Sensor shell machining clamp

Abstract

The utility model relates to a sensor shell machining clamp which comprises a clamp support and further comprises clamp body components arranged on the top of the clamp support in an array mode and used for clamping a sensor shell. The positioning assembly is telescopically arranged on the clamp main body part and is used for positioning the shell on the clamp main body part; and the opening and closing component is rotatably arranged on the clamp bracket and is coaxial with the clamp main body component. According to the utility model, the sensor shell can be kept at a stable position and a stable posture in the machining process, so that the machining precision and the production efficiency are improved, and the increasingly stringent quality requirements of sensor products are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to sensor manufacturing technical field especially is a kind of sensor shell processing fixture. BACKGROUND

[0002] With the wide application of sensor technology in many fields, the processing precision requirement of sensor shell is also higher and higher. In the existing sensor shell processing process, the traditional fixture has many defects.

[0003] The positioning mode of part of traditional fixture is relatively rough, and the center position and key contour of sensor shell cannot be accurately determined, which leads to the size deviation in subsequent processing procedures (such as drilling, milling, turning, etc.), for example, the hole diameter is inconsistent, the flatness is not up to standard, etc. The assembly precision and performance stability of sensor are seriously affected. Moreover, the clamping force distribution of traditional fixture is often uneven, and in the processing process, especially when bearing larger cutting force, the sensor shell is prone to local deformation or displacement, which not only causes processing error, but also may damage the shell, increases the scrap rate and improves production cost. In addition, the versatility of some fixtures is poor, and for sensor shells of different shapes and sizes, the fixture needs to be frequently replaced or adjusted, which undoubtedly consumes a lot of time and manpower, reduces the production efficiency, and is difficult to meet the needs of rapid development and diversified production of modern sensor manufacturing industry. Therefore, it is of great significance to develop a new type of high-precision, high-universal and stable clamping sensor shell processing fixture. SUMMARY

[0004] The utility model aims at providing a kind of fixture for accurate clamping and positioning when sensor shell is processed, to ensure that sensor shell maintains stable position and posture during processing, thereby improving processing precision and production efficiency, to meet the quality requirements of sensor product increasingly stringent sensor shell processing fixture to solve the above technical problems.

[0005] The utility model discloses a sensor shell processing fixture mainly comprises fixture support, fixture main part, positioning assembly and open and close spare part. Fixture support is the basic support structure of whole fixture, provides stable mounting platform for other components, ensures the stability of the overall structure of fixture in the processing. Fixture main part array setting is in the top of fixture support, and it is the core part that directly contacts with sensor shell and realizes clamping function. Positioning assembly is telescopically arranged on the fixture main part, can accurately position according to the specific shape and size of sensor shell, determines the accurate position of shell in the fixture, provides accurate reference for subsequent processing operation. Open and close spare part rotatably arranged on the fixture support and coaxially arranged with fixture main part, through the interaction of specific mechanical structure and fixture main part, realizes the clamping and loosening operation of sensor shell, facilitates the loading and unloading of shell, and can provide stable and uniform clamping force during clamping, to ensure that sensor shell does not displace or deform during processing.

[0006] Further, the fixture support is made of high-strength and high-rigidity metal material (such as high-quality steel or aluminum alloy) to withstand various external forces generated during processing, such as cutting force, impact force, etc., to ensure the stability of the overall fixture structure. The shape and size are accurately calculated to not only meet the installation connection requirements with other components, but also consider the installation and fixing method of the fixture on the processing equipment (such as machine tool), usually a positioning hole or mounting groove is arranged at the bottom of the support to accurately position and firmly connect with the machine tool workbench, to ensure that the fixture does not displace or shake during processing, and to provide a solid foundation support for the precision machining of the sensor shell.

[0007] Further, the fixture main part mainly includes a main body seat, a moving guide seat and a clamping assembly. The main body seat and the moving guide seat are designed as hollow cylindrical bodies, which helps to reduce the overall weight of the fixture, facilitates the cooperative work with other components (such as the positioning assembly, the cooperation of the opening and closing component, etc.), and better adapts to the requirements of the rotary machining process during processing. The moving guide seat is fixed on the main body seat, and the connection between them is stable and reliable, ensuring the rigidity of the overall structure. The moving guide seat is provided with a sliding groove on the top circumference, which provides an accurate guide path for the movement of the clamping assembly, so that the clamping assembly can move stably and accurately in the radial direction.

