(e)a second motor for rotating the eccentric shafts wherein rotation of the eccentric shafts causes the sanding head to move in a translational orbital movement。

14。The sander according to claim 13, where the lower roller of the sanding head comprises a driven roller。

15。The sander according to claim 13, wherein the upper arcuate plate is adapted to apply tension to the endless abrasive belt rotating around the upper arcuate plate and the lower roller。

16。The sander according to claim 15, where the upper arcuate plate is caused to apply tension to the endless abrasive belt by at least one operatively associated pneumatic actuator。

17。The sander according to claim 13, wherein the sanding head is adapted to move vertically upwardly and downwardly relative to the conveyor to accommodate different size products。

18。The sander according to claim 13, where the first motor drivingly rotates the lower roller。

19。The sander according to claim 18, wherein the first motor is connected to the lower roller by a belt and pulley drive。

20。The sander according to claim 13, wherein the conveyor comprises an endless conveyor belt rotating around a driven roller and a freely rotatably idler roller so as to define an upper belt run and a lower belt run, and a stationary table being positioned immediately beneath the upper belt run。

21。The sander according to claim 20, including a conveyor drive motor operatively connected to the driven roller by a gear drive。

22。The sander according to claim 20, wherein the conveyor is adapted to move vertically upwardly and downwardly relative to the sanding head to accommodate different size products。

23。The sander according to claim 13, wherein the second motor is connected to the at least one eccentric shaft by a belt and pulley drive。

24。A method of sanding products comprising:

(a)placing a product on a conveyor belt that moves the product through an abrading area; and

(b)abrading the product in the abrading area by a mechanism having a sanding head comprising an endless abrasive belt rotating around an upper arcuate plate and a lower roller, a first motor for rotating the lower roller of the sanding head where the rotation of the lower roller causes the abrasive belt to rotate endlessly around the upper arcuate plate and lower roller, at least one rotatable eccentric shaft rotatably mounted at one end to the upper arcuate plate and at the other end to the lower roller of the sanding head, and a second motor for

rotating the at least one eccentric shaft wherein rotation of the at least one eccentric shaft causes the sanding head to move in a translational orbital movement。

25。The method of sanding according to claim 24, including the step of vertically moving the sanding head to 5 accommodate products of different sizes for sanding。

26。The method of sanding according to claim 24, including the step of vertically moving the conveyor belt to accommodate products of different sizes for sanding。

27。A method of sanding products comprising: to

(a)placing a product on a conveyor belt that moves the product through an abrading area; and

(b)abrading the product in the abrading area by a mechanism having a sanding head comprising an endless abrasive belt rotating around an upper arcuate plate and

a lower roller, a first motor for rotating the lower roller of the sanding head where the rotation of the lower roller causes the abrasive belt to rotate endlessly around the upper arcuate plate and lower roller, a pair of eccentric shafts comprising an eccentric shaft on each side of the abrasive belt that extends between the upper arcuate plate and the lower roller of the sanding head wherein each shaft is rotatably mounted at each end thereof in a corresponding upper and lower bearing, and a second motor for rotating the eccentric shafts wherein rotation of the eccentric shafts causes the sanding head to move in a translational orbital movement。摘要一种砂光机器，用于将工件放置在传送带上的工件表面，沿着第一方向朝下一个砂光头。打磨头包括上拉辊和一个较低的接触辊上的一个砂带。张力辊和接触辊上设有一个平移轨道运动的双偏心IC轴连接，旋转驱动电机的连接。在上辊和下辊张力接触至少一个也通过手术连接驱动从电机等提供的砂带上张力辊无尽的转动下滚轮。。在这种方式中，砂带具有两个同时叠加运动组成的张力辊和接触辊和单轨道式旋转运动利用运动由偏心轴旋转对。重新经磨纹均匀，呈现由不断旋转砂带基本上不产生划痕通常。第二实施例中采用的砂头上辊代替弧形板。