Detection tool and detection method for lathe bed

Abstract

The invention discloses a detection tool for a lathe bed and a detection method, solves the problems of low efficiency and low detection precision of a detection method for the levelness of the lathe bed and the parallelism of a guide rail in the prior art, and has the beneficial effects of improving the detection efficiency and ensuring the detection accuracy. The supporting bodies are detachably connected with the sliding seats, the sides, away from the sliding seats, of the supporting bodies and the sides, connected with the sliding seats, of the supporting bodies are finish machining faces, the number of the sliding seats corresponds to the number of guide rail installation bottom faces on the lathe bed in a one-to-one mode, and the distance between the sliding seats is larger than the distance between guide rail leaning tables on the lathe bed. A notch is formed in the side, away from the supporting body, of the sliding base so that the sliding base can form a step face, the sliding base is matched with the guide rail leaning table through the notch, the side, away from the supporting body, of the sliding base can make contact with the guide rail installation bottom face, an open hole is formed in the notch of the sliding base, and the cylindrical piece is installed in the open hole so that line-face contact can be formed when the cylindrical piece makes contact with the guide rail leaning table.

Description

Technical Field

[0001] The present invention relates to the technical field of machine tools, and in particular to a detection tooling and a detection method for a machine tool bed. Background Art

[0002] The statements in this part only provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] With the development and maturity of laser technology, laser cutting machines have been widely used in various industries. The bed is an important basic component of a machine tool, and many components are directly or indirectly installed on the bed. Therefore, the accuracy of the bed itself and various assembly references (such as installing guide rails and racks later) are crucial for a laser cutting machine tool. The bed of a laser cutting machine is generally manufactured by methods such as steel plate welding, profile welding, and gravity casting. After the main body of the bed is manufactured, a series of operations such as heat treatment - vibration aging - rough machining - vibration aging (removing machining stress) - finish machining are required to meet the machining accuracy requirements.

[0004] Theoretically, after heat treatment and vibration aging treatment, the corresponding welding stress (or casting stress) and machining stress should be removed from the bed. However, it is found in actual production that there is still a small amount of the above internal stress remaining, which affects the final machining accuracy; non-standard clamping and fixing during the machining process of the bed will also cause warping and deformation of the bed after machining.

[0005] Therefore, the first step after the bed arrives at the factory is for quality inspection personnel to inspect the machining accuracy of the bed. Only after confirming that the machining accuracy of the bed is qualified can it be warehoused. The key inspection items during the inspection process include the bed level, the flatness, straightness of the guide rail installation reference surface, and the parallelism between the two guide rails. The bed level is closely related to the flatness of the guide rail installation reference surface. These two are the first step in bed inspection and the basis for other inspection items because the straightness and parallelism of the guide rail installation position must be carried out under the condition of the bed being level.

[0006] The main inspection methods for the bed level in the industry are as follows: The first one: As shown in Figure 1 and Figure 2 , when the bed is designed, a finish-machined surface is provided at the structure. After the bed arrives at the assembly workshop, the fitter installs the anchor bolts and then places the level on the finish-machined surface to adjust the level. In this way, without adding additional tooling, only by adjusting the level of the machined surface at the structure can it be determined that the entire bed is in a level state. This method is applicable to the bed structure that has been precisely calculated in terms of structural design and data analysis. However, for most beds, due to the ineffective monitoring of the manufacturing process, even if a machined surface is made, it is difficult to accurately feedback the level of the entire bed.

[0007] The second one: As shown in Figure 3and Figure 4 As shown in Figure 4 , first install the guide rail on the bed body, then place the straightedge on the guide rail slider and move it back and forth for adjustment. When adjusting, slightly tighten the guide rail and then place the precision marble straightedge or cast iron straightedge directly above the slider. Then place the level on the straightedge and push it back and forth to observe the bubble of the level, and adjust the bed body feet in a timely manner. After the bed body is leveled, loosen all the originally locked guide rail screws. There are the following problems with this method: First, because the bed body is not in a horizontal state at the beginning, after the horizontal adjustment, the flatness of the bed body changes, which will cause tensile or compressive internal stresses on the guide rail and affect the accuracy of the guide rail. Second, the normal production method is "incoming materials - quality inspection - warehousing - production workshop - outbound - assembly". Quality inspection personnel cannot retrieve the corresponding guide rail of the bed body from the warehouse, and the guide rail needs to be disassembled every time for inspection, resulting in low efficiency. Third, this method is not applicable to the assembly in the production workshop. When adjusting, the bed body is not in a horizontal state, and there may be some elastic deformation due to the strength problem of the bed body at the beginning of adjustment. If the adjustment is carried out after installing the guide rail, it may have a serious impact on the guide rail.

[0008] In summary, the existing bed body horizontal inspection methods have problems such as poor inspection effect, low inspection efficiency, and being prone to affecting the guide rail. After the flatness of the bed body horizontal and the guide rail installation reference surface is qualified for inspection, it is also necessary to inspect the straightness, that is, the parallelism between the guide rail installation surface and the rack installation surface and the parallelism between the two guide rails. The existing straightness detection methods have the problem of being inconvenient. Currently, there is no suitable method for detecting the parallelism of the guide rails. The conventional operation is to take readings and record videos on the supplier's gantry machine tool (using the gantry machining center as the reference) and transfer them to the company's quality inspection department by email. However, this method is not intuitive. During the transportation process, improper force or other external force pressure may still cause deformation, resulting in low detection accuracy. Summary of the Invention

[0009] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a detection tooling for the bed body to improve the detection efficiency and detection accuracy.

