A center frame for full range sensing of a proximity switch

Abstract

The utility model relates to a center frame of proximity switch full range response, and aims at solving the problem that the center frame of old proximity switch can only detect and feedback response signal when the side arm is fully opened to the maximum stroke, and lacks workpiece angular positioning function. Its technical scheme points are: further include at least one proximity switch for sensing the degree of side arm opening, the proximity switch is movably connected with the shell; the linkage is fixedly connected with the middle arm, and the linkage is provided with a marker; the active track of the proximity switch and the marker is arranged in parallel, the proximity switch receives the response signal when the position of the proximity switch corresponds to the marker, the response range of the proximity switch is the maximum degree of side arm opening from closing to opening, through the integration of proximity switch full range response and angular positioning function, the problem that the center frame of old proximity switch can only detect and feedback response signal when the side arm is fully opened to the maximum stroke, and lacks workpiece angular positioning function is solved.

Description

Technical Field

[0001] This utility model relates to the field of machining, and in particular to a center frame for full-range sensing of a proximity switch. Background Technology

[0002] The center rest uses multiple arms to stably clamp the workpiece, ensuring the coaxiality and machining accuracy of the workpiece during the machining process. However, the induction control mechanism of the traditional center rest has limitations and cannot meet the requirements of precision machining for timely equipment response and operational flexibility.

[0003] In the old-style proximity switch center frame, there is no direct connection between the proximity switch and the synchronously moving center and side arms. The proximity switch can only detect and provide feedback signals when the side arms are fully extended to their maximum stroke. It cannot provide timely response throughout the entire range of the side arms' extension process. Therefore, the equipment cannot accurately control the opening range of the side arms according to processing requirements, which increases the difficulty of adjustment during operation. Improper opening range of the side arms may cause over-clamping of the workpiece, surface damage, or unstable clamping, thereby affecting processing efficiency. In addition, the existing center frame lacks the function of angular positioning of workpieces. Before processing, operators cannot adjust the angle of the workpiece and can only rely on manual rough alignment, which results in low accuracy of angular positioning of workpieces and may also cause quality problems such as deviation of processing dimensions. It often requires additional manpower to repeatedly correct, which reduces production efficiency and increases processing costs.

[0004] Therefore, a new technical solution is needed to address the problems existing in the current technology. Utility Model Content

[0005] The purpose of this invention is to provide a center frame for full-range sensing of a proximity switch, so as to solve the problem that the center frame of the old-style proximity switch in the prior art can only detect and feed back the sensing signal when the side arm is fully extended to the maximum stroke, and lacks the workpiece angular positioning function.

[0006] The technical solution of this utility model is: a central frame for full-range sensing of a proximity switch, comprising a housing and a middle arm and at least one side arm disposed on the housing, wherein the middle arm and the side arm move synchronously, and the central frame further comprises: At least one proximity switch is used to sense the extent of the side arm opening, the proximity switch being movably connected to the housing; A linkage rod is fixedly connected to the middle arm, and a marker is provided on the linkage rod; The proximity switch is arranged parallel to the movement trajectory of the marker. When the proximity switch corresponds to the position of the marker, it receives a sensing signal. The sensing range of the proximity switch is the maximum stroke of the side arm from closed to open.

[0007] Preferably, after the side arm opens, the middle arm drives the linkage to move, causing the marker to move along the movement trajectory. When the proximity switch moves to the position corresponding to the marker, it receives a sensing signal and detects the opening amplitude of the side arm through the sensing signal.

[0008] Preferably, the proximity switch is fixed at a position corresponding to the required opening range of the side arm on the movement trajectory. When the side arm moves to the corresponding range, the marker moves to a position corresponding to the proximity switch so that the proximity switch receives a sensing signal.

[0009] Preferably, it also includes an angular positioning component. A clamping component is fixedly connected to the front end of the side arm. The angular positioning component is fixedly connected to one end of the side arm near the clamping component. The proximity switch is fixed on the moving trajectory to clamp the workpiece to be processed to the corresponding position of the required angle. When the angular positioning component clamps the workpiece to be processed to the required angle, the proximity switch receives a sensing signal and stops the side arm from moving through the controller.

[0010] Preferably, the housing is fixedly connected to a sliding frame, the sliding frame having a sliding groove, and the proximity switch is slidably connected to the housing through the sliding groove.

[0011] Preferably, after the proximity switch is slid to the desired position, the proximity switch and the slide groove are fixed relative to each other.

[0012] Preferably, the proximity switch is interference-fitted with the slide.

