KR100586563B1 - Superfinisher and control system of superfinisher - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an ultra precision polishing machine in which a film abrasive is used and the polishing operation is performed automatically and a control system thereof.

Ultra-precision polishing machine and the control system according to the present invention, the cooling water supply step of supplying the cooling water to the surface of the workpiece (S200), and the tension adjusting step (S210) to adjust the film polishing material 170 to have a constant tension (tension) And, the rocking step (S220) to rock the film polishing material 170 to the left and right, the contact step (S230) to make the film polishing material 170 rocking to the left and right to contact the workpiece surface, and the film polishing material 170 The polishing step (S240) of polishing the workpiece by, the retraction step (S250) of separating the film abrasive material 170 from the workpiece, the cooling water stop step (S260) of blocking the cooling water, and the film polishing material (170) of A rocking stop step (S270) to stop the left and right swing, the film blocking step (S280) to stop the supply of the film abrasive material 170, and the tension release to release the tension (tension) applied to the film abrasive material 170 Step S300 and the like, the Each step is done automatically. According to such a configuration, it is possible to precisely polish and there is an advantage that the polishing operation is convenient.

Grinding Machine, High Precision, Film Grinding, Automatic, Control System

Description

Super Precision Polishing Machine and Control System {Superfinisher and Control system of superfinisher}

1 is a perspective view showing a state of use of the polishing machine according to the prior art.

Figure 2 is a perspective view showing the configuration of a preferred embodiment of the ultra-precision polishing machine according to the present invention.

3 is a right side view of the ultra-precision polishing machine shown in FIG.

4 is a plan view showing a main portion of the interior of the ultra-precision polishing machine shown in FIG.

Figure 5 is a schematic state diagram showing the state of use of the film abrasive material constituting a preferred embodiment of the ultra-precision polishing machine according to the present invention.

6 is a flowchart showing a sequence in which the grinding machine is automatically operated by the ultra-precision grinding machine control system according to the present invention.

7 is a flowchart showing a sequence in which the polishing machine is automatically stopped by the ultra-precision polishing machine control system according to the present invention.

Explanation of symbols on the main parts of the drawings

100. Support plate 110. Support frame

120. Feed roller 122. Feed motor

124. Supply shaft 126. Recovery roller

130. First support roller 132. Second support roller

134. Third support roller 136. Fourth support roller

140. Swinging device 142. Contact roller

144. Forward and backward movement means 146. Oscillating plate

150. Oscillating means 152. Cam motor

154.Eccentric Cam 156.Connector

158. Camshaft 160. Retaining Plate

170. Film abrasive 180. Coolant pipe

S200. Cooling water supply step S210. Tension Control Stage

S220. Rocking stage S230. Contact stage

S240. Polishing step S250. Retreat Stage

S260. Cooling water stop step S270. Rocking stop

S280. Film blocking step S300. Tension release stage

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polishing machine, and more particularly, to a super precision polishing machine and a control system in which a film polishing material is used and polishing is automatically performed.

In general, polishing means a finishing method of improving the quality of a workpiece by grinding and polishing the surface of the workpiece using granular or powdery materials having high hardness.

In general, a conventional grinding operation is performed by using a grindstone, the processing method using the grindstone particles collectively referred to as grindstone grain processing.

That is, the conventional grinding machine has a configuration in which a circular grindstone 20 is mounted and rotated on a rotation shaft 10 of a motor (not shown), as shown in FIG. 1. Therefore, in the state in which the user grips the workpiece 30 by hand, the workpiece 30 is polished by contacting the circumferential surface of the grindstone 20.

As such, when the user directly touches the workpiece 30 to the abrasive grindstone 20 to perform polishing, it is difficult to precisely grind the work and there is a problem that a safety accident occurs.

In addition, in order to solve the above problems, it is proposed to use the polishing in a state where the workpiece 30 is mounted on a jig (not shown) that can be artificially moved left and right. The risk was reduced but precise grinding was difficult.

Accordingly, an object of the present invention is to solve the problems of the prior art as described above, and to provide an ultra-precision polishing machine that can perform fine polishing operations using a film abrasive.

