Automatic bonding device for thinning grinding wheel

Abstract

The invention provides an automatic bonding device for a thinned grinding wheel, and relates to the field of thinned grinding wheels, the automatic bonding device comprises a workbench, a rotating table is rotatably arranged in the center of the top of the workbench, the top of the rotating table is used for loading a grinding wheel base body, and three lateral supports are arranged on the outer end face of the rotating table; the lateral supports on the three sides are arranged in an annular array with the rotary table as the center. According to the device, manual intervention is not needed, operators are thoroughly liberated from heavy and repeated fine labor, the production efficiency is greatly improved, the labor cost is reduced, and more importantly, through the three core technologies of quantitative dispensing, precise feeding of the mechanical arm and numerical control indexing, the production efficiency is greatly improved. A series of quality defects such as non-uniform glue amount, unstable bonding strength, poor tooth sheet spacing consistency, poor product dynamic balance performance and the like in the background technology are fundamentally solved, and finally each produced thinned grinding wheel is ensured to have excellent and consistent high quality.

Description

Technical Field

[0001] This invention relates to the field of thinning grinding wheel technology, specifically to an automatic bonding device for thinning grinding wheels. Background Technology

[0002] Thinning grinding wheels typically consist of a metal substrate and multiple toothed discs fixed to the working surface of the substrate by an adhesive. These toothed discs are usually made of superhard abrasives such as diamond or cubic boron nitride, and the uniformity, firmness, and positional accuracy of their bonding directly determine the dynamic balance performance, service life, and surface quality of the workpiece being processed.

[0003] In existing production processes, the bonding of toothed plates mainly relies on manual labor. The specific operation process is as follows: the operator holds a single toothed plate, dips its bottom in adhesive, and then adheres it to a pre-set track on the substrate. In order to control the distribution spacing of the toothed plates in the circumferential direction of the substrate, it is usually necessary to manually position them with the help of a fixed ruler or a special spacing fixture. However, this bonding method dominated by manual labor has many inherent defects, which seriously restrict the improvement of production efficiency and product quality. It leads to problems such as difficulty in controlling the amount of adhesive, poor quality stability, insufficient positioning accuracy and consistency, low production efficiency, and high labor costs. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an automatic bonding device for thinning grinding wheels, thereby solving the technical problems of uneven adhesive bonding, poor positioning accuracy, low production efficiency, and excessive reliance on manual labor in the aforementioned existing technologies.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic bonding device for thinning grinding wheels, comprising a worktable, a rotating platform rotatably mounted at the top center of the worktable, the top of the rotating platform for loading the grinding wheel substrate, three lateral supports on the outer end face of the rotating platform, the three lateral supports arranged in a circular array around the rotating platform, a plurality of telescopic push rods on the side of the lateral supports near the grinding wheel substrate, the top of the push rods being fixedly connected to an arc-shaped clamping block, the arc-shaped clamping blocks on each side clamping the grinding wheel substrate by telescopic movement, three linear module shells fixedly mounted on the top of the worktable, the three linear module shells located on the three sides of the rotating platform, the linear module shells having an upward-opening guide groove, the guide groove having a movable drive slider, the top of the drive slider being fixedly mounted with an arc-shaped support arm bent to a certain degree of curvature.

[0006] Preferably, a clamping driver is installed at one end of each side of the lateral support, and the clamping driver is poweredly connected to the push rod at the corresponding position. Preferably, the top of the arc-shaped support arm is equipped with a rotatable mounting base, and the mounting base and the arc-shaped support arm are connected by a hinge shaft.

[0007] Preferably, an automatic feeder is installed on the mounting base located on both sides of the rotary table near the grinding wheel base, and a dotting head is installed on the mounting base located on a single side of the rotary table near the grinding wheel base.

[0008] Preferably, the dispensing head has a dispensing port at the bottom, which is located above the grinding wheel base, and a dispensing unit at the top of the dispensing head to add adhesive.

[0009] Preferably, a ball screw is rotatably provided between the two walls of the guide groove on each side, the ball screw is threadedly connected to the drive slider, and a lifting driver is provided inside the linear module housing, the ball screw being poweredly connected to the lifting driver.