[0013] Preferably, the marker is fixed to one end of the linkage rod located outside the housing, and the movement trajectory of the marker is a straight line trajectory between the marker and the linkage rod extending through the outer wall of the housing.

[0014] Preferably, the angular positioning member includes a fixed section and a clamping section that are fixedly connected to each other. The fixed section is fixedly connected to the side arm. When the workpiece to be processed needs to be adjusted to the required range, the clamping section clamps the workpiece to be processed.

[0015] Preferably, the thickness of the clamping section is less than the thickness of the fixing section.

[0016] Compared with the prior art, the advantages of this utility model are: This center frame integrates the full-range sensing and angular positioning functions of a proximity switch, solving the problems of older proximity switch center frames that could only detect and provide feedback signals when the side arm was fully extended to its maximum stroke, and lacked workpiece angular positioning function. Through structural optimization, it improves clamping accuracy, operational flexibility, and machining adaptability, effectively reducing manual adjustment costs, reducing machining scrap rate, and improving production efficiency and machining quality stability. It is suitable for precision machining with high requirements for workpiece clamping accuracy and angular positioning accuracy. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the structure of the central frame for the full-range sensing of the proximity switch described in this utility model; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the structure of the center frame for clamping a crankshaft workpiece with the proximity switch's full-range sensing capability, where point B is the clamping position of the clamping section during angular positioning, and point C is the clamping position of the clamping component during processing. Figure 4 This is a cross-sectional view of the center frame of the old-style proximity switch described in this utility model.

[0018] The components are: 1. Housing; 11. Middle arm; 12. Side arm; 121. Clamping component; 13. Sliding frame; 131. Slide groove; 2. Proximity switch; 3. Linkage component; 4. Marking component; 5. Angular positioning component; 51. Fixed section; 52. Clamping section; 6. Crankshaft workpiece. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to specific embodiments: like Figure 1 , Figure 2 and Figure 4As shown, a central frame for full-range proximity switch sensing includes a housing 1, a central arm 11 mounted on the housing 1, at least one side arm 12, at least one proximity switch 2, and a linkage 33. The central arm 11 and the side arm 12 move synchronously. The proximity switch 2 senses the opening range of the side arm 12. The proximity switch 2 is movably connected to the housing 1, which can be a sliding connection or a rotational connection. The linkage 3 is fixedly connected to the central arm 11. During the opening and clamping process of the side arm 12, the linkage 3 moves linearly back and forth with the central arm 11. A marker 4 is provided on the linkage 3, which can be fixedly connected or driven to the linkage 3. The movement trajectories of the proximity switch 2 and the marker 4 are parallel. When the positions of the proximity switch 2 and the marker 4 correspond, a sensing signal is received. The marker 4 and the movement trajectory of the proximity switch 2 correspond one-to-one. The sensing range of the proximity switch 2 is the maximum stroke of the side arm 12 from closed to open. As arm 12 opens, the middle arm 11 drives the linkage 3 to move, causing the marker 4 to move along the movement trajectory. After the side arm 12 opens to the required extent, the proximity switch 2 receives a sensing signal when it aligns with the position of the marker 4. The opening extent of the side arm 12 is detected by the sensing signal. Through the synchronous linkage mechanism of proximity switch 2, linkage 3, and marker 4, proximity switch 2 can flexibly adjust the sensing position. Compared with the old-fashioned proximity switch, the center frame can only sense the signal when the side arm 12 is fully extended. When the side arm 12 of the center frame is opened to any extent by proximity switch 2, the marker 4 can move synchronously with linkage 3 to the corresponding position, align with proximity switch 2, and trigger the sensing signal. This realizes the detection and control of the opening extent of the side arm 12, reducing the problems of workpiece damage, excessive clamping, or unstable clamping caused by improper arm extension. This improves the clamping accuracy and operational flexibility of the center frame.

[0020] How to use proximity switch 2: 1. The proximity switch 2 is fixed on the movement trajectory at a position corresponding to the required opening range of the side arm 12. When the side arm 12 moves to the corresponding range, the marker 4 moves to the position corresponding to the proximity switch 2, so that the proximity switch 2 receives the sensing signal. 2. After the side arm 12 is opened to the required range, move the proximity switch 2 to the position corresponding to the marker 4 to receive the sensing signal.

