Lower millstone mechanism capable of rapidly switching double working conditions

Abstract

The utility model discloses a lower millstone mechanism capable of rapidly switching double working conditions, which relates to the technical field of polishing processing and comprises a case, a lower millstone is rotatably arranged at the top of the case, and a rotating shaft extending into the case is fixedly arranged at the axis position of the bottom of the lower millstone. The first driving part and the second driving part are arranged on the case, the first driving part is in transmission connection with the rotating shaft, and the second driving part is in clutch type transmission connection with the rotating shaft. According to the utility model, through the arrangement of two working conditions, the corresponding working condition can be selected according to the corresponding working procedure in the polishing operation process, and compared with the single use working condition of the lower millstone in the prior art, the two working conditions can be switched for use, so that the production efficiency can be improved, and the production cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of polishing processing, in particular to a lower grinding disc mechanism with dual working conditions and fast switching. Background Art

[0002] The polishing head in the prior art polishing machine has the functions of lifting and rotating, and a jig plate is fixedly installed on the bottom of the polishing head. A plurality of vacuum suction holes are opened at the bottom of the jig plate. An air pipe is arranged on the polishing head, and the air pipe is connected with the plurality of vacuum suction holes. When the air pipe generates negative pressure, the plurality of vacuum suction holes can adsorb the product to be polished, and then the polishing head is driven to perform a lifting action, driving the product to rise or descend to the lower grinding disc until the part to be polished of the product contacts the rotating lower grinding disc, and then the polishing head is driven to drive the product to rotate, so as to realize the polishing process.

[0003] Specifically, the lower grinding disc is generally rotatably arranged on the machine tool. The lower grinding disc is driven to rotate by a driving source, and a high-speed rotating grinding surface is formed on its top. Then the polishing head drives the product from top to bottom to approach the grinding surface to achieve the grinding process. Subsequently, the polishing head is used to drive the product to rotate, and the position of the product can be adjusted to achieve uniform grinding of the product.

[0004] After searching, the patent document with authorization announcement number CN221270782U discloses a lower grinding disc mechanism of a grinder, which includes an X-axis drive device, a mounting frame, a counterweight device, a Z-axis drive device, a mounting plate, a rotation drive device and a lower grinding disc assembly; the power output end of the X-axis drive device is connected to the mounting frame for driving the mounting frame to move left and right; the Z-axis drive device is installed on the right side of the mounting frame and the power output end is connected to the mounting plate for controlling the up and down movement of the mounting plate; the counterweight device includes a cylinder and a connecting frame; the cylinder is installed in the mounting frame and the power output end is connected to the mounting plate through the connecting frame; the lower grinding disc assembly includes a lower grinding disc mounting seat installed on the mounting plate and a lower grinding disc rotatably connected above the lower grinding disc mounting seat; the rotation drive device is installed on the mounting plate and is located below the lower grinding disc assembly; the power output end of the rotation drive device is connected to the lower grinding disc through a coupling.

[0005] When the above mechanism is in use, the X-axis drive device controls the lower grinding disc assembly to move back and forth left and right, so that all positions of the lower grinding disc can be used for workpiece grinding, so that the grinding surface of the lower grinding disc is consumed more evenly and wear is reduced. The Z-axis drive device controls the lifting of the lower grinding disc assembly to compensate for its wear, so that the workpiece grinding meets the requirements.

[0006] In summary, based on the conventional design of the lower grinding disc in the prior art and the patent literature records about the lower grinding disc in the prior art, it can be known that the lower grinding disc only has the function of high-speed rotation to form a grinding surface on its top and longitudinal movement to compensate for the loss of its grinding surface during use. It should be noted that since the lower grinding disc needs to be used with a matching polishing head, and the bottom of the polishing head needs to be installed with a fixture disc for adsorbing the product, the fixture disc has the characteristics of large size and heavy weight. It is generally pushed to the bottom of the polishing head by a forklift or a mechanical arm for installation. During its installation, the horizontal position of the fixture disc needs to be repeatedly adjusted until the horizontal position of the fixture disc is adjusted to the installation range at the bottom of the polishing head. The adjustment process is relatively complicated and cumbersome. Generally, the assembly process of the lower grinding disc and the fixture disc and the grinding process of the fixture disc adsorbing the product and approaching the lower grinding disc are carried out independently and separately, and the two do not interfere with each other. However, the independent work of the two will not only increase production time and reduce production efficiency, but also increase production costs, which is not in line with the company's concept of energy saving and efficiency improvement.

