Bearing information presentation device

Abstract

To provide a bearing information presentation device capable of presenting measurement values of accuracy items for individual bearings.SOLUTION: A bearing information presentation device 1 includes: a storage unit 4 that stores pieces of association information in which a piece of bearing identification information is associated with a measurement value of a bearing accuracy item for each of a plurality of bearings; a reception unit 11 that receives extraction conditions for bearings to be presented; an extraction unit 12 that extracts pieces of association information associated with the received extraction conditions from a plurality of pieces of association information stored in the storage unit 4; and a presentation unit 13 that presents the pieces of association information extracted by the extraction unit 12.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a bearing information presentation device that presents information about a bearing. [Background technology]

[0002] There are various types of bearings, such as the rolling bearing described in Patent Document 1. Such bearings are constructed by assembling a number of parts. In general, when manufacturing bearing parts, there may be variation in the dimensions of the parts. For this reason, in order to improve the precision of the bearings, each part is manufactured with greater precision. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2002-213457 A Summary of the Invention [Problem to be solved by the invention]

[0004] Such bearings are manufactured to conform to a predetermined accuracy standard. However, even bearings that conform to the standard may have variations in dimensions within the range of the standard. For example, when selecting bearings to be incorporated into various machines such as machine tools, high-precision finishing is required for the bearings and the mating parts so that they have a predetermined fit with the mating parts in order to provide appropriate rigidity and high speed performance. When procuring bearings to be incorporated into such machines, although it is known that each bearing has an accuracy within the standard, it is not possible to know where the actual dimensions of each individual bearing fall within the accuracy standard until measurements are taken after procurement or the inspection report included with the product is checked.

[0005] Therefore, an object of the present invention is to provide a bearing information presentation device that can present the value within the accuracy standard of each individual bearing. [Means for solving the problem]

[0006] The bearing information presentation device of the present invention comprises a memory unit that stores correspondence information that matches, for each of a plurality of bearings, bearing identification information with measurement values ​​of the bearing's accuracy items, a reception unit that receives extraction conditions for the bearings to be presented, an extraction unit that extracts correspondence information that corresponds to the accepted extraction conditions from the plurality of pieces of correspondence information stored in the memory unit, and a presentation unit that presents the correspondence information extracted by the extraction unit.

[0007] This bearing information presentation device stores correspondence information that associates bearing identification information with measurement values ​​of bearing accuracy items. The bearing information presentation device can then extract correspondence information that corresponds to the received extraction conditions and present this correspondence information. In this way, the bearing information presentation device can present which value within the accuracy standard each individual bearing that corresponds to the extraction conditions is a product of. This enables bearing users to select and choose the bearing they want.

[0008] In the above-mentioned bearing information presentation device, the corresponding information may further correspond to the identification information and the measurement value with a model number of the bearing, the reception unit may receive the model number as an extraction condition, the extraction unit may extract, from the plurality of pieces of corresponding information, the corresponding information including the model number received by the reception unit, and the presentation unit may present at least the identification information and the measurement value contained in the corresponding information when presenting the extracted corresponding information. In this case, the bearing information presentation device can present which value within the accuracy standard the bearing corresponding to the received model number is a product of.

[0009] In the above-mentioned bearing information presentation device, the reception unit may receive numerical conditions of the bearing's accuracy items as extraction conditions, and the extraction unit may extract, from the plurality of pieces of corresponding information, corresponding information including measurement values ​​corresponding to the numerical conditions received by the reception unit. In this case, the bearing information presentation device can extract bearings with measurement values ​​corresponding to the received numerical conditions. The bearing information presentation device can then present which value within the accuracy standard the bearing corresponding to the received numerical conditions is a product of. Effect of the Invention

[0010] According to the present invention, it is possible to indicate which value within the accuracy standards each individual bearing falls within. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a block diagram showing the overall configuration of a bearing information presentation device according to an embodiment. [Diagram 2] FIG. 2 is a table showing an example of the correspondence information. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] An exemplary embodiment of the present invention will be described below. A bearing information presentation device 1 according to this embodiment shown in Fig. 1 presents information about individual bearings. For example, the bearing information presentation device 1 is used by bearing suppliers and bearing users (bearing procurers), etc. Hereinafter, users (bearing suppliers, bearing users, etc.) who use the bearing information presentation device 1 to receive presented information may be referred to as information requesters.

[0013] The bearing information presentation device 1 includes an input unit 2, a display unit 3, a memory unit 4, and an ECU [Electronic Control Unit] 5. The input unit 2 is an input device used by an information requester to input various pieces of information. For example, the input unit 2 may include at least one of a keyboard, a touch panel, a mouse, and the like. The information requester can use the input unit 2 to input extraction conditions for the bearings for which information is requested to be presented. The display unit 3 is a display device (monitor) that presents information to the information requester.

