Automatic grinding platform

Abstract

The utility model discloses an automatic grinding platform which is characterized in that a first linear displacement platform and a second linear displacement platform are arranged in parallel side by side and are perpendicular to a third linear displacement platform; the first linear displacement platform comprises a first linear translation driving mechanism and a workpiece clamp; the workpiece clamp is mounted on a translation part of the first linear translation driving mechanism; the second linear displacement platform comprises a second linear translation driving mechanism and a feeding mechanism, the feeding assembly is installed on a translation part of the second linear translation driving mechanism, and the feeding mechanism comprises a plurality of feeding cavities and injection ports located in the feeding cavities correspondingly; and the third linear displacement platform comprises a third linear translation driving mechanism and a grinding assembly. And meanwhile, the grinding head does not need to be replaced for reference alignment during grinding, so that the grinding efficiency is high, the situation of grinding deviation caused by deviation of the grinding head due to replacement of the grinding head is also avoided, and the product quality of the lead screw nut is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automatic grinding processing equipment, and particularly relates to an automatic grinding platform. BACKGROUND

[0002] At present, the displacement of the screw nut on the screw rod needs to realize high-precision movement, so that the mechanism matched with the screw nut is applied to the machining equipment with high-precision movement. However, in the prior art, for the machining of the screw nut, the internal thread of the screw nut is first turned into a shape by using a lathe, and then the internal thread is ground and machined. During grinding, single grinding stations are used for grinding. The single grinding station is a kind of screw nut internal thread grinding quick tool setting device as disclosed in the Chinese patent with the publication number CN216000073U. The grinding only realizes one grinding process requirement, such as fine grinding, coarse grinding or semi-fine grinding. However, after coarse grinding or semi-fine grinding, the grinding wheel needs to be replaced, so that after replacement, the tool needs to be reset, which makes the machining operation complicated, and after replacing the grinding wheel, the second grinding may be eccentric, so that the unqualified rate after grinding is high. Therefore, improvement is urgently needed. SUMMARY

[0003] The automatic grinding platform is designed to solve the above technical problems.

[0004] The automatic grinding platform designed by the utility model, including base, and first linear displacement platform, second linear displacement platform and third linear displacement platform installed on the base, the first linear displacement platform and the second linear displacement platform are arranged in parallel and side by side, and both of them are arranged perpendicularly to the third linear displacement platform;The first linear displacement platform comprises a first linear translation driving mechanism and a workpiece clamp, and the workpiece clamp is installed on the translation part of the first linear translation driving mechanism;The second linear displacement platform comprises a second linear translation driving mechanism and a feeding mechanism, and the feeding assembly is installed on the translation part of the second linear translation driving mechanism. The feeding mechanism comprises a plurality of feeding cavities and injection ports respectively located in each feeding cavity;The third linear displacement platform comprises a third linear translation driving mechanism and a grinding assembly, and the grinding assembly comprises a plurality of grinding heads and a plurality of rotary driving devices. Each rotary driving device is installed on the translation part of the second linear translation driving mechanism. Each grinding head is installed on the rotation part of the plurality of rotary driving devices, and the center distance between the plurality of grinding heads is equal to the center distance between the plurality of feeding cavities.

[0005] According to one embodiment of the utility model, first linear translation drive mechanism includes first long frame, and first telescopic device and first linear guide rail are arranged along the length direction of first long frame, first long frame is fixed on base, first telescopic device and first linear guide rail are all installed on first long frame, the telescopic part of first telescopic device and the slider of first linear guide rail are connected with workpiece clamp respectively.

[0006] According to one embodiment of the utility model, workpiece clamp includes first movable seat, first clamping body and second clamping body, the telescopic part of first telescopic device and the slider of first linear guide rail are all connected with first movable seat, the opposite side of first clamping body and second clamping body is provided with clamping groove, first clamping body and second clamping body are mutually symmetrical and are connected with each other through detachable structure, so that the clamping groove of first clamping body and the clamping groove of second clamping body are mutually symmetrical and are spliced to form clamping cavity, and first clamping body is installed on first movable seat.