[0008] Further, the clamping assembly comprises an L-shaped clamping moving block slidingly arranged on the sliding groove, which can freely slide in the sliding groove and has a side inclined surface designed to play a key role in cooperation with the opening and closing component. An L-shaped clamping arm made of polytetrafluoroethylene is detachably mounted on the clamping moving block. The polytetrafluoroethylene material has the advantages of good wear resistance, low friction coefficient, and chemical stability, which can effectively prevent scratches or wear on the surface of the sensor shell during clamping, while ensuring reliability during long-term use. The L-shaped clamping arm is arrayed with concave arc-shaped grooves, which are adapted to the shape of the sensor shell. When the clamping assembly clamps the sensor shell, the clamping arm can fully contact the shell surface and evenly distribute the clamping force, thereby stably fixing the sensor shell and preventing it from shifting or rotating during processing. In addition, a disc spring is arranged between the clamping assembly and the main body seat, which can provide a certain pre-tightening force so that the clamping assembly can maintain a certain clamping force on the sensor shell in the initial state. During processing, the disc spring can act as a buffer when subjected to external impact or vibration, further enhancing the stability and reliability of the clamp.

[0009] Further, the positioning assembly mainly comprises a positioning seat, a positioning push shaft, and a positioning jig head. The positioning seat is fixedly arranged on the jig main body component, which is fixed in position and stably installed, providing a reliable support basis for the extension and retraction movement of the positioning push shaft. The positioning push shaft is telescopically arranged on the positioning seat in the horizontal direction, and its precise extension and retraction movement is achieved through a specific driving mechanism (such as a gas cylinder, a hydraulic cylinder, or a screw nut mechanism, etc.). The positioning jig head is fixedly arranged at one end of the positioning push shaft, and has a side inclined surface designed to better adapt to the shape change of the shell when in contact with the sensor shell, accurately determine the center position or key contour position of the shell, and thus achieve precise positioning of the sensor shell. The positioning assembly plays a crucial role in the entire jig system, and its positioning accuracy directly affects the machining precision of the sensor shell. By accurately controlling the extension and retraction stroke of the positioning push shaft, the positioning requirements of different models and specifications of sensor shells can be met, improving the versatility of the jig.

[0010] Further, the opening and closing component mainly comprises a first driving source fixed on the clamp support, a rotating shaft fixedly connected with the output end of the first driving source, and an opening and closing block arranged at the end of the rotating shaft. The first driving source is a rotary cylinder, which has the advantages of stable output torque, convenient control, fast response speed, etc., and can meet the requirements of the opening and closing component for power. The rotating shaft is a force transmission component, which stably transmits the output torque of the rotary cylinder to the opening and closing block, ensuring that the opening and closing block can rotate according to the predetermined trajectory. The opening and closing block is circumferentially arranged with concave drive grooves, which cooperate with the inclined surfaces of the clamping moving blocks in the clamping assembly of the clamp main component. When the first driving source drives the rotating shaft to rotate along the axis, the opening and closing block rotates, and the inclined surfaces of the drive grooves and the clamping moving blocks press each other, thereby pushing the clamping moving blocks to spread outward along the radial direction, realizing the operation of loosening the clamped material. Conversely, when the rotating shaft rotates in the opposite direction, the interaction between the drive grooves of the opening and closing block and the inclined surfaces of the clamping moving blocks causes the clamping moving blocks to move inward along the radial direction, realizing the function of clamping the sensor housing. The sensor housing support portion is arranged outside the opening and closing block along the circumferential side, which can assist in supporting the bottom or side of the sensor housing during clamping, further enhancing the stability of the housing in the clamp, preventing it from tilting or falling during clamping.

[0011] Compared with the prior art, the utility model has the advantages of:

[0012] 1) The positioning seat in the positioning assembly is fixed on the clamp main component, providing a stable basis for the telescopic movement of the positioning push shaft. The positioning push shaft is telescopic in the horizontal direction, and the positioning jig head on one end is provided with inclined surfaces on both sides. This inclined surface structure can accurately fit the specific parts of the sensor housing. When the positioning push shaft is extended, the center position or key contour position of the sensor housing can be accurately determined through the contact and extrusion of the inclined surfaces, effectively avoiding the machining size deviation caused by inaccurate positioning in the traditional positioning method. For example, when drilling the sensor housing, accurate positioning can ensure that the position accuracy of the hole is within a very small tolerance range, meeting the strict requirements of sensor products on assembly accuracy. Moreover, the telescopic design of the positioning push shaft enables the positioning assembly to adapt to sensor housings of different sizes and shapes. By adjusting the telescopic stroke of the positioning push shaft, accurate positioning of various types of housings can be achieved, greatly improving the versatility and adaptability of the clamp.

