A machine tool protective cover plate connection structure

Abstract

The utility model provides a machine tool protective cover plate connection structure, which belongs to the technical field of processing equipment. It solves the problems of inconvenient disassembly and assembly of the existing protective cover plate connection structure when reducing costs. The machine tool protective cover plate connection structure includes bolts, a U-shaped trough body and a U-shaped sheet metal part. The U-shaped sheet metal part is embedded in the U-shaped trough body, and a connecting nut is fixed on the U-shaped trough body. A mounting hole is provided on the protective cover plate. A support plate is fixed in the groove cavity of the U-shaped sheet metal part. The end of the support plate is bent to form a supporting foot, and the supporting foot is fixed to the bottom wall of the U-shaped sheet metal part. A through hole corresponding to the mounting hole is provided on the support plate. The rod of the bolt is inserted into the through hole and the connecting nut and forms a threaded connection with the connecting nut. The head of the bolt rests on the support plate and is inserted into the mounting hole. The connection structure of the machine tool protective cover plate can make the protective cover plate stably installed on the machine tool housing, and can make the protective cover plate easy to disassemble and assemble on the machine tool housing while reducing costs.

Description

Technical Field

[0001] The utility model belongs to the technical field of processing equipment and relates to a machine tool protective cover plate connection structure. Background Art

[0002] CNC machine tools are key equipment in the modern equipment manufacturing industry, and high speed, compounding and intelligence are their main development directions. Machine tool protective covers are essential key functional components of CNC machine tools. They not only have basic functions such as safety protection, precision maintenance, environmental protection, moisture and humidity insulation, and sound insulation and noise reduction, but also have the deep functions of improving the appearance quality of machine tools, enhancing the aesthetic experience of machine tools, and enhancing the corporate brand image.

[0003] In order to facilitate the disassembly, installation and maintenance of the parts inside the machine tool, the protective cover includes a machine tool shell and a detachable protective cover. Usually, a number of windows are set around the machine tool shell, and the protective cover is detachably fixed to the window. In order to waterproof the window, a waterproof structure is set between the protective cover and the machine tool shell. For example, a machine tool external protective waterproof structure disclosed in a Chinese patent document [Announcement No.: CN204471093U] includes a machine tool shell and a protective cover that cooperates with the machine tool shell. A U-shaped groove is fixed on the upper side, left side and right side of the machine tool shell window. After the protective cover cooperates with the machine tool shell, the upper side, left side and right side flanges of the cover fall into the U-shaped groove and cooperate with the U-shaped groove.

[0004] The protective cover is usually connected to the machine tool housing by bolts. Currently, there are two main connection structures for the protective cover. The first is the stud processing connection structure, such as Figure 1 As shown, the protective cover plate 3 is installed vertically, the connecting nut 2 is located in the machine tool housing 1 and fixed on the bottom wall of the U-shaped trough 1a of the machine tool housing 1, and vertically arranged U-shaped sheet metal parts 4 are fixed on the left and right edges of the protective cover plate 3. The U-shaped sheet metal parts 4 are embedded in the U-shaped trough 1a, and the stud processing part 9 is fixed between the protective cover plate 3 and the U-shaped sheet metal part 4. The bolt 5 is passed through the stud processing part 9, the bottom wall of the U-shaped trough 1a and the connecting nut 2 and is threadedly connected with the connecting nut 2. Tighten the bolt 5 to fix the protective cover plate 3 on the machine tool housing 1. The second type is a large and small hole sheet metal connection structure, such as Figure 2 As shown, the protective cover 3 is installed vertically, the connecting nut 2 is located in the machine tool housing 1 and fixed on the bottom wall of the U-shaped groove 1a of the machine tool housing 1, and vertically arranged U-shaped sheet metal parts 4 are fixed at the left and right edges of the protective cover 3. A small hole 4b is opened on the bottom wall of the U-shaped sheet metal part 4, and a large hole 3b corresponding to the small hole 4b is arranged on the protective cover 3. The bolt 5 passes through the large hole 3b of the protective cover 3 and is then passed through the small hole 4b of the U-shaped sheet metal part 4, the bottom wall of the U-shaped groove 1b of the machine tool housing 1 and the connecting nut 2, and forms a threaded connection with the connecting nut 2. Tighten the bolt 5 to fix the protective cover 3 on the machine tool housing 1.

