Self-correcting feeding mechanism in grinding equipment

Abstract

The invention discloses a self-correcting feeding mechanism in grinding equipment, which comprises a mounting base and a transverse moving slide rail arranged on the mounting base, a bearing seat is mounted on the transverse moving slide rail, and a lead screw driving mechanism for driving the bearing seat to move along the transverse moving slide rail is arranged on the mounting base; an inclined sliding table and an inclined sliding rail installed on the inclined sliding table are installed on the bearing seat, the inclined sliding rail inclines towards one side of the feeding direction, a balance weight sliding table is installed on the inclined sliding rail, a rotating mechanism and a tool installed on the rotating mechanism are installed on the balance weight sliding table, and the tool is used for clamping a workpiece. The current situation that in the adjusting mode that a workpiece moves and makes contact with a grinding piece through a lead screw mechanism in the prior art, the minimum moving distance is limited by the screw pitch, the non-contact situation occurs in the grinding process, and transition marks exist on the grinding surface is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of surface polishing and grinding of electronic products, and particularly to a self-correcting feeding mechanism in a grinding device. Background Art

[0002] The final processing step for the surface of the housing of an electronic product is polishing and grinding. Specific grinding processing is achieved through a grinding device, which generally includes a grinding mechanism and a grinding disc integrated on the grinding mechanism. At the same time, there is also a lead screw mechanism for adjusting the displacement of the workpiece. A precision dividing head is installed on the lead screw mechanism, and a tooling fixture integrated on the precision dividing head. After the workpiece is reliably clamped on the tooling fixture, the lead screw mechanism drives the precision dividing head and the tooling fixture to move, so as to adjust the workpiece to contact the grinding disc.

[0003] The position of the workpiece relative to the grinding disc is mainly adjusted by the lead screw mechanism. The displacement in the lead screw mechanism is based on the pitch to define the minimum displacement. A finer pitch cannot meet the stable adjustment under load, while a coarser pitch results in the inability to continuously maintain contact between the workpiece and the grinding disc during the grinding process, ultimately leading to the situation that there may be transition marks on the surface of the workpiece after grinding, affecting the surface grinding quality. Summary of the Invention

[0004] (I) Technical Problem

[0005] The purpose of the present invention is to provide a self-correcting feeding mechanism in a grinding device, which solves the problem that in the prior art, in the adjustment method of moving the workpiece by the lead screw mechanism to contact the grinding disc, the minimum moving distance is limited by the pitch, resulting in the situation of non-contact during the grinding process, causing transition marks on the grinding surface.

[0006] (II) Technical Solution

[0007] To achieve the above object, the present invention provides the following technical solution:

[0008] A self-correcting feeding mechanism in a grinding device includes a mounting base and a transverse sliding rail provided on the mounting base. A carrier seat is installed on the transverse sliding rail, and a lead screw driving mechanism for driving the carrier seat to move along the transverse sliding rail is provided on the mounting base; an inclined sliding table is installed on the carrier seat, and an inclined sliding rail installed on the inclined sliding table. The inclined sliding rail is inclined towards the feeding direction. A counterweight sliding table is installed on the inclined sliding rail, and a rotating mechanism and a tooling installed on the rotating mechanism are installed on the counterweight sliding table. The tooling is used for clamping the workpiece.

[0009] Preferably, the inclination angle of the inclined sliding rail is 10°.

[0010] Preferably, a first inclined surface is provided on the inclined sliding table, and a second inclined surface is provided on the counterweight sliding table. The first inclined surface is parallel to the second inclined surface. First positioning steps are spaced apart on the first inclined surface, and second positioning steps are spaced on the second inclined surface. The inclined slide rail is installed between the first positioning step and the second positioning step on the corresponding side.

[0011] Preferably, the inclined slide rail includes a first slide rail installed on the first positioning step and at least two first sliders installed on the second positioning step. The first sliders are slidably engaged with the first slide rail.

[0012] Preferably, a damping structure is installed on the counterweight sliding table and / or the inclined sliding table.

[0013] Preferably, a limit stop block for limiting the sliding limit position of the counterweight sliding table is installed on the bearing seat.

[0014] Preferably, the transverse slide rail includes a second slide rail installed at intervals on the installation base and a second slider installed on the bearing seat. The second slider is slidably engaged with the second slide rail.

[0015] Preferably, the lead screw driving mechanism includes a driving lead screw rotatably installed on the installation base. A first driving motor is connected to the driving lead screw. A connecting block is installed on the bearing seat, and a lead screw nut is installed on the connecting block. The lead screw nut is in threaded engagement with the driving lead screw.

