Precise positioning indexing table

Abstract

The utility model discloses a fine positioning indexing table, and belongs to the technical field of machining. According to the structure, a motor base is fixedly connected to an equipment frame, a speed reducer is fixedly connected to the motor base, a servo motor is in transmission connection with the input end of the speed reducer, a gear is fixedly connected to the output end of the speed reducer, a bearing is fixedly connected to the equipment frame, a workbench is rotationally connected to the bearing, and a gear ring is fixedly connected to the workbench. An air cylinder is fixedly connected to the motor base or the equipment frame, a plug pin is connected to the free end of the air cylinder, a plurality of pin sleeves are fixedly connected to the workbench in the circumferential direction, and the plug pin and the pin sleeves are matched with each other through guide slopes. The gear and the gear ring are used for coarse positioning, then the pin shaft is used for fine positioning, after the pin shaft is abraded, only the pin shaft needs to be replaced, and the use cost is low. The utility model has the advantages of simple structure, accurate and reliable positioning, good stability, independent installation and strong applicability.

Description

Technical Field

[0001] The utility model belongs to the technical field of machining, and particularly relates to a precise positioning indexing workbench. Background Art

[0002] An indexing fixture is a fixture used to fix a workpiece and drive the workpiece to rotate. The most common application scenario of the indexing fixture is in the field of mechanical manufacturing. During the machining process, it is often necessary to rotate the workpiece along different axes for machining. For example, when machining a circular or hexagonal workpiece on a lathe, it is necessary to rotate the workpiece by a certain angle through the indexing fixture for machining to achieve the desired effect. In addition, the indexing fixture is also widely used in industries such as numerical control machine tools, cutting machining, and benchwork machining, improving the machining efficiency and product quality. In the prior art, although there are many optional types of indexing fixtures, most of them use a cam mechanism for indexing. The price of the cam machine is relatively high, and after long-term use, when the cam wears, the entire cam machine needs to be replaced. Summary of the Invention

[0003] The first technical problem to be solved by the utility model is that the conventional indexing fixture uses a cam mechanism for indexing, the price of its cam machine is relatively high, and when the cam wears, only the entire cam machine can be replaced, thus bringing a relatively high use cost.

[0004] The second technical problem to be solved by the utility model is that when other indexing mechanisms are used to reduce costs, how to fully ensure the positioning accuracy and stability.

[0005] To achieve the above technical purposes, the utility model adopts the following technical solutions:

[0006] A precise positioning indexing workbench, comprising a servo motor, a reducer, a gear, a bearing, a workbench, a plug pin, a cylinder, a gear ring, a motor base, an equipment frame, a pin sleeve, a convex head, a groove body, and a guiding inclined surface. Among them, a motor base is fixedly connected to the equipment frame, a reducer is fixedly connected to the motor base, the servo motor is drivingly connected to the input end of the reducer, a gear is fixedly connected to the output end of the reducer, a bearing is fixedly connected to the equipment frame, the workbench is rotatably connected to the bearing, a gear ring is fixedly connected to the workbench, the gear ring is meshed with the gear for transmission, a cylinder is fixedly connected to the motor base or the equipment frame, a plug pin is connected to the free end of the cylinder, a plurality of pin sleeves are fixedly connected to the workbench along the circumferential direction, a convex head is provided on the pin sleeve, a groove body is provided on the plug pin, the groove body and the convex head cooperate with each other, and a guiding inclined surface is provided at the end of the convex head or the end of the groove body.

[0007] Preferably, the reducer is a planetary reducer.

[0008] Preferably, the number of pin sleeves is 8, and the 8 pin sleeves are evenly distributed in the circumferential direction.

[0009] Preferably, the pin sleeve is located on the bottom surface of the workbench, the latch pin is located below the pin sleeve, the movement stroke of the cylinder is vertical, the protrusion is located at the bottom end of the pin sleeve, and the groove body is located at the top end of the latch pin.

[0010] In addition to the above structures, the present invention may also include a peripheral protection part and an electrical control part when actually selected. These parts may be implemented according to the general technical knowledge in the field, and are hereby explained.