Another object of the present invention is to provide a control system for an ultra-precision polishing machine, which enables the ultra-precision polishing machine in which a film abrasive is used to be automatically operated.

The ultra-precision polishing machine according to the present invention for achieving the above object includes a support frame in which a plurality of parts are embedded; A film abrasive material in contact with the workpiece to polish the workpiece surface; A protruding roller formed on one side of the support frame to supply the film abrasive; A recovery roller which protrudes on one side of the support frame and recovers the film abrasive used for polishing the workpiece; A plurality of support rollers protruding from one side of the support frame and supporting the film abrasive material supplied from the supply rollers and moving to the recovery rollers; A swinging device which is installed at one side of the support frame and flows from side to side, and includes a contact roller for allowing the film polishing material to contact the surface of the workpiece, and a forward and backward movement means for forcibly moving the contact roller back and forth; Rocking means provided on one side of the rocking device and forcing the rocking device to rock left and right; Cooling water supply means for supplying cooling water to the surface of the workpiece to be processed in contact with the film polishing material; It characterized in that it has a configuration including a control unit for controlling the cooling water supply means, the rocking means and the back and forth movement means sequentially and continuously.

The rocking means is characterized in that it comprises a cam motor for providing rotational power and a cam (rotated) by the cam motor.

The front and rear movement means is characterized by having a configuration including a hydraulic cylinder connected to the rear side of the contact roller.

One side of the recovery roller is characterized in that the recovery motor is installed to control the rotation of the recovery roller.

The outer peripheral surface of the contact roller is characterized in that the elastic member of the rubber material is provided.

The left and right oscillation distance of the oscillation device flowing left and right by the oscillation means is characterized in that more than 1mm.

The left and right oscillation distance of the oscillation device flowing left and right by the oscillation means is characterized in that 5 to 7mm.

In addition, the control system of the ultra-precision polishing machine according to the present invention, the cooling water supply step of supplying the cooling water to the surface of the workpiece, the tension control step of adjusting the film polishing material to have a constant tension (tension), and the film polishing material swings left and right And a contacting step for causing the film polishing material that swings from side to side to the workpiece surface, and a polishing step for polishing the workpiece by the film polishing material, wherein each step is performed simultaneously or sequentially. It is characterized by automatic enforcement.

The rocking step is characterized in that the part of the film polishing material to linearly reciprocate left and right by the rotational movement of the cam (cam).

In addition, the control system of the ultra-precision polishing machine according to the present invention includes a polishing step of polishing a workpiece by a film abrasive, a retreat step of separating the film abrasive in contact with the workpiece from the workpiece, and blocking the cooling water supplied to the surface of the workpiece. It comprises a cooling water stopping step, the rocking stop step of stopping the left and right rocking of the film polishing material, and the film blocking step of stopping the supply of the film polishing material, each step is characterized in that it is automatically carried out simultaneously or sequentially It is done.

And after the film blocking step is characterized in that the tension release step of releasing the tension (tension) applied to the film polishing material is further performed.

The tension release step is characterized in that it is carried out after 10 seconds or more after the implementation of the film blocking step.

According to the ultra-precision polishing machine and the control system according to the present invention having such a configuration, it is possible to precise polishing and the polishing operation is convenient.

Hereinafter, exemplary embodiments of the present invention as described above will be described in detail with reference to the accompanying drawings.

2 and 3 are a perspective view and a right side view of the ultra-precision polishing machine according to the present invention, respectively, FIG. 4 is a plan view showing the internal configuration of the ultra-precision polishing machine according to the present invention, and FIG. 5 is the ultra-precision according to the present invention. The mounting state of the film polishing material constituting the polishing machine is schematically shown.

As shown in these figures, the support plate 100 is provided at the lower side before and after, and the support plate 100 is configured to be mounted on a lathe or another machine tool.

On the upper side of the support plate 100 is formed a support frame 110 in which a plurality of parts are built. The support frame 110 has a box shape in which a predetermined space is formed therein, and a plurality of parts such as an eccentric cam 154 and a controller (not shown) are described below in the support frame 110. Is installed.

