High-precision dial caliper gauge
By using ball splines and spring retaining ring structures in the meter gauges, the problems of complex measurement operations, large errors and workpiece damage in the prior art are solved, and the measurement effects of high accuracy, accuracy and safety are achieved.
Patent Information
- Application Number
- CN202421356044.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-06-14
AI Technical Summary
In the prior art, the measurement operation is complex, the error is large, and the workpiece may be damaged, making it difficult to meet the requirements of high-precision measurement.
A high-precision meter gauges are designed, and the ball spline structure is used to ensure transmission accuracy, and the measurement stroke is controlled through springs and retaining rings to ensure measurement accuracy and safety.
High-precision measurement is achieved, cumulative errors are reduced, measurement efficiency is improved, and the requirements for operator skill level are reduced, avoiding workpiece damage.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of measuring devices, in particular to a high-precision caliper gauge with a meter. Background Art
[0002] In mechanical processing, the diameters of many parts are measured mostly with general measuring tools such as micrometers and horseshoe calipers. In the manufacturing process, many parts have small tolerances and high precision, such as the crankshaft journal tolerance h6, which needs to go through four stages: roughing, semi-finishing, finishing, and super-finishing. The same nominal size, but different process sizes; if calipers are used for detection, calipers of different sizes are required, so there are many varieties of calipers; because calipers are used to measure parts, there is no specific size display, so there is a large change in the process allowance between semi-finishing and finishing, and the size after super-finishing also fluctuates, affecting product quality; calipers are frequently used in mass production and wear quickly (super-finishing wears one piece every 2-5 days). In order to avoid out-of-tolerance parts, calipers must be frequently detected, which requires a complex management procedure.
[0003] There are some shortcomings in using a micrometer for measurement: 1. When using a micrometer to measure the outer diameter, there will be a cumulative error, and the larger the diameter of the outer circle, the greater the cumulative error; 2. When using a micrometer for measurement, the measurement process is more cumbersome; 3. When using a micrometer for measurement, the operator's measurement skills are required to be high.
[0004] In the prior art, a lever-type dial caliper connects a lever and a body together, and measures the workpiece through elastic deformation of the lever. However, the deformation law will change after a period of use. The measuring stroke is small, so that the tolerance range of the workpiece that can be measured is very small. At the same time, excessive elastic force will leave marks on the workpiece surface. Utility Model Content
[0005] The utility model aims to provide a high-precision caliper gauge, which solves the technical problems of the prior art that the measuring operation is complicated, the measuring error is large and the workpiece may be damaged.
[0006] The technical solution adopted by the utility model to solve its technical problems is:
[0007] A high-precision caliper gauge with a dial comprises: a caliper gauge body, the caliper gauge body is a plate-like structure, the bottom of the caliper gauge body is provided with a penetrating measuring groove, the right side of the measuring groove is provided with a fixed probe, the measuring groove has a horizontal penetrating mounting hole on the side opposite to the fixed probe, a ball spline is installed at the right end of the mounting hole, the ball spline has a horizontally arranged spline shaft, the right end of the spline shaft is connected to a movable probe, the movable probe and the fixed probe are collinear and arranged facing each other, a clamping sleeve is provided on the left side of the mounting hole, a micrometer is fixed on the clamping sleeve, the left end of the spline shaft passes through the clamping sleeve and contacts with the probe of the micrometer, and the movable probe and the fixed probe are used for clamping a workpiece to be measured.
[0008] The utility model discloses a high-precision caliper gauge with a gauge. A spring is sleeved on a spline shaft between a gauge clamping sleeve and a ball spline. A retaining ring is fixedly installed on a side of the spline shaft close to the ball spline, and the retaining ring contacts the spring.
[0009] The utility model discloses a high-precision caliper gauge with a table. The top of the measuring groove is provided with a limit probe. The limit probe, the movable probe and the fixed probe are used to position the workpiece to be measured.
[0010] The utility model discloses a high-precision caliper gauge with a dial. The contact surfaces of the limit probe, the movable probe and the fixed probe with the workpiece to be measured are all provided with alloy inserts.
[0011] The utility model discloses a high-precision dial gauge. The micrometer is externally sleeved with a meter cover, and the meter cover is fixedly connected to the outer side of a meter clamping sleeve.
