Caliper for measuring the width of an internal groove

Abstract

The utility model belongs to the field of measuring tool, specifically speak to the caliper for measuring the inner groove width, including the main ruler body and the vernier body, the bottom fixed connection of main ruler body has the outer measuring claw no.

Description

Technical Field

[0001] This utility model relates to the field of measuring tools, specifically a caliper for measuring the width of an inner groove. Background Technology

[0002] Calipers are a common measuring tool in our daily lives, but in the manufacturing industry, special measuring calipers are required for measurement work such as machining and parts inspection.

[0003] Chinese patent application number CN88213118.4 provides a caliper for comprehensively measuring hole diameter and hole spacing. This method considers the two holes to meet the specified lower deviation requirement if they pass through both through ends of the measuring head. Conversely, it considers the two holes to meet the specified upper deviation requirement if neither passes through the two stop ends of the measuring head.

[0004] Existing calipers are mainly used for measuring outer diameter, inner diameter, and depth. However, when measuring the width of inner grooves such as U-shaped grooves and concave grooves, the measuring jaws of conventional calipers are difficult to penetrate into the groove for effective clamping, which easily leads to large reading errors. As a result, the measurement effect of the calipers is reduced. To address the above problems, a caliper for measuring the width of inner grooves is proposed. Utility Model Content

[0005] To overcome the shortcomings of existing technology, conventional calipers are mainly used for measuring outer diameter, inner diameter and depth. However, when measuring the width of inner grooves such as U-shaped grooves and recesses, the measuring jaws of conventional calipers are difficult to penetrate into the groove for effective clamping, which easily leads to large reading errors. This results in a reduction in the measurement effect of the calipers. This utility model proposes a caliper for measuring the width of inner grooves.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a caliper for measuring the width of an inner groove, including a main scale body and a vernier scale body; an outer measuring jaw one is fixedly connected to the bottom of the main scale body, and an outer measuring jaw two is installed at the bottom of the vernier scale body. The inner ends of both the outer measuring jaw two and the outer measuring jaw one are provided with sliding grooves, and a probe part is slidably connected to the inner end of the sliding groove. An assembly block is bolted to the outer ends of the outer measuring jaw two and the outer measuring jaw one. An adjustment groove is provided at the inner end of the assembly block, and a pull rod is slidably connected to the inner end of the adjustment groove. By installing the probe part, the measurement effect of the caliper is improved.

[0007] Preferably, a pull head is fixedly connected to the top of the pull rod, and a reset ring is sleeved on the outer end of the pull rod. By installing the reset ring, the convenience of using the caliper components is improved.

[0008] Preferably, a guide ring is installed at the bottom end of the pull rod, and a clamp is installed at the bottom end of the guide ring. By installing the clamp, the probe part can be prevented from falling off during measurement.

[0009] Preferably, the inner end of the guide ring is slidably connected to symmetrically distributed guide rods, and both ends of the guide rods are fixedly connected to limit heads. By installing the guide rods and limit heads, the position adjustment of the clamp head by the adjusting rod can be made more stable.

[0010] Preferably, mounting blocks are fixedly connected to both ends of the assembly block. By setting the mounting blocks, the installation and connection between the assembly block and the components of the device can be made more convenient.

[0011] Preferably, a display is installed on the outer end of the vernier scale body, an inner measuring jaw one is installed on the top end of the main scale body, and an inner measuring jaw two is installed on the top end of the vernier scale body. By installing inner measuring jaw one and inner measuring jaw two, the measurement effect of the caliper is further improved.

[0012] Preferably, the top of the vernier scale body is provided with a locking knob, and the inner end of the sliding groove is provided with symmetrically distributed limiting grooves. By setting the limiting grooves, the adjustment of the probe part can be made more stable.

[0013] Preferably, the top of the probe portion has equally spaced slots, which can be used to easily position it with the card head.

[0014] The advantages of this utility model are:

[0015] 1. This utility model, through the structural design of the probe section, allows the device to measure workpieces with deep grooves. By pulling a pair of pull heads, the pull rod adjusts its position under external force, causing the clamp to release the positioning probe section. This facilitates the sliding of the probe section within the sliding groove. The probe section has markings on its exterior to help the measuring personnel observe its extension length and determine the groove position. A pair of extendable and retractable probe sections are inserted into the inner groove, with the two probe sections contacting the inner wall of the groove. The vernier scale body slides to adjust the distance between the two probes, and the current distance value, which is the width of the inner groove, is displayed through the display mechanism. This allows the caliper to penetrate deep into the groove wall for clamping and measurement, reducing errors caused by positional deviations. It is suitable for measuring the width of inner grooves with various structures such as U-grooves and keyways, improving the measurement effect of the caliper.

