Composite outer circle segment difference grinding machine

Abstract

The utility model belongs to the technical field of grinding machines, and relates to a composite outer circle segment difference grinding machine which comprises a grinding machine base, an isolated grinding area of a feeding area is arranged on the grinding machine base, and a mechanical arm for transferring workpieces and a plurality of material discs for containing the workpieces are arranged in the feeding area. The grinding area is provided with a clamp workbench sliding transversely, a first grinding tool workbench sliding longitudinally and a second grinding tool workbench sliding longitudinally, the clamp workbench is provided with a workpiece clamp, the first grinding tool workbench is provided with a first main shaft sleeved with a first grinding wheel, and the second grinding tool workbench is provided with a second main shaft sleeved with a second grinding wheel. The second grinding tool workbench is provided with a second main shaft sleeved with a second grinding wheel. The first grinding wheel and the second grinding wheel have different specifications, and the axes of the first grinding wheel and the second grinding wheel are distributed in different directions. The composite outer circle segment difference grinding machine has the advantages of being simple in structure, small in occupied space and stable and reliable in work.

Description

Technical Field

[0001] The utility model belongs to the technical field of grinding machines and relates to a compound external cylindrical step grinding machine. Background Art

[0002] A step grinding machine is a forming machine used for forming a stepped outer diameter of a workpiece. In order to improve the automation degree of the step grinding machine, it is generally used in cooperation with an automatic loading and unloading system. The automatic loading and unloading system is generally arranged on one side of the grinding machine and requires a large space. In order to save space, some step grinding machines integrate it into the grinding machine base. For example, Chinese Patent Application for Invention CN105150066A (Publication Date: December 16, 2015) discloses a step grinding machine, which includes a machine tool body, and a material tray, a working head assembly, a grinding wheel assembly, and a manipulator assembly all installed on the machine tool body. The manipulator assembly is located above the working head assembly and the grinding wheel assembly. The working head assembly includes a saddle, a base, a first guide rail, a first lead screw, a first servo motor, a pressing device, a working head slide plate, a second guide rail, a second lead screw, a second servo motor, a third servo motor, a spindle fixing seat, a working head spindle, and a workpiece clamping device. The base is fixed to the machine tool body. The first guide rail is fixed to the base along the transverse direction. The saddle is slidably matched with the first guide rail. The first servo motor is fixed to the base and is connected to the first lead screw. The first lead screw is in threaded cooperation with the saddle. The second guide rail is fixed to the saddle and is parallel to the first guide rail. The working head slide plate is slidably matched with the second guide rail.

[0003] When the above grinding machine is working, the dust and droplets generated by grinding will splash onto the automatic loading and unloading system, seriously affecting the work of precision components such as the manipulator assembly. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a compound external cylindrical step grinding machine, which has the advantages of simple structure, small occupied space, and stable and reliable work.

[0005] To solve the above technical problems, the purpose of the utility model is achieved through the following technical solutions:

[0006] A compound external cylindrical step grinding machine includes a grinding machine base. A feeding area and a grinding area are isolatedly arranged on the grinding machine base. A manipulator for transferring workpieces and a plurality of material trays for accommodating workpieces are arranged in the feeding area. A fixture workbench that slides transversely, a first grinding tool workbench that slides longitudinally, and a second grinding tool workbench that slides longitudinally are respectively arranged in the grinding area. A workpiece fixture is arranged on the fixture workbench. A first spindle sleeved with a first grinding wheel is arranged on the first grinding tool workbench. A second spindle sleeved with a second grinding wheel is arranged on the second grinding tool workbench. The first grinding wheel and the second grinding wheel have different specifications and their axes are distributed in different directions.

[0007] In the above-mentioned compound external cylindrical step grinder, the grinding areas are distributed in a T shape. The fixture workbench, the first grinding workbench, and the second grinding workbench are distributed left and right, the fixture workbench and the feeding area are distributed front and back, and the first grinding workbench and the second grinding workbench are distributed front and back.

[0008] In the above-mentioned compound external cylindrical step grinder, the feeding area and the grinding areas are separated by sheet metal into independent chambers, and through slots for the robotic arm to transfer workpieces are provided on the sheet metal.

[0009] In the above-mentioned compound external cylindrical step grinder, a rotatable turning plate is provided at the bottom of the robotic arm. The turning plate is driven by a turning cylinder to turn between a horizontal position and a vertical position. Claws driven by a claw cylinder are provided at the bottom of the turning plate. The turning cylinder can also be replaced by other rotary drive mechanisms, such as a connecting rod assembly driven by a reduction motor.

[0010] In the above-mentioned compound external cylindrical step grinder, a claw cylinder mounting seat is provided at the bottom of the turning plate. A claw cylinder is provided on each side of the claw cylinder mounting seat, and each claw cylinder is connected to a claw.

[0011] In the above-mentioned compound external cylindrical step grinder, the first grinding wheel is a fine grinding wheel, and the second grinding wheel is a rough grinding wheel.

