CN219640866U - Coaxial measuring tool for inner hole of outer ring groove - Google Patents

Abstract

The utility model belongs to the field of auto parts detection, and relates to a coaxial measuring tool for an outer ring groove to an inner hole, which includes a workpiece, a dial indicator, a locking sleeve, a locking screw, a measuring body, a spring, a measuring head and a mandrel; The lower end of the body is provided with a cylinder to fit with the reference hole of the workpiece; the dial gauge is installed in the hole of the measuring body through a locking sleeve and locked with a locking screw; the measuring head is installed in the groove at the left end of the measuring body through the mandrel, And it can rotate around the mandrel; the spring is installed in the hole of the measuring body, and presses against the measuring head so that the measuring head is in close contact with the measured surface. The utility model has a simple structure, does not need other auxiliary detection devices, has low detection cost, is convenient to use, and is flexible, and is very suitable for use on the production site; at the same time, its measurement accuracy can reach 0.01mm stably, and the detection efficiency is increased by 3 times compared with the traditional measurement method.

Description

A Coaxial Measuring Tool for Outer Ring Groove to Inner Hole

technical field

The utility model belongs to the field of auto parts detection and relates to a coaxial measuring tool for an outer ring groove and an inner hole.

Background technique

The bracket is a key part of the automobile brake. Since this part is a special-shaped part, the structure is relatively complicated. The coaxiality between the shaft pin hole and the outer circular groove needs to be tested according to the requirements. The traditional method uses the universal measurement method, which requires a special The device is used to clamp and fix the parts on the dividing head, and a measuring platform, dial indicator seat, dial indicator, etc. are also required, and the beating of the inner hole and the outer groove are detected by rotating the parts, and the difference is the detection result; but This measurement method has high detection cost, complex detection method, long measurement time, and low detection efficiency. It is only suitable for small batch or sample production, and is not suitable for mass production.

Utility model content

In view of this, the purpose of the present utility model is to provide a coaxial measuring tool for the outer ring groove and the inner hole, which makes the detection method simple, the detection efficiency is high, and the detection result is reliable.

In order to achieve the above purpose, the utility model provides the following technical solutions: a coaxial measuring tool for outer ring groove and inner hole, including workpiece, dial indicator, locking sleeve, locking screw, measuring body, spring, measuring head and core Shaft; the lower end of the measuring body is provided with a cylinder to fit with the reference hole of the workpiece; the dial indicator is installed in the measuring body hole through a locking sleeve and locked with a locking screw; the measuring head is installed in the concave hole at the left end of the measuring body through a mandrel In the groove, it can rotate around the mandrel; the spring is installed in the hole of the measuring body, and presses against the measuring head so that the measuring head is in close contact with the measured surface.

Optionally, the distance H1 between the measuring head and the mandrel is equal to the distance H2 between the dial indicator measuring head and the contact position of the measuring head.

Optionally, the cylinder at the lower end of the measuring body is matched with the reference hole of the workpiece according to H6 level precision.

Optionally, the measuring head is matched with the groove at the left end of the measuring body according to H6 level precision.

Optionally, the measuring head and the mandrel are matched according to H6 precision.

Optionally, the shape of the close contact point between the measuring head and the measured surface of the workpiece is spherical.

The beneficial effect of the utility model is that: the utility model is a coaxial measuring tool for the outer ring groove and the inner hole, which has a simple structure, does not need other auxiliary detection devices, has low detection cost, is convenient to use, and is flexible, and is very suitable for use on the production site; At the same time, its measurement accuracy can reach 0.01mm stably, and the detection efficiency is 3 times higher than that of traditional measurement methods.

Other advantages, objectives and features of the present utility model will be set forth in the following specification to some extent, and to some extent, will be obvious to those skilled in the art based on the investigation and research below, or can be Get teaching from the practice of the utility model. The objectives and other advantages of the utility model can be realized and obtained through the following description.

Description of drawings

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be described in detail below in conjunction with the accompanying drawings, wherein:

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is a schematic diagram of detection elements of the utility model;

Fig. 3 is the top view of the utility model;

Fig. 4 is a cross-sectional view of D-D in Fig. 1 .

Reference signs: workpiece 1, dial indicator 2, locking sleeve 3, locking screw 4, measuring body 5, spring 6, measuring head 7, mandrel 8;

Among them, H1 is the distance between the measuring head and the mandrel; H2 is the distance between the dial gauge measuring head and the contact position of the measuring head; D2 is the diameter of the reference hole; D1 is the diameter of the measured groove; D3 is the coaxiality of D1 and D2 Require.

Detailed ways

The implementation of the present utility model is described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The utility model can also be implemented or applied through other different specific implementation modes, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the utility model. It should be noted that the illustrations provided in the following embodiments are only schematically illustrating the basic idea of the present utility model, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

Wherein, accompanying drawing is only for exemplary illustration, and what represent is only schematic diagram, rather than physical figure, can not be interpreted as the restriction to the utility model; In order to better illustrate the embodiment of the utility model, some parts of accompanying drawing will The omission, enlargement or reduction does not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

In the accompanying drawings of the utility model embodiment, the same or similar symbols correspond to the same or similar parts; The orientation or positional relationship indicated by "right", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying the referred device Or elements must have a specific orientation, structure and operation with a specific orientation, so the terms describing the positional relationship in the drawings are only for illustrative purposes, and cannot be understood as limitations on the present utility model. For those of ordinary skill in the art , the specific meanings of the above terms can be understood according to specific situations.