The supply roller 120 protrudes from the right side of the support frame 110. The supply roller 120 is for supplying the film abrasive material 170 to be described below, is formed in a cylindrical shape, the film polishing material 170 is wound on the outer circumferential surface a plurality of times.

The supply motor 122 is installed on the left side of the supply roller 120. The supply motor 122 is to provide rotational power to the supply roller 120, it is installed inside the support frame 110. The supply motor 122 is installed at the same position as the supply roller 120, is connected to each other by the supply shaft 124 is a rotational force is transmitted.

A recovery roller 126 is installed below the supply roller 120. The recovery roller 126 recovers the film abrasive material 170 used to polish the workpiece. The recovery roller 126 is formed in a cylindrical shape like the supply roller 120, and the film abrasive material 170 is wound around the outer circumferential surface thereof. And a recovery motor (not shown) corresponding to the supply motor 122 is installed on the left side of the recovery roller 126 to provide rotational power to the recovery roller 126.

A plurality of support rollers 130, 132, 134 and 136 are further installed on the right side of the support frame 110 to support the film polishing material 170 which is supplied from the supply roller 120 and moves to the recovery roller 126. That is, the first support roller 130 is installed in front of the supply roller 120, the second support roller 132 is installed in front of the recovery roller 126. And the rocking device 140 to be described below is provided with a third support roller 134 and a fourth support roller 136, respectively. The support rollers 130, 132, 134 and 136 are rotatably installed to support the film polishing material 170 to be described below to smoothly flow.

A rocking device 140 capable of moving from side to side is installed at the right end portion of the support frame 110. The rocking device 140 is provided with a contact roller 142 for supporting the film polishing material 170, which will be described below, in contact with the workpiece surface, and provided above and below the contact roller 142 to the contact roller 142. Third and second supporting rollers 134 and fourth supporting rollers 136 for supporting the film polishing material 170 supplied or passed through the contact rollers 142, and the front and rear movement means for forcing the forward and backward movement of the contact rollers 142. 144 and a swing plate 146 supporting both ends of the contact roller 142, the third support roller 134, and the fourth support roller 136.

The contact roller 142 is protruded to the top of the swinging device 140, the film polishing material 170 to be described below is supported on the front of the contact roller 142 to polish the workpiece. The outer peripheral surface of the contact roller 142 is provided with an elastic member. That is, the outer peripheral surface of the contact roller 142 is provided with an elastic member such as a rubber material is configured to prevent the sliding of the film polishing material 170.

At both ends of the contact roller 142, the roller mounting portion 142 'is further provided before and after. The roller mounting portion 142 ′ is installed to slide with the swing plate 146 and is connected to the front and rear movement means 144. Therefore, when the roller mounting portion 142 'is moved back and forth by sliding with the swing plate 146 according to the operation of the front and rear movement means 144, the contact roller 142 is moved back and forth to selectively contact with the workpiece.

The front and rear movement means 144 is installed on the rear side of the contact roller 142 is made of a hydraulic cylinder to move the contact roller 142 to a predetermined portion back and forth. The hydraulic cylinder has a structure for converting the pressure energy of the fluid into mechanical energy of linear motion type, where air is used as the fluid. Since the structure and function of the hydraulic cylinder as described above are generally known, a detailed description thereof will be omitted.

The left and right rocking plates 146 are integrally coupled to each other by the connecting portion 148. The connecting portion 148 is formed of a hollow shaft having an empty central portion, and a fixed shaft 162 integrally formed on the fixing plate 160 to be described below is installed inside the connecting portion 148.

On the left side of the rocking device 140 is provided with rocking means 150 for forcing the rocking device 140 to rock left and right. The rocking means 150 is provided in the support frame 110, the cam motor 152 for providing rotational power, the eccentric cam (154, cam) rotated by the cam motor 152 and such It consists of a connector 156 and the like to convert the rotational movement of the eccentric cam 154 to a linear movement to transmit to the swinging device (140).