[0013] 2) The main body seat and the moving guide seat of the clamp main part are hollow cylindrical bodies. This structure not only reduces the overall weight of the clamp, but also facilitates rotation during processing, especially for turning and other processing techniques that require rotating workpieces. The slide groove array on the top circumference of the moving guide seat provides precise movement guidance for the clamping assembly, allowing it to move radially and stably. The L-shaped clamping moving block in the clamping assembly can smoothly slide in the slide groove, with one side of the inclined surface interacting with the opening and closing block of the opening and closing part to achieve clamping and loosening actions. The L-shaped clamping arm is made of polytetrafluoroethylene, which has a very low friction coefficient, effectively preventing scratches on the sensor shell surface during clamping, and its good chemical stability prevents damage to the shell due to contact with corrosive media. The array of concave arc-shaped grooves on the L-shaped clamping arm closely fits the shape of the sensor shell, allowing the clamping force to be evenly distributed on the shell surface, preventing local pressure from causing shell deformation. In addition, the disc spring between the clamping assembly and the main body seat provides stable pre-tightening force, allowing the sensor shell to be fixed to some extent during initial clamping. During processing, when subjected to cutting force, vibration, and other external disturbances, the disc spring can act as a buffer to absorb some energy, further enhancing the stability of the clamping, ensuring that the sensor shell maintains accurate position and posture during processing, effectively reducing waste and improving product quality.

[0014] 3) The first drive source (rotary cylinder) of the opening and closing part drives the rotating shaft to rotate along the axis, bringing the opening and closing block at the end to rotate. The concave drive groove array on the opening and closing block cooperates with the inclined surface of the clamping moving block in the clamping assembly of the clamp main part, achieving efficient clamping and loosening operations. When the rotary cylinder drives the rotating shaft to rotate forward, the drive groove of the opening and closing block presses the inclined surface of the clamping moving block, causing the clamping moving block to expand radially outward, quickly loosening the sensor shell for easy assembly and disassembly. When the rotating shaft rotates in the opposite direction, the opening and closing block drives the clamping moving block to move radially inward, achieving clamping action. This design makes the clamping process fast and convenient, greatly shortening the clamping time of the sensor shell and improving production efficiency. Moreover, by adjusting the air pressure or torque of the rotary cylinder, the rotation angle and force of the opening and closing block can be accurately controlled, allowing precise adjustment of the clamping force, meeting the clamping needs of sensor shells of different materials and sizes, and avoiding damage to the shell due to excessive or insufficient clamping force.

[0015] 4) The overall structural design of the clamp makes it extremely convenient to operate. The clamp support provides a stable support platform for the entire clamp, and the positioning holes or mounting slots at the bottom facilitate precise positioning and secure connection with the machine tool workbench, ensuring that the clamp does not shift or wobble during processing. The layout between the clamp main component, positioning assembly and opening and closing component is reasonable and works smoothly in cooperation. When clamping the sensor shell, the operator only needs to place the shell in the concave arc-shaped slot of the L-shaped clamp arm of the clamp main component first, then start the positioning assembly for positioning, and then realize clamping through the opening and closing component. The operation steps are simple and clear. Moreover, the structural design of each component is convenient for maintenance and maintenance, for example, the positioning push shaft and positioning jig head of the positioning assembly can be easily disassembled and replaced if they are worn or damaged; in the clamping assembly of the clamp main component, the L-shaped clamp arm can be disassembled and installed, which is convenient for replacing clamp arms of different specifications to adapt to different shells, and the installation method of the clamping moving block in the sliding groove is also convenient for inspection and cleaning; the connection relationship between the rotary cylinder, rotary shaft and opening and closing block of the opening and closing component is clear, which is convenient for troubleshooting and maintenance, reduces the maintenance cost of the clamp, improves its service life and reliability, and further improves the production efficiency.

[0016] 5) The structural design of the clamp gives it good versatility. The telescopic positioning push shaft of the positioning assembly can adapt to sensor shells of different sizes and shapes, and by adjusting its telescopic stroke, a variety of shell models can be precisely positioned. Although the concave arc-shaped slot on the L-shaped clamp arm of the clamp main component is designed for a specific shape of sensor shell, it can be replaced with the corresponding clamp arm according to the contour of different shells due to its detachable and replaceable nature, further expanding the application range of the clamp. The cooperation mode of the opening and closing block driven by the rotary cylinder of the opening and closing component and the clamping assembly can adapt to the required clamping force adjustment of different size shells within a certain range. Whether it is a small precision sensor shell or a larger size shell, it can be clamped and processed on this clamp, reducing the cost of enterprises needing to equip multiple clamps due to the production of different models of sensor shells, improving the utilization rate of production equipment, and enhancing the market competitiveness of enterprises in the sensor manufacturing field.