[0012] In the above-mentioned compound external cylindrical step grinder, each workbench is driven by a linear motor or a motor screw assembly. Preferably, one or more of the fixture workbench, the first grinding workbench, and the second grinding workbench are driven by a linear motor.

[0013] In the above-mentioned compound external cylindrical step grinder, in the initial state, the axis of the first main shaft is distributed horizontally, and the axis of the second main shaft is distributed longitudinally.

[0014] In the above-mentioned compound external cylindrical step grinder, a transverse adjustment seat is provided on the first grinding workbench. The first main shaft is adjustably assembled on the transverse adjustment seat, and its transverse position is adjusted by an adjustment screw rod and an adjustment handle.

[0015] In the above-mentioned compound external cylindrical step grinder, an arc-shaped angle adjustment linear guide is provided on the second grinding workbench. The second main shaft is adjustably assembled in the angle adjustment linear guide.

[0016] Compared with the prior art, the present utility model has the following beneficial effects:

[0017] The utility model provides a compound external cylindrical step grinding machine, which integrates an automatic feeding mechanism onto the grinding machine base. By setting two isolated areas on the grinding machine base, one for setting the feeding mechanism and the other for setting the grinding mechanism, during the grinding process, the dust and droplets generated by grinding will not affect the operation of the feeding mechanism. Therefore, the utility model has the advantages of simple structure, small occupied space, and stable and reliable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a perspective view of the utility model;

[0019] Figure 2 is Figure 1 a partially enlarged view of;

[0020] Figure 3 is a top view of the utility model;

[0021] Reference numerals: 1, grinding machine base; 2, robotic arm; 3, material tray; 4, fixture workbench; 5, first grinding tool workbench; 6, second grinding tool workbench; 7, workpiece fixture; 8, first grinding wheel; 9, first main shaft; 10, second grinding wheel; 11, second main shaft; 12, turning plate; 13, turning cylinder; 14, jaw cylinder; 15, jaw; 16, jaw cylinder mounting seat; 17, lateral adjustment seat; 18, adjustment handle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following further describes the utility model with specific embodiments in conjunction with the drawings. Refer to Figures 1-3 :

[0023] A compound external cylindrical step grinding machine includes a grinding machine base 1. An isolated feeding area and a grinding area are provided on the grinding machine base 1. The feeding area is provided with a robotic arm 2 for transferring workpieces and a plurality of material trays 3 for accommodating workpieces. The grinding area is respectively provided with a fixture workbench 4 that slides horizontally, a first grinding tool workbench 5 and a second grinding tool workbench 6 that slide longitudinally. A workpiece fixture 7 is provided on the fixture workbench 4. A first main shaft 9 sleeved with a first grinding wheel 8 is provided on the first grinding tool workbench 5. A second main shaft 11 sleeved with a second grinding wheel 10 is provided on the second grinding tool workbench 6. The first grinding wheel 8 and the second grinding wheel 10 have different specifications and their axes are distributed in different directions.

[0024] During operation, the robotic arm 2 grips the workpiece to be processed in the tray 3, then transfers it to the workpiece fixture 7 and clamps it. After that, the fixture workbench 4 drives the workpiece to move to the processing station. The first grinding wheel workbench 5 drives the first spindle 9 to move to the processing station, and the second grinding wheel workbench 6 drives the second spindle 11 to move to the processing station. The workpiece fixture 7, the first spindle 9, and the second spindle 11 are started, and the first grinding wheel 8 and the second grinding wheel 10 simultaneously process the workpiece. After the processing is completed, the first grinding wheel workbench 5 and the second grinding wheel workbench 6 return to their original positions, and the robotic arm removes the processed workpiece and then returns it to the tray 3.

[0025] In contrast to the attached Figure 3 , in this embodiment, the layout of the grinding area in the feeding area is further optimized: the grinding area is distributed in a T shape. The fixture workbench 4 is distributed left and right with the first grinding wheel workbench 5 and the second grinding wheel workbench 6. The fixture workbench 4 is distributed front and back with the feeding area. The first grinding wheel workbench 5 is distributed front and back with the second grinding wheel workbench 6.

[0026] The specific isolation method in this embodiment is: the feeding area and the grinding area are isolated by sheet metal into independent compartments. In order to achieve the function of loading and unloading, a through groove for the robotic arm 2 to transfer the workpiece is provided on the sheet metal.

[0027] In order to make the loading and unloading smoother, a rotatable turning plate 12 is provided at the bottom of the robotic arm 2. The turning plate 12 is driven by a turning cylinder 13 to turn between a horizontal position and a vertical position. A clamping jaw 15 driven by a clamping jaw cylinder 14 is provided at the bottom of the turning plate 12. The clamping jaw cylinder 14 drives the clamping jaw 15 to clamp or loosen the workpiece. The turning cylinder 13 can also be replaced by other rotary drive mechanisms, such as a connecting rod assembly driven by a reduction motor. When it is necessary to take out or put in a workpiece from the tray 3, the turning cylinder 13 drives the clamping jaw cylinder 14 and the clamping jaw 15 to turn to the vertical position. When it is necessary to insert or pull out the workpiece from the workpiece fixture 7, the turning cylinder 13 drives the clamping jaw cylinder 14 and the clamping jaw 15 to turn to the horizontal position.