[0021] like Figures 1-2As shown, the center frame has two usage modes: one is to detect the opening range of the side arm 12 by fixing the position of the proximity switch 2, and the other is to move the proximity switch 2 to align with the marker 4. This adapts to different processing needs. When processing workpieces of the same specifications in batches, the proximity switch 2 can be pre-fixed at the corresponding movement trajectory position of the side arm 12 with the required opening range. When the side arm 12 moves to that range during workpiece processing, the signal is automatically triggered, eliminating the need for repeated adjustments and shortening the opening and clamping time of the center frame, thereby improving processing efficiency. When processing workpieces with various specifications and varying range requirements, the proximity switch 2 can be moved to align with the marker 4 after the side arm 12 has opened to the target range, making the operation more flexible and convenient.

[0022] like Figures 1-4 As shown, the center frame is also equipped with an angular positioning component 5, and a clamping component 121 is installed at the front end of the side arm 12. The angular positioning component 5 is installed on the side arm 12 near the clamping component 121, ensuring the consistency of the synchronous movement of the angular positioning component 5 with the side arm 12, reducing positioning deviation, and thus improving the reliability of angular positioning. The proximity switch 2 is fixed on the moving trajectory to clamp the workpiece to be processed to the corresponding position of the required angle. When the angular positioning component 5 clamps the workpiece to be processed to the required angle, the proximity switch 2 receives the sensing signal and stops the side arm 12 through the controller. The angular positioning component 5 includes a fixed section 51 and a clamping section 52 that are fixedly connected to each other. The fixed section 51 is fixedly connected to the side arm 12. The clamping section 52 is used to clamp and angularly position the workpiece to be processed when it needs to be adjusted to the required angle. The angular positioning component 5 uses the clamping section 52 to directly act on the workpiece to be processed. With the sensing control of the proximity switch 2, the technical problem that the center frame of the old proximity switch cannot be angularly positioned is solved. Before processing, the proximity switch 2 is fixed on the track at the position corresponding to the required angle of the workpiece to be processed. When the side arm 12 drives the angular positioning component 5 to clamp the workpiece and rotate to the target angle, the marker 4 and the proximity switch 2 are aligned and trigger the sensing signal. The controller immediately controls the side arm 12 to stop moving, thereby realizing the angular positioning of the workpiece and reducing quality problems such as processing size deviation caused by manual rough alignment.

[0023] like Figures 1-3As shown, in at least one embodiment, a sliding frame 13 is installed on the housing 1. The sliding frame 13 has a sliding groove 131. The proximity switch 2 is slidably connected to the housing 1 through the sliding groove 131. The sliding groove 131 provides a stable sliding guide for the proximity switch 2. After the proximity switch 2 slides to the desired position, the proximity switch 2 and the sliding groove 131 are relatively fixed. After the proximity switch 2 is adjusted to the desired position, it is reliably fixed, avoiding positional displacement caused by equipment vibration during processing, and ensuring the accuracy and stability of the sensing signal. The marker 4 is fixed on the linkage 3 at one end outside the housing 1. The movement trajectory of the marker 4 is a straight line between the marker 4 and the linkage 3 extending through the outer wall of the housing 1. The proximity switch 2 and the slide 131 are interference-fitted. In other embodiments, the position of the proximity switch 2 can be fixed by a temporary fixing device. The angular positioning member 5 includes a clamping section 52 and a fixing section 51. The thickness of the clamping section 52 is less than the thickness of the fixing section 51. The central axes of the clamping section 52 and the fixing section 51 are the same, which ensures the structural stability and clamping force transmission efficiency during angular positioning. The thinning of the clamping section 52 also reduces the obstruction and interference of the clamping surface of the workpiece to be processed. In other embodiments, the marker 4 and the linkage 3 can also be screw drive or linkage drive. The movement trajectory of the marker 4 and the proximity switch 2 can also be a non-overlapping trajectory such as a circle or an arc.

