Sleeve gauge for detecting outer diameter

Abstract

The utility model relates to an external diameter detection socket gauge, which comprises a socket gauge seat, a measuring column, a movable measuring rod, an inner measuring rod, an ejector rod, a pointer meter and a movable measuring rod seat, an ejector rod fixing seat is arranged in the center of the upper surface of the socket gauge seat; an ejector rod is movably arranged in the ejector rod fixing seat; the top rod is sleeved with a meter rod in a threaded mode. A pointer meter penetrates through the meter rod; a measuring head of the pointer meter is contacted with the upper surface of the ejector rod; an inner hole with a downward opening is formed in the lower end of the socket gauge seat; two movable measuring rod seats are symmetrically arranged on the circumferential outer side of the socket gauge seat; a vertical groove is formed in the movable measuring rod seat; a movable measuring rod is vertically arranged in the groove; measuring columns are arranged at the lower ends of the movable measuring rods; the measuring column can extend into the inner hole; two inner measuring rods are arranged in the socket gauge seat and between the two movable measuring rod seats; a first spring is arranged between the two inner measuring rods; one end of the inner measuring rod deviating from the spring contacts with the upper end side wall of the movable measuring rod. A conical surface is arranged at the lower end of the ejector rod; and the conical surface is in contact with the end parts of the two inner measuring rods in the circumferential direction. The socket gauge is simple in structure and convenient to detect.

Description

Technical Field

[0001] The utility model relates to the technical field of machining inspection tools, in particular to an outer diameter gauge for detection. Background Art

[0002] The dimensional accuracy requirements for the outer diameter of hub products are very high. Factors such as their material, tooling fixture, machine tool spindle, turning tool, and their cutting parameters will all affect the outer diameter dimension, resulting in continuous fluctuations in its dimensional value. When the change is large, it will exceed the tolerance. Therefore, during the machining process, in order to cope with the fluctuating dimensional value, first, it is necessary to determine the difference between the specific dimensional value and the ideal dimensional value, that is, the compensation value. Then, the compensation value is input into the numerical control machine tool, and by using the compensation machining function of the numerical control machine tool, finally, the outer diameter dimensions of the hub products can all meet the requirements, thereby avoiding the occurrence of defective products. Currently, during the machining process, an outside micrometer is mainly used for detection. Although this can measure the specific dimensional value, due to the high skill requirements for its use, it is very difficult for general operators to measure accurate values. As a result, the dimensional compensation value provided to the numerical control machine tool is prone to errors. Since its outer diameter dimension has high accuracy and a very small tolerance zone, even a slight mistake will result in defective products. In addition, there are also those using a go-no-go gauge. When the go gauge can be inserted and the no-go gauge cannot be inserted, it is determined to be qualified. Although such a detection method is simple, fast, and effective, and has low skill requirements for use, it is not suitable for use during the machining process. The main reason is that it cannot provide accurate measurement values, and thus cannot determine the compensation value of the outer diameter dimension, nor can it guide the subsequent machining of hub products. The above problems have been plaguing machining manufacturers, lacking practical and effective solutions. Content of the Utility Model

[0003] The present utility model mainly solves the technical problems such as difficult operation and large error in the prior art. For this purpose, a detecting outer diameter gauge is designed. The bottom surface of the inner hole of the gauge seat is surface-positioned with the top surface of the outer diameter of the hub product, which makes the two measuring posts at the same height and provides guarantee for the accurate measurement of the outer diameter dimension. The measuring posts are arranged at the lower end of the movable measuring rod. The movable measuring rod can rotate. Its upper end contacts with the inner measuring rod, the other end of the inner measuring rod contacts with the ejector rod, and the ejector rod contacts with the measuring head of the dial indicator. When the gauge seat is sleeved on the outer diameter of the hub product and accurately surface-positioned, the two measuring posts will contact with the outer diameter. During this process, the measuring posts will move outwards as they contact with the outer diameter, that is, the lower end of the movable measuring rod moves outwards. Since the movable measuring rod can rotate around the cylindrical pin inserted through the middle part, its upper end will move inwards, pushing the two inner measuring rods to move inwards simultaneously. Through the action of the conical surface at the lower end of the ejector rod, the inner measuring rod will make the ejector rod move upwards. Then the ejector rod pushes the measuring head of the dial indicator to move upwards, so that the specific detection value of the outer diameter dimension of the hub product can be read. This gauge is especially suitable for the detection during the processing, especially when the hub product is not unloaded from the machine tool after processing. When the outer diameter dimension is too large and unqualified, the compensation value can be obtained through calculation. By using the compensation processing function of the numerical control machine tool, it is very easy to process the hub product qualified. The whole process is convenient, fast and accurate, with obvious advantages. This gauge can be applied to most similar occasions, can be widely used, and can fundamentally solve the above-mentioned problems.

