Double-reading caliper for measuring size of high-temperature part
By designing a sliding fit between the fixed and movable scale assembly, combined with a ceramic anvil and digital display, the problems of heat conduction and radiation damage in high-temperature measurements were solved, enabling efficient and accurate measurement of high-temperature parts and improving operational safety and measurement accuracy.
Patent Information
- Application Number
- CN202423236272.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Existing technologies for measuring high-temperature and red-hot metal parts suffer from problems such as rapid heat conduction, radiation damage to operators, large measurement errors, and easy equipment damage, making it difficult to achieve efficient and accurate measurements.
The fixed and movable scales are designed with a sliding fit, combined with a ceramic anvil, heat-reflective film, and digital display, to create a dual-reading caliper. This reduces heat conduction and radiation, and improves operational safety and measurement accuracy.
It enables rapid and accurate measurement in high-temperature environments, reduces operator injury, improves measurement efficiency and caliper lifespan, and reduces operational difficulty and errors.
Smart Images
Figure CN223564873U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of measuring tools, specifically to a caliper for measuring the size of high-temperature parts. BACKGROUND
[0002] In the industry related to hot working such as rolling, forging and heat treatment, there are often occasions of measuring the size of high-temperature, red-hot metal parts. At present, most people use ordinary calipers to measure, and the calipers generally include three types: vernier, needle and electronic digital display. When measuring high-temperature, red-hot metal parts, the traditional ordinary caliper measurement usually has certain drawbacks:
[0003] 1. When the temperature of the measured part is high, even as high as 650-750℃ in red-hot state, there is a lot of heat. The metal claws of the three types of calipers directly contact the high-temperature measured part, and the heat is quickly conducted to the metal ruler body. Since the operator needs some time to adjust the position of the caliper / workpiece and read the reading, and the distance between the hand, eye, head and body of the operator and the high-temperature workpiece is relatively close during the measurement process, it is difficult to continuously measure for a long time even in the state of wearing heat protective clothing. When multiple workpieces and multiple measurement points are repeatedly measured, the operation is particularly difficult. The difficulty of operation can lead to measurement error and reading error, and the operator is required to have high physical strength and skill, and is easily harmed by high-temperature radiation.
[0004] 2. The digital caliper has precise electronic components and sensors, which are often used close to high-temperature workpieces, and are prone to failure, aging and failure, affecting the measurement. SUMMARY
[0005] The utility model solves the technical problem of providing a double-reading caliper for measuring the size of high-temperature parts, which can avoid the rapid conduction and radiation of workpiece heat to the metal ruler body, reduce the working time of the operator under high-temperature radiation, and improve the working efficiency, measurement accuracy and harm reduction of high-temperature operation.
[0006] The utility model is implemented as follows:
[0007] It comprises a fixed ruler and a movable ruler assembly in sliding cooperation;
[0008] The left clamping jaw downwardly extends from the bottom of the left end of the fixed ruler, and a left recessed groove in a right-angled trapezoidal shape is formed in the front side of the lower part of the left clamping jaw and recessed into the interior of the left clamping jaw, and a left ceramic anvil is placed in the left recessed groove, and a left fixing cover is arranged on the outer surface of the left ceramic anvil, and the left fixing cover is connected to the left clamping jaw through a screw after pressing the left ceramic anvil, and the left end and the right end of the left ceramic anvil are exposed from the left end and the right end of the left fixing cover; the left part of the front side of the fixed ruler is provided with two rows of scales, which are respectively the English scale and the metric scale, the rear side of the fixed ruler is provided with an axial long recessed groove, a heat reflecting film is pasted in the long recessed groove of the rear side of the fixed ruler, and the right part of the front side of the fixed ruler is provided with a long recessed groove, and a metal grating or a glass grating is pasted in the long recessed groove; that is, the metal grating or the glass grating is located on the right side of the scale, and the upper edge and the lower edge of the fixed ruler are provided with axial convex edges.
[0009] The moving ruler group comprises a scale moving ruler, a connecting plate and a digital display moving ruler.
