Centering displacement device for revolving body workpiece

Abstract

The utility model relates to the technical field of positioning tools for machining, in particular to a centering displacement device for a rotary body workpiece. The centering displacement device comprises a displacement mechanism, wherein a rotatable flange plate is arranged at the top end of the displacement mechanism; the centering and positioning mechanism is fixed on the upper surface of the flange plate and is symmetrically distributed relative to the rotation axis of the flange plate; wherein the centering and positioning mechanism is provided with a clamping device and a positioning tool, and at least a clamp of the clamping device overhangs above the positioning tool and is used for holding and clamping a rotary body workpiece placed on the upper surface of the positioning tool. According to the utility model, the centering and positioning mechanism can coincide the central axis of the rotary body workpiece with the symmetric axis of the displacement mechanism, and the displacement mechanism can automatically rotate the rotary body workpiece to align the reference position, so that the step of manually confirming the direction and the angle during manual feeding is replaced, and the deviation caused by human factors is avoided; the feeding efficiency is improved, and the positioning precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of positioning tooling technology in machining, and in particular to a centering and displacement device for rotating workpieces. Background Technology

[0002] In machining processes, the workpiece needs to be positioned and clamped first. Therefore, the positioning device affects both the positioning accuracy of the workpiece during subsequent machining processes and the dimensional and positional tolerances of the finished product. Current technology primarily uses positioners in conjunction with fixed fixtures to achieve automatic positioning of the workpiece.

[0003] However, due to the precise fit between the fixed fixture and the workpiece, it is only suitable for situations where robots are used for loading and unloading. Currently, manual loading and unloading of workpieces still relies on hoisting, which leads to significant placement errors and makes it impossible to accurately position the workpiece on the positioning fixture. Especially in valve body components, for rotating workpieces, the orientation and angle of the workpiece must be confirmed, further extending the time for loading and positioning. Moreover, manual confirmation of the orientation and angle of the workpiece can result in significant deviations, leading to a decrease in the accuracy of the finished product's form and position tolerances, which greatly limits production efficiency and product quality. Utility Model Content

[0004] This utility model aims to solve at least one of the technical problems existing in related technologies. To this end, this utility model proposes a centering and positioning device for rotating workpieces. The positioning mechanism can easily align the workpiece to the reference position, eliminating the need for manual confirmation and solving the problems of low efficiency and poor positioning accuracy of manual loading.

[0005] This utility model provides a centering and displacement device for a rotating workpiece. The centering and displacement device includes a displacement mechanism with a rotatable flange plate at its top.

[0006] A centering and positioning mechanism is fixed to the upper surface of the flange plate and is symmetrically distributed relative to the rotation axis of the flange plate;

[0007] The centering and positioning mechanism includes a clamp and a positioning fixture. At least the clamp of the clamp extends above the positioning fixture and is used to hold a rotating workpiece placed on the upper surface of the positioning fixture.

[0008] According to the present invention, a centering and positioning device for a rotating workpiece is provided, wherein the positioning fixture is arranged with its lower surface parallel to the surface of the flange plate and is fixed to the flange plate at intervals.

[0009] The clamp passes through the gap between the positioning fixture and the flange plate and is fixedly connected to the flange plate. The fixture extends from the end of the clamp protruding from the positioning fixture to above the positioning fixture.

[0010] According to the present invention, a centering and positioning device for a rotating workpiece is provided. The centering and positioning mechanism further includes floating components for centering. Four floating components are evenly distributed at the top corners of the flange plate. The lower end of the floating component is connected to the flange plate, and the upper end of the floating component is connected to the positioning fixture.

[0011] According to the present invention, a centering and displacement device for a rotating workpiece is provided, wherein the displacement mechanism includes:

[0012] Seat plates are arranged parallel to each other below the flange plate;

[0013] A rotating assembly, the upper end of which is connected to the flange plate, and the lower end of which is connected to the base plate.

[0014] According to the present invention, a centering and positioning device for a rotating workpiece is provided, wherein the rotating component is configured as an annular structure having an inner ring and an outer ring, the outer ring being rotatably fitted on the outer circumferential surface of the inner ring, the lower end face of the inner ring being connected to the seat plate, and the upper end face of the outer ring being connected to the flange plate.

