Adjustable opening gauge

Abstract

The utility model relates to the field of casting detection, and particularly discloses an adjustable opening gauge which comprises a rod piece and a sleeve connected with the rod piece in a sliding mode, a sliding strip groove is formed in the sleeve in the length direction, scales are arranged on the side edge of the sliding strip groove, and a marking needle sliding along the sliding strip groove is arranged on the rod piece. The ends, away from each other, of the rod piece and the sleeve are both connected with abutting blocks. According to the utility model, the rod piece and the sleeve slide to detect the size of the inner opening of the casting and can be adjusted in a sliding manner, the device is suitable for detecting the size of the casting with inner openings of different sizes, the detection efficiency is high, batch full detection can be realized, and the production efficiency of the casting is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of casting detection, in particular to an adjustable opening inspection tool. Background Art

[0002] The production process of castings involves many steps, including mold making, shell making, smelting, sand cleaning, heat treatment, and finishing. These steps are complex and time-consuming, and many factors can affect deformation, causing castings to not meet the drawing dimensions. This creates a significant workload for finishing and polishing, and if not properly controlled, the product can even be scrapped, resulting in a significant amount of waste. Therefore, in actual production, it is imperative to carefully control each step and take effective measures to reduce casting deformation.

[0003] In actual production, castings are mainly deformed by the following factors: ① Since the molding wax is a paste wax, the mold material causes deformation in thick and large parts during the shrinkage process; ② The wax mold does not have enough pressure holding time in the mold cavity, the mold is removed too early, and improper cooling after the mold is removed causes deformation; ③ Shell making is a relatively important process. Improper control of workshop temperature and humidity will cause the mold shell to deform, the mold shell strength is low, and the mold shell is deformed after dewaxing; ④ The casting is not placed properly after heat treatment. In order to solve the above problems, the casting needs to be corrected after deformation. Usually, a vernier caliper is used to check whether it meets the requirements of the drawing. Although the vernier caliper can be used to inspect the external and internal dimensions of the casting, when using a vernier caliper to inspect the inner diameter of some open-gap castings, the efficiency is low and it is difficult to quickly perform a full batch inspection, which affects the processing efficiency of the casting. For this reason, the present application proposes an adjustable open-gap inspection fixture to solve the above technical problems. Utility Model Content

[0004] In view of the existing problems, the utility model provides an adjustable opening gauge, which can effectively solve the problems raised in the background technology.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions:

[0006] An adjustable opening inspection tool includes a rod and a sleeve slidably connected to the rod, the sleeve is provided with a sliding groove along the length direction and a scale is provided on the side of the sliding groove, the rod is provided with a marking pin that slides along the sliding groove, and the ends of the rod and the sleeve that are away from each other are both connected to an abutment block.

[0007] As a further solution of the present invention: the rod is provided with a first plane along the axial direction, and the marking pin is provided on one end of the first plane close to the sleeve.

[0008] As a further solution of the present invention: a sealing cover is provided at one end of the sleeve away from the rod, and the sealing cover seals an opening at one end of the sliding strip groove.

[0009] As a further solution of the present invention: a spring is fixedly connected to the inner side of the sealing cover, and the spring abuts against the end surface of the rod.

[0010] As a further solution of the present invention: the outer side surface of the sealing cover and the end of the rod away from the sleeve are both provided with threaded heads, and one side surface of the abutment block is provided with a threaded sleeve, and the threaded sleeve is threadedly connected to the threaded head.

[0011] As a further solution of the present invention: the outer side surface of the abutting block is flat or arc-shaped.

[0012] As a further solution of the present invention: a handle is fixedly connected to the outer side of the sleeve.

[0013] As a further solution of the present invention: there are two scales and they are respectively arranged on both sides of the sliding bar groove, and the two scales are staggered by a scale interval.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the present invention detects the size of the inner opening of the casting through the sliding of the rod and the sleeve and can be slidably adjusted, is suitable for dimensional detection of castings with inner openings of different sizes, has high detection efficiency, and can realize full batch inspection, greatly improving the production efficiency of castings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the overall structure of an adjustable opening inspection fixture;

[0016] Figure 2 This is a schematic diagram of the overall structure of an adjustable opening inspection fixture;

[0017] Figure 3 This is a schematic diagram of a casting size inspection using an adjustable opening inspection fixture.