[0007] According to one embodiment of the utility model, second linear translation drive mechanism includes second long frame, and second telescopic device and second linear guide rail are arranged along the length direction of second long frame, second long frame is fixed on base, second telescopic device and second linear guide rail are all installed on second long frame, the telescopic part of second telescopic device and the slider of second linear guide rail are connected with feeding mechanism respectively.

[0008] According to one embodiment of the utility model, feeding mechanism includes second movable seat and feeding block installed on second movable seat, the telescopic part of second telescopic device and the slider of second linear guide rail are all connected with second movable seat, each feeding cavity is arranged on feeding block, and the injection port at each feeding cavity is respectively provided with electromagnetic valve or connected with electromagnetic valve through pipeline.

[0009] According to one embodiment of the utility model, third linear translation drive mechanism includes third long frame, first motor, and ball screw and third linear guide rail are arranged along the length direction of third long frame, third long frame is fixed on base, first motor, ball screw and second linear guide rail are all installed on third long frame, the ball slider of ball screw is installed with third movable seat, the slider of third linear guide rail is connected with third movable seat, each rotary drive device is installed on third movable seat, and the rotating shaft of first motor is connected with one end of ball screw.

[0010] According to one embodiment of the utility model, each said rotation driving device includes second motor, axle seat and shaft coupling, the shaft coupling is arranged in the cavity of axle seat, the axle of second motor is connected with one end of shaft coupling, the other end of shaft coupling of each said rotation driving device respectively passes through corresponding axle seat and is connected with multiple grinding head respectively.

[0011] According to one embodiment of the utility model, the number of grinding head, rotation driving device and loading cavity is three, three grinding heads are coarse grinding screw rod, half fine grinding screw rod and fine grinding screw rod respectively.

[0012] According to one embodiment of the utility model, coarse grinding screw rod, half fine grinding screw rod and fine grinding screw rod are composed of thread grinding section and connecting section.

[0013] According to one embodiment of the utility model, the axis of each thread grinding section is located on the same horizontal plane

[0014] The automatic grinding platform designed in the utility model, when grinding, coarse grinding screw rod, half fine grinding screw rod and fine grinding screw rod grind the screw nut clamped by the clamped cavity in turn, to realize the coarse grinding, half fine grinding and fine grinding of screw nut, make the precision of screw nut product higher, simultaneously, when grinding, need not replace grinding head to make reference, make grinding efficiency high, also avoid the situation of grinding deviation of grinding head due to replacing grinding head, lead to grinding deviation, improve the product quality of screw nut. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is whole structure schematic view (one) of automatic grinding platform;

[0016] Figure 2 It is whole structure schematic view (two) of automatic grinding platform;

[0017] Figure 3 It is whole structure schematic view (three) of automatic grinding platform;

[0018] Figure 4 It is sectional view;

[0019] Figure 5 It is structure schematic view of loading block.

[0020] Label: 1, base; 2, first linear displacement platform; 3, second linear displacement platform; 4, third linear displacement platform; 5, screw nut; 21, first long frame; 22, first linear guide rail; 23, first telescopic device; 24, first movable seat; 25, workpiece clamp; 251, first clamping body; 252, second clamping body; 253, clamping groove; 31, second long frame; 32, second linear guide rail; 33, second telescopic device; 34, second movable seat; 35, feeding block; 351, feeding cavity; 352, injection port; 41, third long frame; 42, third linear guide rail; 43, ball screw; 44, first motor; 45, rotary driving device; 46, grinding head; 451, second motor; 452, shaft seat; 453, shaft coupling; 461, threaded grinding section; 462, connecting section; DETAILED DESCRIPTION

[0021] In order to make the person skilled in the art better understand the utility model, so that the scope of protection of the utility model is more clearly limited, the utility model is described in detail below according to some specific embodiments of the utility model. It should be noted that the following is only some specific embodiments of the utility model concept, and only a part of the embodiments of the utility model, and the specific and direct description of the related structure is only for the convenience of understanding the utility model, and each specific feature does not limit the implementation range of the utility model directly and naturally. The routine selection and replacement made by the person skilled in the art under the guidance of the utility model concept should be regarded as being within the scope of the utility model claimed.

