CN104511818B - Feed-type eccentric adjustable automatic polishing device - Google Patents

Abstract

The invention discloses a feed-type eccentrically adjustable automatic polishing device, which comprises a supporting mechanism, a feeding mechanism arranged above the supporting mechanism and an eccentrically adjustable polishing mechanism. The automatic polishing operation adopts the design concept of mechatronics, and uses the first motor to cooperate with the lead screw to realize the feeding movement of the push plate; uses the second motor to drive the eccentric adjustable polishing mechanism to realize the eccentric rotation through the transmission of the synchronous belt; The grinding machine drives the grinding head to complete the high-speed polishing rotation. In general, the present invention provides a feasible solution for metal surface polishing. The whole set of equipment has low manufacturing cost and high cost performance, and is especially suitable for the needs of domestic small and medium-sized enterprises, and has a good market prospect.

Description

A feed type eccentric adjustable automatic polishing device

technical field

The invention relates to a polishing device, in particular to a feed type automatic polishing device with adjustable eccentricity.

Background technique

Polishing refers to the use of mechanical, chemical or electrochemical methods to reduce the surface roughness of the workpiece to obtain a bright and smooth surface. It is widely used in wood, handicrafts, plastic molds, metal hardware, automobile assembly, electronic parts and other manufacturing fields. .

Mechanical polishing refers to a polishing method that uses the cutting or grinding action of a tool or abrasive tool to remove defects such as burrs, rust, and oxide films on the surface of the workpiece. It has the advantages of simple operation and a wide range of applications. Taking the field of automobile manufacturing as an example, during the processing of auto parts, due to the rigidity of the tool, the cutting performance of the parts, etc., there are usually processing defects such as flashes and burrs on the cutting surface of the parts. The welding oxide layer is attached to the solder joints of the parts, and these processing defects such as flashes and burrs and the oxide layer of the solder joints need to be polished. At present, most of the domestic polishing methods are manual polishing, that is, workers hold polishing tools such as files and angle grinders for polishing operations; while western developed countries generally use expensive automatic manipulator polishing instead of manual polishing.

In addition to the field of automobile manufacturing, mechanical polishing is also used in other fields of mechanical processing. Take the manufacturing and processing of metal mesh belts as an example. Metal mesh belts are mesh conveyor belts made of metal materials and are widely used in food, medicine, electronics, and chemical , glass and other industries transportation production line. As shown in FIG. 3 , the metal mesh belt is composed of an elastic metal mesh 22 , a straight core 23 and a horseshoe-shaped chain piece 24 . During the manufacturing process, the welding points 25 at both ends of the straight core 23 need to be polished. The domestic existing technology is generally to manually hold the angle grinder clamping the bowl-shaped steel wire wheel to polish the solder joints 25 at the two ends of the straight core bone; while the foreign advanced technology is to clamp the metal mesh belt on the transmission equipment, by six The degree of freedom robot clamps the diamond grinding head for automatic polishing.

In general, there are the following defects in the polishing of solder joints and parts burrs in the prior art:

(1) The degree of automation of domestic polishing is low, and most of them use manual polishing. Due to the different levels of technical proficiency of workers, it is easy to cause missing or wrong throwing. The polishing quality is greatly affected by human factors, and the surface quality of the workpiece is unstable.

(2) The polishing operation produces a large amount of metal dust, which seriously affects the health of workers if inhaled for a long time, and the dust of magnesium, aluminum, iron and other materials in the metal is easy to burn and explode, which will threaten the life safety of workers.

(3) Traditional manual polishing is a labor-intensive operation. With the rise of domestic labor costs, problems such as recruitment, management difficulties, and rising manufacturing costs will gradually appear. Therefore, it is urgent to change this situation.

(4) Robots can be used abroad to achieve automatic polishing, but the capital investment is large. In addition to spending a huge amount of money to purchase equipment such as robots and automatic displacement devices, it is also necessary to master the automatic polishing technology of robots; moreover, the floating forward technology of the grinding head Being monopolized by foreign developed countries, the floating deburring power head still needs to be imported, and the import price remains high, which will inevitably require high maintenance costs, which is not suitable for the current development status of domestic small and medium-sized enterprises.