[0018] In the figure: 1. Rod; 2. Sleeve; 3. Sliding groove; 4. Scale; 5. Marking needle; 6. Abutment block; 7. First plane; 8. Sealing cover; 9. Spring; 10. Threaded head; 11. Threaded sleeve; 12. Handle. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Combine Figures 1 to 3The utility model discloses a adjustable open gauge tool for detecting the inner opening size of casting, which comprises a rod 1 and a sleeve 2 slidably connected with the rod 1. One end of the sleeve 2 is open to facilitate the sliding insertion of the rod 1 into the sleeve 2. The cross-sectional size of the rod 1 is consistent with the inner diameter size of the sleeve 2. The sleeve 2 is provided with a sliding slot 3 along the length direction, and a scale 4 is arranged on the side of the sliding slot 3. The scale number of the scale 4 decreases away from the end of the rod 1. A pointer 5 is arranged on the rod 1 to slide along the sliding slot 3. The scale number pointed by the pointer 5 is the inner diameter size. The end of the rod 1 and the end of the sleeve 2 away from each other are both connected with an abutting block 6.

[0021] The rod 1 is provided with a first plane 7 along the axial direction. The pointer 5 is arranged at the end of the first plane 7 close to the sleeve 2. The first plane 7 is arranged to avoid the damage of the pointer 5 caused by the rotation of the rod 1 relative to the sleeve 2.

[0022] The end of the sleeve 2 away from the rod 1 is provided with a sealing cover 8. The sealing cover 8 seals the opening of one end of the sliding slot 3. The one end of the sliding slot 3 is open to facilitate the installation of the rod 1 and is sealed by the sealing cover 8. The inner side of the sealing cover 8 is fixedly connected with a spring 9. The spring 9 abuts against the end surface of the rod 1. The spring 9 facilitates the mutual separation of the rod 1 and the sleeve 2 to adapt to the detection of the inner opening.

[0023] The outer side of the sealing cover 8 and the end of the rod 1 away from the sleeve 2 are both provided with a threaded head 10. One side of the abutting block 6 is provided with a threaded sleeve 11. The threaded sleeve 11 is threadedly connected with the threaded head 10 to facilitate the disassembly and replacement of the abutting block 6. The outer side of the abutting block 6 is a plane or an arc to adapt to the detection of the inner opening of different planes.

[0024] The outer side of the sleeve 2 is fixedly connected with a handle 12 to facilitate the compression of the sleeve 2 and the rod 1.

[0025] The scale 4 is two and is arranged on the two sides of the sliding slot 3. The two scales 4 are staggered by one scale interval. During measurement, the scale numbers of the two scales 4 are observed and the average is taken to improve the measurement accuracy.

[0026] The working principle of the utility model is as follows: one end of the rod 1 is attached to the inner opening of the casting. The handle 12 is pressed. The abutting block 6 at the other end of the sleeve 2 is attached to the inner opening of the casting. The scale 4 pointed by the pointer 5 is the size of the inner opening. The sliding of the rod 1 and the sleeve 2 can detect the size of the inner opening of the casting and can be adjusted. It is suitable for detecting the size of the casting with different sizes of inner openings. The detection efficiency is high. Batch detection can be realized. The production efficiency of the casting is greatly improved.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable opening gauge, characterized in that: It includes a rod and a sleeve slidably connected to the rod, the sleeve is provided with a sliding groove along the length direction and a scale is provided on the side of the sliding groove, the rod is provided with a marking pin that slides along the sliding groove, and the ends of the rod and the sleeve that are away from each other are both connected with abutment blocks.

2. The adjustable opening gauge according to claim 1, characterized in that: The rod is provided with a first plane along the axial direction, and the marking pin is provided on one end of the first plane close to the sleeve.

3. The adjustable opening gauge according to claim 1, characterized in that: A sealing cover is provided at one end of the sleeve away from the rod, and the sealing cover seals an opening at one end of the sliding strip groove.

4. The adjustable opening gauge according to claim 3, characterized in that: A spring is fixedly connected to the inner side of the sealing cover, and the spring abuts against the end surface of the rod.

5. The adjustable opening gauge according to claim 3, characterized in that: The outer side surface of the sealing cover and the end of the rod away from the sleeve are both provided with threaded heads, and one side surface of the abutment block is provided with a threaded sleeve, and the threaded sleeve is threadedly connected to the threaded head.

6. The adjustable opening gauge according to claim 1, characterized in that: The outer side surface of the abutment block is flat or arc-shaped.

7. The adjustable opening gauge according to claim 1, characterized in that: The outer side of the sleeve is fixedly connected with a handle.

8. The adjustable opening gauge according to claim 1, characterized in that: There are two scales, which are respectively arranged on both sides of the sliding bar groove, and the two scales are staggered by a scale spacing.

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