[0016] 2. Through the structural design of the limiting groove, the limiting groove can form a limiting structure at both ends of the sliding groove. When the probe part is adjusted, it can guide the sliders at both ends, making the adjustment of the probe part more stable. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a front view schematic diagram of the probe section of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the probe part of this utility model;

[0021] Figure 4 This is an exploded three-dimensional structural diagram of the assembly block of this utility model;

[0022] Figure 5 For the present utility model Figure 4 A magnified three-dimensional structural diagram of point A in the middle.

[0023] In the diagram: 1. Main scale body; 2. Vernier scale body; 3. Display; 4. Inner measuring jaw one; 5. Outer measuring jaw one; 6. Inner measuring jaw two; 7. Outer measuring jaw two; 8. Locking knob; 9. Sliding groove; 10. Limiting groove; 11. Probe part; 12. Slot; 13. Assembly block; 14. Mounting block; 15. Pull rod; 16. Pull head; 17. Reset ring; 18. Guide ring; 19. Slot; 20. Guide rod; 21. Limiting head; 22. Adjustment groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0025] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail;

[0026] This application discloses calipers for measuring the width of an inner groove. (See also...) Figures 1-5This caliper, used for measuring the width of an inner groove, includes a main scale body 1 and a vernier scale body 2. An outer measuring jaw 5 is fixedly connected to the bottom of the main scale body 1, and an outer measuring jaw 7 is installed at the bottom of the vernier scale body 2. Both the outer measuring jaw 7 and the outer measuring jaw 5 have sliding grooves 9 at their inner ends. A probe part 11 is slidably connected to the inner end of each sliding groove 9. An assembly block 13 is bolted to the outer ends of the outer measuring jaw 7 and the outer measuring jaw 5. An adjustment groove 22 is provided at the inner end of the assembly block 13, and a pull rod 15 is slidably connected to the inner end of the adjustment groove 22. By installing the probe part 11, when the device needs to measure a workpiece with a deep groove, a pair of pull heads 16 are pulled, and under external force, the pull rod 15 generates... The position adjustment causes the clamp head 19 to release the positioning probe part 11, which can then easily slide the probe part 11 inside the sliding groove 9. The probe part 11 is marked on the outside to help the measuring personnel observe the extension length of the probe part 11 and help determine the position of the clamp groove 12. A pair of extendable and retractable probe parts 11 are inserted into the inner groove respectively. The two probe parts 11 contact the inner wall of the inner groove. The vernier scale body 2 slides to adjust the distance between the two probes. At the same time, the current distance value is displayed through the display mechanism, which is the width of the inner groove. This allows the caliper to be inserted deep into the inner wall of the groove for clamping and measurement during use, reducing errors caused by position deviation. It is suitable for measuring the width of inner grooves of various structures such as U-shaped grooves and keyways, and improves the measurement effect of the caliper.

[0027] Reference Figure 1 , Figure 4 and Figure 5 A pull head 16 is fixedly connected to the top of the pull rod 15, and a reset ring 17 is sleeved on the outer end of the pull rod 15. By installing the reset ring 17, when the measuring personnel pull the pull head 16 and the pull rod 15, the elastic force of the reset ring 17 allows the pull rod 15 and the connected clamp 19 to be easily displaced and reset. This allows the clamp 19 to position the probe part 11 or to release its position for easy sliding, thus improving the convenience of using the caliper assembly.

[0028] Reference Figure 4 and Figure 5 A guide ring 18 is installed at the bottom of the pull rod 15, and a clip 19 is installed at the bottom of the guide ring 18. By installing the clip 19, the clip 19 can be engaged with the clip slot 12, so that the probe part 11 will not fall off during measurement.

[0029] Reference Figure 4 and Figure 5The inner end of the guide ring 18 is slidably connected to symmetrically distributed guide rods 20. Both ends of the guide rods 20 are fixedly connected to limit heads 21. By installing the guide rods 20 and the limit heads 21, when the pull rod 15 is adjusted, the moving pull rod 15 and the guide ring 18 slide outside the guide rods 20. With the limit of the adjustment groove 22, the adjustment pull rod 15 can make the position adjustment of the clamp 19 more stable and prevent it from falling off.

[0030] Reference Figures 1-3 The two ends of the assembly block 13 are fixedly connected to the mounting blocks 14. By setting the mounting blocks 14, a pair of mounting blocks 14 can make the assembly block 13 have an installation structure. The assembly block 13 can be more conveniently installed and connected to the components of the device by bolts.

