Expansion spring type inner diameter meter

Abstract

The utility model discloses an expansion spring type inner diameter meter, and relates to the technical field of measuring equipment. The expansion spring type internal diameter meter comprises an internal diameter meter main body, the internal diameter meter main body comprises an expansion spring measuring head, the external side of the internal diameter meter main body is slidably sleeved with a limiting piece, the limiting piece is used for compressing or loosening the expansion spring measuring head, and when the limiting piece is sleeved on the expansion spring measuring head, the expansion spring measuring head is in a measuring state at a first set value; the first set value is smaller than the maximum value in the measurement range values. The measurement process does not need personnel to assist in hole entering, operation is simple and convenient, and measurement efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of measuring equipment, and in particular relates to a spring-tensioned inner diameter gauge. Background Art

[0002] The front end of the spring probe of the common spring-type internal diameter measuring gauge is a protruding cylindrical structure. Based on its measurement principle, the diameter of the probe in the expanded state is larger than the diameter of the measured object. When using a spring-type internal diameter micrometer to measure the diameter of a deep hole, it is generally necessary to manually compress the probe from the expanded state so that the probe can be smoothly inserted into the deep hole. Especially when the deep hole port is "closed" due to welding and other reasons, if the probe is not manually compressed, the internal diameter measuring gauge cannot be freely inserted into the deep hole. If the two hands are not coordinated well, it is easy to "stuck", affecting the measurement efficiency. Utility Model Content

[0003] The utility model provides a spring expansion type inner diameter gauge, which is used to solve the problem of how to release the manual compression of the gauge head and improve the measurement efficiency.

[0004] The embodiments of the present invention are implemented by the following technical solutions:

[0005] A tension spring type internal diameter gauge includes an internal diameter gauge body, the internal diameter gauge body includes a tension spring probe, a limit piece is provided on the outer sliding sleeve of the internal diameter gauge body, the limit piece is used to compress or release the tension spring probe, when the limit piece is sleeved on the tension spring probe, the tension spring probe is in a measuring state of a first set value, and the first set value is less than the maximum value in the measuring range value.

[0006] This design method uses the setting of limit pieces, so that the spring-tension probe of the spring-tension inner diameter gauge can be quickly and neatly compressed before measurement, avoiding the "stuck" phenomenon caused by the lack of coordination between the two hands during measurement, making the measurement more convenient and improving the measurement efficiency to a certain extent.

[0007] In some technical solutions of the present utility model, the above-mentioned first set value is the minimum value in the measurement range value.

[0008] This design method enables the spring-tensioned internal diameter gauge to achieve consistency between the actual measuring range and the theoretical measuring range without wearing the spring-tensioned probe.

[0009] In some technical solutions of the present utility model, a control component is provided on the outer side of the inner diameter gauge body, and the control component is used to drive the limiter to reciprocate along the axial direction of the inner diameter gauge body.

[0010] This design method is a semi-automatic measurement method, which makes it more convenient for personnel to measure the aperture.

[0011] In some technical solutions of the present utility model, the above control component is fixedly arranged on the outer side of the above inside diameter gauge body.

[0012] This design method can make the control component and the inside diameter gauge body more firm.

[0013] In some technical solutions of the present utility model, the above control component includes a fixing piece arranged on the outer side of the above inside diameter gauge body. An elastic piece is arranged between the fixing piece and the above limiting piece. When the limiting piece is sleeved on the above expansion spring probe, the elastic piece is in an initial state. When the limiting piece releases the expansion spring probe, the elastic piece is in a contracted state.

[0014] The expansion spring type inside diameter gauge in this design method only needs a pressure acting on the inside diameter gauge body to complete the measurement. When the pressure applied on the inside diameter gauge body is removed, the expansion spring type inside diameter gauge returns to the initial measurement state, and the measurement efficiency is further improved.

[0015] In some technical solutions of the present utility model, the above elastic piece is a spring.

[0016] The spring has good elasticity, and the restoring force is stable and reliable, not easily affected by external factors. It can store a large amount of elastic potential energy during the deformation process, and this energy can be quickly released when needed.

[0017] In some technical solutions of the present utility model, a flexible protective sleeve is arranged between the above fixing piece and the above elastic piece, and the flexible protective sleeve is spacedly sleeved on the outer side of the above spring.

[0018] The flexible protective sleeve can play a protective role for the spring and avoid the spring from being polluted.

[0019] In some technical solutions of the present utility model, the above limiting piece is penetrated with a limiting hole, and the limiting piece is provided with an inner chamfer. The inner chamfer extends from the edge of the limiting hole on the side of the limiting piece away from the fixing piece towards the central axis direction of the limiting piece, forming a smooth transition surface.