[0022] Embodiment:

[0023] As Figures 1-5As shown, the automatic grinding platform described in the embodiment comprises a base 1, and a first linear displacement platform 2, a second linear displacement platform 3 and a third linear displacement platform 4 installed on the base 1, the first linear displacement platform 2 and the second linear displacement platform 3 are arranged in parallel side by side and perpendicular to the third linear displacement platform 4; the first linear displacement platform 2 comprises a first linear translation driving mechanism and a workpiece clamp 25, the workpiece clamp 25 is installed on the translation part of the first linear translation driving mechanism; the second linear displacement platform 3 comprises a second linear translation driving mechanism and a feeding mechanism, the feeding assembly is installed on the translation part of the second linear translation driving mechanism, and the feeding mechanism comprises a plurality of feeding cavities 351 and injection ports 352 respectively located in each feeding cavity 351; the third linear displacement platform 4 comprises a third linear translation driving mechanism and a grinding assembly, the grinding assembly comprises a plurality of grinding heads 46 and a plurality of rotary driving devices 45, each rotary driving device 45 is installed on the translation part of the second linear translation driving mechanism, each grinding head 46 is installed on the rotation part of the plurality of rotary driving devices 45, and the center distance between the plurality of grinding heads 46 is equal to the center distance between each feeding cavity 351, wherein the number of the grinding head 46, the rotary driving device 45 and the feeding cavity 351 is three, the three grinding heads 46 are respectively a rough grinding screw, a semi-fine grinding screw and a fine grinding screw, and the rough grinding screw, the semi-fine grinding screw and the fine grinding screw are composed of a threaded grinding section 461 and a connecting section 462, and the axis of each threaded grinding section 461 is located on the same horizontal plane.

[0024] In the embodiment, the first linear translation driving mechanism comprises a first elongated frame 21, a first telescopic device 23 and a first linear guide rail 22 arranged along the length direction of the first elongated frame 21, the first elongated frame 21 is fixed on the base 1, the first telescopic device 23 and the first linear guide rail 22 are installed on the first elongated frame 21, and the extension part of the first telescopic device 23 and the sliding block of the first linear guide rail 22 are respectively connected with the workpiece clamp 25; wherein the first telescopic device 23 drives the workpiece clamp 25 to move linearly and reciprocally along the length direction of the first elongated frame 21.

[0025] Preferably, the workpiece clamp 25 comprises a first movable seat 24, a first clamping body 251 and a second clamping body 252, the telescopic part of the first telescopic device 23 and the slider of the first linear guide rail 22 are connected with the first movable seat 24, the opposite sides of the first clamping body 251 and the second clamping body 252 are provided with clamping grooves 253, the first clamping body 251 and the second clamping body 252 are symmetrically arranged and connected with each other through a detachable structure, so that the clamping grooves 253 of the first clamping body 251 and the second clamping body 252 are symmetrically arranged to form a clamping cavity, the first clamping body 251 is installed on the first movable seat 24, and the detachable structure is a matched connection of a bolt and a threaded hole.

[0026] The clamping cavity clamps the lead screw nut 5, when one grinding head 46 is coaxial with the clamped lead screw nut 5, the lead screw nut 5 moves towards the third displacement linear displacement platform, and at the same time the grinding head 46 rotates, so that the threaded grinding section 461 of the grinding head 46 is threadedly connected with the internal thread of the lead screw nut 5 to grind.