[0015] According to the present invention, a centering and positioning device for a rotating workpiece is provided, wherein the rotating assembly further includes a drive gear disposed on the base plate, the outer circumferential surface of the outer ring is provided with teeth, and the drive gear is connected to the outer ring in a transmission manner.

[0016] According to the present invention, a centering and displacement device for a rotating workpiece is provided, wherein the clamp is provided with a linkage component for synchronizing the movement of several clamps.

[0017] The linkage assembly includes at least one adapter gear and two racks symmetrically arranged relative to the adapter gear and drivingly connected to the adapter gear; the central axis of the adapter gear coincides with the axis of symmetry of the clamp, and the racks are connected to the clamps in a one-to-one correspondence.

[0018] According to the present invention, a centering and positioning device for a rotating workpiece is provided, wherein an assembly hole is provided in the middle of the flange plate, and a protrusion for assembly and positioning is provided on the lower surface of the clamp. When the clamp is fixed to the flange plate, the protrusion is inserted into the assembly hole.

[0019] According to the present invention, a centering and positioning device for a rotating workpiece is provided, wherein the clamp is provided with a roller, and the outer circumference of the roller protrudes from the clamp at the position of the axis of symmetry of the clamp.

[0020] According to the present invention, a centering and positioning device for a rotating workpiece is provided, wherein the positioning fixture includes a base and a positioning strip mounted on the base;

[0021] The positioning strip is arc-shaped, and several positioning strips are evenly distributed along a circumference that coincides with the arc.

[0022] The above-mentioned one or more technical solutions of this utility model have at least one of the following technical effects: the centering and positioning mechanism can set the central axis of the rotating workpiece to coincide with the symmetry axis of the displacement mechanism. The displacement mechanism can automatically rotate and align the reference position of the rotating workpiece, replacing the step of manually confirming the direction and angle of the rotating workpiece during manual loading, thereby avoiding deviations caused by human factors, improving both loading efficiency and positioning accuracy.

[0023] In addition to the technical problems solved by this utility model, the technical features of the technical solutions constituted by this utility model, and the advantages brought about by these technical features, as described above, other technical features of this utility model and the advantages brought about by these technical features will be further explained in conjunction with the accompanying drawings, or can be learned through the practice of this utility model. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A three-dimensional structural diagram of the centering and displacement device provided in the embodiment of this utility model.

[0026] Figure 2 A three-dimensional structural diagram of the centering and displacement device without clamps provided in an embodiment of this utility model.

[0027] Figure 3 This is a three-dimensional structural diagram of a clamp provided for an embodiment of the present utility model.

[0028] Figure 4 A three-dimensional structural schematic diagram of another clamp provided in an embodiment of this utility model.

[0029] Figure label:

[0030] 100. Positioning mechanism; 110. Flange plate; 120. Seat plate; 130. Rotating assembly; 131. Inner ring; 132. Outer ring; 133. Drive gear; 200. Centering and positioning mechanism; 210. Positioning fixture; 211. Base; 212. Positioning strip; 213. Gasket; 220. Clamp; 221. Protrusion; 222. Guide rail; 223. Cylinder; 224. Fixture; 225. Roller; 230. Linkage assembly; 231. Adapter gear; 232. Rack; 233. Connecting block; 240. Floating assembly. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0034] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0036] In existing technologies, the first step in machining a workpiece is to position and clamp it. The positioning device affects both the positioning accuracy of the workpiece during subsequent machining processes and the dimensional and positional tolerances of the finished product. Due to the large weight of the workpiece, workers typically use hoisting methods to load and unload it.

[0037] Among the valve body components, especially rotating parts such as the valve core and valve seat, the requirements for concentricity and roundness are high. Before processing, it is necessary to confirm the direction and angle of the workpiece, which further prolongs the time for loading and positioning the workpiece. Moreover, manual confirmation of the direction and angle of the workpiece can have significant deviations, leading to a decrease in the accuracy of the finished product's form and position tolerances, which greatly limits production efficiency and product quality.

