Tool for clamping cylindrical workpiece

Abstract

The utility model discloses a tool for clamping a cylindrical workpiece, and belongs to the technical field of spraying processing devices, and the tool comprises a main body used for being fixed with a chuck jaw, and the middle area of the main body is used for supporting the cylindrical workpiece; the movable clamps are annularly distributed and connected to the main body, each movable clamp comprises a fixed block, a sliding block used for clamping a cylindrical workpiece and an adjusting piece, the fixed blocks are fixedly connected with the main body, the sliding blocks are connected with the fixed blocks through the adjusting pieces, grooves are formed in the side faces of the fixed blocks, and the grooves face the middle area of the main body; the sliding block is arranged in the groove, the embedding depth of the sliding block can be adjusted, and the direction that the sliding block is embedded into or separated from the groove is consistent with the direction that the sliding block is far away from or close to the middle area of the main body. The clamping range of the tool can be conveniently adjusted, the cylindrical workpiece can be tightly clamped on the tool and stably fixed on the outer side of the cylindrical workpiece, the situation that molten powder is clamped into the sliding grooves, and consequently chuck jaws are difficult to slide is avoided, a fixing foundation is provided for the cylindrical workpiece, and spraying machining is facilitated.

Description

Technical Field

[0001] The present application belongs to the technical field of spray processing equipment, and in particular relates to a tool for clamping a cylindrical workpiece. Background Art

[0002] In order to carry out the spraying work, modern spraying operations are completed by robots. The workpiece to be sprayed can be installed on a turntable. The turntable is made of a round aluminum plate with slots or holes on the aluminum plate surface to fix the tooling. A turntable chuck is usually used as a clamping tool for conventional samples or tooling. The turntable chuck has a cylindrical appearance and can be fixedly installed on the aluminum plate surface of the turntable. The center line of the turntable chuck coincides with the center line of the turntable. The turntable chuck is slotted and embedded with chuck claws. The chuck claws can slide in the grooves on the turntable surface. The chuck claws can be fixed to the turntable and clamp the workpiece by fixing the sliding block to achieve the purpose of clamping. Due to the range of the diameter of the turntable chuck, the types of workpieces that can be directly clamped by the turntable chuck (referred to as the chuck) are limited. For particularly small and large workpieces, it is necessary to design tooling in a targeted manner, and fix the tooling on the chuck to clamp the workpiece on it.

[0003] Thermal spraying refers to heating and melting the coating material, atomizing it into extremely fine particles with high-speed airflow, and spraying it onto the surface of the workpiece at a very high speed to form a coating. According to the needs, different coating materials can be selected to obtain one or more properties such as wear resistance, corrosion resistance, oxidation resistance, and heat resistance. For thermal spraying of cylindrical workpieces, such as thermal spraying of the inner wall of the flame tube, the flame combustion temperature in the flame tube is greater than 1000 degrees Celsius. In order to cope with the influence of high temperature, the flame tube usually uses high-temperature resistant materials and sprays thermal barrier coatings on the inner wall of the tube to cope with the high temperature and combustion products generated by combustion and the negative effects of high-speed airflow erosion and wear.

[0004] The existing thermal spraying processing of larger-sized cylindrical workpieces, such as flame tubes with a diameter greater than 100 mm, requires the cylindrical workpiece to be fixed first and then sprayed using a spray robot. During thermal spraying, molten powder will be generated, which is easy to enter the existing turntable chuck slot and affect the sliding of the chuck claw in the slot. If the powder continues to accumulate, the chuck claw will be stuck on the turntable, and the chuck claw position cannot be adjusted, and the cylindrical workpiece cannot be fixed, and the device will eventually become unusable. On the other hand, due to the large size of the cylindrical workpiece, the chuck currently used in processing cannot fix the cylindrical workpiece. For cylindrical workpieces, a specially designed device is required to fix the cylindrical workpiece. Utility Model Content

[0005] The present application aims to solve, at least to a certain extent, the technical problem of fixing the cylindrical workpiece during spraying. To this end, the present application provides a tool for clamping the cylindrical workpiece, which can conveniently adjust the clamping range of the tool, and can tightly clamp the cylindrical workpiece on the tool, and stably fix it on the outside of the cylindrical workpiece, thereby avoiding the situation where molten powder is stuck in the slide groove and the chuck claw is difficult to slide, and provides a fixing basis for the cylindrical workpiece to facilitate spraying processing.