[0005] In the first connection structure, the stud processing part 9 needs to be processed on a lathe, and the manufacturing cost is relatively high. In the second connection structure, although the cost can be reduced by not setting the stud processing part 9, the length of the bolt 5 is relatively short, and the protective cover plate 3 is installed vertically, that is, the U-shaped sheet metal part 4 is in a vertical setting state. After the bolt 5 passes through the large hole 3b of the protective cover plate 3 and does not form a threaded connection with the connecting nut 2, the bolt 5 is suspended in the groove cavity of the U-shaped sheet metal part 4. Therefore, during the process of disassembling and assembling the bolt 5, the bolt 5 is easy to fall off when it is in the groove cavity of the U-shaped sheet metal part 4, resulting in inconvenience in disassembling and assembling the bolt 5, which makes the operation of disassembling and assembling the protective cover plate 3 more cumbersome and inconvenient. In order to prevent the bolt 5 from falling off, a common method is to increase the length of the rod of the bolt 5, but this will cause the rod of the bolt 5 to extend excessively into the interior of the machine tool, which is easy to interfere with other parts in the machine tool. Utility Model Content

[0006] The utility model aims to solve the above problems in the prior art and proposes a machine tool protective cover plate connection structure, which solves the technical problem of how to facilitate the disassembly and assembly of the protective cover plate and reduce the cost.

[0007] The purpose of the utility model can be achieved through the following technical solutions:

[0008] A machine tool protective cover connection structure, comprising a bolt, a U-shaped groove body arranged on the machine tool shell and a U-shaped sheet metal fixed on the protective cover plate, the U-shaped sheet metal part is embedded in the U-shaped groove body, a connecting nut is fixed on the U-shaped groove body, and a mounting hole corresponding to the connecting nut is provided on the protective cover plate, characterized in that a support plate is fixed in the groove cavity of the U-shaped sheet metal part, the end of the support plate is bent to form a supporting foot, the supporting foot is fixed to the bottom wall of the U-shaped sheet metal part, a through hole corresponding to the mounting hole is provided on the support plate, the rod of the bolt is penetrated through the through hole and the connecting nut and is threadedly connected with the connecting nut, and the head of the bolt rests on the support plate and is inserted in the mounting hole.

[0009] During installation, the protective cover is covered on the machine tool housing, the U-shaped sheet metal is embedded in the U-shaped groove to form a preliminary positioning, and then the bolt is inserted into the mounting hole, the rod of the bolt is inserted into the through hole and the connecting nut of the support plate, and then the bolt is tightened so that the head of the bolt is against the support plate, so that the protective cover is fixed on the machine tool housing, and the head of the bolt is inserted into the mounting hole. When disassembling, just remove the bolt with a screwdriver and then remove the protective cover. The connection structure of the protective cover of this machine tool can make the protective cover installed and fixed on the machine tool housing stably. At the same time, compared with the second connection structure, due to the setting of the support plate and the bolt never leaving the mounting hole during the disassembly process after being inserted into the mounting hole, the possibility of the bolt hanging in the groove cavity of the U-shaped sheet metal and falling is avoided, making the bolt easy to disassemble and assemble, thereby making the protective cover easy to disassemble and assemble. In addition, the support plate can be formed by sheet metal processing and bending, which can reduce the manufacturing cost compared with the first connection structure that requires lathe processing of stud processing parts. Therefore, the connection structure of the protective cover of the machine tool can ensure that the protective cover is stably installed on the machine tool housing, and can facilitate the disassembly and assembly of the protective cover on the machine tool housing while reducing costs.

[0010] In the above-mentioned machine tool protective cover plate connection structure, the two side edges of the support plate are respectively abutted against and fixed to the two side walls of the U-shaped sheet metal part.

[0011] The support plate and the U-shaped sheet metal are generally fixed by welding or bonding, which is convenient. The support plate and the two side walls of the U-shaped sheet metal are abutted and fixed, which increases the fixed position of the support plate and the U-shaped sheet metal, so that the support plate is fixed stably, and the support plate is prevented from falling off during the disassembly and assembly of the protective cover plate, thereby affecting the installation of the protective cover plate.

[0012] In the above-mentioned machine tool protective cover plate connection structure, both ends of the support plate are bent to form the support feet. The support feet are arranged at both ends of the support plate, which can increase the fixing position of the support plate and the U-shaped sheet metal part, making the support plate fixed and stable.