The rotational force of the cam motor 152 is transmitted to the eccentric cam 154 by the cam shaft 158, one end of the connector 156 is on the eccentric shaft 158 'which is formed eccentrically with the cam shaft 158. Connection is installed. In addition, the connector 156 is rocking plate 146 of the rocking device 140 is installed is configured to swing left and right in conjunction with the rotational movement of the eccentric cam 154.

The fixing plate 160 is formed at a right distance from the right side of the support frame 110. The fixing plate 160 is fixed to the support frame 110 by a fixed shaft 162 formed at the front and rear ends, respectively, and swings to form the swinging device 140 on the outside of the fixed shaft 162. The connection 148 of the plate 146 is located. Therefore, the swinging device 140 is guided by the fixed shaft 162 to swing left and right.

That is, since the connecting portion 148 is wrapped around the front fixed shaft 162 of the front and rear fixed shafts 162 as shown in FIG. 4, the fixed shaft 162 and the connecting portion 148 are slid. As a result, the swinging device 140 performs a linear reciprocating motion from side to side.

The left and right oscillation distance of the oscillation device 140 which flows from side to side by the oscillation means 150 is configured to be at least 1 mm or more, and more preferably about 5 mm to 7 mm.

A plurality of film abrasives 170 are wound around the supply roller 120. Abrasives are materials that have a very high hardness and toughness used for polishing, and are also called grinding materials. The abrasive is in the form of granules or powders and should be chosen to have a higher Moss or Vickers hardness than the object being polished.

The film abrasive 170 is a kind of abrasive having a film form, and since abrasive particles are uniformly applied, it is possible to form a uniform surface roughness and has excellent grinding power.

The film polishing material 170 is the third support roller 134 and the contact roller 142 and the fourth support from the supply roller 120 through the first support roller 130 as shown in detail in FIG. The roller 136 is sequentially in contact with the roller, and passes through the second supporting roller 132 and then wound around the recovery roller 126.

The film polishing material 170 is tensioned by the supply motor 122 and the recovery motor (not shown) to have a suitable tension, protrudes forward by the contact roller 142 to the workpiece Polish the workpiece in contact with the surface. That is, the film polishing material 170 is polished the workpiece while moving from the supply roller 120 to the recovery roller 126 at a constant speed.

On the other hand, although not shown, the inner or outer side of the support frame 110 is further provided with a cooling water supply means for supplying the cooling water to the surface of the workpiece to be processed in contact with the film polishing material 170, such as a cooling water motor. The cooling water supply means serves to cool the heat by supplying the cooling water to the contact portion of the film abrasive 170 and the workpiece, and the cooling water pipe 180 serving as a passage of the cooling water is bent to the side of the support frame 110. (bending) is installed.

The outer side of the support frame 110 is further provided with a controller (not shown) in which a plurality of electrical components are built. The controller (not shown) controls the operation of each of the components described above, and in particular, controls the cooling water supply means, the rocking means 150 and the front and rear movement means 144 to be continuously operated sequentially.

That is, when the ultra-precision polishing machine having the above configuration is automatically operated, the cooling water supply means first operates to supply the cooling water, and then the swinging means 150 is operated so that the rocking device 140 swings left and right. After the movement, the contact roller 142 is moved forward by the front and rear movement means 144 to be in contact with the workpiece to control the polishing operation. The role of the controller will be described in more detail below.

Hereinafter, the operation and control system of the ultra-precision polishing machine having the above configuration will be described.

First, when power is applied to the ultra-precision polishing machine from the outside, the user operates the ultra-precision polishing machine by operating a plurality of operation buttons provided on the control panel (not shown). In this case, the user may select 'manual mode' and 'automatic mode'. Hereinafter, the case of operating in the 'automatic mode' will be described with reference to FIG. 6.

As schematically shown in the flow chart in Figure 6 when the equipment is operated by the 'automatic mode' first cooling water supply step (S200) is carried out. At this time, the coolant motor (not shown) is operated according to the command of the controller (not shown) to supply the coolant through the coolant pipe 180, and the coolant wets the surface of the workpiece.