[0010] To achieve the above purpose, the present invention is realized through the following technical solutions:

[0011] A detection tooling for a bed body, comprising a support body, the support body is detachably connected to a slide seat. Both the side of the support body away from the slide seat and the side where the support body is connected to the slide seat are finish-machined surfaces. The number of slide seats corresponds one-to-one with the number of guide rail installation bottom surfaces at the bed body. The distance between the slide seats is greater than the distance between the guide rail abutments at the bed body. A notch is provided on the side of the slide seat away from the support body so that the slide seat forms a stepped surface. The slide seat cooperates with the guide rail abutment through the notch. The side of the slide seat away from the support body can contact the guide rail installation bottom surface. An opening is provided along the height direction of the slide seat, and one side of the opening is arranged along the stepped surface of the slide seat. A component is installed in the opening so that when the component contacts the guide rail abutment, a line-to-plane or point-to-plane contact is formed.

[0012] A detection tooling for a bed body as described above further comprises a spirit level, and the spirit level can be placed on the side of the support body away from the slide seat to realize the detection of the levelness of the bed body.

[0013] A detection tooling for a bed body as described above further comprises a dial indicator. The dial indicator cooperates with the detection tooling for the bed body to realize the detection of the parallelism of the guide rail installation bottom surfaces on both sides of the bed body, that is, to realize the detection of the parallelism of the bed body guide rails. By cooperating the dial indicator with the slide seat, the parallelism between the guide rail installation bottom surface and the rack installation surface, that is, the straightness of the guide rail, can be detected.

[0014] A detection tooling for a bed body as described above, the slide seat comprises a first slide seat and a second slide seat. The maximum distance between the first slide seat and the second slide seat is less than the length of the support body. The lengths of the first slide seat and the second slide seat are greater than the width of the support body. A plurality of first connection holes are provided on one side of the bottom surface of the support body to realize the adjustment of the distance between the first slide seat and the second slide seat.

[0015] A detection tooling for a bed body as described above, the opening is arranged at the stepped surface of the slide seat. Half of the opening is a semi-cylindrical hole or a hemispherical hole. The component is a cylindrical part or a ball. The cylindrical part or the ball is clamped into the opening, and one side of the cylindrical part or the ball protrudes beyond the stepped surface.

[0016] When a cylindrical part is arranged in the opening, a threaded hole is arranged on the side part of the slide seat, and a first fastener passes through the threaded hole and is connected to the cylindrical part.

[0017] A detection tooling for a bed body as described above, one end of the cylindrical part protrudes from the end of the slide seat away from the support body. The end of the slide seat away from the support body is a scraping surface, and a plurality of pits are provided on the scraping surface to facilitate the movement of the slide seat relative to the guide rail installation bottom surface.

[0018] The slide seat is provided with at least one second connection hole for connecting with the support body. The slide seat is provided with at least two of the openings, and the openings are arranged close to the side edge of the slide seat.

[0019] A detection tooling for a bed body as described above, wherein the support body is a square cylinder;

[0020] The sliding seat is a portal sliding seat, that is, a concave portion is provided on one side of the sliding seat away from the support body, the width of the concave opening of the sliding seat is smaller than the width of the guide rail abutment, and at least one of the openings described above is provided on one side of the concave portion of the sliding seat.

[0021] In a second aspect, the present invention also provides a method for detecting the levelness of a bed body, using the detection tooling for a bed body as described above, including the following content:

[0022] A cylindrical part or a ball is arranged at the sliding seat, and the cylindrical part or the ball protrudes from the step surface of the sliding seat;

[0023] Sliding seats are respectively installed on both sides of the lower surface of the support body, and the distance between the sliding seats is greater than the distance between the first guide rail abutment and the second guide rail abutment;

[0024] One side of the sliding seat away from the support body is respectively in contact with the corresponding guide rail installation bottom surface, and at least one cylindrical pin or ball in each sliding seat is in contact with the corresponding guide rail abutment;

[0025] A level is placed on the surface of the support body away from the sliding seat, and the detection tooling for the bed body is pushed along the guide rail installation bottom surface, and the change of the level is observed during the pushing process;

[0026] If the level does not change, it means that the bed body is in a horizontal state. If the level changes, adjust the anchor bolts of the bed body. After the adjustment is completed, repeat the above steps until the level does not change during the pushing process of the detection tooling for the bed body.

[0027] In a third aspect, the present invention also provides a method for detecting the parallelism of the bed body guide rails, using the detection tooling for a bed body as described above, including the following content:

[0028] A cylindrical part or a ball is arranged at the sliding seat, and the cylindrical part or the ball protrudes from the step surface of the sliding seat;

[0029] Sliding seats are respectively installed on both sides of the lower surface of the support body, and the distance between the sliding seats is greater than the distance between the first guide rail abutment and the second guide rail abutment;

[0030] One side of the sliding seat away from the support body is respectively in contact with the corresponding guide rail installation bottom surface, the cylindrical pins or balls of the sliding seats on the main guide rail side are all in contact with the corresponding guide rail abutments, and a free state is formed between the cylindrical pin of the sliding seat on the secondary guide rail side and the corresponding guide rail abutment;

[0031] The base of the dial indicator is adsorbed at the sliding seat on the main guide rail side, the pointer of the dial indicator is placed on the guide rail abutment on the secondary guide rail side, the detection tooling for the bed body is pushed along the guide rail installation bottom surface, and the data of the dial indicator is recorded. The difference between the maximum value and the minimum value of the pointer is the parallelism error of the two sides of the guide rail installation bottom surface, that is, the parallelism error of the two sides of the guide rail.