[0017] 6)The structural design of the whole fixture focuses on reliability. The fixture support is made of high-strength metal material, which has sufficient strength and rigidity and can withstand various external forces generated during machining, such as cutting force, impact force, etc., providing a stable installation foundation for other components. The main body seat and the moving guide seat of the main body component of the fixture adopt a hollow cylindrical rotary body structure, which not only ensures the structural strength but also reduces the weight. The connection between the two is stable, and the machining precision of the sliding groove at the top of the moving guide seat ensures the accuracy and stability of the movement of the clamping assembly. The positioning seat of the positioning assembly is firmly installed, the extension and retraction of the positioning push shaft is stable and reliable, and the inclined surface structure of the positioning jig head is precisely machined to ensure the positioning accuracy and repeatability. The first driving source (rotary cylinder) of the opening and closing component has good output characteristics, the connection between the rotary shaft and the opening and closing block is firm, and the structural design of the driving groove on the opening and closing block and the sensor shell support part is reasonable, which can stably realize the clamping and loosening operations and the support function of the shell during long-term use. The coordinated work between the components is optimized and closely cooperates, effectively avoiding machining errors or safety accidents caused by looseness, interference or failure between the components, ensuring the continuity and stability of the sensor shell machining process, improving the production efficiency and reducing the production cost. BRIEF DESCRIPTION OF DRAWINGS

[0018] To further illustrate the embodiments, the utility model provides the attached drawing. These drawings are part of the utility model disclosure, which mainly serves to illustrate the embodiments, and can be combined with the relevant description of the specification to explain the operation principle of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation modes and advantages of the utility model. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0019] Figure 1 The three-dimensional view of the sensor shell machining fixture. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0021] In order to make those skilled in the art better understand the utility model scheme, the utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0022] Please refer to the attached Figure 1The utility model discloses a sensor shell processing clamp, including the clamp support 1, the sensor shell processing clamp further includes:

[0023] Clamp main part 2, array setting in the top of clamp support 1 is used for clamping sensor shell;

[0024] Positioning assembly 3, retractable setting on the clamp main part 2 is used for the positioning of shell on the clamp main part 2;And

[0025] Opening and closing part 4, rotatable setting on the clamp support 1 and with the coaxial setting of clamp main part 2.

[0026] On the basis of above-mentioned embodiment, the clamp main part 2 includes main body seat 21;The mobile guide seat 22 is fixed on the main body seat 21;The clamping assembly 23 is arranged on the top of the mobile guide seat 22 and can be radially pressed;The clamping assembly 23 and the main body seat 21 are provided with disc spring (not shown in the figure), which is used to provide the power of clamping parts.

[0027] On the basis of above-mentioned embodiment, the main body seat 21 and the mobile guide seat 22 are hollow cylindrical bodies;The top of the mobile guide seat 22 is provided with a slide groove in the circumferential direction;The clamping assembly 23 is movably arranged in the slide groove;

[0028] The clamping assembly 23 includes an L-shaped clamping moving block movably arranged in the slide groove;The L-shaped clamping moving block is detachably provided with an L-shaped clamping arm made of polytetrafluoroethylene;The L-shaped clamping arm is provided with an inner concave arc-shaped groove in the array;

[0029] The clamping moving block is provided with a slope on one side.

[0030] On the basis of above-mentioned embodiment, the positioning assembly 3 includes a positioning seat 31 fixed on the clamp main part 2;The positioning seat 31 is provided with a positioning push shaft 32 in the horizontal direction;The positioning push shaft 32 is fixedly provided with a positioning jig head 33 on one end;The positioning jig head 33 is provided with a slope on both sides.

[0031] On the basis of above-mentioned embodiment, the opening and closing part 4 includes a first driving source 41 fixed on the clamp support 1;The first driving source 41 is fixedly connected with a rotating shaft 42 at the output end;The rotating shaft 42 is provided with an opening and closing block 43 at the end.

[0032] Wherein: when the first driving source 41 drives the rotating shaft 42 to rotate along the axis, the opening and closing block 43 is rotated to extrude the clamping assembly 23 on the clamp main part 2 and is stretched out radially to realize loose clamping.

[0033] On the basis of the above-mentioned embodiment, the first driving source 41 is a rotary cylinder; the open-close block 43 is provided with a concave driving groove in a circumferential array; and the open-close block 43 is provided with a sensor shell support part extending outward along the circumferential side.