[0007] To this end, we propose a lower grinding disc mechanism with dual working conditions and rapid switching to solve the above problems. Utility Model Content

[0008] The purpose of the utility model is to solve the problems in the prior art and to propose a lower grinding disc mechanism with dual working conditions and rapid switching. The lower grinding disc has two optional working conditions, and the two working conditions can be switched according to actual needs. Compared with the single use condition of the lower grinding disc in the prior art, the switching use of the two working conditions of the utility model can not only improve production efficiency, but also reduce production costs.

[0009] In order to solve the above problems, the utility model provides the following technical solutions:

[0010] A dual-mode rapid-switching lower grinding disc mechanism comprises a chassis, a lower grinding disc is rotatably arranged on the top of the chassis, and a rotating shaft extending into the interior of the chassis is fixedly arranged at the bottom axial position of the lower grinding disc, and also comprises a first driving member and a second driving member arranged on the chassis, the first driving member is transmission-connected to the rotating shaft, the second driving member is clutch-connected to the rotating shaft, and when the second driving member is in an engaged state with the rotating shaft, the second driving member can drive the rotating shaft and the lower grinding disc to rotate at a corresponding angle, so as to drive the fixture disc on the lower grinding disc to follow the corresponding angle; when the second driving member is in a separated state with the rotating shaft, the first driving member can drive the rotating shaft and the lower grinding disc to rotate continuously, so that a rotating grinding surface is formed on the top of the lower grinding disc.

[0011] As a further solution of the utility model: a first reducer connected to the rotating shaft is arranged inside the chassis; at the input shaft of the first reducer, a first power input point and a second power input point are arranged axially from the inside to the outside, the first power input point is used to form a transmission match with the first driving member, and the second power input point is used to form a transmission match with the second driving member, and a clutch transmission connection is formed between the two power input points.

[0012] As a further solution of the utility model: the second driving member includes a second motor and a second reducer fixedly arranged inside the chassis, the second motor and the second reducer are transmission connected, and the transmission shaft of the second reducer is engaged or disengaged with the second power input point through a clutch.

[0013] As a further solution of the utility model: the first driving member is a first motor fixedly arranged inside the chassis, and a belt drive is formed between the first motor and the first power input point.

[0014] As a further solution of the utility model: a plurality of groups of positioning holes arranged in a circumferential array are provided on the top of the lower grinding disc, and the positioning holes are used to locate the position of the fixture disc on the lower grinding disc.

[0015] As a further solution of the utility model: a chamber is opened inside the lower grinding disc, the rotating shaft is hollow and has partitions inside, so that the inside of the rotating shaft is divided into a liquid inlet channel and a liquid outlet channel, and the liquid inlet channel and the liquid outlet channel are both connected to the chamber.

[0016] As a further solution of the utility model: it also includes a return piece, which includes an induction switch and a controller arranged inside the chassis, and an induction sheet for use with the induction switch is arranged on the outside of the rotating shaft, the induction switch and the second motor are electrically connected to the controller, and the second motor is controlled by the controller, with the position of the rotating shaft when the induction sheet is located on the working path of the induction switch as the origin reference, and the second motor can drive the rotating shaft to rotate a corresponding angle based on the origin reference.

[0017] As a further solution of the utility model: a bracket is arranged inside the chassis, and the induction switch is detachably mounted on the bracket.

[0018] As a further solution of the utility model: the controller is a single chip microcomputer or a PLC.

