Brake disc cutting device

Abstract

The utility model relates to the technical field of brake disc cutting, in particular to a brake disc cutting device which comprises a workbench, a cutting device and a cutting device. The first moving mechanism is arranged on the workbench in the first direction; the rotating mechanism is arranged on the first moving mechanism, the first moving mechanism is used for driving the rotating mechanism to reciprocate in the first direction, and the rotating mechanism is used for fixing a to-be-cut workpiece and driving the workpiece to rotate; the second moving mechanism is arranged on the workbench in the second direction, and the first direction is perpendicular to the second direction; the cutting mechanism is arranged on the second moving mechanism, and the second moving mechanism is used for driving the cutting mechanism to reciprocate in the second direction; the negative pressure adsorption mechanism is arranged between the first moving mechanism and the second moving mechanism and used for adsorbing the side face, away from the rotating mechanism, of the to-be-cut workpiece. The brake disc cutting device aims at solving the problems of vibration deviation and poor equipment adaptability in the ceramic material cutting process.

Description

TECHNICAL FIELD

[0001] The utility model relates to brake disc cutting technical field, and more specifically, it relates to a brake disc cutting device. BACKGROUND

[0002] In the field of automobile brake system manufacturing, cutting processing of brake disc is the core link to determine product performance. Traditional carbon ceramic or alloy steel brake disc processing generally adopts the mode of mechanical clamping combined with one-way cutting, which has multiple technical bottlenecks: first, as described in the patent with publication number CN202220954187, the blank adhered in the casting process needs to be separated into independent brake discs, but the traditional clamping device relies on rigid clamps or simple adhesives, which is easy to cause deviation due to vibration during cutting, resulting in uneven thickness or even material cracking. Second, for high-hardness carbon ceramic materials, existing equipment mostly uses manual polishing or mechanical stamping burr cleaning, which is low in efficiency and cannot meet the needs of automatic production lines, resulting in prolonged processing cycle.

[0003] Further, traditional mechanical cutting has the problems of large heat-affected zone and high risk of material deformation, especially for brittle materials such as carbon ceramic, micro-cracks are easily generated on the cutting surface, affecting the stability of braking performance.

[0004] More importantly, the existing device lacks reusability and adaptability, cannot be dynamically adjusted according to the size of the workpiece, and is only suitable for specific diameter workpieces; and the traditional grinding wheel replacement efficiency is low, indirectly increasing the equipment downtime. These defects jointly restrict the large-scale and efficient production of high-value brake discs, and there is an urgent need for a new type of cutting device. SUMMARY

[0005] The main purpose of the utility model is to provide a brake disc cutting device, which aims to solve the problems of vibration deviation and poor equipment adaptability in ceramic material cutting.

[0006] In order to solve the above technical problems, a brake disc cutting device is provided, which comprises: a workbench, which is horizontally arranged;

[0007] A first moving mechanism is arranged on the workbench in a first direction;

[0008] A rotating mechanism is arranged on the first moving mechanism, the first moving mechanism is used to drive the rotating mechanism to move back and forth in the first direction, and the rotating mechanism is used to fix the workpiece to be cut and drive the workpiece to rotate;

[0009] A second moving mechanism is arranged on the workbench in a second direction, and the first direction and the second direction are perpendicular to each other;

[0010] A cutting mechanism is arranged on the second moving mechanism, and the second moving mechanism is used to drive the cutting mechanism to move back and forth in the second direction;

[0011] A negative pressure adsorption mechanism is arranged between the first moving mechanism and the second moving mechanism, and is used for adsorbing the workpiece to be cut away from the side surface of the rotating mechanism.

[0012] In any of the above technical solutions, further, the negative pressure adsorption mechanism comprises:

[0013] A supporting seat is arranged on the upper side of the workbench, and is provided with an annular clamping groove;

[0014] A suction cup is hollowly arranged, and is rotatably clamped at the annular clamping groove, and is provided with a plurality of first through holes on the side surface facing the workpiece;

[0015] A joint is fixed on the supporting seat, one end of the joint is in communication with the space at the annular clamping groove, and the other end of the joint is in communication with a negative pressure source.

