Large-block verification auxiliary tool

Abstract

The utility model discloses a large-block verification auxiliary tool, which comprises a supporting main body as a supporting structure of the whole tool and a sliding guide rail, the two sliding frames are arranged on the supporting main body in a sliding mode, each sliding frame is in an H shape and comprises a transverse plate, a left vertical plate and a right vertical plate, and the transverse plates are arranged between the left vertical plates and the right vertical plates and stretch across the supporting main body, so that the sliding frames can slide in the length direction of the supporting main body; first through holes are transversely formed in the middle parts of the left vertical beam and the right vertical plate and penetrate through the left and right end surfaces; a locking screw is arranged on the outer side of the lower part of the left vertical plate or the right vertical beam, and the locking screw can be close to or far away from the supporting main body; the cylindrical rod is arranged between the left vertical plate and the right vertical plate, and the two ends of the cylindrical rod are in interference fit with the first through holes. According to the tool, the cylindrical rod is in contact with the moxa point of the gauge block, so that the contact point can be quickly determined, the measurement accuracy is improved, and the operation is simple.

Description

Technical Field

[0001] This utility model relates to the field of measuring tool auxiliary technology, and in particular to a large block calibration auxiliary tooling. Background Technology

[0002] Gauge blocks, as key measuring tools used in precision measurement, are susceptible to deformation during the measurement process due to factors such as gravity, thermal expansion, and internal stress. This deformation, affecting both the measured workpiece and instrument components, is a significant factor impacting the accuracy of measurement results. This is especially true for large workpieces placed horizontally, where the bending deformation caused by their own weight has a more pronounced negative impact on the measurement results. Therefore, to ensure accurate and reliable measurement results, deformation caused by various factors should be minimized as much as possible during the measurement process—this is the principle of minimum deformation in measurement. In the calibration of large gauge blocks, the use of Air Force point support can minimize deformation. Air Force points are located at a distance of 0.211L from each end face of the gauge block (where L is the nominal dimension of the gauge block). The purpose of setting Air Force points is to ensure that when the object is placed horizontally, the two end faces remain parallel under the influence of gravity, while simultaneously controlling the degree of deformation to a minimum.

[0003] In existing technologies, gauge block calibration typically involves fixing the gauge block to the worktable of a length measuring instrument and clamping it using the worktable's fixtures. However, this clamping method has many drawbacks. The positioning is not accurate enough, and it usually requires finding two additional cylindrical bars and placing them at the Elysium points of the gauge block before clamping it. However, in actual operation, the cylindrical bars often change position, both during and after clamping. Once this happens, the position of the cylindrical bars must be readjusted, which not only leads to low clamping efficiency but also makes it difficult to guarantee positioning accuracy. As a result, it is difficult to achieve the ideal calibration clamping state and to meet the principle of minimum deformation in length measurement, thus adversely affecting the calibration accuracy.

[0004] The above background information is provided only to aid in understanding the concept and technical solution of this utility model. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Utility Model Content

[0005] The purpose of this invention is to propose a large-block calibration auxiliary tooling to solve the technical problem in the prior art where the position of the cylindrical bar is easily changed when clamping the block.

[0006] Therefore, this utility model proposes a large-block inspection auxiliary tooling.

[0007] Preferably, the present invention may also have the following technical features:

[0008] A mass production testing auxiliary tooling includes:

[0009] The main support structure serves as the supporting structure for the entire tooling and as the sliding guide rail;

[0010] Two sliding brackets are slidably mounted on the support body. The sliding brackets are "H"-shaped and include a horizontal plate, a left vertical plate, and a right vertical plate. The horizontal plate is positioned between the left and right vertical plates and spans across the support body, allowing the sliding brackets to slide along the length of the support body. A first through hole is provided laterally through the left and right end faces of the left and right vertical beams. A locking screw is provided on the lower outer side of the left or right vertical plate, and the locking screw can be close to or away from the support body.

[0011] A cylindrical rod is disposed between the left and right vertical plates, and both ends are interference-fitted with the first through hole.

[0012] Preferably, it further includes a clamping mechanism disposed above the cylindrical bar for applying pressure to the gauge block from top to bottom to clamp the gauge block.

[0013] Preferably, the clamping mechanism includes a mounting plate and a plurality of clamping screws. The upper ends of the left vertical plate and the right vertical plate are respectively disposed at both ends of the mounting plate. The right end of the mounting plate is hinged to the upper end of the right vertical plate, so that the mounting plate can rotate 180° left and right in the vertical direction. The plurality of clamping screws are arranged side by side on the mounting plate and can move up and down so that their lower ends can contact the gauge block to achieve the effect of clamping the gauge block.