[0019] As a further solution of the present invention: the second motor is a stepper motor or a servo motor.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] 1. By connecting the first driving member to the rotating shaft transmission and the second driving member to the rotating shaft clutch transmission, the rotating shaft can have two working conditions. The first working condition of the rotating shaft can drive the fixture disk on the lower grinding disc to follow the corresponding angle, so that the fixture disk can be driven to the position directly below the polishing head, which is convenient for the rapid assembly of the polishing head and the fixture disk; the second working condition of the rotating shaft can drive the lower grinding disc to rotate, so that a rotating grinding surface is formed on the top of the lower grinding disc to polish and grind the product adsorbed on the bottom of the fixture disk; the utility model has two working conditions, and during the grinding operation, the corresponding working condition can be selected according to the corresponding process. Compared with the single use working condition of the lower grinding disc in the prior art, the switching use of the two working conditions of the utility model can not only improve the production efficiency, but also reduce the production cost.

[0022] 2. Through the setting of the positioning holes, in the process of placing multiple sets of fixture discs on the lower grinding disc, the multiple sets of fixture discs can be accurately positioned and placed respectively by relying on the multiple sets of positioning holes, and the subsequent rotation of the lower grinding disc can accurately drive the fixture discs to move accordingly.

[0023] 3. Through the setting of the return member, since the first reducer and the second reducer are engaged or separated by the clutch, and then when the first reducer and the second reducer are engaged again after being separated, the engagement point position of the first reducer and the second reducer may change. Under the action of the return member, the origin position of the rotating shaft can be accurately located, and the subsequent rotating shaft can be rotated at a corresponding angle based on the origin position, that is, the fixture disk can be accurately rotated to the assembly position directly below the corresponding polishing head. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The utility model is further described below in conjunction with the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the overall structure of the utility model Figure 1 ;

[0026] Figure 2 It is a front view structural schematic diagram of the utility model;

[0027] Figure 3 This is a schematic diagram of the overall structure of the first driving member and the second driving member in the utility model. Figure 1 ;

[0028] Figure 4 This is a schematic diagram of the overall structure of the first driving member and the second driving member in the utility model. Figure 2 ;

[0029] Figure 5 yes Figure 1 In the state, the overall structural diagram of the jig plate is placed on the lower grinding plate;

[0030] Figure 6 This is a schematic diagram of the overall structure of the utility model Figure 2 ;

[0031] Figure 7 yes Figure 6 Schematic diagram of the enlarged structure at point A in the middle.

[0032] In the figure: 1. chassis; 2. lower grinding disc; 3. rotating shaft; 4. first reducer; 5. second motor; 6. second reducer; 7. clutch; 8. first motor; 9. induction switch; 10. induction sheet; a. fixture plate. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] like Figure 1-Figure 7 As shown, a dual-working-mode fast-switching lower grinding disc mechanism comprises a chassis 1 and a first driving member and a second driving member arranged on the chassis 1. A lower grinding disc 2 is rotatably arranged on the top of the chassis 1, and a rotating shaft 3 extending into the interior of the chassis 1 is fixedly arranged at the bottom axial position of the lower grinding disc 2, the first driving member is connected to the rotating shaft 3 by transmission, and the second driving member is connected to the rotating shaft 3 by clutch transmission.