[0016] In any of the above technical solutions, further, the negative pressure adsorption mechanism further comprises:

[0017] A fixing seat is fixedly arranged on the workbench, and is provided with a sliding groove, and the supporting seat is slidably arranged at the sliding groove;

[0018] Tension springs are respectively connected with the fixing seat and the supporting seat.

[0019] In any of the above technical solutions, further, the rotating mechanism comprises:

[0020] A driving motor is fixedly arranged on the moving part of the first moving mechanism;

[0021] A base disc is arranged on the rotating shaft of the driving motor, and is provided with a thermoplastic coating layer on the side surface close to the workpiece.

[0022] In any of the above technical solutions, further, a plurality of second through holes are arranged on the base disc.

[0023] In any of the above technical solutions, further, the cutting piece of the cutting mechanism is a diamond cutter.

[0024] The beneficial effects are that:

[0025] 1、The brake disc cutting device has the advantages that the annular clamping groove of the supporting seat is linked with the hollow suction cup, the negative pressure adsorption force is uniformly applied to the non-cutting surface of the workpiece, the thermoplastic coating layer of the base disc is softened and attached, a mechanical buffer layer is formed, and the micro-crack expansion of the carbon ceramic brake disc during cutting is effectively inhibited.

[0026] 2. The first moving mechanism and the second moving mechanism are vertically linked, cooperate with the high-speed rotation of the diamond cutter, and can dynamically adjust the cutting angle and the cutting path. Compared with the traditional one-way cutting, the structure supports complex contour machining, and compared with the prior art laser cutting, the device cost can be reduced.

[0027] 3. The thermoplastic coating on the surface of the base plate softens during high-temperature cutting, enhancing the adhesion to the workpiece; in combination with the uniform force of negative pressure adsorption, local stress concentration leading to carbon ceramic cracking is avoided. At the same time, the second through hole further assists in heat dissipation, prolonging the service life of the coating.

[0028] 4. The edge damage to the workpiece caused by the traditional clamping is avoided by negative pressure adsorption. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0030] Figure 1 is a perspective structural schematic view of a brake disc cutting device according to an embodiment of the present application;

[0031] Figure 2 is a sectional structural schematic view of a brake disc cutting device according to an embodiment of the present application;

[0032] Figure 3 is Figure 2 a local enlarged structural schematic view of A in FIG.

[0033] The following is an explanation of the reference signs:

[0034] 1. Workbench;

[0035] 2. First moving mechanism;

[0036] 3. Rotating mechanism; 301. Driving motor; 302. Base plate;

[0037] 4. Second moving mechanism;

[0038] 5. Cutting mechanism; 501. Cutting piece;

[0039] 6. Negative pressure adsorption mechanism; 601. Support seat; 602. Sucker; 603. Joint; 604. Fixed seat; 605. Tension spring. DETAILED DESCRIPTION

[0040] Hereinafter, example embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part but not all of the embodiments of the present application, and the present application can be implemented in various ways. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative work fall within the scope of the present application.

[0041] It should be noted that, as shown in the present application and claims, unless the context clearly indicates otherwise, the words "one", "a", "an", and / or "the" do not mean to specify a single number, but also include a plurality. Generally speaking, the terms "comprise" and "include" only indicate the inclusion of the steps and elements explicitly identified, and these steps and elements do not constitute an exclusive list, and the method or device can also include other steps or elements.

[0042] If the present application embodiments involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0043] In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixing", etc. should be broadly understood, for example, "fixing" can be fixed connection, or detachable connection, or integrated; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] In addition, if the present application embodiments involve "first", "second", etc. description, the "first", "second", etc. description is only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with "first", "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously meet the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection required by the present application.

[0045] The brake disc cutting device is described in detail below through the following embodiments.