[0006] The present application embodiment provides a tool for clamping a cylindrical workpiece, comprising:

[0007] A main body, used for fixing with the chuck jaws, and a middle area of ​​the main body is used for supporting a cylindrical workpiece;

[0008] A plurality of movable clips are connected to the main body and arranged around the middle area of ​​the main body. The movable clips include a fixed block, a sliding block and an adjusting piece. The fixed block is fixedly connected to the main body. The adjusting piece connects the sliding block to the fixed block. A groove is provided on the side of the fixed block, and the groove faces the middle area of ​​the main body. One end of the sliding block is placed in the groove, and the other end of the sliding block is used to clamp the outside of the cylindrical workpiece. The sliding block can adjust the insertion depth relative to the groove. The direction in which the sliding block is inserted into or out of the groove is consistent with the direction away from or close to the middle area of ​​the main body. After adjusting the depth, the sliding block can be fixed to the fixed block through the adjusting piece.

[0009] In an optional embodiment, the fixing block is U-shaped, the groove is formed by the U-shaped recessed area of ​​the fixing block, and the end of the sliding block for clamping the cylindrical workpiece is provided with a notch.

[0010] In an optional embodiment, a positioning member is further included, which is connected to the main body and is used to be fixed to the chuck claw.

[0011] In an optional embodiment, the main body includes a clamping base, a chassis and a support column, the two ends of the support column are respectively connected to the clamping base and the chassis, one side of the clamping base opposite to the support column is fixed to the fixed block, and one side of the chassis opposite to the support column is fixed to the positioning piece.

[0012] In an optional embodiment, the positioning member includes a positioning column and a positioning block, the positioning column is connected to the middle of one side of the main body opposite to the movable clamp, the positioning column is used to be fixed in the center of the chuck, and the positioning block is used to be clamped with the chuck claw.

[0013] In an optional embodiment, the thickness of the chassis is: [8mm, 15mm], and the thickness of the clamping base is: [15mm, 24mm].

[0014] In an optional embodiment, the clamping base includes a first ring member and a second ring member, respectively, which are annular. The inner diameter of the first ring member is larger than the inner diameter of the second ring member, so that the first ring member and the second ring member form an annular step structure at the inner edge, and the annular step structure is used to support the bottom of the cylindrical workpiece.

[0015] In an optional embodiment, the clamping base also includes a column tube, one end of which is connected to the inner edge of the clamping base, and the other end of which is connected to the chassis. The side wall of the column tube is provided with an observation window that runs through the inside and outside, and the observation window and the support column are staggered.

[0016] In an optional embodiment, a fastener is further included, and the fastener fixes the clamping base, the chassis and the support column.

[0017] In an optional embodiment, the movable clip further includes a locking member, which fixes the fixing block to the main body.

[0018] It can be seen from the above technical solution that the beneficial effects of this application are:

[0019] The tooling of the present application adopts a main body as an intermediate connecting structure, and the main body can be fixed with the chuck claws of the turntable to provide a support basis for the cylindrical workpiece. The cylindrical workpiece can be seated in the middle area, and the cylindrical workpiece can be fixed at the periphery of the cylindrical workpiece through multiple movable clips to form a stable clamping, so that the groove is no longer located at the bottom or below the cylindrical workpiece, and powder will not enter the groove. The fixed block and the sliding block can clamp and fix the cylindrical workpiece at the periphery of the middle area, and the groove is opened on the side of the fixed block, and the sliding block moves in the direction of being placed in or out of the groove to adjust the position, and the sliding block can always be tightly clamped in the barrel The outer periphery of the workpiece is also prevented from the powder produced by thermal spraying falling naturally into the groove under the action of gravity, which is inconvenient to clean. The depth of the sliding block into the groove can be adjusted by the adjusting piece, which is convenient for adjustment, so that cylindrical workpieces of different sizes can be clamped and fixed, and the sliding block can be tightly clamped on the cylindrical workpiece by the adjusting piece; in this way, the present application can conveniently adjust the clamping range of the tooling, can tightly clamp the cylindrical workpiece on the tooling, and stably fix it on the outside of the cylindrical workpiece, avoiding the situation where the molten powder is stuck in the slide groove and the chuck claw is difficult to slide, and provides a fixed basis for the cylindrical workpiece to facilitate spraying processing. On the other hand, thermal spraying will produce higher temperatures, such as the plasma flame temperature of up to 3000°C. If the turntable and the chuck claw are directly subjected to high temperatures, it will affect the use and life. The use of the main body and the movable clamp as the intermediate connection structure can avoid the impact on the turntable and the chuck claw. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other embodiments and drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A schematic diagram of an embodiment of the tooling for clamping a cylindrical workpiece according to the utility model is shown;