[0011] The utility model provides a precision positioning indexing workbench. The technical solution is fixed on the main frame of the equipment through a pair of tapered roller bearings to ensure the axial and radial runout of the workbench within the use range. A servo motor is used to drive the rotary workbench to rotate through a gear ring, and stops when it rotates to the corresponding position. In order to overcome the problem of inaccurate positioning caused by gear clearance in this action mode, 8 positioning pin sleeves are evenly installed on the workbench of the utility model, and a cylinder is installed on the main frame. The cylinder drives a pin to move up and down. When it rotates to the corresponding position, the cylinder is actuated, and the taper pin is inserted into the pin sleeve to achieve precise positioning. When the equipment fails, the pin cannot be inserted into the pin sleeve, and a detection switch can be used to alarm accordingly.

[0012] The utility model discloses a precision positioning indexing workbench. The technical solution adopts a gear ring for rough positioning, and then uses a pin shaft for precision positioning. When the pin shaft is worn, it only needs to be replaced, and the use cost is low. The utility model has a simple structure, accurate and reliable positioning, good stability, independent installation, and strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the front view of the utility model;

[0014] Figure 2 It is a bottom view of the utility model;

[0015] Figure 3 It is a top view of the utility model;

[0016] Figure 4 It is a cross-sectional view of the utility model;

[0017] Figure 5 It is a partial cross-sectional view of the utility model;

[0018] Figure 6 yes Figure 5 A partial enlarged view of the middle A;

[0019] Figure 7 It is a three-dimensional diagram of the utility model in a cut-away state;

[0020] Figure 8 It is a three-dimensional diagram of the utility model;

[0021] In the figure:

[0022] 1. Servo motor 2. Reducer 3. Gear 4. Bearing 5. Workbench 6. Plug 7. Cylinder 8. Ring gear 9. Motor base 10. Equipment frame 11. Pin sleeve 12. Convex head 13. Tank 14. Guide inclined plane. Detailed implementation manners

[0023] The following will describe in detail the detailed implementation manners of the present utility model. In order to avoid excessive unnecessary details, the well-known structures or functions will not be described in detail in the following embodiments. The approximate language used in the following embodiments can be used for quantitative expressions, indicating that certain changes in quantity are allowed without changing the basic functions. Unless otherwise defined, the technical and scientific terms used in the following embodiments have the same meanings as those commonly understood by those skilled in the art to which the present utility model belongs.

[0024] Embodiment 1

[0025] A precision positioning indexing table, as Figures 1 to 6 shown, includes a servo motor 1, a speed reducer 2, a gear 3, a bearing 4, a worktable 5, a pin 6, a cylinder 7, a gear ring 8, a motor base 9, an equipment frame 10, a pin sleeve 11, a convex head 12, a groove body 13, and a guiding inclined surface 14. Among them, a motor base 9 is fixedly connected to the equipment frame 10, a speed reducer 2 is fixedly connected to the motor base 9, the servo motor 1 is drivingly connected to the input end of the speed reducer 2, a gear 3 is fixedly connected to the output end of the speed reducer 2, a bearing 4 is fixedly connected to the equipment frame 10, the worktable 5 is rotatably connected to the bearing 4, a gear ring 8 is fixedly connected to the worktable 5, the gear ring 8 is meshed and driven with the gear 3, a cylinder 7 is fixedly connected to the motor base 9 or the equipment frame 10, a pin 6 is connected to the free end of the cylinder 7, a plurality of pin sleeves 11 are fixedly connected to the worktable 5 in the circumferential direction, a convex head 12 is provided on the pin sleeve 11, a groove body 13 is provided on the pin 6, the groove body 13 cooperates with the convex head 12, and a guiding inclined surface 14 is provided at the end of the convex head 12 or the end of the groove body 13. Among them, the speed reducer 2 is a planetary speed reducer. The number of the pin sleeves 11 is 8, and the 8 pin sleeves 11 are evenly distributed in the circumferential direction. The pin sleeves 11 are located on the bottom surface of the worktable 5, the pin 6 is located below the pin sleeves 11, the movement stroke of the cylinder 7 is vertical, the convex head 12 is located at the bottom end of the pin sleeve 11, and the groove body 13 is located at the top end of the pin 6.