[0038] To address the above problems, this utility model provides a centering and positioning device for rotating workpieces. The centering and positioning device includes a positioning mechanism 100 and a centering and positioning mechanism 200.

[0039] Specifically, such as Figures 1 to 4As shown, the displacement mechanism 100 includes a flange plate 110, a seat plate 120, a rotating assembly 130, and a support mounted on the lower surface of the seat plate 120. The flange plate 110 and the seat plate 120 are arranged parallel to each other and connected by the rotating assembly 130. The flange plate 110 is located above the seat plate 120 and is rotatable relative to the seat plate 120.

[0040] Furthermore, the flange plate 110 and the seat plate 120 are arranged to coincide with the central axis. The flange plate 110 is located at the top of the displacement mechanism 100. The centering and positioning mechanism 200 is fixed to the upper surface of the flange plate 110. Moreover, the centering and positioning mechanism 200 is symmetrically distributed with respect to the rotation axis of the flange plate 110.

[0041] Furthermore, the centering and positioning mechanism 200 is provided with a clamp 220 and a positioning fixture 210. At least the clamp 224 of the clamp 220 extends above the positioning fixture 210 and is used to clamp a rotating workpiece placed on the upper surface of the positioning fixture 210.

[0042] In this embodiment, the centering and positioning mechanism 200 can set the central axis of the rotating workpiece to coincide with the axis of symmetry of the displacement mechanism 100. The displacement mechanism 100 can automatically rotate and align the reference position of the rotating workpiece, replacing the step of manually confirming the direction and angle of the rotating workpiece during manual loading. This avoids deviations caused by human factors, improving both loading efficiency and positioning accuracy.

[0043] Based on the above embodiments, another embodiment of this utility model introduces a centering and displacement device for a rotating workpiece.

[0044] like Figure 1 As shown, the positioning fixture 210 includes a base 211 and a positioning strip 212. The base 211 is a square flat plate. The positioning strip 212 is an arc shape. The positioning fixture 210 is arranged with its lower surface parallel to the surface of the flange plate 110.

[0045] Specifically, the base 211 of the positioning fixture 210 is parallel to the flange plate 110. Furthermore, the base 211 is fixed to the flange plate 110 at intervals.

[0046] like Figure 3 and Figure 4 As shown, the clamp 220 includes two grippers 224 that can move synchronously toward or away from each other.

[0047] The clamp 220 passes through the gap between the positioning fixture 210 and the flange plate 110. Furthermore, the clamp 220 is fixedly connected to the flange plate 110. The fixture 224 extends from the end of the clamp 220 protruding from the positioning fixture 210 to above the positioning fixture 210.

[0048] Based on the above embodiments, another embodiment of this utility model introduces a centering and displacement device for a rotating workpiece.

[0049] like Figure 2 As shown, the centering and positioning mechanism 200 further includes floating components 240 for centering. The flange plate 110 is square. Four floating components 240 are evenly distributed at the apex corners of the flange plate 110. The lower end of the floating component 240 is connected to the flange plate 110, and the upper end of the floating component 240 is connected to the positioning fixture 210.

[0050] The floating component 240 is controlled by a solenoid valve to switch between a floating state and a fixed state. For example, before the workpiece is placed on the positioning fixture 210, the clamps 224 of the clamp 220 are in the open position, and the positioning fixture 210 is fixed by the floating component 240, which can prevent relative movement between the workpiece and the positioning fixture 210 during hoisting. After the workpiece is placed on the positioning fixture 210, the floating component 240 is controlled to switch to the floating state, then the clamps 224 of the clamp 220 are controlled to close together to clamp the workpiece, and then the floating component 240 is controlled to switch from the floating state to the fixed state, thus completing the centering of the workpiece.

[0051] The intelligent camera takes pictures of the marker position for comparison, calculates the rotation angle, and finally controls the displacement mechanism 100 to drive the positioning fixture 210, clamp 220, floating component 240 and the workpiece to be processed to rotate together to the target angle, so as to achieve precise positioning of the workpiece.

[0052] Based on the above embodiments, another embodiment of the present invention introduces a simple displacement mechanism 100.