[0004] A detecting outer diameter gauge of the present utility model mainly consists of a gauge seat, a movable measuring rod seat, a movable measuring rod, measuring posts, inner measuring rods, an ejector rod fixing seat, an ejector rod, a gauge rod, a measuring head, a dial indicator, a handle, a calibration part, etc. The overall gauge seat adopts a weight reduction design with multiple hollow-outs and thin walls, which is easy to pick up and can be applied to the detection in various occasions such as horizontal processing, vertical processing, inverted vertical processing, and on the detection table of hub products. Hold the two handles with both hands and directly sleeve them on the outer diameter of the hub product for detection. The operation is simple, greatly reducing the requirements for the detection skills of the operator. The detection process is not only fast but also very accurate, and the value can be read, which is beneficial for the operator to carry out compensation processing in time when needed. By using this gauge, the processing qualification rate is significantly improved, and at the same time, the guarantee ability of the processing process is also improved. It is a very preferred solution.

[0005] The technical solution of the present utility model is realized as follows: The gauge seat is the main body, which plays a role in positioning the gauge and the hub product. This is very crucial. If the positioning is inaccurate, the read value will be wrong, which will mislead the operator and ultimately produce defective products. In addition, two symmetrically positioned movable measuring rod seats, ejector rod fixing seats, handles and other components are arranged on it. Therefore, the machining accuracy of each mounting surface and hole and the positional tolerance between them are of high-precision level, providing guarantee for the accurate detection of this gauge.

[0006] A concave groove is provided in the middle part of the dynamic measurement rod seat. A cylindrical pin is horizontally arranged in the groove, and a dynamic measurement rod is vertically arranged. The cylindrical pin passes through the dynamic measurement rod, and the dynamic measurement rod can rotate around the cylindrical pin. There is a measuring post at the lower end of the dynamic measurement rod, which contacts the inner measurement rod at the upper end, and a spring is provided, which enables gapless transmission between the components. The two dynamic measurement rod seats are symmetrically arranged about the center of the gauge seat, and the above movable components all move symmetrically simultaneously, which is also one of the keys to the accurate detection of this set of gauges.

[0007] The ejector rod fixed seat is arranged at the center of the gauge seat. An ejector rod and a guide sleeve are arranged in its center, which ensures that the ejector rod can slide up and down freely and is on the same central axis as the probe and the measuring rod of the dial indicator. The lower end of the ejector rod is conical, and the conical surface contacts the two inner measuring rods. At the same time, a spring is also provided, which enables gapless transmission between the components. A dial rod is screwed on the upper surface of the fixed seat, and a dial indicator is arranged inside the dial rod. The probe of the dial indicator contacts the top surface of the ejector rod. When the two inner measuring rods move inward simultaneously, under the conduction of the conical surface, the ejector rod moves upward, thereby driving the probe of the dial indicator to move upward, and then causing the pointer on the dial of the dial indicator to rotate. At this time, the detection value of the outer diameter of the hub product can be read.

[0008] The calibration part is the benchmark of this set of gauges. It must be calibrated before use and also frequently during use to avoid losing the calibrated state due to reasons such as collision and accidentally moving the dial indicator. The machining accuracy of the outer diameter and the top surface of the calibration part is at the micron level. Only high precision can truly play the role of calibration.