[0010] Preferably, a rotary driver is fixedly installed at the lower end of the worktable, and a drive shaft is poweredly connected to the top of the rotary driver. The top end of the drive shaft passes through the worktable and is fixedly connected to the rotary table. A slewing support bearing is installed at the connection position between the rotary table and the drive shaft, and the slewing support bearing provides a stabilizing effect.

[0011] Preferably, the automatic feeder has a downward-opening feeding channel, and two elastic limiting plates are fixed on both sides of the bottom of the automatic feeder. The elastic limiting plates are made of elastic material.

[0012] Preferably, the automatic feeder has an inclined feeder body installed on top, and the feeder body has an upward-opening storage trough inside. The storage trough is connected to the feeding channel, and a guide block is installed at the connection position between the storage trough and the feeding channel to guide and straighten the feeder.

[0013] Preferably, the automatic feeder has feeding driver bases fixedly installed on both ends, and the feeding driver bases on both sides are misaligned with the installation position of the elastic limiting piece, and feeding mechanical fingers are rotatably mounted on the lower ends of the feeding driver bases on both sides.

[0014] Preferably, the workbench is fixed with four supporting feet at the four corners of its bottom, and the four supporting feet are symmetrically positioned to provide stable support.

[0015] This invention provides an automatic bonding device for thinning grinding wheels. It has the following beneficial effects: 1. This invention utilizes a three-sided annular array of arc-shaped clamping blocks in conjunction with push rods to achieve uniform and reliable clamping of the grinding wheel substrate, providing a stable foundation for subsequent operations. Simultaneously, its automatic dispensing system employs precise air pressure control to quantitatively dispense adhesive, avoiding uneven adhesive distribution or overflow and ensuring consistent bonding strength. The automatic feeder, through a storage trough, guide blocks, and elastic limit plates, ensures the orderly transport of the toothed plates, while the feeding mechanism precisely dispenses the material, guaranteeing accurate adhesion between the toothed plates and the substrate. Subsequently, the linear module and lifting driver allow for flexible adjustment of the dispensing head and feeder height. The hinge shaft supports fine-tuning of the angle to adapt to different grinding wheel specifications. The rotary driver drives the rotary table to rotate in increments, and the slewing support bearing ensures smooth rotation, achieving fully automatic continuous bonding operations. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the external structure of the present invention; Figure 2 This is a front view of the external structure of the present invention; Figure 3 This is a bottom view of the external structure of the present invention; Figure 4 This is a front view of the external structure of the present invention; Figure 5 For the present invention Figure 4 A cross-sectional view along the AA direction; Figure 6 For the present invention Figure 2 Enlarged structural diagram of the middle lateral support component; Figure 7 For the present invention Figure 2 An enlarged structural diagram of the automatic feeder component.

[0017] In the diagram: 101. Workbench; 102. Arc-shaped support arm; 103. Drive slider; 104. Linear module housing; 105. Side bracket; 106. Rotary driver; 107. Support foot; 108. Rotary table; 109. Arc-shaped clamping block; 110. Glue supply unit; 111. Dispensing head; 112. Glue outlet; 113. Storage tank; 114. Feeder body; 115. Mounting base; 116. Hinge shaft; 117. Clamping driver; 119. Guide groove; 120. Automatic feeder; 121. Grinding wheel base; 123. Drive shaft; 124. Ball screw; 125. Feeding mechanical finger; 127. Elastic limit plate; 128. Push rod; 129. Feeding driver base; 130. Lifting driver; 131. Rotary support bearing; 132. Feeding channel; 133. Guide block. Detailed Implementation

[0018] This invention provides an automatic bonding device for thinning grinding wheels, such as... Figure 1-7As shown, the system includes a worktable 101, with a rotating platform 108 rotatably mounted at the top center of the worktable 101. The top of the rotating platform 108 is used to load a grinding wheel substrate 121. Three lateral supports 105 are provided on the outer end face of the rotating platform 108. The three lateral supports 105 are arranged in a circular array around the rotating platform 108. Several telescopic push rods 128 are provided on the side of the lateral supports 105 near the grinding wheel substrate 121. An arc-shaped clamping block 1 is fixedly connected to the top of the push rod 128. 09. The arc-shaped clamping blocks 109 on each side clamp the grinding wheel base 121 by telescopic movement. Three linear module shells 104 are fixedly installed on the top of the worktable 101. The three linear module shells 104 are located on the three sides of the rotary table 108. The linear module shells 104 are provided with guide grooves 119 with upward openings. The guide grooves 119 are provided with movable drive sliders 103. The top of the drive sliders 103 is fixedly provided with arc-shaped support arms 102 that are bent to a certain degree.