[0013] In the above-mentioned machine tool protective cover plate connection structure, an opening corresponding to the support plate is provided on the bottom wall of the U-shaped sheet metal part. The provision of the opening can reduce the weight of the protective cover plate, facilitate the handling of the protective cover plate during the disassembly and assembly process, and facilitate the disassembly and assembly of the protective cover plate.

[0014] In the above-mentioned machine tool protective cover plate connection structure, there is an annular gap between the outer side surface of the bolt head and the hole wall surface of the mounting hole. The setting of the annular gap can avoid interference between the bolt head and the hole wall surface of the mounting hole, thereby facilitating the screwing in and out of the bolt, which is conducive to facilitating the disassembly and assembly of the protective cover plate.

[0015] In the above-mentioned machine tool protective cover plate connection structure, the outer end surface of the bolt head is located in the mounting hole or is flush with the outer side surface of the protective cover plate. That is, the bolt head does not protrude from the outer side surface of the protective cover plate, which makes the machine tool look beautiful, and can also avoid accidentally touching the protruding bolt head to cause the bolt to loosen, ensuring that the protective cover plate is fixed and stable on the machine tool shell.

[0016] In the above-mentioned machine tool protective cover connection structure, there are two U-shaped sheet metal parts and they are respectively fixed on the left and right sides of the protective cover plate. The upper end of the protective cover plate is bent to form an upper flange, and the lower end of the protective cover plate is bent to form a lower flange. The upper and lower ends of the U-shaped sheet metal parts are respectively fixed to the upper flange and the lower flange.

[0017] The U-shaped sheet metal is welded and fixed to the protective cover. The two U-shaped sheet metals, the upper flange and the lower flange form a complete annular reinforcement rib at the edge of the protective cover to stabilize the structure of the protective cover. The two U-shaped sheet metals are fixed to the left and right sides of the protective cover respectively. The upper and lower ends of the protective cover are not provided with U-shaped sheet metals, which can reduce the fixing position of the protective cover and the machine tool housing, thereby reducing the number of bolt installations and making it easy to disassemble and assemble the protective cover.

[0018] In the above-mentioned machine tool protective cover plate connection structure, three support plates are sequentially arranged on each U-shaped sheet metal member along the up and down direction, and each support plate is provided with a through hole. This arrangement allows the protective cover plate to be fixed with an appropriate number of bolts, so that the protective cover plate is installed and fixed on the machine tool housing stably, while reducing the number of bolts, thereby making it easy to disassemble and assemble the protective cover plate.

[0019] Compared with the prior art, the utility model has the following advantages:

[0020] A support plate is fixed on the U-shaped sheet metal, and the end of the support plate is bent to form a support foot, which is fixed to the bottom wall of the U-shaped sheet metal. A through hole corresponding to the mounting hole of the protective cover is provided on the support plate, the rod of the bolt is passed through the through hole and is threadedly connected to the connecting nut, and the head of the bolt is against the support plate and inserted into the mounting hole, so that the protective cover is fixed and stably on the machine tool casing, and the protective cover is easy to disassemble and assemble and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the cross section of the first connection structure of the protective cover plate in the prior art.

[0022] Figure 2 It is a structural schematic diagram of the cross section of the second connection structure of the protective cover plate in the prior art.

[0023] Figure 3 This is a front view of the protective cover of this machine tool when it is installed on the machine tool casing.

[0024] Figure 4 yes Figure 3 Cross-sectional view along the AA direction.

[0025] Figure 5 yes Figure 3 Cross-sectional view along the BB direction.

[0026] Figure 6 yes Figure 3 Cross-sectional view along CC direction.

[0027] Figure 7 It is a three-dimensional view of the protective cover in the protective cover connection structure of this machine tool when viewed from the back.

[0028] Figure 8 yes Figure 7 A partial enlarged view of point D in the middle.

