CN111872842A - Vernier caliper grinding machine with upper limit of measurement range to 1000mm and use method thereof - Google Patents
Vernier caliper grinding machine with upper limit of measurement range to 1000mm and use method thereof Download PDFInfo
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- CN111872842A CN111872842A CN202010890738.5A CN202010890738A CN111872842A CN 111872842 A CN111872842 A CN 111872842A CN 202010890738 A CN202010890738 A CN 202010890738A CN 111872842 A CN111872842 A CN 111872842A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/04—Lapping machines or devices; Accessories designed for working plane surfaces
- B24B37/07—Lapping machines or devices; Accessories designed for working plane surfaces characterised by the movement of the work or lapping tool
- B24B37/10—Lapping machines or devices; Accessories designed for working plane surfaces characterised by the movement of the work or lapping tool for single side lapping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/27—Work carriers
- B24B37/30—Work carriers for single side lapping of plane surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/34—Accessories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/16—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces performing a reciprocating movement, e.g. during which the sense of rotation of the working-spindle is reversed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The invention provides a vernier caliper grinding machine with a measuring range of up to 1000mm and a use method thereof, wherein the grinding machine comprises: the driving mechanism is connected with the fixed platform and moves on the fixed platform in a reciprocating manner; the clamping mechanism is fixedly connected with the fixed platform and comprises a clamping base, a vernier caliper fastening screw and a clamping base fastening screw; the grinding mechanism is connected with the driving mechanism and comprises a grinding block clamping mechanism and a grinding block, the grinding block is embedded into the grinding block clamping mechanism, and the grinding surface of the grinding block is in contact with the measuring surface of the vernier caliper; the grinding block clamping mechanism and the grinding block are driven by the driving mechanism to do grinding reciprocating motion, and the grinding of the measuring surface of the vernier caliper is completed. The vernier caliper grinding machine has the advantages of simplified structure and convenience in processing, the grinding upper limit of the vernier caliper grinding machine can be enlarged to 1000mm, the maintenance grinding efficiency is improved, and the labor intensity of grinding personnel is reduced.
Description
Technical Field
The invention relates to the technical field of grinding equipment, in particular to a vernier caliper grinding machine with a measuring range from the upper limit to 1000mm and a using method thereof.
Background
In the use process of the vernier caliper, the measuring surface is easy to generate the phenomena of rust, scratch and edge collapse, the requirements of national calibration regulations are not met, and the vernier caliper can reach a qualified use state only through grinding and repairing of the measuring surface. The upper limit of the rough grinding range of the existing vernier caliper measuring surface grinding machine is 300mm, and the vernier caliper with the upper limit of the measuring range of 1000mm can only be maintained in a manual grinding mode, so that the maintenance and grinding efficiency is low and the labor intensity is high.
Therefore, it is urgently needed to develop a vernier caliper grinding machine with a measurement range of up to 1000mm, so as to improve the maintenance grinding efficiency and reduce the labor intensity of grinding personnel.
Disclosure of Invention
According to the technical problems that the upper limit of the rough grinding range of the existing vernier caliper measuring surface grinding machine is 300mm, the vernier caliper with the upper limit of the measuring range of 1000mm can only be maintained in a manual grinding mode, the maintenance and grinding efficiency is low, and the labor intensity is high, the vernier caliper grinding machine with the upper limit of the measuring range of 1000mm and the using method thereof are provided. The invention mainly utilizes the grinding block clamping mechanism and the grinding block to expand the grinding upper limit of the vernier caliper grinding machine to 1000mm, thereby improving the maintenance grinding efficiency and reducing the labor intensity of grinding personnel.