[0019] Furthermore, a clamping driver 117 is installed at one end of each lateral support 105, and the clamping driver 117 is poweredly connected to the push rod 128 at the corresponding position. It should be further explained that when the clamping driver 117 is started, it can drive the push rod 128 to move telescopically, thereby driving the grinding wheel base 121 to achieve the clamping effect of telescopic movement.

[0020] Furthermore, a rotatable mounting base 115 is installed and connected to the top of the arc-shaped support arm 102, and the mounting base 115 and the arc-shaped support arm 102 are connected by a hinge shaft 116.

[0021] Furthermore, an automatic feeder 120 is installed on the mounting base 115 on both sides of the rotary table 108 near the grinding wheel base 121, and a dotting head 111 is installed on the mounting base 115 on a single side of the rotary table 108 near the grinding wheel base 121.

[0022] Furthermore, the dispensing head 111 has a dispensing port 112 at the bottom, which is located above the grinding wheel base 121, and the dispensing head 111 has a glue supply unit 110 at the top to add adhesive.

[0023] It should be further explained that when the dispensing head 111 is activated, it can push the adhesive downward through the internal air pressure and dispense a fixed amount of adhesive onto the bonding surface of the grinding wheel substrate 121.

[0024] Furthermore, a ball screw 124 is rotatably provided between the two walls of the guide groove 119 on each side. The ball screw 124 is threadedly connected to the drive slider 103. A lifting driver 130 is provided inside the linear module housing 104. The ball screw 124 is poweredly connected to the lifting driver 130.

[0025] It should be further explained that when the lifting driver 130 is started, it can drive the ball screw 124 to rotate through the power connection, and the ball screw 124 is threadedly connected to the drive slider 103, thereby driving the drive slider 103 to move in the guide groove 119, thereby driving the arc support arm 102 to move and adjust its position, thereby achieving the effect of driving the automatic feeder 120 and the dispensing head 111 to adjust their positions, and achieving the effect of adapting to different specifications of grinding wheel bases 121.

[0026] Furthermore, a rotary driver 106 is fixedly installed at the lower end of the worktable 101, and a drive shaft 123 is poweredly connected to the top of the rotary driver 106. The top end of the drive shaft 123 passes through the worktable 101 and is fixedly connected to the rotary table 108. A rotary support bearing 131 is installed at the connection position between the rotary table 108 and the drive shaft 123, and the rotary support bearing 131 plays a stabilizing role.

[0027] It should be further explained that the rotary driver 106 rotates at a fixed angle according to the setting, thereby achieving the effect of lifting and driving the grinding wheel base 121 to rotate and move at a fixed angle. At the same time, the rotational stability is maintained by the rotary support bearing 131 during the rotation.

[0028] Furthermore, the automatic feeder 120 is provided with a downward-opening feeding channel 132, and two elastic limiting plates 127 are fixed on both sides of the bottom of the automatic feeder 120. The elastic limiting plates 127 are made of elastic material.

[0029] Furthermore, the automatic feeder 120 is equipped with an inclined feeder body 114 on its top. The feeder body 114 has an upward-opening storage trough 113 inside. The storage trough 113 is connected to the feeding channel 132. A guide block 133 is installed at the connection position between the storage trough 113 and the feeding channel 132 to guide and straighten the feeder.

[0030] It should be further explained that the storage tank 113 is used to place the toothed pieces for bonding. After the toothed pieces are arranged and placed into the storage tank 113, they fall along the inclined guide and are straightened by the storage tank 113 before falling into the feeding channel 132. At this time, the bottom toothed piece is limited by the elastic limiting pieces 127 that retract inward on both sides.

[0031] Furthermore, feeding driver bases 129 are fixedly installed on both ends of the automatic feeder 120. The installation positions of the feeding driver bases 129 on both sides are misaligned with those of the elastic limit plates 127. Feeding mechanical fingers 125 rotate at the lower ends of the feeding driver bases 129 on both sides.