[0020] This design method reduces the possibility of collision when the expansion spring probe enters the limiting piece, and improves the safety and stability of the expansion spring probe; it should be noted that the limiting piece preferably uses an annular piece.

[0021] In some technical solutions of the present utility model, the shape of the above inner chamfer is arc-shaped.

[0022] This design method can, to a certain extent, prevent the expansion spring probe from being directly pulled into the limiting piece, play a role in protecting the expansion spring probe, and thus improve its service life.

[0023] The technical solutions of the present utility model at least have the following advantages and beneficial effects:

[0024] A limiting member is slidably sleeved outside the inner diameter gauge body, replacing the two hands of the measurer pressing the expansion spring probe, reducing the "jamming" phenomenon caused by the incoordination of the two hands at the initial stage of measurement, and thus improving the measurement efficiency. Description of the Drawings

[0025] Figure 1 It is a schematic diagram of a dial-type internal diameter gauge in a ready-to-measure state in an embodiment of the present application;

[0026] Figure 2 It is a schematic diagram of a dial-type internal diameter gauge in a measuring state in an embodiment of the present application.

[0027] Reference numerals: 1 - inner diameter gauge body, 2 - expansion spring probe, 3 - limiting member, 4 - fixing member, 5 - spring, 6 - flexible protective sleeve, 7 - limiting hole, 8 - inner chamfer, 9 - object to be measured. Detailed Description of the Embodiment

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model claimed, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0030] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0031] In the description of the present utility model, it should be noted that if terms such as "inner" and "outer" are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present utility model.

[0032] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "configure", and "connect" 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 an indirect connection 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 invention can be understood according to specific circumstances.

[0033] Example

[0034] Please refer to Figure 1-2 The present embodiment provides a tension spring type internal diameter gauge, including an internal diameter gauge body 1, the internal diameter gauge body 1 including a tension spring probe 2, a limit member 3 is provided on the outer sliding sleeve of the internal diameter gauge body 1, the limit member 3 is used to compress or release the tension spring probe 2, when the limit member 3 is sleeved on the tension spring probe 2, the tension spring probe 2 is in a measuring state of a first set value, and the first set value is less than the maximum value in the measuring range value.

[0035] The principle of the spring-type internal diameter gauge is as follows: personnel can select first set values ​​of different specifications according to actual needs. It is worth noting that the first set value corresponding to the selected spring-type internal diameter gauge needs to be smaller than the caliber of the target hole of the object 9 to be measured (or the caliber value of the "closing" of the target hole); when measuring the internal diameter, first place the spring-type internal diameter gauge above the target hole of the object 9 to be measured, so that the spring probe 2 of the spring-type internal diameter micrometer is aligned with the target hole of the object 9 to be measured, and the spring-type internal diameter gauge moves downward as a whole, and stops moving downward when the limit member 3 is in contact with the object surface where the target hole of the object 9 to be measured is located, and then the main body 1 of the internal diameter gauge moves downward and aligns with the object to be measured. The limiter 3 that fits the target hole of the measured object 9 is blocked and remains motionless, and the inner diameter gauge body 1 that has a sliding relationship with the limiter 3 continues to drop, and the spring-tensioned probe 2 slides relative to the limiter 3, gradually detaches from the limiter 3 and enters the target hole to start measuring. At this time, the spring-tensioned probe 2 is not restricted by the limiter 3 and is in a free measurement state; when the measurement is completed, the limiter 3 remains motionless (manual pressing can be used), and the inner diameter gauge body 1 that has a sliding position relationship with the limiter 3 is pulled up, and the spring-tensioned probe 2 slides relative to the limiter 3, gradually detaches from the target hole and enters the limiter 3, and the measurement is completed. This design method uses the setting of the limiter 3, so that the spring-tensioned inner diameter gauge can quickly and neatly compress its spring-tensioned probe 2 before measuring, avoiding the "stuck" phenomenon caused by the lack of tacit cooperation between the two hands during measurement, making the measurement more convenient and improving the measurement efficiency to a certain extent.

[0036] As a preferred implementation, the first set value is the minimum value in the measurement range.

[0037] In the above embodiment, the first set value being the minimum value in the measurement range means that the expansion spring probe 2 of the expansion spring type internal diameter gauge is in the minimum measurement state at the initial position, enabling it to smoothly enter the orifice with a target diameter value close to the minimum range, so that the expansion spring type internal diameter gauge can achieve the consistency between the actual measurement range and the theoretical measurement range without wearing the expansion spring probe 2.

