Chamfer gauge

Abstract

The utility model discloses a chamfer gauge, which relates to the field of gauges and comprises an outer tube, an outer tube high plane is arranged at the upper end of the outer tube, a limit hole is arranged in the middle of the outer tube, an outer tube inner hole is arranged in the center of the outer tube, an outer tube lower end face is arranged at the lower end of the outer tube, an outer tube low plane is arranged at the upper end of the outer tube, and the limit hole is connected and communicated with the outer tube inner hole. The height difference between the outer pipe high plane and the outer pipe low plane is set to be H; an inner column is slidably mounted in the center of the outer tube, the upper end of the inner column is an inner column upper plane, a limiting groove is formed in the side face of the inner column, a detection cone is mounted at the lower end of the inner column, and the taper of the detection cone is set to be beta; the inner column and the outer pipe are installed through the outer pipe inner hole. When the device is used, the diameter of the chamfer can be rapidly measured; meanwhile, the device has the characteristics of simple structure, high detection precision, convenience in use, low manufacturing cost and the like.

Description

Technical Field

[0001] The utility model relates to the field of inspection tools, in particular to a chamfering inspection tool. Background Art

[0002] During the machining process, some sharp corners on the workpiece need to be chamfered to reduce stress concentration or facilitate assembly. Some precision mechanical parts have high quality requirements for chamfers. If the actual chamfers differ greatly from the requirements of the drawings, they cannot meet the design or use requirements. During the production process, a gauge that can accurately measure the chamfer size of the inner hole is required. In order to solve the problem of low efficiency of chamfer measurement in the prior art chamfer gauge, the utility model provides a structure including an outer tube and an inner column. Utility Model Content

[0003] The utility model aims to provide a chamfering inspection tool which can quickly measure the chamfer diameter during use; meanwhile, the utility model has the characteristics of simple structure, high detection accuracy, convenient use, low manufacturing cost and the like.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a chamfering inspection tool, including an outer tube, the upper end of the outer tube is an outer tube high plane, a limiting hole is arranged in the middle of the outer tube, an outer tube inner hole is arranged in the center of the outer tube, an outer tube lower end surface is arranged at the lower end of the outer tube, an outer tube low plane is arranged at the upper end of the outer tube, the limiting hole is connected and conducted with the outer tube inner hole, and the height difference between the outer tube high plane and the outer tube low plane is set to H; an inner column is slidably installed at the center of the outer tube, the upper end of the inner column is the inner column upper plane, and a limiting groove is arranged on the side of the inner column A detection cone is installed at the lower end of the inner column, and the taper of the detection cone is set to β; the inner column is installed with the outer tube through the inner hole of the outer tube, and a limit screw is fixedly installed on the outer tube. The limit screw enters the limit groove through the limit hole to fix the outer tube and the inner column. The chamfer diameter of the chamfer to be processed is set to D, the upper deviation of D is A1, the lower deviation is A2, the chamfer angle is set to θ, the β taper is less than θ, and the height difference H between the high plane of the outer tube and the low plane of the outer tube is ((A1+A2) / 2)*arctan(β / 2).

[0005] Furthermore, the flatness requirement for the outer tube high plane, the outer tube lower end surface and the outer tube low plane is 0.005mm, the coaxiality requirement for the outer tube inner hole and the outer tube is 0.005mm, the flatness requirement for the inner column upper plane is 0.005mm, and the assembly clearance between the inner column and the outer tube is 0.01mm.

[0006] Furthermore, the limiting screw enters the limiting groove through the limiting hole.

[0007] Furthermore, when the inner column slides in the outer tube and the upper plane of the inner column remains flush with the high plane of the outer tube, the pitch circle diameter at the position where the detection cone is flush with the lower end surface of the outer tube is set to D1, and D1 is equal to D-A2.

[0008] Furthermore, the part to be chamfered is provided with a chamfering machine for adding a surface, a chamfering machine for adding a hole and a chamfer.

[0009] Compared with the prior art, the present invention has the following advantages: (1) the present invention can quickly measure the chamfer diameter during use; at the same time, it has the characteristics of simple structure, high detection accuracy, convenient use, and low manufacturing cost; (2) during the inspection process, the present invention can directly determine whether the chamfer diameter is qualified based on the positional relationship between the high plane and the low plane of the outer tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a front view of a chamfering inspection tool of the utility model.

[0011] Figure 2 It is a front view of an outer tube of a chamfering inspection fixture of the utility model.

[0012] Figure 3 It is a front view of an inner column of a chamfering inspection fixture of the utility model.

[0013] Figure 4 The utility model is a schematic diagram of chamfering detected by a chamfering inspection tool.

[0014] Figure numbers: 1-outer tube; 2-inner column; 3-limiting screw; 11-high plane of outer tube; 12-limiting hole; 13-inner hole of outer tube; 14-lower end surface of outer tube; 15-lower plane of outer tube; 21-upper plane of inner column; 22-limiting groove; 23-detection cone; 31-chamfering machine surface; 32-chamfering machine hole; 33-chamfering. DETAILED DESCRIPTION