[0032] In a fourth aspect, the present invention also provides a method for detecting the parallelism between the guide rail installation reference surface and the rack installation reference surface. Using the detection tooling for the bed body described above, the method includes the following steps:

[0033] A cylindrical part or a ball is arranged at the slide seat, and the cylindrical part or the ball protrudes from the step surface of the slide seat;

[0034] Only using the slide seat, place the slide seat on the guide rail installation bottom surface of the main guide rail or the secondary guide rail. The side of the slide seat away from the support body is in contact with the corresponding side of the guide rail installation bottom surface respectively, and each cylindrical pin or ball of the slide seat is in contact with the corresponding guide rail abutment;

[0035] Adsorb the base of the dial indicator on the slide seat, and place the pointer of the dial indicator on the rack installation abutment;

[0036] Move the slide seat and record the data of the dial indicator. The difference between the maximum value and the minimum value of the pointer is the parallelism error between the guide rail abutment and the rack abutment, that is, the parallelism error between the guide rail installation reference surface and the rack installation reference surface, which is also the straightness error of the guide rail abutment relative to the rack abutment.

[0037] The beneficial effects of the present invention are as follows:

[0038] 1) In the detection tooling for the bed body of the present invention, the support body and the slide seat are detachably connected. The slide seat can be used alone or in combination with the support body. The setting of the support body is beneficial to jointly push the slide seats on both sides. Both sides of the support body are precision-machined surfaces to ensure the accuracy of the bed body level detection. The slide seat is provided with a notch, so that the slide seat can cooperate with the guide rail abutment through the notch, making the bottom of the slide seat in contact with the guide rail installation bottom surface. The slide seat can move along the guide rail abutment. A cylindrical part or a ball is arranged in the slide seat. When the slide seat cooperates with the guide rail abutment, a line-and-plane or point-and-plane contact is formed between the component and the guide rail abutment, reducing the contact area and facilitating the movement of the slide seat, and the measurement accuracy will not be affected by the small oil stains, dust, impurities, etc. on the surface of the bed body.

[0039] 2) In the present invention, the detection tooling is used in combination with a level gauge to enable the detection of the bed body level, that is, to realize the flatness inspection of the guide rail installation reference surface (guide rail installation bottom surface). The dial indicator and the detection tooling are used in combination to enable the detection of the parallelism between the guide rail installation bottom surfaces on both sides of the bed body. The dial indicator and the slide seat used alone can realize the detection of the parallelism between the guide rail installation bottom surface and the rack installation surface, that is, the detection of the guide rail straightness, meeting the detection requirements in multiple aspects of the bed body, facilitating the quality inspection personnel to conduct incoming material inspection, distinguishing qualified and unqualified bed bodies, preventing unqualified products from flowing into the next process, and correspondingly facilitating the assembly personnel to quickly adjust the bed body level during the assembly of the machine tool, improving the production efficiency.

[0040] 3) In the present invention, the slide structure is reasonably arranged. The contact surface between the slide and the installation bottom surface of the guide rail is a scraping surface, which can reduce the contact area with the installation bottom surface of the guide rail. The scraping surface is provided with pits, and the pits can store lubricating oil to make the detection tooling move more smoothly on the installation bottom surface of the guide rail.

[0041] 4) In the present invention, the slide is reasonably arranged. The slide is a portal slide, and at least one cylindrical pin or ball is respectively provided on both sides of the slide, so as to ensure reliable contact between the slide and the guide rail abutment. Description of the Drawings

[0042] The attached drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0043] Figure 1 It is a schematic diagram of machining a finish surface on the bed body as a reference surface in the prior art.

[0044] Figure 2 It is a schematic diagram of setting a spirit level on the bed body to detect the levelness of the bed body in the prior art.

[0045] Figure 3 It is a schematic diagram of installing a slider at the guide rail of the bed body in the prior art.

[0046] Figure 4 It is a schematic diagram of a method for detecting the parallelism of the bed body guide rail in the prior art.

[0047] Figure 5 It is a schematic diagram of a detection tooling for a bed body according to one or more embodiments of the present invention.

[0048] Figure 6 It is a schematic diagram of a support body in a detection tooling for a bed body according to one or more embodiments of the present invention.

[0049] Figure 7 It is a schematic diagram of the second slide of a detection tooling for a bed body according to one or more embodiments of the present invention Figure 1 。

[0050] Figure 8 It is a schematic diagram of the second slide of a detection tooling for a bed body according to one or more embodiments of the present invention Figure 2 。

[0051] Figure 9 It is a bottom view of the second slide of a detection tooling for a bed body according to one or more embodiments of the present invention.