[0016] Preferably, a support block is installed on the installation base, and the second slide rail is installed on the support block.

[0017] Preferably, the rotating mechanism includes a divider installed on the counterweight sliding table, and a second driving motor is connected to the divider.

[0018] (III) Beneficial effects

[0019] By adding an inclined sliding table to the lead screw driving mechanism and installing the counterweight sliding table through the inclined slide rail, after the rotating mechanism and the tooling are installed on the counterweight sliding table in sequence, under the gravity of the counterweight sliding table, the rotating mechanism and the tooling as a whole will move relative to the inclined slide rail, so that the workpiece clamped on the tooling can be kept in contact with the grinding position, and the reverse pushing force generated during the grinding process will also enable the workpiece to have relative floating, so as to realize self-correction adjustment of the grinding thickness during the grinding process;

[0020] The lead screw driving mechanism mainly realizes position adjustment over a large distance. When approaching the small gap of the grinding disc finally, the self-correction adjustment structure composed of the counterweight sliding table, the inclined slide rail and the inclined sliding table ensures that the workpiece continuously contacts the grinding area to complete the whole grinding process;

[0021] After the above improvements, continuous contact can also be maintained when the workpiece is rotated to the grinding position by the rotating mechanism, thus avoiding the generation of transition marks. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0023] Figure 2 is a schematic structural diagram of the first perspective of the sliding fit between the counterweight slide and the inclined slide in the embodiment of the present invention;

[0024] Figure 3 is a schematic structural diagram of the second perspective of the sliding fit between the counterweight slide and the inclined slide in the embodiment of the present invention;

[0025] Figure 4 is a schematic structural diagram of the first perspective of the carrier seat mounted on the lead screw drive mechanism in the embodiment of the present invention;

[0026] Figure 5 is a schematic structural diagram of the second perspective of the carrier seat mounted on the lead screw drive mechanism in the embodiment of the present invention;

[0027] Figure 6 is a schematic structural diagram of the application state of the embodiment of the present invention;

[0028] In Figures 1 to 6 the correspondence between the component names or lines and the drawing reference numerals is as follows:

[0029] Mounting base 1, transverse sliding rail 2, second sliding rail 21, second slider 22, carrier seat 3, lead screw drive mechanism 4, drive lead screw 41, first drive motor 42, connecting block 43, lead screw nut 44, inclined slide 5, first inclined surface 51, first positioning step 52, inclined sliding rail 6, first sliding rail 61, first slider 62, counterweight slide 7, second inclined surface 71, second positioning step 72, tooling 8, limit stop 9, support block 10, indexing cam 11, second drive motor 12. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0031] See Figure 1 、 Figure 6As shown in the figure, in an embodiment of the present invention, a self-correcting feeding mechanism in a grinding device is proposed. It is integrated into an existing grinding device and mainly used for clamping workpieces and controlling feeding. The grinding device includes a grinding mechanism and a grinding disc integrated on the grinding mechanism. During the specific grinding process, the workpiece contacts the grinding disc for grinding and polishing. Specifically, it includes a mounting base 1 and a transverse sliding rail 2 provided on the mounting base 1. A carrier seat 3 is installed on the transverse sliding rail 2. A lead screw driving mechanism 4 for driving the carrier seat 3 to move along the transverse sliding rail 2 is provided on the mounting base 1. By driving the carrier seat to move back and forth along the transverse sliding rail 2 through the lead screw mechanism, the movement adjustment of the workpiece relative to the grinding mechanism is realized. The lead screw driving mechanism 4 can achieve rapid movement adjustment. However, due to the limitation of the minimum pitch, it cannot ensure that the contact depth and position between the workpiece and the grinding disc are exactly the same after each adjustment. In the actual grinding process, processing traces of transition marks are likely to appear.