[0029] In the figure, 1, outer shell; 1a, U-shaped trough; 2, connecting nut; 3, protective cover; 3a, mounting hole; 3b, large hole; 3c, upper flange; 3d, lower flange; 4, U-shaped sheet metal; 4a, opening; 4b, small hole; 5, bolt; 6, support plate; 6a, through hole; 6b, support foot; 8, annular gap; 9, stud processing part. DETAILED DESCRIPTION

[0030] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0031] like Figure 3 and Figure 4 As shown, a machine tool protective cover plate connection structure includes bolts 5, a U-shaped groove body 1a arranged on the machine tool housing 1, and a U-shaped sheet metal part 4 fixed on the edge of the protective cover plate 3. The U-shaped groove body 1a is stamped and formed by the edge of the window of the housing 1, and the U-shaped sheet metal part 4 is stamped and formed by a plate. Figure 7 and Figure 8 As shown, the back side of the protective cover plate 3 is the inner side of the protective cover plate 3. There are two U-shaped sheet metal parts 4, which are fixed on the left and right sides of the inner side of the protective cover plate 3, respectively, and the length of the U-shaped sheet metal part 4 is set in the up and down direction. The upper end of the protective cover plate 3 is bent to form an upper flange 3c, and the lower end of the protective cover plate 3 is bent to form a lower flange 3d. The upper end and the lower end of the U-shaped sheet metal part 4 are fixed to the upper flange 3c and the lower flange 3d, respectively. The two side walls of the U-shaped sheet metal part 4 are abutted against the inner side of the protective cover plate 3 and fixed, and the bottom wall of the U-shaped sheet metal part 4 is parallel to the protective cover plate 3 and has a gap with the protective cover plate 3. The U-shaped sheet metal part 4 is fixed to the protective cover plate 3 by welding.

[0032] like Figure 4 , Figure 5 and Figure 6As shown, the structure of the U-shaped trough body 1a corresponds to the U-shaped sheet metal 4. There are two U-shaped trough bodies 1a, which are respectively located on the left and right sides of the window of the shell 1. The length of the U-shaped trough body 1a is set in the up and down direction, and the notch of the U-shaped trough body 1a is set outward. The U-shaped sheet metal 4 is embedded in the corresponding U-shaped trough body 1a, and the bottom wall of the U-shaped sheet metal 4 is in contact with the bottom wall of the U-shaped trough body 1a. There is a gap between the two side walls of the U-shaped sheet metal 4 and the two side walls of the U-shaped trough body 1a. A connecting nut 2 is fixed on the bottom wall of the U-shaped trough body 1a, and a mounting hole 3a corresponding to the connecting nut 2 is opened on the protective cover plate 3. The connecting nut 2 is welded and fixed to the U-shaped trough body 1a. A support plate 6 is fixed in the groove cavity of the U-shaped sheet metal 4, and the end of the support plate 6 is bent to form a support foot 6b, and the support foot 6b is fixed to the bottom wall of the U-shaped sheet metal 4. The support plate 6 is provided with a through hole 6a corresponding to the mounting hole 3a, and the aperture of the through hole 6a is smaller than the aperture of the mounting hole 3a. The rod of the bolt 5 is inserted into the through hole 6a and the connecting nut 2 and forms a threaded connection with the connecting nut 2. The head of the bolt 5 abuts against the support plate 6 and is inserted into the mounting hole 3a. The bolt 5 is a hexagon socket bolt, and the outer diameter of the head of the bolt 5 is slightly smaller than the aperture of the mounting hole 3a, and the difference between the two is 1mm-5mm. There is an annular gap 8 between the outer side surface of the head of the bolt 5 and the hole wall surface of the mounting hole 3a. The outer end surface of the head of the bolt 5 is located in the mounting hole 3a or flush with the outer side surface of the protective cover 3. Combined with Figure 7 and Figure 8 As shown, three support plates 6 are sequentially arranged on each U-shaped sheet metal part 4 along the up and down direction, and each support plate 6 is provided with a through hole 6a. An opening 4a corresponding to the support plate 6 is arranged on the bottom wall of the U-shaped sheet metal part 4. The support foot 6b of the support plate 6 is inserted into the opening 4a and fixed to the bottom wall of the U-shaped sheet metal part 4. In the middle of the U-shaped sheet metal part 4, both ends of the support plate 6 are bent to form the support foot 6b. At the upper end of the U-shaped sheet metal part 4, the lower end of the support plate 6 is bent to form the support foot 6b, the upper end of the support plate 6 is abutted against and fixed to the upper flange 3c, and the support plate 6 is fixed to the upper flange 3c by welding or bonding. At the lower end of the U-shaped sheet metal part 4, the upper end of the support plate 6 is bent to form the support foot 6b, the lower end of the support plate 6 is abutted against and fixed to the lower flange 3d, and the support plate 6 is fixed to the lower flange 3d by welding or bonding. The two side edges of the support plate 6 are respectively abutted against and fixed to the two side walls of the U-shaped sheet metal part 4. The support plate 6 and the U-shaped sheet metal part 4 are fixed by welding or bonding.