[0052] Figure 10It is a schematic diagram of a cylindrical pin and a set screw installed on the third slide block in a detection tooling for a bed body according to one or more embodiments of the present invention.

[0053] Figure 11 It is a schematic diagram of a cylindrical pin of a detection tooling for a bed body according to one or more embodiments of the present invention.

[0054] Figure 12 It is a schematic diagram of a set screw in a detection tooling for a bed body according to one or more embodiments of the present invention.

[0055] Figure 13 It is a schematic diagram of an internal hexagonal socket head screw provided on the slide block in a detection tooling for a bed body according to one or more embodiments of the present invention.

[0056] Figure 14 It is a schematic diagram of a third connecting hole provided on the slide block in a detection tooling for a bed body according to one or more embodiments of the present invention.

[0057] Figure 15 It is a schematic diagram of the cooperation between the slide block and the guide rail abutment in a detection tooling for a bed body according to one or more embodiments of the present invention.

[0058] Figure 16 It is a side view of the cooperation between the slide block and the guide rail abutment in a detection tooling for a bed body according to one or more embodiments of the present invention.

[0059] Figure 17 It is an enlarged view of the cooperation between the cylindrical pin in the slide block and the guide rail abutment in a detection tooling for a bed body according to one or more embodiments of the present invention.

[0060] Figure 18 It is a position relationship diagram of two cylindrical pins in the slide block in a detection tooling for a bed body according to one or more embodiments of the present invention.

[0061] Figure 19 It is a schematic diagram of the slide block calibrated by a flat plate in a detection tooling for a bed body according to one or more embodiments of the present invention.

[0062] Figure 20 It is a front view of the bed body.

[0063] Figure 21 It is an isometric side view of the bed body.

[0064] Figure 22 It is a partial enlarged schematic diagram of the bed body.

[0065] Figure 23 It is a schematic diagram of the anchor bolt at the bed body.

[0066] Figure 24Partial enlargement of the mating part between the inspection tooling for the bed body and the installation bottom surface of the bed body guide rail according to one or more embodiments of the present invention Figure 1 .

[0067] Figure 25 Partial enlargement of the mating part between the inspection tooling for the bed body and the installation bottom surface of the bed body guide rail according to one or more embodiments of the present invention Figure 2 .

[0068] Figure 26 Schematic diagram of the inspection tooling for the bed body mating with the installation bottom surface of the bed body guide rail to perform the bed body levelness inspection according to one or more embodiments of the present invention.

[0069] Figure 27 Side view of the inspection tooling for the bed body mating with the installation bottom surface of the bed body guide rail to perform the bed body levelness inspection according to one or more embodiments of the present invention.

[0070] Figure 28 Top view of the inspection tooling for the bed body mating with the installation bottom surface of the bed body guide rail to perform the guide rail parallelism inspection according to one or more embodiments of the present invention.

[0071] Figure 29 Partial enlarged view of the inspection tooling for the bed body mating with the installation bottom surface of the bed body guide rail to perform the guide rail parallelism inspection according to one or more embodiments of the present invention.

[0072] Figure 30 Schematic diagram of the bed body correction when the inspection tooling for the bed body mates with the installation bottom surface of the bed body guide rail to perform the guide rail parallelism inspection according to one or more embodiments of the present invention.

[0073] Figure 31 Schematic diagram of the inspection tooling for the bed body mating with the installation bottom surface of the bed body guide rail to perform the parallelism inspection between the guide rail installation bottom surface and the rack installation surface according to one or more embodiments of the present invention.

[0074] In the figure: The distances or dimensions between each part are exaggerated for showing the positions of each part, and the schematic diagram is only for illustration.

[0075] Wherein: 1. Support body, 1-1. First connection hole, 2. First sliding seat, 2-1. Second connection hole, 2-2. Opening, 2-3. Threaded hole, 2-4. Scraped surface, 2-5. Notch, 2-6. Recess, 3. Second sliding seat, 4. Cylindrical pin, 5. Set screw, 6. Socket head cap screw, 7. Third connection hole, 8. Flat plate, 9. Bed body, 10. First guide rail installation bottom surface, 11. First guide rail abutment, 12. Second guide rail installation bottom surface, 13. Second guide rail abutment, 14. Anchor bolt, 15. Nut, 16. Level, 17. Dial indicator, 18. Oilstone, 19. Rack installation abutment, 20. Rack installation bottom surface. Detailed implementation manners

[0076] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanations of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs.

[0077] It should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the present invention clearly states otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof;

[0078] As introduced in the background art, in the prior art, the detection methods for the levelness of the bed body and the parallelism of the guide rails have the problems of low efficiency and low inspection accuracy. To solve the above technical problems, the present invention proposes a detection tooling for the bed body.

[0079] Embodiment 1

[0080] In a typical implementation manner of the present invention, referring to Figure 5 、 Figure 9 and Figure 15 shown, a detection tooling for the bed body includes a support body 1. The support body 1 is detachably connected to the sliding seat. Both the side of the support body 1 away from the sliding seat and the side where the support body is connected to the sliding seat are finish-machined surfaces. The number of sliding seats corresponds one-to-one to the number of guide rail installation bottom surfaces at the bed body. The distance between the sliding seats is greater than the distance between the guide rail abutments at the bed body 9. The side of the sliding seat away from the support body is provided with a notch 2-5 so that the sliding seat forms a stepped surface. The sliding seat cooperates with the guide rail abutment through the notch 2-5. The side of the sliding seat away from the support body can be in contact with the guide rail installation bottom surface. The sliding seat is provided with an opening along its height direction. One side of the opening is arranged along the stepped surface of the sliding seat. Components are installed in the opening so that when the components are in contact with the guide rail abutment, a line-and-plane or point-and-plane contact is formed.