[0015] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0016] Example: Figure 1-Figure 4The chamfering inspection tool shown in the figure comprises an outer tube 1, the upper end of the outer tube 1 is an outer tube high plane 11, a limiting hole 12 is arranged in the middle of the outer tube 1, an outer tube inner hole 13 is arranged in the center of the outer tube 1, an outer tube lower end surface 14 is arranged at the lower end of the outer tube 1, an outer tube low plane 15 is arranged at the upper end of the outer tube 1, the limiting hole 12 is connected and communicated with the outer tube inner hole 13, and the height difference between the outer tube high plane 11 and the outer tube low plane 15 is set to H; an inner column 2 is slidably installed at the center of the outer tube 1, the upper end of the inner column 2 is an inner column upper plane 21, and a limiting groove 22 is arranged on the side of the inner column 2. A detection cone 23 is installed at the lower end, and the taper of the detection cone 23 is set to β; the inner column 2 is installed with the outer tube 1 through the inner hole 13 of the outer tube, and a limit screw 3 is fixedly installed on the outer tube 1. The limit screw 3 enters into the limit groove 22 through the limit hole 12, and the outer tube 1 and the inner column 2 are fixedly connected. The chamfer diameter to be processed is set to D, the upper deviation of D is A1, and the lower deviation is A2. The chamfer angle is set to θ, and the β taper is less than θ. The height difference H between the outer tube high plane 11 and the outer tube low plane 15 is ((A1+A) / 2)*arctan(β / 2).

[0017] The flatness requirement for the outer tube high plane 11, the outer tube lower end surface 14 and the outer tube low plane 15 is 0.005mm, the coaxiality requirement for the outer tube inner hole 13 and the outer tube 1 is 0.005mm, the flatness requirement for the inner column upper plane 21 is 0.005mm, and the assembly clearance between the inner column 2 and the outer tube 1 is 0.01mm.

[0018] The limiting screw 3 enters the limiting groove 22 through the limiting hole 12, plays a limiting role, and allows the inner column 2 and the outer tube 1 to slide relative to each other along the axis.

[0019] When the inner column 2 slides in the outer tube 1 and the inner column upper plane 21 is flush with the outer tube high plane 11, the pitch circle diameter at the position where the detection cone 23 is flush with the outer tube lower end surface 14 is set to D1, and D1 is equal to D-A2. The tolerance of D1 is ±0.005mm.

[0020] The part to be chamfered is provided with a chamfering machine surface 31, a chamfering machine hole 32 and a chamfer 33. When using the utility model, the lower end face 14 of the outer tube is fitted with the chamfering machine surface 31, the detection cone 23 falls into the chamfering machine hole 32, the surface of the detection cone 23 contacts the upper edge of the chamfer 33, and the positional relationship between the upper plane 21 of the inner column and the high plane 11 of the outer tube and the low plane 15 of the outer tube is observed. If the upper plane 21 of the inner column is between the high plane 11 of the outer tube and the low plane 15 of the outer tube, the diameter of the chamfer 33 is qualified; if the upper plane 21 of the inner column is higher than the high plane 11 of the outer tube or lower than the low plane 15 of the outer tube, the diameter of the chamfer 33 is unqualified.

Claims

1. A chamfering inspection tool, comprising an outer tube (1), characterized in that: The upper end of the outer tube (1) is an outer tube high plane (11), a limiting hole (12) is arranged in the middle of the outer tube (1), an outer tube inner hole (13) is arranged in the center of the outer tube (1), an outer tube lower end surface (14) is arranged at the lower end of the outer tube (1), an outer tube low plane (15) is arranged at the upper end of the outer tube (1), the limiting hole (12) is connected to the outer tube inner hole (13), and the height difference between the outer tube high plane (11) and the outer tube low plane (15) is set to H; an inner column (2) is slidably mounted at the center of the outer tube (1), the upper end of the inner column (2) is an inner column upper plane (21), a limiting groove (22) is arranged on the side of the inner column (2), and a mounting groove (24) is arranged at the lower end of the inner column (2). A detection cone (23) is provided, and the taper of the detection cone (23) is set to β; the inner column (2) is installed with the outer tube (1) through the inner hole (13) of the outer tube, and a limit screw (3) is fixedly installed on the outer tube (1), and the limit screw (3) enters into the limit groove (22) through the limit hole (12), and the outer tube (1) and the inner column (2) are fixedly connected, and the chamfer diameter of the chamfer to be processed is set to D, the upper deviation of D is A outer tube (1), and the lower deviation is A inner column (2), and the chamfer angle is set to θ, and the taper β is less than θ, and the height difference H between the outer tube high plane (11) and the outer tube low plane (15) is ((A1+A2) / 2)*arctan(β / 2).

2. A chamfering gauge according to claim 1, characterized in that: The flatness requirement of the outer tube high plane (11), the outer tube lower end surface (14) and the outer tube low plane (15) is 0.005 mm, the coaxiality requirement of the outer tube inner hole (13) and the outer tube (1) is 0.005 mm, the flatness requirement of the inner column upper plane (21) is 0.005 mm, and the assembly clearance between the inner column (2) and the outer tube (1) is 0.01 mm.

3. A chamfering gauge according to claim 2, characterized in that: The limiting screw (3) enters the limiting groove (22) through the limiting hole (12).

4. A chamfering gauge according to claim 3, characterized in that: When the inner column (2) slides in the outer tube (1) and the upper plane (21) of the inner column is kept flush with the high plane (11) of the outer tube, the pitch circle diameter at the position where the detection cone (23) is flush with the lower end surface (14) of the outer tube is set to D1, D1 is equal to D-A2, and the tolerance of D1 is ±0.005mm.

5. A chamfering gauge according to claim 4, characterized in that: The part to be chamfered is provided with a chamfering machine surface (31), a chamfering machine hole (32) and a chamfer (33).

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