Contents of the invention

In order to solve the deficiencies of the prior art, the purpose of the present invention is to provide a feed type eccentrically adjustable automatic polishing device, which can complete the automatic polishing operation on the workpiece surface burr or solder joint oxide layer.

In order to achieve the above object, the present invention adopts the following technical solutions:

A feeding type eccentrically adjustable automatic polishing device, comprising a supporting mechanism, a feeding mechanism arranged above the supporting mechanism, and an eccentrically adjustable polishing mechanism;

Wherein, the support mechanism includes: a base, a guide rod support block and a guide rod, the guide rod support block is installed on the base, and the guide rod is connected between the guide rod support blocks;

Described feed mechanism comprises: a push plate, leading screw, leading screw nut, leading screw nut seat, leading screw seat and the first motor, described leading screw nut is fixed on the push plate end by leading screw nut seat, described The lead screw is fixed on the lead screw seat through a bearing and connected with the rotating shaft of the first motor through a coupling. A slider for cooperating with the guide rod is provided under the push plate, and the first motor drives the lead screw through the lead screw. The nut drives the push plate to slide on the guide rod;

The eccentric adjustable polishing mechanism includes: a second motor fixed below the push plate, a pair of bearing supports arranged above the push plate, a main shaft driven by the second motor, an adjustment block connected to the main shaft through an adjustment screw, An angle grinder and a polishing grinding head connected to the adjusting block, the adjusting block is formed with an inner groove through hole, and the eccentricity is adjusted by adjusting the installation position of the adjusting screw in the inner groove through hole, so that the polishing grinding head deviates from the main axis The axis rotates eccentrically.

Preferably, the aforementioned supporting mechanism further includes a motor base, and the first motor is mounted on the motor base.

Specifically, the aforementioned pair of bearing supports includes a first bearing support close to the polishing grinding head and a second bearing support away from the polishing grinding head, and a through hole for the lead screw to pass is formed on the second bearing support .

As a preference, there are four guide rod support blocks, which are symmetrically arranged on the base and are used to support and position the two guide rods.

Further, a spacer is also provided on the aforementioned base, and the motor seat and the lead screw seat are both installed on the spacer.

Furthermore, a first pulley is installed on the aforementioned push plate, and the second pulley connected to the rotating shaft of the second motor is connected with the first pulley through a synchronous belt, and the second motor drives the second pulley to drive the first pulley. The pulley drives the spindle to rotate.

Still further, the aforementioned first pulley is mounted on the main shaft through a flat key.

The benefits of the present invention are: (1), the present invention can replace workers to complete the automatic polishing operation of workpiece surface burr or solder joint oxide layer. In the actual operation process, workers only need to clamp the workpiece in the fixture or displace On the transfer device, the invention can complete the feeding automatic polishing operation, get rid of the influence of human factors, and greatly improve the stability of polishing quality. (2) The invention has a high degree of flexibility and can handle polishing operations in various situations. It is equipped with an eccentric adjustment mechanism, and the eccentricity of the polishing grinding head can be adjusted only by changing the position of the adjustment screw in the through hole of the inner groove of the adjustment block. Distance, to achieve eccentric rotation, and the polishing grinding head of the present invention can also be replaced according to the characteristics of the material to be polished. (3), the present invention adopts the design concept of mechatronics. Use the first motor to cooperate with the lead screw to realize the feeding movement of the push plate; use the second motor to drive the eccentric adjustable polishing mechanism to realize the eccentric rotation through the transmission of the synchronous belt; use the angle grinder to drive the grinding head to complete the high-speed polishing rotation. In general, the present invention provides a feasible solution for metal surface polishing. The whole set of equipment has low manufacturing cost and high cost performance, and is especially suitable for the needs of domestic small and medium-sized enterprises, and has a good market prospect.