[0035] On the basis of setting the above-mentioned clutch transmission connection, when the second driving member is in the engaged state with the rotating shaft 3, the second driving member can drive the rotating shaft 3 and the lower grinding disc 2 to rotate at a corresponding angle, so as to drive the fixture disc a on the lower grinding disc 2 to follow the corresponding angle, so that the fixture disc a can be driven to the bottom of the polishing head, and then the polishing head is driven to move downward until its bottom is adapted to connect with the fixture disc a. This is the first working condition of the lower grinding disc 2, and this state can be controlled by Figure 5To represent, this figure only shows the situation of setting a set of jig discs a. In actual use, the corresponding number of jig discs a can be set according to the number of polishing heads. When the second driving member is in a separated state from the rotating shaft 3, the first driving member can drive the rotating shaft 3 and the lower grinding disc 2 to rotate continuously, so that the top of the lower grinding disc 2 forms a rotating grinding surface, and the jig disc a at the bottom of the subsequent polishing head can drive the adsorbed product to the corresponding position of the rotating grinding surface for polishing and grinding. This is the second working condition of the lower grinding disc 2; the utility model can interact the assembly process of the jig disc a and the polishing head and the polishing process of the product through the setting of the lower grinding disc mechanism, so that the two are no longer independent, and the two processes can be quickly switched to use according to actual needs, which is convenient to use.

[0036] like Figure 5 As shown, in the first working condition, if multiple sets of jig disks a are set, in order to allow the multiple sets of jig disks a to be accurately placed on the lower grinding disk 2, multiple sets of positioning holes arranged in a circumferential array can be set on the top of the lower grinding disk 2, and the positioning holes are used to locate the position of the jig disk a on the lower grinding disk 2.

[0037] Furthermore, in order to enable the rotating shaft 3 to obtain a larger torque force to drive the lower grinding disc 2 and the fixture disc a to rotate, a first reducer 4 connected to the rotating shaft 3 can be arranged inside the chassis 1, and at the input shaft of the first reducer 4, a first power input point and a second power input point are arranged axially from the inside to the outside in sequence, the first power input point is used to form a transmission match with the first driving member, and the second power input point is used to form a transmission match with the second driving member, and a clutch transmission connection is formed between the two power input points.

[0038] The first driving member and the second driving member mentioned above may be respectively configured as follows:

[0039] 1) If Figure 1-Figure 3 As shown, the first driving member is a first motor 8 fixedly arranged inside the chassis 1, and a belt transmission is formed between the first motor 8 and the first power input point, that is, the first motor 8 is connected to the first reducer 4 in a transmission manner. In the second working condition, the rotation of the output shaft of the first motor 8 can drive the rotating shaft 3 and the lower grinding disc 2 to rotate through the first reducer 4, and the rotation of the lower grinding disc 2 will form a rotating grinding surface;

[0040] 2) If Figure 3-Figure 4As shown, the second driving member includes a second motor 5 and a second reducer 6 fixedly arranged inside the chassis 1. The second motor 5 is transmission-connected to the second reducer 6, and the transmission shaft of the second reducer 6 is engaged or disengaged with the second power input point through a clutch 7. Under the first working condition, the rotation of the output shaft of the second motor 5 can drive the rotating shaft 3 and the lower grinding disc 2 to rotate through the second reducer 6 and the first reducer 4 in turn. The lower grinding disc 2 can rotate at any angle, that is, it can drive the fixture disc a thereon to follow and move to the bottom of the polishing head. The subsequent lowering action of the polishing head can realize the assembly connection with the fixture disc a.

[0041] As for the setting of the clutch 7 in the present invention, the clutch 7 can be set to any suitable model in the prior art, as long as the clutch 7 can realize the engagement or separation function between the transmission shaft of the second reducer 6 and the transmission shaft of the first reducer 4. Preferably, the clutch 7 is set to a tooth clutch, which is mainly composed of an active engagement member and a driven engagement member; taking the tooth clutch as an example, when installing, the active engagement member on the tooth clutch is set on the transmission shaft of the second reducer 6, and the driven engagement member on the tooth clutch is set on the transmission shaft of the first reducer 4; when in use, if the teeth on the active engagement member and the driven engagement member are engaged or disengaged with each other, the active engagement member and the driven engagement member can be engaged or separated, that is, the engagement or separation of the transmission shaft of the second reducer 6 and the transmission shaft of the first reducer 4 is realized.