The technical means adopted by the invention are as follows:
a vernier caliper grinding machine with a measurement range up to 1000mm comprising:
the driving mechanism is connected with a screw rod, the screw rod is connected with a motor, the screw rod is driven by the motor, and the driving mechanism is further driven to reciprocate on the fixed platform in the horizontal direction;
the clamping mechanism is fixedly connected with the fixed platform and comprises a clamping base for mounting and fixing the vernier caliper, at least three fastening screws for the vernier caliper and at least two fastening screws for fixing the clamping base; the clamping base is provided with a U-shaped groove in the middle, at least three threaded holes are formed in the side wall of one side of the clamping base, the threaded holes are connected with the vernier caliper fastening screws in a matched mode, the vernier caliper is arranged in the U-shaped groove and is fixed on the side wall of the clamping base through the vernier caliper fastening screws; the bottom of the U-shaped groove is at least provided with two mounting holes, the mounting holes are matched and connected with the clamping base fastening screws, and the clamping base is fixed on the fixed platform through the clamping base fastening screws;
the grinding mechanism is connected with the driving mechanism and comprises a grinding block clamping mechanism and a grinding block, one side of the grinding block clamping mechanism is fixed on the driving mechanism, a through groove is formed in the other side of the grinding block clamping mechanism, the grinding block is embedded in the through groove, and grinding surfaces of the grinding block are distributed on the upper surface and the lower surface and are respectively contacted with measuring surfaces of two measuring claws on the vernier caliper; the driving mechanism drives the grinding block clamping mechanism and the grinding block to do grinding reciprocating motion, and grinding of the measuring surface of the vernier caliper is completed.
Further, the clamping base, the grinding block clamping mechanism, the grinding block, the vernier caliper fastening screw and the clamping base fastening screw are all made of 45# steel.
Further, the length of centre gripping base is 150mm, and the height is 30mm, slide caliper fastening screw's external diameter is M5, centre gripping base fastening screw's external diameter is M6.
Further, the grinding block is a regular cuboid of 20mm × 20mm × 65 mm.
Further, the upper surface and the lower surface of the grinding block are both coated with grinding agents, and the upper surface is parallel to the lower surface.
The invention also provides a use method of the vernier caliper grinding machine with the upper limit of the measurement range of 1000mm, which comprises the following steps:
s1, firstly, adjusting the interaction items of the parts of the vernier caliper with the upper limit of the measurement range to be ground to 1000mm to be qualified according to the requirements of JJJG 30-2012 Universal Caliper verification regulations on the interaction of the parts of the vernier caliper;
s2, clamping the vernier caliper in a clamping base, fixing the vernier caliper by a fastening screw of the vernier caliper, clamping a fixed measuring jaw of the vernier caliper during clamping, enabling the tail of a main scale of the vernier caliper to be above, enabling a measuring surface of the vernier caliper to be in a horizontal state, and clamping the clamping base at the middle part of the fixed measuring jaw of the vernier caliper;
s3, fully considering the effective stroke of the grinding block clamping mechanism during reciprocating feeding grinding; ensuring that the grinding block is always contacted with the whole measuring surface of the vernier caliper during grinding;
s4, coating the two parallel grinding surfaces on the grinding block with the grinding agent, combining the measuring jaws of the vernier caliper to enable the measuring surfaces of the measuring jaws to be in contact with the two grinding surfaces of the grinding block coated with the grinding agent, and applying force to enable the two measuring jaws of the vernier caliper to clamp the upper and lower grinding surfaces of the grinding block;
s5, starting a driving mechanism, driving a grinding block clamping mechanism by the driving mechanism, and driving a grinding block to do reciprocating feeding motion by the grinding block clamping mechanism to finish grinding and repairing the measuring surface of the vernier caliper; filling grinding agent at irregular time in the grinding process;
and S6, observing the grinding degree of rust and abrasion of the measuring surface of the vernier caliper by eye force until the grinding degree meets the grinding requirement, and judging the deformed grinding by a 1-level knife edge square.
Further, the grinding of the measuring surface of the vernier caliper is divided into coarse grinding and fine grinding, and during the coarse grinding, the grinding agent is prepared by mixing W20 diamond grinding paste and kerosene according to a ratio of 8: 2; when in fine grinding, the grinding agent is prepared by mixing W7 diamond grinding paste and kerosene according to the proportion of 8: 2.
Further, the flatness of the grinding surface of the grinding block is not more than 0.01mm, and the parallelism is not more than 0.01 mm.
