Keyway symmetry degree measuring device
By designing a keyway symmetry measuring device, and utilizing a combination of a measuring stage, a fixed base, a clamping assembly, and a laser rangefinder, the problems of low keyway measurement accuracy and complex operation in existing technologies have been solved, achieving high-precision, multi-angle, and multi-position measurement requirements.
Patent Information
- Application Number
- CN202422119053.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-08-30
AI Technical Summary
Existing keyway measurement tools are mostly manual, with limited accuracy and complex operation, making it difficult to meet the needs of high-precision measurement.
A keyway symmetry measuring device is adopted, including a measuring stage, a fixed base, a positioning component, a clamping component, a measuring base, and a laser rangefinder. Multi-angle measurement is achieved through a dual-axis sliding component.
It enables high-precision, multi-angle, and multi-position keyway symmetry measurement, improving the accuracy and efficiency of measurement, and is applicable to keyways of different types and sizes.
Smart Images
Figure CN223636818U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of keyway measurement, more specifically, to a keyway symmetry measurement device. BACKGROUND
[0002] A keyway is a structure in mechanical engineering, usually a long, narrow groove, used to transmit torque between parts such as shafts and hubs. Inside the keyway is a key (also known as a key bar), which transmits motion and power through the engagement of the key, preventing relative rotation of the parts on the shaft. There are many types of keyways, such as flat keyways, semicircular keyways, and oblique keyways. Different types of keyways are suitable for different working conditions and design requirements.
[0003] Keyway processing usually uses milling, broaching, and grinding processes. Milling is commonly used for flat keyway processing, while broaching is suitable for complex-shaped keyways, and grinding is used for high-precision keyway processing. The machining accuracy of the keyway directly affects the stability and life of the mechanical transmission system. Generally, the size tolerance and form and position tolerance of the keyway are required to be high, especially in high-precision transmission systems.
[0004] The symmetry of the keyway refers to the degree of symmetry of the keyway center line relative to the shaft center line. The symmetry directly affects the quality of the key and keyway fit, thereby affecting the performance and life of the transmission system. Keyway measurement usually includes size measurement, form and position measurement, and symmetry measurement. Common measurement tools include vernier calipers, micrometers, feeler gauges, and three-coordinate measuring machines.
[0005] However, the current measurement tools used are mostly manual measurement tools, which makes these measurement methods prone to deviation when the operator is not concentrating, and the operation is complex and the precision is limited. INVENTION CONTENTS
[0006] In view of the problems existing in the prior art, the purpose of the utility model is to solve the problems raised in the background art.
[0007] To solve the above problems, the utility model adopts the following technical scheme:
[0008] The keyway symmetry measurement device comprises:
[0009] A measuring table is provided with a fixed seat, which is arranged in a cross shape, and a positioning assembly for limiting the keyway body and a clamping assembly for fixing the keyway body are arranged on the fixed seat;
[0010] A measuring seat is arranged on one side of the measuring table, a laser range finder is arranged on the measuring seat, and a double-shaft sliding assembly for controlling the laser range finder to measure is arranged between the laser range finder and the measuring seat.
[0011] As one preferred scheme of the utility model, the middle part of the fixed seat is symmetrically provided with a first sliding groove in the longitudinal direction, the positioning assembly comprises a first bidirectional screw rod which is longitudinally rotatably arranged in the middle part of the fixed seat, two limiting blocks are symmetrically arranged in the first sliding grooves in a sliding mode, the two limiting blocks are symmetrically arranged on the first bidirectional screw rod in a threaded mode, a first motor is fixedly arranged on one side of the first bidirectional screw rod, and the output end of the first motor is fixedly connected with the first bidirectional screw rod.
[0012] As one preferred scheme of the utility model, one end of the limiting block is arranged in an arc-shaped strip mode outside the first sliding groove, and a rubber pad is arranged on the inner side of the arc-shaped surface.
