On-machine detection device for inner hole groove

Abstract

The utility model relates to the technical field of inner diameter measurement, and discloses an inner hole groove on-machine detection device which comprises a rotating handle, a measuring head and a movable measuring block, the measuring head is arranged at the upper end of the rotating handle, the upper surface of the measuring head is provided with a movable groove penetrating through the center point of the upper surface of the measuring head, and the movable measuring block is arranged in the movable groove. The movable measuring block is arranged in the movable groove and is connected with a moving block arranged in the measuring head through the lower end; the number of the mobile measuring blocks is not less than three, and the mobile measuring blocks are uniformly distributed along the circumference; a wheel disc is arranged below the moving block, the wheel disc and the rotating handle are connected through a telescopic rod, and the telescopic rod and the rotating handle are assembled in a linear sliding mode in the axial direction; when the rotating handle rotates, the rotating handle achieves linear motion, and the moving block conducts linear motion in the direction of the moving groove. The device solves the problems that in the prior art, inner calipers are complex in operation, can only measure the inner diameter of an opening and are prone to disengagement.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of internal diameter measurement, specifically to an internal hole groove on-machine detection device. BACKGROUND

[0002] The internal hole groove is a common internal hole structure and is widely used in occasions such as hydraulic cylinder body sealing groove and bearing clamp spring groove. The size precision of the internal hole groove plays an important role in the sealing effect of the cylinder body and the relative position of the bearing installation. Therefore, accurate measurement of the internal hole groove is crucial to ensure product quality and performance.

[0003] In the prior art, when measuring a hole with a small depth, the internal caliper is prone to come off, and additional support is needed to prevent it from falling off, which increases the complexity of the operation. The opening and closing operation of the internal caliper requires certain skills and proficiency, and incorrect operation methods may cause damage to the caliper jaws or measurement errors. During the measurement process, the jaws need to be kept stable and avoid being subjected to additional forces to ensure the accuracy of the measurement. This increases the difficulty and complexity of the operation. Moreover, the internal caliper in the prior art cannot measure the internal diameter of a deep hole. SUMMARY

[0004] (I) The technical problem solved: In view of the shortcomings of the prior art, the utility model provides an internal hole groove on-machine detection device, which has the advantages of low proficiency requirement, ability to measure the internal diameter of a deep hole, high positioning ability and high precision, and solves the problems of complex operation of the internal caliper in the prior art, only being able to measure the internal diameter of the opening, and being prone to come off.

[0005] (II) Technical solution: To achieve the above-mentioned low proficiency requirement, the ability to measure the internal diameter of a deep hole, high positioning ability and high precision, the utility model provides the following technical solution: an internal hole groove on-machine detection device, comprising a rotating handle, a measuring head and a moving measuring block, the measuring head is arranged at the upper end of the rotating handle, the upper surface of the measuring head is provided with a movable groove passing through the center point of the upper surface of the measuring head, the moving measuring block is arranged inside the movable groove and connected with the moving block arranged inside the measuring head through the lower end; the number of moving measuring blocks is not less than three and is evenly distributed along the circumference; a wheel disc is arranged below the moving block, the wheel disc and the rotating handle are connected through an extension rod, the extension rod and the rotating handle are assembled along the axial straight line; when the rotating handle rotates, it realizes straight line motion, and the moving block moves along the straight line in the direction of the movable groove.

[0006] Preferably, the upper surface of the wheel disc is provided with a clamping groove, the clamping groove is in a vortex shape; the lower end of the moving block is provided with a clamping block, the clamping block is matched with the clamping groove; the moving block and the wheel disc are connected through clamping.

[0007] Preferably, the number of the card blocks is not less than two, and the spacing between all the card blocks is the same as the spacing between the adjacent rings of the card slot.

[0008] Preferably, the outer surface of the rotating handle is provided with external threads, the lower surface of the measuring head is fixedly connected with a limiting outer ring, the limiting outer ring is designed with a hollowed middle part, the inner surface of the hollowed part is provided with a threaded structure, and the rotating handle is rotationally connected with the limiting outer ring through the threaded structure.

[0009] Preferably, the telescopic rod is divided into two parts, the upper end is hollow, the lower end has a linear direction of movement freedom in the upper end, the inner surface of the upper end is provided with a sliding groove, and the outer surface of the lower end is provided with a clamping block matched with the sliding groove; the lower surface of the wheel disc is fixedly connected with the upper end of the telescopic rod, and the upper surface of the rotating handle is fixedly connected with the lower end of the telescopic rod; when the rotating handle is rotated along the threaded structure, the lower end of the telescopic rod drives the upper end to rotate together.

