JPS6126465B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wire-type processing machine, and an object of the present invention is to provide a wire-type processing machine that has a simple structure and is capable of precision processing a workpiece with high precision and high efficiency.

For example, there are several wire-type processing machines known that process hard materials by driving a fixed abrasive wire with abrasive grains fixed to the wire by electrodeposition. Processing is performed by pressing the workpiece against a fixed abrasive wire that moves back and forth. By the way, in this case, it is difficult to drive the fixed abrasive wire at high speed and precisely, so it is not suitable for precision machining of hard materials with high precision and high efficiency.

The present invention attempts to eliminate the above-mentioned conventional drawbacks by rotating a workpiece at high speed and precision and pressing a fixed abrasive wire thereon.
Examples will be described below with reference to the drawings.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A wire-type processing machine that is one embodiment of the present invention will be described with reference to FIGS. 1, 2, 3, and 4.

If the present invention is divided into three main parts, as shown in the figure, a workpiece rotation part A to which a workpiece is attached and rotated, a tool frame part B to which a fixed abrasive wire is attached, and a tool frame part B It is divided into a pressure contact mechanism section C for pressure contacting the workpiece to the workpiece.

First, the workpiece rotating section A will be explained.

Reference numeral 1 denotes a workpiece, which is attached around a workpiece attachment ring 2. The workpiece attachment ring 2 is fixed to the rotating shaft 3 with a nut 86 and can be easily attached or detached. The rotating shaft 3 is connected to two sets of combination bearings 4, an inner ring collar 5, an outer ring collar 6, two bearing holding plates 7, a washer 8, and two nuts 9 for adjusting the preload of the bearing 4.
It is held in a housing 10 and is configured to maintain sufficient rotational accuracy. housing 10
is fixed to the base 11.

Rotation transmission to the rotating shaft 3 consists of a driving pulley 12, a driven pulley 13, a belt 14, a motor 15, a motor mounting plate 16, and four mounting legs 17 for fixing the motor mounting plate 16 to the base 11.
The rotation speed can be changed by changing the ratio of the two pulleys. 18 is a side plate.

Next, the tool frame portion B will be explained.

19 is a fixed abrasive wire, and a pair of rollers 2 have a plurality of grooves in parallel and at the same pitch so that many workpieces 1 can be cut at the same thickness at once.
0 multiple times, and one end is wound on the winding reel 2.
1, and the other end is a wire tension adjustment plate 22.
The supply reel 9 is inserted through the hole (not shown) provided in the
It is wrapped around 1. The roller 20 is the housing 2
3 with two screws 24 and is removable. The housing 23 is connected to the fixed shaft 3 via two sets of combination bearings 25, an inner ring collar 26, an outer ring collar 27, and bearing retainers 28 and 29.
Easily rotates around 0. However, the bearing presser 29 and the fixed shaft 30 are fixed with a screw 31 so that the roller 20 does not rotate during processing, that is, when the fixed abrasive wire 19 is pressed against the workpiece 1. The washer 32 and two nuts 33 are used to adjust the preload of the bearing 25. The fixed shaft 30 is fixed to the lower base 34 with screws. Reference numeral 35 denotes a support column, which is similarly fixed to the lower base 34 with screws. Further, the upper ends of the fixed shaft 30 and the support column 35 are fixed to an upper base 36 with nuts 37. 38 is a washer. The take-up reel 21 is fixed to a shaft 39, and the shaft 39 is held by a bearing 40 so as to rotate easily. However, the shaft 39 is fixed to the bearing 40 with a screw 41 so that the tension of the fixed abrasive wire 19 does not loosen during processing. 42 is a knob, and the take-up reel 2
It is for rotating 1.

The wire tension adjustment plate 22 has a spring ring 43
After adjusting the tension of the fixed abrasive wire 19, in other words, in order to keep the tension of the fixed abrasive wire 19 constant during processing, a wire tension adjustment plate is provided. 22
The wire tension adjusting plate 22 is fixed to a fixing plate 90 fixed to the lower base 34 using two fixing knobs 45 so that the wire tension adjusting plate 22 can be fixed. One end of the spring 44 is held by a spring hanging pin 46 and a spring fixing plate 47 fixed to the lower base 34.

Further, the wire tension adjusting plate 22 and the fixed abrasive wire 19 are fixed using two screws 48. The supply reel 91 is rotatably held by a universal joint 49 fixed to the lower base 34 via a nut 50 so that the fixed abrasive wire 19 can be easily supplied.

The method of operating tool frame B will be explained.

When the fixed abrasive wire 19 is pressed against the workpiece 1, the parts of the fixed abrasive wire 19 that are worn out due to abrasive grains falling off, etc. are sequentially replaced with unworn parts (new wires), and the parts of the fixed abrasive wire 19 that are worn out due to falling off of the abrasive grains are sequentially replaced with unworn parts (new wires). By pressing the fixed abrasive wire 19 against the object 1, the fixed abrasive wire 19 can be used evenly and effectively, and its operation is carried out by following the steps below.