Further, in step S6, the method for determining the deformed grinding by the level 1 knife edge square is as follows:
if the measuring surfaces of the two measuring claws of the vernier caliper are not perpendicular to the ruler body and a visual eye gap exists, the included angle between the measuring surfaces of the two measuring claws of the vernier caliper and the ruler body is judged to be more than 90 degrees, and the force is applied to the inner end of the measuring claw, close to the main ruler, of the measuring surface of the vernier caliper during grinding; when the included angle between the measuring surfaces of the two measuring claws of the vernier caliper and the ruler body is judged to be less than 90 degrees, the outer ends of the measuring claws of the measuring surfaces of the vernier caliper far away from the main ruler are stressed during grinding; until the requirement of fine grinding is met;
if the measuring surfaces of the two measuring jaws of the vernier caliper are not perpendicular to the side surfaces of the measuring jaws, when the knife edge square is clamped on the side surfaces of the measuring jaws and the measuring surfaces of the measuring jaws, visible light gaps exist, the contact point of the measuring surfaces of the measuring jaws and the knife edge square is a high point, stress is applied to the high point during grinding, and the requirement of fine grinding is met until the visible light gaps disappear.
Compared with the prior art, the invention has the following advantages:
1. the vernier caliper grinding machine with the upper limit of the measuring range of 1000mm and the use method thereof expand the grinding upper limit of the vernier caliper grinding machine to 1000mm, can improve the maintenance grinding efficiency and reduce the labor intensity of grinding personnel.
2. The vernier caliper grinding machine with the upper limit of the measuring range of 1000mm and the use method thereof have the advantages of simplified structure and convenient processing, can control the time within 10 minutes, improves the grinding precision, and can continuously adjust the grinding speed within 120 times/minute.
3. According to the vernier caliper grinding machine with the upper limit of the measurement range of 1000mm and the use method thereof, the grinding block is a 20mm multiplied by 65mm rectangular solid, and the grinding length is effectively prolonged by the design. The design of the grinding block clamping mechanism is very suitable for mounting a grinding block, and the grinding block is driven by the grinding block clamping mechanism connected to the driving mechanism to finish grinding the vernier caliper with the upper limit of the measuring range of 1000 mm.
In conclusion, the technical scheme of the invention can solve the problems that the upper limit of the rough grinding range of the existing vernier caliper measuring surface grinding machine is 300mm, the vernier caliper with the upper limit of the measuring range of 1000mm can only be maintained in a manual grinding mode, the maintenance grinding efficiency is low, and the labor intensity is high.
For the reasons, the invention can be widely popularized in the fields of grinding equipment and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the vernier caliper grinding machine of the present invention with a measurement range of up to 1000 mm.
FIG. 2 is a schematic diagram of the operation of the vernier caliper grinding machine of the present invention with a measurement range up to 1000 mm.
Fig. 3 is a schematic structural view of the clamping base of the present invention.
Fig. 4 is a left side view of fig. 3.
Fig. 5 is a top view of fig. 3.
FIG. 6 is a schematic view of the grinding block holding mechanism of the present invention.
Fig. 7 is a front view of fig. 6.
FIG. 8 is a schematic view of the structure of the polishing pad of the present invention.
Fig. 9 is a left side view of fig. 8.
FIG. 10 is a schematic view of the fastening screw of the vernier caliper and the fastening screw of the clamping base according to the present invention.
Fig. 11 is a right side view of fig. 10.