[0046] In this embodiment, as shown in the drawings, the brake disc cutting device comprises a workbench 1 arranged horizontally; Figures 1 to 3

[0047] A first moving mechanism 2 is arranged on the workbench 1 in a first direction;

[0048] A rotating mechanism 3 is arranged on the first moving mechanism 2, the first moving mechanism 2 is used to drive the rotating mechanism 3 to reciprocate in the first direction, and the rotating mechanism 3 is used to fix the workpiece to be cut and drive the workpiece to rotate;

[0049] A second moving mechanism 4 is arranged on the workbench 1 in a second direction, and the first direction and the second direction are perpendicular to each other;

[0050] A cutting mechanism 5 is arranged on the second moving mechanism 4, and the second moving mechanism 4 is used to drive the cutting mechanism 5 to reciprocate in the second direction;

[0051] A negative pressure adsorption mechanism 6 is arranged between the first moving mechanism 2 and the second moving mechanism 4, and is used to adsorb the side of the workpiece to be cut away from the rotating mechanism 3.

[0052] In this technical solution, the workbench 1 adopts a steel structure platform. The first moving mechanism 2 is a screw block mechanism and is installed on the workbench 1 in the horizontal left-right direction, the screw rod of which is driven by a servo motor, and the stroke of the block is 0-300mm; the second moving mechanism 4 is installed on the right side area of the workbench 1 in the vertical up-down direction and is located at the right side of the first moving mechanism 2, and the screw pitch is 5mm. The rotating mechanism 3 is fixed on the block of the first moving mechanism 2 through an L-shaped fixing block, the negative pressure adsorption mechanism 6 is located between the two moving mechanisms, an inverted L-shaped connecting block is arranged on the block of the second moving mechanism 4 to avoid the negative pressure adsorption mechanism 6 during the up-down movement of the block, and the negative pressure adsorption mechanism 6 keeps a gap of 2-5mm with the non-cutting surface of the workpiece (the right surface of the workpiece). The cutting mechanism 5 is fixed on the connecting block of the block of the second moving mechanism 4, the brake disc to be cut is usually a carbon ceramic disc and is fixed on the base disc 302 of the rotating mechanism 3 through a thermosetting adhesive, the cutting mechanism 5 comprises a motor-driven bevel gear set and a cutting piece 501, and the cutting piece 501 is coaxially fixed with a bevel gear, so as to form a linkage cutting path in which the first moving mechanism 2 adjusts the left-right position of the rotating mechanism 3 in the horizontal direction, and the second moving mechanism 4 adjusts the position of the cutting mechanism 5 in the vertical direction.

[0053] ​In use, the negative pressure suction mechanism 6 is turned on, the first moving mechanism 2 drives the rotating mechanism 3 and the workpiece to the right, and the non-cutting surface of the workpiece is attached to the negative pressure suction mechanism 6, so that the non-cutting surface of the workpiece is adsorbed on the negative pressure suction mechanism 6. Then, according to the required cutting thickness, the workpiece is moved to the left, the cutting mechanism 5 and the second moving mechanism 4 are turned on to cut, and in the cutting process, the cutting mechanism 5 can be withdrawn according to the cutting progress, and the rotating mechanism 3 is turned on to drive the workpiece to rotate by a certain angle and then cut again, or the rotating mechanism 3 is turned on to drive the workpiece to rotate synchronously in the cutting process, and the height of the cutting mechanism 5 is gradually lowered as the cutting progresses.

[0054] The part cut off on the right side of the workpiece is adsorbed and fixed by the negative pressure suction mechanism 6, so as to avoid the case that the cut part directly falls and is damaged.

[0055] In the embodiment, as shown in Figure 3 The negative pressure suction mechanism includes:

[0056] The support seat 601 is arranged on the upper side of the workbench 1 and is provided with an annular clamping groove.

[0057] The suction cup 602 is hollow and is rotatably clamped in the annular clamping groove and is provided with a plurality of first through holes on the side facing the workpiece.

[0058] The joint 603 is fixed on the support seat 601, one end of which is in communication with the space in the annular clamping groove, and the other end is in communication with the negative pressure source.

[0059] In the embodiment, the negative pressure suction mechanism 6 further includes:

[0060] The fixed seat 604 is fixedly arranged on the workbench 1 and is provided with a sliding groove, and the support seat 601 is slidably arranged in the sliding groove.

[0061] The tension spring 605 is connected with the fixed seat 604 and the support seat 601, respectively.