[0081] It should be noted that the inspection tooling further includes a spirit level, which can be placed on the side of the support away from the sliding seat to detect the levelness of the bed body.

[0082] In addition, the inspection tooling further includes a dial indicator. The dial indicator cooperates with the inspection tooling for the bed body to detect the parallelism of the installation bottom surfaces of the guide rails on both sides of the bed body, that is, to detect the parallelism of the bed body guide rails. By cooperating the dial indicator with the sliding seat, the parallelism of the guide rail installation bottom surface and the rack installation surface, that is, the straightness of the guide rail, can be detected.

[0083] It is easily understandable that the sliding seat includes a first sliding seat 2 and a second sliding seat 3. The maximum distance between the first sliding seat 2 and the second sliding seat 2 is less than the length of the support body. The lengths of the first sliding seat 2 and the second sliding seat 3 are greater than the width of the support body. A plurality of first connection holes 1-1 are provided on one side of the bottom surface of the support body 1 to adjust the distance between the first sliding seat 2 and the second sliding seat 3. The two sliding seats are at the same height and are fixed and processed on a surface grinder simultaneously during production.

[0084] In this embodiment, referring to Figure 6 As shown, the structure of the support body 1 is specifically a square tube. The square tube has a set length. The function of the square tube itself is to measure straightness, parallelism, perpendicularity, and scribing, etc. The square tube can be used in cooperation with the sliding seat or used alone. When used alone, the square tube is used as a horizontal tooling. The longitudinal section of the support body 1 can be square. The material of the support body 1 can be selected as magnesium-aluminum material, and the accuracy grade of the magnesium-aluminum material is grade 1. In some examples, the overall dimensions of the support body 1 are 2000mm x 250mm x 200mm, and the total weight is greater than 35kg.

[0085] It is easily understandable that a plurality of pairs of first connection holes 1-1 are respectively provided on both sides of the bottom of the square tube. The installation position of the sliding seat can be adjusted through different first connection holes, and it can be adjusted to a suitable distance according to the different spans of the guide rail installation bottom surface to be applicable to various bed bodies.

[0086] Referring to Figure 7 、 Figure 8 As shown, second connection holes 2-1 are provided in the height direction of the sliding seat for connection with the support body. The second connection holes 2-1 are aligned with the first connection holes 1-1. Referring to Figure 13 As shown, and they are connected by second fasteners such as socket head cap screws 6;

[0087] Specifically, the opening 2-2 of the sliding seat is a cylindrical pin hole, which can penetrate the height direction of the sliding seat. Part of the cylindrical pin hole is located at the step surface of the sliding seat, so that one section of the opening is an open hole. The component is a cylindrical pin. Referring to Figure 10As shown, the cylindrical pin 4 is inserted into the sliding seat from the side of the sliding seat away from the support body 1. The side surface of the cylindrical pin 4 can contact the guide rail installation bottom surface to form a line-to-surface contact. The end of the cylindrical pin 4 is lower than the bottom surface of the sliding seat, 0.3 mm - 0.5 mm lower than the bottom surface of the sliding seat, to prevent the cylindrical pin from directly contacting the guide rail installation bottom surface. The cylindrical pin is provided with a fastening hole, and 2 - 3 threaded holes are arranged in the transverse direction of the sliding seat. Refer to Figure 12 As shown, a first fastener such as a fastening screw 5 is inserted into the side of the sliding seat for firm connection with the cylindrical pin 4.

[0088] Refer to Figure 11 As shown, internal threads are provided inside the cylindrical pin 4, which facilitates the cooperation of a tool with the internal threads to realize the removal of the cylindrical pin 4 relative to the sliding seat and achieve the rapid replacement of the cylindrical pin 4.

[0089] It can be understood that the cylindrical pin has a low price, is convenient to obtain materials, and can be replaced at any time after wear. The cylindrical pin can also be replaced by a 40Cr (chromium) bar after precision machining. After 40Cr is processed, it has a very high hardness and is very wear-resistant after surface heat treatment. However, due to the small batch size and high price, the cylindrical structure is used to form a line-to-surface contact with the bed body guide rail abutment, reducing the contact area, facilitating the overall sliding along the guide rail installation bottom surface, and will not affect the measurement accuracy due to small amounts of oil stains, dust, impurities, etc. on the bed body surface.

[0090] In addition, refer to Figure 14 As shown, a third connection hole 7 is also provided at the concave part 2 - 6 of the sliding seat. A third fastener such as a bolt can pass through the third connection hole to further realize the stable connection between the sliding seat and the support body 1.

[0091] In other examples, the cylindrical pin 4 can be replaced by steel balls, and a point-to-surface contact is formed between the steel balls and the guide rail abutment, further reducing the moving resistance.

[0092] It is easily understandable that the sliding seat has a set length and width. The length of the sliding seat is greater than the width of the support body 1, and the sliding seat is perpendicular to the support body 1.