In the figure: 1. a drive mechanism; 2. clamping the base; 3. a grinding block clamping mechanism; 4. grinding blocks; 5. a vernier caliper fastening screw I; 6. fastening a screw II by using a vernier caliper; 7. a vernier caliper fastening screw III; 8. clamping a base fastening screw I; 9. and clamping a base fastening screw II.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
As shown, the present invention provides a vernier caliper grinding machine with a measurement range up to 1000mm, comprising:
the driving mechanism 1 is connected with a fixed platform, the driving mechanism 1 is connected with a screw rod, the screw rod is connected with a motor, the screw rod is driven by the motor, and the driving mechanism 1 is further driven to reciprocate on the fixed platform in the horizontal direction;
the clamping mechanism is fixedly connected with the fixed platform and comprises a clamping base 2 for installing and fixing the vernier caliper, at least three fastening screws for the vernier caliper and at least two fastening screws for the clamping base 2 for fixing the clamping base 2; the middle part of the clamping base 2 is provided with a U-shaped groove, the side wall of one side of the clamping base is provided with at least three threaded holes, the threaded holes are matched and connected with the vernier caliper fastening screws, and the vernier caliper is arranged in the U-shaped groove and fixed on the side wall of the clamping base 2 through the vernier caliper fastening screws; the bottom of the U-shaped groove is at least provided with two mounting holes, the mounting holes are matched and connected with the fastening screws of the clamping base 2, and the clamping base 2 is fixed on a fixed platform through the fastening screws of the clamping base 2;
the grinding mechanism is connected with the driving mechanism 1 and comprises a grinding block clamping mechanism 3 and a grinding block 4, one side of the grinding block clamping mechanism 3 is fixed on the driving mechanism 1, a through groove is formed in the other side of the grinding block clamping mechanism 3, the grinding block 4 is embedded in the through groove, and the grinding surfaces of the grinding block 4 are distributed on the upper surface and the lower surface and are respectively contacted with the measuring surfaces of two measuring claws on the vernier caliper; the driving mechanism 1 drives the grinding block clamping mechanism 3 and the grinding block 4 to do grinding reciprocating motion, and grinding of the measuring surface of the vernier caliper is completed.
Example 1
1-11, a vernier caliper grinder with a measurement range up to 1000mm consists of three parts: the grinding mechanism is fixed on the driving mechanism 1, the driving mechanism 1 is connected with the fixed platform, and the clamping mechanism is fixed on the fixed platform.
The first part is a driving mechanism 1, and as shown in fig. 1, the driving mechanism 1 has a reciprocating function, i.e., a horizontally reciprocating feeding mechanism, and the driving mechanism 1 performs reciprocating movement in the horizontal direction on a fixed platform. The grinding speed is continuously adjustable within 120 times/min. The rotation of the motor is converted into the horizontal reciprocating motion of the driving mechanism 1 through the screw rod, and the grinding mechanism can be driven to move.
The second part is the grinding mechanism, which includes a grinding block holding mechanism 3 and a grinding block 4, as shown in fig. 6-9. One side of the grinding block clamping mechanism 3 is fixedly connected with the driving mechanism 1, and the driving mechanism 1 drives the grinding block clamping mechanism 3 and the grinding block 4 to do grinding reciprocating motion, so that the grinding of the measuring surface of the vernier caliper is completed.
Before the modification, the feeding distance of a feeding mechanism of the horizontal reciprocating motion of the vernier caliper grinding machine is 15mm, the vernier caliper grinding block 4 is phi 30mm, the generated maximum grinding length is 45mm, and because the length of the measuring surface of the vernier caliper with the upper limit of the measuring range larger than 300mm is 60mm, the vernier caliper grinding machine before the modification cannot grind the vernier caliper with the upper limit of the measuring range larger than 300 mm.
Grinding block fixture 3 and cuboid grinding block 4 through design and manufacture to increase the grinding length, with the requirement of satisfying the vernier caliper measuring surface that grinds the measuring range upper limit to 1000 mm.
The third part is a clamping mechanism, and comprises a clamping base 2, three vernier caliper fastening screws (namely a vernier caliper fastening screw I5, a vernier caliper fastening screw II 6 and a vernier caliper fastening screw III 7) and two clamping base 2 fastening screws (namely a clamping base fastening screw I8 and a clamping base fastening screw II 9). The clamping base is used for installing and fixing the vernier caliper in the grinding process, and the vernier caliper fastening screw I5, the vernier caliper fastening screw II 6 and the vernier caliper fastening screw III 7 are arranged at equal intervals and used for fixing the vernier caliper on the side wall of the clamping base 2, and the clamping base fastening screw I8 and the clamping base fastening screw II 9 are arranged at intervals and used for fixing the clamping base 2 on a fixing platform, as shown in figure 2.
