TWI395638B - Rolling fixture and method for rolling circle - Google Patents

Description

Rounding fixture and rounding method

The present invention relates to the field of workpiece processing, and more particularly to a jig and a spheronization method for spheronizing a workpiece.

Cylindrical grinders are widely used to grind workpieces of various shapes into a circular shape (see "High Efficiency Deep Grinding of a Low Alloy Steel with Plated CBN Wheels", CIRP Annals-Manufacturing Technology, pp. 241-244, Volume 51, Issue 1, 2002), the principle is to use a pair of hollow fixtures, vacuum the inside of a fixture with a vacuum pump to adsorb the workpiece to be rounded onto the hollow fixture, and then move the other fixture to the other side of the workpiece The workpiece is clamped and fixed, and then the workpiece is ground using a grinding wheel. Such a cylindrical grinding machine can be widely used for rounding or rounding of a general-shaped workpiece, but such a mechanism can only grind one workpiece at a time, and the productivity is too low and the efficiency is not good. In addition, such a grinding machine needs to be manually placed or a mechanical arm to set the workpiece to be ground between the two clamps, which tends to cause a deviation of the position of the workpiece to be ground and reduce the precision of the rounding.

In view of the above, it is necessary to provide a rounding jig and a spheronization method which can effectively improve processing efficiency and accuracy.

A rounding jig for simultaneously rolling a plurality of workpieces, comprising a clamping mechanism and a base. The clamping mechanism includes a first clamping portion and a second clamping portion. The first clamping portion includes a first rotating rod and a first driver connected to one end of the first rotating rod, and the other end of the first rotating rod is a free end, The free end of the first rotating rod has a first contact member having elasticity, and the first driver is used to drive the first rotating rod to rotate. The second clamping portion includes a second rotating rod and a second driver connected to one end of the second rotating rod, the other end of the second rotating rod is a free end, and the free end of the second rotating rod has a An elastic second contact member, the free end of the second rotating rod is opposite to the free end of the first rotating rod, and the second rotating rod is located on a same line with the central axis of the first rotating rod, the second The driver is used to drive the second rotating rod to rotate. The surface of the base is provided with a groove for closely aligning the plurality of workpieces therein. The first contact member and the second contact member are respectively used for contacting the workpieces at the two ends of the plurality of workpieces, and the first contact member and the second contact member cooperate to clamp the plurality of workpieces to make the plurality of workpieces Detach the abutment and drive the plurality of workpieces to rotate.

A spheronization method using the above-mentioned rounding jig for rolling a plurality of workpieces, comprising the steps of: placing the plurality of workpieces into the grooves of the base, and aligning the plurality of workpieces in the grooves; The free ends of the free ends of the first end of the first rotating rod and the free ends of the second rotating rod are clamped by the plurality of workpieces closely arranged in the grooves of the base; the base is removed, and a The round grinding wheel rounds the plurality of workpieces to obtain a round finished workpiece.

Compared with the prior art, the rounding jig and the spheronization method adopt a base, and the plurality of workpieces are closely arranged in the groove of the base, and then the first clamping portion and the second clamping portion are closely arranged on the base. The workpiece in the groove is then rounded by the round grinding wheel, which avoids the positional deviation caused by the manual method and the mechanical arm placing the workpiece, and improves the accuracy of the spheronization. In addition, the rounding jig and the spheronization method can round and round a plurality of workpieces at one time, thereby improving the spheronization efficiency.

12‧‧‧Clamping mechanism

126‧‧‧First drive

14‧‧‧Abutment

128‧‧‧First Rotary

16‧‧‧Top block

130‧‧‧First contact

18‧‧‧Rolling wheel

132‧‧‧second drive

26‧‧‧First drive

134‧‧‧second rotating rod

30‧‧‧Workpiece

136‧‧‧second contact

100‧‧‧Rolling fixture

142‧‧‧ surface

122‧‧‧First clamping section

144‧‧‧ Groove

124‧‧‧Second gripping section

146‧‧‧Bevel

1 is a schematic view of a rounding jig provided by a first embodiment of the present invention.

2 is a flow chart of a spheronization method using the rounding jig of FIG. 1 according to a second embodiment of the present invention.

3 to FIG. 5 are diagrams showing the process of performing rounding using the rounding jig of FIG. 1 according to the second embodiment of the present invention. intention.

The invention will be further described in detail below with reference to the accompanying drawings.

Referring to FIG. 1, a first embodiment of the present invention provides a rounding jig 100. The rounding jig 100 includes a clamping mechanism 12 and a base 14. The clamping mechanism 12 is used to hold the workpieces 30 closely arranged together in a spheronization process. In the embodiment, the workpieces 30 are square.

The clamping mechanism 12 includes a first clamping portion 122 and a second clamping portion 124. The first clamping portion 122 includes a first driver 126 , a first rotating rod 128 , and a first contact member 130 .