[0010] The scale moving ruler is connected to the left end of the connecting plate through a screw, the right clamping jaw downwardly extends from the bottom of the left end of the scale moving ruler, a right recessed groove in a right-angled trapezoidal shape is formed in the front side of the lower part of the right clamping jaw and recessed into the interior of the right clamping jaw, a right ceramic anvil is placed in the right recessed groove, a right fixing cover is arranged on the outer surface of the right ceramic anvil, the right fixing cover is connected to the right clamping jaw through a screw after pressing the right ceramic anvil, and the left end and the right end of the right ceramic anvil are exposed from the left end and the right end of the fixing cover; the upper end and the lower end of the front side of the scale moving ruler are respectively provided with axial sliding grooves, and the axial convex edges of the upper edge and the lower edge of the fixed ruler are respectively arranged in the sliding grooves of the upper end and the lower end of the scale moving ruler, so that the scale moving ruler can slide on the fixed ruler; the scale of the scale moving ruler is located on the front side of the sliding grooves of the upper end and the lower end of the scale moving ruler, and the upper scale and the lower scale of the scale moving ruler are respectively the differential vernier scales of the English scale and the metric scale.
[0011] The digital display moving ruler comprises a digital display moving ruler seat and a digital display panel, the digital display moving ruler seat is connected to the right end of the connecting plate through a screw, the digital display panel is fixed on the digital display moving ruler seat, the digital display moving ruler seat is provided with a sliding groove for the fixed ruler to pass through, and the right end of the fixed ruler is exposed from the sliding groove of the digital display moving ruler seat after the moving ruler group and the fixed ruler are connected. The moving ruler group as a whole can slide on the fixed ruler.
[0012] The handle is further connected to the left end of the fixed ruler through a screw. The handle can increase the distance between the hand and the high-temperature workpiece and improve the stability of the pose operation.
[0013] The heat reflecting film can be further pasted on the rear side of the connecting plate of the moving ruler group to reflect and scatter the heat radiated by the high-temperature workpiece and reduce the heating of the ruler body of the caliper.
[0014] The digital display moving ruler is arranged on the right part of the caliper far from the anvil, the right hand holds the digital display moving ruler and the left hand holds the handle during the measurement, and the moving ruler group is pushed and pulled, so that the hand and the electronic elements in the digital display moving ruler can be far away from the high-temperature workpiece.
[0015] The two ceramic measuring anvils are right-angled trapezoids in shape, which are adapted to the groove shape of the left and right claws, and the outer side of the ceramic measuring anvils is a circular arc surface, and the opposite side of the ceramic measuring anvils is a plane, and the material of the ceramic measuring anvils is a high-temperature-resistant and low-thermal-conductivity material, and is usually a high-hardness, high-wear-resistance and low-thermal-conductivity material such as zirconium oxide.
[0016] When measuring the thickness of a solid part, the inner side of the two ceramic measuring anvils (i.e. the opposite side of the two ceramic measuring anvils) is used; when measuring a hole or groove, the outer side of the two ceramic measuring anvils is used.
[0017] The top of the scale moving ruler is provided with a first fastening screw, the inner end of the first fastening screw extends into the sliding groove at the upper end of the scale moving ruler and presses against the upper edge of the fixed ruler, and the fastening of the scale moving ruler and the fixed ruler can be realized by tightening the first fastening screw, so that the sliding of the moving ruler group during reading is prevented.
[0018] The top of the digital display moving ruler is provided with a second fastening screw, the inner end of the second fastening screw extends into the digital display moving ruler seat and presses against the upper edge of the fixed ruler, and the fastening of the digital display moving ruler and the fixed ruler can be realized by tightening the second fastening screw, so that the sliding of the moving ruler group during reading is prevented.
[0019] When installed, the upper and lower edges of the ceramic measuring anvil and the upper and lower edges of the right-angled trapezoidal groove form an inclined surface for self-locking, and the measuring anvil is pressed in the groove by the fixing cover, so that the measuring anvil is reliably positioned and fixed and is not easy to shift and loosen, and the measuring anvil is convenient to replace.
[0020] The advantages of the utility model are:
[0021] 1. The digital display directly reads speedily, the reading time is reduced, the operation time under high temperature is reduced, meanwhile, the part for holding the caliper is relatively far away from the high-temperature workpiece, compared with the close distance of the vernier reading, during the digital display reading, the eyes and the workpiece can keep a far distance, the heat radiation harm of the eyes, the hands and the head which are sensitive to the human body of the operator is reduced, the safe production is ensured, and the utility model is especially suitable for the accurate measurement of the high-temperature workpiece.