[0038] As a preferred embodiment, a control assembly is provided outside the above-mentioned internal diameter gauge body 1, and the control assembly is used to drive the limiting member 3 to reciprocate axially along the internal diameter gauge body 1.

[0039] In the above embodiment, the control assembly can be an electric cylinder or a hydraulic cylinder. Taking the electric cylinder as an example, the electric cylinder is fixed outside the internal diameter gauge body 1 by means of threaded connection with a connecting piece, and then the limiting member 3 is connected to the moving end of the electric cylinder; in the static state, the electric cylinder is in the extended state, and when it is fully extended, the expansion spring probe 2 is inside the limiting member 3, that is, the limiting member compresses the expansion spring probe 2; when measurement needs to start, first place the expansion spring type internal diameter gauge above the target hole of the object 9 to be measured, so that the expansion spring probe 2 of the expansion spring type internal diameter dial gauge is aligned with the target hole of the object 9 to be measured, and the whole expansion spring type internal diameter gauge moves downward. When the limiting member 3 fits on the surface of the object where the target hole of the object 9 to be measured is located, it stops moving downward. At this time, the expansion spring type internal diameter gauge is equivalent to being placed above the target diameter. The electric cylinder starts to contract. The limiting member 3 that fits with the object where the target hole of the object 9 to be measured is located is blocked and remains stationary. The internal diameter gauge body 1 that has a sliding relationship with the limiting member 3 continues to descend under the action of the electric cylinder. The expansion spring probe 2 slides relative to the limiting member 3 and gradually disengages from the limiting member 3 and enters the target orifice to start measurement. At this time, the expansion spring probe 2 is not restricted by the limiting member 3 and is in a free measurement state; when the measurement is over, the limiting member 3 remains stationary (manual pressing can be used), and the electric cylinder pulls up the internal diameter gauge body 1 that has a sliding position relationship with the limiting member 3. The expansion spring probe 2 slides relative to the limiting member 3 and gradually disengages from the target orifice and enters the limiting member 3, and the measurement is over; this design method belongs to a semi-automatic measurement method, making it more convenient for personnel to measure the aperture.

[0040] As a preferred embodiment, the above-mentioned control assembly is fixedly arranged outside the above-mentioned internal diameter gauge body 1.

[0041] The control assembly can be fixed outside the internal diameter gauge body 1 by welding. This design method can make the control assembly and the internal diameter gauge body 1 more firm.

[0042] As a preferred embodiment, the above control component includes a fixing member 4 disposed outside the inner diameter gauge main body 1, and an elastic member is provided between the fixing member 4 and the limiting member 3. When the limiting member 3 is sleeved on the expansion spring probe 2, the elastic member is in an initial state. When the limiting member 3 releases the expansion spring probe 2, the elastic member is in a contracted state.

[0043] In the above embodiment, the fixing member 4 is welded outside the inner diameter gauge main body 1. Only need to align the expansion spring probe 2 of the expansion spring type inner diameter gauge with the target hole of the object 9 to be measured, directly press the inner diameter gauge main body 1 to insert it. When the limiting member 3 touches the surface of the object 9 to be measured, it stops moving. Then the elastic member is compressed, and the inside diameter dial gauge continues to penetrate into the target hole of the object 9 to be measured for inside diameter measurement. At this time, the expansion spring probe 2 is not restricted by the limiting member 3 and is in a free measurement state. After the measurement is completed, cancel the force acting on the inner diameter gauge main body 1. The expansion spring probe 2 first exits the target hole of the object 9 to be measured, and then enters the middle of the limiting member 3 under the action of the elastic member. The expansion spring probe 2 is compressed again, and the elastic member expands to restore the initial measurement state; the expansion spring type inner diameter gauge in this design method only needs a pressure acting on the inner diameter gauge main body 1 to complete the measurement. When the pressure applied to the inner diameter gauge main body 1 is removed, the expansion spring type inner diameter gauge returns to the initial measurement state, and the measurement efficiency is further improved.

[0044] As a preferred embodiment, the above elastic member is a spring 5.

[0045] In the above embodiment, the spring 5 has good elasticity and can quickly return to its original shape after being acted upon by an external force. This high elasticity makes the spring 5 very suitable for the repeated stress and recovery requirements of this application. Moreover, the restoring force of the spring 5 is stable and reliable, not easily interfered by external factors. It can store a large amount of elastic potential energy during the deformation process, and this energy can be quickly released when needed.

[0046] As a preferred embodiment, a flexible protective sleeve 6 is provided between the fixing member 4 and the elastic member, and the flexible protective sleeve 6 is sleeved at intervals outside the spring 5.