The first driver 126 is coupled to one end of the first rotating rod 128 for driving the first rotating rod 128 to rotate about a central axis of the first rotating rod 128. A first contact member 130 is fixed to an end surface of the other end of the first rotating rod 128. The first contact member 130 is in contact with the workpiece 30 when the workpiece 30 is clamped by the clamping mechanism 12.

The second clamping portion 124 includes a second driver 132 , a second rotating rod 134 and a second contact member 136 . The second driver 132 is coupled to one end of the second rotating rod 134 for driving the second rotating rod 134 to rotate about a central axis of the second rotating rod 134. A second contact member 136 is fixed to the end surface of the other end of the second rotating rod 134. The second contact member 136 is in contact with the workpiece 30 when the workpiece 30 is clamped by the clamping mechanism 12.

The material of the first contact member 130 and the second contact member 136 is an elastic material such as a rubber or an elastic epoxy resin material.

The first clamping portion 122 is disposed opposite to the second clamping portion 124, wherein the central axes of the first rotating rod 128 and the second rotating rod 134 are on the same straight line. The first contact member 130 and the second contact member 136 are disposed opposite to each other for contacting and clamping the workpiece 30. The second clamping portion 124 is movable along the central axis direction of the second rotating rod 134, that is, the second contact member 136 can be moved toward and away from the first contact member 130. The clamping mechanism 12 can hold the workpieces 30 of different numbers and thicknesses. It can be understood that the first clamping portion 122 can also be designed to move toward and away from the second clamping portion 124 in the central axis direction of the first rotating rod 128, and is not limited to the embodiment.

The base 14 has a rectangular parallelepiped shape, and a surface 142 of the base 14 defines a V-shaped recess 144 for carrying the workpiece 30. The side walls of the recess 144 are two mutually perpendicular inclined faces 146, and two adjacent sides of the workpiece 30 are placed against the inclined faces 146. In this embodiment, it is preferable that the angle between the two inclined surfaces 146 and the surface 142 of the base 14 is 45 degrees, so that the workpiece 30 is more stable when placed in the groove 144, and the inclination is less likely to occur. It can be understood that the angle between the two inclined surfaces 146 can also be other angles, which can be determined according to the specific shape of the workpiece 30.

The rounding jig 100 further includes two top blocks 16 which are cylindrical and have a radial section radius equal to the radius of the finished circular workpiece of the workpiece 30 after predetermined rounding. The material of the top block 16 may be a material having a large specific gravity such as iron, copper, stainless steel or the like. When the plurality of workpieces 30 are stacked to form a workpiece group and placed in the recess 144, the two top blocks 16 respectively abut against the two end faces of the workpiece group formed by the plurality of workpieces 30, and the axial direction and the V shape of the top block 16 The grooves 144 extend in the same direction so that the workpieces are closely aligned within the grooves 144. In addition, since the radius of the radial section of the top block 16 is equal to the radius of the finished circular workpiece after the workpiece 30 has been rounded, the workpiece 30 can be compared with the top block 16 to determine whether the size of the workpiece 30 is appropriate, ie Whether the workpiece 30 can be rounded into a round finished workpiece that conforms to specifications.

Referring to FIG. 2, a second embodiment of the present invention provides a method for rounding a plurality of workpieces 30 by using the rounding jig 100 of FIG. 1, which includes the following steps:

(1) The plurality of workpieces 30 to be rolled are placed in the grooves 144 of the base 14 and the workpieces 30 are stacked in the grooves 144.

(2) the first contact member 130 of the first clamping portion 122 and the second contact member 136 of the second clamping portion 124 The two workpieces 30 located at the outermost side of the plurality of workpieces 30 are respectively contacted, and the plurality of workpieces 30 are clamped.

(3) The base 14 is removed, and the workpiece is rounded by a round grinding wheel 18 (such as the round grinding wheel 18 in Fig. 5) to obtain a round finished workpiece.

Referring to FIG. 1 and FIG. 3 to FIG. 5, the specific process of rounding a plurality of workpieces by using the rounding jig 100 is as follows:

In the step (1), the plurality of workpieces 30 to be rolled are placed in the recesses 144 of the base 14 and the top blocks 16 are abutted against the two workpieces 30 located at the outermost side of the plurality of workpieces 30, so that the plurality of workpieces 30 are mutually Close together, and then closely arranged in the groove 144.

In the step (2), the first contact member 130 of the first clamping portion 122 and the second contact member 136 of the second clamping portion 124 are respectively adjacent to the end faces of the two top blocks 16. When the first contact member 130 and the second contact member 136 respectively contact the two top blocks 16, but the two top blocks 16 are not under pressure, the two top blocks 16 are removed. Then, the first contact member 130 and the second contact member 136 are respectively brought into contact with the two workpieces 30 located at the outermost side of the plurality of workpieces 30 and clamped to the workpiece group. In this embodiment, the central axis of the first rotating rod 128 of the first clamping portion 122, the central axis of the second rotating rod 134 of the second clamping portion 124, and the central axis of the plurality of workpieces 30 are located on the same straight line.

It can be understood that the top block 16 can also be removed before the start of the step (2) after the completion of the step (1), and is not limited to the embodiment.