[0022] 2. The digital display reading is fast and improves the operation efficiency.
[0023] 3. The digital display reading is adopted, the reading error is eliminated, the measurement precision is improved, and the product quality can be improved.
[0024] 4. The caliper is greatly reduced in high-temperature heating, the service life of the caliper is improved, and the precision stability is improved.
[0025] 5. The operation is convenient, the auxiliary handle is adopted, the operation difficulty of ensuring the abutting position and the force of the measuring anvil and the workpiece in the measurement process is reduced, the measurement time is reduced, and the measurement precision is improved.
[0026] 6, the caliper is easy to maintain, the easy-to-wear parts are easy to purchase, and the maintenance cost is low.
[0027] 7, the caliper is easy to manufacture, and mature technologies and mature elements are adopted. BRIEF DESCRIPTION OF DRAWINGS
[0028] Figure 1 is the front view structural schematic diagram of the utility model;
[0029] Figure 2 is the rear view structural schematic diagram of the utility model;
[0030] Figure 3 is the structural schematic diagram of the fixed ruler in the utility model;
[0031] Figure 4 is the front view structural schematic diagram of the fixed ruler when the ceramic measuring anvil is not installed in the utility model;
[0032] Figure 5 is the structural schematic diagram of the movable ruler set in the utility model;
[0033] Figure 6 is the structural schematic diagram of the scale movable ruler in the utility model;
[0034] Figure 7 is the structural schematic diagram of the scale movable ruler when the ceramic measuring anvil and the scale are not installed in the utility model;
[0035] Figure 8 is the structural schematic diagram of the digital display movable ruler in the utility model;
[0036] Figure 9 is the front view structural schematic diagram of the ceramic measuring anvil in the utility model;
[0037] Figure 10 is the three-dimensional structural schematic diagram of the ceramic measuring anvil in the utility model. DETAILED DESCRIPTION
[0038] The utility model will be further explained in combination with Figures 1-10 The utility model;
[0039] It includes the fixed ruler 1 and the movable ruler set 2 of sliding cooperation;
[0040] The left clamping jaw 1-1 downwardly extends from the bottom of the left end of the fixed ruler 1, and a left recess 1-2 in the shape of a right-angled trapezoid is formed in the front side of the lower part of the left clamping jaw, and a left ceramic anvil 1-3 is placed in the left recess, and a left fixing cover 1-4 is arranged on the outer surface of the left ceramic anvil, and the left fixing cover is connected to the left clamping jaw through a screw after pressing the left ceramic anvil, and the left end and the right end of the left ceramic anvil are exposed from the left end and the right end of the left fixing cover; the left part of the front side of the fixed ruler is provided with two rows of scales 1-5, which are respectively in the British system and the metric system, and the rear side of the fixed ruler is provided with a long recess in the axial direction, and a heat reflecting film 3 is pasted in the long recess of the rear side of the fixed ruler, and the right part of the front side of the fixed ruler is provided with a long recess, and a metal grating or a glass grating 1-6 is pasted in the long recess; that is, the metal grating or the glass grating is located on the right side of the scale, and the upper edge and the lower edge of the fixed ruler are provided with protrusions 1-7 in the axial direction.
[0041] The movable ruler set 2 comprises a scale movable ruler 2-1, a connecting plate 2-2 and a digital display movable ruler 2-3.
[0042] The scale movable ruler 1-1 is connected to the left end of the connecting plate 2-2 through a screw, and a right clamping jaw 2-1-1 downwardly extends from the bottom of the left end of the scale movable ruler, and a right recess 2-1-2 in the shape of a right-angled trapezoid is formed in the front side of the lower part of the right clamping jaw, and a right ceramic anvil 2-1-3 is placed in the right recess, and a right fixing cover 2-1-4 is arranged on the outer surface of the right ceramic anvil, and the right fixing cover is connected to the right clamping jaw through a screw after pressing the right ceramic anvil, and the left end and the right end of the right ceramic anvil are exposed from the left end and the right end of the right fixing cover; the upper end and the lower end of the front side of the scale movable ruler are respectively provided with sliding grooves 2-1-5 in the axial direction, and the protrusions in the axial direction of the upper edge and the lower edge of the fixed ruler are respectively arranged in the sliding grooves of the upper end and the lower end of the scale movable ruler, so that the scale movable ruler can slide on the fixed ruler; the scale of the scale movable ruler is located on the front side of the sliding grooves of the upper end and the lower end of the scale movable ruler, and the upper scale and the lower scale of the scale movable ruler are respectively differential vernier scales 2-1-6 in the British system and the metric system.