[0062] In the technical solution, the support seat 601 is an aluminum alloy casting, the annular clamping groove is thick in the middle and thin at both ends, the hollow suction disc 602 extends from the left side of the support seat 601 and is clamped into the thick middle of the annular clamping groove in the form of clearance fit, and the hollow suction disc 602 can rotate freely around the annular clamping groove of the support seat 601. The side of the suction disc 602 facing the workpiece, that is, the left side, is uniformly provided with a plurality of first through holes with a diameter of Φ2 mm and a circumferentially uniform arrangement. The first through holes are in communication with the hollow part of the suction disc 602 by extending to the right. The joint 603 is in communication with a negative pressure source (such as a vacuum pump) through a quick release interface. When the suction disc 602 contacts the workpiece, the negative pressure forms an adsorption force field through the annular clamping groove and the first through holes, covering an area of more than 85% of the side of the workpiece. The fixed seat 604 is provided with a left-right penetrating rectangular sliding groove. The bottom of the support seat 601 is adapted to the structure of the sliding groove of the fixed seat 604, so that the support seat 601 can slide left and right along the sliding groove, and the support seat 601 is allowed to slide ±20 mm along the X axis. The right end of the tension spring 605 is fixed to the left side of the fixed seat 604, and the left end is connected to the side wall of the support seat 601 through a hook (not shown in the figure). In the normal state, the support seat 601 is kept in a state of having a gap with the cutting piece 501, so as to pull the cut part of the workpiece to the right during cutting, thereby reducing the acting force between the cut part and the cutting piece 501.

[0063] In some technical solutions, the diameter of the thick middle of the annular clamping groove is Φ180 mm, the diameter of the thin left side is Φ120 mm, the diameter of the thin right side is adapted to the joint 603 to be installed, and the outer diameter tolerance of the annular clamping groove and the hollow suction disc 602 is H7 / g6.

[0064] It is worth noting that the annular clamping groove of the support seat 601 is coaxially arranged with the hollow suction disc 602 and the suction disc 602 of the rotating mechanism 3.

[0065] In the embodiment, the rotating mechanism 3 comprises:

[0066] The driving motor 301 is fixedly arranged on the moving part of the first moving mechanism 2.

[0067] The base disc 302 is arranged on the rotating shaft of the driving motor 301 and is provided with a thermoplastic coating layer close to the side of the workpiece.

[0068] In the technical solution, the driving motor 301 is fixed on the L-shaped connecting block at the top of the sliding block of the first moving mechanism 2 by bolts, and the rotating shaft of the driving motor 301 is in interference fit with the base disc 302. The thermoplastic coating layer on the surface of the base disc 302 is an ABS resin layer with a thickness of 0.5 mm and a softening point of 120°C. The second through holes horizontally penetrate the base disc 302 from left to right, and are used for injecting cooling liquid (isopropyl alcohol) during cutting or for later solvent permeation to facilitate disassembly of the workpiece.

[0069] In the embodiment, the base disc 302 is provided with a plurality of second through holes.

[0070] In the technical solution, three groups of second through holes are evenly arranged on the circumference of the base plate 302, and are arranged in a 120° annular distribution. Each group of second through holes is provided with multiple rows and multiple columns. On the one hand, the second through holes can assist in heat dissipation during cutting. On the other hand, the second through holes can be used to apply solvent when removing the adhesive.

[0071] In some technical solutions, the spacing between adjacent second through holes in the same row is 15 mm, the spacing between adjacent second through holes in the same column is 10 mm, and the diameter of the second through hole is Φ3 mm.

[0072] In the embodiment, the cutting blade 501 of the cutting mechanism 5 is a diamond cutter.

[0073] In the technical solution, the diamond cutter is fixedly connected to a bevel gear of the cutting mechanism 5 through a rotating shaft. The density of the diamond particles on the outer edge of the cutter is 120 mesh.