The clamping base 2 is 150mm long and 30mm high, and as shown in fig. 3-5, the outside diameters of the vernier caliper fastening screw I5, the vernier caliper fastening screw II 6 and the vernier caliper fastening screw III 7 which are connected at the side edges are M5. The outer diameter of a clamping base fastening screw I8 and a clamping base fastening screw II 9 which are connected at the bottom is M6. As shown in fig. 10-11.
The modified front vernier caliper grinding machine can only clamp a vernier caliper with the measuring jaw length of 60mm, the measuring jaw length of the vernier caliper with the measuring range from the upper limit to 1000mm is 90mm, and the clamping base 2 for installing and fixing the vernier caliper with the measuring range from the upper limit to 1000mm must be designed and manufactured so that the vernier caliper with the measuring range from the upper limit to 1000mm can be clamped and fixed.
When mounted, the polishing pad 4 is a rectangular parallelepiped of 20mm × 20mm × 65 mm. Firstly, a grinding block clamping mechanism 3 is arranged on a driving mechanism 1, a clamping base 2 is arranged on a fixed platform and is fixed by a clamping base fastening screw I8 and a clamping base fastening screw II 9.
The clamping base 2, the grinding block clamping mechanism 3, the grinding block 4, the vernier caliper fastening screw and the clamping base 2 are all made of 45# steel.
During grinding, a vernier caliper with the upper limit of the measuring range of 1000mm is fixed on the clamping base 2 and is fastened through a vernier caliper fastening screw I5, a vernier caliper fastening screw II 6 and a vernier caliper fastening screw III 7, as shown in fig. 2, the grinding block 4 is arranged in the grinding block clamping mechanism 3, the measuring claw is stressed to be in contact with the grinding block 4, and the driving mechanism 1 is started to finish grinding the measuring surface of the vernier caliper with the upper limit of the measuring range of 1000 mm.
If the vernier caliper is improperly used and maintained, the measuring surface is rusted, abraded and deformed, and the measuring surface of the vernier caliper needs to be ground and repaired, so that the requirements of the verification regulation of JJJG 30-2012 'Universal Caliper' are met. The grinding of the measuring surface of the vernier caliper is divided into a rough grinding part and a fine grinding part, and the grinding methods are the same.
In this embodiment, taking rough grinding as an example, the method for using the vernier caliper grinding machine with the measurement range up to 1000mm includes the following steps:
s1, during rough grinding, firstly, adjusting the interaction items of the parts of the vernier caliper to be qualified, wherein the interaction items of the parts of the vernier caliper are within the upper limit of the measurement range to be ground to 1000mm according to the requirements of the JJG30-2012 Universal Caliper verification regulations on the interaction of the parts of the vernier caliper.
S2, fixing the vernier caliper which needs to be ground and has the upper limit of the measurement range of 1000mm by the vernier caliper fastening screw I5, the vernier caliper fastening screw II 6 and the vernier caliper fastening screw III 7 on the clamping base 2, clamping the fixed measuring jaw of the vernier caliper during clamping, wherein the tail part of the main scale of the vernier caliper is above, the measuring surface of the vernier caliper is in a horizontal state, and the clamping base 2 is clamped at the approximate middle part of the fixed measuring jaw of the vernier caliper. As shown in fig. 2.
S3, fully considering the effective stroke of the grinding block 4 during reciprocating feeding grinding; the grinding block 4 is always in contact with the whole measuring surface of the vernier caliper during grinding.
S4, coating the two parallel polishing surfaces of the polishing block 4 with a polishing agent (in rough polishing, the polishing agent is prepared by mixing W20 diamond polishing paste and kerosene according to a ratio of 8: 2), combining the two measuring jaws of the vernier caliper to make the measuring surfaces of the measuring jaws contact with the two parallel polishing surfaces of the polishing block 4 coated with the polishing agent, and applying force to make the two measuring jaws of the vernier caliper clamp the upper and lower polishing surfaces of the polishing block 4, as shown in fig. 2.