[0093] In this embodiment, the sliding seat is a portal sliding seat, that is, a concave part 2 - 6 is provided in the middle of the side of the sliding seat away from the support body 1 to reduce the contact area between the sliding seat and the guide rail installation bottom surface. One or two openings are provided in one side of the concave part of the sliding seat. The second connection holes 2 - 1 of the openings 2 - 2 are arranged at intervals. The distance between the second connection holes 2 - 1 and the concave part 2 - 6 is less than the distance between the openings 2 - 2 and the concave part 2 - 6. When there is one opening on one side of the concave part of the sliding seat, one or two openings can be provided at the other side. Detection is carried out through the cylindrical pins at two of the openings contacting the slide rail abutment.

[0094] Refer to Figure 8As shown, one side of the sliding seat away from the support body 1 contacts with the bottom surface of the guide rail installation. The surface of the sliding seat for contacting with the bottom surface of the guide rail installation is the scraping surface 2-4, and the scraping surface 2-4 is provided with pits to reduce the contact area with the bottom surface of the guide rail installation.

[0095] Specifically, the upper surface of the sliding seat is processed by a surface grinder, and the lower surface of the sliding seat is scraped by a scraper, which can reduce the contact area with the installation surface of the bottom surface of the guide rail, so that there are a plurality of pits on the lower surface of the sliding seat. The pits are densely distributed on the lower surface of the sliding seat. The pits can store lubricating oil to make the whole move more smoothly when moving on the installation surface of the bottom surface of the guide rail. The parallelism of the upper and lower surfaces of the sliding seat is ≤0.01 mm (which is sufficient for the horizontal adjustment of the laser cutting machine).

[0096] It should be noted that the material of the sliding seat is HT300 (pearlite type gray cast iron), and the weight is greater than 1.5 kg.

[0097] The detection tooling provided in this embodiment refers to Figure 16 and Figure 17 As shown, the bottom surface of the sliding seat contacts with the bottom surface of the guide rail installation, and the cylindrical part at the sliding seat contacts with the guide rail abutment. By cooperating with the use of a spirit level, the detection of the levelness of the bed body can be realized, that is, the flatness inspection of the guide rail installation reference surface (the bottom surface of the guide rail installation) can be realized. The combined use of a dial indicator and the detection tooling can realize the detection of the parallelism of the bottom surfaces of the guide rails on both sides of the bed body. The combined use of the dial indicator and the sliding seat alone can realize the detection of the parallelism between the bottom surface of the guide rail installation and the rack installation surface, that is, the detection of the straightness of the guide rail, realizing the detection requirements of multiple aspects of the bed body, facilitating the assembly personnel to quickly adjust the level of the bed body 9 during the assembly of the machine tool, improving the production efficiency. After the level of the bed body is adjusted, the influence of the gravity factor can be eliminated, avoiding affecting the positioning accuracy and repeat positioning accuracy during laser cutting.

[0098] In addition, the bottom surface of the sliding seat will wear during use and needs to be calibrated once every six months. When calibrating, use a flat plate 8, lubricating oil, red lead powder (red lead powder / blue lead powder is a display agent for detecting flatness, and the high points or low points of the bottom surface can be intuitively seen according to the coloring effect of the red lead powder on the flat plate), a height gauge micrometer and a scraper for correction. The specific method is as follows:

[0099] Use a paper cup to take a set amount of red lead powder, pour in an appropriate amount of lubricating oil, and fully mix the guide rail oil and the red lead powder;

[0100] Apply the mixed red lead powder to the bottom surface of the sliding seat;

[0101] Place the bottom surface of the sliding seat on the flat plate 8 and drag it back and forth to observe the coloring situation;

[0102] Use a scraper to remove the high points on the bottom surface of the sliding seat;

[0103] The correction is to correct the two sliding seats simultaneously to ensure that the first sliding seat 2 and the second sliding seat 3 are at the same height;

[0104] After the plane is corrected, use a height gauge and a micrometer to calibrate and confirm whether the two sliding seats are at the same height.

[0105] Embodiment 2

[0106] This embodiment discloses a method for detecting the level of the bed body. Refer to Figure 24 、 Figure 25 、 Figure 26 and Figure 27 As shown, a detection tool for the bed body described in Embodiment 1 is adopted, including the following content:

[0107] A cylindrical pin is arranged at the sliding seat, and the side surface of the cylindrical pin protrudes from the step surface of the sliding seat;

[0108] Sliding seats are respectively installed on both sides of the lower surface of the support body. The distance between the sliding seats is 1 mm - 4 mm larger than the distance between the first guide rail abutment and the second guide rail abutment, and it can be 2 mm;

[0109] The scraping surfaces of the first sliding seat and the second sliding seat are respectively in contact with the corresponding side guide rail installation bottom surfaces, and the sliding seat cylindrical pins are in contact with the guide rail abutments;

[0110] When the sliding seat is pushed forward or backward, the 4 cylindrical pins installed on the sliding seat (at least one cylindrical pin on each sliding seat is in contact with the guide rail abutment, will form a "line contact" with the first guide rail abutment or the second guide rail abutment to play a guiding role, and the contact area is small and will not increase additional resistance, and the whole can be easily pushed to move;