[0009] The utility model provides an outer diameter gauge for detection, including: a gauge seat, a measuring post, a dynamic measurement rod, an inner measurement rod, an ejector rod, a dial indicator, and a dynamic measurement rod seat;

[0010] The gauge seat is in the shape of a disc; a top rod fixed seat is arranged at the center position of the upper surface of the gauge seat; the top rod is movably arranged in the top rod fixed seat; a dial rod is threadedly sleeved on the top rod; a dial indicator is arranged inside the dial rod; the probe of the dial indicator contacts the upper surface of the top rod;

[0011] The lower end of the gauge seat is provided with a downward-opening inner hole; two dynamic measurement rod seats are symmetrically arranged on the circumferential outer side of the gauge seat; a vertical groove is arranged inside the dynamic measurement rod seat; a dynamic measurement rod is vertically arranged in the groove; a measuring post is arranged at the lower end of the dynamic measurement rod; the measuring post can extend into the inner hole; two inner measurement rods are arranged between the two dynamic measurement rod seats inside the gauge seat; a first spring is arranged between the two inner measurement rods; the end of the inner measurement rod away from the spring contacts the side wall of the upper end of the dynamic measurement rod;

[0012] The lower end of the ejector rod is provided with a conical surface; the conical surface circumferentially contacts the ends of the two inner measurement rods respectively.

[0013] Further, two handles are symmetrically arranged on the upper surface of the gauge seat.

[0014] Further, an anti-slip sleeve is sleeved on the handle.

[0015] Further, a guide sleeve is arranged between the ejector rod and the ejector rod fixing seat.

[0016] Further, the middle part of the moving measuring rod is arranged in the moving measuring rod seat through a cylindrical pin; the moving measuring rod can rotate around the cylindrical pin.

[0017] Further, a protrusion is circumferentially arranged on the upper part of the ejector rod; the protrusion can be stuck on the limiting surface in the middle of the ejector rod fixing seat.

[0018] Further, a second spring is arranged between the protrusion and the lower end of the dial rod.

[0019] Further, a boss is circumferentially arranged at the top of the inner hole; the lower surface of the boss can contact the top surface of the outer diameter of the workpiece.

[0020] Compared with the prior art, the outer diameter gauge provided by the present utility model has the following advantages:

[0021] 1. The structure of the present utility model is simple. During detection, the bottom surface of the inner hole of the gauge seat is used for surface positioning with the top surface of the outer diameter of the hub product, which makes the two measuring columns at the same height and provides guarantee for accurate measurement of the outer diameter size. When the hub product is not unloaded from the machine tool after processing, this gauge is used in time. When the outer diameter size is too large and unqualified, the compensation value can be obtained through calculation. By using the compensation processing function of the numerical control machine tool, it is very easy to process the hub product qualified. The whole process is convenient, fast and accurate.

[0022] 2. When the present utility model is used for detection, hold the two handles with both hands and directly sleeved them on the outer diameter of the hub product for detection. The operation is simple, which greatly reduces the requirements for the detection skills of the operators. The detection process is not only fast, but also very accurate, and the value can be read, which is beneficial for the operators to carry out compensation processing in time when needed. By using this gauge, the processing qualification rate is significantly improved, and at the same time, the guarantee ability of the processing process is also improved.

[0023] 3. The gauge of the present utility model is not limited to the detection of the outer diameter of the hub product, but also suitable for the detection of other similar outer diameters, with strong versatility. Brief Description of the Drawings

[0024] Figure 1 is the overall schematic diagram of the gauge of the present utility model for detecting the hub product.

[0025] Figure 2 is the structural schematic diagram of the gauge of the present utility model.

[0026] Figure 3It is a schematic cross-sectional view of the gauge of the present utility model.

[0027] Figure 4 It is the front view of the hub product of the present utility model.

[0028] Figure 5 It is a schematic cross-sectional view of the calibration part of the present utility model.

[0029] Reference numerals: 1, handle; 2, gauge base; 3, inner hole; 4, outer diameter of calibration part; 5, lower surface of convex platform; 6, top surface; 7, measuring post; 8, movable measuring rod; 9, cylindrical pin; 10, inner measuring rod; 11, ejector rod; 12, conical surface; 13, dial indicator; 14, measuring head; 15, outer diameter of hub; 16, top surface; 17, movable measuring rod seat; 18, ejector rod fixing seat; 19, meter rod. Specific embodiments

[0030] To make the technical problems solved by the present utility model, the technical solutions adopted and the achieved technical effects clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the sake of description, only the parts related to the present utility model are shown in the drawings, rather than all the content.