[0022] Figure 2 A bottom schematic diagram of an embodiment of a tooling for clamping a cylindrical workpiece according to the utility model is shown;

[0023] : Reference numerals: 100, tooling; 110, movable clip; 111, fixed block; 112, sliding block; 113, locking member; 114, adjusting member; 120, main body; 121, clamping base; 121a, first ring member; 121b, second ring member; 122, chassis; 123, support column; 124, column tube; 124a, observation window; 130, positioning member; 131, positioning column; 132, positioning block; 140, fastener. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0028] The present application is described below with reference to the accompanying drawings and specific embodiments:

[0029] Please refer to Figure 1 The embodiment of the present application provides a tool for clamping a cylindrical workpiece, including a main body 120 and a plurality of movable clamps 110. The main body 120 serves as a base for installation, and the plurality of movable clamps 110 are used to fix the cylindrical workpiece; the main body 120 is used to be fixed with the chuck claws, and the middle area of ​​the main body 120 is used to support the cylindrical workpiece. The main body 120 can be a variety of structures, such as the main body 120 is block-shaped, the bottom of the main body 120 is provided with a groove or protrusion matching the chuck claws, which is convenient for the main body 120 to be fixed with the chuck claws, and the top middle area of ​​the main body 120 is circular or annular, which is convenient for the bottom edge of the cylindrical workpiece to be seated on the top of the main body 120; the plurality of movable clamps 110 are connected to the main body 120 and are arranged around the middle area of ​​the main body 120, so that the plurality of movable clamps 110 surround the middle area of ​​the main body 120 at intervals to form a radial shape; specifically, the movable clamp 110 includes a fixing block 111, The sliding block 112 and the adjusting member 114, the fixed block 111 and the main body 120 are fixedly connected, and welding, screw connection or other connection methods can be adopted. No matter which connection method is adopted, it should be ensured that the connecting parts are tight and the interface is flat; a groove is provided on the side of the fixed block 111, and the groove faces the middle area of ​​the main body 120. The fixed block 111 and the sliding block 112 are provided with connecting holes at relative positions, and the connecting holes are connected to the inside of the groove. The adjusting member 114 is a screw, and the connecting hole is a threaded hole. Other parts can also be used. The arrangement direction of the adjusting member 114 is consistent with the direction of inserting and disengaging from the groove in the horizontal direction. The adjusting member 114 connects the sliding block 112 to the fixed block 111 through the corresponding connecting hole. One end of the sliding block 112 is placed in the groove and can be adjusted in position through the adjusting member 114. The other end of the sliding block 112 faces the middle area of ​​the main body 120, and this end is used to clamp the outside of the cylindrical workpiece.

[0030] The depth of the sliding block 112 relative to the groove can be adjusted. The direction in which the sliding block 112 is inserted into or out of the groove is consistent with the direction away from or close to the middle area of ​​the main body 120. After adjusting the depth, the adjusting member 114 stops rotating, and a part of the adjusting member 114 is connected to the fixed block 111, and another part of the adjusting member 114 is connected to the sliding block 112. In this way, the sliding block 112 is fixed to the fixed block 111 through the adjusting member 114, and the degree of compression between the sliding block 112 and the cylindrical workpiece can be adjusted by the tightening degree of the adjusting member 114; when the three adjusting members 114 are tightened, the sliding block 112 clamps and fixes the cylindrical workpiece from three directions. The adjusting member 114 is convenient for freely adjusting the tightness, and can also be used for cylindrical workpieces of different sizes within a certain range; the tooling 100 formed above has a simple structure, is also convenient for the installation and clamping of cylindrical workpieces, is easy to match with the turntable and the chuck jaws, and has low cost. In an optional embodiment, the movable clip 110 also includes a locking piece 113, the fixed block 111 is provided with through holes passing through both ends of the top and the bottom, and the main body 120 is provided with threaded holes at corresponding positions. The locking piece 113 adopts a screw, and the locking piece 113 passes through the through hole and the corresponding threaded hole to fix the fixed block 111 to the main body 120, so that the fixed block 111 can be stably fixed on the top of the main body 120, providing a basis for clamping.