[0010] Preferably, the measuring head and the rotating handle, and the moving measuring block and the moving block are detachably connected.

[0011] Preferably, the whole moving measuring block is in a T-shaped structure, and the diameter of the upper end is larger than that of the lower end.

[0012] Preferably, the outer surface of the rotating handle is provided with a scale.

[0013] (Three) beneficial effects: compared with the prior art, the utility model provides an inner hole groove on-machine detection device, has the following beneficial effects:

[0014] 1、the inner hole groove on-machine detection device, through the detachable structure between the measuring head and the rotating handle, the moving measuring block and the moving block, realize the replacement of the size of the workpiece, namely, during the measurement, the staff prefer to select the measuring head which is approximate and slightly smaller than the inner diameter of the to-be-measured inner hole groove, ensure that the measuring head can be smoothly inserted into the to-be-measured inner hole groove, then according to the gap between the measuring head and the to-be-measured inner hole groove, select the appropriate size of the moving measuring block, and connect it with the moving block; during the measurement, the user rotates the rotating handle, the whole length of the workpiece changes, the moving block expands to the circumference, to adjust the position of the moving measuring block in the movable groove, and the depth of the current workpiece in the to-be-measured hole is measured through the scale on the outer surface of the rotating handle, when the moving measuring block cannot rotate, the position of the moving measuring block at this time is recorded, the distance between the moving measuring block and the measuring head plus the diameter of the measuring head is the inner diameter of the to-be-measured inner hole groove, the T-shaped moving measuring block is more flexible in grasping the measuring point, and the device has lower proficiency requirement and simple operation, improves the measurement precision, and through the replaceable and detachable design, the structure can be used for measuring inner hole grooves of various models and sizes.

[0015] 2、The inner hole groove in-machine detection device, through rotating the rotating handle, linear motion of the moving measuring block on the upper surface of the measuring head can be realized, the moving measuring block and the moving block are detachably connected, the lower end of the moving block is provided with a clamping block, and clamping is realized through the clamping block and the clamping groove on the upper surface of the lower wheel disc, the clamping groove is a vortex structure, when the wheel disc rotates, the clamping block connected with the clamping groove drives the moving block to move along the vortex direction, but the circular direction motion is limited by the two sides of the clamping groove, thus linear motion towards or away from the center of the circle along the direction of the clamping groove is formed; when the wheel disc is designed, the fixed connection between the rotating handle can be realized through integral machining or welding process, therefore, the equipment is cylindrical, only the rotating handle needs to be rotated, and the inner diameter can be measured, and compared with the prior art, the cylindrical design of the utility model makes the equipment can be deeply into the inner hole groove to be measured, and the diameter in the deep place can be measured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a complete structure schematic view of the utility model;

[0017] Figure 2 It is a complete structure part sectional view schematic view of the utility model;

[0018] Figure 3 It is a wheel disc and moving block part structure schematic view of the utility model;

[0019] Figure 4 It is a limiting outer ring part structure schematic view of the utility model

[0020] Figure 5 It is a telescopic rod sectional view structure schematic view of the utility model.

[0021] In the drawing: 1, rotating handle; 11, limiting clamping block; 12, scale; 13, telescopic rod; 2, measuring head; 21, movable groove; 22, moving block; 221, clamping block; 23, wheel disc; 231, clamping groove; 3, moving measuring block; 4, limiting outer ring; 41, screw structure. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0023] Please refer to Figures 1-2The utility model provides an inner hole groove in -machine detection device, including rotating handle 1, measuring head 2 and mobile measuring block 3, the upper surface of measuring head 2 is equipped with the movable slot 21 passing through the center point of the upper surface of measuring head 2, mobile measuring block 3 is arranged in movable slot 21 inside and is connected with the motion block 22 arranged in measuring head 2 through lower end, so that mobile measuring block 3 can carry out the linear motion of approaching center point or far away center point in movable slot 21 inside, and the motion in the circumferential direction is limited by movable slot 21, mobile measuring block 3 is not less than three in number, is evenly distributed along the circumference, and the whole of mobile measuring block 3 presents T letter type structure, and the upper end diameter is greater than the lower end diameter, realizes the accurate positioning of measuring point, motion block 22 is equipped with wheel disc 23 below, and wheel disc 23 is movably connected between the rotating handle 1 through telescopic link 13, and telescopic link 13 is linearly slidably assembled between the rotating handle 1 along the axial direction, namely when the user rotates rotating handle 1, not only rotating handle 1 itself can realize linear motion, so that the user can measure the current workpiece measured depth through the scale 12 arranged on the outer surface of rotating handle 1, and motion block 22 can also carry out linear motion along the direction of movable slot 21 through wheel disc 23, under the action of the design, the circumferential motion of rotating handle 1 is converted into the linear motion of mobile measuring block 3, so that the utility model can be designed into cylindrical shape, can be in-depth measured inner hole groove inside, realizes the measurement of deep diameter, the cooperation between wheel disc 23, motion block 22 and rotating handle 1 can adopt the movement mode similar to three jaw chuck claw toe on gear disc 23.