Next, the tension control step (S210) for adjusting the film polishing material 170 to have a constant tension (tension) is carried out. At this time, the supply motor 122 and the recovery motor (not shown) is operated so that the film polishing material 170 has an appropriate tension. That is, the feed motor 122 and the recovery motor (ie, the feed roller 120 and the plurality of support rollers and the contact roller 142 and the recovery roller 126 on the film polishing material 170 have an appropriate tension set). Not shown) rotates.

Subsequently, the rocking step (S220) is performed to rock the film abrasive 170 to the left and right. This causes the rocking device 140 to be guided by the fixed shaft 162 to flow from side to side, and the flow of the rocking device 140 is made by the rocking means 150. That is, when the eccentric cam 154 is rotated by the rotation of the cam motor 152, the connector 156, one end of which is connected to the eccentric cam 154 flows left and right, and thus is connected to the connector 156 The rocking device 140 is rocked from side to side, so that a part of the film polishing material 170 (film polishing material near the contact roller) swings side to side.

If the swinging device 140 flows from side to side as described above, a contact step S230 is next performed. The contact step (S230) is a step in which the film polishing material 170 swinging from side to side is in contact with the workpiece surface, in which the roller mounting portion 142 'by the hydraulic cylinder constituting the front and rear movement means 144 Move forward. Therefore, the contact roller 142 is moved a predetermined distance forward to the film polishing material 170 is in contact with the surface of the workpiece.

As such, when the contact roller 142 moves to the front, the film polishing material 170 is in contact with the workpiece to perform a polishing step (S240) for polishing. That is, the film abrasive 170 is in contact with the surface of the workpiece to process the workpiece.

As the above process is carried out automatically, the work of polishing the workpiece is made, and each of the above steps is preferably performed sequentially. That is, each step is performed sequentially with a small time interval. Of course, it is also possible to program such steps to be performed simultaneously.

After the polishing operation is performed by the above process, the operation of the ultra-precision polishing machine is stopped and the operation is completed. This process is illustrated by a flowchart in FIG.

As shown in the figure, after the processing of the workpiece is completed by the implementation of the polishing step (S240), when the user operates to stop by the 'automatic mode', the film abrasive material 170 in contact with the workpiece is separated from the workpiece Retreat step (S250) to proceed.

At this time, the contact roller 142 retreats backward by the front and rear movement means 144. That is, the roller mounting portion 142 ′ slides with the oscillation plate 146 by the operation of the hydraulic cylinder constituting the front and rear movement means 144 so that the contact roller 142 retreats backward. In this case, the film abrasive material 170 supported on the tip of the contact roller 142 is spaced apart from the workpiece.

Next, the cooling water stop step (S260) is carried out. At this time, the operation of the cooling motor (not shown) that supplies the cooling water through the cooling water pipe 180 is stopped.

The left and right swings of the swinging device 140 are stopped in succession. [Swinging stop step; S270] The swinging stop step (S270) is performed by the swinging means (150). That is, when the cam motor 152 is stopped, since the rotation of the eccentric cam 154 is stopped, the left and right flow of the swinging device 140 connected to the eccentric cam 154 is stopped.

When the rocking device 140 is stopped, the supply of the film abrasive material 170 is stopped. [Film cutting step; S280] The film blocking step (S280) is the supply motor 122 and the recovery motor (not shown) ) Stop.

When the supply of the film polishing material 170 is stopped, the control unit (not shown) next counts whether the set time T has elapsed (S290).

After the set time T has elapsed, the tension release step S300 of releasing the tension applied to the film abrasive 170 is performed. That is, the tension applied to the film abrasive 170 is removed by the operation of the supply motor 122 and the recovery motor (not shown).

As described above, the tension release step (S300) is preferably performed after a predetermined time (about 10 seconds to about 30 seconds) after the implementation of the film blocking step (S280). This is to prevent damage to the workpiece and the film abrasive 170. That is, when the supply of the film abrasive material 170 is stopped by the film blocking step (S280), the film abrasive material 170 is stretched, and when the tension applied to the film abrasive material 170 is removed at the same time, the film abrasive material This is because the loosening of 170 may affect the roughness of the workpiece in contact with the surface of the workpiece that has already been processed, and may also cause damage to the film abrasive 170 itself. Therefore, the tension release step (S300) should be carried out when at least 10 seconds or more after the implementation of the film blocking step (S280), more preferably after about 30 seconds.