[0111] Place the level 16 on the upper surface of the support body. The two levels 16 (bubble levels) are placed in different states, one is placed horizontally and the other is placed vertically. Push the device forward and backward to observe the change of the bubble in the level;

[0112] If there is no change in the level 16, it means that the bed body is in a horizontal state. If there is a change in the level, then adjust the anchor bolts 14 of the bed body. Refer to Figure 23 As shown, adjust through the nut 15 at the anchor bolt 14. Refer to Figure 18 As shown, when making rough adjustment, the anchor bolts at 2 / 9 of the bed body feet can be stressed and the rest are suspended, and adjust to the appropriate range. When making fine adjustment, take each leg of the bed body as a reference and adjust one by one until the accuracy requirement is met. After the adjustment is completed, repeat the above steps until there is no change in the level during the process of pushing the detection tool for the bed body;

[0113] Among them, if it cannot be adjusted to the appropriate range, it is determined that the machining of the bed body is unqualified, which may be caused by stress deformation or improper stress during transportation;

[0114] It should be noted that before the installation of the device, refer to Figure 20 、 Figure 21 andFigure 22 As shown, the following work still needs to be done:

[0115] 1) Use an oilstone 18 to clean the installation reference surface of the bed guide rail (including the first guide rail installation bottom surface 10, the first guide rail abutment 11, the second guide rail installation bottom surface 12, and the second guide rail abutment 13) to remove burrs and flash, and use a rag to remove oil stains;

[0116] 2) Drop a small amount of lubricating oil on the surface to be detected, push the device back and forth so that the lubricating oil covers the entire guide rail installation bottom surface. The pits at the scraping surface at the bottom of the device can store lubricating oil, and the contact area is relatively small, so it is very easy to push and can be operated by one person.

[0117] Embodiment III

[0118] This embodiment provides a method for detecting the parallelism of the bed guide rail. Referring to Figure 28 、 Figure 29 and Figure 30 As shown, a detection tooling for the bed described in Embodiment I is adopted, including the following:

[0119] A cylindrical part or a ball is arranged at the slide base, and the cylindrical part or the ball protrudes from the step surface of the slide base;

[0120] Slide bases are respectively installed on both sides of the lower surface of the support body, and the distance between the slide bases is greater than the distance between the first guide rail abutment and the second guide rail abutment;

[0121] The sides of the slide bases away from the support body are respectively in contact with the corresponding guide rail installation bottom surfaces, the cylindrical pins or balls of the slide bases on the main guide rail side are all in contact with the corresponding guide rail abutments, and a free state is formed between the cylindrical pin of the slide base on the sub-guide rail side and the corresponding guide rail abutment;

[0122] The base of the dial indicator 17 is adsorbed at the slide base on the main guide rail side, the pointer of the dial indicator 17 is placed on the guide rail abutment on the sub-guide rail side, and the detection tooling for the bed is pushed along the guide rail installation bottom surface, and the data of the dial indicator is recorded. The difference between the maximum value and the minimum value of the pointer is the parallelism error of the two guide rail installation bottom surfaces, that is, the parallelism error of the two guide rails.

[0123] Embodiment IV

[0124] This embodiment provides a method for detecting the parallelism between the guide rail installation reference surface and the rack installation reference surface. Referring to Figure 31 As shown, a detection tooling for the bed described in Embodiment I is adopted, including the following:

[0125] A cylindrical part or a ball is arranged at the slide base, and the cylindrical part or the ball protrudes from the step surface of the slide base;

[0126] Only using the sliding seat, place the sliding seat at the guide rail installation bottom surface of the main guide rail or the auxiliary guide rail. The side of the sliding seat away from the support body is respectively in contact with the guide rail installation bottom surface on the corresponding side, and each cylindrical pin or ball of the sliding seat is in contact with the corresponding guide rail abutment;

[0127] Adsorb the base of the dial indicator on the sliding seat, and place the pointer of the dial indicator on the rack installation abutment 19. The inner side of the rack installation abutment 19 is the rack installation bottom surface 20;

[0128] Move the sliding seat and record the data of the dial indicator. The difference between the maximum value and the minimum value of the pointer is the parallelism error between the guide rail installation bottom surface (guide rail installation reference surface) and the rack installation surface (rack installation reference surface), that is, the straightness error of the guide rail abutment relative to the rack abutment, so as to realize the detection of the straightness of the guide rail.

[0129] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A detection tooling for a bed body, characterized in that, It includes a support body, which is detachably connected to the slide base. Both the side of the support body away from the slide base and the side where the support body is connected to the slide base are finish-machined surfaces. The number of slide bases corresponds one-to-one with the number of the guide rail installation bottoms at the bed body. The distance between the slide bases is greater than the distance between the guide rail abutments at the bed body. A notch is provided on the side of the slide base away from the support body so that the slide base forms a stepped surface. The slide base cooperates with the guide rail abutment through the notch. The side of the slide base away from the support body can be in contact with the guide rail installation bottom. An opening is provided along the height direction of the slide base, and one side of the opening is arranged along the stepped surface of the slide base. A component is installed in the opening so that when the component is in contact with the guide rail abutment, a line-to-surface or point-to-surface contact is formed.

2. The inspection tooling for a bed body according to claim 1, wherein, It further includes a spirit level, which can be placed on the side of the support body away from the slide base to detect the levelness of the bed body.