[0024] Please refer to Figures 2-3 In the embodiment, the upper surface of the wheel disc 23 is provided with a clamping groove 231, which is in the form of a vortex, and the center of the vortex is the center of the wheel disc 23; the lower end of the motion block 22 is provided with a clamping block 221, the number of which is not less than two, the clamping block 221 is matched with the clamping groove 231, and the distance between the clamping blocks 221 is the same as the distance between adjacent circles of the clamping groove 231; the motion block 22 and the wheel disc 23 are connected by clamping, and the lower surface of the wheel disc 23 is fixedly connected with the rotating handle 1 by integral processing or welding, so that when the user rotates the rotating handle 1, the motion block 22 on the wheel disc 23 moves in the direction of the vortex, but the motion in the circumferential direction is limited by the clamping groove 231, so that linear motion is formed in the direction of the clamping groove 231 towards or away from the center, driving the mobile measuring block 3 to move.

[0025] Please refer to Figure 2 and Figure 4In the embodiment, the outer surface of the rotating handle 1 is provided with external threads, the lower surface of the measuring head 2 is fixedly connected with a limiting outer ring 4, the limiting outer ring 4 is designed with a hollowed-out middle part, the inner surface of the hollowed-out part is provided with a threaded structure 41, the rotating handle 1 is rotationally connected with the limiting outer ring 4 through the threaded structure 41, so that when the user rotates the rotating handle 1 in the threaded direction, the rotating handle 1 has a linear-directional freedom of movement inside the limiting outer ring 4, thereby changing the overall length of the workpiece.

[0026] Please refer to Figure 5 In the embodiment, the telescopic rod 13 is divided into upper and lower parts, the upper end is hollowed, the lower end has a linear-directional freedom of movement inside the upper end to realize the telescopic function, the inner surface of the upper end is provided with a sliding groove, the outer surface of the lower end is provided with a clamping block matched with the sliding groove, the telescopic rod 13 is limited in the track while enabling the lower end to drive the upper end to rotate together; the lower surface of the wheel disc 23 is fixedly connected with the upper end of the telescopic rod 13, and the upper surface of the rotating handle 1 is fixedly connected with the lower end of the telescopic rod 13; therefore, when the rotating handle 1 rotates along the threaded structure 41, the lower end of the telescopic rod 13 drives the upper end to rotate together, and the wheel disc 23 also rotates together.

[0027] Please refer to Figure 2 and Figure 4 The measuring head 2 and the rotating handle 1, and the moving measuring block 3 and the moving block 22 are detachably connected, so as to realize the replacement of the measurement of the workpiece size, that is, during the measurement, the worker preferentially selects the measuring head 2 which is approximately and slightly smaller than the inner diameter of the to-be-measured inner hole groove, ensures that the measuring head 2 can be smoothly inserted into the to-be-measured inner hole groove, and then selects the moving measuring block 3 with a proper size according to the gap between the measuring head 2 and the to-be-measured inner hole groove, and connects the moving measuring block 3 with the moving block 22; the measuring head 2 and the rotating handle 1, and the moving measuring block 3 and the moving block 22 can be detachably connected through threads.