[0013] As one preferred scheme of the utility model, the middle part of the fixed seat is symmetrically provided with a second sliding groove in the transverse direction, the clamping assembly comprises a second bidirectional screw rod which is transversely rotatably arranged in the middle part of the fixed seat, two clamping blocks are arranged in the middle parts of the second sliding grooves in a sliding mode, the two clamping blocks are symmetrically arranged on the second bidirectional screw rod in a threaded mode, a second motor is fixedly arranged on one side of the second bidirectional screw rod, and the output end of the second motor is fixedly connected with the second bidirectional screw rod.
[0014] As one preferred scheme of the utility model, one side of the two clamping blocks adjacent to each other is arranged in a conical shape.
[0015] As one preferred scheme of the utility model, the double-shaft sliding assembly comprises a first sliding rail which is fixedly arranged on the measuring table, a second sliding rail is arranged on the first sliding rail in a sliding mode, a sliding seat is arranged in the middle part of the second sliding rail in a sliding mode, a mounting plate is rotatably arranged on one side of the sliding seat, and the laser range finder is fixedly arranged on the mounting plate.
[0016] A first electric push rod is fixedly arranged on the first sliding rail, the output end of the first electric push rod is fixedly connected with the second sliding rail, a second electric push rod is fixedly arranged on the second sliding rail, and the output end of the second electric push rod is fixedly connected with the sliding seat.
[0017] As one preferred scheme of the utility model, a forward-reverse motor is fixedly arranged on one side of the sliding seat away from the mounting plate, and the output end of the forward-reverse motor is fixedly connected with the central shaft of the mounting plate.
[0018] Compared with the prior art, the utility model has the advantages of:
[0019] High-precision measurement: through the precise sliding assembly and the rotary measuring head, the high precision and comprehensiveness of measurement are ensured.
[0020] High flexibility: the multi-axis motion platform and the rotary measuring head design realize multi-angle and multi-position measurement, and improve the flexibility of measurement.
[0021] Easy operation: electric push rod drive, automatic adjustment and positioning, reduce manual operation, improve operation efficiency.
[0022] Stable clamping: the design of limiting block and clamping block ensures the stability and center positioning of the workpiece, improves the measurement accuracy.
[0023] Widely applicable: suitable for different types and sizes of keyway bodies, with wide applicability and multifunctionality.
[0024] The keyway symmetry measuring device can meet the measurement requirements of high precision, high efficiency, multiple angles and multiple positions, and is widely used in various keyway symmetry measurement tasks, and has significant technical advantages and practical value. BRIEF DESCRIPTION OF DRAWINGS
[0025] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;
[0026] Figure 2 It is a fixed seat enlarged structure schematic diagram of the utility model;
[0027] Figure 3 It is a laser range finder enlarged structure schematic diagram of the utility model;
[0028] Figure 4 It is a double-shaft sliding assembly structure schematic diagram of the utility model.
[0029] Explanation of figure marks:
[0030] 1, measuring table; 2, fixed seat; 3, positioning assembly; 31, first sliding groove; 32, first bidirectional screw; 33, limiting block; 34, first motor; 4, clamping assembly; 41, second sliding groove; 42, second bidirectional screw; 43, clamping block; 44, second motor; 5, measuring seat; 6, laser range finder; 7, double-shaft sliding assembly; 71, first sliding rail; 72, second sliding rail; 73, sliding seat; 74, mounting plate; 75, first electric push rod; 76, second electric push rod; 8, rubber pad; 9, forward and reverse motor. DETAILED DESCRIPTION
[0031] The technical solutions in the embodiments of the utility model will be described clearly and completely 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 fall within the scope of protection of the utility model.
[0032] EMBODIMENT
[0033] As Figures 1-4The keyway symmetry measuring device shown comprises:
[0034] The measuring table 1 is provided with a fixed seat 2 fixedly arranged thereon, the fixed seat 2 is arranged in a cross shape, the fixed seat 2 is provided with a positioning assembly 3 for limiting the keyway body and a clamping assembly 4 for fixing the keyway body.
[0035] The measuring table 1 is provided with a measuring seat 5, the measuring seat 5 is provided with a laser range finder 6, and the laser range finder 6 and the measuring seat 5 are provided with a double-shaft sliding assembly 7 for controlling the laser range finder 6 to measure.