[0031] Existing turntables and chuck jaws cannot be used to fix larger cylindrical workpieces. First, when the cylindrical workpiece is thermally sprayed, the molten powder produced by thermal spraying easily enters the slide groove of the turntable, making it difficult to adjust the chuck jaws, resulting in the device being unable to fix and clamp the cylindrical workpiece. The present application uses a main body 120 as an intermediate connection structure. The main body 120 can be fixed to the chuck jaws of the turntable to provide a support base for the cylindrical workpiece. The cylindrical workpiece can be seated in the middle area, and the cylindrical workpiece can be fixed on the periphery of the cylindrical workpiece through multiple movable clips 110 to form a stable clamp. In this way, the groove is no longer located at the bottom or below the cylindrical workpiece, and the powder will not enter the groove. The fixed block 111 and the sliding block 112 can clamp and fix the cylindrical workpiece on the periphery of the middle area. A groove is opened on the side of the fixed block 111, and the sliding block 112 moves in the direction of being inserted into or out of the groove to adjust the position. The sliding block 112 can always clamp tightly On the periphery of the cylindrical workpiece, it is also prevented that the powder produced by thermal spraying naturally falls into the groove under the action of gravity and is inconvenient to clean. The depth of the sliding block 112 inserted into the groove can be adjusted by the adjusting member 114, which is convenient for adjustment, so that cylindrical workpieces of different sizes can be clamped and fixed, and the sliding block 112 can be tightly clamped by the adjusting member 114. In this way, the present application can conveniently adjust the clamping range of the tool 100, can tightly clamp the cylindrical workpiece on the tool 100, and stably fix it on the outside of the cylindrical workpiece, avoiding the situation where the molten powder is stuck in the slide groove and the chuck claw is difficult to slide, and provides a fixed foundation for the cylindrical workpiece to facilitate spraying processing. On the other hand, thermal spraying will produce higher temperatures, such as the plasma flame temperature can reach 3000°C. If the turntable and the chuck claw are directly subjected to high temperatures, it will affect the use and life. The use of the main body 120 and the movable clamp 110 as the intermediate connection structure can avoid the impact on the turntable and the chuck claw.

[0032] In an optional embodiment, the fixed block 111 is U-shaped, and the groove is formed by the U-shaped recessed area of ​​the fixed block 111. The size of the fixed block 111 is 40mm×80mm×80mm, and the groove is provided to form the inner wall of the groove. The end of the sliding block 112 for clamping the cylindrical workpiece is provided with a notch, and the notch of the sliding block 112 can face the outer wall of the cylindrical workpiece, and the two sides of the notch of the sliding block 112 can abut against the outer wall of the cylindrical workpiece. The notch of the sliding block 112 can also be set to an arc shape, and the size of the sliding block 112 is 25mm×40mm×80mm, and the sliding block 112 is just stuck in the notch of the fixed block 111. The sliding block 112 is provided with a plurality of holes in the inner wall of the groove opposite to the end of the sliding block 112, and the sliding block 112 is also provided with a plurality of corresponding holes. The sliding block 112 is connected to the fixed block 111 by passing the adjusting member 114 through the corresponding holes. The above-mentioned holes are threaded holes, which facilitate the adjusting member 114 to tighten or loosen the sliding block 112. When the adjusting member 114 is loosened, the sliding block 112 is placed in the groove of the fixed block 111. When the adjusting member 114 is tightened, the sliding block 112 is disengaged from the groove of the fixed block 111. When the cylindrical workpiece is placed on the main body 120, the sliding block 112 clamps the cylindrical workpiece to play a fixing role.

