Measuring scale flatness repairing device
By introducing a drum set and a cooling device into the π ruler repair device, the problem of frictional heat deformation during the repair process is solved, and efficient and convenient π ruler flatness repair is achieved, maintaining measurement accuracy and saving costs.
Patent Information
- Application Number
- CN202422118982.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-29
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-08-29
AI Technical Summary
When repairing π rulers, existing flattening machines are prone to heat deformation due to frictional heat generation, and lack effective cooling devices, which affects measurement accuracy.
A measuring scale flatness repair device is designed, including a drum set and a cooling device. The drum set drives the drum to rotate through the drive device to apply extrusion pressure to the π ruler for trimming, and the cooling device sprays coolant to reduce the temperature at the friction point.
Effectively avoid deformation of the π ruler due to high temperature, maintain measurement accuracy, improve trimming efficiency, facilitate operation, and save costs.
Smart Images
Figure CN223159856U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of measuring tools, and particularly relates to a ruler flatness repair device. Background Art
[0002] The core structure of a π ruler is carefully crafted from a highly elastic steel strip and is designed specifically for measuring the average diameter of circular or nearly circular objects. Under the precise requirements of modern manufacturing, π rulers have evolved into diverse types. For example, precision π rulers are customized for high-precision measurement scenarios; stainless steel π rulers are the first choice in many industries due to their excellent corrosion resistance and durability; and there are also imperial π rulers to meet specific measurement needs in international exchanges. These π rulers all possess remarkable characteristics such as high precision, easy operation, and high temperature resistance, and can flexibly handle the challenges of different workpiece materials and sizes. π rulers are widely used in industries such as machining, construction, and design, and have become an essential measuring tool.
[0003] However, with the increase in usage frequency, especially when π rulers made mostly of ferritic stainless steel or stainless steel are frequently used, without proper maintenance or improper operation, their performance will be greatly reduced. The ruler body may be deformed and bent due to long-term uneven stress, and the surface may also have problems such as wrinkling, twisting, and unevenness. The change in the flatness of the ruler directly affects the accuracy of the measurement results, and may thus lead to product size deviations in the production and processing links, affecting product quality. However, simply replacing a new π ruler is not only costly but also does not conform to the concept of resource conservation and sustainable development.
[0004] Currently, the main repair method for π rulers with damaged flatness is to use a flattening machine for repair. However, a large amount of heat is generated during the friction process between the π ruler and the roller of the flattening machine. Since the π ruler itself is made of relatively thin metal material, it is very easy to deform at high temperatures, resulting in changes in the accuracy of the π ruler. Moreover, the flattening machines on the market generally lack a cooling device and cannot effectively cool the π ruler. Content of the Utility Model
[0005] One of the purposes of the utility model is to solve the problem in the prior art that when using a flattening machine to repair a π ruler, it is easy for the π ruler to be deformed by heat generated due to friction. A ruler flatness repair device is provided to cool the π ruler during the friction process between the roller and the π ruler, so that the π ruler is not easily deformed by heat and can maintain a high degree of accuracy.
[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0007] A ruler flatness repair device includes a chassis, a plurality of roller groups mounted on the chassis and arranged in parallel, a driving device mounted in the chassis, and a cooling device mounted on the chassis. Each roller group includes two rollers arranged vertically, and the axes of the two rollers in each roller group are located in the same plane. Each roller is rotatably connected to the chassis. The driving device is used to drive one roller in each roller group to rotate or the two rollers to rotate in opposite directions at the same speed. The cooling device includes an oil storage tank mounted in the chassis and a nozzle mounted on the chassis. The nozzle and the oil storage tank are connected by an oil pipeline, and an oil pump is mounted on the oil pipeline. The nozzle extracts coolant through the oil pump and can spray the coolant onto the roller group.