[0036] In further embodiments, the measuring table 1 serves as the basic structure of the entire measuring device, providing a stable working platform, the fixed seat 2 provides multi-directional support and fixation through the cross-shaped structure; the positioning assembly 3 limits the keyway body to ensure its correct measurement position, the clamping assembly 4 fixes the keyway body to further enhance stability, and through precise clamping force, it ensures that the keyway body does not displace or deform during measurement, improving the reliability and accuracy of measurement; the measuring seat 5 is used to provide a stable measuring base for the laser range finder 6, the laser range finder 6 is used to measure the symmetry of the keyway, and high-precision measurement is achieved through laser ranging, the laser range finder 6 has the characteristics of high precision and fast measurement, and can provide real-time measurement data to ensure the accuracy and reliability of the measurement results; through the double-shaft sliding assembly 7, the laser range finder 6 can move freely during measurement, covering all parts of the keyway, providing comprehensive measurement data to ensure accurate measurement of the keyway symmetry.
[0037] Specifically, the middle part of the fixed seat 2 is symmetrically provided with a first sliding groove 31, the positioning assembly 3 comprises a first double-shaft screw 32 longitudinally arranged in the middle part of the fixed seat 2, two limiting blocks 33 are symmetrically arranged in the two first sliding grooves 31, and the two limiting blocks 33 are symmetrically and threadedly connected to the first double-shaft screw 32, a first motor 34 is fixedly arranged on one side of the first double-shaft screw 32, and the output end of the first motor 34 is fixedly connected to the first double-shaft screw 32.
[0038] In further embodiments, the first sliding groove 31 provides a sliding track for the limiting block 33 to ensure stable sliding of the limiting block 33 in the fixed seat 2, preventing lateral shaking and achieving accurate positioning of the keyway body, wherein the two limiting blocks 33 are symmetrically moved by rotating the first double-shaft screw 32 to ensure synchronous adjustment of the limiting blocks 33, and the limiting blocks 33 are fixedly connected to the first double-shaft screw 32 by threads to ensure symmetrical sliding along the first sliding groove 31, achieving synchronous and symmetrical limiting adjustment to ensure accurate positioning and positioning of the keyway body; the first motor 34 drives the first double-shaft screw 32 to rotate to achieve automatic adjustment of the limiting block 33, improving positioning accuracy.
[0039] Specifically, the limiting block 33 is arranged in an arc-shaped strip at one end outside the first sliding groove 31, and a rubber pad 8 is arranged on the inner side of the arc-shaped strip.
[0040] In further embodiments, the arc-shaped strip design of the limiting block 33 provides a larger contact area, better fits the keyway body, reduces single-point pressure, disperses stress, improves the stability of the limiting block 33, the rubber pad 8 provides flexible contact, increases friction, improves the grip of the limiting block 33, ensures the stability of the keyway body in the limiting block 33, protects the surface of the keyway body, prolongs the service life of the equipment and the workpiece, and ensures the accuracy of the measurement data.
[0041] Specifically, the middle part of the fixed seat 2 is symmetrically provided with a second sliding groove 41, the clamping assembly 4 includes a second double screw 42 transversely arranged in the middle part of the fixed seat 2, the middle part of the two second sliding grooves 41 is slidably provided with a clamping block 43, the two clamping blocks 43 are symmetrically and threadedly connected to the second double screw 42, the fixed seat 2 is fixedly provided with a second motor 44 on one side of the second double screw 42, and the output end of the second motor 44 is fixedly connected with the second double screw 42.
[0042] In further embodiments, the second sliding groove 41 provides a stable and accurate sliding path for the clamping block 43, the second double screw 42 is transversely arranged in the middle part of the fixed seat 2, the screw threads at both ends of the screw are opposite in direction, and the clamping block 43 is symmetrically slid in the sliding groove by rotating the second double screw 42, thereby realizing synchronous and symmetric clamping adjustment and ensuring accurate fixing of the keyway body; the clamping block 43 realizes clamping of the keyway body by rotating the second double screw 42, accurately controls the clamping position, ensures the stability of the keyway body during measurement, the second motor 44 drives the second double screw 42 to rotate, thereby realizing automatic adjustment of the clamping block 43, and improving positioning efficiency and accuracy.