[0032] To solve the situation that the feeding stroke of the lead screw mechanism is inconsistent, resulting in transition marks on the surface of the workpiece during grinding, an inclined sliding table 5 is installed on the carrier seat 3, and an inclined sliding rail 6 is installed on the inclined sliding table 5. The inclined sliding rail 6 is inclined towards the feeding direction. A counterweight sliding table 7 is installed on the inclined sliding rail 6. A rotating mechanism and a tooling 8 installed on the rotating mechanism are installed on the counterweight sliding table 7. The tooling 8 is used for clamping the workpiece. A self-correcting adjustment structure is formed by the counterweight sliding table 7, the inclined sliding rail 6, and the inclined sliding table 5. Under the gravity of the counterweight sliding table 7, the rotating mechanism, and the tooling 8, the whole can slide relative to the inclined sliding rail 6 towards the grinding mechanism until it moves to the point where the workpiece abuts against the grinding disc, ensuring that the workpiece and the grinding disc can maintain contact throughout the grinding process. At the same time, when the angle of the tooling 8 is adjusted through the rotating mechanism and the workpiece rotates relative to the grinding disc, contact can also be maintained, continuously completing the grinding action, thus effectively avoiding the situation of transition marks.

[0033] Therefore, after quickly adjusting the position through the lead screw mechanism, the self-gravity of the counterweight sliding table 7, the rotating mechanism, and the tooling 8 is used to keep the workpiece and the grinding disc in continuous contact for grinding, effectively solving the problem of inconsistency in the existing technology when simply using the lead screw mechanism for feeding stroke control.

[0034] Since the rotating mechanism and the tooling 8 both adopt the structures in the existing grinding equipment and have a certain weight, in order to ensure that the counterweight slide 7 and the integrated structures thereon can slide smoothly relative to the inclined slide rail 6, on the one hand, the inclination angle of the inclined slide rail 6 is designed to be 10°, and on the other hand, the weight of the counterweight slide 7 is made greater than 30 Kg, so as to adjust the relative sliding speed and the acting force when contacting the grinding disc in turn. During manufacturing, the above-mentioned sliding speed and the acting force applied to the grinding disc can be adjusted by changing the installation angle of the inclined slide rail 6 and the weight of the counterweight slide 7.

[0035] In addition, a more general method can also be considered. For example, a damping structure is installed on the counterweight slide 7 and / or the inclined slide 5. The damping structure is used to apply relative sliding friction. For example, a floating damping block or a damping block connected by a spring can be adopted. The purpose is to apply a certain sliding friction during the sliding process of the counterweight slide 7 relative to the inclined slide 5 to maintain sliding stability, and to control the sliding speed and the acting force applied to the grinding disc. Specifically, the damping structure can be set on either the counterweight slide 7 or the inclined slide 5, and the surface generating the sliding friction abuts against the other one.

[0036] Specifically, in order to position and install the inclined slide rail 6 to ensure sliding stability and avoid the situation of sliding resistance caused by unbalanced installation of the inclined slide rail 6, such as Figure 2 、 Figure 3 As shown, a first inclined surface 51 is provided on the inclined slide 5, and a second inclined surface 71 is provided on the counterweight slide 7. The first inclined surface 51 is parallel to the second inclined surface 71. At the same time, first positioning steps 52 are spaced apart on the first inclined surface 51, and second positioning steps 72 are spaced on the second inclined surface 71. The inclined slide rail 6 is installed between the first positioning step 52 and the second positioning step 72 on the corresponding side. Through the matching of the first positioning step 52 and the second positioning step 72 during processing, it is ensured that the sliding stability can be guaranteed after the inclined slide rail 6 is installed.

[0037] Among them, the inclined slide rail 6 includes a first slide rail 61 installed on the first positioning step 52 and at least two first sliders 62 installed on the second positioning step 72. The first sliders 62 are slidably matched with the first slide rail 61. The inclined slide rail 6 is a split structure. After being respectively installed on the first positioning step 52 and the second positioning step 72, it can achieve reference positioning and ensure smooth sliding after sliding fit.

[0038] In order to limit the extreme position of the counterweight slider relative to the inclined slide 5 and avoid the risk of the counterweight slide 7 sliding out, it is necessary to limit the extreme position. Therefore, a limit stop 9 for limiting the sliding extreme position of the counterweight slide 7 is installed on the carrier 3.

[0039] Specifically, after integrating and installing various components, the carrier seat 3 has a relatively large weight and needs to satisfy stable sliding. At the same time, it is also necessary to connect the carrier seat 3 and the mounting base 1 through the transverse sliding rail 2. The transverse sliding rail 2 includes a second sliding rail 21 spacedly installed on the mounting base 1 and a second slider 22 installed on the carrier seat 3. The second slider 22 is slidably engaged with the second sliding rail 21.