And S5, starting the driving mechanism 1, driving the grinding block clamping mechanism 3 by the driving mechanism 1, and driving the grinding block 4 to do reciprocating feeding motion by the grinding block clamping mechanism 3 to finish grinding and repairing the measuring surface of the vernier caliper. The grinding agent is filled at random in the grinding process.
S6, observing the grinding degree of rust and abrasion of the measuring surface of the vernier caliper by eye force until the grinding degree meets the grinding requirement, judging the deformed grinding by a 1-level knife edge square, and judging the method as follows:
if the measuring surfaces of the two measuring claws of the vernier caliper are not perpendicular to the ruler body (visible light gap), when the included angle between the measuring surfaces of the two measuring claws of the vernier caliper and the ruler body is judged to be more than 90 degrees, the force is applied to the inner end of the measuring claw, close to the main ruler, of the measuring surface of the vernier caliper during grinding. When the included angle between the measuring surfaces of the two measuring claws of the vernier caliper and the ruler body is judged to be less than 90 degrees, the outer end of the measuring claw, far away from the main ruler, of the measuring surface of the vernier caliper is stressed during grinding. Until the requirement of fine grinding is met.
Secondly, if the measuring surfaces of the two measuring jaws of the vernier caliper are not perpendicular to the side surfaces of the measuring jaws, when the knife edge square is clamped on the side surfaces of the measuring jaws and the measuring surfaces of the measuring jaws, visible light gaps exist, the contact point of the measuring surfaces of the measuring jaws and the knife edge square is a high point, stress is applied to the high point during grinding until the visible light gaps disappear, and the requirement of fine grinding is met.
When in fine grinding, another grinding block 4 specially used for fine grinding is selected, and the grinding agent coated on the grinding surface of the grinding block 4 is prepared by mixing W7 diamond grinding paste and kerosene according to the proportion of 8: 2. The grinding method and requirements of the fine grinding are the same as those of the rough grinding.
Whether rough grinding or fine grinding is adopted, the grinding block 4 is moved left and right as far as possible to be in uniform contact with the measuring surface of the vernier caliper during grinding, so that the abrasion of the grinding block 4 is reduced.
The abrasive segments 4 should be inspected periodically for flatness and parallelism of the abrasive surfaces, the flatness of the abrasive surfaces of the abrasive segments 4 is not more than 0.01mm, and the parallelism of the abrasive surfaces of the abrasive segments 4 is not more than 0.01 mm.
At present, the repair group of the measuring department of the detection company finishes the equipment transformation of the vernier caliper grinding machine with the upper limit of the measuring range of 1000mm, and is put into the daily grinding work of the vernier caliper formally. From the actual operation effect, the design expectation is reached.
The working hours required for manually grinding the measuring surface of the vernier caliper with the upper limit of the measuring range of 1000mm are nearly 4 hours. After the coarse grinding of the measuring surface is carried out by using the vernier caliper grinding machine with the upper limit of the measuring range of 1000mm, the fine grinding of the measuring surface of the vernier caliper is carried out manually, and the total time is 1 hour. A vernier caliper with 6 measuring ranges (300-1000) mm is ground in each working day, and the working efficiency is greatly improved. If 50 yuan of maintenance fee is charged for each piece of grinding of the measuring surface of the vernier caliper, the maintenance fee is increased in the additional year as follows: 50 yuan × 6 × 21.5 × 12 ═ 77400 yuan.