[0043] Specifically, one side of the two clamping blocks 43 adjacent to each other is arranged in a conical shape.
[0044] In further embodiments, the conical design can provide more accurate clamping force, concentrate the force at the center position of the keyway body, improve the adaptability of the clamping block 43 to keyways of different sizes, enable it to adaptively adjust, and ensure the stability and accuracy of clamping.
[0045] Specifically, the double-shaft sliding assembly 7 includes a first sliding rail 71 fixedly arranged on the measuring table 1, a second sliding rail 72 slidably arranged on the first sliding rail 71, a sliding seat 73 slidably arranged at the middle part of the second sliding rail 72, a mounting plate 74 rotatably arranged at one side of the sliding seat 73, and the laser range finder 6 is fixedly arranged on the mounting plate 74.
[0046] The first electric push rod 75 is fixedly arranged on the first sliding rail 71, and the output end of the first electric push rod 75 is fixedly connected with the second sliding rail 72. The second electric push rod 76 is fixedly arranged on the second sliding rail 72, and the output end of the second electric push rod 76 is fixedly connected with the sliding seat 73.
[0047] In a further embodiment, the second sliding rail 72 is ensured to stably slide in the X-axis direction by the first sliding rail 71, so as to realize accurate positioning of the laser range finder 6 in the X-axis direction. The sliding seat 73 is ensured to stably slide in the Y-axis direction by the second sliding rail 72, so as to realize accurate positioning of the laser range finder 6 in the Y-axis direction. The mounting plate 74 is ensured to stably rotate by the sliding seat 73, so as to realize measurement of the laser range finder 6 at multiple angles. The mounting plate 74 is rotatably arranged on the sliding seat 73, so that the laser range finder 6 can be measured at different angles, improving the flexibility and accuracy of measurement. The first electric push rod 75 drives the second sliding rail 72 to slide in the X-axis direction, so as to realize automatic positioning of the laser range finder 6 in the X-axis direction. The second electric push rod 76 drives the sliding seat 73 to slide in the Y-axis direction, so as to realize automatic positioning of the laser range finder 6 in the Y-axis direction.
[0048] Specifically, the positive and negative rotation motor 9 is fixedly arranged on the side of the sliding seat 73 away from the mounting plate 74, and the output end of the positive and negative rotation motor 9 is fixedly connected with the central shaft of the mounting plate 74.
[0049] In a further embodiment, the sliding seat 73 provides a rotation fulcrum for the mounting plate 74, and the positive and negative rotation motor 9 drives the mounting plate 74 to rotate in opposite directions, so as to realize rotation measurement of the laser range finder 6. Without moving the workpiece, the laser range finder 6 is rotated to realize multi-angle measurement, improving the flexibility and coverage of measurement.
[0050] In combination with the above content, the workflow and beneficial effects of the present application are as follows:
[0051] High-precision positioning and measurement: The first bidirectional screw 32 and the first motor 34 drive the limiting block 33 to ensure accurate positioning of the keyway body on the measuring table 1. The sliding design of the limiting block 33 ensures symmetrical limiting of the keyway body, preventing lateral shaking and achieving high-precision positioning. The arc-shaped strip design and the use of rubber pads 8 increase the contact area and friction force with the keyway body, ensuring the stability of the keyway body in the limiting block 33 and improving the accuracy and reliability of positioning. The second bidirectional screw 42 and the second motor 44 drive the clamping block 43 to achieve accurate clamping of the keyway body. The conical clamping block 43 design provides more accurate clamping force, which is concentrated at the center of the keyway body, improving the stability and accuracy of clamping.
[0052] Flexibility and multi-angle measurement: through the combination of the first sliding rail 71, the second sliding rail 72 and the sliding seat 73, the free sliding of the laser range finder 6 in the X, Y axis direction is realized, the various parts of the keyway can be covered, and comprehensive measurement data is provided; the positive and negative rotation motor 9 drives the rotating of the mounting plate 74, the measurement of the laser range finder 6 at different angles is realized, multi-angle measurement can be carried out without moving the workpiece, the flexibility and accuracy of measurement are improved.