[0074] In some technical solutions, during the cutting process, the lead screw driven rotating mechanism 3 of the first moving mechanism 2 drives the workpiece to move left, for example, at a feed speed of 0.1-5 m / min. The lead screw of the second moving mechanism 4 synchronously controls the cutter to press down, forming a spiral progressive cutting trajectory. When the cutting thickness reaches a set value (such as 0.5 mm), the motor of the second moving mechanism is reversed to lift the cutter, and the first moving mechanism 2 is reset to complete a single cycle.

[0075] In some specific technical solutions, the control system of the cutting device adopts closed-loop servo driving. The movement of the first moving mechanism 2 and the second moving mechanism 4 is synchronized with the motor of the rotating mechanism 3 and the cutting structure through code. The rotation speed of the rotating mechanism 3 and the feed speed of the second moving mechanism 4 are matched according to the rule that the workpiece is rotated by 0.5° for every 1 mm of downward cutting.

[0076] In another technical solution, the negative pressure adsorption mechanism 6 monitors the adsorption force in real time through a pressure sensor. When the pressure fluctuation is detected to be greater than 10%, an emergency stop is triggered to prevent the workpiece from falling off.

[0077] In some other technical solutions, the cutting device is also provided with a cooling device. The cooling device includes a spray head arranged on the workbench 1 and a water pump in communication with the spray head pipeline. The water pump is in communication with a water source.

[0078] It is worth noting that the support seat 601 and the suction cup 602 can be arranged in a split structure for assembly with each other during actual production.

[0079] Having described above several embodiments of the disclosure, any modifications and variations that fall within the scope of the described embodiments are also intended to be within the scope of the disclosure. As will be apparent to those skilled in the art, some modifications and variations to the embodiments described above can be practiced while staying within the scope and spirit of the described embodiments. The foregoing description of the described embodiments has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the described embodiments to the precise form disclosed. Many modifications and variations are possible in light of the above teachings. It is intended that the disclosed embodiments be limited only by the claims.

Claims

1. A brake disc cutting apparatus, characterised in that, The utility model relates to a cutting device for cutting workpiece, comprising: a workbench (1) arranged horizontally; a first moving mechanism (2) arranged on the workbench (1) and moving along a first direction; a rotating mechanism (3) arranged on the first moving mechanism (2), the first moving mechanism (2) drives the rotating mechanism (3) to move back and forth along the first direction, and the rotating mechanism (3) is used for fixing the workpiece to be cut and rotating the workpiece; a second moving mechanism (4) arranged on the workbench (1) and moving along a second direction, the first direction and the second direction are perpendicular to each other; a cutting mechanism (5) arranged on the second moving mechanism (4), the second moving mechanism (4) drives the cutting mechanism (5) to move back and forth along the second direction; a negative pressure adsorption mechanism (6) arranged between the first moving mechanism (2) and the second moving mechanism (4), and used for adsorbing the workpiece to be cut away from the side of the rotating mechanism (3).

2. The brake disc cutting apparatus of claim 1, wherein, The negative pressure adsorption mechanism comprises: a support seat (601) arranged on the upper side of the workbench (1) and provided with an annular clamping groove; a suction cup (602) arranged hollowly and rotatably clamped in the annular clamping groove, and provided with a plurality of first through holes on the side facing the workpiece; a joint (603) fixed on the support seat (601), one end of the joint (603) is communicated with the space in the annular clamping groove, and the other end of the joint (603) is communicated with a negative pressure source.

3. The brake disc cutting apparatus of claim 2, wherein, The negative pressure adsorption mechanism (6) further comprises: a fixed seat (604) fixedly arranged on the workbench (1) and provided with a sliding groove, the support seat (601) is slidably arranged in the sliding groove; a tension spring (605) connected with the fixed seat (604) and the support seat (601) respectively.

4. The brake disc cutting apparatus of claim 1, wherein, The rotating mechanism (3) comprises: a driving motor (301) fixedly arranged on the moving part of the first moving mechanism (2); a base disc (302) arranged on the rotating shaft of the driving motor (301) and provided with a thermoplastic coating on the side close to the workpiece.

5. The brake disc cutting apparatus of claim 4, wherein, The base disc (302) is provided with a plurality of second through holes.

6. The brake disc cutting apparatus of claim 1, wherein, The cutting blade (501) of the cutting mechanism (5) is a diamond cutter.

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