[0008] In the above technical solution, the operator passes the π-ruler to be trimmed through between the two rollers. The distance between the rollers is equal to or slightly smaller than the standard thickness of the π-ruler. After starting the driving device, the driving device will drive one roller in each roller group to rotate or the two rollers to rotate in opposite directions at the same speed. The two rollers in each roller group are in line contact with the π-ruler. When the uneven part of the π-ruler passes through the rollers, the two rollers will apply a squeezing force to the π-ruler, so that the uneven part of the π-ruler is trimmed back to its original shape. The rotation of the rollers will apply a frictional force to drive the π-ruler to move, causing the position of the trimmed part of the π-ruler to change, without the operator manually moving the π-ruler, so that the entire π-ruler can be easily trimmed, with higher efficiency and better convenience. If there are multiple roller groups, the device has a higher trimming efficiency and better effect on the π-ruler. When the roller group trims the π-ruler, the friction between the roller and the π-ruler will cause the temperature to rise sharply, which may cause the π-ruler to be deformed by heat or the machine to be damaged. The nozzle can extract coolant from the oil storage tank and spray the coolant at the contact area between the π-ruler and the roller. The coolant has the characteristic of high specific heat capacity and can absorb a large amount of heat, reducing the temperature at the friction area and avoiding problems with the measurement accuracy due to the deformation of the π-ruler at high temperature.
[0009] Preferably, a displacement part is provided on the chassis, the nozzle is mounted on the displacement part, and the nozzle is slidably connected or rotatably connected to the displacement part. The nozzle can change its position on the displacement part, so that the position of the nozzle can be adjusted to cool different roller groups.
[0010] Preferably, an oil receiving basin recessed inward is further provided on the chassis. The roller group is located vertically between the oil outlet of the nozzle and the oil receiving basin. After the coolant is sprayed, it will fall into the oil receiving basin under the influence of gravity, avoiding the coolant from contaminating the machine or the environment. At the same time, the oil receiving basin can also collect the coolant, and the coolant can be recycled to save costs.
[0011] Preferably, an oil return pipe is further arranged in the chassis. A plurality of oil return openings are formed in the oil receiving basin. One end of the oil return pipe is connected to the oil return opening, and the other end is connected to the oil storage tank. The coolant in the oil receiving basin can enter the oil return pipe through the oil return opening and flow into the oil storage tank under the action of gravity, completing the recovery of the coolant and avoiding manual oil return, which is more convenient.
[0012] Preferably, the two drums of each drum group are respectively a driving drum and a driven drum. The driving device is used to drive the driving drum to rotate, and the friction between the π ruler and the driven drum drives the driven drum to rotate. When the driving drum rotates, a frictional force that drives its movement is applied to the π ruler. Therefore, when the π ruler moves, a frictional force that drives the driven drum to rotate is applied to the driven drum, and the rotation direction is opposite to that of the driving drum. Compared with driving both drums, this solution uses less work, is more energy-efficient, and does not require adjusting the speeds of the two drums to be the same, avoiding the situation where the advancing speeds on both sides of the π ruler are different due to different rotational speeds of the two drums, resulting in the π ruler being bent and deformed.
[0013] Preferably, several mounting plates perpendicular to the chassis are provided at one end of the chassis away from the ground. Both ends in the axial direction of the drum group are mounted on the mounting plates. The design of the mounting plates makes the operation positions concentrated outside the chassis, which is more convenient for operation and has better convenience.
[0014] Preferably, the driving device includes speed-regulating motors equal in number to the drum groups. A driven wheel is provided at one end of the driving drum, and a driving wheel that drives the driven wheel to rotate is provided at the output end of the speed-regulating motor. Each speed-regulating motor drives one driving drum to rotate. The speed-regulating motor can accurately control and adjust the rotational speed of the motor, thereby changing the rotational speed of the driving drum. Different rotational speeds are suitable for π rulers of different lengths and thicknesses. When the π ruler is longer, a higher rotational speed can be selected to improve the repair efficiency. When the π ruler is thicker, a lower rotational speed can be selected for better repair effect and better applicability. When using multiple drum groups, the rotational speeds of multiple speed-regulating motors can be adjusted so that the rotational speeds of the driving drums increase sequentially along the feeding direction of the π ruler, thereby generating a pulling force on the π ruler and making the deviation of the π ruler in this device less and the stability better.