[0042] like Figure 5-Figure 7 As shown, when there are multiple groups of polishing heads at work and it is necessary to rely on this lower grinding disc mechanism to assemble and connect multiple groups of fixture discs a, since the first reducer 4 and the second reducer 6 are engaged or separated through the clutch 7, and then when the first reducer 4 and the second reducer 6 are engaged and used again after being separated, the position of the engagement point between the first reducer 4 and the second reducer 6 may change, and thus the position of the lower grinding disc 2 cannot be known, that is, the operation of the second motor 5 can only ensure that the rotating shaft 3 and the lower grinding disc 2 are followed accordingly, and the accurate rotation angle of the lower grinding disc 2 cannot be controlled, and thus the multiple groups of fixture discs a cannot be assembled and connected with the multiple groups of polishing heads in sequence. Based on this, the utility model also includes a return member, which includes an induction switch 9 and a controller arranged inside the chassis 1, and an induction sheet 10 for use with the induction switch 9 is arranged on the outside of the rotating shaft 3. The induction switch 9 and the second motor 5 are both electrically connected to the controller, and the second motor 5 is controlled by the controller. The position of the rotating shaft 3 when the induction sheet 10 is located on the working path of the induction switch 9 is used as the origin reference. The second motor 5 can drive the rotating shaft 3 to rotate a corresponding angle based on the origin reference.

[0043] This article takes the polishing head being set to four groups as an example for explanation. Correspondingly, the fixture discs a are also set to four groups. Specifically, the four groups of fixture discs a can be placed on the lower grinding disc 2 in a circumferential array. When the first reducer 4 is separated from the second reducer 6 and then re-engaged for use, the second motor 5 works to rotate the shaft 3 until the shaft 3 is at the origin reference position. At this time, the induction switch 9 transmits a signal to the controller, and the controller controls the second motor 5 to drive the shaft 3 and the lower grinding disc 2 to rotate at a corresponding angle until the first group of fixture discs on the lower grinding disc 2 is a rotates to just below the bottom of the first group of polishing heads, and then subsequent assembly can be carried out. After the assembly is completed, the output shaft of the second motor 5 is reversed until the rotating shaft 3 rotates and resets to the origin reference position; then the controller is used to control the second motor 5 so that the second motor 5 drives the rotating shaft 3 and the lower grinding disc 2 to rotate at a corresponding angle until the second group of fixture discs a on the lower grinding disc 2 rotates to just below the bottom of the second group of polishing heads, and then subsequent assembly can be carried out; this reciprocating process can realize the assembly connection of the four groups of fixture discs a with the four groups of polishing heads respectively.

[0044] like Figure 7 As shown, preferably, a bracket is provided inside the chassis 1, and the induction switch 9 is detachably mounted on the bracket to facilitate subsequent replacement and maintenance. At the same time, the second motor 5 is set as a stepping motor or a servo motor.

[0045] It should be noted that the controller mentioned above can be any suitable computing device, such as a personal computer, a server, a programmable controller (PLC controller for short), a single-chip microcomputer, etc., or it can be an integration of computer devices. The controller has functions such as receiving information and sending control commands. The controller can control the second motor 5 to perform corresponding actions through wired communication or wireless communication.

[0046] When the lower grinding disc 2 is in the second working condition for a long time to perform grinding work, in order to reduce the temperature of the upper surface of the lower grinding disc 2, a chamber can be opened inside the lower grinding disc 2, and the rotating shaft 3 is hollow and has partitions inside, so that the inside of the rotating shaft 3 is divided into a liquid inlet channel and a liquid outlet channel, and the liquid inlet channel and the liquid outlet channel are both connected to the chamber, and the external water inlet pipe and the water outlet pipe are connected to the liquid inlet channel and the liquid outlet channel respectively, and the water inlet pipe supplies water to the liquid inlet channel, and the water outlet pipe is used to discharge the water in the liquid outlet pipe to the outside, so that the water can flow in the internal chamber of the lower grinding disc 2, and the lower grinding disc 2 can be quickly cooled down. Of course, the cooling method of the lower grinding disc 2 can also be set to other conventional technical means in the prior art, such as air cooling and the like.