[0043] The digital display movable ruler 2-3 comprises a digital display movable ruler seat 2-3-1 and a digital display panel 2-3-2, the digital display movable ruler seat is connected to the right end of the connecting plate 2-2 through a screw, and the digital display panel is fixed on the digital display movable ruler seat, and the digital display movable ruler seat is provided with a sliding groove for the fixed ruler to pass through, and after the movable ruler set and the fixed ruler are connected, the right end of the fixed ruler extends from the sliding groove of the digital display movable ruler seat. The whole movable ruler set can slide on the fixed ruler.
[0044] The handle 4 is further connected to the left end of the fixed ruler through a screw. The handle can increase the distance between the hand and the high-temperature workpiece, and improve the stability of the pose operation.
[0045] A heat reflecting film can be further pasted on the rear side of the connecting plate of the movable ruler set, so as to reflect and scatter the heat radiated by the high-temperature workpiece, and reduce the heating of the ruler body of the caliper.
[0046] Digital display ruler is arranged at right part of caliper far from measuring anvil, during measuring process, right hand holds digital display ruler, left hand holds handle, push and pull ruler group, so that hand and electronic element in digital display ruler are far away from high temperature workpiece.
[0047] The two ceramic measuring anvils are right-angled trapezoids in shape, which are adapted to the groove shape of the left and right claws, and the outer side of the ceramic measuring anvils is a circular arc surface, and the opposite side of the two ceramic measuring anvils is a plane, and the ceramic measuring anvils are made of high-temperature-resistant and low-thermal-conductivity materials, such as high-hardness, high-wear-resistance and low-thermal-conductivity zirconium oxide.
[0048] When measuring the thickness of a solid part, the inner side of the two ceramic measuring anvils (i.e. the opposite side of the two ceramic measuring anvils) is used; when measuring a hole or a groove, the outer side of the two ceramic measuring anvils is used.
[0049] The top of the scale ruler is provided with a first fastening screw 2-1-7, the inner end of the first fastening screw extends into the sliding groove at the upper end of the scale ruler and presses against the upper edge of the scale ruler, and by tightening the first fastening screw, the scale ruler and the scale can be fastened, so that the ruler group does not slide when reading.
[0050] The top of the digital display ruler is provided with a second fastening screw 2-3-3, the inner end of the second fastening screw extends into the digital display ruler seat and presses against the upper edge of the scale ruler, and by tightening the second fastening screw, the digital display ruler and the scale can be fastened, so that the ruler group does not slide when reading.
[0051] When installed, the upper and lower edges of the ceramic measuring anvils and the upper and lower edges of the right-angled trapezoidal groove form a bevel self-locking, and then the measuring anvils are pressed tightly in the groove by the fixing cover, so that the measuring anvils are reliably positioned and fixed and are not easy to shift and loosen, and the measuring anvils are convenient to replace.
[0052] The caliper must be used after periodical verification, and the verification method is similar to that of ordinary calipers.
[0053] Before use, the caliper is calibrated, and the calibration method is similar to that of ordinary calipers, the left and right measuring anvils are pressed against each other, the related scale lines are checked to see whether they are zeroed and aligned, and the digital display panel is zeroed.
[0054] The use method is similar to that of ordinary calipers, when measuring solid size, the ruler group is moved, so that the two measuring anvils are pressed against the workpiece, and then the scale line or the digital display is read.
[0055] Reading method 1: the scale line can be read.
[0056] Reading method 2: the digital display can be read.
[0057] The device realizes the double-reading function of the caliper, and the corresponding method can be selected according to the specific occasion. When measuring high-temperature workpieces, the digital direct-reading method has obvious advantages.
[0058] The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation made by using the content of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.