[0031] As Figure 1 shown, a kind of outer diameter detecting gauge provided by an embodiment of the present utility model includes: a gauge base 2, a measuring post 7, a movable measuring rod 8, an inner measuring rod 10, an ejector rod 11, a dial indicator 13 and a movable measuring rod seat 17;

[0032] The gauge base 2 is in the shape of a disc; a top rod fixing seat 18 is arranged at the center of the upper surface of the gauge base 2; the ejector rod 11 is movably arranged in the top rod fixing seat 18; a meter rod 19 is threadedly sleeved on the ejector rod 11; the dial indicator 13 is inserted into the meter rod 19; the measuring head 14 of the dial indicator 13 contacts the upper surface of the ejector rod 11;

[0033] Two handles are symmetrically arranged on the upper surface of the gauge base 2. An anti-slip sleeve is sleeved on the handle 1.

[0034] The lower end of the gauge base 2 is provided with an inner hole 3 opening downward; a convex platform is circumferentially arranged at the top of the inner hole 3; the lower surface 5 of the convex platform can contact the top surface 16 of the outer diameter of the workpiece. Multiple hollow parts are arranged on the gauge base 2, and the multiple hollow parts are communicated with the inner hole 3, reducing the weight of the gauge and enabling it to be applicable to the detection in various occasions such as horizontal machining, vertical machining, inverted vertical machining, and detection tables of hub products.

[0035] Two dynamic measuring rod seats 17 are symmetrically arranged on the outer side of the circumference of the gauge seat 2; a vertical groove is arranged in the dynamic measuring rod seat 17; a dynamic measuring rod 8 is vertically arranged in the groove; a measuring column 7 is arranged at the lower end of the dynamic measuring rod 8; the measuring column 7 can extend into the inner hole 3; two inner measuring rods 10 are arranged inside the gauge seat 2 and between the two dynamic measuring rod seats 17; a first spring is arranged between the two inner measuring rods 10; one end of the inner measuring rod 10 facing away from the spring contacts with the upper side wall of the dynamic measuring rod 8; the middle part of the dynamic measuring rod 8 is arranged in the dynamic measuring rod seat 17 through a cylindrical pin 9; the dynamic measuring rod 8 can rotate around the cylindrical pin 9.

[0036] A conical surface 12 is provided at the lower end of the push rod 11; the conical surface 12 is in contact with the ends of the two inner measuring rods 10 in the circumferential direction.

[0037] A guide sleeve is arranged between the push rod 11 and the push rod fixing seat 18. A protrusion is arranged circumferentially on the upper part of the push rod 11; the protrusion can be stuck on the limiting surface in the middle part of the push rod fixing seat 18. A second spring is arranged between the protrusion and the lower end of the meter rod 19.

[0038] This paper uses a new working process: Figure 5 As shown, first, place the calibration piece flat on the inspection platform, then hold the two handles 1 of the gauge with both hands, insert the inner hole 3 of the gauge seat 2 into the outer diameter 4 of the calibration piece and move it downward until the lower surface 5 of the boss and the top surface 6 of the outer diameter 4 of the calibration piece are in contact and completely fit and positioned. In this process, the two measuring columns 7 will move outward as they contact the outer diameter 4, that is, the lower end of the dynamic measuring rod 8 moves outward, and a cylindrical pin 9 is inserted in the middle of the upper and lower ends of the dynamic measuring rod 8. The dynamic measuring rod 8 can rotate around the cylindrical pin 9. At this time, its upper end will move inward with the same displacement, pushing the two inner measuring rods 10 to move inward at the same time. The inner measuring rod 10 will move upward twice the movement of the measuring column through the 1:2 conical surface 12 at the lower end of the push rod 11, and then the push rod pushes the probe 14 of the pointer meter 13 to move upward, thereby causing the pointer on the pointer dial to rotate, and then the pointer dial is rotated to align the zero point position with the pointer, so that the calibration of this gauge set is completed.