[0014] The memory unit 4 stores correspondence information that associates the bearing identification information with the measurement values ​​(workmanship) of the bearing's precision items for each of a plurality of bearings. In other words, the memory unit 4 stores a plurality of pieces of correspondence information corresponding to each bearing. In addition to the bearing identification information and the measurement values ​​of the precision items, the correspondence information further associates the bearing model number (nominal number, model number). The bearing identification information is information for identifying each individual bearing. There is no particular restriction on the format of the identification information. By assigning identification information to each individual bearing, it is possible to identify a bearing having a measurement value of a specified precision item based on the correspondence information. In other words, the identification information is information necessary for identifying a bearing having a measurement value of a specified precision item.

[0015] Bearing precision items are measurement items related to bearing precision. These precision items include, for example, the dimensions of each part of the bearing. These precision items may also include measurement items other than dimensions. Furthermore, the measured values ​​of bearing precision items are values ​​obtained by actually measuring each bearing. Furthermore, bearing precision items may differ depending on the type of bearing.

[0016] An example of the precision items when the bearing is a deep groove ball bearing is shown in Fig. 2. However, these are just examples, and the precision items are not limited to these. As an example, the precision items in this case may include the average inner diameter difference in the plane of the inner ring, the average outer diameter difference in the plane of the outer ring, the inner ring width difference, the outer ring width difference, the internal clearance, and the inner ring radial runout.

[0017] Measurement of these accuracy items may be performed, for example, by a bearing manufacturer, etc. Then, the bearing manufacturer, etc. may generate corresponding information for each of a plurality of bearings based on the measured values ​​of the accuracy items, etc.

[0018] The ECU 5 is an electronic control unit having a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), etc. The ECU 5 realizes various functions by, for example, loading a program recorded in the ROM into the RAM and executing the program loaded into the RAM by the CPU. Functionally, the ECU 5 includes a reception unit 11, an extraction unit 12, and a presentation unit 13.

[0019] The reception unit 11 receives extraction conditions for the bearings to be presented. Here, the reception unit 11 receives extraction conditions input by the information requester using the input unit 2. The information requester can input various conditions as the extraction conditions. The reception unit 11 can receive the model number input by the information requester as the extraction condition. The reception unit 11 can also receive numerical conditions for the bearing precision items input by the information requester as the extraction condition. The reception unit 11 may receive items other than these as extraction conditions.

[0020] The extraction unit 12 extracts correspondence information corresponding to the extraction condition accepted by the acceptance unit 11 from among the multiple pieces of correspondence information stored in the storage unit 4. For example, a model number may be accepted as an extraction condition. In this case, the extraction unit 12 can extract correspondence information including the accepted model number from among the multiple pieces of correspondence information stored in the storage unit 4.

[0021] For example, a numerical condition for a bearing's accuracy item may be received as an extraction condition. The numerical condition may be a numerical value for the accuracy item desired by the information requester, or may be a numerical range. In this case, the extraction unit 12 can extract corresponding information including a measurement value corresponding to the received numerical condition from among a plurality of pieces of corresponding information stored in the storage unit 4. In other words, the extraction unit 12 extracts corresponding information that satisfies the numerical condition for the received accuracy item. For example, a model number and a numerical condition for the accuracy item may be received as extraction conditions. In this case, the extraction unit 12 can extract corresponding information that satisfies both the received model number and numerical condition.

[0022] The presentation unit 13 presents the correspondence information extracted by the extraction unit 12 to the information requester using the display unit 3. When presenting the extracted correspondence information, the presentation unit 13 presents at least the identification information and the measurement value included in the correspondence information. The presentation unit 13 may further present the model number included in the correspondence information.

[0023] For example, suppose that an information requester inputs a bearing model number "6206P4" as an extraction condition. In this case, the extraction unit 12 extracts corresponding information that corresponds to the model number "6206P4". Then, as shown in FIG. 2 as an example, the presentation unit 13 presents the corresponding information for the model number "6206P4" to the information requester using the display unit 3. Here, as an example, the presentation unit 13 presents this corresponding information in a table format. This allows the information requester to grasp the identification information of a bearing having the measurement value of a desired accuracy item by checking the presented information.

[0024] Similarly, when an information requester inputs a numerical condition for a bearing's accuracy item as an extraction condition, the presentation unit 13 presents corresponding information for bearings that satisfy the input numerical condition. This allows the information requester to grasp the identification information for bearings that satisfy the numerical condition for the desired accuracy item by checking the presented information.