[0027] In the embodiment, the second linear translation driving mechanism comprises a second elongated frame 31, a second telescopic device 33 and a second linear guide rail 32 arranged along the length direction of the second elongated frame 31, the second elongated frame 31 is fixed on the base 1, the second telescopic device 33 and the second linear guide rail 32 are installed on the second elongated frame 31, and the telescopic part of the second telescopic device 33 and the slider of the second linear guide rail 32 are connected with the feeding mechanism respectively; specifically, the feeding mechanism comprises a second movable seat 34 and a feeding block 35 installed on the second movable seat 34, the telescopic part of the second telescopic device 33 and the slider of the second linear guide rail 32 are connected with the second movable seat 34, and each feeding cavity 351 is arranged on the feeding block 35, and an electromagnetic valve is installed at each injection port 352 of the feeding cavity 351 or connected with the electromagnetic valve through a pipeline. The third linear translation driving mechanism drives the three grinding heads 46 to move towards the second linear displacement platform 3 at the same time, so that the three grinding heads 46 are coaxially arranged with the feeding cavities 351 respectively, then the feeding block 35 moves towards the third displacement linear displacement platform, so that the threaded grinding sections 461 of the three grinding heads 46 are inserted into the feeding cavities 351 respectively, at this time, according to the grinding type (such as rough grinding, fine grinding or semi-fine grinding), the electromagnetic valve of one feeding cavity 351 is powered on to make the injection port 352 spray the corresponding grinding material, and the grinding head 46 is driven to rotate by the rotary driving device 45 during the grinding material spraying process, so that the grinding material can be uniformly coated.

[0028] Preferably, the first and second long-shaped frames 21 and 31 are both in the shape of a "U", and the first and second telescopic devices 23 and 33 are both in the form of a pneumatic cylinder, a hydraulic cylinder or an electric push rod. When the pneumatic cylinder or the hydraulic cylinder is used, the circulation speed of the control fluid is controlled to slow down the extension or retraction speed of the telescopic rod, and when the electric push rod is used, the rotation speed of the motor is controlled to slow down the extension or retraction speed of the telescopic rod, which facilitates the grinding process.

[0029] In the embodiment, the third linear translation driving mechanism comprises a third long-shaped frame 41, a first motor 44, a ball screw 43 and a third linear guide rail 42 arranged along the length direction of the third long-shaped frame 41. The third long-shaped frame 41 is fixed to the base 1, the first motor 44, the ball screw 43 and the second linear guide rail 32 are all mounted on the third long-shaped frame 41, a third movable seat is mounted on the ball block of the ball screw 43, the slider of the third linear guide rail 42 is connected with the third movable seat, each rotary driving device 45 is mounted on the third movable seat, and the rotating shaft of the first motor 44 is connected with one end of the ball screw 43. The first motor 44 drives the ball screw 43 to rotate to make the ball block translate, so as to drive the three rotary driving devices 45 to synchronously reciprocate along the length direction of the third long-shaped frame 41.

[0030] In the embodiment, each rotary driving device 45 comprises a second motor 451, a shaft seat 452 and a shaft coupling 453. The shaft coupling 453 is arranged in the cavity of the shaft seat 452, the rotating shaft of the second motor 451 is connected with one end of the shaft coupling 453, and the other end of the shaft coupling 453 of each rotary driving device 45 respectively passes through the corresponding shaft seat 452 and is connected with the connecting segment 462 of the plurality of grinding heads 46. The second motor 451 drives the grinding head 46 to rotate through the shaft coupling 453.

[0031] The grinding process of the automatic grinding platform described in the embodiment is as follows:

[0032] The first and third linear translation driving mechanisms drive the three grinding heads 46 to move towards the second linear displacement platform 3 simultaneously, so that the three grinding heads 46 are coaxially arranged with the respective feeding cavities 351, and then the feeding block 35 moves towards the third displacement linear displacement platform, so that the threaded grinding sections 461 of the three grinding heads 46 are respectively inserted into the respective feeding cavities 351. At this time, the grinding type is coarse grinding, the electromagnetic valve in the feeding cavity 351 coated with coarse grinding abrasive is controlled to be powered on to make the injection port 352 spray the corresponding coarse grinding abrasive. During the grinding abrasive spraying process, the grinding head 46 is driven to rotate by the rotary driving device 45, so that the grinding abrasive can be uniformly coated. Then, the coarse grinding screw rod with the abrasive adhered is displaced to be coaxially arranged with the lead screw nut 5 clamped in the clamped cavity. Then, the first linear translation driving mechanism drives the lead screw nut 5 to translate towards the coarse grinding screw rod, so that the threaded grinding section 461 of the coarse grinding screw rod is threadedly engaged into the lead screw nut 5 to perform coarse grinding process. After coarse grinding is completed, the threaded grinding section 461 of the coarse grinding screw rod is withdrawn from the lead screw nut 5. The grinding liquid for coarse grinding is in a semi-fluid state.