[0032] It should be further explained that a small motor is installed in the feed driver base 129 to drive the feed mechanical finger 125 to rotate. When the feed mechanical finger 125 rotates, the feed mechanical fingers 125 on both sides are misaligned with the elastic limiting plate 127. With the feed mechanical fingers 125 on both sides, the two ends of the lowest toothed piece are clamped. With the cooperation of the feed mechanical fingers 125 on both sides, the lowest toothed piece is moved down to above the grinding wheel base 121. Then, the elastic limiting plate 127 contracts after deformation, continuing to limit the falling toothed piece. The toothed piece falling down to above the grinding wheel base 121 can be accurately placed in the installation position through precise control of the distance.

[0033] Furthermore, four support feet 107 are fixed at the four corners of the bottom of the workbench 101. The four support feet 107 are symmetrically positioned to provide stable support.

[0034] When working, the grinding wheel base 121 is first clamped on the rotary table 108, and the clamping drivers 117 on each side are activated to push the push rod 128 and the arc-shaped clamping block 109 to retract inward, clamping the grinding wheel base 121 evenly and reliably from three directions, providing a stable foundation for its subsequent precise indexing rotation.

[0035] Before the bonding process begins, the ball screw 124 can be rotated by the lifting driver 130 according to the specifications of the currently produced grinding wheel substrate 121. This will drive the drive slider 103 and the arc-shaped support arm 102 above it to rise and fall as a whole, thereby adjusting the relative height between the glue outlet 112 of the dispensing head 111 and the lower end of the feeding channel 132 of the automatic feeder 120 and the bonding surface of the grinding wheel substrate 121. At the same time, the angle of the mounting base 115 can be finely adjusted by the hinge shaft 116 to ensure that the dispensing and feeding path is optimally matched with the normal direction of the bonding trajectory of the substrate. This allows the device to quickly adapt to grinding wheel substrates of different diameters and thicknesses, making it highly versatile.

[0036] The bonding process is automatically repeated in a loop according to the following steps: S1. When performing precise quantitative dispensing, the dispensing head 111 located on one side receives a signal, and its internal precision air pressure system is activated. The adhesive supplied by the adhesive supply unit 110 is quantitatively and evenly extruded from the dispensing port 112 and precisely coated on the predetermined position of the toothed piece to be bonded on the grinding wheel substrate 121. This process completely eliminates the problem of too much or too little adhesive caused by manually estimating the amount of adhesive, ensuring the uniformity of the bonding strength of each toothed piece and effectively avoiding adhesive overflow pollution.

[0037] S2. During the automatic feeding and precise positioning of the toothed pieces, the automatic feeder 120 on the opposite side starts working. The toothed pieces stacked in the storage tank 113 slide down the inclined groove under the action of gravity. After being corrected by the guide block 133, it is ensured that each piece enters the feeding channel 132 in a uniform and correct posture. The elastic limiting piece 127 at the bottom of the channel initially limits the bottom toothed piece. Then, the small motor in the feeding driver base 129 starts, driving the feeding mechanical fingers 125 on both sides to rotate in opposite directions, clamping the two ends of the toothed piece and overcoming the resistance of the elastic limiting piece 127 to smoothly feed it downward.

[0038] S3. The toothed plate fed by the feeding mechanical finger 125 is placed directly into the predetermined position that has just been coated with adhesive under precise control. Since the distance between the lower end of the feeding channel 132 and the surface of the grinding wheel base 121 is precisely set, and the feeding process is stable and controlled, it is ensured that there is no bouncing or deviation when the toothed plate falls, thus achieving fast and precise bonding between the toothed plate and the base.

[0039] S4. After one toothed piece is bonded, the rotary driver 106 drives the drive shaft 123 to precisely rotate the rotary table 108 and the grinding wheel base 121 held on it by a fixed angle according to a preset program. For example, if the grinding wheel needs to bond 36 toothed pieces, it rotates 10° each time. The rotary support bearing 131 ensures the smoothness and high precision of the rotation during this process. After rotating to the correct position, the device repeats steps 1 to 3 above to perform the dispensing, feeding, and bonding of the next toothed piece.