Description of drawings

Fig. 1 is a three-dimensional structural schematic diagram of a specific embodiment of a feed-type adjustable automatic polishing device of the present invention;

Fig. 2 is the front view of the embodiment shown in Fig. 1;

Figure 3 is a structural schematic diagram of the metal mesh belt.

The meanings of reference signs in the figure: 1. base, 2. guide rod, 3. guide rod support block, 4. spacer, 5. motor seat, 6. push plate, 7. lead screw, 8. lead screw nut, 9, lead screw nut seat, 10, lead screw seat, 11, first motor, 12, slide block, 13, second motor, 14, bearing support, 15, main shaft, 16, adjustment block, 17, inner groove through Hole, 18, adjusting screw, 19, angle grinder, 20, angle grinder frame, 21, polishing grinding head, 22, elastic metal mesh, 23, straight heart bone, 24, horseshoe-shaped chain piece, 25, soldering point.

detailed description

The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

Referring to Fig. 1 and Fig. 2, the feeding type eccentrically adjustable automatic polishing device of the present invention includes a supporting mechanism, a feeding mechanism and an eccentrically adjustable polishing mechanism arranged above the supporting mechanism.

Wherein, the support mechanism includes: a base 1, a guide rod support block 3 and a guide rod 2, the base 1 is rectangular but not limited to this shape, the guide rod support block 3 is installed on the base 1, and the guide rod 2 is connected to the guide rod support block between 3. As a specific structure, there are four guide rod support blocks 3, which are symmetrically arranged on the base 1, and are used for supporting and positioning two guide rods 2.

The feed mechanism is arranged above the support mechanism, and is used to drive the following eccentric adjustable polishing mechanism to reciprocate, specifically including: push plate 6, lead screw 7, lead screw nut 8, lead screw nut seat 9, lead screw seat 10 and The first motor 11 is provided with a slide block 12 below the push plate 6, and a sliding structure (such as a through hole) cooperating with the guide rod 2 is formed on the slide block 12, and the lead screw nut 8 is fixed on the lead screw nut seat 9 At the end of the push plate 6, the lead screw 7 is fixed on the lead screw seat 10 through a bearing and connected to the rotating shaft of the first motor 11 through a coupling, and the first motor 11 drives the lead screw nut 8 through the lead screw 7 to drive the push plate 6 Slide on guide rod 2. Further, as shown in FIG. 1 , a spacer 4 is provided on the base 1 to facilitate the installation of the motor base 5 and the screw base 10 , and the first motor 11 is installed on the motor base 5 .

The eccentric adjustable polishing mechanism is used to realize the polishing operation, including: the second motor 13, a pair of bearing supports 14, the main shaft 15, the adjustment block 16, the adjustment screw 18, the angle grinder 19 and the polishing grinding head 21, the second The motor 13 is fixed under the push plate 6 and moves with the push plate 6. The polishing grinding head 21 is connected with the angle grinder 19 and is driven by the angle grinder 19 to realize rotation. The angle grinder 19 is connected with the adjustment block through the angle grinder frame 20 16, the adjusting block 16 is connected with the main shaft 15 through the adjusting screw 18, the main shaft 15 is installed on the push plate 6 through a pair of bearing supports 14 and is driven by the second motor 13 to rotate, thereby driving the adjusting block 16 to rotate, so that The polishing grinding head 21 rotates eccentrically away from the axis of the main shaft 15 . As a kind of specific structure, the rotation of main shaft 15 is realized like this: the first belt pulley is installed on the main shaft 15 by flat key, and the second belt pulley is installed below push plate 6, and the rotating shaft of second belt pulley and second motor 13 connected, and the second pulley is connected with the first pulley through a synchronous belt, so that the second motor 13 can drive the main shaft 15 to rotate and drive the polishing grinding head 21 to rotate eccentrically.

Specifically, a pair of bearing supports 14 includes a first bearing support 14 close to the polishing grinding head 21 and a second bearing support 14 away from the polishing grinding head 21, and a feed screw 7 is formed on the second bearing support 14. through holes.