[0015] Preferably, a distance-adjusting device is further included. The distance-adjusting device is used to adjust the distance between the driving drum and the driven drum. The operator can adjust the distance between the driving drum and the driven drum according to the thickness of the π ruler to be corrected, which has better applicability.
[0016] Preferably, the distance adjustment device includes an adjusting bolt and sliders respectively installed at both ends of the driven roller. The top surface of the slider abuts against the adjusting bolt. The slider is slidably connected to the mounting plate. The adjusting bolt is threadedly connected to the mounting plate. The slider is rotatably connected to the driven roller. By turning the adjusting bolt, one end of the adjusting bolt can abut against the slider and push the slider to move, shortening the distance between the driving roller and the driven roller. When it is desired to increase the distance between the driving roller and the driven roller, the adjusting bolt can be turned first so that one end of the adjusting bolt is separated from the top of the slider, and then a π ruler can be inserted or the driven roller can be manually pushed to increase the distance between the driving roller and the driven roller, which is more convenient.
[0017] Preferably, a scale is provided on the adjusting bolt. By observing the scale, it can be ensured that the heights of the two adjusting bolts are the same, so as to ensure that both ends of the driven roller are on the same horizontal plane.
[0018] The beneficial effects of the present utility model: The driving device will drive one roller or two rollers in each roller group to rotate in opposite directions at the same speed, so that the two rollers in each roller group will exert a squeezing force on the π ruler, thereby trimming the uneven part of the π ruler. The rotation of the roller will exert a frictional force on the π ruler to drive the π ruler to move, causing the position of the trimmed part of the π ruler to change, without the operator manually moving the π ruler, so that a whole π ruler can be easily trimmed, with higher efficiency and better convenience. If there are multiple roller groups, the device has higher trimming efficiency and better effect on the π ruler. The cooling device can reduce the temperature at the friction part, avoiding problems with the measurement accuracy caused by damage to the π ruler due to high temperature. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 is a schematic structural diagram of a ruler flatness repair device of the present utility model;
[0020] Figure 2 is an internal structural schematic diagram of a ruler flatness repair device of the present utility model;
[0021] Figure 3 is a schematic structural diagram of the distance adjustment device.
[0022] Wherein, 1. Chassis; 101. Mounting plate; 102. Displacement part; 103. Oil receiving basin; 104. Return oil pipe; 105. Cover plate; 106. Handle; 2. Roller group; 201. Roller; 202. Driving roller; 203. Driven roller; 3. Driving device; 301. Speed regulating motor; 4. Distance adjustment device; 401. Adjusting bolt; 402. Slider; 5. Cooling device; 501. Oil storage tank; 502. Spray pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] The embodiments of the present utility model will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand the other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model. It should be understood that the preferred embodiments are only for explaining the present utility model and not for limiting the protection scope of the present utility model.
[0024] It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present utility model in a schematic manner. Therefore, only the components related to the present utility model are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.
[0025] Embodiment 1
[0026] As Figure 1-2 shown, Embodiment 1 of a repair device for the flatness of a measuring ruler includes a hollow cubic chassis 1, two roller groups 2 installed in parallel on the chassis 1, a driving device 3 installed on the inner wall of the chassis 1, and a cooling device 5 installed on the chassis 1. In this embodiment, the driving device 3 includes two speed-regulating motors 301. At one end of the chassis 1 away from the ground, there is an oil receiving basin 103 and four mounting plates 101. The chassis 1 further includes a cover plate 105 and a handle 106 installed on the cover plate 105. A touch display screen and two emergency stop buttons are provided on the cover plate 105. The cover plate 105 can be opened through the handle 106. Each roller group 2 includes two rollers 201 arranged vertically. The axes of the two rollers 201 are in the same plane. Both of the two rollers 201 are rotatably connected to the mounting plates 101 of the chassis 1. Driven wheels are respectively arranged on the two rollers 201, and the two driven wheels cooperate with each other. The output end of the speed-regulating motor 301 is provided with a driving wheel that drives the two driven wheels to rotate in opposite directions at the same speed. Therefore, the two rollers 201 rotate in opposite directions at the same speed. The cooling device 5 includes an oil storage tank 501 installed in the chassis 1 and a spray pipe 502 installed on the chassis 1. The spray pipe 502 and the oil storage tank 501 are connected through an oil delivery pipe. The spray pipe 502 can spray coolant towards the roller group 2. A displacement part 102 is provided on the chassis 1. In this embodiment, the displacement part 102 is a sliding hole. The sliding hole is located between the two roller groups 2. One end of the spray pipe 502 is installed in the sliding hole and is rotatably connected to the sliding hole. The roller group 2 is located vertically between the oil outlet of the spray pipe 502 and the oil receiving basin 103. A plurality of oil return ports are opened on the oil receiving basin 103. One end of an oil return pipe 104 is connected to the oil return port, and the other end is connected to the oil storage tank 501.