[0025] As described above, the bearing information presentation device 1 stores correspondence information that associates bearing identification information with measurement values ​​of bearing accuracy items. The bearing information presentation device 1 can then extract correspondence information that corresponds to the received extraction conditions and present this correspondence information. In this way, the bearing information presentation device 1 can present which value within the accuracy standard each individual bearing that corresponds to the extraction conditions is a product of. This enables bearing users to select and choose the bearing they want.

[0026] The corresponding information stored in the memory unit 4 includes the model number of the bearing. In this case, the bearing information presentation device 1 can present the corresponding information of the bearing that corresponds to the received model number. In other words, by inputting a model number, the information requester can confirm which value within the accuracy standard the bearing of that model number is a product of.

[0027] The receiving unit 11 can receive numerical conditions for the accuracy items of the bearings as extraction conditions. In this case, the bearing information presentation device 1 can extract bearings with measurement values ​​that correspond to the received numerical conditions. The bearing information presentation device 1 can then present corresponding information on the bearings that correspond to the received numerical conditions. In other words, by inputting the numerical conditions for the desired accuracy items, an information requester can confirm which value within the accuracy standard a bearing that satisfies the numerical conditions is a product of.

[0028] In this way, the bearing supplier can use the bearing information presentation device 1 to search for bearings that meet an order from a bearing user, and supply the searched bearing to the bearing user. Also, for example, the bearing user can use the bearing information presentation device 1 to search for bearings that have the measured values ​​of desired accuracy items, and order the searched bearing from the bearing supplier. In this way, by using the bearing information presentation device 1, a predetermined fit is achieved between the bearing and the mating part, despite the existence of variations in the measured values ​​of the accuracy items of individual bearings. Therefore, for example, the bearing user can obtain a bearing that has the measured values ​​of the desired accuracy items, without actually purchasing the bearing and measuring the accuracy items or checking the accuracy items using the inspection report included with the bearing. This allows the bearing user to select a bearing and a mating part so that a predetermined fit is achieved between the bearing and the mating part.

[0029] Here, for example, the bearing is a rolling bearing. The "fit" of this bearing affects the internal clearance (residual clearance) of the bearing after it is installed in a machine. For example, if the inner diameter dimensional difference of the bearing's inner ring is -2 μm and the shaft outer diameter dimensional difference (the part of the shaft where the bearing's inner ring is attached) is -4 μm, the "interference" between the inner ring and the shaft is "-2-(-4)=2 μm." If the bearing model number (designation number) is 6206 and the shaft is a solid shaft made of mild steel, the internal clearance of the bearing will be reduced by approximately 1.5 μm due to the 2 μm interference.

[0030] In this way, if the bearing user knows the dimensions of the part where the rolling bearing is mounted, such as the shaft outer diameter and housing inner diameter, when presenting measured values ​​of accuracy items in the bearing information presentation device 1, it is also possible to present calculated values ​​of residual clearance based on the workmanship of each individual bearing.

[0031] Also, the storage unit 4 and ECU 5 of the bearing information presentation device 1 may be installed on an online server, and the input unit 2 and display unit 3 may be connected to the storage unit 4 and ECU 5 via a network. In this case, an information requester can access the storage unit 4 and ECU 5 via the network and be presented with measured values ​​of accuracy items.

[0032] Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications are possible without departing from the spirit of the present invention. [Explanation of symbols]

[0033] 1...bearing information presentation device, 11...reception unit, 12...extraction unit, 13...presentation unit.

Claims

1. a storage unit that stores, for each of a plurality of bearings, correspondence information that associates the identification information of the bearing with the measurement values ​​of the accuracy items of the bearing; a receiving unit that receives extraction conditions for the bearing to be presented; an extraction unit that extracts the corresponding information corresponding to the received extraction condition from among the plurality of pieces of corresponding information stored in the storage unit; a presentation unit that presents the corresponding information extracted by the extraction unit; A bearing information presentation device comprising:

2. The correspondence information further corresponds to a model number of the bearing with respect to the identification information and the measurement value, The reception unit receives the model number as the extraction condition, The extraction unit extracts the correspondence information including the model number accepted by the acceptance unit from the plurality of pieces of correspondence information; The bearing information presenting device according to claim 1 , wherein the presenting unit presents at least the identification information and the measurement value included in the corresponding information when presenting the extracted corresponding information.

3. the receiving unit receives, as the extraction condition, a numerical condition for the accuracy item of the bearing; The bearing information presentation device according to claim 1 , wherein the extracting unit extracts the correspondence information including the measurement value corresponding to the numerical condition accepted by the accepting unit from among the plurality of pieces of correspondence information.

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