[0028] The working principle is as follows: before the measurement, the worker preferentially selects the measuring head 2 which is approximately and slightly smaller than the inner diameter of the to-be-measured inner hole groove, ensures that the measuring head 2 can be smoothly inserted into the to-be-measured inner hole groove, and then selects the moving measuring block 3 with a proper size according to the gap between the measuring head 2 and the to-be-measured inner hole groove, and connects the moving measuring block 3 with the moving block 22; during the measurement, the user rotates the rotating handle 1 to adjust the position of the moving measuring block 3 in the movable groove 21, so that the overall length of the workpiece changes, the moving block 22 expands to the circumferential periphery to adjust the position of the moving measuring block 3 in the movable groove 21, and the depth of the current workpiece in the to-be-measured hole is measured through the scale 12 on the outer surface of the rotating handle 1; when the moving measuring block 3 cannot rotate, the position of the moving measuring block 3 at this time is recorded, and the distance between the moving measuring block 3 and the measuring head 2 plus the diameter of the measuring head 2 is the inner diameter of the to-be-measured inner hole groove.

[0029] In summary, the inner hole groove in-machine detection device is more accurate in grasping the measurement point, and the device requires lower proficiency, is simple to operate, improves the measurement accuracy, through the replaceable and detachable design, so that the structure can be used for measuring various types of inner hole grooves; and compared with the prior art, the cylindrical design of the utility model makes the equipment can go deep into the inner hole groove to be measured, and realize the measurement of the diameter in the deep place.

[0030] It should be noted that in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. In this document, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0031] Although the embodiments of the present application have been shown and described, it is to be understood that for the purpose of the present application, the embodiments change, modify, replace, and vary in many ways without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An in-machine inspection device for internal grooves, comprising a rotary handle (1), a measuring head (2), and a movable measuring block (3), wherein the measuring head (2) is disposed at the upper end of the rotary handle (1), characterized in that: The upper surface of the measuring head (2) is provided with a movable groove (21) passing through the center point of the upper surface of the measuring head (2). The movable measuring block (3) is set inside the movable groove (21) and is connected to the moving block (22) set inside the measuring head (2) through its lower end. There are no fewer than three movable measuring blocks (3), which are evenly distributed along the circumference. A wheel (23) is set below the moving block (22). The wheel (23) is connected to the rotating handle (1) through a telescopic rod (13). The telescopic rod (13) and the rotating handle (1) are slidably assembled in a straight line along the axial direction. When the rotating handle (1) rotates, it moves in a straight line, and the moving block (22) moves in a straight line along the direction of the movable groove (21).

2. The in-machine inspection device for internal grooves according to claim 1, characterized in that: The upper surface of the wheel (23) is provided with a slot (231), which is vortex-shaped; the lower end of the moving block (22) is provided with a block (221), which is adapted to the slot (231); the moving block (22) and the wheel (23) are connected by a snap-fit ​​connection.

3. The in-machine inspection device for internal grooves according to claim 2, characterized in that: The number of card blocks (221) is not less than two, and the spacing between all the card blocks (221) is the same as the spacing between adjacent rings of the card slot (231).

4. The in-machine inspection device for internal grooves according to claim 2, characterized in that: The outer surface of the rotating handle (1) is provided with an external thread, and the lower surface of the measuring head (2) is fixedly connected to a limiting outer ring (4). The limiting outer ring (4) is designed with a hollowed-out center, and the inner surface of the hollowed-out part is provided with a threaded structure (41). The rotating handle (1) is rotatably connected to the limiting outer ring (4) through the threaded structure (41).

5. The in-machine inspection device for internal grooves according to claim 4, characterized in that: The telescopic rod (13) is divided into upper and lower parts. The upper end is hollow inside, and the lower end has a linear motion degree of freedom inside the upper end. The inner surface of the upper end is provided with a sliding groove, and the outer surface of the lower end is provided with a locking block that matches the sliding groove. The lower surface of the wheel (23) is fixedly connected to the upper end of the telescopic rod (13), and the upper surface of the rotating handle (1) is fixedly connected to the lower end of the telescopic rod (13). When the rotating handle (1) rotates along the thread structure (41), the lower end of the telescopic rod (13) drives the upper end to rotate together.

6. An in-machine inspection device for internal grooves according to any one of claims 1-5, characterized in that: The measuring head (2) and the rotating handle (1), and the moving measuring block (3) and the moving block (22) are detachably connected.

7. An in-machine inspection device for internal grooves according to any one of claims 1-5, characterized in that: The moving measuring block (3) has a T-shaped structure, with the upper diameter being larger than the lower diameter.

8. An in-machine inspection device for internal grooves according to any one of claims 1-5, characterized in that: A scale (12) is provided on the outer surface of the rotating handle (1).

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