In step (3), the base 14 is removed, that is, the plurality of workpieces 30 are separated from the base 14. At this time, the plurality of workpieces 30 are clamped by the first clamping portion 122 and the second clamping portion 124. be fixed.

A round grinding wheel 18 is provided. The round grinding wheel 18 is connected to a driving device (not shown) for driving the round grinding wheel 18 to rotate. The rotating shaft of the round grinding wheel 18 is parallel to the central axis of the first rotating rod 128. .

The driving device is controlled to drive the circular grinding wheel 18 to rotate, and at the same time, the first driving unit 126 and the second driving unit 132 are controlled to rotate the first rotating rod 128 and the second rotating rod 134 respectively. When viewed from the end of the first driver 26, the first rotating rod 128, the second rotating rod 134, and the round grinding wheel 18 rotate in the same direction, such as the rotating directions of the first rotating rod 128, the second rotating rod 134, and the round grinding wheel 18. Both are clockwise; the first rotary lever 128 and the second rotary lever 134 have the same angular velocity of rotation. The round grinding wheel 18 is brought close to the workpiece group, and the workpiece 30 is rounded to obtain a round finished workpiece.

Compared with the prior art, the rounding jig 100 adopts a base 14 to closely arrange the plurality of workpieces 30 in the grooves 144 of the base 14 , and then the first clamping portion 122 and the second clamping portion 124 are closely arranged. The workpiece 30 in the groove 144 of the base 14 is then rounded by the round grinding wheel 18, which avoids the positional deviation caused by the manual method and the mechanical arm placing the workpiece 30, thereby improving the accuracy of the spheronization. In addition, the rounding jig 100 can roll a plurality of workpieces 30 at a time, improving the spheronization efficiency.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

14‧‧‧Abutment

16‧‧‧Top block

26‧‧‧First drive

30‧‧‧Workpiece

122‧‧‧First clamping section

124‧‧‧Second gripping section

126‧‧‧First drive

128‧‧‧First Rotary

130‧‧‧First contact

132‧‧‧second drive

134‧‧‧second rotating rod

136‧‧‧second contact

Claims (5)

A rounding jig for simultaneously rolling a plurality of workpieces, comprising a clamping mechanism, the clamping mechanism comprising: a first clamping portion, the first clamping portion comprising a first rotating rod and the first rotating rod a first driver connected to one end, the other end of the first rotating rod is a free end, the first driver is used to drive the first rotating rod to rotate; the second clamping portion, the second clamping portion includes a second a second driving device connected to one end of the second rotating rod, the other end of the second rotating rod is a free end, and the free end of the second rotating rod is opposite to the free end of the first rotating rod, and the a second rotating rod is located on a same line with a central axis of the first rotating rod, and the second driving device is configured to drive the second rotating rod to rotate; a base, the surface of the base is provided with a groove, the groove For aligning the plurality of workpieces therein; the free end of the first rotating rod has a first contact member having elasticity, and the free end of the second rotating rod has a second contact member having elasticity, the first The contact member and the second contact member are respectively used for the workpiece at both ends of the plurality of workpieces Touching, the first contact member and the second contact member cooperate to clamp the plurality of workpieces, disengage the plurality of workpieces from the base platform and drive the plurality of workpieces to rotate; and the two top blocks are cylindrical, The radius of the radial section is equal to the radius of the round workpiece of the finished workpiece after the predetermined rounding of the workpiece. When the plurality of workpieces are stacked to form a workpiece group and placed in the groove, the two top blocks are respectively used to abut the plural The two end faces of the workpiece set formed by the workpiece. The spheronization tool of claim 1, wherein the material of the first contact member and the second contact member is a rubber or an elastic epoxy resin material. A spheronization method using the spheronization tool according to claim 1 or 2, for spheronizing a plurality of workpieces, comprising the steps of: Inserting the plurality of workpieces into the grooves of the base, and aligning the plurality of workpieces in the grooves, and respectively abutting a top block at the two ends of the plurality of workpieces for squeezing the plurality of workpieces The plurality of workpieces are closely arranged in the groove, the shape of the top block is cylindrical, and the radius of the radial section of the top block is equal to the radius of the finished rolling circle of the workpiece to determine whether the plurality of workpieces are The rounding requirement is met; the free ends of the free ends of the first end of the first rotating rod and the free ends of the second rotating rod are clamped by the plurality of workpieces closely arranged in the grooves of the base; The abutment uses a round grinding wheel to round the plurality of workpieces to obtain a round finished workpiece. The spheronization method of claim 3, wherein the groove is a groove having a V-shaped cross section formed by two inclined faces at a predetermined angle to each other, the shape of the V-shaped groove and the plurality of workpieces. The shapes are matched, and in the step of placing the plurality of workpieces into the groove, adjacent sides of the plurality of workpieces respectively abut the two slopes of the groove. The spheronization method of claim 4, further comprising a step of removing the top block after the top block is pressed into the groove and tightly arranged.