[0047] In the above embodiment, the flexible protective sleeve 6 can protect the spring 5 and prevent the spring 5 from being contaminated; the above flexible protective sleeve 6 can be a leather membrane member. The leather membrane member has a soft material, which can meet the requirement of frequent changes in the position between the fixing member 4 and the elastic member during the contraction process of the spring 5. At the same time, the leather membrane member can be waterproof to a certain extent, and the personnel can remove the dust by wiping.

[0048] As a preferred embodiment, the above-mentioned limiting member 3 passes through the limiting hole 7, and the limiting member 3 is provided with an inner chamfer 8. The inner chamfer 8 extends from the edge of the limiting hole 7 on the side of the limiting member 3 away from the fixing member 4 towards the central axis direction of the limiting member 3, forming a smooth transition surface.

[0049] In the above embodiment, when the expansion spring type internal diameter gauge completes the measurement and the expansion spring probe 2 returns from the target hole of the object 9 to the inside of the limiting member 3, it enters the limiting hole 7 of the limiting member 3 through the inner chamfer 8, reducing the possibility of the expansion spring probe 2 colliding during the process of entering the limiting member 3, and improving the safety and stability of the expansion spring probe 2; it should be noted that the limiting member 3 is preferably an annular member.

[0050] As a preferred embodiment, the shape of the above-mentioned inner chamfer 8 is an arc.

[0051] In the above embodiment, the radius range of the inner chamfer 8 is a second set value, where the second set value is greater than the difference between the maximum value in the measurement range value and the first set value; this design method can, to a certain extent, prevent the expansion spring probe 2 from being directly pulled into the limiting member 3, playing a role in protecting the expansion spring probe 2, and thus improving its service life.

[0052] In summary, the embodiment of the present utility model provides an expansion spring type internal diameter gauge. Due to the addition of the limiting member 3, the measurement process does not require personnel assistance to enter the hole, and the operation is simple and convenient. At the same time, with the cooperation of the fixing member 4 and the spring 5, the expansion spring type internal diameter gauge is in a contracted state in the non-measurement state and in a free state in the measurement state, which can not only allow the probe to smoothly enter the hole, but also does not affect the normal measurement of the probe, and can also reduce the occurrence of the "jamming" phenomenon and improve the measurement efficiency.

[0053] The above is only the preferred embodiment of the present utility model and is not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A spring-expanding type internal diameter gauge, comprising an internal diameter gauge main body (1), and the internal diameter gauge main body (1) includes a spring-expanding probe (2), characterized in that, A limit member (3) is slidably sleeved on the outside of the internal diameter gauge body (1). The limit member (3) is used to compress or loosen the expansion spring probe (2). When the limit member (3) is sleeved on the expansion spring probe (2), the expansion spring probe (2) is in a compressed measurement state at a first set value, and the first set value is less than the maximum value in the measurement range value.

2. The dial bore gauge of the expansion spring type according to claim 1, wherein, The first set value is the minimum value in the measurement range value.

3. A spring-expanding type internal diameter gauge according to claim 1, characterized in that, A control assembly is provided on the outside of the internal diameter gauge body (1). The control assembly is used to drive the limit member (3) to reciprocate axially along the internal diameter gauge body (1).

4. The expanding spring type inside diameter gauge according to claim 3, characterized in that, The control assembly is fixedly provided on the outside of the internal diameter gauge body (1).

5. The inside diameter gauge of the expansion spring type according to claim 3, characterized in that, The control assembly includes a fixing member (4) provided on the outside of the internal diameter gauge body (1). An elastic member is provided between the fixing member (4) and the limit member (3). When the limit member (3) is sleeved on the expansion spring probe (2), the elastic member is in an initial state. When the limit member (3) loosens the expansion spring probe (2), the elastic member is in a contracted state.

6. The dial bore gauge with expanding spring according to claim 5, characterized in that, The elastic member is a spring (5).

7. A spring-expanding type inside diameter gauge according to claim 6, characterized in that, A flexible protective sleeve (6) is provided between the fixing member (4) and the elastic member. The flexible protective sleeve (6) is spacedly sleeved on the outside of the spring (5).

8. A spring-expanding internal diameter gauge according to any one of claims 3 to 7, characterized in that, The limit member (3) is penetrated with a limit hole (7). The limit member (3) is provided with an internal chamfer (8). The internal chamfer (8) extends from the edge of the limit hole (7) on the side of the limit member (3) away from the fixing member (4) towards the central axis direction of the limit member (3), forming a smooth transition surface.

9. The dial bore gauge with expansion spring according to claim 8, wherein The shape of the internal chamfer (8) is arc-shaped.

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