It should be noted that an inner groove through hole 17 is formed on the adjustment block 16, and by adjusting the installation position of the adjustment screw 18 in the inner groove through hole 17, the eccentricity of the adjustment block 16 rotating away from the axis of the main shaft 15 can be controlled. .

In order to better understand the present invention, below in conjunction with Fig. 1 to Fig. 3, the working process of the polishing device of the present invention is briefly described:

(1) Before starting the device, the position of the adjusting screw 18 in the through hole 17 of the inner groove of the adjusting block 16 can be changed according to the actual eccentricity requirements, and the eccentricity can be adjusted to realize that the polishing grinding head 21 can be relatively The main shaft 15 has the function of eccentric rotation.

(2) Start the polishing device, and the angle grinder 19 , the second motor 13 and the first motor 11 start to rotate simultaneously. The angle grinder 19 drives the polishing grinding head 21 to rotate, the second motor 13 drives the main shaft 15 to rotate through the second pulley, the timing belt, and the first pulley, and the main shaft 15 drives the angle grinder frame 20 and the angle grinder 19 to move. Eccentricity is achieved while rotating the buffing head 21 . At the same time, the first motor 11 rotates forward to drive the lead screw 7 to rotate forward, the lead screw nut 8 translates forward along the lead screw 7, the slider 12 also moves forward along the guide rod 2 driven by the lead screw nut 8, The polishing head 21 is forwarded to the metal surface to be polished. After the polishing grinding head 21 arrives at the polishing work position, the first motor 11 stops forward rotation, the polishing grinding head 21 stops moving forward, and the second motor 13 and the angle grinder 19 continue to rotate for polishing operation. After the polishing is completed, the first motor 11 reverses to drive the lead screw 7 to reverse, and drives the lead screw nut 8 to translate backwards. Driven by the lead screw nut 8, the slider 12 also moves backward along the guide rod 2 (i.e. Arrow direction shown in Figure 1), the device is reset to the initial state, waiting for the next polishing operation.

Of course, the polishing grinding head 21 can also be moved to the place to be polished by the first motor 11, and then the second motor 13 and the angle grinder 19 can be started to perform the polishing operation. The principle is the same as above, and the steps are briefly described as follows: the first motor 11 First rotate forward, drive the screw 7 to rotate forward, the screw nut 8 translates forward along the screw 7, at the same time the slider 12 also moves forward along the guide rod 2, and the polishing grinding head 21 is sent forward to the metal surface to be polished . Then, the first motor 11 stops working, the polishing grinding head 21 stops moving forward, and the second motor 13 and the angle grinder 19 start to rotate simultaneously again, and the second motor 13 is driven by the second pulley, the synchronous belt, and the first pulley The main shaft 15 rotates, and the main shaft 15 drives the angle grinder frame 20 and the angle grinder 19 to make the polishing grinding head 21 rotate eccentrically. When the polishing grinding head 21 rotates eccentrically, the angle grinder 19 drives the polishing grinding head 21 to realize autorotation, finally realizing the polishing of the metal surface. After the polishing is completed, the second motor 13 and the angle grinder 19 stop rotating, the polishing grinding head 21 stops eccentric rotation and autorotation, the first motor 11 starts to reverse, and the driving screw 7 reverses, and the screw nut 8 moves along the screw 7. Translate backwards, the slide 12 also moves backwards along the guide rod 2 under the driving of the lead screw nut 8, and the device resets to the initial state, waiting for the next polishing operation.