Claims
1. A dual read caliper for high temperature part dimension measurement characterized by: The fixed ruler (1) and the movable ruler group (2) are in sliding fit; The left end of the fixed ruler (1) is fixed with a downward extending left clamping jaw (1-1), the lower front side of the left clamping jaw is provided with a left recess (1-2) which is a right-angled trapezoid and is recessed into the inside of the left clamping jaw, a left ceramic measuring anvil (1-3) is placed in the left recess, the outside of the left ceramic measuring anvil is provided with a left fixing cover (1-4), the left fixing cover is connected to the left clamping jaw through a screw after pressing the left ceramic measuring anvil, the left end and the right end of the left ceramic measuring anvil are exposed from the left end and the right end of the left fixing cover; the left part of the front side of the fixed ruler is provided with two rows of scales (1-5) which are upper and lower, respectively, and are British / metric scales, the right part of the front side of the fixed ruler is provided with a long recess, and a metal grating or a glass grating (1-6) is pasted in the long recess; the metal grating or the glass grating is located on the right side of the scale, and the upper edge and the lower edge of the fixed ruler are provided with axial convex edges (1-7); The movable ruler group (2) comprises a scale movable ruler (2-1), a connecting plate (2-2) and a digital display movable ruler (2-3). The scale movable ruler (2-1) is connected to the left end of the connecting plate (2-2) through a screw, the left end of the scale movable ruler is provided with a downward extending right clamping jaw (2-1-1), the lower front side of the right clamping jaw is provided with a right recess (2-1-2) which is a right-angled trapezoid and is recessed into the inside of the right clamping jaw, a right ceramic measuring anvil (2-1-3) is placed in the right recess, the outside of the right ceramic measuring anvil is provided with a right fixing cover (2-1-4), the right fixing cover is connected to the right clamping jaw through a screw after pressing the right ceramic measuring anvil, the left end and the right end of the right ceramic measuring anvil are exposed from the left end and the right end of the fixing cover; the upper end and the lower end of the front side of the scale movable ruler are respectively provided with axial sliding grooves (2-1-5), the axial convex edges of the upper edge and the lower edge of the fixed ruler are respectively placed in the sliding grooves of the upper end and the lower end of the scale movable ruler, the scale of the scale movable ruler is located on the front side of the sliding grooves of the upper end and the lower end of the scale movable ruler, and the upper / lower scale of the scale movable ruler is a differential vernier scale (2-1-6) of British / metric; The digital display movable ruler (2-3) comprises a digital display movable ruler seat (2-3-1) and a digital display panel (2-3-2), the digital display movable ruler seat is connected to the right end of the connecting plate (2-2) through a screw, the digital display panel is fixed on the digital display movable ruler seat, the digital display movable ruler seat is provided with a sliding groove for the fixed ruler to pass through, and the right end of the fixed ruler is exposed from the sliding groove of the digital display movable ruler seat after the movable ruler group and the fixed ruler are connected.
2. The dual read digital caliper for high temperature part dimension measurement according to claim 1, wherein: A handle (4) is further provided, and the right end of the handle is connected to the left end of the fixed ruler through a screw.
3. The dual read digital caliper for measuring the size of a high temperature part according to claim 1 or 2, wherein: The rear side of the fixed ruler is provided with an axial long recess, and a heat reflecting film (3) is pasted in the long recess of the rear side of the fixed ruler; the rear side of the connecting plate of the movable ruler group is also pasted with a heat reflecting film.
4. The dual read digital caliper for measuring the size of a high temperature part according to claim 1 or 2, wherein: The two ceramic measuring anvils are right-angled trapezoids which are adapted to the shapes of the recesses of the left and right clamping jaws, one side of the ceramic measuring anvils which faces outward is a circular arc surface, the opposite sides of the ceramic measuring anvils are planes, and the ceramic measuring anvils are made of high-temperature resistant and low-heat-conducting materials.
5. The dual read digital caliper for measuring the size of a high temperature part according to claim 1 or 2, wherein: The top of the scale movable ruler is provided with a first fastening screw (2-1-7), the inner end of the first fastening screw is inserted into the sliding groove of the upper end of the scale movable ruler and presses the upper edge of the fixed ruler.
6. The dual read digital caliper for measuring the size of a high temperature part according to claim 1 or 2, wherein: The top of the digital moving ruler is provided with a second fastening screw (2-3-3), the inner end of which extends into the digital moving ruler seat and presses against the upper edge of the fixed ruler.