When the tension release step (S300) as described above is completed, the operation of the ultra-precision polishing machine according to the present invention is completed, so that the user can replace the film polishing material 170 or continue to perform other polishing operations.

And the above steps for the stop of the ultra-precision polishing machine according to the present invention is preferably made sequentially at regular time intervals, it is also possible to configure so that each step is carried out at the same time.

The scope of the present invention is not limited to the above-exemplified embodiments, and many other modifications based on the present invention will be possible to those skilled in the art within the above technical scope.

As described above, according to the present invention, a film abrasive is used for polishing a workpiece. Therefore, the roughness of the workpiece surface is improved compared to the conventional grinding wheel operation. That is, since the processing is performed by the film abrasive having a narrow particle distribution, there is an advantage that the processing precision is improved.

In addition, the ultra-precision polishing machine and its control system according to the present invention can perform the polishing operation automatically. Therefore, since the non-uniformity of the surface roughness of the workpiece caused by manual work is eliminated, the quality is improved, and the working speed is improved. In addition, there is an advantage in reducing the risk of safety accidents that are a problem at hand.

Claims (12)

delete delete A support frame 110 in which a plurality of parts are embedded; A film abrasive material 170 which contacts the workpiece to polish the workpiece surface; A supply roller 120 protruding from one side of the support frame 110 to supply the film polishing material 170; A recovery roller 126 protruding from one side of the support frame 110 to recover the film abrasive material 170 used to polish the workpiece; A plurality of support rollers 130, 132, 134 and 136 protruding from one side of the support frame 110 to support the film abrasive material 170 supplied from the supply roller 120 and moved to the recovery roller 126; It is installed on one side of the support frame 110 and flows to the left and right, the contact roller 142 and the front and rear movement forcing the front and rear movement of the contact roller 142 and the film polishing material 170 in contact with the workpiece surface A rocking device (140) provided with means (144); The eccentric cam 154 rotated by the cam motor 152 and the cam motor 152 provided on one side of the rocking device 140 to force the rocking device 140 to rock left and right and provide rotational power. Rocking means 150 is provided; Cooling water supply means for supplying the cooling water to the surface of the workpiece to be processed in contact with the film abrasive 170; It has a configuration including a control unit for controlling the cooling water supply means, the rocking means (150) and the front and rear movement means (144) sequentially and continuously operated; The front and rear movement means (144) is a high precision grinding machine, characterized in that it comprises a hydraulic cylinder connected to the rear side of the contact roller (142). The ultra-precise grinding machine according to claim 3, wherein a recovery motor is installed at one side of the recovery roller (126) to control the rotation of the recovery roller (126). The ultra-precision polishing machine according to claim 4, wherein the outer peripheral surface of the contact roller (142) is provided with an elastic member made of rubber material. The ultra-precision polishing machine according to claim 3, wherein the left and right oscillation distances of the oscillation device (140) flowing left and right by the oscillation means (150) are 1 mm or more. The ultra-precision polishing machine according to claim 6, wherein the left and right oscillation distances of the oscillation device (140) flowing left and right by the oscillation means (150) are 5 to 7 mm. delete delete Polishing step (S240) for polishing the workpiece by the film polishing material 170, A retraction step (S250) of separating the film abrasive material 170 in contact with the workpiece from the workpiece; Cooling water stop step (S260) for blocking the cooling water supplied to the surface of the workpiece, A rocking stop step (S270) of stopping the left and right rocking of the film polishing material 170, Has a configuration including a film blocking step (S280) for stopping the supply of the film polishing material 170, Wherein each step is carried out simultaneously or sequentially automatically. The control system of claim 10, wherein a tension release step (S300) for releasing a tension applied to the film abrasive material (170) is further performed after the film blocking step (S280). 12. The control system according to claim 11, wherein the tension release step (S300) is performed after 10 seconds or more after the film blocking step (S280).

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