In conjunction with Fig. 3, the metal mesh belt is made up of elastic metal mesh 22, straight core 23 and horseshoe-shaped chain piece 24, and the process of polishing the welding head at the end of the straight core 23 in the metal mesh belt is as follows: according to the welding point 25 The size of the adjustment screw 18 is installed in the proper position in the through hole 17 of the inner groove of the adjustment block 16 to set the eccentricity of the eccentric rotation of the polishing grinding head 21. Then start the device, the angle grinder 19, the second motor 13 and the first motor 11 start to rotate simultaneously, the angle grinder 19 drives the polishing grinding head 21 to rotate, and the second motor 13 drives the main shaft 15 to rotate. The eccentricity is set, so the main shaft 15 drives the polishing grinding head 21 to rotate eccentrically. At the same time, the first motor 11 rotates forward to drive the lead screw 7 to rotate forward. Through the action of the feed mechanism, the polishing grinding head 21 is sent to the welding head to be polished. When the polishing grinding head 21 starts to polish the welding head , the first motor 11 stops forward rotation, and the polishing grinding head 21 stops moving. After the polishing of the welding head is completed, the first motor 11 is reversed, so that the polishing grinding head 21 leaves the welding head, resets to the initial state, and waits for polishing the next welding head.

In summary, the polishing device of the present invention is a feed-type eccentrically adjustable polishing device, which imitates the polishing action of a worker holding the angle grinder 19 to complete the automatic polishing operation of the metal surface. The first motor 11 drives the push plate 6 and the workpiece installed on the push plate 6 through the lead screw 7 to complete the feed motion; the second motor 13 drives the angle grinder 19 through the synchronous belt to complete the eccentric rotation; the eccentricity of the eccentric motion can be passed Adjust the mounting position of the adjusting block 16 on the main shaft 15 to adjust. The polishing process is free from manual intervention, ensuring stable polishing quality, and the surface polishing operations of different metals can be satisfied by replacing the polishing grinding head 21, which has good versatility.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the above-mentioned embodiments do not limit the present invention in any form, and all technical solutions obtained by means of equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims (7)

1. A feeding type eccentrically adjustable automatic polishing device, characterized in that it includes a support mechanism, a feed mechanism and an eccentrically adjustable polishing mechanism arranged above the support mechanism; Wherein, the support mechanism includes: a base, a guide rod support block and a guide rod, the guide rod support block is installed on the base, and the guide rod is connected between the guide rod support blocks; Described feed mechanism comprises: a push plate, leading screw, leading screw nut, leading screw nut seat, leading screw seat and the first motor, described leading screw nut is fixed on the push plate end by leading screw nut seat, described The lead screw is fixed on the lead screw seat through a bearing and connected with the rotating shaft of the first motor through a coupling. A slider for cooperating with the guide rod is provided under the push plate, and the first motor drives the lead screw through the lead screw. The nut drives the push plate to slide on the guide rod; The eccentric adjustable polishing mechanism includes: a second motor fixed below the push plate, a pair of bearing supports arranged above the push plate, a main shaft driven by the second motor, an adjustment block connected to the main shaft through an adjustment screw, An angle grinder and a polishing grinding head connected with the adjustment block, the adjustment block is formed with an inner groove through hole, and the eccentricity is adjusted by adjusting the installation position of the adjustment screw in the inner groove through hole. 2 . The feed-type eccentrically adjustable automatic polishing device according to claim 1 , wherein the supporting mechanism further comprises a motor base, and the first motor is mounted on the motor base. 3 . 3. A feed type eccentrically adjustable automatic polishing device according to claim 1, wherein the pair of bearing supports comprises a first bearing support close to the polishing grinding head and a second bearing away from the polishing grinding head. The second bearing support is formed with a through hole for the lead screw to pass through on the second bearing support. 4. A feed-type eccentrically adjustable automatic polishing device according to claim 2, characterized in that there are four guide rod support blocks, which are symmetrically arranged on the base for supporting and positioning two guide rods. pole. 5 . The feed-type eccentrically adjustable automatic polishing device according to claim 4 , wherein a spacer is provided on the base, and the motor seat and the lead screw seat are both installed on the spacer. 6 . 6. A feed-type eccentrically adjustable automatic polishing device according to any one of claims 1-5, characterized in that a first pulley is installed on the push plate, which is connected to the rotating shaft of the second motor The second pulley is connected to the first pulley through a timing belt, and the second motor drives the second pulley to drive the first pulley to drive the main shaft to rotate. 7. A feed-type eccentrically adjustable automatic polishing device according to claim 6, wherein the first pulley is mounted on the main shaft through a flat key.