[0053] like Figure 2 As shown, the displacement mechanism 100 includes a base plate 120 and a rotating assembly 130.

[0054] Specifically, the seat plates 120 are arranged parallel to each other below the flange plate 110. The upper end of the rotating assembly 130 is connected to the flange plate 110, and the lower end of the rotating assembly 130 is connected to the seat plate 120.

[0055] Furthermore, the rotating assembly 130 is configured as an annular structure having an inner ring 131 and an outer ring 132. The outer ring 132 is rotatably fitted onto the outer circumferential surface of the inner ring 131. The lower end face of the inner ring 131 is connected to the seat plate 120. The upper end face of the outer ring 132 is connected to the flange plate 110.

[0056] Based on the above embodiments, another embodiment of the present invention introduces a displacement mechanism 100 capable of automatic rotation.

[0057] The rotating assembly 130 includes a drive gear 140 disposed on the base plate 120. The outer circumferential surface of the outer ring 132 is provided with teeth. The drive gear 140 is drively connected to the outer ring 132.

[0058] Furthermore, a motor is mounted on the base plate 120. The output shaft of the motor is fixed to the drive gear 140. The motor drives the drive gear 140 to rotate, thereby driving the outer ring 132 to rotate relative to the inner ring 131. In addition, a positioning pin is also provided on the base plate 120. The positioning pin is located below the base plate 120 and can move upward relative to the base plate 120 until the top of the positioning pin is embedded in the flange plate 110.

[0059] Based on the above embodiments, another embodiment of this utility model introduces a centering and displacement device for a rotating workpiece.

[0060] like Figure 3 As shown, the clamp 220 is provided with a linkage component 230 for causing the plurality of clamps 224 to move synchronously.

[0061] Specifically, the linkage component 230 includes at least one adapter gear 231 and two racks 232.

[0062] Two racks 232 are symmetrically arranged relative to the adapter gear 231. Furthermore, each rack 232 is drive-connected to the adapter gear 231. The central axis of the adapter gear 231 coincides with the axis of symmetry of the clamp 220. Each rack 232 is connected to a corresponding clamp 224.

[0063] Specifically, the linkage assembly 230 also includes a connecting block. The connecting block is located at the center of symmetry of the clamp 220. The connecting block is cubic and has a recessed groove extending downward from the top surface of the cube. The adapter gear 231 is rotatably mounted in the groove of the connecting block. The connecting block also has two horizontally oriented through holes through which a rack 232 slidably passes. The teeth of the rack 232 mesh with the adapter gear 231.

[0064] Based on the above embodiments, another embodiment of this utility model introduces a centering and displacement device for a rotating workpiece.

[0065] like Figure 3 and Figure 4 As shown, the clamp 220 also includes a guide rail 222 and a cylinder 223. Two clamps 224 are symmetrically distributed at both ends of the clamp 220. Each clamp 224 has a guide rail 222 at its bottom. The two clamps 224 are connected by a connecting assembly, allowing them to move synchronously relative to the center of symmetry of the clamp 220. The telescopic shaft of the cylinder 223 is fixedly connected to either clamp 224, and the two clamps 224 can be controlled to clamp and position the workpiece by controlling the telescopic shaft of the cylinder 223.

[0066] Furthermore, the clamp 224 is provided with a roller 225. The outer periphery of the roller 225 protrudes from the clamp 224 at a position opposite to the axis of symmetry of the clamp 220.

[0067] Specifically, the positioning fixture 210 includes a base 211, a pad 213, and a positioning strip 212 mounted on the base 211. The base 211 is a square flat plate. The pad 213 is made of soft materials such as leather or plastic.

[0068] The positioning strip 212 is arc-shaped. A plurality of positioning strips 212 are evenly spaced along a circumference coinciding with the arc. Preferably, a pad 213 is installed on the upper surface of the positioning strip 212. Along the radial direction of the circle containing the positioning strip 212, the height of the positioning strip 212 increases progressively from the center to the outer perimeter.

[0069] In this embodiment, a soft material and rollers 225 are added to the part of the centering and positioning device that comes into contact with the workpiece to prevent the workpiece from being scratched.