[0040] Then, by repeating steps S1-S4, the bonding of all the teeth on the entire circumference of the grinding wheel base can be completed automatically and continuously.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic bonding device for thinning grinding wheels, comprising a worktable (101), characterized in that: A rotating platform (108) is rotatably mounted at the top center of the workbench (101). The top of the rotating platform (108) is used to load the grinding wheel base (121). Three lateral supports (105) are provided on the outer end face of the rotating platform (108). The three lateral supports (105) are arranged in a circular array around the rotating platform (108). Several telescopic push rods (128) are provided on the side of the lateral support (105) near the grinding wheel base (121). An arc-shaped clamping block (109) is fixedly connected to the top of each push rod (128). The arc-shaped clamping block (109) on the side achieves clamping work on the grinding wheel base (121) by telescopic movement. Three linear module shells (104) are fixedly provided on the top of the worktable (101). The three linear module shells (104) are located on the three sides of the rotary table (108). The linear module shells (104) are provided with an upward-opening guide groove (119). The guide groove (119) is provided with a movable drive slider (103). The top of the drive slider (103) is fixedly provided with an arc-shaped support arm (102) that is bent into a certain arc.

2. The automatic bonding device for thinning grinding wheels according to claim 1, characterized in that: Each side of the lateral support (105) is equipped with a clamping driver (117) at one end, and the clamping driver (117) is poweredly connected to the push rod (128) at the corresponding position.

3. The automatic bonding device for thinning grinding wheels according to claim 1, characterized in that: The top of the arc-shaped support arm (102) is fitted with a rotatable mounting base (115), and the mounting base (115) and the arc-shaped support arm (102) are connected by a hinge shaft (116).

4. The automatic bonding device for thinning grinding wheels according to claim 3, characterized in that: An automatic feeder (120) is installed on the side of the mounting base (115) located on both sides of the rotary table (108) near the grinding wheel base (121), and a dotting head (111) is installed on the side of the mounting base (115) located on a single side of the rotary table (108) near the grinding wheel base (121).

5. The automatic bonding device for thinning grinding wheels according to claim 4, characterized in that: The dispensing head (111) has a glue outlet (112) at the bottom, which is located above the grinding wheel base (121). The dispensing head (111) has a glue supply unit (110) at the top to add adhesive.

6. The automatic bonding device for thinning grinding wheels according to claim 1, characterized in that: A ball screw (124) is rotatably provided between the two walls of the guide groove (119) on each side. The ball screw (124) is threadedly connected to the drive slider (103). A lifting driver (130) is provided inside the linear module housing (104). The ball screw (124) is poweredly connected to the lifting driver (130).

7. The automatic bonding device for thinning grinding wheels according to claim 1, characterized in that: A rotary driver (106) is fixedly installed at the lower end of the worktable (101). A drive shaft (123) is poweredly connected to the top of the rotary driver (106). The top end of the drive shaft (123) passes through the worktable (101) and is fixedly connected to the rotary table (108). A slewing support bearing (131) is installed at the connection position between the rotary table (108) and the drive shaft (123). The slewing support bearing (131) provides a stabilizing effect.

8. The automatic bonding device for thinning grinding wheels according to claim 4, characterized in that: The automatic feeder (120) has a downward-opening feeding channel (132). Two elastic limiting plates (127) are fixed on both sides of the bottom of the automatic feeder (120). The elastic limiting plates (127) are made of elastic material. The top of the automatic feeder (120) is equipped with an inclined feeder body (114). The feeder body (114) has an upward-opening storage trough (113). The storage trough (113) is connected to the feeding channel (132). A guide block (133) is installed at the connection position between the storage trough (113) and the feeding channel (132) to guide and straighten.

9. The automatic bonding device for thinning grinding wheels according to claim 8, characterized in that: The automatic feeder (120) has feeding driver bases (129) fixedly installed on both sides of the end face. The feeding driver bases (129) on both sides are misaligned with the installation position of the elastic limiting piece (127). The feeding mechanical fingers (125) rotate at the lower end of the feeding driver bases (129) on both sides.

10. The automatic bonding device for thinning grinding wheels according to claim 1, characterized in that: The workbench (101) is fixed with four support feet (107) at the four corners of its bottom. The four support feet (107) are symmetrically positioned to provide stable support.

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