3. The inspection tooling for a lathe bed according to claim 1, characterized in that, It further includes a dial indicator, which cooperates with the detection tooling for the bed body to detect the parallelism of the guide rail installation bottoms on both sides of the bed body, that is, to detect the parallelism of the bed body guide rails. By cooperating the dial indicator with the slide base, the parallelism between the guide rail installation bottom and the rack installation surface, that is, the straightness of the guide rail, can be detected.

4. The inspection tooling for a machine tool bed according to claim 1, wherein, The slide base includes a first slide base and a second slide base. The maximum distance between the first slide base and the second slide base is less than the length of the support body. The lengths of the first slide base and the second slide base are greater than the width of the support body. Multiple first connection holes are provided on one side of the bottom surface of the support body to adjust the distance between the first slide base and the second slide base.

5. The inspection tooling for a bed body according to claim 1, characterized in that, Half of the opening is a semi-cylindrical hole or a hemispherical hole, and the component is a cylindrical part or a ball. The cylindrical part or the ball is snapped into the opening, and one side of the cylindrical part or the ball protrudes beyond the stepped surface. When a cylindrical part is arranged in the opening, a threaded hole is provided on the side part of the slide base, and a first fastener passes through the threaded hole and is connected to the cylindrical part.

6. The inspection tooling for a bed body according to claim 1, characterized in that, One end of the cylindrical part protrudes from the end of the slide base away from the support body. The end of the slide base away from the support body is a scraping surface, and multiple pits are provided on the scraping surface to facilitate the movement of the slide base relative to the guide rail installation bottom. The slide base is provided with at least one second connection hole for connecting to the support body, and the slide base is provided with at least two such openings, which are arranged near the side of the slide base.

7. The inspection tooling for a bed body according to claim 1, characterized in that, The support body is a square tube. The slide base is a portal slide base, that is, a recess is provided on the side of the slide base away from the support body. The width of the notch of the slide base is less than the width of the guide rail abutment, and at least one of the openings is provided on one side of the recess of the slide base.

8. Method for detecting the levelness of the bed, characterized in that, Adopt a bed body detection tooling according to claim 2, including the following contents: Arrange a cylindrical part or a ball at the slide base, and the cylindrical part or the ball protrudes beyond the stepped surface of the slide base. Install slide bases on both sides of the lower surface of the support body respectively, and the distance between the slide bases is greater than the distance between the first guide rail abutment and the second guide rail abutment. The sides of the slide bases away from the support body are respectively in contact with the corresponding guide rail installation bottoms on the corresponding sides, and at least one cylindrical pin or ball in each slide base is in contact with the corresponding guide rail abutment. Place a spirit level on the surface of the support body away from the slide base, and push the bed body detection tooling along the guide rail installation bottom. Observe the change of the spirit level during the pushing process. If the level does not change, it indicates that the bed body is in a horizontal state. If the level changes, adjust the anchor bolts of the bed body. After the adjustment is completed, repeat the above steps until the level does not change during the process of pushing the bed body with the inspection tooling.

9. A method for detecting the parallelism of the bed guide rails, characterized in that, An inspection tooling for a bed body as described in claim 3 includes the following: A cylindrical part or a ball is provided at the sliding seat, and the cylindrical part or the ball protrudes from the step surface of the sliding seat. Sliding seats are respectively installed on both sides of the lower surface of the support body, and the distance between the sliding seats is greater than the distance between the first guide rail abutment and the second guide rail abutment. The sides of the sliding seats away from the support body are respectively in contact with the corresponding guide rail installation bottom surfaces. The cylindrical pins or balls of the sliding seats on the main guide rail side are all in contact with the corresponding guide rail abutments, and a free state is formed between the cylindrical pin of the sliding seat on the sub-guide rail side and the corresponding guide rail abutment. The base of the dial indicator is adsorbed at the sliding seat on the main guide rail side, and the pointer of the dial indicator is placed on the guide rail abutment on the sub-guide rail side. Push the inspection tooling for the bed body along the guide rail installation bottom surface, record the data of the dial indicator, and the difference between the maximum value and the minimum value of the pointer is the parallelism error of the two guide rail installation bottom surfaces, that is, the parallelism error of the two guide rails.

10. A method for detecting the parallelism between the guide rail installation reference surface and the rack installation reference surface, characterized in that, An inspection tooling for a bed body as described in claim 3 includes the following: A cylindrical part or a ball is provided at the sliding seat, and the cylindrical part or the ball protrudes from the step surface of the sliding seat. Only use the sliding seat, place the sliding seat on the guide rail installation bottom surface of the main guide rail or the sub-guide rail. The sides of the sliding seats away from the support body are respectively in contact with the corresponding guide rail installation bottom surfaces, and all the cylindrical pins or balls of the sliding seats are in contact with the corresponding guide rail abutments. Adsorb the base of the dial indicator at the sliding seat, and place the pointer of the dial indicator on the rack installation abutment. Move the sliding seat, record the data of the dial indicator, and the difference between the maximum value and the minimum value of the pointer is the parallelism error between the guide rail abutment and the rack abutment, that is, the parallelism error between the guide rail installation reference surface and the rack installation reference surface, that is, the straightness error of the guide rail abutment relative to the rack abutment.

Images