[0012] The utility model discloses a high-precision caliper with a dial. The upper part of the caliper body is provided with a penetrating grasping hole, and the grasping hole is used for operators to hold and move the caliper.
[0013] The utility model discloses a high-precision caliper gauge with a dial, wherein a grip is installed on the upper edge of the grabbing hole.
[0014] The utility model discloses a high-precision dial caliper. A positioning screw is provided on a caliper body to fix a ball spline.
[0015] The beneficial effects of the utility model are as follows: a high-precision dial caliper is proposed, and a ball spline is arranged so that a movable probe has a certain avoidance space when a workpiece to be measured is installed; and the transmission part adopts a ball spline structure, because it is a slight interference fit, there is no gap in movement, thereby ensuring the accuracy of the transmission accuracy; the measuring stroke is controlled by a spring and a retaining ring, the measuring stroke is large, and the measuring force is constant, the workpiece is not damaged, and the defects of the elastic body structure are solved; when in use, it is only necessary to use a calibration piece to zero the micrometer of the dial caliper; then measure the workpiece to be measured, convert the indication of the micrometer and the actual measured value of the calibration piece, and the actual value of the diameter of the measured workpiece can be obtained, the measuring efficiency is high, the accuracy of the measuring result is greatly improved, the requirement for the measuring skill level of the operator is reduced, and the workpiece diameter is measured by the principle of comparative measurement, thereby reducing the cumulative error. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:
[0017] Figure 1 It is a schematic diagram of an embodiment of the utility model;
[0018] Figure 2 It is a top view of an embodiment of the utility model;
[0019] Figure 3 It is an axonometric diagram of an embodiment of the utility model;
[0020] Figure 4 It is a schematic diagram of a calibration piece according to an embodiment of the utility model;
[0021] Figure 5 It is a schematic diagram of the calibration state of an embodiment of the utility model;
[0022] Figure 6 It is a schematic diagram of the measurement state of an embodiment of the utility model. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0024] like Figure 1-6As shown, a high-precision caliper with a dial comprises: a caliper body 1, the caliper body 1 is a plate-like structure, the bottom of the caliper body 1 is provided with a penetrating measuring groove 2, the right side of the measuring groove 2 is provided with a fixed probe 3, the measuring groove 2 is provided with a horizontal penetrating mounting hole 17 on the side opposite to the fixed probe 3, a ball spline 6 is installed at the right end of the mounting hole 17, the ball spline 6 has a horizontally arranged spline shaft 5, the right end of the spline shaft 5 is connected with a movable probe 4, the movable probe 4 and the fixed probe 3 are collinear and arranged facing each other, a clamping sleeve 9 is assembled on the left side of the mounting hole 17, a micrometer 10 is fixed on the clamping sleeve 9, the left end of the spline shaft 5 passes through the clamping sleeve 9 and contacts with the probe of the micrometer 10, and a workpiece 16 to be measured is clamped between the movable probe 4 and the fixed probe 3.
[0025] Among them, the spline shaft 5 is connected to the middle part of the ball spline 6 through the hole axis, so the movable probe 4 can reciprocate in the ball spline 6. Because the ball spline 6 uses the balls installed in the spline to roll smoothly in the precision-ground rolling groove at the same time, and because it is a slight interference fit, there is no gap in the movement, thereby ensuring the accuracy of the transmission precision of the movable probe 4. The clamping cover 9 is installed on the base side of the mounting hole 17. The dial gauge can be positioned and locked in the clamping cover by clamping the gauge. The clamp is installed at the front end of the clamping cover. The dial gauge can be positioned and locked in the clamping cover by tightening the screw.
[0026] As a preferred embodiment, a spring 8 is sleeved on the spline shaft 5 between the clamping sleeve 9 and the ball spline 6 , and a retaining ring 7 is fixedly installed on the side of the spline shaft 5 close to the ball spline 6 , and the retaining ring 7 is in contact with the spring 8 .
[0027] The spline shaft 5 is provided with an annular groove for installing a retaining ring 7; the right end of the spline shaft 5 is installed in the positioning hole of the movable probe and fixed, and the retaining ring 7 is installed on the spline shaft inside the ball spline to limit the expansion and contraction amount of the spring and control the moving range of the movable probe.