[0027] Specifically, during the actual operation process, the operator passes the π - ruler to be trimmed through between the two rollers 201. The distance between the two rollers 201 is equal to or slightly less than the standard thickness of the π - ruler. After starting the two speed - regulating motors 301, the speed - regulating motors 301 drive the driving wheels connected to them to rotate, thereby driving the two driven wheels to rotate in the opposite direction at the same speed. The contact between the two rollers 201 in each roller group 2 and the π - ruler is a line contact. When the uneven part of the π - ruler passes through the roller 201, the roller 201 will exert a squeezing force on the π - ruler, so that the uneven part of the π - ruler is trimmed back to its original shape. The rotation of the roller 201 will exert a frictional force on the π - ruler to drive the movement of the π - ruler, causing the position of the trimmed part of the π - ruler to change. Without the operator manually moving the π - ruler, the entire π - ruler can be easily trimmed, with higher efficiency and better convenience. At the same time, by adjusting the rotation speeds of the two speed - regulating motors 301, the rotation speeds of the rollers 201 increase sequentially along the feeding direction of the π - ruler, thereby generating a pulling force on the π - ruler, making the deviation of the π - ruler in this device less and the stability better. The cooling device 5 can spray the coolant at the contact between the π - ruler and the roller 201. The coolant has the characteristic of a high specific heat capacity and can absorb a large amount of heat. The coolant tank 501 can store the coolant. After the coolant passes through the oil outlet of the spray pipe 502, it will be sprayed in a spray shape, increasing the cooling area and making the cooling more uniform. The spray pipe 502 can rotate in the sliding hole, so as to change the spraying position of the coolant to cool the two roller groups 2. After the coolant is sprayed, it will fall into the oil - receiving basin 103 under the influence of gravity, avoiding the pollution of the machine or the environment by the coolant. At the same time, the oil - receiving basin 103 can also collect the coolant, and the coolant can be recycled, saving costs. The coolant in the oil - receiving basin 103 can enter the oil return pipe 104 through the oil return port and flow into the coolant tank 501 under the action of gravity, completing the recovery of the coolant and avoiding manual oil return, with better convenience. The status of this device can be observed and the device can be controlled through the touch display screen. In case of an emergency, pressing the emergency stop button will stop all operations and cut off the power supply, playing a safety protection role.
[0028] Beneficial effects of this embodiment: By adjusting the motor 301 to drive the roller 201 to rotate, an extrusion force is applied to the π-scale, so that the uneven part of the π-scale is trimmed to the original thickness. When the roller 201 rotates, a frictional force that drives the π-scale to move is applied to the π-scale, causing the position of the trimmed part of the π-scale to change, eliminating the need for the operator to manually move the π-scale, thereby enabling the entire π-scale to be easily trimmed, with higher efficiency and better convenience. By adjusting the rotational speeds of the two speed-regulating motors 301 to be different, a pulling force is generated on the π-scale, resulting in less offset of the π-scale in this device and better stability. The cooling device 5 can spray the coolant at the contact between the π-scale and the roller 201, reducing the temperature generated by friction and preventing the π-scale from deforming due to high temperature, thus avoiding problems with measurement accuracy. The coolant tank 501 can store the coolant. After passing through the oil outlet of the spray pipe 502, the coolant will be sprayed in a dispersed manner, increasing the cooling area and making the cooling more uniform. The oil collecting basin 103 and the oil return pipe 104 can prevent the coolant from contaminating the machine or the environment, and at the same time facilitate the recycling of the coolant, enabling the coolant to be recycled and cost savings.
