on the machine base 1.
A rotary grindstone 3 is provided between the two work setting tables 2 so as to be able to reciprocate in the front and back direction, and each work setting table 2 is placed along each work setting table 2. A workpiece conveying device 4 is provided for carrying in and out the workpiece A.

To explain this in more detail, each work set table 2
is equipped with a tailstock shaft 2a, a work spindle 2b facing the tailstock shaft 2a, and a motor 2c for rotationally driving the work spindle 2b. A
The rotary grindstone 3 is mounted on a slide stand 6 provided on a longitudinally longitudinal rail 5 fixed to the machine stand 1 so as to be rotatably driven by a motor 7. The slide table 6 is configured to be able to reciprocate back and forth by a motor (not shown) or the like.

Further, each of the workpiece conveyance devices is mounted laterally on a movable table 4c provided reciprocally by a motor 4b on a horizontally longitudinal rail 4a provided along each of the workpiece settables 2 on the machine table 1. A pair of clampers 4d and 4e for loading and unloading workpieces are installed with a space between them in the direction so as to be movable up and down by respective cylinders 4f and 4f. For example, the workpiece A can be freely carried into each workpiece setting table 2 from each loading chute 8 for each workpiece setting table 2 provided on the left side in FIG. The work A on the set table 2 can be freely carried out to each discharge chute 9 provided on the right side of the machine table 1 by means of the carry-out clamper 2e.

It should be noted that, in place of the workpiece transfer device 4 of the above embodiment, it is also possible to use an industrial robot or other workpiece transfer device to carry the workpiece A into and out of each workpiece setting table 2.

(Function) After workpiece A is set on the workpiece setting table 2 in front, the grinding wheel 3 is rotated and moved forward to perform grinding, and then the rotary grindstone 3 is moved back and the workpiece is set on the workpiece setting table 2 in the rear. Work A
While performing the grinding process, the processed workpiece A is carried out from the front workpiece setting table 2, and a new workpiece A is carried in thereto. This process is repeated sequentially to perform the grinding process, and by providing a pair of front and rear workpiece setting tables 2, 2 on the machine stand 1 and a workpiece conveying device 4 along each of the workpiece setting tables 2, one side While grinding the workpiece A on the workpiece set table 2, use the time to grind the workpiece A on the other workpiece set table 2.
The workpiece A can be carried in and out of the grinding wheel easily, and therefore the standby time of the rotary grindstone 3, which is required in the conventional grinding wheel 3, is not required. Furthermore, in the conventional method described above, the rotary grindstone 3 needs to make one reciprocation between retreating to the standby position and advancing from the standby position during one machining process.
In the present invention, only reciprocating or backward movement is required, and the time required for moving the rotary grindstone 3 one way is not required.

(Effects of the invention) As described above, according to the invention, a pair of work setting tables are arranged in the front and rear on the machine base, and a rotary grindstone is provided between the two work setting tables so as to be able to freely reciprocate in the front and rear directions. A workpiece conveying device is installed along each workpiece setting table to carry the workpiece into and out of the respective workpiece setting table, and while the workpiece on one of the workpiece setting tables is being ground. It is possible to use the time to load and unload the workpiece to the other workpiece set table.Therefore, compared to the above-mentioned conventional system, there is no need for waiting time for the rotary grindstone, and the time required to move the rotary grindstone is also reduced. This is approximately halved, which has the effect of improving productivity by that much.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an example of the device of the present invention, and FIG. 2 is a right side view thereof. 1... Machine stand, 2, 2... Work setting stand, 3... Rotating grindstone, 4, 4... Work conveyance device.

Claims (1)

[Scope of utility model registration request] A pair of work setting tables are arranged on the machine stand, front and rear, and a rotary grindstone is provided between the two work tables so as to be able to reciprocate in the front and back direction, and a grindstone is placed along each work setting table to each work setting table. A workpiece grinding device characterized by being provided with a workpiece conveyance device for loading and unloading the workpiece.