Please refer to Figures 1 and 3, which are a coaxial measuring tool for the outer ring groove and the inner hole, including a workpiece 1, a dial indicator 2, a locking sleeve 3, a locking screw 4, a measuring body 5, a spring 6, and a measuring head 7 , mandrel 8; a cylinder at the lower end of the measuring body 5 is matched with the reference hole of the workpiece 1 according to H6 level precision, so as to ensure a suitable gap between the measuring tool and the measured reference hole, so as to facilitate the rotation of the measuring tool, dial indicator 2 It is installed in the hole of the measuring body 5 through the locking sleeve 3 and locked with the locking screw 4.

As shown in Figure 4, the measuring head 7 is installed in the groove at the left end of the measuring body 5 through the mandrel 8, and cooperates with this groove according to the H6 level precision to reduce the lateral movement of the measuring head 7, improve the measurement accuracy, and can The mandrel 8 rotates at a certain angle, the spring 6 is installed in the hole of the measuring body 5, and presses against the measuring head 7 so that the measuring head 7 is in close contact with the measured surface. As shown in Figure 2, D2 is the diameter of the reference hole, D1 is the diameter of the measured groove, and D3 is the coaxiality requirement of D1 and D2.

In this embodiment, the measuring head 7 and the mandrel 8 are matched according to H6 precision to ensure proper clearance and measurement accuracy.

In this embodiment, the spring 6 pushes the measuring head 7, forcing the measuring head 7 to be in close contact with the measured surface of the workpiece 1 during the measurement process, thereby improving the measurement accuracy.

In this embodiment, the shape of the close contact point between the measuring head 7 and the measured surface of the workpiece 1 is spherical, so that there is a point contact between the measuring head 7 and the measured surface, which improves the measurement accuracy.

In this embodiment, the distance H1 between the measuring head 7 and the mandrel 8 is equal to the distance H2 between the dial indicator measuring head and the contact position of the measuring head 7, so as to ensure that the actual error value of the part is consistent with the displayed value of the dial indicator and ensure the measurement accuracy.

In this embodiment, a flexible dial gauge is used for measurement, and the detection device has low cost and high precision, which can reach 0.01 mm.

The utility model comprises the following steps when in use:

Step 1: Insert the cylinder at the lower end of the measuring body 5 into the reference hole of the workpiece 1 as shown in Figure 1;

The second step: compress the spring 6, make the measuring head 7 stretch out, and snap the measuring head 7 into the groove to be measured;

Step 3: Rotate the measuring tool for one week, and the change value of the dial indicator is the measurement result.

The utility model is simple in structure, does not need other auxiliary detection devices, the manufacturing cost of the measuring tool is low, the detection cost is low, the operation can be completed with one hand, the use is convenient and flexible, and it is very suitable for use on the production site; the measuring tool has strong versatility and is suitable for similar Measure various parts required; at the same time, the measurement accuracy of this measuring tool can reach 0.01mm stably, and the detection efficiency is 3 times higher than that of traditional measurement methods.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the utility model can be Modifications or equivalent replacements of the technical solutions without departing from the spirit and scope of the technical solutions shall be covered by the claims of the present utility model.

Claims (6)

1. A kind of outer ring groove to inner hole coaxial measuring tool, it is characterized in that: comprise workpiece, dial indicator, locking sleeve, locking screw, measuring body, spring, measuring head and mandrel; The lower end of measuring body is set A cylinder is installed in conjunction with the reference hole of the workpiece; the dial indicator is installed in the hole of the measuring body through a locking sleeve, and locked with a locking screw; the measuring head is installed in the groove at the left end of the measuring body through the mandrel, and can go around the center The shaft rotates; the spring is installed in the hole of the measuring body, and presses against the measuring head so that the measuring head is in close contact with the measured surface. 2. A coaxial measuring tool for outer ring groove to inner hole according to claim 1, characterized in that: the distance H1 between the measuring head and the mandrel is equal to the distance H2 between the dial gauge measuring head and the contact position of the measuring head. 3. A coaxial measuring tool for outer ring groove to inner hole according to claim 1, characterized in that: the cylinder at the lower end of the measuring body is matched with the reference hole of the workpiece according to H6 level precision. 4. An outer ring groove-to-inner hole coaxial measuring tool according to claim 1, characterized in that: the measuring head and the groove at the left end of the measuring body are matched according to H6 level precision. 5. A coaxial measuring tool for outer ring groove and inner hole according to claim 1, characterized in that: the measuring head and the mandrel are matched according to H6 level precision. 6 . The outer ring groove-to-inner hole coaxial measuring tool according to claim 1 , wherein the shape of the close contact point between the measuring head and the measured surface of the workpiece is spherical.