[0029] Here are two other embodiments of the displacement part 102. In the first embodiment, the displacement part 102 is a slide rail that surrounds all the roller groups 2. One end of the spray pipe 502 is installed inside the slide rail, and the spray pipe 502 is slidably connected to the slide rail. This embodiment is more suitable for the case where there are more than two roller groups 2, and the different roller groups 2 can be cooled by sliding the spray pipe 502. In the second embodiment, the displacement part 102 is a chute that surrounds all the roller groups 2. The sliding block is installed inside the chute and is slidably connected to the chute. The spray pipe 502 is rotatably connected to the sliding block, which can not only achieve the change of the position of the spray pipe 502 but also the change of the spraying angle.
[0030] Embodiment 2
[0031] As Figure 1-3 shown in Embodiment 2 of a device for repairing the flatness of a measuring scale, the difference from Embodiment 1 is that each roller group 2 includes a driving roller 202 and a driven roller 203. The axes of the driving roller 202 and the driven roller 203 are located in the same plane. Both the driving roller 202 and the driven roller 203 are rotatably connected to the mounting plate 101 of the chassis 1. One end of the driving roller 202 is provided with a driven wheel, and the output end of the speed-regulating motor 301 is provided with a driving wheel that drives the driven wheel to rotate. Each driving speed-regulating motor 301 drives one driving roller 202 to rotate.
[0032] Specifically, during actual operation, the operator passes the π ruler to be trimmed through between the driving roller 202 and the driven roller 203. The distance between the driving roller 202 and the driven roller 203 is equal to or slightly less than the standard thickness of the π ruler. After starting the two speed regulating motors 301, the speed regulating motors 301 drive the driving wheels connected thereto to rotate, thereby driving the driven wheels installed at one end of the driving roller 202 to rotate, and then driving the driving roller 202 to rotate. The driving roller 202 applies a frictional force to drive the π ruler to move. Therefore, the movement of the π ruler will apply a frictional force to drive the driven roller 203 to rotate, and the rotation direction is opposite to that of the driving roller 202. The driving roller 202, the driven roller 203 and the π ruler are all in line contact. When the uneven part of the π ruler passes between the driving roller 202 and the driven roller 203, since the thickness at this part is greater than the distance between the driving roller 202 and the driven roller 203, the driving roller 202 and the driven roller 203 will apply a squeezing force to the π ruler, so that the uneven part of the π ruler is trimmed back to its original shape. The rotation of the driving roller 202 will apply a frictional force to drive the π ruler to move, causing the position of the π ruler being trimmed to change. Without the operator manually moving the π ruler, the entire π ruler can be easily trimmed, with higher efficiency and better convenience. Compared with the case where both rollers 201 are driven, this embodiment uses less work and is more energy-saving.
[0033] The remaining features and technical effects of this embodiment are the same as those of Embodiment 1.
[0034] Embodiment 3
[0035] As Figure 1-3 shown in Embodiment 3 of a device for repairing the flatness of a π ruler, the difference from Embodiment 2 is that it further includes a distance adjusting device 4. In this embodiment, the distance adjusting device 4 includes an adjusting bolt 401 and sliders 402 respectively installed at both ends of the driven roller 203. The adjusting bolt 401 is threadedly connected to the mounting plate 101. The top surface of the slider 402 abuts against the adjusting bolt 401 and is slidably connected to the mounting plate 101. The adjusting bolt 401 is rotatably connected to the driven roller 203, and a scale is provided on the adjusting bolt 401. By turning the adjusting bolt 401, one end of the adjusting bolt 401 can abut against the slider 402 and push the slider 402 to move, shortening the distance between the driving roller 202 and the driven roller 203. When wanting to increase the distance between the driving roller 202 and the driven roller 203, the adjusting bolt 401 can be first turned so that one end of the adjusting bolt 401 separates from the top surface of the slider 402, and then a π ruler is inserted between the driving roller 202 and the driven roller 203 or the driven roller 203 is manually pushed to increase the distance between the driving roller 202 and the driven roller 203, with better convenience. By observing the scale, it can be ensured that the heights of the two adjusting bolts 401 are the same, so as to ensure that both ends of the driven roller 202 are on the same horizontal plane, and the trimming effect on the π ruler is also better.