[0033] The second and third linear translation driving mechanisms drive the three grinding heads 46 to move towards the second linear displacement platform 3 simultaneously, so that the three grinding heads 46 are coaxially arranged with the respective feeding cavities 351, and then the feeding block 35 moves towards the third displacement linear displacement platform, so that the threaded grinding sections 461 of the three grinding heads 46 are respectively inserted into the respective feeding cavities 351. At this time, the grinding type is semi-fine grinding, the electromagnetic valve in the feeding cavity 351 coated with semi-fine grinding abrasive is controlled to be powered on to make the injection port 352 spray the corresponding semi-fine grinding abrasive. During the grinding abrasive spraying process, the grinding head 46 is driven to rotate by the rotary driving device 45, so that the grinding abrasive can be uniformly coated. Then, the semi-fine grinding screw rod with the abrasive adhered is displaced to be coaxially arranged with the lead screw nut 5 clamped in the clamped cavity. Then, the first linear translation driving mechanism drives the lead screw nut 5 to translate towards the semi-fine grinding screw rod, so that the threaded grinding section 461 of the semi-fine grinding screw rod is threadedly engaged into the lead screw nut 5 to perform semi-fine grinding process. After semi-fine grinding is completed, the threaded grinding section 461 of the semi-fine grinding screw rod is withdrawn from the lead screw nut 5. The grinding liquid for semi-fine grinding is in a semi-fluid state.

[0034] Third, the third linear translation drive mechanism drives the three grinding head 46 to move to the second linear displacement platform 3 at the same time, so that the three grinding head 46 is coaxially arranged with each feeding cavity 351 respectively, and then the feeding block 35 moves to the third displacement linear displacement platform direction, so that the threaded grinding section 461 of the three grinding head 46 is inserted into each feeding cavity 351 respectively. At this time, the grinding type is fine grinding mode, the electromagnetic valve in the feeding cavity 351 coated with fine grinding abrasive is energized to be turned on, so that the injection port 352 sprays the corresponding fine grinding abrasive. In the process of grinding material spraying, the grinding head 46 is driven to rotate by the rotary drive device 45, so that the grinding material can be uniformly coated, and then the fine grinding screw rod adhered with the grinding material is displaced to be coaxially arranged with the lead screw nut 5 clamped in the clamping cavity. Then the first linear translation drive mechanism drives the lead screw nut 5 to translate to the coarse grinding screw rod direction, so that the threaded grinding section 461 of the fine grinding screw rod is screwedly matched into the lead screw nut 5 to perform fine grinding process. After fine grinding is completed, the threaded grinding section 461 of the fine grinding screw rod is withdrawn from the lead screw nut 5. The grinding liquid for fine grinding is in a near fluid state.

Claims

1. An automatic grinding platform, characterized in that, It includes a base (1), and a first linear displacement platform (2), a second linear displacement platform (3) and a third linear displacement platform (4) installed on the base (1). The first linear displacement platform (2) and the second linear displacement platform (3) are arranged parallel to each other and both are arranged perpendicular to the third linear displacement platform (4). The first linear displacement platform (2) includes a first linear translation drive mechanism and a workpiece clamp (25), wherein the workpiece clamp (25) is mounted on the translation part of the first linear translation drive mechanism; The second linear displacement platform (3) includes a second linear translation drive mechanism and a feeding mechanism. The feeding component is installed on the translation part of the second linear translation drive mechanism. The feeding mechanism includes a plurality of feeding chambers (351) and injection ports (352) located in each feeding chamber (351). The third linear displacement platform (4) includes a third linear translation drive mechanism and a grinding assembly. The grinding assembly includes multiple grinding heads (46) and multiple rotary drive devices (45). Each rotary drive device (45) is mounted on the translation part of the second linear translation drive mechanism. Each grinding head (46) is mounted on the rotation part of the multiple rotary drive devices (45). The center distance between the multiple grinding heads (46) is equal to the center distance between each feeding chamber (351).