[0033] During installation, the protective cover plate 3 is covered on the window of the machine tool housing 1, and the U-shaped sheet metal part 4 is embedded in the U-shaped groove body 1a to form left and right positioning, and then the bolt 5 is inserted into the mounting hole 3a, and the rod of the bolt 5 is inserted into the through hole 6a of the support plate 6 and the connecting nut 2, and then the bolt 5 is tightened so that the head of the bolt 5 is against the support plate 6, so that the protective cover plate 3 is fixed on the machine tool housing 1, and the head of the bolt 5 is inserted in the mounting hole 3a. When disassembling, just remove the bolt 5 with a screwdriver, and then remove the protective cover plate 3. The connection structure of the protective cover plate 3 of this machine tool can make the protective cover plate 3 stably installed on the machine tool housing 1. At the same time, compared with the second connection structure, it can prevent the bolt 5 from falling off the U-shaped sheet metal part 4, making the protective cover plate 3 easy to disassemble and assemble. Moreover, the support plate 6 can be formed by bending the plate through sheet metal processing, which can reduce the manufacturing cost compared with the first connection structure that requires lathe processing of the stud processing part 9. Therefore, the connection structure of the machine tool protective cover 3 can ensure that the protective cover 3 is stably installed on the machine tool housing 1, and can facilitate the disassembly and assembly of the protective cover 3 on the machine tool housing 1 while reducing costs.

[0034] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A machine tool protective cover plate connection structure, comprising a bolt (5), a U-shaped groove (1a) arranged on a machine tool housing (1), and a U-shaped sheet metal part (4) fixed on a protective cover plate (3), wherein the U-shaped sheet metal part (4) is embedded in the U-shaped groove (1a), a connecting nut (2) is fixed on the U-shaped groove (1a), and a mounting hole (3a) corresponding to the connecting nut (2) is opened on the protective cover plate (3), characterized in that: A support plate (6) is fixed in the groove cavity of the U-shaped sheet metal part (4), the end of the support plate (6) is bent to form a support foot (6b), and the support foot (6b) is fixed to the bottom wall of the U-shaped sheet metal part (4). A through hole (6a) corresponding to the mounting hole (3a) is opened on the support plate (6), and the rod of the bolt (5) is inserted into the through hole (6a) and the connecting nut (2) and forms a threaded connection with the connecting nut (2), and the head of the bolt (5) is against the support plate (6) and inserted into the mounting hole (3a).

2. The machine tool protective cover plate connection structure according to claim 1, characterized in that: The two side edges of the support plate (6) are respectively abutted against and fixed to the two side walls of the U-shaped sheet metal component (4).

3. The machine tool protective cover plate connection structure according to claim 1, characterized in that: Both ends of the support plate (6) are bent to form the support feet (6b).

4. The machine tool protective cover plate connection structure according to claim 1, characterized in that: An opening (4a) corresponding to the support plate (6) is provided on the bottom wall of the U-shaped sheet metal part (4).

5. The machine tool protective cover plate connection structure according to any one of claims 1 to 4, characterized in that: An annular gap (8) is provided between the outer side surface of the head of the bolt (5) and the wall surface of the mounting hole (3a).

6. The machine tool protective cover plate connection structure according to any one of claims 1 to 4, characterized in that: The outer end surface of the head of the bolt (5) is located in the mounting hole (3a) or is flush with the outer side surface of the protective cover plate (3).

7. The machine tool protective cover plate connection structure according to any one of claims 1 to 4, characterized in that: There are two U-shaped sheet metal parts (4) which are respectively fixed to the left and right sides of the protective cover plate (3); the upper end of the protective cover plate (3) is bent to form an upper flange (3c); the lower end of the protective cover plate (3) is bent to form a lower flange (3d); the upper end and the lower end of the U-shaped sheet metal part (4) are respectively fixed to the upper flange (3c) and the lower flange (3d).

8. The machine tool protective cover plate connection structure according to claim 7, characterized in that: Three support plates (6) are arranged in sequence on each U-shaped sheet metal part (4) along the up-down direction, and each support plate (6) is provided with a through hole (6a).

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