[0031] Reference Figure 1 and Figure 2 The vernier scale body 2 is equipped with a display 3 at its outer end, the main scale body 1 is equipped with an inner measuring jaw 4 at its top end, and the vernier scale body 2 is equipped with an inner measuring jaw 6 at its top end. By installing the inner measuring jaw 4 and the inner measuring jaw 6, both of which are L-shaped structures extending outward, the dimensions can be read by inserting the inner measuring jaw 4 and the inner measuring jaw 6 into the slots, which further improves the measurement effect of the caliper.

[0032] Reference Figure 1 The top of the vernier scale body 2 is provided with a locking knob 8, and the inner end of the sliding groove 9 is provided with symmetrically distributed limiting grooves 10. By setting the limiting grooves 10, the limiting grooves 10 can form a limiting structure at both ends of the sliding groove 9. When the probe part 11 is adjusted, it can guide the sliders at both ends, making the adjustment of the probe part 11 more stable.

[0033] Reference Figure 3 The probe part 11 has slots 12 that are evenly distributed at the top. By installing the slots 12, the probe part 11 can be adjusted in position to facilitate positioning with the head 19.

[0034] Working principle: When it is necessary to measure the width of the inner groove on a part, insert a pair of probes 11 of this caliper into the inner groove so that the two probes 11 contact the inner wall of the inner groove. The vernier scale body 2 slides to adjust the distance between the two probes 11. At the same time, the current distance value is displayed on the display 3, which is the width of the inner groove. During measurement, pull a pair of pull heads 16. Under the external force, the pull rod 15 will adjust the position and drive the locking head 19 to release the positioning probe 11, so that the probe 11 can slide easily in the inner end of the sliding groove 9. The probe 11 is marked on the outside to help the measuring personnel observe the extension length of the probe 11 and help determine the position of the locking groove 12. The limiting groove 10 can form a limiting structure at both ends of the sliding groove 9. When the probe 11 is adjusted in position, it can guide the sliders at both ends, so that the probe 11 can be adjusted in length according to the measurement needs.

[0035] The contents not described in detail in this specification do not improve upon this application and are all prior art known to those skilled in the art, and therefore are not described in detail.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A caliper for measuring the width of an inner groove, characterized in that: It includes a main scale body (1) and a vernier scale body (2); the bottom of the main scale body (1) is fixedly connected to an external measuring claw one (5), and the bottom end of the vernier scale body (2) is installed with an external measuring claw two (7). The inner ends of the external measuring claw two (7) and the external measuring claw one (5) are provided with sliding grooves (9). The inner end of the sliding groove (9) is slidably connected to a probe part (11). The outer ends of the external measuring claw two (7) and the external measuring claw one (5) are connected to an assembly block (13) by bolts. The inner end of the assembly block (13) is provided with an adjustment groove (22), and the inner end of the adjustment groove (22) is slidably connected to a pull rod (15).

2. The caliper for measuring the width of an inner groove according to claim 1, characterized in that: The top end of the pull rod (15) is fixedly connected to a pull head (16), and the outer end of the pull rod (15) is fitted with a reset ring (17).

3. The caliper for measuring the width of an inner groove according to claim 2, characterized in that: The bottom end of the pull rod (15) is equipped with a guide ring (18), and the bottom end of the guide ring (18) is equipped with a clip (19).

4. The caliper for measuring the width of an inner groove according to claim 3, characterized in that: The inner end of the guide ring (18) is slidably connected to guide rods (20) that are symmetrically distributed, and both ends of the guide rods (20) are fixedly connected to limit heads (21).

5. The caliper for measuring the width of an inner groove according to claim 1, characterized in that: The assembly block (13) is fixedly connected to the two ends of the mounting block (14).

6. The caliper for measuring the width of an inner groove according to claim 1, characterized in that: The vernier scale body (2) is equipped with a display (3) at its outer end, the main scale body (1) is equipped with an inner measuring jaw one (4) at its top end, and the vernier scale body (2) is equipped with an inner measuring jaw two (6) at its top end.

7. The caliper for measuring the width of an inner groove according to claim 6, characterized in that: The top of the vernier scale body (2) is provided with a locking knob (8), and the inner end of the sliding groove (9) is provided with symmetrically distributed limiting grooves (10).

8. The caliper for measuring the width of an inner groove according to claim 1, characterized in that: The top of the probe part (11) is provided with slots (12) that are evenly distributed.

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