[0033] Please refer to Figure 2 In an optional embodiment, a positioning member 130 is further included, which is connected to the main body 120. The positioning member 130 is used to be fixed to the chuck claw. The positioning member 130 adopts a structure protruding from the bottom of the main body 120. A line in the diameter direction is drawn through the center of the bottom circle of the main body 120. A chord perpendicular to the diameter is drawn at a position 100 mm away from the center of the circle. The intersection of the diameter and the chord is marked as O. With point O as the center, two straight lines perpendicular to the chord are drawn at a position 50 mm away from both sides of the diameter. The intersection of the chord is marked as A and B. Point A and point B are used as the installation position of the positioning member 130. After the position of the positioning block 132 is determined, the positioning block 132 is connected.

[0034] In an optional embodiment, the main body 120 includes a clamping base 121, a chassis 122 and a support column 123, and the two ends of the support column 123 are respectively connected to the clamping base 121 and the chassis 122. The support column 123 can adopt a solid or hollow cylindrical structure. The side of the clamping base 121 opposite to the support column 123 is fixed to the fixed block 111, and the side of the chassis 122 opposite to the support column 123 is fixed to the positioning member 130. The clamping base 121, the chassis 122 and the support column 123 are polished and chamfered before connection, such as an edge chamfer of 0.4mm*45°, to ensure a smooth surface and prevent hand injuries during use. The support column 123 is provided in plurality, and the plurality of support columns 123 are spaced around the outside of the middle area of ​​the main body 120, such as Figure 1The three support columns 123 are evenly distributed along the circumference at 120°, and the clamping base 121, the chassis 122 and the support columns 123 can be connected by welding, screw connection or other connection methods; in an optional embodiment, the clamping base 121 adopts an annular structure, and the inner diameter of the clamping base 121 is smaller than the inner diameter of the cylindrical workpiece, so that the cylindrical workpiece can be seated on the clamping base 121. In an optional embodiment, each component of the main body 120 and the movable clip 110 are made of steel, and the clamping base 121, the chassis 122 and the support column 123 all have a certain thickness or size, so that the tooling 100 has a certain thermal shock resistance and pressure resistance; in an optional embodiment, it also includes a fastener 140, the fastener 140 is a screw or a bolt, and threaded holes are respectively opened at corresponding positions of the clamping base 121 and the chassis 122, and the support column 123 is also opened with threaded holes running through the top and bottom ends. The fastener 140 passes through the corresponding threaded holes to fix the clamping base 121, the chassis 122 and the support column 123, and the distance between the clamping base 121 and the chassis 122 is the height of the support column 123.

[0035] In an optional embodiment, the thickness of the chassis 122 is: [8mm, 15mm], such as 8mm, 10mm or 15mm, the outer diameter of the chassis 122 is [300mm, 400mm], such as 300mm, 350mm or 400mm, the thickness of the clamping base 121 is: [15mm, 24mm], such as 15mm, 20mm or 24mm, the inner diameter of the chassis 122 and the clamping base 121 is [150mm, 180mm], such as 150mm, 170mm or 180mm, the length of the support column 123 is [50mm, 110mm], such as 50mm, 80mm or 110mm, and the outer diameter of the support column 123 is [30mm, 80mm], such as 30mm, 60mm or 80mm, so that the tooling 100 can withstand the impact of high temperature flames and withstand a large weight load. The cylindrical workpiece is relatively large in size, such as a flame tube. Since the flame tube has a certain wall thickness, it has a large weight, and the main body 120 needs to be able to bear the weight of the entire cylindrical workpiece. Therefore, the clamping base 121 and the chassis 122 need to have a certain thickness, and the support column 123 also needs to have a certain size to provide strong support. In this way, the entire tooling 100 can withstand the pressure brought by the weight of the cylindrical workpiece and prevent operations such as pressing and grinding rotation from causing damage to the tooling 100 or the cylindrical workpiece.