[0047] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A dual-mode rapid-switching lower grinding disc mechanism, characterized in that: The invention comprises a chassis (1), a lower grinding disc (2) being rotatably arranged on the top of the chassis (1), and a rotating shaft (3) extending into the interior of the chassis (1) being fixedly arranged at the bottom axis position of the lower grinding disc (2), and further comprising a first driving member and a second driving member arranged on the chassis (1), wherein the first driving member is connected to the rotating shaft (3) in a transmission manner, and the second driving member is connected to the rotating shaft (3) in a clutch transmission manner, and when the second driving member and the rotating shaft (3) are in an engaged state, the second driving member can drive the rotating shaft (3) and the lower grinding disc (2) to rotate at a corresponding angle, so as to drive the fixture disc on the lower grinding disc (2) to follow the corresponding angle; when the second driving member and the rotating shaft (3) are in a separated state, the first driving member can drive the rotating shaft (3) and the lower grinding disc (2) to rotate continuously, so that a rotating grinding surface is formed on the top of the lower grinding disc (2).

2. A dual-mode fast-switching lower grinding disc mechanism according to claim 1, characterized in that: The chassis (1) is provided with a first reducer (4) in transmission connection with the rotating shaft (3); at the input shaft of the first reducer (4), a first power input point and a second power input point are arranged in sequence from the inside to the outside in the axial direction, the first power input point is used to form a transmission match with the first driving member, and the second power input point is used to form a transmission match with the second driving member, and a clutch transmission connection is formed between the two power input points.

3. A dual-mode fast-switching lower grinding disc mechanism according to claim 2, characterized in that: The second driving member comprises a second motor (5) and a second reducer (6) fixedly arranged inside the chassis (1); the second motor (5) and the second reducer (6) are transmission-connected, and the transmission shaft of the second reducer (6) is engaged or disengaged with the second power input point via a clutch (7).

4. A dual-mode fast-switching lower grinding disc mechanism according to claim 2, characterized in that: The first driving member is a first motor (8) fixedly arranged inside the chassis (1), and a belt drive is formed between the first motor (8) and the first power input point.

5. The dual-mode rapid-switching lower grinding disc mechanism according to claim 1 is characterized in that: The top of the lower grinding disc (2) is provided with a plurality of groups of positioning holes arranged in a circumferential array, and the positioning holes are used to locate the position of the fixture disc on the lower grinding disc (2).

6. A dual-mode fast-switching lower grinding disc mechanism according to any one of claims 1-5, characterized in that: The lower grinding disc (2) has a chamber inside, and the rotating shaft (3) is hollow and has a partition bar inside, so that the inside of the rotating shaft (3) is divided into a liquid inlet channel and a liquid outlet channel, and the liquid inlet channel and the liquid outlet channel are both connected to the chamber.

7. The dual-mode rapid-switching lower grinding disc mechanism according to claim 3 is characterized in that: The invention also comprises a return member, the return member comprising an induction switch (9) and a controller arranged inside the chassis (1), and an induction sheet (10) for use with the induction switch (9) is arranged outside the rotating shaft (3), the induction switch (9) and the second motor (5) are both electrically connected to the controller, and the second motor (5) is controlled by the controller, and the position of the rotating shaft (3) when the induction sheet (10) is located on the working path of the induction switch (9) is taken as the origin reference, and the second motor (5) can drive the rotating shaft (3) to rotate a corresponding angle based on the origin reference.

8. The dual-mode rapid-switching lower grinding disc mechanism according to claim 7 is characterized in that: A bracket is arranged inside the chassis (1), and the induction switch (9) is detachably mounted on the bracket.

9. A dual-mode fast-switching lower grinding disc mechanism according to claim 7 or 8, characterized in that: The controller is a single chip microcomputer or a PLC.

10. A dual-mode fast-switching lower grinding disc mechanism according to claim 7 or 8, characterized in that: The second motor (5) is a stepping motor or a servo motor.

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