The grinding device has the advantages of continuously adjustable grinding speed, high grinding efficiency and the like, improves the grinding work efficiency, reduces the labor intensity of operators, and has a large grinding range through the designed grinding block 4 and the grinding block clamping mechanism 3. The grinding requirement of the vernier caliper with the upper limit of the grinding measurement range to 1000mm is met.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A vernier caliper grinding machine having a measurement range up to 1000mm, comprising:
the driving mechanism (1) is connected with the fixed platform, the driving mechanism (1) is connected with a screw rod, the screw rod is connected with a motor, the screw rod is driven by the motor, and the driving mechanism (1) is further driven to reciprocate on the fixed platform in the horizontal direction;
the clamping mechanism is fixedly connected with the fixed platform and comprises a clamping base (2) for installing and fixing the vernier caliper, at least three fastening screws for the vernier caliper and at least two fastening screws for fixing the clamping base (2) for the clamping base (2); the middle part of the clamping base (2) is provided with a U-shaped groove, the side wall of one side of the clamping base is provided with at least three threaded holes, the threaded holes are matched and connected with the vernier caliper fastening screws, the vernier caliper is arranged in the U-shaped groove and is fixed on the side wall of the clamping base (2) through the vernier caliper fastening screws; the bottom of the U-shaped groove is at least provided with two mounting holes, the mounting holes are matched and connected with fastening screws of the clamping base (2), and the clamping base (2) is fixed on a fixed platform through the fastening screws of the clamping base (2);
the grinding mechanism is connected with the driving mechanism (1) and comprises a grinding block clamping mechanism (3) and a grinding block (4), one side of the grinding block clamping mechanism (3) is fixed on the driving mechanism (1), the other side of the grinding block clamping mechanism is provided with a through groove, the grinding block (4) is embedded in the through groove, and grinding surfaces of the grinding block (4) are distributed on the upper surface and the lower surface and are respectively contacted with the measuring surfaces of two measuring claws on the vernier caliper; the driving mechanism (1) drives the grinding block clamping mechanism (3) and the grinding block (4) to do grinding reciprocating motion, and grinding of the measuring surface of the vernier caliper is completed.
2. Vernier caliper grinding machine with a measurement range up to 1000mm according to claim 1, characterized in that the clamping base (2), the grinding block clamping mechanism (3), the grinding block (4), the vernier caliper fastening screw and the clamping base (2) fastening screw are all 45# steel.
3. Vernier caliper grinding machine with a measurement range up to 1000mm according to claim 1 or 2, characterized in that the clamping base (2) has a length of 150mm and a height of 30mm, the vernier caliper fastening screw has an outer diameter of M5 and the clamping base (2) fastening screw has an outer diameter of M6.
4. Vernier caliper grinding machine with a measurement range up to 1000mm according to claim 1 or 2, characterized in that the grinding block (4) is a right cuboid of 20mm x 65 mm.
5. Vernier caliper grinding machine with a measurement range up to 1000mm according to claim 4, characterized in that both the upper and lower surfaces of the grinding block (4) are coated with an abrasive, the upper and lower surfaces being parallel.
6. A method of using a vernier caliper grinding machine with a measuring range up to 1000mm according to any of claims 1 to 5, comprising the steps of:
s1, firstly, adjusting the interaction items of the parts of the vernier caliper with the upper limit of the measurement range to be ground to 1000mm to be qualified according to the requirements of JJJG 30-2012 Universal Caliper verification regulations on the interaction of the parts of the vernier caliper;
s2, clamping the vernier caliper in the clamping base (2) and fixing the vernier caliper by a fastening screw of the vernier caliper, clamping a fixed measuring jaw of the vernier caliper during clamping, wherein the tail part of a main scale of the vernier caliper is above, a measuring surface of the vernier caliper is in a horizontal state, and the clamping base (2) is clamped in the middle part of the fixed measuring jaw of the vernier caliper;
s3, fully considering the effective stroke of the grinding block clamping mechanism (3) during reciprocating feeding grinding; ensuring that the grinding block (4) is always contacted with the whole measuring surface of the vernier caliper during grinding;
s4, coating the two parallel grinding surfaces on the grinding block (4) with the grinding agent, combining the measuring claws of the vernier caliper to enable the measuring claw measuring surfaces to be in contact with the two grinding surfaces of the grinding block (4) coated with the grinding agent, and applying force to enable the two measuring claws of the vernier caliper to clamp the upper and lower grinding surfaces of the grinding block (4);
s5, starting the driving mechanism (1), wherein the driving mechanism (1) drives the grinding block clamping mechanism (3), and the grinding block clamping mechanism (3) drives the grinding block (4) to do reciprocating feeding motion to finish grinding and repairing of the measuring surface of the vernier caliper; filling grinding agent at irregular time in the grinding process;
and S6, observing the grinding degree of rust and abrasion of the measuring surface of the vernier caliper by eye force until the grinding degree meets the grinding requirement, and judging the deformed grinding by a 1-level knife edge square.