[0036] In an optional embodiment, the positioning member 130 includes a positioning column 131 and a positioning block 132. The positioning column and the positioning block 132 are both polished for easy positioning. The positioning column 131 is a cylinder with an outer diameter of 60 mm and a height of 60 mm. The positioning column 131 is used to be fixed in the center of the chuck. The positioning block 132 is used to clamp with the chuck claw. There are two positioning blocks 132, which are rectangular blocks. The size of the positioning block 132 is 40 mm × 20 mm × 20 mm, and the edge chamfer is 0.4 mm. *45°, the spacing between the two positioning blocks 132 is equal to the width of the chuck claws of the turntable, so that the two positioning blocks 132 can just grab and fix the chuck, and the positioning column 131 is connected to the middle of the side of the main body 120 opposite to the movable clamp 110, specifically connected to the center of the bottom of the main body 120, such as the bottom center position of the chassis 122, so that it is easy for the positioning column 131 to be clamped into the center of the chuck; when the positioning column 131 and the positioning member 130 are clamped and fixed at the same time, the position of the tooling 100 is determined.

[0037] In an optional embodiment, the clamping base 121 includes a first ring member 121a and a second ring member 121b, respectively, which are annular. The first ring member 121a and the second ring member 121b are coaxially arranged, and the inner diameter of the first ring member 121a is larger than the inner diameter of the second ring member 121b, so that the first ring member 121a and the second ring member 121b form an annular step structure at the inner edge, and the annular step structure is used to support the bottom of the cylindrical workpiece; Figure 1 As shown in the figure, the first ring member 121a is placed on the top of the second ring member 121b, the inner diameter of the first ring member 121a is larger than the outer diameter of the cylindrical workpiece, and the inner diameter of the second ring member 121b is smaller than the inner diameter of the cylindrical workpiece, so that the bottom end of the cylindrical workpiece can be seated on the annular step structure, and the outer diameters of the first ring member 121a and the second ring member 121b are equal; in an optional embodiment, the thickness of the second ring member 121b is [5mm, 9mm], and the thickness of the first ring member 121a is [10mm, 15mm].

[0038] In an optional embodiment, the clamping base 121 also includes a cylinder 124, one end of the cylinder 124 is connected to the inner edge of the clamping base 121, the other end of the cylinder 124 is connected to the chassis 122, the top of the cylinder 124 is connected to the inner edge of the clamping base 121, the bottom of the cylinder 124 is connected to the middle of the chassis 122, the central axis of the cylinder 124 is the same as the axis of the clamping base 121 and the chassis 122, the cylinder 124 is a cylindrical structure, the height of the cylinder 124 is [100mm, 120mm], the outer diameter of the cylinder 124 is smaller than the inner diameter of the second ring member 121b and is equal to the inner diameter of the first ring member 121a, the outer diameter of the cylinder 124 is [170mm, 300mm], such as 170mm, 250mm or 300mm, and the wall thickness of the cylinder 124 is The thickness is greater than or equal to 5mm, such as 8mm, to ensure a certain structural strength; the side wall of the column 124 is provided with an observation window 124a that runs through the inside and outside, and the observation window 124a is an opening on the side of the column 124, and a plurality of spaced openings are provided, such as 3 openings, and the observation window 124a and the support column 123 are staggered. The size of the observation window 124a is as large as possible without affecting the structural strength of the column 124, so as to facilitate observation. After the observation window 124a is opened, the column 124 still has a stable support function; because the cylindrical workpiece is seated on the inner edge of the support base, such as on the second ring 121b, the inside of the cylindrical workpiece can be observed instantly through the observation window 124a, so as to instantly understand the spraying condition of the inner wall of the cylindrical workpiece, which is convenient for observing the position of the spray gun during the spraying operation.