[0028] As a preferred embodiment, a limit probe 12 is provided on the top of the measuring groove 2. The limit probe 12, the movable probe 4 and the fixed probe 3 are used to position the workpiece 16 to be measured. Generally, they are installed on the upper left side below the measuring groove 2 of the caliper body.
[0029] As a preferred embodiment, the contact surfaces of the limit probe 12 , the movable probe 4 , and the fixed probe 3 with the workpiece 16 to be measured are all provided with alloy inserts 15 .
[0030] As a preferred embodiment, the micrometer 10 is externally provided with a protective cover 11, which is fixedly connected to the outside of the clamping sleeve 9. The protective cover 11 is installed on the outside of the clamping sleeve and fixed by screws to protect the micrometer.
[0031] As a preferred embodiment, the upper portion of the caliper body 1 has a penetrating grasping hole 13, and the grasping hole 13 is provided for an operator to move by hand.
[0032] As a preferred embodiment, the handle 14 installed on the upper edge of the grab hole 13 is usually made of non-metallic material and installed at the grip above the caliper body to increase heat insulation performance and grip comfort.
[0033] As a preferred embodiment, the caliper body 1 is provided with a positioning screw 18 to fix the ball spline 6. The positioning screw 18 is installed in a screw hole below the caliper body and fixed in a keyway of the ball spline outer cylinder to limit the position of the ball spline in the caliper body.
[0034] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0035] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, in the description of the present utility model, unless otherwise specified, "plurality" means two or more.
[0036] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.
Claims
1. A high-precision caliper gauge, characterized in that: include: A caliper body (1) is provided, wherein the caliper body (1) is in a plate-like structure, and the bottom of the caliper body (1) is provided with a through measuring groove (2), and the right side of the measuring groove (2) is provided with a fixed probe (3), and the measuring groove (2) has a horizontal through mounting hole (17) on the side opposite to the fixed probe (3), and a ball spline (6) is installed at the right end of the mounting hole (17), and the ball spline (6) has a horizontally arranged spline shaft (5), and the right end of the spline shaft (5) is connected with a movable probe (4), and the movable probe (4) and the fixed probe (3) are collinear and arranged facing each other, and a clamping sleeve (9) is provided on the left side of the mounting hole (17), and a micrometer (10) is fixed on the clamping sleeve (9), and the left end of the spline shaft (5) passes through the clamping sleeve (9) and contacts with the probe of the micrometer (10), and a workpiece (16) to be measured is clamped between the movable probe (4) and the fixed probe (3).
2. A high-precision caliper gauge according to claim 1, characterized in that: A spring (8) is sleeved on the spline shaft (5) between the clamping sleeve (9) and the ball spline (6), and a retaining ring (7) is fixedly mounted on the side of the spline shaft (5) close to the ball spline (6), and the retaining ring (7) is in contact with the spring (8).
3. A high-precision caliper gauge according to claim 2, characterized in that: The top of the measuring groove (2) is provided with a limit probe (12), and the limit probe (12), the movable probe (4) and the fixed probe (3) are used to position the workpiece (16) to be measured.
4. A high-precision caliper gauge according to claim 3, characterized in that: Alloy inserts (15) are provided on the contact surfaces of the limit probe (12), the movable probe (4) and the fixed probe (3) with the workpiece (16) to be measured.
5. A high-precision caliper gauge according to claim 2, characterized in that: The dial gauge (10) is externally sleeved with a meter cover (11), and the meter cover (11) is fixedly connected to the outer side of the meter clamping sleeve (9).
6. A high-precision caliper gauge according to claim 2, characterized in that: The upper part of the caliper body (1) is provided with a penetrating grasping hole (13), and the grasping hole (13) is provided for an operator to move the caliper by hand.
7. A high-precision caliper gauge according to claim 6, characterized in that: A handle (14) is mounted on the upper edge of the grabbing hole (13).
8. The high-precision caliper gauge according to claim 2, characterized in that: The caliper body (1) is provided with a positioning screw (18) for fixing the ball spline (6).