[0026] Embodiment 2

[0027] A precision positioning indexing table, as Figures 1 to 6As shown in the figure, the servo motor 1 is fixed on the motor base 9 through the speed reducer 2. The clearance between the gear 3 and the gear ring 8 can be adjusted by adjusting the motor base 9 to achieve a proper clearance. The cylinder 7 is installed on the motor base 9, and the bolt pin 6 is installed on the cylinder 7. The workbench 5 is installed on the main body frame 10 of the equipment through the bearing 4, and the gear ring 8 is installed on the workbench 5 through the rabbet positioning. The pin sleeve 11 with outer diameter positioning is installed on the workbench 5. As a wearing part, it has a low cost and is simple to replace. In this equipment, the servo motor 1 drives the gear 3 to rotate through the speed reducer 2, so that the workbench 5 rotates a certain angle and then stops. The cylinder 7 moves upward, and the bolt pin 6 with a taper is inserted into the pin sleeve 11 on the workbench 5. After the detection signal detects the in-place state, an instruction is sent to the upper computer to perform production operations. After the operations are completed, the cylinder 7 moves downward, and the bolt pin 6 is withdrawn. The servo motor 1 rotates to drive the workbench 5 to turn to the next working station, thus realizing repetitive operation activities. It is simple to debug and convenient to use.

[0028] The utility model accurately positions through a bolt pin (also known as a positioning pin) and ensures the stability of the operation process. It adopts a gear and gear ring reduction structure, with small impact during rotation and stable operation. The overall independent structure can be used for various operations.

[0029] As an 8-station precise positioning indexing workbench, the utility model can be used for automatically changing parts and realizing continuous processing of parts, with a very wide range of applications. The utility model has a simple structure, is convenient for installation and debugging, and has reliable performance. There are mounting and fixing holes on the workbench, which can be used for clamping parts or fixing pneumatic and hydraulic fixtures, etc.

[0030] The utility model has low requirements for working conditions and can adapt to harsh working environments, especially suitable for automatic welding operations. The wearing parts of the utility model are simple to replace, and the overall use cost of the machine is low.

[0031] The above has described the embodiments of the utility model in detail, but the described content is only the preferred embodiments of the utility model and is not intended to limit the utility model. Any modifications, equivalent replacements, and improvements made within the scope of the application of the utility model shall be included within the protection scope of the utility model.

Claims

1. A precision positioning indexing workbench, characterized in that: The invention comprises a servo motor (1), a reducer (2), a gear (3), a bearing (4), a workbench (5), a latch (6), a cylinder (7), a gear ring (8), a motor seat (9), an equipment frame (10), a pin sleeve (11), a protruding head (12), a groove body (13), and a guide inclined surface (14), wherein the motor seat (9) is fixedly connected to the equipment frame (10), the reducer (2) is fixedly connected to the motor seat (9), the servo motor (1) is drivingly connected to the input end of the reducer (2), the gear (3) is fixedly connected to the output end of the reducer (2), and the bearing (4) is fixedly connected to the equipment frame (10). The workbench (5) is rotatably connected to the bearing (4), a gear ring (8) is fixedly connected to the workbench (5), the gear ring (8) meshes with the gear (3) for transmission, a cylinder (7) is fixedly connected to the motor base (9) or the equipment frame (10), a latch (6) is connected to the free end of the cylinder (7), a plurality of pin sleeves (11) are fixedly connected to the workbench (5) along the circumferential direction, the pin sleeve (11) is provided with a convex head (12), the latch (6) is provided with a groove body (13), the groove body (13) and the convex head (12) cooperate with each other, and a guide inclined surface (14) is provided at the end of the convex head (12) or the end of the groove body (13).

2. A precise positioning and indexing workbench according to claim 1, characterized in that: The reducer (2) is a planetary reducer.

3. A precise positioning and indexing workbench according to claim 1, characterized in that: The number of the pin sleeves (11) is 8, and the 8 pin sleeves (11) are evenly spaced in the circumferential direction.

4. A precise positioning and indexing workbench according to claim 1, characterized in that: The pin sleeve (11) is located on the bottom surface of the workbench (5), the latch pin (6) is located below the pin sleeve (11), the movement stroke of the cylinder (7) is vertical, the convex head (12) is located at the bottom end of the pin sleeve (11), and the groove body (13) is located at the top end of the latch pin (6).

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