2. The automatic grinding platform according to claim 1, characterized in that, The first linear translation drive mechanism includes a first elongated frame (21), a first telescopic device (23) and a first linear guide rail (22) arranged along the length of the first elongated frame (21). The first elongated frame (21) is fixed on the base (1). The first telescopic device (23) and the first linear guide rail (22) are both mounted on the first elongated frame (21). The telescopic part of the first telescopic device (23) and the slider of the first linear guide rail (22) are respectively connected to the workpiece fixture (25).

3. The automatic grinding platform according to claim 2, characterized in that, The workpiece fixture (25) includes a first movable seat (24), a first clamping body (251), and a second clamping body (252). The telescopic part of the first telescopic device (23) and the slider of the first linear guide rail (22) are both connected to the first movable seat (24). The first clamping body (251) and the second clamping body (252) are provided with clamping grooves (253) on opposite sides. The first clamping body (251) and the second clamping body (252) are symmetrically arranged and connected to each other through a detachable structure so that the clamping grooves (253) of the first clamping body (251) and the clamping grooves (253) of the second clamping body (252) are symmetrically arranged and spliced ​​to form a clamping cavity. The first clamping body (251) is installed on the first movable seat (24).

4. The automatic grinding platform according to claim 1, characterized in that, The second linear translation drive mechanism includes a second elongated frame (31), a second telescopic device (33) and a second linear guide rail (32) arranged along the length of the second elongated frame (31). The second elongated frame (31) is fixed on the base (1). The second telescopic device (33) and the second linear guide rail (32) are both mounted on the second elongated frame (31). The telescopic part of the second telescopic device (33) and the slider of the second linear guide rail (32) are respectively connected to the feeding mechanism.

5. The automatic grinding platform according to claim 4, characterized in that, The feeding mechanism includes a second movable seat (34) and a feeding block (35) mounted on the second movable seat (34). The telescopic part of the second telescopic device (33) and the slider of the second linear guide rail (32) are both connected to the second movable seat (34). Each feeding chamber (351) is set on the feeding block (35). Each feeding chamber (351) has an injection port (352) equipped with a solenoid valve or connected to a solenoid valve through a pipeline.

6. The automatic grinding platform according to claim 1, characterized in that, The third linear translation drive mechanism includes a third elongated frame (41), a first motor (44), a ball screw (43) and a third linear guide (42) arranged along the length of the third elongated frame (41). The third elongated frame (41) is fixed on the base (1). The first motor (44), the ball screw (43) and the second linear guide (32) are all mounted on the third elongated frame (41). A third movable seat is mounted on the ball slider of the ball screw (43). The slider of the third linear guide (42) is connected to the third movable seat. Each rotary drive device (45) is mounted on the third movable seat. The rotating shaft of the first motor (44) is connected to one end of the ball screw (43).

7. The automatic grinding platform according to claim 6, characterized in that, Each of the rotary drive devices (45) includes a second motor (451), a bearing seat (452), and a coupling (453). The coupling (453) is disposed in the cavity of the bearing seat (452). The rotating shaft of the second motor (451) is connected to one end of the coupling (453). The other end of the coupling (453) of each of the rotary drive devices (45) passes through the corresponding bearing seat (452) and is connected to a plurality of grinding heads (46).

8. The automatic grinding platform according to any one of claims 1-7, characterized in that, The number of grinding heads (46), rotary drive devices (45) and feeding chambers (351) are all three, and the three grinding heads (46) are respectively a coarse grinding screw, a semi-fine grinding screw and a fine grinding screw.

9. The automatic grinding platform according to claim 8, characterized in that, The roughing screw, semi-finishing screw and finishing screw are all composed of a thread grinding section (461) and a connecting section (462).

10. The automatic grinding platform according to claim 9, characterized in that, The axes of each thread grinding section (461) are located on the same horizontal plane.

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