[0024] Example

[0025] like Figures 1-3As shown, a central frame for full-range proximity switching includes a housing 1, a central arm 11 mounted on the housing 1, two side arms 12, two proximity switches 2, and a cylindrical linkage 3. A square marker 4 is integrally formed on one end of the linkage 3 outside the housing 1. The proximity switches 2 are inductive. A sliding frame 13 is mounted on the housing 1, and the sliding frame 13 has a groove 131. The proximity switches 2 are slidably connected to the housing 1 through the groove 131. After the proximity switches 2 slide to the desired position, they are interference-fitted with the groove 131, fixing the proximity switches 2 in the corresponding position within the groove 131. The movement trajectory of the marker 4 is a straight line between the marker 4 and the linkage 3 extending through one side of the outer wall of the housing 1. The central frame also includes a block-shaped angular positioning component 5, which includes an integrally formed fixing section 51 and a clamping section 52. The fixing section 51 is fixedly connected to the side arms 12. When the workpiece to be processed needs to be adjusted to the required angle, the workpiece is clamped by the clamping section 52. The angular positioning component 5 rotates with the side arm 12 to compensate for the angular position deviation and achieve angular positioning. The thickness of the clamping section 52 is half that of the fixed section 51. The central axis of the clamping section 52 and the fixed section 51 are the same. The clamping component 121 is installed at the front end of the side arm 12. The angular positioning component 5 is installed at the end of the side arm 12 near the clamping component 121. The angular positioning component 5 has two screw holes and is fixed to the side arm 12 by two screws. The front end of the side arm 12 has a groove. The angular positioning component 5 is integrally formed with a protrusion that mates with the groove. During installation, the protrusion is embedded in the groove. The proximity switch 2 is fixed on the moving trajectory to clamp the workpiece to the corresponding position of the required angle. When the angular positioning component 5 clamps the workpiece to the required angle, the proximity switch 2 receives the sensing signal and stops the side arm 12 through the controller.

[0026] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.

Claims

1. A central frame for full-range sensing of a proximity switch, comprising a housing (1) and a central arm (11) and at least one side arm (12) disposed on the housing (1), wherein the central arm (11) and the side arm (12) move synchronously, characterized in that, The central frame also includes: At least one proximity switch (2) is used to sense the extent of the opening of the side arm (12), the proximity switch (2) being movably connected to the housing (1); Linkage component (3), which is fixedly connected to the middle arm (11), and a marker (4) is provided on the linkage component (3). The proximity switch (2) and the marker (4) are arranged in parallel along their movement trajectories. When the proximity switch (2) and the marker (4) are in the same position, the proximity switch (2) receives a sensing signal. The sensing range of the proximity switch (2) is the maximum stroke of the side arm (12) from closed to open.

2. The central frame for full-range sensing of a proximity switch according to claim 1, characterized in that: After the side arm (12) opens, the middle arm (11) drives the linkage (3) to move, causing the marker (4) to move along the activity trajectory. When the proximity switch (2) moves to the position corresponding to the marker (4), it receives a sensing signal and detects the opening amplitude of the side arm (12) through the sensing signal.

3. The central frame for full-range sensing of a proximity switch according to claim 1, characterized in that: The proximity switch (2) is fixed at the position corresponding to the required opening range of the side arm (12) on the movement trajectory. When the side arm (12) moves to the corresponding range, the marker (4) moves to the position corresponding to the proximity switch (2) so that the proximity switch (2) receives the sensing signal.

4. The central frame for full-range sensing of a proximity switch according to claim 1, characterized in that: It also includes an angular positioning component (5), and a clamping component (121) is fixedly connected to the front end of the side arm (12). The angular positioning component (5) is fixedly connected to one end of the side arm (12) near the clamping component (121). The proximity switch (2) is fixed on the moving trajectory to clamp the workpiece to be processed to the corresponding position of the required angle. When the angular positioning component (5) clamps the workpiece to be processed to the required angle, the proximity switch (2) receives the sensing signal and stops the side arm (12) from moving through the controller.

5. The central frame for full-range sensing of a proximity switch according to claim 1, characterized in that: The housing (1) is fixedly connected to a sliding frame (13), and the sliding frame (13) has a sliding groove (131). The proximity switch (2) is slidably connected to the housing (1) through the sliding groove (131).

6. The central frame for full-range sensing of a proximity switch according to claim 5, characterized in that: After the proximity switch (2) is slid to the desired position, the proximity switch (2) is fixed relative to the slide groove (131).

7. The central frame for full-range sensing of a proximity switch according to claim 6, characterized in that: The proximity switch (2) is interference-fitted with the slide (131).

8. The central frame for full-range sensing of a proximity switch according to claim 1, characterized in that: The marker (4) is fixed on the linkage (3) at one end outside the housing (1). The movement trajectory of the marker (4) is a straight line trajectory between the marker (4) and the linkage (3) on one side of the outer wall of the housing (1).

9. The central frame for full-range sensing of a proximity switch according to claim 4, characterized in that: The angular positioning component (5) includes a fixed section (51) and a clamping section (52) that are fixedly connected to each other. The fixed section (51) is fixedly connected to the side arm (12). When the workpiece to be processed needs to be adjusted to the required range, the clamping section (52) clamps the workpiece to be processed.

10. The central frame for full-range sensing of a proximity switch according to claim 9, characterized in that: The thickness of the clamping section (52) is less than the thickness of the fixing section (51).

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