[0039] The present application adds a tooling 100 as an indirect connection structure between the chuck jaws of the turntable and the cylindrical workpiece, and indirectly fixes the cylindrical workpiece by seating the cylindrical workpiece in the middle area of ​​the top of the main body 120 and fixing the main body 120 to the chuck jaws, and then adjusts the position of the sliding block 112 by tightening the adjusting piece 114 to clamp the cylindrical workpiece tightly on the top of the main body 120. In this way, it is fixed in the horizontal direction by the movable clamp 110 and supported in the vertical direction by the main body 120, which can be suitable for cylindrical workpieces of different diameters and heights and has better dimensional adaptability; through markings on the turntable, the cylindrical workpiece, the turntable and the tooling 100, the thermal spraying positioning of the inner wall of the cylindrical workpiece is facilitated, the uneven spraying thickness is avoided, and the spraying position is adjusted conveniently; at the same time, the use of the tooling 100 greatly reduces the installation position error, eliminates the problem of inaccurate local supplementary spraying positioning during the spraying process, resulting in supplementary spraying position deviation and excessive local coating thickness. Therefore, the present application is more suitable for the thermal spraying process of cylindrical workpieces.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", "optional example" or "optional implementation" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0041] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0042] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A tool for clamping a cylindrical workpiece, characterized in that: include: A main body (120) is used to be fixed with the chuck jaws, and a middle area of ​​the main body (120) is used to support a cylindrical workpiece; A plurality of movable clips (110) are connected to the main body (120) and are arranged around the middle area of ​​the main body (120), wherein the movable clips (110) include a fixed block (111), a sliding block (112) and an adjusting member (114), wherein the fixed block (111) is fixedly connected to the main body (120), and the adjusting member (114) connects the sliding block (112) to the fixed block (111), and a groove is provided on the side of the fixed block (111), and the groove faces the main body (120). ), one end of the sliding block (112) is placed in the groove, and the other end of the sliding block (112) is used to clamp the outside of the cylindrical workpiece. The sliding block (112) can be adjusted to a depth relative to the groove. The direction in which the sliding block (112) is placed in or out of the groove is consistent with the direction away from or close to the middle area of ​​the main body (120). After adjusting the depth, the sliding block (112) can be fixed to the fixed block (111) through the adjusting member (114).

2. The tool for clamping a cylindrical workpiece according to claim 1, characterized in that: The fixing block (111) is U-shaped, the groove is formed by the U-shaped recessed area of ​​the fixing block (111), and the end of the sliding block (112) for clamping the cylindrical workpiece is provided with a notch.

3. The tool for clamping a cylindrical workpiece according to claim 1, characterized in that: It also includes a positioning member (130) connected to the main body (120), and the positioning member (130) is used to be fixed with the chuck jaws.

4. The tool for clamping a cylindrical workpiece according to claim 3, characterized in that: The main body (120) comprises a clamping base (121), a chassis (122) and a support column (123); two ends of the support column (123) are respectively connected to the clamping base (121) and the chassis (122); a surface of the clamping base (121) opposite to the support column (123) is fixed to the fixing block (111); and a surface of the chassis (122) opposite to the support column (123) is fixed to the positioning member (130).

5. The tool for clamping a cylindrical workpiece according to claim 3, characterized in that: The positioning member (130) comprises a positioning column (131) and a positioning block (132); the positioning column (131) is connected to the middle of one side of the main body (120) opposite to the movable clamp (110); the positioning column (131) is used to be fixed at the center of the chuck; and the positioning block (132) is used to be clamped with the chuck claw.

6. The tool for clamping a cylindrical workpiece according to claim 4, characterized in that: The thickness of the chassis (122) is: [8mm, 15mm], and the thickness of the clamping base (121) is: [15mm, 24mm].

7. The tool for clamping a cylindrical workpiece according to claim 4, characterized in that: The clamping base (121) comprises a first ring member (121a) and a second ring member (121b) which are respectively annular, wherein the inner diameter of the first ring member (121a) is larger than the inner diameter of the second ring member (121b), so that the first ring member (121a) and the second ring member (121b) form an annular step structure at the inner edge, and the annular step structure is used to support the bottom of the cylindrical workpiece.

8. The tool for clamping a cylindrical workpiece according to claim 4, characterized in that: The clamping base (121) also includes a column tube (124), one end of the column tube (124) is connected to the inner edge of the clamping base (121), and the other end of the column tube (124) is connected to the chassis (122), and the side wall of the column tube (124) is provided with an observation window (124a) that runs through the inside and outside, and the observation window (124a) and the support column (123) are staggered.

9. The tool for clamping a cylindrical workpiece according to claim 4, characterized in that: It also includes a fastener (140), wherein the fastener (140) fixes the clamping base (121), the chassis (122) and the support column (123).

10. The tool for clamping a cylindrical workpiece according to any one of claims 1 to 9, characterized in that: The movable clip (110) further comprises a locking member (113), wherein the locking member (113) fixes the fixing block (111) to the main body (120).

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