[0014] Preferably, the clamping screw is threaded to the mounting plate.

[0015] Preferably, the head of the clamping screw is provided with a handle, which includes one of a ring, a handle, and a grinding head.

[0016] Preferably, the lower end of the clamping screw is inclined, so that the cross-sectional area at the bottom is larger than the cross-sectional area at the middle.

[0017] Preferably, the clamping mechanism further includes a locking pin and a capped pin disposed on the upper part of the left vertical plate; a groove is provided on the left side wall of the upper part of the left vertical plate; a second through hole is provided at one end of the locking pin; the capped pin passes through the second through hole and is in clearance fit with the locking pin; the locking pin can rotate horizontally around the capped pin, so that the other end of the locking pin can be engaged in the groove.

[0018] Preferably, a protrusion that cooperates with the supporting body is provided on the lower inner side of the left or right vertical plate.

[0019] The beneficial effects of this utility model compared with the prior art include:

[0020] 1. The auxiliary tooling for mass block calibration of this utility model includes a support body, two sliding frames and a cylindrical bar. The position of the two sliding frames can be adjusted according to the length of different mass blocks and their corresponding E-points. The position of the sliding frames is fixed with locking screws, thereby minimizing the deformation of the mass blocks caused by gravity. It can meet the E-point support of mass blocks of different specifications, adapt to different mass blocks, is more convenient to use, and significantly improves work efficiency.

[0021] 2. This utility model uses a cylindrical rod to make contact with the gauge block at the point of contact. Due to the shape characteristics of a cylinder, compared with planar contact, the contact area between the cylindrical rod and the gauge block at the point of contact is small. A relatively stable contact point can be formed in a smaller contact area, making it easier to determine the contact position. Especially when inspecting a large number of gauge blocks, the contact point (the position of the contact between the cylindrical rod and the gauge block at the point of contact) can be quickly determined, which is beneficial to improving the accuracy of measurement and can reduce the measurement error caused by unstable contact to a certain extent. In addition, the cylindrical rod is interference-fitted with the first through hole on the left and right vertical plates. With the locking screw fixing the position of the sliding bracket, the position of the cylindrical rod is further fixed. This fixture is convenient for installing gauge blocks and is easy to operate. It can effectively prevent the cylindrical rod from moving during installation and affecting the measurement structure. Attached Figure Description

[0022] Figure 1 This is a front view of a specific embodiment of the present utility model.

[0023] Figure 2 This is a side view of a specific embodiment of the present invention.

[0024] Explanation of reference numerals in the attached drawings: 1-Support body; 2-Sliding frame; 21-Horizontal plate; 22-Left vertical plate; 221-Groove; 222-Protrusion; 23-Right vertical plate; 231-First through hole; 3-Cylindrical rod; 4-Clamping mechanism; 41-Mounting plate; 42-Clamping screw; 421-Handheld part; 43-Locking pin; 44-Capped pin; 5-Locking screw. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to specific embodiments and the accompanying drawings. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope and application of the present invention.

[0026] Non-limiting and non-exclusive embodiments will be described with reference to the following figures, wherein the same reference numerals denote the same parts unless otherwise specifically stated.