[0034] In the use of the sensor shell machining clamp, first, according to the model and size of the sensor shell, the telescopic position of the positioning push shaft of the positioning assembly is adjusted, so that the positioning jig head is in the appropriate initial position. Then the sensor shell is placed in the concave arc-shaped groove of the L-shaped clamping arm of the clamp main body part. At this time, due to the pre-tightening force of the disc spring between the clamping assembly and the main body seat, the sensor shell is preliminarily clamped, but still has a certain adjustable space. Then the positioning assembly is started, the positioning push shaft is extended, the positioning jig head contacts the positioning part of the sensor shell, and the center position or key contour position of the shell is accurately determined through the two sides of the inclined surface, completing the accurate first positioning of the sensor shell. Then, the first driving source (rotary cylinder) of the opening and closing part is started, the rotating shaft drives the open-close block to rotate, the driving groove of the open-close block interacts with the inclined surface of the clamping moving block of the clamping assembly, so that the clamping moving block is stretched outward along the radial direction, and the preliminary clamping of the sensor shell is released. At this time, the position of the sensor shell can be fine-tuned to ensure that it is accurately positioned in the clamp. Then the first driving source is started again, the rotating shaft is reversed, the clamping moving block is driven by the open-close block to move inward along the radial direction, the L-shaped clamping arm re-clamps the sensor shell, and under the action of the disc spring, the clamping force is further enhanced, so that the sensor shell is firmly fixed during the machining process. During the entire machining process, the positioning assembly always maintains the positioning effect on the sensor shell, ensuring that its position does not shift; the clamping assembly provides stable and uniform clamping force to resist external force disturbances such as cutting force and vibration during the machining process; and the opening and closing part conveniently realizes the loading and unloading operation of the sensor shell and the accurate control of the clamping force. When the sensor shell machining is completed, the first driving source is started again, the rotating shaft drives the open-close block to rotate, the clamping assembly is released from clamping the sensor shell, and then the machined sensor shell is carefully taken out, preparing for the next round of machining operation.

[0035] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with a preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content without departing from the scope of the technical solution of the present application, and any equivalent embodiments with equivalent changes, modifications and simplifications made on the basis of the technical essence of the present application to the above embodiments are still within the scope of the technical solution of the present application.

Claims

1. A sensor housing machining jig comprising a jig support (1), characterized in that, The sensor shell machining clamp further comprises: A clamp body part (2) arranged on the top of the clamp support (1) for clamping the sensor shell; A positioning assembly (3) arranged on the clamp body part (2) for positioning the shell on the clamp body part (2); and An opening and closing part (4) rotatably arranged on the clamp support (1) and coaxially arranged with the clamp body part (2).

2. The sensor housing machining fixture of claim 1, wherein: The clamp body part (2) comprises a body seat (21); a moving guide seat (22) is fixedly arranged on the body seat (21); a clamping assembly (23) is arranged on the top of the moving guide seat (22) and can be radially pressed towards each other; a disc spring is arranged between the clamping assembly (23) and the body seat (21).

3. The sensor housing machining fixture of claim 2, wherein: The body seat (21) and the moving guide seat (22) are both hollow cylindrical rotary bodies; a sliding groove is arranged on the top of the moving guide seat (22) in a circumferential array; the clamping assembly (23) is movably arranged in the sliding groove; The clamping assembly (23) comprises an L-shaped clamping moving block movably arranged in the sliding groove; an L-shaped clamping arm made of polytetrafluoroethylene is detachably installed on the clamping moving block; a concave arc-shaped groove is arranged on the L-shaped clamping arm in an array; An inclined surface is arranged on one side of the clamping moving block.

4. The sensor housing machining fixture of claim 1, wherein: The positioning assembly (3) comprises a positioning seat (31) fixedly arranged on the clamp body part (2); a positioning push shaft (32) is telescopically arranged on the positioning seat (31) in a horizontal direction; a positioning jig head (33) is fixedly arranged on one end of the positioning push shaft (32); inclined surfaces are arranged on both sides of the positioning jig head (33).

5. The sensor housing machining fixture of claim 1, wherein: The opening and closing part (4) comprises a first driving source (41) fixedly arranged on the clamp support (1); a rotating shaft (42) is fixedly connected to the output end of the first driving source (41); an opening and closing block (43) is arranged at the end of the rotating shaft (42); Wherein: when the first driving source (41) drives the rotating shaft (42) to rotate along the axis, the opening and closing block (43) is rotated to press the clamping assembly (23) on the clamp body part (2) and expand it radially outward to achieve loose clamping.

6. The sensor housing machining fixture of claim 5, wherein: The first driving source (41) is a rotary air cylinder; a concave driving groove is arranged on the opening and closing block (43) in a circumferential array; a sensor shell support part is arranged on the opening and closing block (43) and extends outward along the circumference.

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