7. The method for using a vernier caliper grinding machine with the measurement range of the upper limit to 1000mm as claimed in claim 6, wherein the grinding of the measurement surface of the vernier caliper is divided into rough grinding and fine grinding, and in the rough grinding, the grinding agent is prepared by mixing W20 diamond grinding paste and kerosene according to a ratio of 8: 2; when in fine grinding, the grinding agent is prepared by mixing W7 diamond grinding paste and kerosene according to the proportion of 8: 2.
8. Method for using a vernier caliper grinding machine with a measurement range up to 1000mm according to claim 6, characterized in that the flatness of the grinding surface of the grinding block (4) is not more than 0.01mm, parallelism not more than 0.01 mm.
9. The method for using a vernier caliper grinding machine with the upper limit of the measurement range of 1000mm as claimed in claim 6, wherein the method of the deformed grinding determined by the 1-stage edge square in the step S6 is as follows:
if the measuring surfaces of the two measuring claws of the vernier caliper are not perpendicular to the ruler body and a visual eye gap exists, the included angle between the measuring surfaces of the two measuring claws of the vernier caliper and the ruler body is judged to be more than 90 degrees, and the force is applied to the inner end of the measuring claw, close to the main ruler, of the measuring surface of the vernier caliper during grinding; when the included angle between the measuring surfaces of the two measuring claws of the vernier caliper and the ruler body is judged to be less than 90 degrees, the outer ends of the measuring claws of the measuring surfaces of the vernier caliper far away from the main ruler are stressed during grinding; until the requirement of fine grinding is met;
if the measuring surfaces of the two measuring jaws of the vernier caliper are not perpendicular to the side surfaces of the measuring jaws of the vernier caliper, when the knife edge square is clamped on the side surfaces of the measuring jaws and the measuring surfaces of the measuring jaws, visible light gaps exist, the contact point of the measuring surfaces of the measuring jaws and the knife edge square is a high point, stress is applied to the high point during grinding, and the requirement of fine grinding is met until the visible light gaps disappear.
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| SU1093493A1 (en) * | 1982-12-24 | 1984-05-23 | Московское Специальное Конструкторско-Технологическое Бюро Металлорежущего Инструмента И Оборудования | Machine for grinding measuring surfaces of slide calipers jaws |
| CN202846330U (en) * | 2012-11-30 | 2013-04-03 | 天津职业技术师范大学 | Rolling grinder for repairing measuring surface of measuring jaw of height vernier caliper |
| CN204019330U (en) * | 2014-08-08 | 2014-12-17 | 温岭市新桂量量具厂 | Slide measure external pelivimetry pawl grinder |
| CN204019336U (en) * | 2014-08-08 | 2014-12-17 | 温岭市新桂量量具厂 | Slide measure external pelivimetry pawl grinder |
| CN212527321U (en) * | 2020-08-29 | 2021-02-12 | 大连大重检测技术服务有限公司 | Vernier caliper grinding machine with upper limit of measurement range to 1000mm |
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2020
- 2020-08-29 CN CN202010890738.5A patent/CN111872842B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1093493A1 (en) * | 1982-12-24 | 1984-05-23 | Московское Специальное Конструкторско-Технологическое Бюро Металлорежущего Инструмента И Оборудования | Machine for grinding measuring surfaces of slide calipers jaws |
| CN202846330U (en) * | 2012-11-30 | 2013-04-03 | 天津职业技术师范大学 | Rolling grinder for repairing measuring surface of measuring jaw of height vernier caliper |
| CN204019330U (en) * | 2014-08-08 | 2014-12-17 | 温岭市新桂量量具厂 | Slide measure external pelivimetry pawl grinder |
| CN204019336U (en) * | 2014-08-08 | 2014-12-17 | 温岭市新桂量量具厂 | Slide measure external pelivimetry pawl grinder |
| CN212527321U (en) * | 2020-08-29 | 2021-02-12 | 大连大重检测技术服务有限公司 | Vernier caliper grinding machine with upper limit of measurement range to 1000mm |
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