[0036] The remaining features and technical effects of this implementation are the same as those of Embodiment 2.
[0037] The above embodiments are only preferred embodiments given to fully illustrate the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art of this technology on the basis of the present utility model are all within the protection scope of the present utility model.
Claims
1. A flatness repair device for a measuring ruler, characterized in that, It includes a chassis (1), several roller groups (2) installed on the chassis (1) and arranged in parallel, a driving device (3) installed inside the chassis (1), and a cooling device (5) installed on the chassis (1). Each roller group (2) includes two rollers (201) arranged vertically. The axes of the two rollers (201) of each roller group (2) are in the same plane. Each roller (201) is rotatably connected to the chassis (1). The driving device (3) is used to drive one roller (201) in each roller group (2) to rotate or the two rollers (201) to rotate in opposite directions at the same speed. The cooling device (5) includes an oil storage tank (501) installed inside the chassis (1) and a nozzle (502) installed on the chassis (1). The nozzle (502) and the oil storage tank (501) are connected by an oil pipeline. An oil pump is installed on the oil pipeline. The nozzle (502) extracts the coolant through the oil pump and can spray the coolant towards the roller group (2).
2. The flatness repair device for a measuring scale according to claim 1, wherein A displacement part (102) is arranged on the chassis (1). The nozzle (502) is installed on the displacement part (102). The nozzle (502) is slidably connected or rotatably connected to the displacement part (102).
3. The flatness repair device for a measuring scale according to claim 2, wherein An oil receiving basin (103) recessed inward is further provided on the chassis (1). The roller group (2) is located vertically between the oil outlet of the nozzle (502) and the oil receiving basin (103).
4. The flatness repair device for a measuring ruler according to claim 3, wherein, An oil return pipe (104) is further arranged inside the chassis (1). Several oil return openings are provided in the oil receiving basin (103). One end of the oil return pipe (104) is connected to the oil return opening, and the other end is connected to the oil storage tank (501).
5. A flatness repair device for a measuring ruler according to any one of claims 1-4, characterized in that, The two rollers (201) of each roller group (2) are respectively a driving roller (202) and a driven roller (203). The driving device (3) is used to drive the driving roller (202) to rotate. The friction between the driving roller (202) and the driven roller (203) drives the driven roller (203) to rotate.
6. The flatness repair device for a measuring scale according to claim 5, characterized in that, Several mounting plates (101) perpendicular to the chassis (1) are provided at one end of the chassis (1) away from the ground. Both ends in the axial direction of the roller group (2) are mounted on the mounting plates (101).
7. The flatness repair device for a measuring scale according to claim 6, wherein, The driving device (3) includes speed regulating motors (301) with the same number as the roller groups (2). A driven wheel is provided at one end of the driving roller (202). A driving wheel for driving the driven wheel to rotate is provided at the output end of the speed regulating motor (301). Each speed regulating motor (301) drives one driving roller (202) to rotate.
8. A flatness repair device for a measuring scale according to claim 7, characterized in that, It further includes a distance adjusting device (4). The distance adjusting device (4) is used to adjust the distance between the driving roller (202) and the driven roller (203).
9. A flatness repair device for a measuring scale according to claim 8, characterized in that, The distance adjusting device (4) includes an adjusting bolt (401) and sliders (402) respectively installed at both ends of the driven roller (203). The top surface of the slider (402) abuts against one end of the adjusting bolt (401). The slider (402) is slidably connected to the mounting plate (101). The adjusting bolt (401) is threadedly connected to the mounting plate (101). The slider (402) is rotatably connected to the driven roller (203).
10. A flatness repair device for a measuring ruler according to claim 9, characterized in that, A scale is provided on the adjusting bolt (401).