[0040] The relative sliding of the carrier seat 3 is driven by a lead screw drive mechanism 4. Among them, as Figure 4 、 Figure 5 shown, the lead screw drive mechanism 4 includes a drive lead screw 41 rotatably installed on the mounting base 1. A first drive motor 42 is connected to the drive lead screw 41. A connection block 43 is installed on the carrier seat 3. A lead screw nut 44 is installed on the connection block 43. The lead screw nut 44 is in threaded engagement with the drive lead screw 41. By controlling the forward or reverse rotation of the first drive motor 42, the drive lead screw 41 is in threaded (helical) engagement with the lead screw nut, and the carrier seat 3 is restricted to slide on the transverse sliding rail 2, thereby driving the carrier seat 3 to move forward and backward relative to the transverse sliding rail 2 to adjust the relative position.

[0041] Meanwhile, in order to facilitate the formation of an installation space for accommodating the entire lead screw drive mechanism 4 between the carrier seat 3 and the mounting base 1, a support block 10 is installed on the mounting base 1. The second sliding rail 21 is installed on the support block 10. The overall height of the carrier seat 3 is raised through the support block 10 to form an installation space.

[0042] Specifically, in order to achieve relative sliding balance and stability, the number of inclined sliding rails 6, transverse sliding rails 2, etc. is at least two.

[0043] During the grinding process of the workpiece, angle adjustment is required. The tooling 8 is driven to rotate by a rotating mechanism. The rotating mechanism includes a dividing head 11 installed on the counterweight slide 7. A second drive motor 12 is connected to the dividing head 11. The dividing head 11 is of high precision and can achieve angular rotation under the drive of the second drive motor 12.

[0044] It should be noted that there can be multiple choices for some existing parts not detailed here, or the parts in the existing grinding equipment can be directly used.

[0045] In the present invention, unless otherwise clearly defined and limited, terms such as "installed", "connected", "joined", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0047] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A self-correcting feeding mechanism in a grinding device, characterized in that: It comprises a mounting base and a transverse slide rail arranged on the mounting base, a bearing seat is mounted on the transverse slide rail, and a lead screw driving mechanism for driving the bearing seat to move along the transverse slide rail is arranged on the mounting base; An inclined slide and an inclined slide rail installed on the inclined slide are installed on the bearing seat, the inclined slide rail is inclined toward one side of the feeding direction, a counterweight slide is installed on the inclined slide rail, a rotating mechanism and a tooling installed on the rotating mechanism are installed on the counterweight slide, and the tooling is used to clamp the workpiece.

2. The self-correcting feeding mechanism in a grinding device according to claim 1, characterized in that: The inclination angle of the inclined slide rail is 10°.

3. The self-correcting feeding mechanism in a grinding device according to claim 2, characterized in that: The inclined slide is provided with a first inclined surface, and the counterweight slide is provided with a second inclined surface, and the first inclined surface is parallel to the second inclined surface; The first inclined surface is provided with first positioning steps at intervals, the second inclined surface is provided with second positioning steps at intervals, and the inclined slide rail is installed between the first positioning step and the second positioning step on the corresponding side.

4. The self-correcting feeding mechanism in a grinding device according to claim 3, characterized in that: The inclined slide rail comprises a first slide rail mounted on a first positioning step and at least two first sliding blocks mounted on a second positioning step, wherein the first sliding blocks are slidably matched with the first slide rail.

5. A self-correcting feeding mechanism in a grinding device according to any one of claims 2 to 4, characterized in that: The counterweight slide and / or the inclined slide are / is provided with a damping structure.

6. The self-correcting feeding mechanism in a grinding device according to claim 5, characterized in that: A limit block for limiting the sliding limit position of the counterweight slide is installed on the bearing seat.

7. The self-correcting feeding mechanism in a grinding device according to claim 6, characterized in that: The transverse sliding rail comprises a second sliding rail installed on the mounting base at intervals, and a second sliding block installed on the bearing seat, and the second sliding block is slidably matched with the second sliding rail.

8. The self-correcting feeding mechanism in a grinding device according to claim 7, characterized in that: The screw drive mechanism includes a driving screw rotatably mounted on the mounting base, the driving screw is connected to a first driving motor, a connecting block is mounted on the bearing seat, a screw nut is mounted on the connecting block, and the screw nut is threadably matched with the driving screw.

9. The self-correcting feeding mechanism in a grinding device according to claim 7, characterized in that: A support block is installed on the installation base, and the second slide rail is installed on the support block.

10. The self-correcting feeding mechanism in a grinding device according to claim 9, characterized in that: The rotating mechanism comprises a divider mounted on the counterweight slide, and the divider is connected to a second driving motor.

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