(1) Loosen the screw 41 fixing the shaft 39 of the take-up reel 21 and the bearing 40.

(2) Loosen the screw 31 fixing the bearing retainer 29 and the fixed shaft 30 to allow the roller 20 to rotate freely.

(3) Loosen the two screws 48 that fix the wire tension adjustment plate 22 and the fixed abrasive wire 19.

(4) Turn the knob 42 of the take-up reel 211,
The fixed abrasive wire 19 is fed while feeding out a new wire from the supply reel 91.
The new wire part that is not worn out is the workpiece 1.
so that it is pressed against the

(5) Tighten the screw 41 to fix the shaft 39 and bearing 40.

(6) Tighten the screw 48 to fix the fixed abrasive wire 19 to the wire tension adjustment plate 22.

(7) Loosen the two fixed knobs 45 to allow the wire tension adjustment plate 22 to move freely, and apply tension to the fixed abrasive wire 19 using the spring 44.

(8) Tighten the two knobs 45 to fix the wire tension adjustment plate 22.

Next, the pressure contact mechanism section C will be explained.

51 is an arm, which is the lower base 3 of the tool frame portion B;
4 and the upper base 36 are fixed with screws, and can be easily rotated around a fixed shaft 52. 53
is a housing with two sets of mating bearings 5
4. Rotates around the fixed shaft 52 via an inner ring collar 55, an outer ring collar 56, two bearing holders 57, a washer 58 for adjusting the preload of the bearing, and two nuts 59.

The housing 53 and the arm 51 are fitted with a spacer 60 so that the center line of the fixed shaft 52 and the grinding part of the fixed abrasive wire 19 stretched between the pair of rollers 20 of the tool frame part B are on the same plane. Fixed through.

A weight 61 is used to press the fixed abrasive wire 19 against the workpiece 1 with a constant force. Rotate.

65 is a pulley for guiding the wire 62, 66 is a resin washer, 67 is a shaft (broken line), 68 is a shaft fixing plate,
A damper 69 is used to prevent vibration of the fixed abrasive wire 19 during processing, and is connected to the arm fixing plate 64 via a mounting plate 70, a mounting pin 71, and two E-rings 72. . 73 is a damper fixing base. Reference numeral 74 denotes a stopper for the entire pressure contact mechanism, which is fixed to the base 11. Reference numeral 75 denotes an arm fixing pin for stopping the rotation of the entire press-contacting mechanism, and is fitted into a hole 92 provided in the arm 51 when not being processed. A fixing base 76 holds the fixing pin 75. 77 is an E-ring.

Next, the operating method during processing will be explained.

(1) Attach the workpiece 1 around the workpiece attachment ring 2.

(2) Attach the workpiece attachment ring 2 to the rotating shaft 3.

(3) The rotating shaft 3 is rotated by the motor 15.

(4) Remove the arm fixing pin 75 from the arm 51 and press the fixed abrasive wire 19 against the workpiece 1.

(5) After machining is complete, reverse the above procedure.

In addition, when the fixed abrasive wire 19 becomes worn out, operate it in the same way as the operation method for the tool frame B described above.
A fixed abrasive wire 19 is used effectively. Furthermore, when replacing the fixed abrasive wire 19, the tool frame section B is removed from the pressure contact mechanism section C and replaced.

Next, a wire type processing machine which is another embodiment of the present invention will be explained using FIG.

In the above embodiment, the fixed abrasive wire wound around the pair of rollers in the tool frame B was made of a single wire wound multiple times, but in this embodiment, a ring-shaped fixed abrasive wire was used. A plurality of rollers are arranged around a pair of rollers.

Now, in the case of a single wire, tension was applied from both ends of the wire, but in this case, tension is applied by rotating one of the pair of rollers in an eccentric state. More specifically, as shown in the figure, one of the pair of rollers 20 on which a plurality of ring-shaped fixed abrasive wires 85 are applied rotates around the axis a of the eccentric shaft 78. One end of the eccentric shaft 78 is connected to the lower base 34
The thrust direction is regulated and held by a bearing 79 fixed to, a washer 80, and two nuts 81. The other end of the eccentric shaft 78 is the upper base 36
It is held by a bearing 82 fixed to. 8
3 is a knob for rotating the eccentric shaft 78 and applying tension to the ring-shaped fixed abrasive wire 85, and two screws 84 are for fixing the eccentric shaft 78 to the bearings 79 and 82. The eccentric shaft 78 rotates around the axis b, that is, around the two bearings 79 and 82. With this configuration, mechanisms such as a take-up reel and a supply reel are not required. Note that the attachment to the pressure contact mechanism section C is the same as in the one embodiment described above.

Next, the operating method will be explained.

When the fixed abrasive wire 19 is pressed against the workpiece 1, the parts of the fixed abrasive wire 19 that have been worn out due to abrasive grains falling off, etc. are sequentially replaced with new unused wires, and the fixed abrasive wire 19 is pressed against the workpiece 1. (1) Loosen the two screws 31 and allow the roller 20 to rotate.

