CN201302442Y - Screw thread hole verticality inspection tool - Google Patents

Abstract

The utility model discloses a screw thread hole verticality inspection tool which comprises a rotating block, a positioning threaded rod and a bore dial indicator, wherein, the rotating block is provided with two axially parallel through holes A and B, the upper end of the positioning threaded rod is matched with the through hole A, a thread with taper is arranged at the lower end of the positioning threaded rod, and a measuring rod of the bore dial indicator is matched with the through hole B. The rotating block is a cylinder, and the axial line of the through hole A is coincided with the axial line of the cylinder. A through hole is formed in the radial direction of the through hole B of the rotating block and is connected with a fastening bolt through a thread, and the measuring rod is matched with the through hole B through the fastening bolt. The rotating block is the cylinder with a notch, and the through hole connected with the fastening bolt through the thread is arranged on the notch. The provided screw thread hole verticality inspection tool has the advantages of simple structure, low cost, convenient use, high precision and high validity of inspection of the verticality of the hole and the surface of the workpiece; and the screw thread hole verticality inspection tool meets various requirements for measuring the verticality of the workpiece.

Description

Threaded hole verticality inspection tool

technical field

The utility model relates to a verticality inspection tool, in particular to a threaded hole verticality inspection tool.

Background technique

Many devices have requirements for the verticality of the threaded holes used. For example, the brake caliper bracket is an important part connecting the brake caliper and the steering knuckle, and usually two bolts are used to realize the connection with the steering knuckle. Therefore, the perpendicularity between the two connecting screw holes of the bracket and the mounting surface of the screw holes is quite important. It is generally required that the verticality of the hole and surface be controlled within 0.10mm. In the case of mass production of products, there must be reasonable and effective special inspection tools to detect the required size to ensure product quality. At present, in the prior art, there is no high-precision inspection tool specifically for the verticality detection of threaded holes, but the general verticality inspection tool has a complex structure, is inconvenient to use, and has low precision. It is easy to cause measurement errors when used for the verticality inspection of threaded holes.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies in the prior art and provide a screw hole verticality inspection tool with simple structure, convenient use and high precision.

The threaded hole verticality inspection tool of the utility model includes a rotating block, a positioning screw, and an inner diameter dial indicator. The rotating block is provided with two axially parallel through holes A and B, and the upper end of the positioning screw is aligned with the through hole A. To cooperate, the lower end of the positioning screw is provided with a tapered thread, and the measuring rod of the inner diameter dial indicator is matched with the through hole B.

The rotating block is a cylinder, and the axis of the through hole A coincides with the axis of the cylinder.

The rotating block is provided with a through hole in the radial direction of the through hole B and is threadedly connected with the fastening bolt, and the measuring rod is matched with the through hole B through the fastening bolt. The rotating block is a cylinder with a notch, and the through hole threaded with the fastening bolt is arranged on the notch.

Due to the adoption of the above technical scheme, through the reasonable combination of positioning screw, rotating block, inner diameter dial indicator, etc., the utility model provides a threaded hole verticality inspection tool with simple structure, low cost, convenient use, and high precision. The verticality detection is highly effective and meets the requirements for measuring the verticality of the workpiece.

Description of drawings

Fig. 1 is the front view of the utility model embodiment.

Fig. 2 is a left view of the utility model embodiment.

Fig. 3 is the A-A sectional view of the front view of the embodiment of the utility model.

Fig. 4 is a perspective view of an embodiment of the utility model.

Explanation of reference signs: 1 inner diameter dial indicator; 2 rotating block; 3 fastening bolt; 4 positioning screw; 5 through hole A; 6 through hole B; 7 measuring rod; 8 measuring head.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described. Although the utility model will be described in conjunction with preferred embodiments, it should be understood that it does not mean that the utility model is limited to the embodiments. On the contrary, the invention is to cover alternatives, modifications and equivalents, which may be included within the scope of the invention as defined by the appended claims.

Referring to Figures 1-4, the threaded hole verticality testing tool introduced here is generally used for verticality testing of threaded holes, but it should be known that the utility model can also be used for verticality testing of other structures. The threaded hole verticality inspection tool includes a rotating block 2, a positioning screw 4, and an inner diameter dial indicator 1. The rotating block 2 is provided with two axially parallel through holes A5 and through holes B6, and the upper end of the positioning screw 4 is connected to the through hole A5. In cooperation, the lower end of the positioning screw 4 is provided with a tapered thread, and the measuring rod 7 of the inner diameter dial indicator 1 is matched with the through hole B6. The rotating block 2 is a cylinder, and the axis of the through hole A5 coincides with the axis of the cylinder. The rotating block 2 is provided with a through hole in the radial direction of the through hole B6 and is threadedly connected with the fastening bolt 3 , and the measuring rod 7 is matched with the through hole B6 through the fastening bolt 3 . The rotary block 2 has a notch on the cylindrical body, and the through hole threaded with the fastening bolt 3 is arranged on the notch.

When the threaded hole verticality inspection tool of this embodiment is manufactured, the threaded portion of the positioning screw 4 should be a taper thread of the same specification as the thread of the workpiece to be tested, and the length of the thread is determined according to the actual workpiece to ensure good positioning. The perpendicularity between the two ends of the rotating block 2 and the through hole A5 and through hole B6 must be less than 0.005mm, and the roughness of the end surface must meet the requirements of the drawing. Both the positioning screw 4 and the rotating block 2 need to be quenched and meet the requirements. The holes and shafts of the two require a clearance fit, and the fit clearance is not greater than 0.005mm. After the fit, the rotation must be flexible.

Before the measurement, screw the positioning screw 4 into the screw hole of the workpiece to be measured, then install the rotating block 2 on the positioning screw 4, loosen the fastening bolt 3, and adjust the pointer of the inner diameter indicator 1 (pre-adjust the pointer to make it Insert it to the rotating block 2 toward the zero position, pay attention to adjust the height of the probe 8, (make the watch hand rotate clockwise 0.30mm) the probe 8 is in contact with the surface to be measured.

When measuring, pay attention to manually rotate the rotary block 2 at a constant speed, rotate it several times, and observe the maximum change of the pointer of the inner diameter dial indicator 1, and it is not allowed to exceed 90% of the workpiece requirement.

This embodiment is suitable for detecting the perpendicularity between the screw hole of the workpiece and the end face of the screw hole. The diameter of the detected surface is above Φ25 (centered on the positioning screw hole), and the verticality of the detected hole is required to be no less than 0.03mm.

Claims (4)

1, a kind of threaded hole verticality cubing, it is characterized in that, comprise spill spin block (2), positioning screw (4) and dial bore gage (1), described spill spin block (2) is provided with two axial parallel through hole A (5) and through hole B (6), match with through hole A (5) in positioning screw (4) upper end, positioning screw (4) lower end is provided with the screw thread of band tapering, and the gauge rod (7) of dial bore gage (1) matches with through hole B (6).

2, threaded hole verticality cubing according to claim 1 is characterized in that, described spill spin block (2) is a right cylinder, and the axis of through hole A (5) overlaps in cylinder axis.

3, threaded hole verticality cubing according to claim 1 and 2 is characterized in that, described spill spin block (2) upwards is provided with through hole in through hole B (6) footpath and is threaded with fastening bolt (3), and gauge rod (7) matches with through hole B (6) by fastening bolt (3).

4, threaded hole verticality cubing according to claim 3 is characterized in that, described spill spin block (2) is for there being the right cylinder of a breach, and the described through hole that is threaded with fastening bolt (3) is located on the breach.

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