[0039] After the hub product is machined on a dedicated numerical control machine tool, the outer diameter 15 to be detected of the hub product is in a downward state at this time, the dedicated numerical control machine tool is in a stopped machining state, the working door is automatically opened, and the safety light curtain is automatically turned on. Then, hold the two handles 1 of the sleeve gauge with both hands, insert the inner hole 3 of the sleeve gauge seat into the outer diameter 15 of the hub product and move it upward until the lower surface 5 of the convex platform is in contact with and completely fits and positions the top surface 16 of the outer diameter of the hub product. During this process, the transmission of the measuring column 7 of the sleeve gauge and other transmission components is the same as described above, and the value on the pointer dial can be directly read. Since the outer diameter of the hub product is not an absolute circle and the outer diameter sizes at different angles are different, it is necessary to rotate this sleeve gauge at least half a turn, pay attention to the change of the pointer value, and select the average value as the detection value of the outer diameter. If the current detection value exceeds the lower limit deviation value of the outer diameter size tolerance, the profile product will be directly scrapped. If it exceeds the upper limit deviation value of the outer diameter size tolerance, the compensation value will be calculated in combination with the theoretical value of the outer diameter size and input into the dedicated numerical control machine tool to start compensation machining. After the machining is completed, repeat the above detection operation until the detection is qualified, and then unload the hub product.

[0040] After the next hub product is machined, repeat the above steps.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: modifying the technical solutions described in the foregoing embodiments, or equivalently replacing some or all of the technical features therein, does not deviate from the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gauge for detecting outer diameter, characterized in that: include: A gauge seat (2), a measuring column (7), a dynamic measuring rod (8), an inner measuring rod (10), a push rod (11), a pointer gauge (13) and a dynamic measuring rod seat (17); The gauge seat (2) is in the shape of a disk; a push rod fixing seat (18) is arranged at the center position of the upper surface of the gauge seat (2); a push rod (11) is movably arranged in the push rod fixing seat (18); a gauge rod (19) is threadedly sleeved on the push rod (11); a pointer gauge (13) is inserted in the gauge rod (19); a probe (14) of the pointer gauge (13) contacts the upper surface of the push rod (11); An inner hole (3) opening downward is arranged at the lower end of the gauge seat (2); two dynamic measuring rod seats (17) are symmetrically arranged on the outer side of the gauge seat (2); a vertical groove is arranged in the dynamic measuring rod seat (17); a dynamic measuring rod (8) is arranged vertically in the groove; a measuring column (7) is arranged at the lower end of the dynamic measuring rod (8); the measuring column (7) can extend into the inner hole (3); two inner measuring rods (10) are arranged inside the gauge seat (2) and between the two dynamic measuring rod seats (17); a first spring is arranged between the two inner measuring rods (10); one end of the inner measuring rod (10) facing away from the spring contacts the side wall of the upper end of the dynamic measuring rod (8); A conical surface (12) is provided at the lower end of the push rod (11); the conical surface (12) is in contact with the ends of the two inner measuring rods (10) in the circumferential direction.

2. The outer diameter detection sleeve gauge according to claim 1 is characterized in that: Two handles (1) are symmetrically arranged on the upper surface of the gauge seat (2).

3. The outer diameter detection sleeve gauge according to claim 2 is characterized in that: The handle (1) is sleeved with an anti-slip sleeve.

4. The outer diameter detection sleeve gauge according to claim 1 is characterized in that: A guide sleeve is arranged between the push rod (11) and the push rod fixing seat (18).

5. The outer diameter detection sleeve gauge according to claim 1 is characterized in that: The middle part of the dynamic measuring rod (8) is arranged in the dynamic measuring rod seat (17) through a cylindrical pin (9); the dynamic measuring rod (8) can rotate around the cylindrical pin (9).

6. The outer diameter detection sleeve gauge according to claim 1 is characterized in that: A protrusion is circumferentially arranged on the upper part of the push rod (11); the protrusion can be clamped on the limiting surface in the middle part of the push rod fixing seat (18).

7. The outer diameter detection sleeve gauge according to claim 6 is characterized in that: A second spring is arranged between the protrusion and the lower end of the meter rod (19).

8. The outer diameter detection sleeve gauge according to claim 1 is characterized in that: A boss is circumferentially arranged at the top of the inner hole (3); the lower surface (5) of the boss can contact the top surface (16) of the outer diameter of the workpiece.

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