[0027] A large-block inspection auxiliary tooling, such as Figure 1 and 2As shown, the fixture includes: a support body 1, serving as the support structure for the entire tooling and a sliding guide rail; two sliding frames 2, slidably mounted on the support body 1, the sliding frames 2 being "H"-shaped, including a horizontal plate 21, a left vertical plate 22, and a right vertical plate 23, the horizontal plate 21 being positioned between the left vertical plate 22 and the right vertical plate 23 and spanning across the support body 1, allowing the sliding frames 2 to slide along the length of the support body 1; a first through hole 231 being provided laterally through the left vertical beam 22 and the right vertical plate 23 at their middle and through their left and right end faces; and a locking screw 5 being provided on the lower outer side of the left vertical plate 22 or the right vertical beam 23, the locking screw 5 being able to approach or move away from the support body 1, and during measurement, the locking screw 5 being able to abut against the support body 1, locking the relative position of the sliding frames 2 by the locking screw 5, preventing them from sliding further, thus facilitating measurement. To facilitate measurement, the diameter of the locking screw 5 head can be set to three to five times the diameter of the locking screw 5 rod body, allowing personnel to easily turn the locking screw 5 by hand and adjust its distance from the support body 1. During measurement, the positions of the two sliding brackets 2 can be adjusted according to the length of different gauge blocks, corresponding to their leverage points. The locking screw 5 is used to fix the position of the sliding brackets 2, thereby minimizing the deformation of the gauge block due to gravity. This structure can meet the leverage point support requirements of gauge blocks of different specifications, adapting to different gauge blocks, making it more convenient to use and significantly improving work efficiency. The cylindrical rod 3 is positioned between the left vertical plate 22 and the right vertical plate 23, with both ends interference-fitted with the first through hole 231. During measurement, the side of the cylindrical rod 3 contacts the leverage point of the gauge block. It can be understood that during specific measurement, the two sliding brackets 2 are spaced apart, so that the two cylindrical rods 3 contact the leverage points at both ends of the gauge block respectively, minimizing the deformation of the gauge block and controlling the final measurement result within a minimal range. The cylindrical rod 3 is used to make contact with the gauge block at the point of contact. Due to the shape characteristics of the cylindrical rod 3, compared with planar contact, the contact area of ​​the cylindrical rod 3 and the gauge block at the point of contact is small. A relatively stable contact point can be formed in a smaller contact area, making it easier to determine the contact position. Especially when inspecting a large number of gauge blocks, the contact point (the position of the contact between the cylindrical rod 3 and the gauge block at the point of contact) can be quickly determined, which is beneficial to improving the accuracy of measurement and can reduce the measurement error caused by unstable contact to a certain extent. In addition, the cylindrical rod 3 is interference-fitted with the first through hole 231 on the left vertical plate 22 and the right vertical plate 23. With the locking screw 5 fixing the position of the sliding bracket 2, the position of the cylindrical rod 3 is further fixed. This fixture is convenient for installing gauge blocks and is easy to operate. It can effectively prevent the cylindrical rod 3 from moving during installation and affecting the measurement structure.

[0028] In some examples of this embodiment, a clamping mechanism 4 is also included, which is disposed above the cylindrical bar 3 and is used to apply pressure to the gauge block from top to bottom to clamp the gauge block. Specifically, the clamping mechanism 4 includes a mounting plate 41 and several clamping screws 42. The upper ends of the left vertical plate 22 and the right vertical plate 23 are respectively located at both ends of the mounting plate 41. The right end of the mounting plate 41 is hinged to the upper end of the right vertical plate 23, so that the mounting plate 41 can rotate 180° left and right in the vertical direction. In actual use, the mounting plate 41 is flipped outward so that the gauge block can be placed on the cylindrical rod 3. In some other examples, as long as the left end of the mounting plate 41 can be rotated to be directly above its right end, it will not affect the placement of the gauge block on the cylindrical rod 3. Several clamping screws 42 are arranged side by side on the mounting plate 41 and can move up and down so that their lower ends can contact the gauge block to achieve the effect of clamping the gauge block. Here, the clamping screws 42 mainly use their own weight to apply pressure to the gauge block to achieve the clamping effect. Therefore, when there is enough space, clamping screws 42 with a certain weight should be used as much as possible. Specifically, during gauge block measurement, a comparison is made between a standard gauge block and the measured block. This example uses two clamping screws 42, which clamp the standard gauge block and the measured block respectively. In other examples, a different number of clamping screws 42 can be used, such as three. One clamping screw 42 clamps the standard gauge block, and the other two clamp the two measured blocks respectively. The lengths of two gauge blocks can be measured at once, outputting two sets of data. The number of clamping screws 42 is not limited here and can be determined according to specific measurement needs. Specifically, the clamping screws 42 are threaded to the mounting plate 41. Their up-and-down movement can be adjusted by twisting the clamping screws 42 to adjust the clamping force on the gauge block. A handheld part 421 can also be provided at its head. The handheld part 421 includes one of a ring, a handle, and a frosted head. This structure provides a better grip and friction, allowing for operation by hand without tools during measurement, facilitating the adjustment of the clamping screws 41's up-and-down movement by the tester. In order to increase the contact area between the clamping screw 41 and the gauge block, the lower end of the clamping screw 42 can be set in an inclined shape, so that the cross-sectional area of ​​its bottom is larger than the cross-sectional area of ​​its middle part.

[0029] In some other examples of this embodiment, the clamping mechanism 4 further includes a locking pin 43 and a capped pin 44 disposed on the upper end of the left vertical plate 22; a groove 221 is provided on the left side wall of the upper part of the left vertical plate 22; one end of the locking pin 43 is provided with a second through hole (not shown in the figure); the capped pin 44 passes through the second through hole and is in clearance fit with the locking pin 43; the locking pin 43 can rotate horizontally around the capped pin 44, so that the other end of the locking pin 43 can be engaged in the groove 221, so as to press the left end of the mounting plate 41 from top to bottom, avoiding the left end of the mounting plate 41 from being lifted, resulting in poor clamping effect of the clamping screw 42, and ultimately affecting the measurement accuracy of the tooling.