(2) Rotate the roller 20 to move the position of the ring-shaped fixed abrasive wire 85 so that the new wire portion comes into pressure contact with the workpiece 1.

To replace the ring-shaped fixed abrasive wire 85, (1) Remove the entire tool frame B from the pressure welding mechanism C.

(2) Loosen the screw 84 that fixes the knob 83 and the bearing 82.

(3) Turn the knob 83 to remove the tension on the fixed abrasive wire 84.

(4) Remove the knob 83 from the eccentric shaft 78.

(5) Loosen the three nuts 37 and remove the upper base 36.

(6) Place the ring-shaped fixed abrasive wire 85 on the roller 2.
Remove it from 0 and replace it with a new ring-shaped fixed abrasive wire.

(7) Perform the reverse operation.

As described above, according to the present invention, by rotating the workpiece at high speed and pressing the fixed abrasive wire into contact with the workpiece, it is possible to grind and cut the workpiece with high precision and high efficiency. Furthermore, it has the following advantages.

(1) By adding a damper, it is possible to reduce the vibration of the fixed abrasive wire even when cutting intermittently, making it difficult for chopping to occur on the workpiece and reducing the number of damaged layers.

(2) By wrapping one fixed abrasive wire around a pair of rollers with multiple precision grooves, it is possible to grind and cut many workpieces at the same time.

(3) By making a pair of rollers with multiple grooves rotatable and providing a winding and feeding mechanism for the fixed abrasive wire, the part of the wire that is worn out due to abrasive grains falling off, etc. of the fixed abrasive wire can be reduced. The fixed abrasive wire can be used effectively.

(4) By making it possible to separate the tool frame around which the fixed abrasive wire is wound and the pressure welding mechanism, it is easy to replace the fixed abrasive wire.

(5) By connecting both ends of the fixed abrasive wire to the take-up reel and the supply reel, and fixing these reels,
Tension can be easily applied from both ends of the fixed abrasive wire.

(6) By placing a plurality of ring-shaped fixed abrasive wires around a pair of rollers having a plurality of grooves, it is possible to simultaneously cut a large number of workpieces.

(7) By attaching a ring-shaped fixed abrasive wire to a pair of rotatable rollers having a plurality of grooves, parts of the ring-shaped fixed abrasive wire that are worn out due to abrasive grains falling off, etc., are sequentially fed. New wire can be fed out, and can be used evenly and effectively over the entire circumference of the ring-shaped fixed abrasive wire.

(8) By providing an eccentric shaft on one side of a pair of rollers having a plurality of grooves and rotating this eccentric shaft, tension can be applied to the ring-shaped fixed abrasive wire.

[Brief explanation of the drawing]

Fig. 1 shows a wire-type processing machine which is an embodiment of the present invention, and is a partially sectional front view showing a state in which a workpiece is being cut, and Fig. 2 is a plan view showing the same state. FIG. 3 is a side view showing the same state, FIG. 4 is a partially sectional front view of the tool frame in the processing machine, and FIG. 5 is a wire-type processing machine according to another embodiment of the present invention. FIG. 6 is a partially sectional front view of the tool frame when a shaped fixed abrasive wire is used. A...Workpiece rotation part, B...Tool frame part, C...
... Pressure welding machine department, 1 ... Workpiece, 3 ... Rotating shaft,
15...Motor, 19...Fixed abrasive wire, 20
...Roller, 21...Take-up reel, 22...
Wire tension adjustment plate, 51... Arm, 52... Fixed shaft, 61... Weight, 78... Eccentric shaft, 85...
Ring-shaped fixed abrasive wire, 91...supply reel.

Claims (1)

[Scope of Claims] 1. A rotating part that rotates while holding a workpiece on its outer peripheral surface, and a core part with abrasive grains bonded thereto, supported by a pressure welding mechanism part, and which is operated by the action of the pressure welding machine part. A tool part having a linear grinding tool for grinding the workpiece by press-contacting the workpiece held on the outer peripheral surface, and a means for preventing vibration of the linear grinding tool provided in the pressure-welding mechanism part. The tool section is configured to be separable from the pressure welding mechanism section, and the tool section includes a single linear grinding tool wound multiple times around a pair of rollers having a plurality of grooves along the outer periphery. The pair of rollers is made rotatable, and both ends of the linear grinding tool are connected to the winding section of the winding means and the supply section of the supply means, respectively, and the parts worn out by the pressure welding of the linear grinding tool are removed. A wire-type processing machine characterized by being configured so that updates can be made sequentially with new wire sections, and a winding section and a supply section are each fixed. 2. A plurality of ring-shaped linear grinding tools are attached to a pair of rollers having multiple grooves along the outer periphery, the pair of rollers are made rotatable, and the worn parts of the linear grinding tools are sequentially replaced with new line parts. Claim 1 characterized in that the linear grinding tool is configured to be able to be updated, one of the pair of rollers is supported by an eccentric shaft, and tension is applied to the linear grinding tool by rotating this eccentric shaft. Wire-type processing machine described in section.