[0070] like Figure 2 As shown, an assembly hole penetrating the surface of the flange plate 110 is provided in the middle. The lower surface of the clamp 220 is provided with a protrusion 221 for assembly positioning. When the clamp 220 is fixed to the flange plate 110, the protrusion 221 is inserted into the assembly hole.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

[0072] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A centering and positioning device for a rotating workpiece, characterized in that, include: The displacement mechanism (100) has a rotatable flange plate (110) at its top. A centering and positioning mechanism (200) is fixed to the upper surface of the flange plate (110) and is symmetrically distributed relative to the rotation axis of the flange plate (110); The centering and positioning mechanism (200) is provided with a clamp (220) and a positioning fixture (210). At least the clamp (224) of the clamp (220) extends above the positioning fixture (210) for clamping a rotating workpiece placed on the upper surface of the positioning fixture (210).

2. The centering and positioning device for a rotating workpiece according to claim 1, characterized in that, The positioning fixture (210) is arranged with its lower surface parallel to the surface of the flange plate (110) and is fixed to the flange plate (110) at intervals; The clamp (220) passes through the gap between the positioning fixture (210) and the flange plate (110) and is fixedly connected to the flange plate (110). The clamp (224) extends from the end of the clamp (220) protruding from the positioning fixture (210) to above the positioning fixture (210).

3. The centering and positioning device for a rotating workpiece according to claim 1 or 2, characterized in that, The centering and positioning mechanism (200) further includes a floating component (240) for centering. Four floating components (240) are evenly distributed at the top corners of the flange plate (110). The lower end of the floating component (240) is connected to the flange plate (110), and the upper end of the floating component (240) is connected to the positioning fixture (210).

4. The centering and positioning device for a rotating workpiece according to claim 3, characterized in that, The displacement mechanism (100) includes: Seat plates (120) are arranged parallel to each other below the flange plate (110); A rotating assembly (130) is provided, the upper end of which is connected to the flange plate (110) and the lower end of which is connected to the seat plate (120).

5. The centering and positioning device for a rotating workpiece according to claim 4, characterized in that, The rotating assembly (130) is configured as an annular structure having an inner ring (131) and an outer ring (132). The outer ring (132) is rotatably fitted onto the outer circumferential surface of the inner ring (131). The lower end face of the inner ring (131) is connected to the seat plate (120), and the upper end face of the outer ring (132) is connected to the flange plate (110).

6. The centering and positioning device for a rotating workpiece according to claim 5, characterized in that, The rotating assembly (130) also includes a drive gear (133) disposed on the base plate (120), and the outer circumferential surface of the outer ring (132) is provided with teeth, and the drive gear (133) is connected to the outer ring (132) in a transmission connection.

7. The centering and positioning device for a rotating workpiece according to claim 3, characterized in that, The clamp (220) is equipped with a linkage component (230) for synchronizing the movement of the plurality of clamps (224); The linkage assembly (230) includes at least one adapter gear (231) and two racks (232) symmetrically arranged relative to the adapter gear (231) and drivingly connected to the adapter gear (231); the central axis of the adapter gear (231) coincides with the axis of symmetry of the clamp (220), and the racks (232) are connected to the clamp (224) in a one-to-one correspondence.

8. The centering and positioning device for a rotating workpiece according to claim 4, characterized in that, The flange plate (110) has an assembly hole that penetrates its surface in the middle. The lower surface of the clamp (220) is provided with a protrusion (221) for assembly positioning. When the clamp (220) is fixed to the flange plate (110), the protrusion (221) is inserted into the assembly hole.

9. The centering and positioning device for a rotating workpiece according to claim 8, characterized in that, The clamp (224) is provided with a roller (225), and the outer periphery of the roller (225) protrudes from the clamp (224) at the axis of symmetry of the clamp (220).

10. The centering and positioning device for a rotating workpiece according to claim 3, characterized in that, The positioning fixture (210) includes a base (211) and a positioning strip (212) mounted on the base (211). The positioning strip (212) is arc-shaped, and several positioning strips (212) are evenly distributed along a circumference that coincides with its arc.

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