[0030] In other examples of this embodiment, a protrusion 222 that cooperates with the support body is provided on the lower inner side of the left vertical plate 22 or the right vertical plate 23, giving the sliding frame 2 a pre-position with the support body 1, facilitating the sliding of the sliding frame. It should be explained that when a locking screw 5 is provided on the left vertical plate 22, a protrusion 222 is provided on the lower inner side of the right vertical plate 23; conversely, when a locking screw 5 is provided on the right vertical plate 23, a protrusion 222 is provided on the lower inner side of the left vertical plate 22. The combined action of the protrusion 222 and the locking screw 5 facilitates locking the sliding frame 2 and can, to a certain extent, prevent the sliding frame 2 from detaching from the support body 1.

[0031] The working principle of the above-mentioned auxiliary fixture for mass block calibration is as follows: Before measurement, open the locking pin 43, flip the mounting plate 41 outward, place the cleaned mass block on the cylindrical rod 3 from above, slide the sliding bracket 2 according to the length of the mass block so that the cylindrical rod 3 is aligned with the Elliott mark on the mass block, tighten the locking screw 5, flip the mounting plate 41 inward so that the clamping screw 42 is aligned with the standard mass block and the mass block to be measured respectively, rotate the locking pin 43 so that it is engaged in the groove 221, tighten the clamping screw 42 so that it presses the standard mass block and the mass block to be measured, and finally fix the entire fixture onto the length measuring instrument, and the measurement can begin.

[0032] Those skilled in the art will recognize that numerous variations are possible with respect to the above description, and the embodiments and figures are merely for describing one or more specific implementations.

[0033] Although exemplary embodiments of the present invention have been described and illustrated, those skilled in the art will understand that various changes and substitutions can be made thereto without departing from the spirit of the present invention. Furthermore, many modifications can be made to adapt specific situations to the doctrine of the present invention without departing from the central concept of the present invention described herein. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but may include all embodiments and equivalents that fall within the scope of the present invention.

Claims

1. A mass production block inspection auxiliary tooling, characterized in that, include: The main support structure serves as the supporting structure for the entire tooling and as the sliding guide rail; Two sliding brackets are slidably mounted on the support body. The sliding brackets are "H"-shaped and include a horizontal plate, a left vertical plate, and a right vertical plate. The horizontal plate is positioned between the left and right vertical plates and spans across the support body, allowing the sliding brackets to slide along the length of the support body. A first through hole is provided laterally through the left and right end faces of the left and right vertical beams. A locking screw is provided on the lower outer side of the left or right vertical plate, and the locking screw can be close to or away from the support body. A cylindrical rod is disposed between the left and right vertical plates, and both ends are interference-fitted with the first through hole.

2. The auxiliary tooling for mass block inspection according to claim 1, characterized in that: It also includes a clamping mechanism, which is disposed above the cylindrical bar, for applying pressure to the gauge block from top to bottom to clamp the gauge block.

3. The auxiliary tooling for mass block inspection according to claim 2, characterized in that: The clamping mechanism includes a mounting plate and several clamping screws. The upper ends of the left vertical plate and the right vertical plate are respectively located at both ends of the mounting plate. The right end of the mounting plate is hinged to the upper end of the right vertical plate, so that the mounting plate can rotate 180° left and right in the vertical direction. Several clamping screws are arranged side by side on the mounting plate and can move up and down so that their lower ends can contact the gauge block to achieve the effect of clamping the gauge block.

4. The auxiliary tooling for mass block inspection according to claim 3, characterized in that: The clamping screw is threaded to the mounting plate.

5. The auxiliary tooling for mass block inspection according to claim 4, characterized in that: The clamping screw head is provided with a handle, which includes one of a ring, a handle, and a grinding head.

6. The auxiliary tooling for mass block inspection according to claim 3, characterized in that: The lower end of the clamping screw is inclined, so that the cross-sectional area at the bottom is larger than the cross-sectional area at the middle.

7. The auxiliary tooling for mass block inspection according to claim 3, characterized in that: The clamping mechanism further includes a locking pin and a capped pin disposed on the upper part of the left vertical plate; a groove is provided on the left side wall of the upper part of the left vertical plate; a second through hole is provided on one end of the locking pin; the capped pin passes through the second through hole and is in clearance fit with the locking pin; the locking pin can rotate horizontally around the capped pin, so that the other end of the locking pin can be engaged in the groove.

8. The auxiliary tooling for mass block inspection according to claim 1, characterized in that: A protrusion that cooperates with the supporting body is provided on the lower inner side of the left or right vertical plate.

Images