[0028] In order to improve the loading and unloading efficiency, a clamping jaw cylinder mounting seat 16 is provided at the bottom of the turning plate 12. A clamping jaw cylinder 14 is provided on each side of the clamping jaw cylinder mounting seat 16, and each clamping jaw cylinder 14 is connected to a clamping jaw 15. By providing two sets of clamping jaws 15, the workpiece can be taken out and put in simultaneously.

[0029] In this embodiment, the first grinding wheel 8 is a fine grinding wheel, and the second grinding wheel 10 is a rough grinding wheel.

[0030] In this embodiment, each workbench is driven by a linear motor or a motor screw assembly. Preferably, one or more of the fixture workbench 4, the first grinding wheel workbench 5, and the second grinding wheel workbench 6 are driven by a linear motor.

[0031] In the initial state, the axis of the first main shaft 9 is distributed transversely, and the axis of the second main shaft 11 is distributed longitudinally.

[0032] In order to adapt to workpieces of more specifications, the first main shaft 9 of this embodiment can be adjusted transversely, and the second main shaft 11 can be adjusted angularly. The specific adjustment structure is as follows:

[0033] A transverse adjustment base 17 is provided on the above-mentioned first grinding tool workbench 5. The first main shaft 9 is adjustably assembled on the transverse adjustment base 17, and its transverse position is adjusted by an adjustment screw rod (located inside the transverse adjustment base 17, not shown in the drawings) and an adjustment handle 18.

[0034] An arc-shaped angular adjustment linear guide (located below the second main shaft 11, not shown in the drawings) is provided on the above-mentioned second grinding tool workbench 6. The second main shaft 11 is adjustably assembled in the angular adjustment linear guide.

[0035] The above-mentioned embodiment is only a preferred embodiment of the present invention, and does not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A composite external cylindrical step-difference grinding machine, comprising a grinding machine base (1), characterized in that: The grinding machine base (1) is provided with an isolated feeding area and a grinding area, the feeding area is provided with a mechanical arm (2) for transferring workpieces and a plurality of material trays (3) for accommodating workpieces, the grinding area is respectively provided with a clamping table (4) for transverse sliding, a first grinding table (5) for longitudinal sliding and a second grinding table (6), the clamping table (4) is provided with a workpiece clamp (7), the first grinding table (5) is provided with a first spindle (9) for mounting a first grinding wheel (8), the second grinding table (6) is provided with a second spindle (11) for mounting a second grinding wheel (10), the first grinding wheel (8) and the second grinding wheel (10) have different specifications and their axes are distributed in different directions.

2. The compound external cylindrical step difference grinding machine according to claim 1, characterized in that: The grinding area is distributed in a T shape, the fixture worktable (4) and the first grinding tool worktable (5) and the second grinding tool worktable (6) are distributed left and right, the fixture worktable (4) and the feeding area are distributed front and back, and the first grinding tool worktable (5) and the second grinding tool worktable (6) are distributed front and back.

3. The compound external cylindrical step difference grinding machine according to claim 1, characterized in that: The feeding area and the grinding area are separated into independent warehouse bodies by sheet metal, and the sheet metal is provided with a through groove for the robot arm (2) to transfer the workpiece.

4. The compound external cylindrical step difference grinding machine according to claim 1, characterized in that: A rotatable flip plate (12) is arranged at the bottom of the mechanical arm (2), and the flip plate (12) is driven by a flip cylinder (13) to flip between a horizontal position and a vertical position. A clamping claw (15) driven by a clamping claw cylinder (14) is arranged at the bottom of the flip plate (12).

5. The compound external cylindrical step difference grinding machine according to claim 4, characterized in that: A clamping cylinder mounting seat (16) is provided at the bottom of the flip plate (12), a clamping cylinder (14) is provided on both sides of the clamping cylinder mounting seat (16), and each clamping cylinder (14) is connected to a clamping claw (15).

6. The compound external cylindrical step difference grinding machine according to claim 1, characterized in that: One or more of the fixture worktable (4), the first mold worktable (5), and the second mold worktable (6) are driven by a linear motor.

7. The compound external cylindrical step difference grinding machine according to claim 1, characterized in that: In an initial state, the axis of the first main shaft (9) is distributed in the transverse direction, and the axial direction of the second main shaft (11) is distributed in the longitudinal direction.

8. The compound external cylindrical step difference grinding machine according to claim 7, characterized in that: A transverse adjustment seat (17) is provided on the first mold workbench (5), and the first spindle (9) is adjustably mounted on the transverse adjustment seat (17), and its transverse position is adjusted by adjusting the screw rod and the adjusting handle (18).

9. The compound external cylindrical step difference grinding machine according to claim 7, characterized in that: The second mold workbench (6) is provided with an arc-shaped angle adjustment linear rail, and the second spindle (11) is adjustably mounted in the angle adjustment linear rail.

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