[0053] Automatic adjustment and simple operation: the first electric push rod 75 and the second electric push rod 76 drive the second sliding rail 72 and the sliding seat 73 respectively, the automatic adjustment and positioning of the laser range finder 6 in the X, Y axis direction is realized, the human operation is reduced, and the operation efficiency and measurement accuracy are improved.
[0054] Stable clamping and center positioning: the limiting block 33 with arc-shaped long strip design provides a larger contact area, the rubber pad 8 increases the friction force, and the stable limiting of the keyway body is ensured; the conical design of the clamping block 43 provides accurate clamping force, the force is concentrated at the center position of the keyway body, and the stability of clamping and non-displacement or deformation in the measurement process is ensured.
[0055] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not the limitation of the utility model embodiments, for the ordinary skilled in the art, on the basis of the above description, other different forms of changes or changes can be made, all the embodiments cannot be exhausted here, any changes or changes derived from the technical scheme of the utility model still belong to the protection range of the utility model.
Claims
1. A keyway symmetry measuring device, characterized by, Include: The measuring table (1), the fixed seat (2) is arranged on the measuring table (1), the fixed seat (2) is arranged in cross shape, the fixed seat (2) is respectively provided with the positioning assembly (3) for limiting the key groove body and the clamping assembly (4) for fixing the key groove body; The measuring seat (5) is arranged on one side of the measuring table (1), the laser range finder (6) is arranged on the measuring seat (5), and the double-shaft sliding assembly (7) for controlling the measuring work of the laser range finder (6) is arranged between the laser range finder (6) and the measuring seat (5).
2. The keyway symmetry measuring device of claim 1, wherein: The first sliding groove (31) is longitudinally and symmetrically arranged in the middle of the fixed seat (2), the positioning assembly (3) comprises a first bidirectional screw (32) which is longitudinally arranged in the middle of the fixed seat (2), the limiting block (33) is symmetrically arranged in the first sliding groove (31), and the two limiting blocks (33) are symmetrically and threadedly connected to the first bidirectional screw (32), the first motor (34) is fixedly arranged on one side of the first bidirectional screw (32), and the output end of the first motor (34) is fixedly connected with the first bidirectional screw (32).
3. The keyway symmetry measuring device of claim 2, wherein: The end of the limiting block (33) outside the first sliding groove (31) is arranged in arc strip shape, and the rubber pad (8) is arranged on the inner side of the arc.
4. The keyway symmetry measuring device of claim 1, wherein: The second sliding groove (41) is symmetrically arranged in the middle of the fixed seat (2), the clamping assembly (4) comprises a second bidirectional screw (42) which is transversely arranged in the middle of the fixed seat (2), the clamping block (43) is slidably arranged in the middle of the second sliding groove (41), the two clamping blocks (43) are symmetrically and threadedly connected to the second bidirectional screw (42), the second motor (44) is fixedly arranged on one side of the second bidirectional screw (42), and the output end of the second motor (44) is fixedly connected with the second bidirectional screw (42).
5. The keyway symmetry measuring device of claim 4, wherein: The side adjacent to the two clamping blocks (43) is arranged in conical shape.
6. The keyway symmetry measuring device of claim 1, wherein: The double-shaft sliding assembly (7) comprises a first sliding rail (71) fixedly arranged on the measuring table (1), the second sliding rail (72) is slidably arranged on the first sliding rail (71), the slide seat (73) is slidably arranged in the middle of the second sliding rail (72), the mounting plate (74) is rotatably arranged on one side of the slide seat (73), and the laser range finder (6) is fixedly arranged on the mounting plate (74); The first electric push rod (75) is fixedly arranged on the first sliding rail (71), and the output end of the first electric push rod (75) is fixedly connected with the second sliding rail (72), the second electric push rod (76) is fixedly arranged on the second sliding rail (72), and the output end of the second electric push rod (76) is fixedly connected with the slide seat (73).
7. The keyway symmetry measuring device of claim 6, wherein: The positive and negative rotation motor (9) is fixedly arranged on the side of the slide seat (73) away from the mounting plate (74), and the output end of the positive and negative rotation motor (9) is fixedly connected with the central shaft of the mounting plate (74).